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Microfiber leather, |
Posted by: Ouopio41 - 01-23-2022, 05:00 AM - Forum: My Forum
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As demand for better synthetics grew, manufacturers figured out ways to improve those synthetics. Today, they have created microfiber leather, the best synthetic yet. Other synthetics start by laying down strips of fabric and coating those with polyurethane resin. Microfiber leather starts with what is more accurately called a mat of synthetic fibers woven together and bound together with polyurethane.
Microfiber leather, or micro fiber leather, is the highest quality grade synthetic leather (faux leather or PU leather), a high-tech simulation of high-end leather material. Microfiber Leather is simulated the structure of natural leather, using sea-island superfine micro fiber (ultra-fine fiber bundle), and high-grade polyurethane resins as raw materials, using needle punched nonwoven technology of 3D structure, has a lot of similar characters as natural leather, however better physical & chemical performance, has been widely popular around the world. Because of superior performance, microfiber synthetic leather has been the best leather alternatives and the optimal leather substitute, material, best vegan leather and eco leather, can replace natural leather perfectly!
There are different kinds of Microfiber leather often used in the production such as PU Microfiber Leather, Suede Microfiber Leather, Microfiber Leather for Furniture Sofa, Microfiber Leather for Automotive, Microfiber Leather for Shoes, Microfiber Leather for Gloves, Microfiber Leather for Garments, Microfiber Leather for Packing, Microfiber Leather for Balls, etc.
Compared with real leather, microfibrer leather is high-class synthetic leather which perfectly replicates features of real leather such as the handfeeling, breathability and moisture absorption etc. The performance of microfiber including chemical and abrasion resistance, anti-crease, aging resistance etc are better than genuine leather. Because the real leather is animal skin, so it has a strange smell. If the formaldehyde and heavy metals exceed the standards in the production process, usually the real leather would has a pungent odour. However, the microfiber is anti-odour. Based on the quality distribution on natural hide, the amount of usable leather is about 60 to 80% only. However, the microfiber is not limited by this, it is produced in roll form, also the quality of microfiber is very stable.
And there are several ways to identify the quality of microfibre leather
1. Check the surface grains. The texture of high quality microfiber is more clear and the surface layer feels really like genuine leather. However, the poor quality microfiber leather texture is rough and with strong sense of plastics.
2. Handfeeling. High quality microfiber has a good feel and the elasticity, comfort are also very high.
3. Check the crease. Folding the different microfiber leathers, and then check and compare the the crease, also check if the crease can disappear soon or not when the recovery. The smaller crease, the faster disappearance, means the better performance of surface PU attached microfiber base. This is an important indicator for high quality microfiber.
4. Check the scratches. Scrape the surface of the microfiber with a hard object to see if it will leave scratches. The surface of the high quality microfiber is with outstanding scratch resistant.
5. Hydrolysis resistance. High quality microfiber is very resistant to hydrolysis. Of course, this is difficult to distinguish with the naked eye, but must ask clearly when the procurement.
6. Base fabric. Base fabric is a key component for microfibre leather and it is related to the overall performance of microfiber. A good base fabric means the performance of microfiber is more stable.
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rebar cutter |
Posted by: Ouopio41 - 01-23-2022, 04:57 AM - Forum: My Forum
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A rebar cutter is a special tool designed to cut through reinforcement bars or structural steel components that add strength and integrity to concrete and masonry structures. In addition to reinforcing concrete and masonry, steel bars and rods also work to shape structures, which is why tools for bending, angling, and cutting through thick steel are important, enabling precise manipulation of hard steel. Specialised tools make these processes easier and more efficient, while keeping workers safe from injuries. The use of inappropriate or merely adapted tools like cutting torches and other cutting tools can be hazardous and put users at risk of workplace accidents.
Rebar cutter manufacturers usually combine the functions of rebar cutters and rebar bender. This way, the machine can perform two tasks in one. Because projects typically require a good amount of bending and cutting of steel rods and bars, investing in rebar cutters and benders is something that every contractor should consider to make the tools accessible to workers. Mechanical tools like these help increase productivity and make tedious tasks easier to handle for workers. They also make the worksite a lot safer as they help protect workers' hands from potential injury because of manual handling of extremely hard and heavy metals.
