鋁及鋁合金鎢極氬弧焊的焊接工藝參數(shù)

1、鋁及鋁合金鎢極氬弧焊的焊接工藝參數(shù)。鋁及鋁合金手工鎢極氬弧焊和自動鎢極氬弧焊的焊接工藝參數(shù)，分別見表40、41。表40 鋁及鋁合金手工鎢極氬弧焊焊接工藝參數(shù)焊件厚度(mm)焊絲直徑（mm）鎢極直徑（mm）預熱溫度（）焊接電流（A）氬氣流量(L/min)噴嘴孔徑（mm）焊接層數(shù)（正面/反面）備 注11.5234568101214161820162022251.61.62.022.52333444545455656565656562223344555565666666710010015015020018020020022020024020026020026020026040605080901201

2、5018018020018024024028016032028034030036034038034038036040036040030038036040079798128121015101516201620162018222024202425302530253030358881281281210121416141614161620162016201620202216202022正1正1正1正112/112/112/12/134/1234/1234/1245/1245/1245/1223/2334/34卷邊焊卷邊或單面對接焊對接焊Y形坡口對接Y形坡口對接Y形坡口對接Y形坡口對接Y形坡口對接Y形坡

3、口對接Y形坡口對接Y形坡口對接Y形坡口對接Y形坡口對接Y形坡口對接雙V形坡口對接雙V形坡口對接表41 鋁及鋁合金自動鎢極氬弧焊焊接工藝參數(shù)焊件厚度(mm)焊接層數(shù)鎢極直徑（mm）焊絲直徑（mm）噴嘴孔徑（mm）氬氣流量(L/min)焊接電流（A）送線速度(m/h)1234568812111212223231.5234555661.61.6222323334810810101410141216141814185612141418141816201824182412016018022022024024028028032028032030034065706570707570757580808571

4、試述鋁及鋁合金熔化極氬弧焊的焊接工藝參數(shù)。自動及半自動熔化極氬弧焊焊接鋁及鋁合金時的焊接工藝參數(shù)，分別見表42、表43。焊接電源采用直流反接。表42 鋁及鋁合金自動熔化極氬弧焊焊接工藝參數(shù)焊件牌號焊絲牌號焊件厚度(mm)坡口形式坡口尺寸焊絲直徑噴嘴孔徑氬氣流量(L/min)焊接電流(A)電弧電壓(V焊接速度 (m/h)備注鈍邊(mm)坡口角度()間隙(mm)LPSSAiMg552.02228240212242單面焊雙面成形L2L3L2681012141620252830V形V形V形V形V形V形V形雙V形468101216211610010010010010010010010000.500.50

5、10101010101012.52.53.03.04.04.04.04.04.0222228282828282828303530353035303540454045506050605060230260300320310330320340380400380420450500490550560570262726272728282929312931293129312931252428181518172017191315正反面均焊1層LF2LF3LF3LF512182025V形V形V形8141616120120120120010101013.04.04.04.0222828283035506050605060320350450470450700490520283029302