Constant-temperature control device and method for large workpiece flame quenching

Abstract

The invention provides a constant-temperature control device for large workpiece flame quenching. The constant-temperature control device comprises an intelligent program control driver, an igniter, a gas proportion adjustor, a gas supply source, a flame nozzle, a non-contact type heat release infrared sensor and a large workpiece. Gas in the gas supply source passes through the gas proportion adjustor and is ignited by the igniter through the flame nozzle. The heating temperature of the surface of the large workpiece is inputted to the intelligent program control driver to be displayed and compared after being detected and collected through the non-contact type heat release infrared sensor, and then the gas proportion adjustor is controlled by the intelligent program control driver to adjust the volume of gas outputted by the gas supply source. The constant-temperature control device has the advantages that labor is saved, the labor intensity is lowered, productivity is improved, and the work environment is greatly improved for operators.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a constant temperature control device for flame quenching of large workpieces. Background technique [0002] Flame quenching is a common metal surface heat treatment process at present, that is, a surface quenching method in which the surface of the workpiece is rapidly heated with an acetylene-oxygen flame, and then cooled by spraying water or an organic coolant. Compared with induction heating surface treatment, it is easy to operate, especially suitable for super large, special-shaped workpieces and operations that cannot be completed by other surface heat treatment processes, and is widely used in the current heat treatment industry. However, the vast majority of enterprises still use the traditional process method - manual operation. The defect of this process is: the flame temperature is only controlled by visual observation and empirical judgment, and...

AI Technical Summary

Problems solved by technology

However, the vast majority of enterprises still use the traditional process method - manual operation. The defect of this process is: the flame temperature is only controlled by visual observation and empirical judgment, and it is difficult to ensure the uniformity of flame heating. The surface of alloy steel cracks during quenching, the quality is unstable, the product qualification rate is low, and automatic production cannot be realized; and the production efficiency of manual operation is low, and the labor intensity of the operator is increased at the same time, and the safety is poor. This phenomenon has become serious. It restricts the healthy development of flame surface quenching heat treatment

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