Carbonitriding contributes to the improvement of strength characteristics of various machine steel parts, including automotive components!
We would like to introduce our heat treatment process of "gas carburizing and carburizing nitriding." "Gas carburizing" involves heating steel materials to approximately 900 to 940°C in an atmosphere of endothermic gas primarily composed of CO, N2, and H2, with the addition of enriching gases such as butane and propane, allowing carbon to penetrate the surface of the material. This is followed by quenching to harden the material. On the other hand, "carburizing nitriding" is a process where carbon and nitrogen are simultaneously penetrated into the surface of steel at a lower temperature of approximately 800 to 880°C compared to standard gas carburizing, followed by quenching to harden the material. 【Characteristics of Gas Carburizing】 ■ Applicable steel types: Low carbon alloy steels such as skin-hardening steels (SCM, SCr, SNCM, etc.) ■ Achieves a thick surface hardening layer while ensuring high toughness internally ■ Depth of hardening layer and surface hardness can be adjusted according to requirements ■ Several types of quenching oils can be selected based on internal hardness and component shape ■ The surface has a smooth finish with a light gray color (in the case of low-temperature tempering) ■ Improves wear resistance, impact strength, and fatigue strength *For more details, please download the PDF or feel free to contact us.
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**Characteristics of Carburizing and Nitriding** ■ Applicable steel types: Low carbon steel (low carbon steels such as SP, SS, S10C), case-hardened steel (low carbon alloy steels such as SCM, SCr, SNCM) ■ Allows quenching at lower temperatures, reducing quenching distortion (excluding case-hardened steel) ■ Improved hardenability due to the influence of nitrogen, making quenching easier even for carbon steel, which is advantageous in terms of cracking resistance ■ Compared to gas carburizing, the abnormal hardened layer at the surface is suppressed, resulting in a uniform hardened layer ■ Compared to gas carburizing, tempering softening resistance is improved *For more details, please download the PDF or feel free to contact us.*
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【Specific Product Examples】 ■ Mechanical parts focused on power units such as engines, transmissions, and differentials in transportation machinery - Connecting rods, crankshafts, transmission gears/shafts, CVT pulley shafts, drive shafts, constant velocity joint parts, final gears, differential side gears, etc. *For more details, please download the PDF or feel free to contact us.
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Since our establishment, we have been firmly established as a heat treatment manufacturer for half a century. In particular, over 70% of our employees are certified metal heat treatment technicians, and our group of engineers has built equipment and quality management systems based on our unique know-how, which has received high praise from our customers. We directly supply heat-treated products to the production lines of world-renowned automobile manufacturers and parts manufacturers. As professionals in heat treatment processing, we will produce the most suitable heat treatment for your products, so please feel free to contact us with your requests.