THE DEVELOPMENT OF COLD WELDING SURFACING ELECTRODE FOR BLAST FURNACE VALVE

The Authors of this Article have done research on the cracking resistance of cold welding surfacing electrodes for blast furnace valves by adjusting the basicity of slag component, decreasing the hydrogen content and improving microstructure. The DF 2 Cold Welding Surfacing Electrodes prove to possess the following characters: 1) Excellent cracking resistance for surfacing alloys at normal temperature. 2) Excellent cracking resistance for repair welding and rewelding. 3) Excellent machinability for surfacing alloying.

冷轧辊局部冷焊焊条的设计及其熔敷金属分析

根据冷轧辊的可焊性及工况，设计专用局部冷焊焊条ＧＴ－５５和ＧＴＦ－５５。采用高密度弥散初生碳化物为强化质点，并配以板条马氏体（ＭＬ）和薄膜状残余奥氏体（ＡＲ）为基体组织，使焊缝具有高硬度兼高抗裂性，满足了冷轧工作辊局部冷焊要求。

高强韧模具修复用堆焊焊条的研制

根据冲裁模具的工作条件和失效形式 ,设计出一种专用的局部修复用堆焊焊条 ,使焊缝具有高硬度和高抗裂性 ,满足冲裁模具局部修复用冷焊要求。