A 20μ curing layer can be obtained with a 40-minute treatment! This is a processing method that can reduce operating costs.
"N-Hard (Gas Soft Nitriding)" is a treatment method where gas soft nitriding is performed just above the A1 transformation temperature on the Fe-N phase diagram, followed by rapid cooling to obtain a mixed phase of nitrides and nitrogen martensite. The surface forms an extremely hard layer compared to the nitrided layer, consisting of a mixed phase of nitrides (or carbonitrides) and nitrogen martensite. However, the interior undergoes rapid cooling below the A1 transformation of the Fe-C system, so it does not harden. 【Features】 ■ Thermal treatment distortion (dimensional change) is small, comparable to gas soft nitriding. ■ Hardness of HV800 or higher can be achieved even with low carbon steel, and HV1000 or higher with SK5. ■ Processing time is shorter compared to gas soft nitriding, achieving a hardened layer of 50μm in 90 minutes. ■ Processing time is short, achieving a hardened layer of 20μm in 40 minutes. ■ The finish is good. *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 ■ Nitrogen martensite can be obtained through oil cooling ■ Low-grade materials can be used as high-grade materials ■ Reduction of operating costs can be achieved *For more details, please refer to the PDF document or feel free to contact us.
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【Applications】 ■ Clutch plates, bearing holders, washers, knitting machine parts, sewing machine parts, automotive parts, pressed parts, fine blanking processed parts, etc. *For more details, please refer to the PDF document or feel free to contact us.
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Our company is a manufacturing group established by manufacturers of "surface modification," "rolling," "heat treatment," "precision processing," and "planning and design" from various regions in Japan. We mainly handle products such as sliding screws, rolled ball screws, support units, and actuators.