Unlock instant, AI-driven research and patent intelligence for your innovation.

A production process of 410s martensitic stainless steel

A martensitic stainless steel, production process technology, applied in the direction of process efficiency improvement, etc., can solve the problems of multi-energy, large slab heat consumption, corrugated fine lines of steel strip, etc., and achieve the goal of reducing energy consumption and heat The effect of loss and avoiding internal stress

Active Publication Date: 2022-05-17
山东盛阳金属科技股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The Chinese brand of 410S stainless steel is 0Cr13. It is based on 410 (1Cr13) stainless steel. It is a martensitic stainless steel that improves the intergranular corrosion resistance of the steel by reducing the carbon content in the steel. It has the following deficiencies in the production process: 1 ) In the process of rolling the slab, it is necessary to transfer the slab, which will consume a large amount of heat of the slab itself, and heating before rolling will consume more energy; 2 ) At present, there are transverse cracks on the surface of the slab. During the rolling process, the surface of the steel strip is prone to corrugated fine lines and hot-rolled edge cracks.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A 410S martensitic stainless steel production process, the 410S martensitic stainless steel composition weight percentage is: C=0.08%, Si=1%, Mn=1%, P=0.04%, S=0.03%, Cr=13.5%, Ni=0.6%, the balance is Fe and a small amount of unavoidable impurities; its production process includes the following steps:

[0027] Step 1, electric arc furnace heating: each chemical element is added in order by weight percentage: carbon: 2.3%, silicon 1%, manganese 0.8%, phosphorus 0.05%, the rest is scrap steel with carbon powder or coke, and the temperature is 1500 ℃ for sampling and full analysis. The following parameters are controlled during tapping: carbon 1.8%, phosphorus 0.01%, tapping temperature 1630°C, slag is strictly prohibited during tapping, and slagging materials are added when tapping 1 / 4 of the steel;

[0028] Step 2, AOD furnace processing: Add 1.8% carbon, 0.5% silicon, and 0.4% phosphorus to the molten steel in the furnace in turn according to the weight percentage. 168...

Embodiment 2

[0041] Compared with embodiment 1, the difference is:

[0042] A production process of 410S martensitic stainless steel, step 6, slab heating: the thickness of the slab is 170mm-220mm, the slab is heated by a heating stepping furnace, the temperature of the slab entering the furnace is 550°C-650°C, and the preheating section is heated. The time is controlled at 95 minutes; when the temperature of the preheating section is between 900°C and 1000°C, the time is controlled at 80 minutes; at the end of the preheating section, it enters the first heating stage, and the heating temperature of the first stage is 1060°C to 1100°C, and the time is controlled at 45 minutes. Two-stage heating, the second-stage heating temperature is 1160℃~1180℃, and the time is controlled at 70min. After the second-stage heating is completed, it enters the soaking section for heating. The heating temperature of the soaking section is 1180℃~1185℃, and the time is controlled at 45min. The total heating time...

Embodiment 3

[0047] Compared with embodiment 1, the difference is:

[0048] A production process of 410S martensitic stainless steel, step 6, slab heating: the thickness of the slab is 170mm-220mm, the slab is heated by a heating stepping furnace, the temperature of the slab entering the furnace is 550°C-650°C, and the preheating section is heated. The time is controlled at 90 minutes; when the temperature of the preheating section is between 900°C and 1000°C, the time is controlled at 80 minutes; at the end of the preheating section, it enters a heating stage, and the heating temperature of the first stage is 1060°C to 1100°C, and the time is controlled at 45 minutes. Two-stage heating, the second-stage heating temperature is 1160℃~1180℃, and the time is controlled at 65min. After the second-stage heating is completed, it enters the soaking section for heating. The heating temperature of the soaking section is 1180℃~1185℃, and the time is controlled at 40min. The total heating time in the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a 410S martensitic stainless steel production process, including electric arc furnace heating, AOD furnace processing, LF furnace processing, continuous casting, billet transfer, slab heating, billet rough rolling, billet finish rolling, laminar flow cooling, coiling Take; the present invention makes 410S stainless steel through this production process, and after steel billet completes rough inspection and reaches hot-rolled quality requirement, slab is put into special incubator, and incubator and slab are simultaneously transported, and the consumption of energy is reduced, Steam descaling is used for billet finishing rolling. The finishing rolling unit adopts 8 finishing mills. The temperature at the entrance of finishing rolling is 1100-1150°C. The billet deforms rapidly during the first two passes of rolling, which changes the crystal state inside the billet. In the third pass, no more pressing down, in the fourth to sixth pass, reduce the amount of pressing down and make the amount of pressing down more uniform, so that the surface of the billet tends to be stable, in the last two passes, further reduce The surface of the billet is finished with a small amount of pressure, thereby preventing the appearance of corrugated fine lines on the surface of the billet.

Description

technical field [0001] The invention belongs to the technical field of stainless steel production, in particular to a production process of 410S martensitic stainless steel. Background technique [0002] The Chinese brand of 410S stainless steel is 0Cr13. It is based on 410 (1Cr13) stainless steel. It is a martensitic stainless steel that improves the intergranular corrosion resistance of the steel by reducing the carbon content in the steel. It has the following deficiencies in the production process: 1 ) In the process of rolling the slab, it is necessary to transfer the slab, which will consume a large amount of heat of the slab itself, and heating before rolling will consume more energy; 2 ) At present, there are transverse cracks on the surface of the slab. During the rolling process, the surface of the steel strip is prone to corrugated fine lines and hot-rolled edge cracks. Contents of the invention [0003] The purpose of this invention is to provide a kind of 410...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/40C21D8/02
CPCC22C33/04C22C38/02C22C38/04C22C38/40C21D8/0205C21D8/0226C21D8/0263Y02P10/20
Inventor 周嘉晟冯旺爵
Owner 山东盛阳金属科技股份有限公司