Rolling process of ultra-thin Fe-Cr-Al alloy steel strip

Abstract

The invention relates to a rolling production process of ultra-thin iron-chromium-aluminum alloy strip steel. The rolling production process comprises the steps that 1) material selecting is carried out, wherein an iron-chromium-aluminum alloy coiled material with the thickness being 1.0 mm-0.5 mm and the width being 550 mm-650 mm is selected as a raw material; 2) intermediate rolling is carried out, wherein design is made according to 1 to 3 rolling processes, the total deformation of each rolling process is controlled to be 50% to 80%, the first-pass deformation of each rolling process is controlled to be 18% to 23%, the second-pass deformation is controlled to be 26%-30%, and the deformation of the other passes is successively reduced; 3) intermediate annealing is carried out, wherein a vertical furnace is adopted for continuous annealing, the furnace temperature is controlled to be 800 DEG C-880 DEG C, and fast cooling is carried out; 4) finished product rolling is carried out, wherein the first-pass deformation is controlled to be not less than 30%, and the deformation of the other passes is successively reduced; 5) finished annealing is carried out, wherein the vertical furnace is adopted for continuous annealing, and the furnace temperature is controlled to be 780 DEG C-850 DEG C; and 6) plate shape correction is carried out, wherein plate shape correction is carried out according to the pull correction rolling reduction being 3.0 mm to 4.0 mm and the elongation being 0.3% to 0.7%. The process makes the product thickness tolerance fluctuation small, the plate shape flatness is good, and the surface quality is stable.

Description

technical field [0001] The present invention generally relates to the technical field of steel rolling. More specifically, it relates to a rolling production process of an ultra-thin iron-chromium-aluminum alloy steel strip. Background technique [0002] FeCrAl alloy materials, such as 0Cr21Al6, 1Cr13Al4 and other typical steel types, due to their high resistivity and high temperature resistance, are currently mainly used as metal carriers for three-way catalytic converters of motorcycles and automobiles; industrial furnaces, household appliances, water heaters Electric heating elements such as; Diesel particulate filter devices; Heating components in the food and pharmaceutical industries. The thickness of three-way catalytic converter and electric heating film material is usually 0.06mm, 0.08mm, 0.1mm. As the market pays more and more attention to green, environmental protection and conservation, the development of ultra-thin iron-chromium-aluminum alloy steel strip prod...

AI Technical Summary

Problems solved by technology

[0003] However, the production of ultra-thin iron-chromium-aluminum alloy strip steel needs to solve quality problems such as plate shape, surface roughness, and color consistency, and also needs to solve the problems of brittle fracture, sticking rolls, low production efficiency, and high cost in production