銅及銅合金熔化極氬弧焊的焊接工藝

1、銅及銅合金熔化極氬弧焊的焊接工藝。焊絲的選用選用與鎢極氬弧焊相同的焊絲見表46。預(yù)熱及焊后熱處理預(yù)熱溫度與鎢極氬弧焊相同。硅青銅、鈹青銅焊后應(yīng)進(jìn)行退火消除應(yīng)力和500 C、保溫3h的時(shí)效硬化處理。熔滴過渡形式滴狀和短路過渡適合于立焊和仰焊位置的焊接，噴射過渡適用于平焊和橫焊位置的焊接。熔滴 由短路過渡轉(zhuǎn)變?yōu)閲娚溥^渡的焊接工藝參數(shù)，見表49。表49銅合金進(jìn)入噴射過渡的焊接工藝參數(shù)焊絲材料焊絲直徑(mm)最小焊接電流(A)電弧電壓(V)送絲速度(m/min)最小電流密度(A/mm2)磷脫氧銅1.6310263.941680.8180268.75292硅錳脫1.2210256.35203氧銅1.63

2、10263.8216892/8錫青銅1.6270274.181340.8160257.5026093/7鋁青銅1.2210256.602031.6280264.701390.81652410.70268硅青銅1.220526 -277.501991.627027 -284.8213470/30 銅-鎳1.6280264.45139焊接工藝參數(shù)銅及銅合金熔化極氬弧焊的焊接工藝參數(shù)，見表50、表51表50純銅熔化極氬弧焊焊接工藝參數(shù)焊件厚度坡口形式及尺寸焊絲直徑(mm)焊接電流(A)弧壓。 電 電 <氬氣流量(L/min)層數(shù)預(yù)熱溫度(C形式間 隙(mm)鈍 邊(mm)角度(a °

3、)30025163I01.6135030200350251615I1.61001400302027040032166Y031.62250904253420045025206I2.51100248030258Y01702.5460322522502390480353030028025259Y03902.5500303022502802.5480322540010Y0390350035302500802.5550282545012Y0390365032302500雙02803503025235012Y23901.640035304400雙2.55003025215Y0330360035304450

4、12702825220Y238047003030360022Y118047003230260030229075036403表51銅合金熔化極氬弧焊焊接工藝參數(shù)材料焊件厚度(mm)坡 口 形 式焊絲直徑(mm)焊接電流(A)電弧電壓(V)送絲速度(mm/min)氬氣流量(L/min)備注黃銅3I1.627528525 28169Y1.627528525 281612Y1.627528525 2816錫青銅1.5I0.813014025 263I1.014016026 276Y1.016518527 289Y1.627528528 29預(yù)熱100150C12Y1.631533529 30預(yù)熱200

5、250 32252.544046033 34鋁青銅3I1.626030026 28206Y1.62.028032026 284.55.5203005.5209Y1.633026 286.025雙4505010Y4.055032 34253206.03012Y1.638026 286.532雙4003016Y2.544026 28353206.03018Y1.635026 286.535雙4506.54024Y2.550028 307.0452603I1.627027 30163006I1.6265.516硅青320銅9Y1.630027 305.5165.512Y1.6310277.51620雙235027 3016Y2.538020白銅3I1.628022 28166I1.627033022 28169Y1.630033