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A thin-walled square tube continuous restraint quenching device

A quenching device and thin-walled technology, which is applied in the direction of quenching devices, furnaces, heat treatment equipment, etc., can solve the problems of poor controllability, low production efficiency, and poor uniformity of the quenching process, and achieve improved mechanical properties and service performance, and high production efficiency , High-strength uniform quenching effect

Active Publication Date: 2022-07-08
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

[0007] In view of the problems of poor quenching uniformity of existing high-strength thin-walled square tubes, poor controllability of the quenching process, serious material distortion after quenching, and low production efficiency, the purpose of the present invention is to provide a continuous restraint quenching device for thin-walled square tubes, which can meet the high uniformity requirements of such steel products. High-precision, high-precision, high-efficiency quenching heat treatment

Method used

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  • A thin-walled square tube continuous restraint quenching device
  • A thin-walled square tube continuous restraint quenching device
  • A thin-walled square tube continuous restraint quenching device

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Embodiment Construction

[0023] Take the wear-resistant steel square tube with an outer side length of 150mm and a wall thickness of 8mm as an example. Figure 1-5 , to explain the specific implementation of the thin-walled square tube continuous restraint quenching device. Before the square tube 4 is quenched, the hydraulic cylinder 15 installed on the side of the traverse mechanism 22 of the water spray system 3 is controlled and extended by the servo control system 14, the large water spray unit 20 is positioned on the concentric axis of the square tube 4, and the small water spray unit 21 is positioned. Move laterally out of the quenched area. From front to back, a total of 5 groups of water spray systems and 3 large water spray units 20 are opened, with a pressure of 2bar and a water volume of 40m 3 The cooling water per hour enters the 4 groups of water mist nozzles 25 of the 3 large water spray units 20 of the water spray system through the water inlet pipeline 24, with a pressure of 4 bar and...

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Abstract

A thin-walled square tube continuous restraint quenching device includes a longitudinal restraint system, a transverse restraint system, and a water spray system. The longitudinal restraint system is composed of a longitudinal restraint roller group, a longitudinal hydraulic displacement device, a roller table drive shaft, a drive motor and a reduction box, and is servo controlled. The system controls the hydraulic cylinder to drive up and down the vertical restraint roller, and implements constant position closed-loop control; the structure and working principle of the lateral restraint system are similar to those of the longitudinal restraint system; Automatic switching of water mist nozzles; multiple sets of longitudinal / transverse restraint systems and water spray systems are alternately arranged, and continuous restraint quenching is performed on the square tube. The invention solves the problems of large deformation, poor quenching uniformity and low production efficiency in the quenching process of the square tube, and realizes flexible quenching according to the process path. performance.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of steel, and relates to a continuous restraint quenching device for a thin-walled square tube. Background technique [0002] Square pipe (referred to as square pipe) is a pipe with equal side lengths, usually made of strip steel after flattening, crimping, welding to form a round pipe, and then rolling into a square pipe. This kind of steel is widely used in mechanical chemical industry, automobile, marine engineering, structural manufacturing and other fields. For some special-purpose square pipes, due to high requirements on strength and toughness, harsh service environment, and strict requirements on mechanical properties such as material strength, toughness, plasticity, hardness, corrosion resistance, etc., they need to undergo quenching and heat treatment, and use different heating and cooling systems. Control the steel structure and plate shape to get better performance. [0003] A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/667C21D9/08C21D9/00
CPCC21D1/667C21D9/085C21D9/0012Y02P10/25
Inventor 付天亮张志福贾志伟刘光浩宋国智郭泽宇郑明军
Owner NORTHEASTERN UNIV LIAONING
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