A kind of heat-resistant stainless steel seamless steel pipe and the manufacturing method of stainless steel and seamless steel pipe

A technology of heat-resistant stainless steel and seamless steel pipe, which is applied in the manufacturing field of heat-resistant stainless steel seamless steel pipe and stainless steel and seamless steel pipe, and can solve the problems of low performance, toughness, lasting strength, oxidation resistance and poor high temperature structure stability.

Active Publication Date: 2016-09-21
太原钢铁(集团)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing austenitic heat-resistant stainless steel seamless pipe has low performance, poor toughness, durable strength, oxidation resistance and high temperature structure stability, and cannot meet the above requirements. In order to meet these stringent requirements, it is necessary to develop a new type of heat-resistant austenitic Stellite seamless pipe

Method used

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  • A kind of heat-resistant stainless steel seamless steel pipe and the manufacturing method of stainless steel and seamless steel pipe
  • A kind of heat-resistant stainless steel seamless steel pipe and the manufacturing method of stainless steel and seamless steel pipe
  • A kind of heat-resistant stainless steel seamless steel pipe and the manufacturing method of stainless steel and seamless steel pipe

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Embodiment Construction

[0125] The specific implementation of the present invention will be described in detail below in conjunction with the examples, but the specific implementation of the present invention is not limited to the following examples.

[0126] Examples of austenitic stainless steel

[0127] The composition mass percent of this austenitic stainless steel embodiment is:

[0128] C 0.06% Si 0.10% Mn 0.40% P 0.001% S 0.001%

[0129] Cr 21.00% Ni 23.5% Cu 3.0% Mo 2.30% N 0.25%

[0130] Nb 0.5% W 3.0% Co 2.5% B 0.006% Al 0.02%,

[0131] The rest is Fe and unavoidable impurities.

[0132] Examples of Austenitic Stainless Steel Seamless Steel Tubes

[0133] The specification of this austenitic stainless steel seamless steel pipe embodiment is Ф51×10 mm, the length is 12000 mm, and its composition mass percentage is:

[0134] C 0.06% Si 0.10% Mn 0.40% P 0.001% S 0.001%

[0135] Cr 21.00% Ni 23.5% Cu 3.0% Mo 2.30% N 0.25%

[0136] Nb 0.5% W 3.0% Co 2.5% B 0.006% Al 0.02%,

[0137] The r...

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Abstract

The invention relates to a heat-resistant stainless steel seamless steel pipe and a method for manufacturing the stainless steel and the seamless steel pipe. The mass percentage of seamless steel pipe and stainless steel is: C 0.03%~0.08%; 0<Si≤0.50%; 0<Mn≤0.50%; P<0.020%; S<0.020%; %~31%; Cu 2.00~4.00%; N 0.10~0.35%; Nb 0.30~0.65%; W 1.0~5.0%; 0<Mo≤0.40%; Co 1.0~4.0%; B 0.003~0.009%; 0< Al≤0.04%. The manufacturing method of seamless steel pipe: 1. Austenitic stainless steel is smelted and smelted; 2. The molten steel is poured into a steel ingot; 3. The tube blank is processed into a forged steel ingot, and the center through hole is processed into a tube blank; 4. Extruded into a capillary tube for reaming +The method of extrusion makes the tube blank into capillary; 5. Deep processing of steel pipe The capillary is repeatedly cold drawn and pickled to make a finished product. The heat-resistant stainless steel seamless steel pipe of the present invention can be used in boilers of 700°C ultra-supercritical thermal power units.

Description

[0001] A heat-resistant stainless steel seamless steel pipe and a method for manufacturing the stainless steel and the seamless steel pipe. technical field [0002] The invention relates to a heat-resistant stainless steel seamless steel pipe and a method for manufacturing the stainless steel and the seamless steel pipe, in particular to an austenitic heat-resistant stainless steel seamless pipe and a method for manufacturing the stainless steel and the seamless steel pipe. Background technique [0003] China is currently the world's largest coal producer and consumer, as well as the world's largest carbon dioxide emitter. In response to climate change, China is now facing enormous pressure to reduce carbon dioxide emissions. In 2013, China's coal consumption reached 3.6 billion tons, of which coal used for coal-fired power generation accounted for about 55% of the country's total coal consumption. In fact, coal-fired thermal power is China's largest and most concentrated so...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22C38/54C22C33/04C21D8/10
Inventor李阳方旭东夏焱王岩李莎王志斌范光伟李建民
Owner太原钢铁(集团)有限公司