End underframe for a railway vehicle made out of cold rolled austenitic stainless steel and corresponding production method
US-2018345999-A1 · Dec 6, 2018 · US
Repair method for cast steel member
US9962797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9962797-B2 |
| Application number | US-201415118499-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 13, 2014 |
| Priority date | Feb 13, 2014 |
| Publication date | May 8, 2018 |
| Grant date | May 8, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A repair method for repairing a crack generated to a cast steel member due to a thermal stress includes removing a part of the cast steel member including the crack at a surface of the cast steel member to form a recess, fitting into the recess a first repair member that is made of a metal that is more flexible than the cast steel member and that is weldable to the cast steel member, and spot welding the first repair member to the cast steel member.
First claim
Opening claim text (preview).
The invention claimed is: 1. A repair method for repairing a crack generated to a cast steel member due to a thermal stress, comprising: removing a part of the cast steel member including the crack at a surface of the cast steel member and forming a recess; fitting into the recess a first repair member that is made of a metal that is more flexible than the cast steel member and that is weldable to the cast steel member; spot welding the first repair member to the cast steel member; and welding a strip-form second repair member, made of a metal that is more flexible than the cast steel member and that is weldable to the cast steel member, to the cast steel member in a manner intersecting a lengthwise direction of the crack and spanning over the first repair member. 2. The method of repairing a cast steel member according to claim 1 , further comprising: spot welding the mounted second repair member and a main body of the cast steel member. 3. The method of repairing a cast steel member according to claim 1 , wherein the first repair member and the second repair member are made of a same material. 4. The method of repairing a cast steel member according to claim 3 , wherein the first repair member and the second repair member are metal members made of nickel that has a purity of 99.9% or greater.
Assignees
Inventors
Classifications
Repairing, retrofitting or upgrading methods · CPC title
Operations & Transport · mapped topic
of turbine components, e.g. moving or stationary blades, rotors, etc. · CPC title
in steam turbines · CPC title
- B23K9/007Primary
Spot arc welding · CPC title
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- What does patent US9962797B2 cover?
- A repair method for repairing a crack generated to a cast steel member due to a thermal stress includes removing a part of the cast steel member including the crack at a surface of the cast steel member to form a recess, fitting into the recess a first repair member that is made of a metal that is more flexible than the cast steel member and that is weldable to the cast steel member, and spot w…
- Who is the assignee on this patent?
- Chugoku Electric Power
- What technology area does this patent fall under?
- Primary CPC classification B23K9/007. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 08 2018 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).