There are two kinds of SPA-C wear-resistant plate manufacturing processes: hot-rolled and cold-rolled. Any one of the SPA-C steel plates can be manufactured by these two methods. Therefore, since both can be manufactured, there are still two methods, because they have each other. Disadvantages and advantages, we can pay more attention to the performance of the manufacturing method according to their specific needs. Because the hot rolling process of the SPA-C steel plate is relatively common, let us know the advantages and disadvantages of the hot rolling process of the SPA-C wear-resistant plate.
Advantages of hot rolling of SPA-C wear-resistant plate: It can damage the ingot cast structure, eliminate some minor defects in the structure, refine the steel grain, make the SPA-C steel structure more compact, and improve the overall performance. This improvement is mainly reflected in the rolling direction, so that the SPA-C steel is no longer isotropic to some extent; some defects such as bubbles, cracks and looseness formed during casting can be eliminated under high temperature or high pressure.
Many things follow the principle of thermal expansion and contraction, as well as SPA-C wear-resistant plate. When the weld is processed, the strain induced by local shrinkage can reach several times the yield point, which is much larger than the load. In addition, under great pressure, non-metallic inclusions inside the SPA-C wear-resistant plate, some sulfides or oxides are pressed into thin sheets, and delamination occurs. The delamination greatly deteriorates the tensile properties of the SPA-C steel in the thickness direction, and it is possible to cause interlayer tearing when the weld is shrunk.
Another situation is that if the hot-rolling process of the SPA-C steel plate is used, if the cooling is uneven, residual stress will be caused. The residual stress is the internal self-phase equilibrium stress without external force. Many hot-rolled SPA-C steel plate will encounter this situation. The larger the steel cross-section size, the greater the residual stress. Under normal circumstances, the residual stress can maintain their own balance, but the SPA-C steel plate needs to be treated under external force in many cases, and the balance will be destroyed at this time. Such as deformation, stability, anti-fatigue and other aspects of the operation will cause a bad situation.
If you need the SPA-C wear-resistant plate, please contact us freely. We will offer the more information about SPA-C steel plate for free. We have the large SPA-C steel plate stock every month, so we can shorten the time and supply the high quality SPA-C steel plate for customers.
