摘要
为了查找国产路面铣刨刀具使用寿命短的原因,采用金相、扫描电镜、能谱分析仪、洛氏硬度仪等测试手段对比分析了国外Wirtgen刀具和国内某厂刀具选用的各部分材料在成分、组织和性能的差异。依据分析和测试结果建议国产刀具采用高致密度含钴量不低于8%的硬质合金作为刀头材料,选用5CrMnMo等有较高抗回火温度的合金钢制造刀体并热处理至回火马氏体组织,选用BCu84MnNi铜基钎料和气体保护钎焊连接刀头与刀体。
In order to find out the reason of short life of domestic tool,the tools made in foreign Writgen and China were compared and analyzed by optical microscope,scanning electron microscope,energy spectrometer and Rockwell hardness meter.Based on the analyzed and tested results,some proposals were put forward about domestic tool.Cemented carbide with high density and cobalt content not less than 8% is selected as tool head material.Alloy steel with high resistance to tempering temperature such as 5CrMnMo is used as tool body material,and its structure must be tempered martensite.The brazing filler metal of copper base alloy BCu84MnNi and gas protect brazing were recommended to join the tool head to the tool body.
出处
《焊接》
北大核心
2011年第8期30-33,70,共4页
Welding & Joining
基金
国家自然科学基金青年科学基金项目(50905047)
哈尔滨市青年科技基金项目(2009RFQXG204)
关键词
路面铣刨刀具
硬质合金
钎焊
road milling and planning tool
cemented alloy
brazing
作者简介
毕凤阳，1976年生，博士研究生，教师，主要从事材料成形加工及其数字化方面的研究，已发表论文10余篇，EI收录4篇。
