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五、渗铜的铁和钢本标准包括由铁和(或)铁合金粉与石墨(碳)粉的混合物制造的粉末冶金材料,在这种材料中,其空洞用铜基材料通过浸渗作用基本上被填充。材料性能浸渗就是用熔触的金属或熔点较低的合金通过毛细管作用填充粉末冶金坯中连通孔隙的过程。渗铜钢是通过把铁粉或铁基粉(含或不含石墨粉)压制成成品形状,并在烧结期间用铜基材料渗入坯连通孔隙制成的。这种制品是钢—铜结构,只有通过粉末冶金工艺才能得到。同烧结铁或碳钢粉末冶金零件相比,渗铜能够提高材料的拉伸强度、延伸率、硬度和冲击性能。
Fifth, copper infiltration of iron and steel This standard includes iron and (or) ferroalloy powder and graphite (carbon) powder mixture made of powder metallurgy materials, in this material, the hole with a copper-based material through the infiltration of basic Is filled. Material property infiltration is the process of filling the interconnected pores in the powder metallurgy billet by capillary action with molten metal or lower melting alloy. Copper infiltration is achieved by pressing iron powder or iron-based powder (with or without graphite powder) into the finished shape and infiltrating the billet through the pores with a copper-based material during sintering. This product is a steel-copper structure, only through the powder metallurgy process can be obtained. Compared with sintered iron or carbon steel powder metallurgy parts, copper infiltration can improve the tensile strength, elongation, hardness and impact properties.