Water-bath quenching unit for steel wires

Abstract

The invention discloses a water-bath quenching unit for steel wires. The water-bath quenching unit comprises an upper quenching tank and a liquid storage tank, wherein the upper quenching tank comprises a quenching tank body and a liquid injection tank body; a liquid inlet section, a wire separating section, a water bath section and a liquid return section are sequentially arranged on the quenching tank body; the liquid inlet section is provided with a liquid inlet channel; a wire separating comb is horizontally rotationally arranged on the wire separating section; the water bath section is provided with a plurality of water-bath sub-tanks for performing water-bath cooling on the steel wires; a moving baffle is glidingly arranged inside each water-bath sub-tank in the moving direction of the steel wires; each moving baffle is connected with a corresponding baffle adjusting mechanism; and a liquid supply system is arranged between the liquid storage tank and the liquid injection tank body. With the adoption of the water-bath quenching unit, the quenching time and the quenching length can be freely adjusted in a certain range, and various products with different specifications and strength can be produced simultaneously; besides, automatic water addition and automatic temperature control can be realized, so that the steel wires are quenched in the required quenching temperature range all the time, and the quenching effect of the steel wires is improved.

Description

technical field [0001] The invention relates to a steel wire water bath quenching unit, which is used for austempering steel wire. 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. After the steel wire is austenitized and heated at high temperat...

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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

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