RE对Q345钢感应渗硼及耐磨性能的影响  

Effect of RE on Inductive Boronizing Process and Wear Resistance of Q345 Steel

作　　者：杨光[1] 朱飞勇[1] 

机构地区：[1]集美大学机械工程学院,福建厦门361021

出　　处：《热加工工艺》2013年第24期165-168,共4页Hot Working Technology

基　　金：福建省自然科学基金资助项目(2010J01007)

摘　　要：为了降低挖斗焊接耐磨板的成本,采用表面热处理方式提高其耐磨性。在感应渗硼的渗硼剂中添加RE,改善Q345钢渗硼组织的同时,增加了渗硼层厚度,在RE催化感应渗硼过程中得到共晶渗硼层,而且其表层出现软硬相配的组织结构。通过正交试验,考察渗层厚度和硬度分布,其最佳工艺为:感应间隙19.5mm,有效感应加热时间7min,5%RE,加热功率4140 W。由耐磨性试验可知,Q345钢RE感应渗硼后耐磨性得到极大提高。In order to reduce the cost of welding wear-resisting board for digging bucket,the surface heat treatment was adopted to improve its wear resistance.Adding lanthanum chloride RE into the boronizing paste of inductive boronizing,the boron microstructure of Q345 steel was improved and the thickness of the boron layer was increased.Eutectic boride layer and soft-hard match organizational structure on its surface can be obtained in the process of the RE catalytic inductive boronizing.Both thickness and hardness distribution to the boride layer were analyzed and the optimum process which was obtained from boron RE orthogonal test is that： inductive gap is 19.5 mm,effective induction heating time is 7 min,the percentage of lanthanum chloride content 5%,the heating power 4140 W.Wear resistance test shows that the boride layer of Q345 steel is obtained from boron RE inductive boronizing and it has the best wear resistance.

关 键 词：RE 感应加热 共晶渗硼层 耐磨性 

分 类 号：TG156.87[金属学及工艺—热处理]