共和熱処理 List of Products and Services

Kyouwa Heat Treatment Co., Ltd. is a comprehensive metal heat treatment manufacturer. Kawaguchi Factory: Handling various machine parts, special steel materials, and cast steel products. Iwate Factory: Handling automotive and vehicle parts, construction machinery, and hydraulic components. We can deliver our specialized heat treatment technologies from Tohoku to Kanto, significantly reducing logistics costs. Additionally, we employ approximately 60 metal heat treatment technicians who accurately respond to high-level customer needs. 【Business Overview】 ■ General metal heat treatment processing of raw materials and heat treatment processing of finished products (Carburizing and quenching, tempering, nitriding, vacuum heat treatment, high-frequency quenching, etc.) 【Facilities】 ▼ Kawaguchi Factory ● No. 5 furnace ● 700t hydraulic press ● 100t crank press ● Turntable shot blast, etc. ▼ Iwate Factory ● Pit-type heat treatment furnace ● Vacuum furnace ● Unmanned heat treatment line ● Shot blast, etc. *For more details, please download the PDF or feel free to contact us.

At Kyowa Heat Treatment Co., Ltd., we perform "metal heat treatment using vacuum carburizing," which achieves stable surface hardness in a short time. In addition to improving product lifespan, we can also realize processing that is difficult with gas carburizing. This document includes a comparison of test results between carburized pure titanium and untreated samples. [Test Contents] ■ Pure titanium was cut, resin-embedded, polished to a mirror finish, and etched. → A 0.5% hydrofluoric acid solution was used to reveal the metal structure, which was then observed and photographed using a metallurgical microscope. ■ Pure titanium was subjected to ultrasonic cleaning with acetone before testing. → X-ray diffraction measurements were conducted using an X-ray diffraction device (XRD). *For more details, please refer to the PDF document or feel free to contact us.