我厂生产的汽车分动箱的制动盛支座系铁素体球墨铸铁,牌号为 QT42—10。开始采用热处理来满足要求,一般需10余小时,如渗碳体超过含量时,则处理时间要长达14～15小时,不仅生产周期长,工作量大,而且能源消耗也大。故改用铸态铁素体球铁进行生产。一、炉料选用1.生铁应选用 Q10、Q13、Z14(最好是本溪生铁)或其它低硫磷生铁(1级、1类、1组),其含 Si 最为1～1.5%,含 Mn<0.5%。2.废钢应选用普通钢,如废型钢、钢板、管子等。注意不得混有合金钢、轴承钢、刀具等废 I plant the transfer case of the brake Shing-bearing ferrite ductile iron, grade QT42-10. The beginning of heat treatment to meet the requirements, generally takes more than 10 hours, such as cementite content exceeds, then the processing time to up to 14 to 15 hours, not only long production cycle, heavy workload, but also large energy consumption. Therefore, the use of cast iron ferrite ductile iron production. First, the charge selection 1 pig iron should be used Q10, Q13, Z14 (preferably Benxi pig iron) or other low-phosphorus phosphorus pig iron (Class 1, Class 1, Group 1), which contains Si most 1 to 1.5% 0.5%. 2. Scrap should use ordinary steel, such as scrap steel, steel, pipe and so on. Be careful not to mix with alloy steel, bearing steel, cutting tools and other waste