大型覆盖件镶块模具的堆焊工艺及经济效益分析  

Study on hardfacing technology of die insert and its economic analysis

作　　者：何柏林[1] 于影霞[1] 张建新 魏兴宝 

机构地区：[1]华东交通大学载运工具与装备省部共建教育部重点实验室,南昌330013 [2]洛阳第一拖拉机工程机械公司,洛阳471003

出　　处：《机械设计与制造》2009年第11期238-240,共3页Machinery Design & Manufacture

基　　金：原机械工业部教育司科技基金资助项目(95251214);载运工具与装备省部共建教育部重点实验室开放基金资助项目

摘　　要：堆焊刃口的组织和硬度均满足要求,堆焊铸铁镶块的使用寿命与工具钢镶块经整体热处理后的使用寿命相当,可达25000件,比用D322焊条修复的冷冲模的使用寿命提高(30～50)%。以普通铸铁为基体堆焊制造大型覆盖件模具或修复损坏的模具,具有制造和修复工艺简单可靠、模具设计工作量小、周期短、成本低等突出优点。与传统整体制造模具方法相比,设计工作量可减少80%以上,加工设备可减少70%以上,贵重金属材料可节省90%以上。The application results indicated that the chemical composition、hardness、and microstructure of the hardfacing metal are all satisfied. The life of hardfacing die insert is as long as tool steel insert which was fully heat-treated. More than 25000 workpieces can be carried out by using the hardfacing die insert. The life of repaired cold die with new kind of hardfacing electrode bar can be raised up to （30～50）% than hardfaced with the electrode D322 under the same condition. It has simple technology to .manufacture big die by hardfacing on the base metal of pig iron and repair the destroyed die. The hardfacing technology has much more advances such as little die design work ,short period,low cost and so on. Compared to traditional process,die design work time can be shorten more than 80% ,manufacturing equipment can be deduced more than 70% and high cost metal can be save more than 90%.

关 键 词：堆焊工艺 修边模 镶块 铸铁 经济效益 

分 类 号：TH16[机械工程—机械制造及自动化]