High-corrosion-resistance stainless steel and manufacturing method thereof

A corrosion-resistant, stainless steel technology, applied in the field of high-corrosion-resistant stainless steel production, can solve the problem that the lid of the thermos cup is not easy to unscrew, and achieve the effect of avoiding excessive internal pressure, saving process and cost, and saving grinding steps

Inactive Publication Date: 2022-01-18
上海禾技智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the deficiencies of the prior art, if the hot water poured into the thermos cup is not drunk for a long time, the water temperature will gradually drop to normal temperature. The pressure inside the thermos cup is relatively low compared to the initial pressure, and the interior of the thermos cup will form a relatively negative pressure state, which makes the lid of the thermos cup difficult to unscrew. The invention proposes a high corrosion-resistant stainless steel and its manufacturing method

Method used

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  • High-corrosion-resistance stainless steel and manufacturing method thereof
  • High-corrosion-resistance stainless steel and manufacturing method thereof
  • High-corrosion-resistance stainless steel and manufacturing method thereof

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preparation example Construction

[0044] The preparation method of the corrosion-resistant stainless steel is as follows:

[0045] S1: Weigh each component in material group 1, material group 2 and material group 3, and then put them into high-temperature furnace for smelting to obtain molten iron. The temperature inside the high-temperature furnace is controlled at 1560-1700°C, and then The molten iron smelted in Group 1 is poured into the sand mold to make the insulation bottom 3, the molten iron smelted in the material group 2 is poured into the sand mold to make the insulation outer cylinder 1 and the insulation inner cylinder 2 respectively, and finally the molten iron obtained in the material group 3 is smelted Pour into the sand mold to make the connector 5 for connecting the heat preservation inner cylinder 2 and the heat preservation bottom 3;

[0046] S2: Store the connecting piece 5 in a low temperature environment for 20-25 hours, the storage temperature is -20-28°C, and put the insulation inner cy...

Embodiment approach

[0052] As an embodiment of the present invention, the inner wall of the first annular connecting groove 4 is evenly provided with raised thorns 11; the raised thorns 11 are composed of material group three; The connected molten iron will be integrally formed with the protruding thorns 11 on the inner wall of the first annular connecting groove 4 when it is solidified, so that the connection between the molten iron and the inner wall of the first annular connecting groove 4 is more firmly connected, further increasing the size of the first annular connection. The connection strength and pull-out resistance of the connecting groove 4 and the connecting piece 5.

[0053] As an embodiment of the present invention, the bottom edge of the thermal insulation inner cylinder 2 and the top edge of the thermal insulation bottom 3 are provided with a second annular connection groove 8 communicating with two sets of first annular connection grooves 4; The cross-section of the annular conne...

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Abstract

The invention belongs to the technical field of high-corrosion-resistance stainless steel production, and particularly relates to high-corrosion-resistance stainless steel and a manufacturing method thereof. The high-corrosion-resistance stainless steel comprises a first material group, a second material group and a third material group. The first material group is prepared from the following raw materials, by weight: 0.08-0.15% of C, 0.01-0.6% of Si, 0.02-0.6% of Mn, 0.01- 0.03% of P, 0.0002-0.03% of S, 12- 14% of Cr, 0.8-1.5% of Mo, 1.2-6% of Bi, 0.1-0.3% of V and the balance iron. Through the arrangement of an elastic heat preservation bottom, when hot water is contained in a heat preservation inner cylinder and the heat preservation bottom, the internal pressure of the heat preservation inner cylinder and the heat preservation bottom is gradually increased, and at the moment, the heat preservation bottom is deformed, so that the size is increased, the problem that a heat preservation cup cover is bounced off due to overlarge internal pressure caused when the interior of the heat preservation inner cylinder and the interior of the heat preservation bottom are overfilled with water can be avoided, meanwhile the elastic heat preservation bottom can keep the interior of the heat preservation inner cylinder and the interior of the heat preservation bottom in a state similar to constant pressure, and therefore, the problem that a sealing cover on a heat preservation cup is difficult to open when the temperature of water in the heat preservation inner cylinder and the heat preservation bottom is reduced after long-time storage is avoided.

Description

technical field [0001] The invention belongs to the technical field of high-corrosion-resistant stainless steel production, in particular to a high-corrosion-resistant stainless steel and a manufacturing method thereof. Background technique [0002] Stainless steel (Stainless Steel) is the abbreviation of stainless acid-resistant steel, and the steel grades that are resistant to weak corrosive media such as air, steam, and water, or have stainless properties are called stainless steel; Corrosion) Corroded steel is called acid-resistant steel. [0003] Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. The term "stainless steel" does not simply refer to one kind of stainless steel, but refers to more than one hundred kinds of industrial stainless steels, and each developed stainless steel has good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/38C22C33/04C22C30/00B22C9/02B22C9/22B22D19/04B24B9/04A47G19/22
CPCC22C38/02C22C38/04C22C38/38C22C38/22C22C38/002C22C38/24C22C38/06C22C33/04B22C9/02B22C9/22B22D19/04C22C30/00C22C12/00B24B9/04A47G19/2288
Inventor 徐海艳
Owner 上海禾技智能科技有限公司
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