一重技术
一重技術
일중기술
CFHI TECHNOLOGY
2013年
5期
38-42
,共5页
大型支承辊%工艺参数%焊缝尺寸%堆焊层%热影响区
大型支承輥%工藝參數%銲縫呎吋%堆銲層%熱影響區
대형지승곤%공예삼수%한봉척촌%퇴한층%열영향구
large backup roll%welding parameters%welding size%overlay welded layer%heat affected zone
采用埋弧堆焊的方法对磨损支承辊的工作表面进行修复，能够实现支承辊的循环利用，延长其使用寿命，减少资源浪费。然而，大型支承辊堆焊修复的难度大、要求高，相应的焊接工艺并不成熟。为此，通过研究堆焊工艺参数与焊缝尺寸、稀释率之间的关系，结合显微组织观察和硬度测量，分析堆焊工艺参数对热影响区显微组织和性能的影响，为大型支承辊堆焊工艺的选择与优化提供有益指导。
採用埋弧堆銲的方法對磨損支承輥的工作錶麵進行脩複，能夠實現支承輥的循環利用，延長其使用壽命，減少資源浪費。然而，大型支承輥堆銲脩複的難度大、要求高，相應的銲接工藝併不成熟。為此，通過研究堆銲工藝參數與銲縫呎吋、稀釋率之間的關繫，結閤顯微組織觀察和硬度測量，分析堆銲工藝參數對熱影響區顯微組織和性能的影響，為大型支承輥堆銲工藝的選擇與優化提供有益指導。
채용매호퇴한적방법대마손지승곤적공작표면진행수복，능구실현지승곤적순배이용，연장기사용수명，감소자원낭비。연이，대형지승곤퇴한수복적난도대、요구고，상응적한접공예병불성숙。위차，통과연구퇴한공예삼수여한봉척촌、희석솔지간적관계，결합현미조직관찰화경도측량，분석퇴한공예삼수대열영향구현미조직화성능적영향，위대형지승곤퇴한공예적선택여우화제공유익지도。
The worn roll surfaces can be repaired by submerged arc welding technology so as to re-use backup roll and improve its service lifetime and to save resources. However, the welding technology is still immature due to the difficulties and high demands on the repair welding of large backup roll. Combing with microscopic structure observation and hardness measurement, the paper presents the analysis of the welding parameters’ effects on microscopic structure and property of heat affected zone, through study of the relationship between welding parameters and welding size, dilution ration. This will provide beneficial instruct on the choice and optimization of backup roll overlay welding procedure.
