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A stainless steel processing technology

A processing technology, stainless steel technology, applied in hot-dip galvanizing process, metal material coating process, coating, etc., can solve the problem of stainless steel strength, poor tensile resistance and corrosion resistance, difficult to meet the zinc layer thickness, difficult to achieve nitrogen content, etc. problem, to achieve the effect of good galvanizing effect, high uniformity and high product quality

Active Publication Date: 2019-04-23
浙江金信不锈钢制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the preparation process, the nitrogen content in the existing stainless steel is difficult to reach more than 2.5wt%, and the strength, tensile strength and corrosion resistance of stainless steel are poor.
[0003] In order to further improve the corrosion resistance of stainless steel, galvanizing treatment is usually performed on the surface of stainless steel, but in the existing hot-dip galvanizing process, the adhesion of the plating solution to the workpiece is poor, and the thickness of the zinc layer is difficult to reach the standard, and the uniformity Not high, easy to form dark gray coating

Method used

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  • A stainless steel processing technology
  • A stainless steel processing technology
  • A stainless steel processing technology

Examples

Experimental program
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Embodiment 1

[0032]In this embodiment, taking the manufacture of angle steel as an example, the processing technology is as follows: (1) stainless steel water refining: obtain raw materials: 150 kg of pyrite with a water content of 10, 50 kg of pentlandite with a water content of 10, 50 kg of coke, two Put 30kg of silicon oxide, 40kg of manganese dioxide, and 70kg of chalcopyrite into a sintering furnace for 30 minutes of sintering and reduction to obtain billets; then take 50kg of blanks, 500L of molten steel, and 30kg of ferromolybdenum and put them into the smelting furnace to maintain The temperature of the smelting furnace is 1500°C, the pressure is 1.2Mpa, and the smelting is carried out for 20 minutes; during the smelting process, nitrogen gas is fed into the smelting furnace at a rate of 5L / min for 20 minutes, and the molten state is obtained after the smelting is completed. (2) Steel rolling: Roll the molten stainless steel raw material through a rolling mill to obtain an angle ste...

Embodiment 2

[0038] In this embodiment, taking the manufacture of angle steel as an example, the processing technology is as follows: (1) stainless steel water refining: obtain raw materials: 150 kg of pyrite with a water content of 20%, 50 kg of pentlandite with a water content of 25%, and 50 kg of coke , 30kg of silicon dioxide, 40kg of manganese dioxide, and 70kg of chalcopyrite, put the above raw materials into the sintering furnace for 40min sintering reduction, and obtain the billet; then take 50kg of billet, 500L of molten steel, and 30kg of ferromolybdenum into the smelting furnace , maintain the temperature of the smelting furnace at 1500°C, and the pressure at 1.2Mpa, and carry out smelting for 20 minutes; during the smelting process, maintain the feed rate of 5L / min to feed nitrogen into the smelting furnace for 20 minutes, and obtain Stainless steel raw materials in molten state; (2) Steel rolling: Rolling stainless steel raw materials in molten state through a rolling mill to o...

Embodiment 3

[0041] In this embodiment, taking the manufacture of angle steel as an example, the processing technology is as follows: (1) stainless steel water refining: obtain raw materials: 150 kg of pyrite with a water content of 15%, 50 kg of pentlandite with a water content of 15%, and 50 kg of coke , 30kg of silicon dioxide, 40kg of manganese dioxide, and 70kg of chalcopyrite, put the above raw materials into the sintering furnace for 30min sintering and reduction, and obtain the billet; then take 50kg of billet, 500L of molten steel, and 30kg of ferromolybdenum into the smelting furnace , maintain the temperature of the smelting furnace at 1500°C, and the pressure at 1.2Mpa, and carry out smelting for 20 minutes; during the smelting process, maintain the feed rate of 5L / min to feed nitrogen into the smelting furnace for 20 minutes, and obtain Stainless steel raw materials in molten state; (2) Steel rolling: Rolling stainless steel raw materials in molten state through a rolling mill ...

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Abstract

The invention discloses a stainless steel processing technology. A furnace shell, a hearth, a gas inlet part arranged on the hearth, an opening formed in the furnace shell and matched with the gas inlet part, and a gas inlet pipe matched with the gas inlet part are included. The gas inlet part is provided with a connecting cavity. The bottom of the connecting cavity is provided with a gas inlet. Aseal part is arranged in the connecting cavity. A first seal layer is arranged between the seal part and the bottom face of the connecting cavity. A second seal layer is arranged between the seal part and the gas inlet pipe. In the stainless steel processing technology, through matching of the seal part, the first seal layer and the second seal layer, seal matching between the gas inlet pipe andthe connecting cavity is achieved effectively, the condition of gas leakage between the gas inlet pipe and the connecting cavity is avoided, a vacuum state in the hearth is maintained all the time, and degassing refining of molten materials in the hearth is achieved.

Description

technical field [0001] The invention belongs to the technical field of stainless steel manufacturing, and in particular relates to a stainless steel processing technology. Background technique [0002] Stainless steel is resistant to air, steam, water and other weak corrosive media or has stainless steel. When the nitrogen element in stainless steel is high, the corrosion resistance of stainless steel will be greatly improved. However, due to the limitation of the preparation process, the nitrogen content in the existing stainless steel is difficult to reach more than 2.5wt%, and the strength, tensile strength and corrosion resistance of the stainless steel are poor. [0003] In order to further improve the corrosion resistance of stainless steel, galvanizing treatment is usually performed on the surface of stainless steel, but in the existing hot-dip galvanizing process, the adhesion of the plating solution to the workpiece is poor, and the thickness of the zinc layer is d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04C21C5/00C23C2/06
CPCC21C5/005C22C33/04C23C2/06
Inventor 吴文君
Owner 浙江金信不锈钢制造有限公司