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Cause of tungsten carbide ring rolls failure

Cause of tungsten carbide ring rolls failure:During the rolling process, the hot-rolled part is in contact with the surface of the groove, which is because the surface temperature of the roll is less increased, and compressive stress is generated on the surface temperature of the roll; on the contrary, when the surface layer of the roll is quenched by the cooling water, the surface metal shrinks, and The deep metal shrinkage is not as large as the surface metal, which will produce a tensile stress on the surface metal. This repeated alternating thermal stress is prone to thermal fatigue cracks, resulting in nail-like microcracks and cracks at the bottom of the groove.


As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

LMM Main product series

Core technology products:

  • magnesia carbon brick
  • slide gate plate
  • graphite electrode

Core technology products:

  • Hss roller
  • cast steel rolls
  • tungten carbide ring roller

Core technology products:

  • copper mould tube
  • copper mould plate
  • assembly & cooling jackts

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