It's used for the production of large castings . 它用于大型铸件的制备。
Zinc base die castings are always copper plated in cyanide baths . 锌基合金的压铸件总是在氰化镀液中镀铜。
Ribs are sometimes add to the webs of castings to give greater strength and rigidity . 有时在铸件的腹板上加上肋条,以增强其强度和刚度。
All lead castings were produced at first by hand in many cases from single cavity molds . 起初所有的铅铸件都是手工生产的,而且在许多情况下都是使用单腔模具。
The temperature of the lead should be such that it is just enough to produce satisfactory castings in a heat-stabilized mold . 铅液的温度要正好适宜于在热稳定的模具中铸出合格铸件。