Rebar bending machines are usually used for accuracy of bending angles. The machine is suitable for bending wide varieties of steel bars, TMT, and reinforcement bars etc used in construction. It is capable of bending the toughest rebars and its application is very extensive. The machine is suitable for contractors or construction companies to carry out different operations on rebar according to their requirements. It contains long steel shafts that can require bending before being used in construction. Different types of bender machines are applied for bending the rebar in the construction industry. All the types of bender differ in design and engineering, strength, technology and use. Apart from bending steel bars, the different machines also provide unique functions and capabilities based on the task that is needed to perform. It can be used for construction industry for scaffolding safety hooks, ceiling hook, concrete as well as in the railway industry including railway clips, etc.
Bar bending makes it possible for workers to target every other aspect of the job, and enable the device to achieve this tedious work. It has many advantages like it can manufacture with electrical and mechanical components that perform the bending task in a structured manner, increase the speed of your work and cuts down the time taken for bending, facilitate to doing multiple jobs in a day and gives you more time for other work and reduce the chances of accidents and further injuries due to its speedy cutting ability. The latest models have safety options that help to manage the heat and pressure during cuts. They are highly portable and easily moveable. It is helpful that it enables you to do multi-task jobs within a short period as it has high capacity cutting tools and can bend in wide varieties of arcs between 0 to 180 degrees for various construction purposes in the meantime speed up the operations while offering greater quality in bending.
It is not enough for processing the rebar with the help of rebar cutters and rebar bender, Stirrup Bender and Straightening and Cutting Machine also play an important role.
For constructions, excpet for the dealing with rebars, the processing of other materials like concrete are also important. Therefore many equipments such as Tamping Rammer, Road Roller, Plate Compactor, Screed Ruler, Concrete Pump and Mortar Spray Machine are commonly used and indispensia
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TM Horizontal Micro Switch. |
Posted by: Ouopio40 - 01-21-2022, 04:08 AM - Forum: My Forum
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Micro Switch can be used for many different applications and are suitable for a range of industries. A Micro Switch is a small, very sensitive switch which requires minimum compression to activate. They are very common in home appliances and switch panels with small buttons. They are typically inexpensive and have a long life meaning they can function for a long time - sometimes up to ten million cycles. Because they are reliable and sensitive, micro switches are often used as a safety device. They are used to prevent doors from closing if something or someone is in the way and other applications similar.
Micro Switches have an actuator which, when depressed, lifts a lever to move the contacts into the required position. Micro switches often make a "clicking" sound when pressed this informs the user of the actuation. Micro switches often contain fixing holes so that they can be easily mounted and secured into place. Because they are such a simple switch they require virtually no maintenance and they rarely need replacing due to their long life.
As stated above, the main advantage of using a micro switch is their inexpensiveness, along with their long life and low maintenance. Micro Switches are also versatile. Some micro switches offer a protection rating of IP67 which means they are resistant to dust and water. This enables them to work in conditions which they are exposed to dust and water and they will still function correctly. They can divided into many different types or funcions like AZ -7 Vertical Micro Switch and TM Horizontal Micro Switch.
Another usefel switch is rocker switch. A rocker switch is an on/off switch that rocks (rather than trips) when pressed, which means one side of the switch is raised while the other side is depressed much like a rocking horse rocks back and forth. A rocker switch may have a circle (for "on") on one end and a horizontal dash or line (for "off") on the other to let the user known if the device is on or off. Rocker switches are used in surge protectors, display monitors, computer power supplies, and many other devices and applications.
As with other types of switches, a number of features can be included in a rocker switch, such as indicators or a bigger switch surface to make it easier to find in the dark. Indicator lights allow users to see the state of the switch, with most cheap switches only having an "on" indicator light. Special rocker switches that are used as toggle switches for different modes or states aside from on or off usually have different indicator lights for each mode or state.
With various kinds of rocker switches like SPST Rocker Switch, DPST Rocker Switch, DPDT Rocker Switch, etc. they can apply in include all types of vehicles from cars, boats to military-grade aircraft, and they are also commonly found in homes and home appliances. Rocker switches are one of the most common switches used in the world, and as well as the Foot Switch like Standard Type Momentary Action Switch and Mini Foot Switch Front End Push.
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Switch Socket |
Posted by: Ouopio40 - 01-21-2022, 04:04 AM - Forum: My Forum
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Well, it can be difficult to figure out which types of switches and sockets you will need for your home and office. Every Switch Socket type serves a different purpose and knowing about these basic functionalities helps in making an informed purchase. So, today we are sharing an explainer for each type of switch and socket and its use.
