High strength and wear resistance required! A case study of processing that achieved high toughness through tempering.
We would like to introduce a case study of processing crankshafts for agricultural machinery engines at our company. In the heat treatment of the shafts, we first perform carburizing and high-frequency quenching. By heating the workpiece to a high temperature and then rapidly cooling it, we can increase its hardness. While quenching increases hardness, it also has the disadvantage of making the material brittle. Therefore, we perform tempering to enhance toughness (ductility). By heating the workpiece at a temperature lower than the quenching temperature and holding it for a certain period before slowly cooling it, we can achieve high toughness. 【Case Overview】 ■ Product Category: Crankshaft ■ Delivery Industry: Outdoor Machinery Manufacturer ■ Application: Small Outdoor Machinery ■ Material: SCM415 ■ Size: L66mm (Flange: φ55mm) × φ12 × φ10 *For more details, please refer to the PDF document or feel free to contact us.
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【Processing Details】 ■ After rough material shaping by cold forging - Center hole processing - Outer diameter and thread turning - Drilling - Outer diameter grinding - Hole finishing - Inspection - Shipping packaging * For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Toyo Manufacturing Co., Ltd. is a metal processing company headquartered in Fuchu City, Tokyo, with a group company, Toyo Kyushu Co., Ltd., located in Bungo-Takada City, Oita Prefecture. Currently, we mainly engage in the manufacturing and sales of automotive parts (including critical safety components) and agricultural machinery parts. We excel in mass production but also accommodate prototypes, especially in pre-mass production prototypes, where we propose value engineering (VE) with an eye toward mass production. 【Main Products】 Stub shafts (automotive parts), drive shafts (automotive parts), balance shafts (automotive parts), crankshafts (outdoor machinery parts), drive pinions (automotive parts), motor shafts (automotive parts), etc. 【Certifications Obtained】 Quality Management System: ISO 9001:2015 Environmental Management System: KES Step 2 【Awards and Achievements】 2005 Tokyo Small and Medium Enterprises Manufacturing Human Resource Development Award (A recognition system for small and medium enterprises that have achieved results in the development of excellent skilled workers and the inheritance of skills, as recognized by Tokyo Metropolitan Government) 2022 Minister of Health, Labour and Welfare Award for Excellent Business in Skill Promotion (A recognition for establishments and organizations that have made significant contributions to skill promotion over many years and serve as models for others.)