Steel wire quenching heat treatment method

Abstract

The invention provides a steel wire quenching heat treatment method. In steel wire quenching equipment, the two sides of a conductive heating roller are provided with wire pressing rollers, tension between the steel wire and the conductive heating roller is increased, so that normal contact between the steel wire and the conductive rollers is ensured when the steel wire moves; at the same time, a certain amount of electrolyte is added into a water-bath groove, so that conductive performance of an aqueous solution is improved, and a sparking problem between the steel wire and the conductive heating roller is solved; polymeric additives with different molecular weight including acrylic acid, sodium nitrate, common salt and an emulsifier is also added into the water-bath groove, so that the generation of martensite is avoided when the steel wire passes through the water-bath groove in a low speed, and quenching effect of the steel wire is ensured; and metal pipes of pipe fittings are all connected to the ground, so as to ensure application safety, and preventing accidents from happening.

Description

1. Technical field [0001] The invention relates to heat treatment, in particular to a steel wire quenching heat treatment method. 2. Background technology [0002] Steel wire occupies a very important position in the national economy, and steel wire quenching heat treatment is a very important process in the production process of steel wire. In particular, the production of medium and high carbon steel wire is inseparable from heat treatment. [0003] There are many methods of steel wire quenching and heat treatment, and the method of quenching in hot-melt lead with muffle furnace heating has a history of one hundred years. Currently, this method still dominates the steel wire production industry. The advantage of this method is that the heating energy is large, the dv value can be very high, the output is high, the furnace body is long, the steel wire stays in the furnace for a long time, and the austenitization is sufficient. The disadvantage is that the local temperatu...

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Problems solved by technology

[0008] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a steel wire quenching heat treatment method, which can effectively solve the problem of high cost of steel wire heat treatment, steel wire and conductive There is sparking between the rollers, and martensite is generated when the steel wire passes through the water bath at low speed. The roller is compacted, and then passes through the first conductive roller, passes through the refractory insulation cover horizontally, passes through the parallel grounded idler roller on the same plane as the first conductive roller, and then is compressed by the second conductive roller and sprayed by the cold water pipe, and then enters In the two upper slots connected with the water bath above the water bath, the steel wire is quenched through the two upper slots for rapid cooling, wherein the first conductive roller and the second conductive roller are placed in parallel, and the first conductive roller is higher than The second conductive roller, the steel wire passes through the first conductive roller and the second conductive roller vertically, a heating power supply is installed between the first conductive roller and the second conductive roller, the steel wire is heated, and then quickly passes through the upper tank, in the water bath There is the same coolant as in the upper tank, and the steel wire is cooled quickly. The coolant is calculated by weight percentage: 97% water and 3% copper sulfate form the electrolyte, and then add the high weight of the electrolyte to the electrolyte. The molecular additive acrylic acid 5%, sodium nitrate 1%, sodium chloride 2%, OP-07 emulsifier 0.1% are stirred evenly, and the grounding protection casing, the cold water pipe and the water inlet pipe of the water bath are all made of grounded stainless steel Tube is made to ensure electrical grounding. The invention has simple equipment, scientific and advanced methods, low cost, and no environmental pollution. It effectively solves the problem of sparking between the steel wire and the conductive roller, and the generation of martensite when the steel wire passes through the water bath at low speed. Huge economic and social benefits

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