Rolling method based on heated pure nickel plate

Abstract

The invention discloses a rolling method based on a heated pure nickel plate. The rolling method comprises a plate blank preheating stage, a plate blank first-section heating stage, a plate blank second-section heating stage, a plate blank soaking stage, plate blank rough rolling, oxide skin treatment before finish rolling, plate finish rolling, curling and acid pickling annealing. According to the method, the plate blank is heated at a temperature of 150-220 DEG C / min, so that the situation that the nickel plate blank is rapidly heated from the room temperature, internal crystals are changed, and a yield is reduced is avoided; and meanwhile, in a heating process of the first-stage heating, the second-stage heating and the soaking stage, temperature control can be more accurate through control over the temperature of an upper burner and the temperature of a lower burner in a heating process; a high-pressure water descaling system is used for cleaning oxide skin on the surface of a plate blank before finish rolling, the oxide skin is prevented from being pressed into the surface of follow-up strip steel; and meanwhile, the nickel plate is rolled through seven-pass downward pressing and eight finish rolling mills in the rough rolling process, so that the surface of the rolled nickel plate is free of roller marks, high in flatness and good in surface glossiness.

Description

technical field

[0001] The invention belongs to the technical field of hot rolling, in particular to a rolling method based on heating of a pure nickel plate. Background technique

[0002] Because of its excellent corrosion resistance and high strength, pure nickel is widely used in aerospace, chemical industry, electric power, medical and other fields. The production methods of nickel mainly include electrolysis, carbonylation and hydrogen reduction;

[0003] After searching the patent application publication number CN109351771A, a high-purity nickel plate rolling method comprises the following steps: step 1: hot rolling billet opening, step 2: finished product stable rolling, step 3: cutting the edge of the finished warm rolled nickel plate described in step 2 Plate machine trimmed;

[0004] The method has the following deficiencies: 1) If the ambient temperature of the nickel plate is low, the nickel plate is directly hot-rolled and billeted. Because the temperature of t...

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