1. 減壓器


  減(jian)壓(ya)器又稱壓(ya)力調節器，其作用是(shi)把儲存在氣(qi)(qi)瓶內的高(gao)壓(ya)氣(qi)(qi)體(ti)減(jian)壓(ya)至焊接或切割所需的壓(ya)力，并保持壓(ya)力穩(wen)定。國產(chan)幾種常用氣(qi)(qi)體(ti)減(jian)壓(ya)器型號及技術參數見表2-37。


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2. 流量(liang)計、氣(qi)體配比器


  流(liu)量的大小將對焊接接頭質(zhi)量有很大影響(xiang)，轉(zhuan)子流(liu)量計是氣體保(bao)護焊中調節保(bao)護氣本流(liu)量的一種(zhong)儀(yi)器(qi)。對于(yu)混合氣體保(bao)護焊還需氣體配比器(qi)，來控(kong)制不同氣體流(liu)量的裝置(zhi)。


  有關轉子流量計和氣體配(pei)比(bi)器的型號及技術(shu)數據(ju)見表2-38和表2-39。


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3. 手工鎢(wu)極(ji)氬弧(hu)焊(han)焊(han)槍


  手工(gong)鎢極(ji)(ji)氬弧焊(han)(han)(han)(han)(han)(han)(han)焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)是(shi)手工(gong)氣(qi)體保(bao)護焊(han)(han)(han)(han)(han)(han)(han)在(zai)使(shi)用過(guo)程(cheng)中(zhong)(zhong)不(bu)可缺少的(de)一種(zhong)工(gong)具。它除了(le)具有焊(han)(han)(han)(han)(han)(han)(han)條電弧焊(han)(han)(han)(han)(han)(han)(han)用焊(han)(han)(han)(han)(han)(han)(han)鉗的(de)性能外，還(huan)要求焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)輕便、靈活，便于焊(han)(han)(han)(han)(han)(han)(han)工(gong)在(zai)不(bu)同位(wei)置(zhi)長時間不(bu)間斷地(di)工(gong)作，以(yi)及具有良(liang)好(hao)的(de)絕緣性，保(bao)證(zheng)使(shi)用者安全。手工(gong)鎢極(ji)(ji)氬弧焊(han)(han)(han)(han)(han)(han)(han)焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)通(tong)(tong)常有兩種(zhong)：一種(zhong)是(shi)氣(qi)冷(leng)(leng)(leng)式(shi)(shi)，另(ling)一種(zhong)是(shi)水冷(leng)(leng)(leng)式(shi)(shi)。對于水冷(leng)(leng)(leng)式(shi)(shi)焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)要保(bao)證(zheng)水流暢(chang)通(tong)(tong)，不(bu)能有堵(du)塞和滲漏現象，不(bu)然在(zai)施焊(han)(han)(han)(han)(han)(han)(han)過(guo)程(cheng)中(zhong)(zhong)突然中(zhong)(zhong)斷除會(hui)影(ying)響正常施工(gong)外，還(huan)會(hui)對焊(han)(han)(han)(han)(han)(han)(han)接(jie)(jie)質(zhi)量(liang)造成極(ji)(ji)大的(de)影(ying)響。氣(qi)冷(leng)(leng)(leng)式(shi)(shi)焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)的(de)氣(qi)管同樣(yang)要保(bao)持氣(qi)流暢(chang)通(tong)(tong)，特別是(shi)新焊(han)(han)(han)(han)(han)(han)(han)槍(qiang)(qiang)(qiang)(qiang)使(shi)用前，要將氣(qi)管中(zhong)(zhong)殘留多余物(wu)吹除干凈(jing)，這(zhe)樣(yang)才能保(bao)證(zheng)輸送氣(qi)體的(de)純(chun)度，不(bu)然將會(hui)直接(jie)(jie)影(ying)響焊(han)(han)(han)(han)(han)(han)(han)接(jie)(jie)接(jie)(jie)頭(tou)質(zhi)量(liang)。


  常用的氣(qi)冷式和水冷式焊槍型號和技術數(shu)據見表(biao)2-40。


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  表2-40常用(yong)的氣冷式和水冷式焊槍型號和技(ji)術數據