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Method for preparing high-strength and high-plasticity 316L stainless steel through large-strain warm rolling

A stainless steel, high-strength technology, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of unfavorable promotion and production, and achieve the effects of continuous production, easy processing and low production cost

Pending Publication Date: 2022-04-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology and solve the existing problems in the way of plastic deformation of austenitic stainless steel to improve the strength of the prior art, which is not conducive to popularization and production, a large-strain warm rolling method proposed by the present invention Method for preparing high-strength and high-plasticity 316L stainless steel

Method used

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  • Method for preparing high-strength and high-plasticity 316L stainless steel through large-strain warm rolling
  • Method for preparing high-strength and high-plasticity 316L stainless steel through large-strain warm rolling
  • Method for preparing high-strength and high-plasticity 316L stainless steel through large-strain warm rolling

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Embodiment 1

[0035] Such as Figure 1 to Figure 9 As shown, a kind of large-strain warm rolling of the present invention prepares the method for high-strength high-plasticity 316L stainless steel, and this method comprises the following steps:

[0036] S1: Prepare 316L stainless steel plate and heat it;

[0037] S2: annealing the 316L stainless steel plate after heating and heat preservation to obtain an annealed 316L stainless steel plate;

[0038] S3: Warm rolling the annealed 316L stainless steel sheet to obtain a unidirectional austenitic structure 316L stainless steel sheet;

[0039] S4: Warm rolling is repeated several times to obtain a high-strength and high-ductility 316L austenitic stainless steel plate, which is collected on a tray mechanism by a conveyor belt.

[0040] As an embodiment of the present invention, in S3, before warm rolling, the 316L stainless steel plate needs to be placed in a heating furnace at 300°C for 10 minutes; during the warm rolling process, the anneale...

Embodiment approach

[0042] As an embodiment of the present invention, in the S1, the mass percentages of the components of the 316 stainless steel plate are: C: 0.03, Si: 1.0, Mn: 2.0, p: 0.045, S: 0.03, Ni: 10.0, Cr: 16.0, Mo: 2.0, and the rest are Fe and unavoidable impurities.

[0043] In this embodiment, the 316L stainless steel plate obtained by the above method has a yield strength of 887 MPa, a tensile strength of 984 MPa, and a uniform elongation of 5.7%.

[0044] As an embodiment of the present invention, the tray mechanism is composed of a tray body 3, a movable plate 32, a buffer assembly and a connecting bracket 33; the movable plate 32 is hinged at one end of the top surface of the tray body 3; the buffer assembly is provided with Between the movable plate 32 and the tray body 3; the connecting bracket 33 is movably connected to one end of the tray body 3;

[0045] Described buffer assembly is made up of hinged rod 36, straight rod 362, No. 1 spring 363 and elastic plate 35; One end o...

Embodiment 2

[0056] Such as Figure 1 to Figure 9 As shown, a kind of large-strain warm rolling of the present invention prepares the method for high-strength high-plasticity 316L stainless steel, and this method comprises the following steps:

[0057] S1: Prepare 316L stainless steel plate and heat it;

[0058] S2: annealing the 316L stainless steel plate after heating and heat preservation to obtain an annealed 316L stainless steel plate;

[0059] S3: Warm rolling the annealed 316L stainless steel sheet to obtain a unidirectional austenitic structure 316L stainless steel sheet;

[0060] S4: Warm rolling is repeated several times to obtain a high-strength and high-ductility 316L austenitic stainless steel plate, which is collected on a tray mechanism by a conveyor belt.

[0061] As an embodiment of the present invention, in S3, before warm rolling, the 316L stainless steel plate needs to be placed in a heating furnace at 300°C for 10 minutes; during the warm rolling process, the anneale...

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Abstract

The invention belongs to the technical field of material preparation, and particularly relates to a method for preparing high-strength and high-plasticity 316L stainless steel through large-strain temperature rolling, which comprises the following steps: preparing a 316L stainless steel plate, and heating the 316L stainless steel plate; annealing the heated and insulated 316L stainless steel plate to obtain an annealed 316L stainless steel plate; the annealed 316L stainless steel plate is subjected to warm rolling, and the 316L stainless steel plate of the one-way austenite structure is manufactured; the warm rolling is repeated for multiple times to prepare the high-strength and high-plasticity 316L austenitic stainless steel plate, and the high-strength and high-plasticity 316L austenitic stainless steel plate is collected on a tray mechanism through a conveying belt; by using the warm rolling process, compared with room temperature rolling, the rolling force required by the rolling process is smaller, the strength of the obtained material is equivalent to that of a room temperature rolled material, the processing is easier, the rolling process only depends on conventional rolling equipment, the operation process is simple, continuous production is facilitated, the production cycle time is short, and the production cost is low. The production efficiency is high and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a method for preparing high-strength and high-plasticity 316L stainless steel by large-strain warm rolling. Background technique [0002] 316L stainless steel is an austenitic stainless steel with excellent performance. Due to its remarkable seawater corrosion resistance, intergranular corrosion resistance, high temperature mechanical properties and good weldability, it is widely used in marine, chemical, food, medical, construction, nuclear industry and other fields, specifically as Ship parts, chemical storage equipment, sewage treatment equipment, fertilizer production equipment, medical materials, building components, food industry equipment, heat exchangers for papermaking, high-temperature bolt manufacturing, etc. [0003] Austenitic stainless steel generally uses plastic deformation to improve its strength, and rolling is one of the most commonly used methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B3/02B21B1/26B21B39/04F16F15/067F16F15/073
CPCY02P10/20
Inventor 赖庆全陈子轩
Owner NANJING UNIV OF SCI & TECH
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