用铅青铜浇铸轴承时,铅有不同形式的偏析:下沉,析出、偏析颗粒堆积在合金内。合金与轴承体之间出现脆的夹层特别值得注意,因为脆的夹层能破坏青铜与钢的接合强度。 铅青铜浇铸轴承的工艺过程包括以下各主要工序: 1.制造铅青铜; 2.浇铸前制造模子、准备模子和轴承; 3.浇铸; 4.冷 Lead cast bronze bearings, lead has different forms of segregation: sinking, precipitation, segregation of particles accumulated in the alloy. A brittle interlayer between the alloy and the bearing body is particularly noteworthy because the brittle interlayer can destroy the bond strength of the bronze to the steel. Lead bronze casting bearing process includes the following major processes: 1. Manufacture of lead bronze; 2. Before casting mold manufacturing, molds and bearings; 3. Casting; 4. Cold