Stabilizing Roll for galvanizing line by Qingdao Hexin Machinery Co.,Ltd.
Analysis of Failure Causes of Surfacing Materials for Composite Remanufactured Sink Rolls The influencing factors and laws of the mechanical properties of surfacing deposited metal were analyzed. Firstly, the reasons for the failure of the surfacing materials for sink rolls are analyzed. It is considered that the surfacing metal has poor strength and plasticity, coarse columnar crystals, high inclusion content and high residual austenite content in the microstructure. It has a greater impact on surface cracks and spalling of sink rolls. Based on the Cr5 surfacing alloy system, the effects of V and Mo alloy contents on high temperature tensile, thermal fatigue properties, high temperature wear properties, impact toughness and hardness at room temperature were studied by single variable method. Through the analysis of the microstructure of the cladding metal, the relationship between the change of the microstructure and the mechanical properties is discussed, and the finally optimi...