A kind of 304 stainless steel with pattern and rolling method thereof

Abstract

The invention discloses a rolling method of 304 stainless steel with patterns. The weight percentage of chemical composition is: C≤0.064%, Mn≤0.70%, Ni≤8.0%, N≤0.055%, Si≤0.40%, Cr≤18 %, Cu ≤ 0.045%, P ≤ 0.036%, S ≤ 0.006%, Mo ≤ 1.0%, and the balance is Fe element and unavoidable impurities; the process steps are as follows: 1) Prepare the raw material slab of the above components to the heating furnace Heating; 2) rough rolling: the heated steel ingot is sent to the rough rolling mill through the transfer roller; 3) finishing rolling: the steel plate is transported into the finishing rolling mechanism; 4) coiling: after finishing rolling, it is sent to the coiling mechanism for coiling; 5) Uncoiling welding: welding and fixing the adjacent two groups of steel plates by welding mechanism; 6) Annealing: annealing the stainless steel plate by annealing mechanism; 7) Phosphorus breaking shot blasting; 8) Pickling: 9) Drying. The preparation process provided by the invention is simple and reliable, low in cost, energy-saving and environment-friendly, and the prepared 304 stainless steel has high strength and plasticity.

Description

technical field [0001] The invention belongs to the technical field of stainless steel rolling, in particular to a rolling method of 304 stainless steel with patterns. Background technique [0002] At present, the rough rolling mechanism used in the rolling process of the patterned 304 stainless steel plate is equipped with upper and lower corresponding work rolls and support rolls, and the steel billets are rough rolled by the work rolls; [0003] 1) During the rough rolling process, the surface of the work rolls will stick to scale and other debris to make the surface uneven, and the surface of the work rolls must be cleaned and polished regularly; the existing work rolls need to be disassembled and replaced as a whole, and special large-scale cleaning is required The equipment is specially cleaned, and the back-and-forth hoisting and transportation of the work rolls not only increases the workload, but also poses serious safety hazards; [0004] 2) The heating time of th...

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Problems solved by technology

[0003] 1) During the rough rolling process, the surface of the work rolls will stick to scale and other debris to make the surface uneven, and the surface of the work rolls must be cleaned and polished regularly; the existing work rolls need to be disassembled and replaced as a whole, and special large-scale cleaning is required The equipment is specially cleaned, and the back-and-forth hoisting and transportation of the work rolls not only increases the workload, but also poses serious safety hazards;

[0004] 2) The heating time of the existing stainless steel hot rolling is too long during the rolling process, the high temperature heating section lasts for a long time, and the energy consumption is relatively large, so that the rolling cost is maintained at a relatively high use state;

[0005] 3) In order to improve the corrosion resistance of stainless steel, a small amount of Mo element will be added, but too high Mo element will be harmful to the stress corrosion resistance of austenitic stainless steel; so it is necessary to determine an appropriate range of Mo element addition

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