Presintered preform for repair of superalloy component
US-2015367456-A1 · Dec 24, 2015 · US
Method for manufacturing sintered component, sintered component, and drill
US2017320136A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017320136-A1 |
| Application number | US-201515535263-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 8, 2015 |
| Priority date | Dec 12, 2014 |
| Publication date | Nov 9, 2017 |
| Grant date | — |
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Abstract
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Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.
First claim
Opening claim text (preview).
1 . A method for manufacturing a sintered component, comprising: a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; and a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof. 2 . The method according to claim 1 , wherein the drill is configured so that a rake angle of the cutting edge is more than 0° and 10° or less. 3 . The method according to claim 1 , wherein the drill is configured so that a circular arc defining the cutting edge has a central angle of 135o or more and 180o or less. 4 . A sintered component having a hole formed therein, wherein an inner circumferential surface of the hole has a satin finish shape. 5 . The sintered component according to claim 4 , wherein a ten point medial height Rz of the inner circumferential surface of the hole is 20 μm or more. 6 . A drill for drilling a work material, wherein the work material is a powder-compact green body fabricated by press-molding a raw material powder containing a metal powder; wherein the drill has a circular arc-shaped cutting edge on a point portion thereof. 7 . The method according to claim 2 , wherein the drill is configured so that a circular arc defining the cutting edge has a central angle of 135° or more and 180° or less.
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- What does patent US2017320136A1 cover?
- Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a dri…
- Who is the assignee on this patent?
- Sumitomo Electric Sintered Alloy Ltd, Nikken Tool Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22F3/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Nov 09 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).