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Processing method of alloying furnace tube

A low-alloy, wear-resistant steel technology, used in the field of radiant tubes, which can solve problems such as failure, furnace tube damage, easy oxidation and creep of furnace tubes

Inactive Publication Date: 2013-06-05
江苏优泽科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the heat treatment furnace is at 800° —— 1200°, long-term continuous operation under 3-4MPa pressure, the furnace tube is easy to oxidize and creep under high temperature and high pressure environment, which makes the furnace tube damaged and invalid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The processing method of the alloy furnace tube is mainly composed of carbon, silicon, manganese, nickel and chromium elements, and is characterized in that: the C content is 0.40~0.50%, the Si content is 1.5~2%, and the Mn content is 15% %, the content of Ni is 34~37%, the content of Cr is 24~28%, and the rest is Nb and other small elements (the content of alloy elements is calculated by weight percentage). After weighing according to the percentage content of each element, put it into an intermediate frequency induction furnace and melt it into molten steel. After melting, take a sample to test its alloy molten steel. After the chemical composition meets the formula requirements, adopt a metal mold centrifugal casting process, and the molten steel is cast into various specifications under the action of centrifugal force. The tube blank is bored by a deep hole boring machine, the inner hole is bored by a deep hole boring machine, the welding groove is processed by a lat...

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Abstract

The invention provides a processing method of an alloying furnace tube which is mainly composed of elements of C, Si, Mn, Ni and Cr. The content of the C is 0.40%-0.50%, the content of the Si is 1.5%-2%, the content of the Mn is 15%, the content of the Ni is 34%-37%, the content of the Cr is 24%-28%, and the rest of the contents are Nb and other minor elements (the content of alloy elements is calculated according to weight percentage). A product produced by the processing method of the alloying furnace tube can continue to work in a long-time mode under 800 degrees-1200 degrees and under pressure of 3-4MPa, in addition, the mechanical property of the product can be ensured, and the metallographic structure and the mechanical performance completely reach the rule of an HG / T2601-94 standard.

Description

[0001] The invention relates to a radiation tube in a heat treatment furnace, in particular to a processing method for an alloy furnace tube. Background technique: [0002] The heat energy of the heat treatment furnace can be provided by electric heating and burning with combustion materials (such as natural gas). Generally, the combustion of combustion materials is used to provide heat energy. When the combustion of combustion materials is used to provide heat energy, due to special Atmosphere, therefore, the combustion of combustibles cannot be carried out directly in the furnace, otherwise the atmosphere in the furnace will be destroyed. Generally, the combustion is carried out in the radiant tube, and the heat energy is radiated into the furnace by the radiant tube. Usually the heat treatment furnace is at 800° —— 1200°, 3-4MPa pressure for long-term continuous operation, the furnace tube is easy to oxidize and creep under high temperature and high pressure environment, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/34C22C38/32
Inventor 马中亮
Owner 江苏优泽科技有限公司