powder metal-How Is the Alloy Wheel Made?

Alloy wheels arepowder metal made from an alloy of magnesium and aluminium。 Alloys are a mix of metal and other elements。 They provide greater strength over pure metals， which is softer and more ductile。

Alloy wheels is not only more attractive than normal steel wheels， they are also a fraction of the weight and are far more durable。 Therefore it requires less energy to rotate。 This contributes to greater fuel efficiency as well as acceleratingpowder metal， handling and braking。 Manufacturing begins with high grade aluminium alloy， containing 97 percent aluminium。 A furnace heats up to 750 degrees and is liquefied within 25 minutes。 The molten aluminium then flows directly into a mixer in which they inject argon gas， which enables them to remove the hydrogen。 This increases the density making the aluminium less porous when solidified。

After adding powder titanium， magnesium and other metallic elements to further strengthen the aluminium， they blend in a chemical that draws aluminium oxide to the surface。 The three wheel moulds are made of high strength of steel。 The upper mould forms the inside face of the wheel， the forepart side forms the wheels edge and the lower mould forms the outer face that is the side of the design。 The outer face is the most important mould as it forms the wheel´s design。

It takes about 3 to 4 weeks to produce a mould。 Computer simulations check the flow and temperature of the liquid aluminium。 These are factors that are critical to prevent casting defects。 The casting machine is designed to fill the mould from the bottom via pressurised injection。 Injecting upwards through the bottom rather than pouring downwards into the top reduces the risks of air bubbles which causes defects。 The mould is then submerged into cold water to cool it off for better handling。 The newly cast alloy wheels are trimmed and cleaned with a blade then put into a very hot oven for 12 hours。

The wheel is then tested and submerged into water to check for air bubbles。 Thereafter the wheel proceeds to the painting area。 Firstsintered metal the base coat is applied then a coat of colour which can be anything from a classic silver or black to a flashy shade。 Finally a clear paint is applied to prevent corrosion。 There are random selections of wheels taken to test for performance and wear。 The decorative cap that covers the centre hub is installed。 It is this part of the wheel that typically bears the specific brand´s logo。

A1 Wheel and Tyre is a private family owned and operated company specialising in the warehouse and distribution of wheels and tyres to the automotive fitment tradesintered metal。 The company has a well established operation in Johannesburg， South Africa。

sintered metal-Plastic Sintering and Its Advantages

There are many apowder metaldvantages to producing plastics via a method known as sintering。 The main way in which this method is different to other plastic production methods is that the raw material is taken in its powdered form。 This provides many advantages as it enables the manufacturer to begin with raw materials of very high purity and， as this process contains fewer steps than a lot of plastic production techniques， it allows the resin to remain purer throughout the entire process。

Sintering also does not require the plastic powder to reach it´s melting point in order for the particles to fuse and become one solid object， therefore this is a favoured method of production when handling materials with particularly high melting points， for example molybdenum and tungsten。 This process can also enhance the plastics strength， heat and electrical conductivity， and can be used to manipulate the plastics surface texture i。e。 it can either create incredibly smooth surfaces or porous surfaces depending on the desired product。 This can easily be determined by controlling the amount of fluid and gas that comes into contact with the resin during the sintering process。 For example a porous surface area will suit a product that needs a paint or wax finish as this will allow the paint or wax to adhere to the plastic more strongly。

Sintering technologies can be applied to many different raw materials and is also used in the production of ceramics and metals。 These can also be added to the plastic powder during the very early stages of production in order to create a stronger material。

Sintering occurs when the powdered form of resin and any additives or colorants are thoroughly mixed together and placed in an appropriate mould。 This mixture is then heated (it is not necessary to heat fully tosintered metal reach the resins melting point) and the powdered particles begin to adhere to each other。 This occurs via a process known as atomic diffusion which occurs in all materials but is speeded up by the presence of heat。 As these powdered particles begin to reach a high enough temperature they begin to fuse their boundaries together to form one solidified object。 Once the resin has filled all corners of the mould and has fused together it is left to cool slowly until it is cool enough for the finishing touches to be made， this could be painting or waxing or adding additional plastic parts to complete the product。