稀土渗硼正交.doc

稀土对感应加热渗硼的影响及工艺
朱飞勇[作者简介] 朱飞勇(1985—),男,硕士生,从事材料表面化学热处理研究。电话:**********,E-mail:zhufeiyong163@。
陈祝平杨光
(集美大学机械工程学院,福建厦门 3621021)
[摘要]在感应加热渗硼的渗硼剂中添加氯化镧稀土,可以改善Q345钢渗硼组织,并增加渗硼厚度。在硼稀土感应加热渗硼中得到的共晶渗硼层,不仅层厚度有了很大的提高,而且其表层出现软硬相配的组织结构。通过硼稀土正交试验,并对试样的厚度和硬度分布的两方面进行综合分析,最佳工艺为:感应加热间隙a=,有效感应加热时间t=8min,氯化镧稀土添加量为3%,加热功率P=4140W。
[关键词] 感应加热;稀土;共晶渗硼层;催渗
[中图分类号] +7 [文献标志码] A
Effect of RE On Induction Heating Boronizing and The Process
ZHU Fei-yong, CHEN Zhu-ping, Yang Guang
(School of Mechanical Engineering, Jimei University, Xiamen 361021, China)
Abstract: Add lanthanum chloride RE into the boronizing paste when induction heating boronizing, it can improved boron tissue on Q345 steel, and increased the thickness of the boron layer. The eutectic boron layer which obtained from boron-RE induction heating boronizing, the thickness would be thicker and it would emerge soft-hard matching tissue structure. By boron-RE orthogonal test, analysing both the thickness and the distribution of the hardness, the best process shown that the induction gap a=, the effective induction heating time t=8min, the additive amount of lanthanum chloride RE was 3%, the power P=4140W。
Key words: induction heating; RE; eutectic Boron layer; accelerated boronizing
0 前言
渗硼一种表面硬化技术,是化学热处理的一种,可以提高工件的硬度。渗硼的方法可分为液体、固体、气体、等离子法[[] 齐宝森,陈路宾,[M].北京:
]。其中电化学渗硼的温度范围一般在850℃-1000℃