Differential apparatus component, differential apparatus therewith and manufacturing method thereof
AssigneeAisin Takaoka Co., Ltd.
InventorsZhong-zhi ZHANG, Huaisheng DAI, Tomohiro YAMAGUCHI
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Abstract
In a differential apparatus component (ring gear-integrated with differential case 12), a differential case and a ring gear are formed integrally and seamlessly of cast steel. Cast Steel is preferably composed of 0.3 to 1.0% by mass of silicon (Si), 0.5 to 1.2% by mass of manganese (Mn), 0.1 to 0.5% by mass of vanadium (V), 0.01 to 0.05% by mass of tin (Sn), 0.1 to 1.5% by mass of chromium (Cr), 0.2 to 1.0% by mass of copper (Cu), and the rest composed of iron (Fe) and unavoidable impurities.
Claims17
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A differential apparatus component, comprising:
- a differential case configured to accommodate a differential gear mechanism;
- a ring gear provided so as to rotate integrally with the differential case;
- and
- the differential case and the ring gear being formed integrally and seamlessly of cast steel, the cast steel including 0.3 to 1.0% by mass of silicon (Si), 0.5 to 1.2% by mass of manganese (Mn), 0.1 to 0.5% by mass of vanadium (V), 0.01 to 0.05% by mass of tin (Sn), 0.1 to 1.5% by mass of chromium (Cr), 0.2 to 1.0% by mass of copper (Cu), and the rest composed of iron (Fe) and unavoidable impurities.
A manufacturing method of a differential apparatus component comprising:
- casting cast steel to form an integral and seamless casting for a differential apparatus component including a ring gear integrated with differential case;
- and
- the cast steel including 0.3 to 1.0% by mass of silicon (Si), 0.5 to 1.2% by mass of manganese (Mn), 0.1 to 0.5% by mass of vanadium (V), 0.01 to 0.05% by mass of tin (Sn), 0.1 to 1.5% by mass of chromium (Cr), 0.2 to 1.0% by mass of copper (Cu), and the rest composed of iron (Fe) and unavoidable impurities.
Dependencies are inferred from the claim text.