A steel wire water bath and air-cooled quenching unit

Abstract

The invention discloses a steel wire water bathing and air cooling quenching unit which comprises a water bathing quenching unit body and an air cooling quenching unit body. The air cooling quenching unit body is arranged on the downstream portion of the water bathing quenching unit body, and the air cooling quenching unit body and the water bathing quenching unit body are in mutual linkage. The water bathing quenching unit body is provided with a plurality of water baths, the length of the water baths is controlled through movable baffles capable of moving, and accordingly the water bathing quenching time for steel wires is controlled. The air cooling quenching unit body can control the temperature independently and intelligently, and the influences of the environment temperature on air cooling are reduced. According to the water bathing and air cooling quenching unit, the quenching time and quenching length can be adjusted freely, and products with different specifications and strengths can be produced at the same time; and in addition, the water bathing and air cooling quenching unit can control the temperature independently, so that the steel wires are quenched within the required quenching temperature range all the time, the quenching effect of the steel wires is improved, and the stability of mechanical properties of the steel wires is guaranteed.

Description

technical field [0001] The invention relates to a steel wire water bath and air cooling quenching unit, which is used for isothermal water bath quenching and air cooling quenching for steel wires. Background technique [0002] Steel wire isothermal water bath and air cooling quenching is a heat treatment process of immersing steel wire in an aqueous solution containing high molecular polymer for continuous rapid cooling, rapid air cooling, air cooling and heat preservation. In order to achieve this purpose, before the steel wire is cooled and quenched in an isothermal water bath and non-isothermal air, the steel wire must first be heated to a state of complete austenite crystal structure and obtain austenite crystal structure with a grain size of 7-8. The purpose of steel wire isothermal water bath and non-isothermal air cooling and quenching is to obtain a sorbite crystal structure with uniform and fine grains, and then obtain higher strength, toughness and good plasticity....

AI Technical Summary

Problems solved by technology

[0003] The isothermal water bath quenching unit for steel wire generally includes an upper quenching tank and a lower liquid storage tank. The quenching liquid is stored in the liquid storage tank and is circulated to the upper quenching tank. This isothermal water bath quenching unit has the following disadvantages: 1. The current upper Quenching tanks are only suitable for quenching steel wires with larger diameters, and steel wires with smaller diameters are more sensitive to temperature. The current upper quenching tanks are difficult to control the quenching time, quenching length, and cooling speed. When the quenching liquid flows in the upper quenching tank, the liquid level fluctuates relatively large, and the contact between the steel wire and the quenching liquid is not uniform enough, resulting in uneven cooling of the steel wires, resulting in uneven quality of the steel wires, and even due to the uneven cooling of the steel wires with smaller diameters. 2. In addition, the current upper quenching tank cannot produce steel wires of different quenching specifications at the same time; 3. When the steel wire is quenched in the upper quenching tank, it is generally in a relatively open state, and some baffles are used for heat preservation and The temperature control effect is not obvious. After the steel wire passes through the heating furnace and enters the upper quenching tank, some impurities may be brought into the upper quenching tank, such as oxides, oxide scales or borax in the heating furnace. The flow of the quenching liquid is stored in the liquid storage tank, which will affect the concentration of the quenching liquid and the water bath effect of the steel wire; 4. The current water bath quenching unit and the air-cooling quenching unit are used together, and the belting of the steel wire is very troublesome, and there is no need to The special belting device, the pulling of the steel wire before the start-up and the pulling of the quenched steel wire after the wire is broken are all done manually, that is, by pulling the steel wire and operating the worker to hold the support rod to raise the steel wire, so that the steel wire is pulled on the support rod. After the completion, put down the support bar to let the steel wire fall to the normal operation position. However, this method of belting requires more operators. At the same time, the support bar needs to be inserted into the quenching area of ​​the unit for operation, which is prone to burns. wait for danger

In addition, during production operations, the hanging board must be opened or the steel wire is exposed in the air when the pressing board is operated.

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