Explanation

It is also called Babbitt metal alloy, which is based on lead and added with elements such as Sb, Sn, Cu, Na, etc. One is lead antimony copper alloy and lead antimony calcium alloy with simple composition; Another type is the addition of elements such as copper, nickel, cadmium, and arsenic on the basis of lead, antimony, and tin. The structure of lead-base bearing alloy is that hard particles are evenly distributed on the soft base of lead. Compared with tin-base bearing alloy, lead-base bearing alloy is brittle and easy to cause fatigue cracks. The thermal conductivity, coefficient of thermcal expansion, casting performance and corrosion resistance of alloy are lower than those of tin base alloy. However, the strength performance is close to or slightly higher than that of tin based alloy, and the price is low, so it is widely used. Mainly used for manufacturing bearings with medium or high-speed low loads, low impact force during operation, and temperatures below -150 ° C.

Classification