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Stainless steel composite plate strip online annealing method

A composite strip and stainless steel technology, applied in the direction of furnace type, furnace, heat treatment furnace, etc., can solve the problems such as the shortcomings of stainless steel plate and carbon steel plate annealing that have not been considered

Inactive Publication Date: 2020-02-14
OKUMTEC TECH WENZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcoming that the production of stainless steel clad strips in the prior art does not take into account the annealing of stainless steel plates and carbon steel plates in the production process, and propose an online annealing method for stainless steel clad strips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An on-line annealing method for a stainless steel clad strip, comprising the following steps:

[0029] S1: Cut out plates with a width of 1200 mm and a thickness of 0.3 mm from stainless steel plates and carbon steel plates, and cut out the plates in advance to avoid heating the entire plate, which can facilitate subsequent processing procedures;

[0030] S2: Put the stainless steel plate in S1 into the annealing furnace and heat it to 850°C at a heating rate of 150°C / h, keep it warm for 4h, and then lower it to room temperature in the furnace at a rate of 60°C / h. Incomplete annealing can improve the processing performance of stainless steel and remove internal stress in stainless steel;

[0031] S3: Put the carbon steel block in S1 into the annealing furnace and heat it to 650 °C at a heating rate of 180 °C / h, keep it for 3 hours, and then lower it to room temperature in the furnace, and perform preliminary incomplete annealing on the carbon steel plate to improve Pro...

Embodiment 2

[0046] An on-line annealing method for a stainless steel clad strip, comprising the following steps:

[0047] S1: Cut out plates with a width of 1400mm and a thickness of 1.2mm from stainless steel plates and carbon steel plates;

[0048] S2: Put the stainless steel plate in S1 into the annealing furnace and heat it to 875°C at a heating rate of 165°C / h, keep it warm for 4-5h, and then lower it to room temperature at a rate of 75°C / h in the furnace. Preliminary incomplete annealing can improve the processing performance of stainless steel and remove internal stress in stainless steel;

[0049] S3: Put the carbon steel plate in S1 into the annealing furnace and heat it to 675°C at a heating rate of 200°C / h, keep it warm for 3.5h, then lower it to room temperature in the furnace, and perform preliminary incomplete annealing on the stainless steel plate, It can improve the processing performance of stainless steel and remove the internal stress in stainless steel;

[0050] S4: ...

Embodiment 3

[0064] An on-line annealing method for a stainless steel clad strip, comprising the following steps:

[0065]S1: Cut out plates with a width of 1600mm and a thickness of 2.0mm from stainless steel plates and carbon steel plates;

[0066] S2: Put the stainless steel plate in S1 into the annealing furnace and heat it to 900 °C at a heating rate of 180 °C / h, keep it for 5 hours, and then lower it to room temperature at a rate of 90 °C / h in the furnace. Incomplete annealing can improve the processing performance of stainless steel and remove internal stress in stainless steel;

[0067] S3: Put the carbon steel plate in S1 into the annealing furnace and heat it to 700°C at a heating rate of 220°C / h, keep it warm for 4h, and then lower it to room temperature in the furnace, and perform preliminary incomplete annealing on the stainless steel plate, which can Improve the processing performance of stainless steel and remove the internal stress in stainless steel;

[0068] S4: adopt u...

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Abstract

The invention relates to the technical field of stainless steel composite plate strip annealing, in particular to a stainless steel composite plate strip online annealing method. The method comprisesthe specific steps that S1, plates with the width of 1200-1600 mm and the thickness of 0.3-2.0 mm are cut from a stainless steel plate and a carbon steel plate; S2, the stainless steel plate obtainedin the step S1 is put into an annealing furnace to be heated to 850-900 DEG C at the heating speed of 150-180 DEG C per hour, heat preservation is conducted for 4-5 hours, and then the stainless steelplate is cooled to room temperature; S3, the carbon steel plate obtained in the step S1 is placed in the annealing furnace to be heated to 650-700 DEG C at the heating speed of 180-220 DEG C per hour, heat preservation is carried out for 3-4 hours, and then the carbon steel plate is cooled to the room temperature in the furnace; S4, the plates treated in the step S2 and the step S3 are uncoiled and straightened through an uncoiler; S5, the plates treated in the step S4 are subjected to composite welding through a welding machine; S6, the stainless steel composite plate obtained through composite welding is put into a heating furnace to be heated; and S7, the plate is subjected to composite rolling by using a specially-manufactured warm-rolling composite rolling mill, so that a stainless steel composite plate strip is manufactured. The method can improve the cutting performance of carbon steel and stainless steel, and the machining difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of annealing stainless steel clad strips, in particular to an online annealing method for stainless steel clad strips. Background technique [0002] Stainless steel clad plate is a composite plate steel plate combined with carbon steel base and stainless steel cladding. Its main feature is that carbon steel and stainless steel form a firm metallurgical bond, which can be processed by hot pressing, cold bending, cutting, welding, etc. , has good process performance, stainless steel clad plate not only has the corrosion resistance of stainless steel, but also has good mechanical strength and processing performance of carbon steel, stainless steel clad plate is a kind of clad plate strip, and clad plate strip is passed through various It is produced by a compound processing method, but the rolling method is commonly used, and the existing stainless steel clad strips are placed in an annealing furnace as a whole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D1/74C21D8/02C21D9/52B23K9/16B23K9/235
CPCB23K9/16B23K9/235C21D1/26C21D1/74C21D8/0205C21D9/52
Inventor 包仲南徐泷黄伟马德高陈昊玉晓波
Owner OKUMTEC TECH WENZHOU CO LTD