Electrical Switches
First up, are the controlling devices, we call switches. Switches, as you know are used to flick and switch between power on and off states. Many Smart Switches are widely used in the daily life like for Electric Curtains, Light Switch, Floor Socket and Power Strip.
The socket is essential the conduit which allows electrical current flow into your electrical appliances and equipment. While sockets differ in shapes and sizes according to the country you are in, their functionality remains similar across the board. Generally, we see 2-pin, 3-pin and 5-pin sockets in our homes and offices. The other thing that differentiates sockets is voltage capacity, i.e., the amount of current it can pass. In India, the three-pin plug is rated at 6A / 250V. And the sockets can also devided into different standards like UK Standard Switch Socket, South America Switch Socket, Italian Socket and Thailand Switch Socket.
Two-pin sockets: These electrical sockets feature two long connection slots, providing an ungrounded connection.
Three-pin sockets: This type of electrical socket adds a ground pin to help prevent electric shock from loose wiring.
Five-pin socket: It's a combination of the two-pin and three-pin socket.
Universal or International sockets: These modular socket designs have pinholes that can accommodate a diverse range of plugs used in American and European countries.
Electrical Modules
These modules serve specific purposes for lighting and cooling solutions in home and office.
Dimmers: Relatively new in use, dimmers allow you to increase or decrease the brightness levels of indoor lights, mood lighting etc. Dimmers also connect seamlessly with Smart Home solutions, providing dramatic control of your home's atmosphere.
Fan Regulators: Similar to dimmers, fan regulators are used for increasing/decreasing ceiling fan speeds as needed. The most common types of fan regulators offer 4-step or 5-step speed controls.
Power Units: Basically, a combination of switch and socket in a single module, these units are used for supplying power to heavy-duty appliances. However, after the onset of modular switches and sockets, these units are seeing less use in modern home and office spaces.
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VegeToco? Natural Vitamin E. |
Posted by: Ouopio40 - 01-21-2022, 04:00 AM - Forum: My Forum
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VegeNutri? Nutrition Ingredients are definitely necessary in our body system and NatoDant? Natural Anti-Oxidant is a typical one.
The process of oxidation in the human body damages cell membranes and other structures, including cellular proteins, lipids and DNA. When oxygen is metabolised, it creates unstable molecules called "free radicals", which steal electrons from other molecules, causing damage to DNA and other cells.
The body can cope with some free radicals and needs them to function effectively. However, the damage caused by an overload of free radicals over time may become irreversible and lead to certain diseases (including heart and liver disease) and some cancers (such as oral, oesophageal, stomach and bowel cancers). Oxidation can be accelerated by stress, cigarette smoking, alcohol, sunlight, pollution and other factors.
Another indispensiable element is VegeToco? Natural Vitamin E. Vitamin E is found naturally in some foods, added to others, and available as a dietary supplement. “Vitamin E” is the collective name for a group of fat-soluble compounds with distinctive antioxidant activities.
Naturally occurring vitamin E exists in eight chemical forms (alpha-, beta-, gamma-, and delta-tocopherol and alpha-, beta-, gamma-, and delta-tocotrienol) that have varying levels of biological activity. Alpha- (or α-) tocopherol is the only form that is recognized to meet human requirements.
Serum concentrations of vitamin E (alpha-tocopherol) depend on the liver, which takes up the nutrient after the various forms are absorbed from the small intestine. The liver preferentially resecretes only alpha-tocopherol via the hepatic alpha-tocopherol transfer protein; the liver metabolizes and excretes the other vitamin E forms. As a result, blood and cellular concentrations of other forms of vitamin E are lower than those of alpha-tocopherol and have been the subjects of less research.
Antioxidants protect cells from the damaging effects of free radicals, which are molecules that contain an unshared electron. Free radicals damage cells and might contribute to the development of cardiovascular disease and cancer. Unshared electrons are highly energetic and react rapidly with oxygen to form reactive oxygen species (ROS). The body forms ROS endogenously when it converts food to energy, and antioxidants might protect cells from the damaging effects of ROS. The body is also exposed to free radicals from environmental exposures, such as cigarette smoke, air pollution, and ultraviolet radiation from the sun. ROS are part of signaling mechanisms among cells.
