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Device and method for directly quenching seamless steel pipes

A technology of seamless steel pipe and quenching device, applied in the direction of quenching device, quenching agent, furnace type, etc., can solve the problems of easy bending of pipes and inability to quench large-diameter pipes, and achieve the advantages of convenient operation, simple device structure and good application prospects Effect

Inactive Publication Date: 2009-11-04
刘彦春
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  • Application Information

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Problems solved by technology

However, due to the characteristics of the shape of seamless steel pipe products, there are not many technologies and processes for directly spraying water on the inner surface of the steel pipe. There are two main direct quenching methods currently used, one is immersion quenching, which is suitable for Pipes of various calibers, but the pipes are easy to bend after quenching; the other is internal spray and external shower quenching, which is only suitable for small-diameter pipes and cannot be quenched for large-diameter pipes

Method used

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  • Device and method for directly quenching seamless steel pipes
  • Device and method for directly quenching seamless steel pipes
  • Device and method for directly quenching seamless steel pipes

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Embodiment

[0031] Seamless steel pipe direct quenching device such as figure 1 As shown, it includes a variable-angle roller table device, an outer surface cooling device and an inner surface cooler 2, the inner surface cooler 2 is rod-shaped, and the local structure is as follows image 3 As shown, the outer surface is provided with a water outlet 17, and the interior is provided with a water channel 16, and the water outlet 17 communicates with the water channel 16, and the water channel 16 is provided with an inner surface cooler water inlet 11; the outer surface cooling device includes 4 annular cooling device, the annular cooler 3 is structured as figure 2 As shown, it is composed of an annular wall 13 and a water cavity 14, the annular wall 14 is provided with a water spray hole 15, the water spray hole 15 communicates with the water cavity 14, and the water cavity 14 is provided with an outer surface cooler water inlet 12, The water inlets of each annular cooler communicate with...

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Abstract

The invention provides a device and a method for directly quenching seamless steel pipes, which belongs to the technical field of metallurgy. The device comprises a variable-angle roller bed device, an outer-surface cooling device and an inner-surface cooler, wherein the inner-surface cooler is in a rod shape; the outer-surface cooling device consists of at least one annular cooler; the inner-surface cooler is positioned above the variable-angle roller bed device; and the inner-surface cooler is inserted in the middle of an annular wall. The method comprises the steps of supplying cooling media to the inner-surface cooler and the outer-surface cooling device, conveying steel pipes to the inside of the annular cooler and the outside of the inner-surface cooler and implementing quenching. The invention can solve the problem that steel pipes are easy to bend in a quenching process. The device has the advantages of simple structure and convenient operation.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and particularly relates to a seamless steel pipe direct quenching device and method. Background technique [0002] Direct quenching (DQ) is an important means to improve the comprehensive mechanical properties of steel materials. In the field of seamless steel pipe production, many direct quenching methods and equipment have been developed. However, due to the characteristics of the shape of seamless steel pipe products, there are not many technologies and processes for directly spraying water on the inner surface of the steel pipe. There are two main direct quenching methods currently used, one is immersion quenching, which is suitable for Pipes of various calibers, but the pipes are easy to bend after quenching; the other is internal spray and external shower quenching, which is only suitable for small-diameter pipes and cannot be quenched for large-diameter pipes. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/667C21D1/60C21D1/18C21D9/08
CPCY02P10/20
Inventor 刘彦春李东李群付乃民师汉奎万志兴
Owner 刘彦春
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