Talking about the causes of wrinkles and delamination of stainless steel clad plate during steel rolling

1) After the stainless steel raw materials (stainless steel and carbon steel) are transported to the clad plate factory, a blank assembly is required during the production process. The stainless steel is not straightened during the blank assembly process. During the high temperature rolling process, the stainless steel solution flows and causes wrinkles on the surface;

2) In the billet assembly, the edge of the stainless steel and the billet iron bar is too tight, causing the stainless steel to produce a slight bulge in the middle, so that the stainless steel solution flows during the high-temperature rolling process, thereby causing wrinkles;

3) It may be that the carbon steel layer is thin and the heating time in the furnace is too long, causing the temperature to exceed the melting point of the stainless steel layer, resulting in active fluidity of the stainless steel, resulting in wrinkles;

4) The manual polishing of stainless steel is uneven and uneven, resulting in an uneven thickness of stainless steel during rolling in a high-temperature furnace (the middle thickness is thin on both sides), and it spreads to both sides during the rolling process, and the isolating agent will not make it merge with each other. This produces wrinkles.

5) The material of the stainless steel raw material is incorrect, which causes the compression ratio to be inconsistent with the actual production compression ratio.

Note: Why does this fold only exist in the first layer of the stainless steel layer?

  1. I analyzed that because the second layer of stainless steel in the billet was laminated by the first layer, and the upper and lower spaces in the billet were almost intact, it was only enough for the first layer of stainless steel to deform, not enough to leave space for the second layer. Uplift or deformation of the two-layer stainless steel;
  2. It is also possible that the size of the second layer of stainless steel is exactly the same as the billet, and there is no deformation caused by extrusion.
  3. Because the second layer of stainless steel does not have a release agent, even if wrinkles are generated, they will be flattened by the roller and merge with each other.

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