Ecvv Trade
AVK Press Ltd.

China Manufacturer with main products: Powder Metallurgy, Mim, Metal Injection Molding, Casting, Die Casting, Carbides, CNC Machining, Sintering

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sintered parts

Payment Terms: L/C, T/T

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe


Sintering is static when a metal powder under certain external conditions may exhibit coalescence, and yet reverts to its normal behavior when such conditions are removed. In most cases, the density of a collection of grains increases as material flows into voids, causing a decrease in overall volume. Mass movements that occur during sintering consist of the reduction of total porosity by repacking, followed by material transport due to evaporation and condensation from diffusion. In the final stages, metal atoms move along crystal boundaries to the walls of internal pores, redistributing mass from the internal bulk of the object and smoothing pore walls. Surface tension is the driving force for this movement.

Particular advantages of the powder technology include:

1.     Very high levels of purity and uniformity in starting materials.

2.     Preservation of purity, due to the simpler subsequent fabrication process that it makes possible.

3.     Stabilization of the details of repetitive operations, by control of grain size during the input stages.

4.     Absence of binding contact between segregated powder particles as often occurs in melting processes.

5.     No deformation needed to produce directional elongation of grains.

6.     Capability to produce materials of controlled, uniform porosity.

7.     Capability to produce nearly net-shaped objects.

8.     Capability to produce materials which cannot be produced by any other technology.

9.     Capability to fabricate high-strength material like turbine blades.

10. After sintering the mechanical strength to handling becomes higher.

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