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交流方波焊鋁的優(yōu)點(diǎn)與缺點(diǎn)
交流方波焊鋁的優(yōu)點(diǎn):
1)可以精確控制對工件的熱輸入和熔池尺寸,提高焊縫抗燒穿和熔池的保護(hù)能力,易獲得均勻的熔深,特別適用薄板(薄至0.1mm)全位置焊接和單面焊雙面成型;
2)每個(gè)焊點(diǎn)加熱和冷卻迅速,焊接過程中熔池金屬冷凝快,高溫停留時(shí)間短,可減小熱敏材料焊接時(shí)產(chǎn)生裂紋的傾向;
3)能量比較集中,有去除氧化膜的清理功能,焊縫光亮平滑美觀,不需要對焊縫清洗,
特別適合空間小的焊接死角焊接,操作方便靈敏。
交流方波焊鋁的缺點(diǎn):
1)焊接速度比自動(dòng)送絲氣體保護(hù)焊機(jī)慢,對焊工焊接手法操作水平要求高;
2)焊縫熔池深度淺,對厚板焊接需要預(yù)熱。
交流方波焊接參數(shù)
1、前氣——提前送氣時(shí)間。Pre-gas flow:Time elapse of gas flow before welding
2、起弧——起弧電流。Arc-start: Min current of start arc
3、緩升——焊接電流的上升時(shí)間。Up-slope: Time elapse of welding current slopes up
4、恒流——恒流輸出狀態(tài)時(shí)的焊接電流。
Constant current: welding current on output constant current
5、清理——焊機(jī)輸出清理電流的時(shí)間比例。Oxide clean ratio: time ratio of output clean current
交流TIG焊接時(shí),可以改變清理寬度及熔深的大小,以獲得最優(yōu)良的焊接效果。While in AC TIG, regulate clean width and penetration to
6、交流偏置——清理電流相對于焊接電流的比例。
AC Bias: Ratio of clean current dividing by welding current.
調(diào)節(jié)此參數(shù),可以調(diào)節(jié)清理電流的大小,從而達(dá)到合理的焊接清理效果。
By adjusting the parameter, as to adjusting clean current result in reasonable oxide clean effect.
建議:在同樣清理的效果下,減小清理比例,增大交流偏置比例,能獲得較大的熔深,提高生產(chǎn)率,延長鎢極壽命。Suggestion: At the same clean effect, reduce clean ratio and increase AC bias to obtain deeper penetration, higher productivity and prolong tungsten electrode lifespan.
7、交流——交流輸出時(shí)的工作頻率。AC frequency: Frequency of output AC
8、峰值——脈沖輸出時(shí)的峰值電流Peak: Peak value of output pulse
9、占空——脈沖輸出時(shí)峰值電流所占的時(shí)間比例??梢钥刂坪缚p溶深,以實(shí)現(xiàn)全位置焊接和薄板焊接Pulse ratio: Time ratio between length of peak value current and length of whole single pulse applied in pulse TIG, can be easily used for controlling penetration in all-position or thin sheet welding.
10、脈沖——脈沖輸出時(shí)的工作頻率。Pulse frequency: Output pulsefrequency
11、基值——脈沖輸出時(shí)的維弧電流。Base current: Arc maintenance current of output pulse
12、衰減——焊接電流的下降時(shí)間。Down –slope: Time of welding current slopes down
13、收弧——焊接熄弧前的電流值。Crater filling: Welding current of crater filling.
14、延氣——焊接結(jié)束后繼續(xù)送氣時(shí)間。Post-gas flow: Time of gas flow after ending welding
交流方波焊鋁工藝規(guī)范
純鋁、鋁鎂合金手工鎢極氬弧焊的焊接工藝參數(shù)(僅供參考)
交流方波焊鋁的注意事項(xiàng)
交流方波應(yīng)用于我司的焊機(jī)機(jī)型:
(WSEM-400P WSEM-300P WSEM-500P WSEM-630P等)圖片如下:
交流方波焊鋁的示例