Vitamin E is a fat-soluble antioxidant that stops the production of ROS formed when fat undergoes oxidation. Scientists are investigating whether, by limiting free-radical production and possibly through other mechanisms, vitamin E might help prevent or delay the chronic diseases associated with free radicals.
In addition to its activities as an antioxidant, vitamin E is involved in immune function and, as shown primarily by in vitro studies of cells, cell signaling, regulation of gene expression, and other metabolic processes. Alpha-tocopherol inhibits the activity of protein kinase C, an enzyme involved in cell proliferation and differentiation in smooth muscle cells, platelets, and monocytes. Vitamin-E–replete endothelial cells lining the interior surface of blood vessels are better able to resist blood-cell components adhering to this surface. Vitamin E also increases the expression of two enzymes that suppress arachidonic acid metabolism, thereby increasing the release of prostacyclin from the endothelium, which, in turn, dilates blood vessels and inhibits platelet aggregation.
Except these, many types of element are inconspicuous but important in our daily life such as LowChol? Phytosterol, VegeLipi? Micro-encapsulated Lipid Powder, NutraColor? Natural Color, SoliPro? Micro-encapsulated Solid Powder, NatenFla? Natural Flavors, etc.
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Portable Submersible Pump |
Posted by: Ouopio40 - 01-21-2022, 03:55 AM - Forum: My Forum
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A submersible pump is a mechanical equipment that works by pushing the water toward the surface instead of pulling it. It has a hermetically sealed motor connected to the pump body that helps to push the fluid toward the surface. It is a most famous type of the centrifugal pump. A submersible pump mainly uses to pump the water from the wells. This type of pump pushes water toward the surface by changing the rotatory motion (speed) into kinetic energy, and diffuser blades further convert this K.E into pressure energy.
These pumps are also can be customized such as Sewage Pump, Portable Submersible Pump and Control Panel for Submersible Pump.
The significant benefit of this pump is that it can prevent the pump from cavitation - these pumps are known as submersible pumps because these submerge entirely in the water. Therefore, the principal purpose of these pumps is to pump water out of the tanks, wells, or other vessels by submerging into the water or other fluids. These pumps also use in hot water-heavy oil applications where pressurized liquid from the ground is used to power a hydraulic motor in wells instead of an electric motor. Typically, this pump doesn't require priming because it completely submerges in the fluid. However, this high-quality pump creates complexity and cannot function properly without problems, so it is never taken out of the water.
The working of the submersible pump is a little bit different than a jet pump. Because jet pumps transfer the fluid by pulling it while submersible pumps transfer the fluid by pushing it. A submersible water pump is a machine that is linked with a completely sealed motor. It is a type of centrifugal pump. Therefore, its working is very similar to other types of centrifugal pumps. Submersible pumps submerge entirely in the water.
During the working of the submersible water pump, it pushes the water toward the surface. As the water of well or reservoir enters into the pump by the foot valve, it strikes the impeller. An impeller is a rotatory unit that has multiple fixed blades. This impeller is connected with an electric motor through a shaft. The impeller rotates with the rotation of the shaft. As the water strikes the blades of the impeller, the blades convert the water kinetic energy into speed and increase the speed of the water. After passing through the impeller, the water enters into the diffuser, which further transforms the speed of the water into pressure energy. In this way, the diffuser increases desired pressure of the water. After that, pressurized water discharges through the outlet valve of the pump. In this way, submersible pumps push the water towards the surface.
The major advantage to a submersible pump is that it never has to be primed, because it is already submerged in the fluid. Submersible pumps are also very efficient because they don't really have to spend a lot of energy moving water into the pump. Water pressure pushes the water into a submersible pump, thus "saving" a lot of the pump's energy. Also, while the pumps themselves aren't versatile, the selection certainly is. Some submersible pumps can easily handle solids, while some are better for liquids only. Submersible pumps are quiet, because they are under water, and cavitation is never an issue, because there is no "spike" in pressure as the water flows through the pump.
There are a few disadvantages with submersible pumps, and two have to do with the seal. The seals can become corroded with time. When that happens, water seeps into the motor, rendering it useless until it is repaired. Also, that seal makes the submersible pump a bit difficult to get into for repairs. The other main disadvantage is that one pump does not fit all uses. Single stage pumps are used for most home and light industrial pumping. This includes aquarium filters, sewage pumping, or sump pumps for drainage. Multiple stage pumps are used for anything underground, such as water wells or oil wells. Also, pumps are made to work with thin liquids like water, or thick ones like sewage. Caution must be used with submersible pumps. They must be fully submerged. The water around a submersible pump actually helps to cool the motor. If it is used out of water, it can overheat.
