2014年6月18日星期三

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。

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