自动焊(han)(han)(han)焊(han)(han)(han)接和(he)见搏手(shou)工焊(han)(han)(han)接,自动焊(han)(han)(han)一般(ban)采(cai)用(yong)埋弧焊(han)(han)(han)、等(deng)离子焊(han)(han)(han),手(shou)工焊(han)(han)(h蜂篱an)一般(ban)采(cai)用(yong)氩弧焊(han)(han)(han)。
不锈钢焊(han)管的(de)生产(chan)工(gong)艺虽然简单,但同样具有必·备流程。下面火炬就来为您分(f转诊en)析不锈钢焊(han)管工(gong)艺 :
1、河南工业(ye)不锈钢焊接(jie)管在线(xian)光(guang)亮固溶处(chu)理
焊(han)(han)管在生(sheng)(sheng)产(chan)过程中(zhong)(zhong)由(you)于受到滚压、拉伸和焊(han)(han)接(jie)时的高(gao)温(wen)影(ying)响(xiang),材料的组织(zhi)、机(ji)械性能(neng)都会(hui)发(fa)生(sheng)(sheng)变化(hua),严重(zhong)的影(ying)响(xiang)管材的品质(zhi),这(zhei)(zhei)些变化(hua)主要(yao)有(you)(you):冷作硬化(hua)现象(xiang),即(ji)晶体(ti)(ti)中(zhong)(zhong)一列或若于列原子发(fa)生(sheng)(sheng)有(you)(you)规律的错排,晶格(ge)发(fa)生(sheng)(sheng)畸变,形弧秤成一个应(ying)(ying)(ying)力(li)集中(zhong)(zhong)区(qu),这(zhei)(zhei)种(zhong)现象(xiang)也称位错。因为高(gao)温(wen)和冷却不匀(yun)产(chan)生(sheng)(sheng)焊(han)(han)接(jie)应(ying)(ying)(ying)力(li)和在原有(you)(you)单一奥(ao)氏(shi)(shi)体(ti)(ti)组织(zhi)中(zhong)(zhong)产(chan)生(sheng)(sheng)铁素体(ti)(ti),出现碳化(hua)物等不均匀(yun)组织(zhi),为提高(gao)生(sheng)(sheng)产(chan)效率,确保焊(han)(han)管表(biao)面光亮,消(xiao)残余应(ying)(ying)(ying)力(li),获得单一的奥(ao)氏(shi)(shi)体(ti)(ti)组织(zhi),生(sheng)(sheng)产(chan)高(gao)品·质(zhi)焊(han)(han)管, 须实施在线光亮固溶处理方法。
2、不锈钢焊接(jie)管保护气氛的(de)影响
采用液氨(an)(an)分解气(qi)(qi)(qi)体(ti)为(wei)保(bao)护(hu)气(qi)(qi)(qi)氛、液氨(an)(an)在400℃以(yi)(yi)上将发生(sheng)如(ru)下分解反应:2NH3→3H2+N2。氢气(qi)剑按(qi)(qi)为(wei)还原气(qi)(qi)(qi)体(ti),可以(yi)(yi)使(shi)某些金属还原,氮气(qi)(qi)(qi)为(wei)中性气(qi)(qi)(qi)体(ti)。以(yi)(yi)液氨(an)(an)分解气(qi)(qi)(qi)氛为(wei)保(bao)护(hu)气(qi)(qi)(qi)体(ti),不锈(xiu)钢盘管(guan)(guan)可使(shi)焊管(guan)(guan)表面白亮光滑,因而(er)是经济、理想的保(bao)护(hu)气(qi)(qi)(qi)体(ti)。
3、不锈钢(gang)焊接管固溶处(chu)理温度
固溶(rong)(rong)处理(li)温度是固液(ye)处理(li)工(gon旋喊g)艺重要的参数之(zhi)一,过(guo)(guo)高(gao)或(huo)过(guo戚促)(guo)低都将会直接影响焊管(guan)的质量(liang),温度过(guo)(guo)高(gao)焊管(guan)组织(zhi)粗化(hua),性能下降,温度过(guo)(guo)低固溶(rong)(rong)不完,选用1080℃±10℃,并进行适(shi)当(dang)保(bao)温,碳化(hua)物得到(dao)充分(fen)溶(rong)(rong)解。