Recommended welding materials for shield tunneling cutting tools

The following are some common recommended welding materials for shield tunneling tools:

KB600 wear-resistant welding wire: Chromium molybdenum tungsten series overlay welding wire, specially designed for overlay welding of cutting tools for subway shield tunneling construction. Its matrix is made of nickel alloy, which not only has high temperature resistance (950 ℃), but also has a small tendency to crack, and has good impact resistance and wear resistance. The surface of the weld seam is aesthetically formed, free of slag, and has a single layer hardness of HRC ≥ 60.

UTP A DUR 600 wear-resistant welding wire: used for surface overlay welding, with good impact resistance and wear resistance. It is usually used to bear high impact and moderate wear components, and can be used for shield construction tool edge overlay welding.

YD212 welding rod: CrMo type overlay welding rod with titanium calcium coating, can be used for both AC and DC. During welding, the arc is stable and slag removal is easy.

YD628 welding rod: High carbon, high chromium cast iron overlay welding rod with graphite coating for anti abrasive wear. The overlay layer is made of high carbon and high chromium cast iron dispersed carbides, with high hardness and good heat resistance.

When selecting welding materials for shield tunneling tools, it is necessary to comprehensively consider factors such as welding process, hardness, wear resistance, and high temperature resistance, and choose according to specific usage requirements and working conditions. Meanwhile, it is recommended to refer to relevant welding standards and specifications, and consult professional welding engineers or technicians to ensure welding quality and tool life.