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Production of powder metallurgy process

News sources :网络转载 editor :admin Browse the number :1418



Powdermetallurgyproductionprocess:

1, the production of powder.Powderproductionprocessincludingpreparationofpowder,powdermixingandothersteps.Toimprove the formabilityandplasticityofpowderusuallyaddingplasticizers,suchasgasoline,rubberorwax.

2,pressing.Powderunder500~600MPa pressure,pressedintothedesiredshape.
3,sintering.Madein the protectiveatmosphereorvacuumfurnaces for hightemperaturefurnace.Sintering is differentfrom the metalmelting,sinteringstillhaveatleastoneelementisin the solidstate.Powderparticlesbydispersionin the sinteringprocess,recrystallization,welded,combined,dissolvedandaseriesofphysicalandchemicalprocesses,intoacertainporosityofmetallurgicalproducts.
4,aftertreatment.Undernormalcircumstances,sinteredparts is eitheruseddirectly.Butfor a certainsizerequirement of highprecisionandhighhardnessandwearresistanceof the workpieceshouldbecarriedoutaftersintering.Processingincludesseminal,rolling,extruding,afterhardening,surfacehardening,dippingoils,andinfiltration.

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