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我厂铁素体可锻铸铁生产,主要有电力线路金具中的耐张线夹、楔形线夹、碗头挂板等;汽车零件中的前后钢板弹簧支座、发动机支座等,牌号为KT33-8和KT35-10。这些零件均承担较大动载荷,在寒带(-20℃以下)工作,不允许由于低温脆性而造成零件断裂。根据这些零件的要求,采用如下生产规范: 熔炼设备:采用冲天炉单一设备熔炼铁水,用室式燃煤反射炉进行石墨化退火。化学成分:
I plant ferritic malleable iron production, mainly in the power line with the resistance in the folder, wedge clamp, bowls hanging plate, etc .; automotive parts before and after the leaf spring bearings, engine bearings, etc., grade KT33-8 And KT35-10. These parts are subject to a larger dynamic load, in the cold zone (-20 ℃ below) work, not allowed to break the parts due to low temperature brittleness. According to the requirements of these parts, the following production specifications are adopted: Smelting equipment: A single device of a cupola is used to melt hot metal and a graphitization annealing is performed with a chamber-fired coal refiring furnace. chemical composition: