正火炉氮气保护与铸件氧化关系的研究  

Research on the Relationship Between Nitrogen Protection and Casting Oxidation of Normalizing Furnace

作　　者：李保强 刘玲玲[2] 

机构地区：[1]机械工业第六设计研究院有限公司,河南郑州450007 [2]郑州财经学院,河南郑州450044

出　　处：《中国铸造装备与技术》2014年第6期25-27,共3页China Foundry Machinery & Technology

摘　　要：针对发动机行业机体、缸盖等铸件在高温正火(退火)过程中氧化严重的问题,研究了一种通过氮气保护减少铸件氧化的方法,并研究了氮气保护与铸件氧化的关系。正火炉在加入氮气保护后,铸件在高温下的氧化大大减弱,同时也降低了后续抛丸工序的难度和成本,对提高生产效率和降低生产成本有一定的推广价值。For a serious problem of oxidation in engine body, cylinder head castings during high-temperature normalizing（annealing）, a method reducing casting oxidation in nitrogen has been developed with the relationship between nitrogen protection and casting oxidation studied. In stoves with nitrogen protection, casting oxidation at high temperatures greatly reduced hence the difficulty and cost of subsequent shot blasting process reduced.h has promotional value of improving production efficiency and reducing production cost.

关 键 词：正火炉 氮气保护 铸件氧化 

分 类 号：TG155.14[金属学及工艺—热处理]