Cold rolling method for improving structure properties of ferritic stainless steel plate strips and analysis method thereof
A stainless steel plate, microstructure and performance technology, applied in the direction of metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of low microstructure and performance of stainless steel strips, reduce the cost of industrial experiments, reduce the number of simulations, and improve test accuracy Effect
Active Publication Date: 2016-03-23
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0008] Aiming at the problem that the microstructure and properties of the existing cold-rolled ferritic stainless steel strips are not high, the present invention provides a cold rolling method and an analysis method for improving the microstructure and properties of the ferritic stainless steel strips. Through the improvement of the cold rolling process, the improvement The microstructure and properties of ferritic stainless steel strips have been improved, and cold-rolled ferritic stainless steel strips with excellent formability have been obtained
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Embodiment 1
[0052] An analysis method of a cold rolling method for improving the microstructure and properties of ferritic stainless steel strips, comprising the following steps:
[0053] 1) The stress and strain data of the ferritic stainless steel to be cold-rolled in the temperature range from room temperature to 300 °C were collected through the uniaxial compression experiment of the cylinder, and made as follows: figure 1 The stress-strain curve shown, considering that ferritic stainless steel does not undergo dynamic recrystallization in this temperature range, the strain rate of the experiment is taken as 0.1s -1 , in order to prevent damage to the hammer head used in the thermal simulation testing machine, the hammer head was replaced with a nickel-based superalloy;
[0054] 2) Determine the deformation resistance model of ferritic stainless steel according to the temperature, stress and strain data collected in step 1), the specific steps are:
[0055] a) building a database wit...
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The invention discloses a cold rolling method for improving structure properties of ferritic stainless steel plate strips and an analysis method thereof, belongs to the technical field of cold rolling processes, and solves the problem of low structure properties of traditional cold-rolled ferritic stainless steel plate strips. Based on a deformation resistance model of a blank for cold rolling and thermophysical parameters of a material, a finite element analysis model of the plate strip cold rolling process is built according to a actual cold rolling production process; and under the condition of definite total reduction rate, the shear stress and the shear strain distribution in the plate strips under different gate reduction rate distribution systems are analyzed, and a total reduction rate and a reduction rate distribution system for improving the structure properties of the annealed plate strips are determined through calculating the shear strain energy distribution and change rules in the plate strips. The method can accurately analyze the cold rolling process parameters of the ferritic stainless steel annealed plate strips to improve the structure properties of the ferritic stainless steel annealed plate strips so as to obtain the ferritic stainless steel plate strips with excellent formability.
Description
technical field [0001] The invention belongs to the technical field of cold rolling technology, and in particular relates to a cold rolling method and an analysis method for improving the microstructure and properties of ferritic stainless steel strips. Background technique [0002] Cold rolling uses hot-rolled steel coils as raw materials. After pickling to remove scale, continuous cold rolling is carried out. The finished product is hard rolled coils. Due to cold hardening caused by continuous cold deformation, the strength, hardness, and toughness of hard rolled coils increase. The plastic index decreases, so the stamping performance will deteriorate, and it can only be used for parts with simple deformation. The process of cold rolling production generally includes raw material preparation, pickling, rolling, degreasing, annealing (heat treatment), finishing, etc. Cold rolling uses hot-rolled products as raw materials. Before cold rolling, the raw materials must be deph...
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IPC IPC(8): B21B1/22B21B37/00
CPCB21B1/22B21B37/00B21B2001/221
Inventor 隋凤利徐丽霞毕洪运袁昆张立梅
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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