Spring steel wire induction heating quenching machine tool for vehicle

With the development of my country’s automobile industry, the market demand for suspension spring steel wires, especially high-quality quenched and tempered steel wires, has increased sharply. In the past, it mainly relied on imports, which consumed a lot of foreign exchange.

The induction heating quenching equipment is a high-pressure and high-speed water jet quenching device that can harden 6-12 mm spring steel wires without cracking and the corresponding quenching process. The wire travel speed is 8-40 m/min, the surface hardness of the steel wire after quenching is HRC 62-64, the core hardness HRC is 60-62, and the grain size is 11-12. Grain and martensite refinement are the main reasons for the significant increase in the strength and plasticity of induction heating quenched and tempered steel. Its grain size is 11 to 14 grades, while furnace heating can only reach 7 to 10 grades.

Application of super audio frequency and intermediate frequency for continuous induction heating austenitization and water jet cooling and quenching. It is generally believed that when the mass fraction of carbon in the wire rod is greater than 0.3%, it is easy to be quenched by water spray cooling and quenching. Therefore, the main contradiction that the quenching process needs to solve is hardening and quenching cracking.

In the automotive industry, complete quenching and tempering solutions. Its independently developed and produced crankshaft quenching machine tools, vertical general-purpose quenching machine tools, brake shoe quenching machine tools, workpiece mobile quenching machine tools, inductor mobile quenching machine tools, three-column groove shell intelligent quenching/tempering equipment, bell shells/wheel hubs Bearing quenching/tempering equipment, automobile balance shaft multi-station quenching machine tools are widely used in many automobile manufacturers.