Alloy rolled pipe

A technology for rolling tubes and alloys, applied in the field of alloy rolling tubes, which can solve the problems that the high temperature resistance performance cannot meet the design requirements, and the mechanical properties cannot meet the production requirements, etc.

Inactive Publication Date: 2009-10-14
江苏正祥冶金科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Such products developed by our country often fail to meet the design requirements due to high temperature resistance, and their mechanical properties at high temperatures cannot meet the needs of production.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0004] The alloy rolled pipe of the invention is composed of C content of 0.05-0.10%, Si content of 0.15-0.22%, Mn content of 0.75-0.85%, S content of 0.005-0.015%, P content of 0.01-0.02%, Cr content of 15-25%, The Ni content is 28.0-32.0%, the Cu content is 0.10-0.15%, the Al content is 0.48-0.60%, the Ti content is 0.4-0.5%, and the rest are composed of Fe and trace rare earth elements (the above are calculated by weight percentage). In specific implementation, the content of C is 0.069%, the content of Si is 0.212%, the content of Mn is 0.810%, the content of S is 0.010%, the content of P is 0.012%, the content of Cr is 19.970%, the content of Ni is 31.840%, and the content of Cu is 0.012%. 0.122%, Al is 0.563%, Ti is 0.434%, and the rest is Fe and trace rare earth element Er (all calculated by weight percentage). It is put into an induction furnace for smelting. After reaching a certain temperature, the molten steel is poured into the mold. After cooling, it is forged int...

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Abstract

The alloy rolling pipe of the present invention is widely used in the petrochemical industry and belongs to the field of metallurgical manufacturing. By adding an appropriate amount of alloy elements such as Mn, Cr, Ni, Ti, Al, and trace rare earth elements to the smelting raw materials, the alloy rolling pipe is greatly improved. The normal-temperature mechanical properties of the tubes, as well as the high-temperature short-term mechanical properties and high-temperature durable properties have also been newly improved, which can meet the urgent needs of the petrochemical industry for raw materials for heating tubes, furnace tubes and heat-resistant components, and at the same time save the country A lot of foreign exchange.

Description

Technical field: [0001] The invention relates to an alloy rolled pipe, in particular to an alloy rolled pipe widely used in the petrochemical industry, and belongs to the field of metallurgical manufacturing. technical background: [0002] The high-temperature furnace tubes widely used in the petrochemical industry in my country have always been imported in large quantities due to the need for high temperature resistance and certain mechanical properties at a certain high temperature. On the one hand, it needs to spend a lot of foreign exchange in the country. On the other hand, its core technology has always been in the hands of developed countries, and its production capacity has been greatly affected. Such products developed by our country themselves often fail to meet the design requirements due to their high temperature resistance, and their mechanical properties at high temperatures cannot meet the needs of production. Invention content: [0003] The purpose of the ...

Claims

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Application Information

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IPC IPC(8): F16L9/02C22C38/50
Inventor 王厚祥陈生林
Owner 江苏正祥冶金科技有限公司
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