Metal plate strip temperature measuring device for roller type quenching machine and temperature control method

Abstract

The invention relates to the field of metal plate strip heat treatment, in particular to a metal plate strip temperature measuring device for a roller type quenching machine and a temperature controlmethod. The metal plate strip temperature measuring device comprises a protection mechanism, a waterproof box, a purging mechanism and a temperature measuring mechanism; and the metal plate strip temperature measuring device is installed between transition roller ways (9) behind a rolling quenching section (7) and in front of a normal-pressure quenching section (8) of the roller type quenching machine, and temperature measurement can be completed without making contact with a metal plate strip. The temperature control method of the metal plate strip temperature measuring device comprises a speed temperature control method and a water volume temperature control method; and the temperature of the metal plate strip is controlled by changing the running speed of the metal plate strip and the water spraying amount of a water cooling nozzle (37) of the rolling quenching section. The problem that direct temperature measurement is difficult in the quenching heat treatment process of the metalplate strip in the prior art is solved, and more accurate cooling path control in the quenching heat treatment process of the metal plate strip is achieved.

Description

technical field [0001] The invention relates to the field of heat treatment of metal plates and strips, in particular to a temperature measuring device and a temperature control method for metal plates and strips used in a roller quenching machine. Background technique [0002] Quenching heat treatment is a key process to improve the comprehensive properties of metal sheets and strips, especially in improving its strength, toughness, corrosion resistance, high temperature performance, fatigue performance, and processing performance. There are many types of metal sheets and strips that adopt quenching heat treatment, such as: plain carbon steel, stainless steel, aluminum alloy, titanium alloy, high-temperature alloy; the specification span is large, the thickness is 2-300mm, and the width is 800-5000mm; the heat treatment process is complex, such as: solid Melting, quenching, controlled cooling, weak water cooling, etc. [0003] The roller quenching machine has the advantage...

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Problems solved by technology

[0009] In order to solve the problems existing in the prior art that the quenching heat treatment process of metal plates and strips is completely wrapped by water or steam, the equipment in contact with it is densely arranged, the process conditions are poor, the space is small, and the direct temperature measurement is very difficult, the present invention proposes A metal plate and strip temperature measuring device and temperature control method for a roller quenching machine

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