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A kind of stainless steel plate with a yield strength of 650mpa and its manufacturing method

A technology of yield strength and stainless steel plate, which is applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve the problems of steel plate strength and toughness mismatch, complex production process, high strength and low strength, and achieve good strength and toughness matching and corrosion resistance. The production process is simple and the effect of improving performance

Active Publication Date: 2020-05-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its production process includes processes such as casting steel ingots, which makes the process complicated and increases the cost
[0008] Compared with the above prior art, it can be seen that the production of high-strength and tough stainless steel mainly has the following deficiencies: (1) the composition of stainless steel is relatively high, resulting in high production costs
(2) The production process is complicated, which virtually increases the production cost of the steel plate
(3) Insufficient mechanical properties, mainly reflected in the mismatch of strength and toughness of the steel plate, high strength and low toughness or high toughness and low strength

Method used

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  • A kind of stainless steel plate with a yield strength of 650mpa and its manufacturing method
  • A kind of stainless steel plate with a yield strength of 650mpa and its manufacturing method
  • A kind of stainless steel plate with a yield strength of 650mpa and its manufacturing method

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Embodiment Construction

[0031] Describe below in conjunction with specific embodiment:

[0032] The following examples are only some optimal implementation modes of the present invention, and do not limit the scope and technical means of the foregoing invention in any way.

[0033] Smelting is carried out according to the range of chemical composition designed in the present invention, and the specific chemical composition is shown in Table 1.

[0034] The chemical composition (wt %) of the embodiment of the present invention of table 1

[0035]

[0036]

[0037] The steel of the chemical composition in Table 1 is smelted and cast into a slab, and the slab can be hot-charged or cold-charged. When hot-charging is adopted, the heating process of each embodiment is as shown in Table 2. The heating process of the example is shown in Table 3.

[0038] Table 2 Heating process during billet hot charging

[0039] serial number Hot charging temperature / ℃ Heating rate / ℃ / min Heating tempe...

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Abstract

The invention discloses a stainless steel plate with the yield strength being 650-MPa grade. The stainless steel plate is prepared from 0.05%-0.15% of C, 0.25%-0.40% of Si, 0.60%-0.80% of Mn, smallerthan or equal to 0.020% of P, smaller than or equal to 0.020% of S, 12.0%-14.0% of Cr, 0.8%-2.0% of Ni, 0.50%-0.80% of Mo, 0.012%-0.02% of N, 0.015%-0.035% of Als, and the balance Fe and other inevitable impurities.

Description

technical field [0001] The invention belongs to the technical field of metal material production, and in particular relates to a stainless steel plate with a yield strength of 650MPa and a manufacturing method thereof. Background technique [0002] With the rapid development of marine engineering, petrochemical, aerospace, pressure vessel and other industries, there is an increasing demand for high-strength, high-corrosion-resistant materials, among which stainless steel is undoubtedly the best choice for solving the problem of corrosion resistance in the use of materials one. Stainless steel is divided into: ferritic stainless steel, austenitic stainless steel, duplex stainless steel and martensitic stainless steel according to the organizational state. The strength of ferritic stainless steel and austenitic stainless steel is relatively low, and they are generally rarely used For components, duplex stainless steel has better overall performance, but its subsequent heat tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/18C21D6/00C21D8/02C21D9/00C22C33/04C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/48C22C38/50C22C38/58C22C38/60
CPCC21D1/18C21D6/004C21D6/005C21D6/008C21D8/0221C21D9/0081C22C33/04C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/48C22C38/50C22C38/58C22C38/60
Inventor 李广龙李文斌金耀辉赵坦范刘群冯丹竹赵宝纯胡昕明王储欧阳鑫
Owner ANGANG STEEL CO LTD