Substitutional Austenite Stainless Steel Electrode with Low Carbon Steel Core
By the adoption of low carbon steel core (H08E) and covering transition alloy elements, the new type of electrode for stainless steel weld was gained. The high speed photograph of welding process, the composition analysis and microstructure observation of welding seam were carried on the investigated electrode. The results show that the substitutional electrode has high penetration efficiency, excellent arc stability, good fluidity melting slag and electrode root without reddening, covering without peeling, etc. The melting dripping of the investigated electrode in welding transited in spray. Chemical constituent and microstructure of the welding seam metal have reached the requirements of the same kind of chromel alloy welding core stainless steel electrode. The problems such as stainless steel electrode root reddening and crack etc have been settled once and for all. At the same time, the production costs of the electrode have also been reduced significantly.