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四川链条厂为了充分发挥金属材料的潜力、节约金属材料,延长使用寿命、简化工艺过程,针对该厂生产的节距为12.7的套筒滚子链条的滚子进行了低碳马氏体试验。滚子材料为20碳钢,淬火规范为920℃盐炉加热,保温5分钟后迅速淬入10%的氯化钠水溶液,获得低碳马氏体织织,经180～200℃硝盐回火,硬度为HRA73—77。试验结果表明,对这一薄壁零件,可以淬透,未见软点,可达到要求的硬度;从抗压试验看,压溃力较渗碳处理的可提
In order to give full play to the potential of metal materials, save the metal materials, extend the service life and simplify the process, Sichuan Chain Factory carried out a low-carbon martensitic test on rollers of the sleeve roller chain with a pitch of 12.7. The material of the roller is 20 carbon steel, the quenching specification is 920 ° C salt furnace heating, after quenching for 5 minutes, it is rapidly quenched into 10% sodium chloride aqueous solution to obtain low-carbon martensite weave, after being tempered at 180-200 DEG C , Hardness HRA73-77. Test results show that the thin-walled parts can be hardened, no soft spots, can reach the required hardness; from the compression test, the crushing force carburizing treatment can be mentioned