Heat treatment and rust and oil prevention method for surfaces of steel and iron parts

Abstract

The invention discloses a heat treatment and rust and oil prevention method for surfaces of steel and iron parts, and belongs to the technical field of steel and iron. Firstly, the quenching treatment is performed for the steel and iron parts; the rust and oil prevention treatment is performed after the pretreatment; and then, the electroplating treatment is performed, so that the rust and oil prevention time is longer, and the surfaces of steel and iron materials can be prevented from forming rust spots again; and an antirusting agent contains no phosphate, and contains no nitrite harmful to human bodies and environment, so that the discharge treatment of the antirusting agent is convenient, the environment is not polluted, the antirusting agent is green and environment-friendly, is suitable for the coating pretreatment of steel parts with various shapes and sizes, can enable the surfaces of steel products to have good wear resistance and improved corrosion resistance, and enable the heart parts to have high roughness, good flexibility and strong insulativity, high-temperature impact resistance and bending resistance, therefore, the service life of the steel products is largely prolonged, and the added value and the industrial benefit of the steel products are largely improved.

Description

technical field [0001] The invention relates to steel, and its anti-rust, anti-corrosion and anti-oil. Especially the surface heat treatment of iron parts and the anti-rust and anti-oil treatment methods. Background technique [0002] A single physical or chemical method is often used to remove rust on the surface of steel. In the past, sandblasting and strong acid pickling were mainly used for rust removal. Sandblasting rust removal requires large investment, high cost, high labor intensity, and pollutes the environment; and strong acid pickling is prone to over-corrosion, and secondary rust often occurs after pickling, and a large number of steel equipment is exposed to the air for a long time. It is corroded at a very fast speed; in some rust removal and anticorrosion methods, the rust removal solution used contains unstable sodium sulphate, so the stability of the rust removal solution is not high, and the rust removal speed is not fast; In addition, it is better to us...

AI Technical Summary

Problems solved by technology

Sandblasting rust removal requires large investment, high cost, high labor intensity, and pollutes the environment; and strong acid pickling is prone to over-corrosion, and secondary rust often occurs after pickling, and a large number of steel equipment is exposed to the air for a long time. It is corroded at a very fast speed; in some rust removal and anticorrosion methods, the rust removal solution used contains unstable sodium sulphate, so the stability of the rust removal solution is not high, and the rust removal speed is not fast; In addition, it is better to use methods such as cleaning and brushing to remove the rust on the metal surface, but it is not thorough to remove the oxide scale, especially it is more difficult to remove the dense oxide layer on the surface of new steel, the process is complicated and takes a long time, and temperature control is required , the treatment result is not ideal, and the oxide scale cannot be completely removed and cannot meet the required standards. In order to effectively remove the dense oxide layer of steel, currently large-scale components are treated by "sandblasting", but the investment in equipment, workshops, etc. requires hundreds of thousands. To one million and water, electricity, air compressors, laying air ducts. Erection of wires, so that the shape of sandblasting equipment. Spraying with quartz sand or even steel sand will cause serious air pollution, strict labor protection requirements, high cost and high labor intensity.