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介绍铜管拉拔机关键部件拉拔卷筒孚用熔化极药芯焊丝气体保护焊堆焊耐磨层的堆焊工艺.堆焊材料选用抗裂性好的PK-YD212焊丝,单层硬度>HRC50.所确定的堆焊工艺可行,工件不预热,熔合区窄,堆焊合金稀释率低.
Describe the key components of copper pipe drawing machine pull roll Fu Fu melting pole flux gas welding layer surfacing wear layer surfacing process. Cracking welding material selection PK-YD212 good crack resistance, single-layer hardness> HRC50. The established surfacing process is feasible, the workpiece is not preheated, the fusion zone is narrow, the depositing alloy dilution rate is low.