超大型不銹(xiu)鋼通(tong)風(feng)管道焊接
注:以上(shang)標價僅為(wei)發布產(chan)品信息需要,不作為(wei)實際產(chan)品價格。
不銹鋼通風管(guan)道(dao)焊(han)(han)(han)接時(shi),一般多使用(yong)氮弧焊(han)(han)(han)或電(dian)焊(han)(han)(han),并應采用(yong)與(yu)母材(cai)材(cai)質(zhi)相(xiang)匹配的焊(han)(han)(han)絲(si)。采用(yong)氬弧焊(han)(han)(han),加熱集中,熱量影響區域小,產生局部變形小,且氬氣是保(bao)護(hu)氣體,焊(han)(han)(han)接質(zhi)量比較高。采用(yong)電(dian)弧焊(han)(han)(han)作業時(shi),要在焊(han)(han)(han)縫兩側表面涂(tu)白堊(e)粉,防止(zhi)焊(han)(han)(han)渣和飛(fei)濺物粘附在表面上(shang),焊(han)(han)(han)接完后(hou),要清除焊(han)(han)(han)渣和飛(fei)濺物,并用(yong)10%酸溶(rong)液進行酸洗處理,然后(hou)再(zai)用(yong)清水沖洗干凈(jing)。
加工制(zhi)作不銹(xiu)(xiu)鋼(gang)通風(feng)管(guan)道(dao)的(de)場地(di),要鋪(pu)木板(ban)或橡(xiang)膠板(ban),并把板(ban)上(shang)的(de)鐵屑(xie)、銹(xiu)(xiu)跡和雜物等打(da)掃干(gan)凈。下料劃(hua)線(xian)時(shi),不能用(yong)鋒利的(de)金屬劃(hua)針在其(qi)表(biao)面(mian)(mian)劃(hua)線(xian)或沖眼,應(ying)使(shi)用(yong)做好的(de)樣板(ban)進行(xing)套裁,以免損壞不銹(xiu)(xiu)鋼(gang)表(biao)面(mian)(mian)。剪切不銹(xiu)(xiu)鋼(gang)板(ban)時(shi),不要使(shi)設備超(chao)載工作,要認真調整好上(shang)、下刀刃的(de)間隙,通常此間隙為板(ban)材厚(hou)度的(de)0.04倍。
加(jia)工(gong)制作不(bu)銹鋼通(tong)風管道時(shi),當板厚小(xiao)于(yu)I mm時(shi),應(ying)(ying)采(cai)用(yong)(yong)(yong)(yong)咬口(kou)連接(jie),且咬口(kou)寬度應(ying)(ying)比普(pu)通(tong)鋼板寬一些,一般為12-14mm,并用(yong)(yong)(yong)(yong)不(bu)銹鋼鉚釘鉚接(jie)法(fa)蘭。板厚大于(yu)1mm時(shi),宜采(cai)用(yong)(yong)(yong)(yong)焊(han)(han)接(jie),不(bu)得采(cai)用(yong)(yong)(yong)(yong)氣焊(han)(han)。手工(gong)咬口(kou)時(shi),用(yong)(yong)(yong)(yong)木制、不(bu)銹鋼或銅制的工(gong)具,不(bu)要(yao)用(yong)(yong)(yong)(yong)普(pu)通(tong)鋼制工(gong)具。用(yong)(yong)(yong)(yong)機(ji)械加(jia)工(gong)時(shi),要(yao)清(qing)除機(ji)臺上的鐵(tie)屑、鐵(tie)銹及(ji)雜(za)物。咬口(kou)應(ying)(ying)一次(ci)完成,如進行多(duo)次(ci),則會造成加(jia)工(gong)困難,且易出現破(po)裂現象。


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