Broken tooth and spindle wear repair process for single-tooth roller of crusher
A technology of wear repair and breaker, which is applied in the direction of metal material coating process, coating, grain treatment, etc. It can solve the problems of difficulty in controlling the strength of the joint surface, meeting the repair needs, and difficulty, so as to improve welding efficiency and material utilization The effect of improving efficiency, improving cladding welding accuracy and reducing labor intensity
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[0025] 1) Use oxygen cutting to cut at 30mm on both sides of the broken tooth or the worn part of the main shaft. The cutting depth exceeds the depth of the worn surface by 20mm, and the damaged surface is cut into a "U"-shaped groove with a curved bottom surface;
[0026] 2) After cutting, use a grinder to grind until the inner wall and bottom surface of the breach expose the smooth surface of the metal, so as to eliminate the residual high-melting ferric oxide after cutting, which is convenient for laser welding and bonding;
[0027] 3) Using a laser cladding welding machine to laser clap the pearlitic alloy powder material and the nickel-based solder of the acidic coating composition to form a bonding layer on the inner wall and bottom of the breach;
[0028] Binding layer composition (mass percentage):
[0029] C Cr B Si P <0.5 12 0.5-2.0 2.4-4.5 margin
[0030] 4) Using a laser cladding welding machine, the martensitic alloy powder material, the...
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