Method for preparing corrosion-resistant 410 stainless steel

A stainless steel, corrosion-resistant technology, applied in the pouring control of molten metal from the ladle, manufacturing tools, casting equipment, etc. Good mold performance, good machinability, good corrosion performance

Active Publication Date: 2017-05-17
马鞍山市中桥金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of environmental protection, vacuum electroslag remelting has almost no pollution to the electroslag workshop; gas-protected remelting has pollution, argon leakage affects the health of workers, and atmospheric pressure electroslag remelting has the most serious environmental pollution in the workshop. more people

Method used

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  • Method for preparing corrosion-resistant 410 stainless steel
  • Method for preparing corrosion-resistant 410 stainless steel
  • Method for preparing corrosion-resistant 410 stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Electroslag remelting air hood assembly, see figure 1 , figure 2 and image 3 As shown, the annular sealing cover 1 is included, the inside of the annular sealing cover 1 is hollow and filled with heat insulating material, the inner side of the annular sealing cover 1 is provided with an opening, and the annular sealing cover 1 is provided with an additional Two through holes 12 are provided on the side of the tube 11 and the annular sealing cover 1 .

[0040] The annular sealing cover 1 comprises two semi-circular sealing covers with the same size and shape, one end of the two semi-circular sealing covers is hinged, and a handle is provided at the other end. Dividing the annular sealing cover into two semi-circular sealing covers facilitates the placement of the sealing cover. A sealing layer is arranged above the annular sealing cover 1 . The sealing layer is rock wool layer. Rock wool can act as a heat insulator and a seal at the same time.

[0041] The two th...

Embodiment 2

[0055] The preparation method of corrosion-resistant 410 stainless steel comprises the following steps:

[0056] (1) Molten steel making: heat the steel slag from the water-washed ball mill at 1520°C for 6 hours to make the steel slag turn into molten steel and boil;

[0057] (2) Primary refining: Refining in LF furnace for 20 minutes, testing every 10 minutes until the sulfur content is lower than 8‰;

[0058] (3) Secondary refining: In the VD furnace, pass through the argon gas to refine for 40 minutes until it does not boil;

[0059] (4) Mixing: Pass the product of step (3) into the smelting furnace, add trace elements, and continue smelting for 1 hour to obtain a smelting liquid; the ratio of the added weight of the trace elements to the total weight of the raw materials is: Cu 0.16%, Mg 1.16 %, Ti 0.06%, Sr 0.18%, Zr 0.28%, B 0.50%, V 0.54%, Zn 0.31%, Re 0.15%, Sn 0.42%, Pb 0.68%, Be 0.25%, Sc 0.21%, Li 0.53% , Ni 0.72%, La 0.03%;

[0060] (5) Pouring: pour the smeltin...

Embodiment 3

[0065] The preparation method of corrosion-resistant 410 stainless steel comprises the following steps:

[0066] (1) Molten steel making: heat the steel slag from the water-washed ball mill at 1530°C for 4 hours to make the steel slag turn into molten steel and boil;

[0067] (2) Primary refining: Refining in LF furnace for 40 minutes, testing once every 10 minutes until the sulfur content is lower than 8‰;

[0068] (3) Secondary refining: In the VD furnace, pass through the argon gas and refine for 20 minutes until it does not boil;

[0069] (4) Mixing: Pass the product of step (3) into the smelting furnace, add trace elements, and continue smelting for 2 hours to obtain a smelting solution; the ratio of the added weight of the trace elements to the total weight of the raw materials is: Cu 0.18%, Mg 1.18 %, Ti 0.08%, Sr0.16%, Zr 0.26%, B 0.46%, V 0.56%, Zn 0.35%, Re 0.18%, Sn 0.38%, Pb 0.66%, Be0.23%, Sc 0.23%, Li 0.55% %, Ni 0.76%, La 0.01%;

[0070] (5) Pouring: pouring ...

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Abstract

The invention provides a method which includes the steps of molten steel preparation, primary refining, secondary refining, mixing, pouring, electroslag ingot preparation and annealing. The invention further provides corrosion-resistant 410 stainless steel prepared through the method. The 410 stainless steel not only has the characteristics of being large in heat conductivity coefficient, small in dilatation coefficient, good in resistance to oxidation, high in strength, good in machinability, magnetic and the like just as those of common 410 stainless steel but also is good in forming resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of stainless steel materials, in particular to a preparation method of corrosion-resistant 410 stainless steel and the corrosion-resistant 410 stainless steel prepared by the method. Background technique [0002] Martensitic stainless steel is a stainless steel whose mechanical properties can be adjusted through heat treatment. In layman's terms, it is a type of hardenable stainless steel. Typical grades are Cr13 type, such as 2Cr13, 3Cr13, 4Cr13 and so on. Martensitic stainless steel has high hardness after quenching, and different tempering temperatures have different combinations of strength and toughness. It is mainly used for steam turbine blades, tableware, and surgical instruments. According to the difference in chemical composition, martensitic stainless steel can be divided into two types: martensitic chromium steel and martensitic chromium-nickel steel. According to the structure and strengthening mechanis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C21C7/064C21C7/10C22B9/18C22C38/60C22C38/56C22C38/54C22C38/50C22C38/46C22C38/42C21B3/06B22D37/00
CPCB22D37/00C21B3/06C21C7/064C21C7/10C22B9/18C22C33/04C22C38/002C22C38/005C22C38/42C22C38/46C22C38/50C22C38/54C22C38/56C22C38/60Y02W30/50
Inventor 钱德桥钱强
Owner 马鞍山市中桥金属材料有限公司
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