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Heavy Duty Floor Spring, |
Posted by: Ouopio40 - 01-21-2022, 03:53 AM - Forum: My Forum
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A floor spring is a mechanical door closing device mostly used for glass doors along with patch fitting. Floor springs are mostly used where both pull and push movement is required. The most prominent area where floor springs are used is in Interior doors of a Business park, Malls, Hospital building.
There are many different kinds of floor spring like Heavy Duty Floor Spring, Light Duty Floor Spring, Single Cylinder Floor Spring and Double Cylinder Floor Spring and they have three must-have features in common.
Invisibility
First, Floor Springs are suitable for aesthetic door systems. They must be virtually invisible not to ruin the general look of the whole door. Because the aesthetic factor is necessary, people produce many different types of floor springs to adapt with different types of doors. They can change the material, size or color to achieve a final purpose: its invisibility. However, their features also must comply with standards about size, material to ensure safety.
Adaptability
Floor springs must be suitable for every type of door. There are some materials people usually use to make doors. Glass doors are seemed to be very popular with people. Every house, closed-restaurant, shop, kiosk, supermarket, mall, … uses glass as a popular material for its door system. Besides, we can see that wood is also a favored kind of door material. Another kind of material is Aluminum. Aluminum is a popular, affordable and durable material in use for doors. Nowadays, many researches show that Fiberglass can be the most ideal material. Evidence indicates that doors made from fiberglass have scratch resistance capability for many years. Thus, aesthetic will be enhanced maximally.
Floor springs are especially ideal for big-sized doors. These doors are almost heavy and big. People need more energy to push or pull these doors than smaller doors using door handles. Therefore, selected floor springs must have certain requirements about closing force, closing speed and latch action. To ensure adaptability of floor springs, all these numbers must be adjustable. Besides, they also must comply with pre-registered standards guaranty the quality as well as safety.
Affordability
Customer's budget always is an important thing. HeleH door lock has two types of HeleH floor springs which are under a suitable price. The given price is not including installation fee yet.
Another similar device is called door closers. A door closer, very simply, is a type of hardware that is used to close a door either mechanically or automatically. It has developed into many different types like Heavy Duty Door Closer, Economical Door Closer, Overhead Door Closer and Concealed Door Closer.
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Turbocharger for Audi |
Posted by: Ouopio40 - 01-21-2022, 03:50 AM - Forum: My Forum
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A turbocharger is a device fitted to a vehicle's engine that is designed to improve the overall efficiency and increase performance. This is the reason why many auto manufacturers are choosing to turbocharge their vehicles. The new Chevrolet Trax and Equinox are both offered with turbocharged engines and as time goes on, more and more vehicles will be fitted with them.
A turbocharger is made up of two main sections: the turbine and the compressor. The turbine consists of the turbine wheel and the turbine housing. It is the job of the turbine housing to guide the exhaust gas into the turbine wheel. The energy from the exhaust gas turns the turbine wheel, and the gas then exits the turbine housing through an exhaust outlet area.
The compressor also consists of two parts: the compressor wheel and the compressor housing. The compressor's mode of action is opposite that of the turbine. The compressor wheel is attached to the turbine by a forged steel shaft, and as the turbine turns the compressor wheel, the high-velocity spinning draws in air and compresses it. The compressor housing then converts the high-velocity, low-pressure air stream into a high-pressure, low-velocity air stream through a process called diffusion. The compressed air is pushed into the engine, allowing the engine to burn more fuel to produce more power.
In addition to the extra power, turbochargers are sometimes referred to as devices that offer "free power" because unlike a supercharger, it does not require the engine's power to drive it. The hot and expanding gasses coming out of the engine are what power a turbocharger so there is no drain of the engine's net power. Turbocharged engines are also not affected in the same way as naturally aspirated engines are when they go at higher altitudes. The higher in altitude a naturally aspirated engine climbs, the harder it becomes for it to get oxygen due to the thinning atmosphere. A turbocharger gets around this problem because it forces the oxygen into the engine's combustion chamber, sometimes at 2 times the pressure of the atmosphere.
