Tunnel steel pipe quenching device and quenching method thereof

A quenching equipment and tunnel-type technology, which is applied in the direction of quenching devices, heat treatment equipment, furnaces, etc., can solve problems affecting the quenching quality of steel pipes, and achieve the effect of improving quality

Inactive Publication Date: 2012-11-14
TAIYUAN HEAVY IND
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a tunnel type steel pipe quenching equipment and its quenching method, solve the problem that the existing quenching equipment cannot adjust the steel pipe at different temperatures in the tunnel according to the different cooling speeds required by the phase change of the steel pipe material The cooling rate, which affects the quenching quality of the steel pipe

Method used

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  • Tunnel steel pipe quenching device and quenching method thereof
  • Tunnel steel pipe quenching device and quenching method thereof
  • Tunnel steel pipe quenching device and quenching method thereof

Examples

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Embodiment Construction

[0019] Such as image 3 , 4 Shown: a tunnel-type steel pipe quenching equipment, including: a roller table device 1 at an angle of 10° to the tunnel axis, a quenching tunnel 2 installed on a tunnel support 3, and the tunnel support 3 is connected with a lifting device 4 and is formed by Driven by the lifting device 4, the roller table device 1, the lifting device 4 are installed on the base 5 together with the tunnel support 3 and the quenching tunnel 2, and the inside of the quenching tunnel 2 is provided with a ring-shaped nozzle pipe connected to the external water pump of the tunnel; The quenching area of ​​tunnel 2 is composed of the rapid cooling zone 2-1 with densely arranged annular nozzles, the slower cooling zone 2-2 with annular nozzles, and the slow cooling zone 2-3 with gas-water mixing nozzles, which are independently controlled , the three independently controlled units are: the densely packed annular nozzle quenching unit directly connected to the tunnel exter...

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Abstract

The invention discloses a tunnel steel pipe quenching device and a tunnel steel pipe quenching method, relating to a seamless steel pipe production device and solving a problem that the current quenching device can not regulate the cooling speed of the steel pipe under different temperatures in the tunnel according to different cooling speeds needed for steel pipe material phase change. The quenching area of a quenching tunnel provided by the invention comprises units, which are independently controlled by a quenching area, a relative slow cooling area and a slow cooling unit respectively. The quenching method comprises the following steps: (1) after a roller drives the steel pipe to enter the quenching area, starting a water pump to carry out large-flow water injection cooling; (2) after the roller drives the steel pipe to enter the relative slow cooling area of the tunnel, starting the water pump to carry out small-flow water injection cooling; (3) after the roller drives the steel pipe to enter the slow cooling area of the tunnel, carrying out gas injection mixed cooling. The quenching device is used for a seamless steel pipe thermal treatment production line so as to precisely adjust the cooling speed at different temperatures of the steel pipe in a quenching process, thereby improving the quality of the steel pipe product.

Description

technical field [0001] The invention relates to a production method of a seamless steel pipe, in particular to a tunnel type steel pipe quenching equipment and a quenching method of a steel pipe heat treatment production line. technical background [0002] The performance of the tunnel quenching equipment in the steel pipe heat treatment production line has an important impact on the quality of the finished steel pipe and the production efficiency of the entire unit. [0003] Existing tunnel type steel pipe quenching equipment, such as figure 1 , 2 As shown: the roller table device 1 forms an angle of 10° with the tunnel axis to ensure that the steel pipe advances while rotating during the quenching process. The quenching tunnel 2 is installed on the tunnel support 3, driven by the lifting device 4 to move up and down, so that the height can be adjusted to adapt to steel pipes of different diameters. The above roller table device 1, quenching tunnel 2, tunnel support 3, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/667C21D9/08
Inventor 周超
Owner TAIYUAN HEAVY IND
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