The pit type carburizing furnace is composed of furnace shell, furnace lining, furnace cover lifting mechanism, furnace sealing fan, muffle tank, heating element and electric control system.

The nitriding furnace is a surface nitriding furnace, and the surface nitriding makes the surface have a certain hardness. Nitriding furnace chemical heat treatment refers to a heat treatment process in which a metal or alloy workpiece is kept in an active medium at a certain temperature, so that one or several elements penetrate into its surface layer to change its chemical composition, structure and performance.

ROCHO offers a wide range of pit type electric resistance furnaces, hardening furnaces, annealing furnaces, tempering furnaces for various heat treatment applications, with high quality and and thermal efficiency. 

ROCHO provides the optimal processes and high-performance heat treatment equipment to meet the requirements of high efficiency, low consumption, light pollution and high automation.

ROCHO INDUCTION has designed a high-frequency induction quenching process suitable for automobile drive shaft flanges. Through the design of the inductor, the size of the gap, and the process parameters such as heating and cooling time, the drive shaft is induction quenched to improve its hardness, wear resistance and service life.

ROCHO INDUCTION offers coreless rolls induction heating quenching processes and roll quenching machines with high load capacity (workpiece weight up to several tens of tons, workpiece length up to 6 metres), mainly used for the surface quenching of heavy rolls and long thick shaft parts. The machine has manual-automatic operation and is suitable for the production of single and batch parts.