Turbochargers also improve the fuel efficiency of a vehicle however there is a misconception when it comes to turbocharged vehicles and fuel efficiency. Taking a naturally aspirated engine and slapping on a turbocharger on it will not improve fuel efficiency. The way that manufacturers improve fuel efficiency though turbocharging is by down-sizing an engine and then turbocharging it. For example, take a 2.5L inline-4 cylinder naturally aspirated engine and decrease the displacement to 1.4L and then turbocharger it. The smaller, turbocharged engine would still have the same performance figures (or slightly better) but because of the smaller displacement, it would also use less fuel.
In automotive applications, "boost" refers to the amount by which intake manifold pressure exceeds atmospheric pressure at sea level. This is representative of the extra air pressure that is achieved over what would be achieved without the forced induction. The level of boost may be shown on a pressure gauge, usually in bar, psi or possibly kPa. The control of turbocharger boost has changed dramatically over the 100-plus years of their use. Modern turbochargers can use wastegates, blow-off valves and variable geometry, as discussed in later sections.
In petrol engine turbocharger applications, boost pressure is limited to keep the entire engine system, including the turbocharger, inside its thermal and mechanical design operating range. Over-boosting an engine frequently causes damage to the engine in a variety of ways including pre-ignition, overheating, and over-stressing the engine's internal hardware. For example, to avoid engine knocking (also known as detonation) and the related physical damage to the engine, the intake manifold pressure must not get too high, thus the pressure at the intake manifold of the engine must be controlled by some means. Opening the wastegate allows the excess energy destined for the turbine to bypass it and pass directly to the exhaust pipe, thus reducing boost pressure. The wastegate can be either controlled manually (frequently seen in aircraft) or by an actuator (in automotive applications, it is often controlled by the engine control unit).
Therefore, there are many kinds of turbocharger for different types of vehicles like Turbocharger for Audi, Turbocharger for Seat, Turbocharger for Skoda, Turbocharger for Volkswagen, Turbocharger for BMW, Turbocharger for Mercedes-Benz, Turbocharger for Toyota, Turbocharger for Volvo, Turbocharger for Hyundai, etc.
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Floating Aluminum Paste |
Posted by: Ouopio40 - 01-21-2022, 03:48 AM - Forum: My Forum
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Aluminum Paste, also called Floating Aluminum Paste or Aluminum Pigment Paste is a mixture of solvent or water and aluminum pigments with particle shapes and sizes that have been manipulated through a milling process to create aesthetic properties. Both chemical solvents and water can be used as a liquid when producing aluminum paste.
Aluminum paste is a packaged metallic pigment or dust. Aluminum pigments are used to create the metallic aesthetics found in a wide range of paints, coatings and inks. Manipulating the particle shape and size within the coating, ink or masterbatch (ink for Graphic Arts and masterbatch for plastics) creates different effects. It is not enough to simply add pigments to a paint or ink. The aluminum pigments are combined with a dispersant comprised of solvent or water to create a paste. Often, the Paste is referred to a slurry or a pigment slurry.
The reason for not using dry pigments is that dry pigments are not typically used is for safety and easy handling. Aluminum flake and dust are referred to as fines. These airborne fines can quickly spread heat when ignited. If exposed to electricity, phenomena known as arch flash will occur. The very dust used intentionally to aid rocket boosters and pyro techniques, presents severe hazards as a machining and thermal spray byproduct. Additionally, manufactures of coatings, inks or masterbatched containing aluminum metallic pigments do not want to create this hazardous dust during their production.
A variety of solvents can be used to create paste. While the solvent used will depend on the end use, mineral spirit is common. Even water can be used should the paste be needed for water based coatings. Water based aluminum paste is also used in lightweight concrete. A water and alkaline solution, mixed with aluminum, will give off gasses that result in small air pockets within the concrete. The result is a lighter concrete known as "aerated concrete." Generally, Aluminum flake pigments can react with water. When the two are combined, they create hydrogen. Hydrogen is a flammable and dangerous gas if not properly handled.
