Hangzhou Powder Metal parts

Compressed iron powder sintering is usually by adding some alloying elements to iron powder to improve the sinteringperformance. Due to the presence of boron, when sintering temperature is above 1165-1175 will appear liquid.. Powder metallurgy as a metal-processing technology containing metal powder preparation and sinter it as close meshed component. This rearrangement has two stages, primary rearrange mainly consist of individual particles, that is the random filled of mixing powder and the non-uniform capillary forces produced by liquid not evenly distributed in all contact particles, thus giving rise to sintering densification. The balance system of boron and iron does not allow the three allotropes of iron dissolved in it. However, the void ratio of vast majority of powder sintering parts are more than 5l%, so there have been all kinds of sintering technology used for getting higher density and improving sintered components performance.6% boron in iron alloy can get completely compact and materials mechanical properties significantly improved.mhcmp. For complete dense can select different boron additives, this is due to its excellent wetting properties and the very low solubility in the solid. It is well known that during the sintering process, because of the capillary forces to wetting liquids, materials liquid-phase will rearrange. Traditional powder metallurgy including metal powder mixed powder pressing and pressed body sintering under different climate.4-0. Material loss is performance as the area, volume and quality, expressed as the abrasion value and abrasion rate, its loads way and loads time is closely related. Relatively small particles have a greater degree of capillary stresses, which pulls together particles lead to material rapidly shrink, therefore total phase improve the material density and hardness. Observe from added 1WT% boron additives alloy microstructure found that all grains are surrounded by eutectic phase. Use the countdown of ,Sintered Metal parts ...ادامه مطلب