Intermediate-frequency quenching equipment for inner walls of steel tubes

Abstract

The invention relates to intermediate-frequency quenching equipment for the inner walls of steel tubes. The adopted technical scheme is as follows: the intermediate-frequency quenching equipment comprises a cooling tower and a quenching part, and is characterized in that the quenching part is installed on a non-workpiece side installed on the body of a quenching machining tool, a supporting plate at a workpiece side is installed on the body of the quenching machining tool through a linear guideway on the body of the quenching machining tool; the supporting plate is in threaded connection with a nut-screw pair, the nut-screw pair is connected with a supporting plate drive system, a chuck capable of fixing a pipeline workpiece is arranged on the supporting plate, and the chuck is connected with a workpiece rotation drive system; the quenching main machine of the quenching machining tool of the quenching part is connected with a quenching coil and a spray coil. The intermediate-frequency quenching equipment has the following beneficial effects that a quite high quenching quality can be easily obtained, the quenching quality is high, the production cost is low, the automation degree is high, the depth of a quenching layer, a quenching hardness and the like can be controlled, the oxidation burns of metal are less, the oxide skins are few, and the deformation amount is low, in this way, the waste of metal materials is reduced, the control is simple, and requirements on the labour skill levels of workers are low.

Description

technical field [0001] The invention relates to a quenching device for the inner wall of a steel pipe, in particular to an intermediate frequency quenching device for the inner wall of a steel pipe. Background technique [0002] Before the appearance of this equipment, flame quenching was mostly used, and flame quenching had the following disadvantages: [0003] (1) It is not easy to control the quality stably. The quality of flame quenching is controlled by many factors: such as the ratio of oxyacetylene, the skill level of the operator, etc., which can directly affect the quality of the workpiece; [0004] (2) Most of them are manually operated and visually observed to grasp the temperature. The surface is easy to burn, overheat and quench, and it is difficult to achieve a uniform quenched layer and high surface hardness. [0005] (3) It is difficult to realize mechanized flow production. [0006] (4) The uniformity of flame heating is difficult to ensure, so it is eas...

AI Technical Summary

Problems solved by technology

The surface is easy to be burned, overheated and quenched, and it is difficult to achieve a uniform quenched layer and high surface hardness

[0005](3) It is difficult to realize mechanized production

[0006](4) The uniformity of flame heating is difficult to ensure, so it is easy to crack when surface quenching medium-high carbon and alloy steel

[0007] Flame quenching is prone to burns of metal materials, more oxide scales, and waste of metal materials

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