Steel material and mold
US-2024133005-A1 · Apr 25, 2024 · US
Method for manufacturing base material for wave gear
US8940109B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940109-B2 |
| Application number | US-201113634695-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2011 |
| Priority date | Mar 30, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A method for manufacturing a base material for a wave gear which enables the effective suppression of man-hours and manufacturing cost while providing the required strength and elastic deformation characteristics for an external gear of a wave gear. In this manufacturing method, steel having a carbon content of 0.48% or less is subjected to primary molding by being cold worked into the shape of an external gear for a wave gear. The resulting primary molded article is heated to a temperature range in which the main phase of the metallographic structure thereof forms an austenitic structure. The main phase of the metallographic structure is formed into bainite by carrying out quenching to a predetermined temperature higher than the martensitic transformation starting temperature and maintaining the temperature for a predetermined time. The product is then cooled to normal temperature.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing a base material for a wave gear comprising: subjecting steel having a carbon content of 0.5 weight % or less to primary molding by cold working into the shape of an external gear for a wave gear; heating the resulting primary molded article to a temperature range in which the main phase of the metallographic structure thereof forms an austenitic structure; rapid cooling to a predetermined temperature higher than a martens…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C21D1/32Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8940109B2 cover?
- A method for manufacturing a base material for a wave gear which enables the effective suppression of man-hours and manufacturing cost while providing the required strength and elastic deformation characteristics for an external gear of a wave gear. In this manufacturing method, steel having a carbon content of 0.48% or less is subjected to primary molding by being cold worked into the shape of…
- Who is the assignee on this patent?
- Nagata Eiri, Kurita Nobuaki, Aisin Seiki
- What technology area does this patent fall under?
- Primary CPC classification C21D1/32. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).