Method for monitoring heat treatment temperature of power-up steel wire

Abstract

The invention relates to a method for monitoring the heat treatment temperature of a power-up steel wire. The method comprises the following steps of: when the steel wire moves and passes through a carrier roller to enter a lead bath groove, performing lead bath treatment, and allowing the steel wire to pass through the carrier roller and enter the lead bath groove to perform the lead bath treatment after the steel wire reaches a preset temperature at the heating stage; at the heating stage, collecting a temperature signal of the movable steel wire by using an infrared thermal imaging system, and transferring the signal to a programmable controller by communication; comparing the temperature of the steel wire with the preset temperature by using the programmable controller, and calculating to obtain direct-current voltage of a direct-current power supply; and regulating the direct-current voltage to regulate energized current on the steel wire to control the heating temperature of the steel wire, so that the steel wire reaches the preset temperature at the heating stage. Due to the adoption of the monitoring method, the heating temperature of the steel wire can be controlled accurately to ensure the heat treatment quality of the steel wire. In addition, the monitoring method is easy and convenient to operate, the yield of machined products is high, and the production efficiency is improved greatly.

Description

technical field [0001] The invention belongs to the field of steel strand rope manufacturing, and in particular relates to a card electric type steel wire heat treatment temperature monitoring method. Background technique [0002] Card electric steel wire heat treatment is a method of heat treatment of steel wire by means of electric heating. The process is to heat the steel wire with direct current, and then quench it in a lead bath. Carry out card electric heat treatment for steel wire, the heating temperature of steel wire must reach above 900 ℃, the steel wire keeps moving during the heat treatment process, but it is difficult to measure the temperature of such a high temperature moving object, so the biggest difficulty of card electric heat treatment is Monitoring and detection of steel wire heating temperature. Temperature detection is divided into two types: contact type and non-contact type. Contact type temperature measurement can achieve high temperature measureme...

AI Technical Summary

Problems solved by technology

The existing temperature control method is relatively backward, relying on the experience of the operator to determine the heating temperature of the steel wire by visually observing the brightness of the steel wire after heating, and artificially adjusting the energizing current of the steel wire to change the heating temperature of the steel wire

Therefore, the human factor of the existing method is very large, and the senses are different due to different operators, and the error of the heating temperature of the steel wire is relatively large, which has a great influence on the quality of heat treatment.

In the past, the steel wire temperature was measured with a colorimetric thermometer, and then the steel wire energized current was manually adjusted to control the heating temperature. Due to the difference in human senses and the measurement error of the thermometer itself, the control error of the steel wire temperature was relatively large.

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