热处理对双液双金属复合铸造颚板齿尖材质的影响  

The Effect of Heat Treatment on Two-melt Cast Bimetal Tooth Points for Jaw Plate

作　　者：荣守范[1] 郭楠[1] 郭继伟[1] 张春照[2] 孟叔卫[1] 张岩[1] 

机构地区：[1]佳木斯大学材料科学与工程学院,黑龙江省佳木斯154007 [2]佳木斯煤矿机械有限公司,黑龙江省佳木斯154007

出　　处：《金属功能材料》2009年第5期22-26,共5页Metallic Functional Materials

基　　金：黑龙江省06攻关(GC06A211);黑龙江省教育厅耐磨材料中心(EY-2008-04);黑龙江省佳木斯大学校企研究生创新基地基金(E080601)资助

摘　　要：针对颚式破碎机颚板齿尖工作环境恶劣,经常出现脆断、易磨损,以及使用寿命周期短等问题,通过调整热处理工艺参数,利用SEM、维氏硬度计等检测方法,研究了热处理工艺对材料的显微组织和性能的影响。实验结果表明,在奥氏体化温度840℃～900℃范围内,随温度的升高冲击韧性略有下降,硬度下降,但是变化不明显;冲击韧性随等温温度的升高而增加,硬度有所降低;随等温时间的增加,材料硬度减少,其数据相差较大,而韧性随等温时间的增加而增加。热处理工艺为870℃×1.5 h＋260℃×60 min时材料具有良好的综合力学性能,这说明不同的热处理工艺对该材料的影响,合适的工艺有助于其力学性能的提高。In the light of the problem in tooth points of jaw plate in a jaw crusher such as adverse working circumstances,brittle fracture,easy wear,and short life etc. the effect of heat treatment process on the microstructure and properties of sample was investigated by adjusting heat treatment parameters and using SEM and Vickers hardometer. The test results show that in the range of 840-900℃, the impact toughness and hardness slightly decrease with increasing austenitizing temperature. The impact toughness increases and hardness decreases with increasing iso-thermal temperature. The hardness decreases and toughness increases with increasing isothermal time. The material heat treated with 870℃× 1.5 h＋260 ℃× 1 h has excellent machanical properties combination,indicating that suitable heat treatment process is conducive to promotion of mechanical properties.

关 键 词：复合铸造 颚板 贝氏体 冲击韧性 

分 类 号：TG156[金属学及工艺—热处理]