黄金武士典韦

How to weld stainless steel sheets? The welder has to learn

Characteristics of argon arc welding of stainless steel sheets
(1) The stainless steel sheet has poor thermal conductivity and is easily burned directly.
(2) No welding wire is required for welding, and the base metal is directly fused.
Therefore, the quality of stainless steel sheet welding is closely related to the operator, equipment, materials, construction methods, external environment during welding and testing.
In the welding process of stainless steel sheets, no welding consumables are required, but the following materials are required to be relatively high:
First, the purity, flow rate and argon time of argon gas,
Second, the tungsten electrode, a good tungsten electrode has a crucial impact on the welding results.

如何焊接不銹鋼薄板?焊工不得不學的知識

不銹鋼薄板的氬弧焊焊接特點
(1)不銹鋼薄板的導熱性差,容易直接燒穿。
(2)焊接時不需要焊絲,母材直接熔合。
因此,不銹鋼薄板焊接的質量與操作者、設備、材料、施工方法、焊接時的外部環境及檢測等因素息息相關。
在不銹鋼薄板的焊接過程中,不需要焊材,但是對以下材料要求比較高:
一是,氬氣的純度、流量大小及通氬時間,
二是,鎢極,一根好的鎢極對焊接結果有著至關重要的影響。
(1)氬氣
氬氣的純度必須大于99.99%以上。氬氣主要是對熔池進行有效的保護,在焊接過程中防止空氣對熔池侵蝕而引起氧化,同時對焊縫區域進行有效的空氣隔離,使焊縫區域得到保護,提高焊接性能。
(2)鎢極
鎢極表面要光滑,端部一定要磨尖,且同心度好。這樣焊接時高頻引弧好、電弧穩定性好,熔深深,熔池能保持穩定,焊縫成形好,焊接質量好。如果鎢極表面燒壞或表面有污染物、裂紋、縮孔等缺陷時,這樣焊接時高頻引弧困難,電弧不穩定,電弧有漂移現象,熔池分散,表面擴大,熔深淺,焊縫成形差,焊接質量差。
結論
(1)鎢極氬弧焊穩定性好,不同鎢極形狀對不銹鋼薄板焊接質量有較大影響。
(2)平頂錐端頭鎢極焊接可提高單面焊雙面成形率,減小焊接熱影響區,焊縫成形美觀,綜合力學性能較好。
(3)采用正確的焊接方法可有效預防焊接缺陷。

 

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