Metallic Aluminum Paste are used in the paints and coatings industry for both their optica effects as well as for their functionality. Effect pigments are always lamellar (flakes) and their particle diameter is larger than the one of color pigments. And the Aluminum Paste is often made by Aluminum Powder like Atomized Aluminum Powder, Spherical Aluminum Powder, Aluminum Silver Powder and so on. While the particle size of color pigments is in the wavelength range of visible light, the flake diameter effect pigments is generally around 5-45 μm. And there are many different kinds of Aluminum Paste like Fine White Aluminum Pigment and Sparkle Aluminum Paste.
In many cases the properties of metallic effect pigments can be deduced directly from the production process. The gold bronze pigments are dry milled in ball mills (Hametag process), but for safety reasons aluminum pigments are produced almost exclusively in a wet milling process adding white spirit (Hall process).The raw material - atomized, spattered aluminum with a minimum purity of 99.5% according to EN 576 – is milled respectively shaped to flake-like particles in ball mills, filled with grinding aids (lubricant).
The milling parameters and the lubricant are determined by the application for which the aluminum paste pigment is intended. The pigment slurry is screened, pressed on filter presses and adjusted in mixers to a ratio of 65% solids and 35% solvent. The final product can be tailor-made for its later application by the addition of particular solvents or additives to the filter cake.
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Niti Rotary Files |
Posted by: Ouopio40 - 01-21-2022, 03:45 AM - Forum: My Forum
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There are many reasons for root canal treatment. In most cases, the main reason is pulp or periradicular tissue infection, but sometimes, due to prosthodontic rehabilitation, some teeth need to be edodontically treated. Whatever the cause is, the essence of the procedure is pretty much the same. The main idea is to remove the pulp tissue and the infection from the pulp chamber and root canal system, which is followed by obliteration of this empty space with adequate filling materials. Since endodontic dental procedures weren't always the treatment of a first choice for a toothache the alternative option was usually tooth extraction. With the development of new materials, instrument and devices the survival rate of endodontically treated teeth have significantly raised in the last 20 years.
Endodontic files and reamers are surgical instruments used by dentists when performing root canal treatment. These tools are used to clean and shape the root canal, with the concept being to perform complete chemomechanical debridement of the root canal to the length of the apical foramen. Preparing the canal in this way facilitates the chemical disinfection to a satisfactory length but also provides a shape conducive to obturation (filling of the canal).
Diagnostic procedures didn't change much except in the area of radiographic diagnostic and with the introduction of CBCT technology in everyday dental practice. This kind of radiographs allows the dentist to explore the suspect tooth and the surrounding tissues much more precisely. The presence of the periradicular lesion can be seen in all three dimensions so as the presence of missed or accessory canals. In many cases, this diagnostic method helped mainly in failed endodontic treatment and their successful retreatment.
One of the most important steps in endodontic procedures is mechanical cleaning and irrigation of the root canal system. The main goal is to mechanically clean the debris from the canal walls and to wash it out of the canals. For mechanical cleaning different types of files can be used, rotary or hand files, made out of stainless steel or Nickel-Titanium. Intensive development of endodontic starts in the mid of 18th century, with intensive progress through the 19th century. During this period dentists and scientists from all over the world explored different opportunities for saving the inflamed tooth by preserving the pulp tissue or removing it from the tooth in order the save the one. First, the stainless-steel hand files were used for removing the pulp and debris from the canal system. Several techniques were introduced by well-known doctor Schilder: crown-down, step-back and balance-forced technique. These techniques are still learned in dental schools around the Globe, as fundamentals of endodontics, and many dentists still use only these techniques with great success.
There are many classifications of endodontic files like Exploring files, Extirpating files, Enlarging files (for cleaning and shaping), Filling files, Niti Rotary Files, Root Canal Files, Veterinary Dental Files, etc.
Exploring files are usually intended for locating and shaping the orifices or removing the calcifications from the pulp chamber. Besides these files, some drills so as specifically designed endo-openers can be used for this purpose. It is important to mention that contemporary endodontics often uses ultrasonic devices with specially designed endo-tips. Different tips are used for detection of orifices, removing the calculus from the pulp chamber, removing metal posts from the canals, irrigation, or even cleaning sclerosed canals. Some tips are intended for endodontic surgeries in the sense of periradicular surgeries, mainly for retrograde closure of obturated canals that cannot be treated by conventional endodontic treatment.
Except that, there are also other dental tools are needed during the dental treatment such as Dental Burs including Diamond Burs and Tungsten Carbide Burs, Dental Drills, Dental Gutta Percha, Dental Paper Point, etc.
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