A kind of controlled cooling method for quenching of high temperature steel pipe through type

Abstract

The invention discloses a controlled cooling method for through-type high-temperature steel pipe quenching, which solves the problems of unsatisfactory cooling rate control and poor circumferential cooling uniformity in the existing through-type quenching device. The V-shaped transmission track (18) that conveys the high-temperature steel pipe (1) passes through the high-temperature section through-type cooling unit (2) and the low-temperature section through-type cooling unit (3) in sequence, and the left pipe section (4) and the right pipe section (5) Connect the middle casing (7) to form a through-shaped cylindrical cavity. The left end casing (6) is set on the left port of the left pipe section (4), and the right pipe section (5) The right port is provided with a right-end casing (8), a forward swirl nozzle (9) is provided in the inner cavity of the left-end casing (6), and a reverse swirling nozzle (9) is arranged in the inner cavity of the right-end casing (8). A swirl nozzle (10); the device of the present invention has a simple structure and is convenient for installation and disassembly.

Description

technical field [0001] The invention relates to seamless steel pipe production equipment, in particular to a through-type high-temperature steel pipe quenching device capable of effectively regulating the cooling rate of the quenched steel pipe and a cooling control method. Background technique [0002] After the seamless steel pipe is rolled, it needs to be quenched and cooled to obtain excellent comprehensive mechanical properties; in the process of quenching and cooling, how to effectively and scientifically control the cooling rate and cooling uniformity of the steel pipe is the key to the quenching of high-temperature steel pipes. The key point is that this process is directly related to the comprehensive mechanical properties of the steel pipe after quenching; after preliminary analysis, the main factors affecting the quenching quality of high-temperature steel pipes are: (1) Whether the quenching and cooling rate of high-temperature steel pipes can be effectively contr...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a controlled cooling method for through-type high-temperature steel pipe quenching, which solves the technical problems of unsatisfactory cooling rate control and poor circumferential cooling uniformity existing in the existing through-type quenching device

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