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Stainless steel plate for mineral screen piece and manufacturing method thereof

A manufacturing method and stainless steel technology, applied in the field of stainless steel plate preparation, can solve the problems of high price, poor strength and wear resistance, etc.

Inactive Publication Date: 2021-01-15
鞍钢联众(广州)不锈钢有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, only a few enterprises are developing stainless steel sieves. The stainless steel materials mainly used are 304 and 316 austenitic stainless steel. Although they have strong corrosion resistance, their strength and wear resistance are poor, and they are expensive.

Method used

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  • Stainless steel plate for mineral screen piece and manufacturing method thereof
  • Stainless steel plate for mineral screen piece and manufacturing method thereof
  • Stainless steel plate for mineral screen piece and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, as shown in Fig. 1 (a), the method for manufacturing this mine sieve sheet with stainless steel plate, comprises steps as follows:

[0025] (1) Steelmaking and continuous casting includes electric arc furnaces, converters, vacuum refining furnaces and billet continuous casting machines. Refining includes argon oxygen decarburization and ladle refining, and the temperature after ladle refining is about 1500°C;

[0026] (2) In continuous hot rolling, the strip width is 800mm, the strip thickness is 2mm, the rolling pass is 10 times, the heating furnace has ten sections, the temperature is between 1050-1250°C, and the furnace temperature is about 1200°C.

[0027] (3) During pickling of hot-rolled strip steel, the steel plate passes through a rust crusher and a sandblasting machine in sequence to ensure a good shape, and then pre-washed with water. The temperature of the steel strip in the pickling zone is 1120°C, and the concentration in the sulfuric acid zon...

Embodiment 2

[0031] Embodiment 2, as shown in Fig. 1 (b), the method for manufacturing this mine sieve sheet with stainless steel plate, comprises steps as follows:

[0032] (1) Steelmaking and continuous casting includes electric arc furnaces, converters, vacuum refining furnaces and billet continuous casting machines. Refining includes argon oxygen decarburization and ladle refining, and the temperature after ladle refining is about 1500°C;

[0033] (2) In continuous hot rolling, the strip width is 800mm, the strip thickness is 2mm, the rolling pass is 10 times, the heating furnace has ten sections, the temperature is between 1050-1250°C, and the furnace temperature is about 1200°C.

[0034] (3) During pickling of hot-rolled strip steel, the steel plate passes through a rust crusher and a sandblasting machine in sequence to ensure a good shape, and then pre-washed with water. The temperature of the steel strip in the pickling zone is 1120°C, and the concentration in the sulfuric acid zon...

Embodiment 3

[0037] Embodiment 3, as shown in Fig. 1 (c), the method for manufacturing this mine sieve sheet with stainless steel plate, comprises steps as follows:

[0038] (1) Steelmaking and continuous casting includes electric arc furnaces, converters, vacuum refining furnaces and billet continuous casting machines. Refining includes argon oxygen decarburization and ladle refining, and the temperature after ladle refining is about 1500°C;

[0039] (2) In hot continuous rolling, the strip width is 1000mm, the strip thickness is 4mm, the rolling pass is 8 times, the heating furnace has ten sections, the temperature is between 1050-1250°C, and the furnace temperature is about 1150°C.

[0040] (3) During the pickling of hot-rolled strip steel, the steel plate passes through a rust crusher and a sandblasting machine in sequence to ensure a good shape, and then pre-washed. The temperature of the steel strip in the pickling zone is 1150°C, and the concentration in the sulfuric acid zone is 20...

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Abstract

The invention provides a stainless steel plate for a mineral screen piece and a manufacturing method thereof, and belongs to the technical field of metal processing. The stainless steel plate is 204C2in grade and is composed of the following alloy elements in percentage by weight: 0.010-0.020% of C, less than or equal to 2.00% of Si, 6.00-10.00% of Mn, less than or equal to 0.100% of P, less thanor equal to 0.050% of S, 16.00-18.00% of Cr, 1.0-3.0% of Ni, 1.0-2.0% of Cu, less than or equal to 0.3% of N, and the balance of iron and inevitable impurities. When the stainless steel plate is produced, the production line process comprises steelmaking continuous casting, hot rolling, hot rolling annealing acid pickling, cold rolling, cold rolling annealing acid pickling, coiling, packaging anddelivery. The stainless steel plate for the mineral screen piece is smooth and bright in surface, free of appearance defects, high in strength, excellent in shaping, easy to machine and form and resistant to corrosion; and according to the mechanical properties, the tensile strength is greater than or equal to 515 MPa, the yield strength is greater than or equal to 205 MPa, the elongation rate isgreater than or equal to 35%, and the hardness HV is less than or equal to 250.

Description

technical field [0001] The invention relates to the technical field of stainless steel plate preparation, in particular to a stainless steel plate for mine screens and a manufacturing method thereof. Background technique [0002] Stainless steel sieves are widely used in mining, coal, petroleum, fertilizer, grain, salt, environmental protection and other industries to screen liquid, powder and other materials. At present, mines sieve ore powder, mainly using stainless steel screen mesh, which has a porosity of 30%, a large effective screen area, is not easy to block holes, and has a fast screening speed and a high yield. However, compared with the stainless steel screen, the screen has poorer firmness, impact resistance and wear resistance, short life, easy deformation, and the mesh size cannot be accurately controlled after deformation. During use, the screen often breaks, breaks, and corrodes. Quality problems, in addition to replacing the screen seriously affected the pr...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/58C22C38/42C22C38/34C21D8/02C25F1/06C23G1/08
CPCC21D8/0226C21D8/0236C22C38/001C22C38/02C22C38/34C22C38/42C22C38/58C23G1/081C23G1/086C25F1/06
Inventor 徐向东宋仁伯王天一文健全书仪苏阳
Owner 鞍钢联众(广州)不锈钢有限公司
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