Hearth roll and manufacturing method therefor
US-2016348971-A1 · Dec 1, 2016 · US
New process of manufacturing cemented carbide and a product obtained thereof
US2016115085A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016115085-A1 |
| Application number | US-201414894392-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 28, 2014 |
| Priority date | May 31, 2013 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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Abstract
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A process of manufacturing cemented carbide and to a product obtained thereof wherein hex doped WC is subjected to nitrogen before and/or during sintering.
First claim
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1 . A process of manufacturing a cemented carbide, said process comprising the steps of: a) forming a slurry including a milling liquid, binder metal and hard constituents, wherein said hard constituents include hex doped WC; b) subjecting said slurry to milling and drying to form a powder mixture; and c) subjecting the powder mixture to pressing and sintering, wherein the hex doped WC is subjected to nitrogen before and/or during sintering. 2 . The process of manufacturing a cemented carbide according to claim 1 , wherein the hex doped WC is subjected to nitrogen gas before sintering. 3 . The process of manufacturing a cemented carbide according to claim 1 , wherein the hex doped WC is subjected to nitrogen gas during sintering. 4 . The process of manufacturing a cemented carbide according to claim 1 , wherein the hex doped WC is doped with a transition metal selected from Ta, Nb, Cr and mixtures thereof. 5 . The process of manufacturing a cemented carbide according to claim 4 , wherein said transition metal is Ta and/or Cr. 6 . The process of manufacturing a cemented carbide according to claim 1 , wherein the binder metal is selected from the group of Cr, Mo, Fe, Co and Ni. 7 . The process of manufacturing a cemented carbide according to claim 1 , wherein said binder metal is Co. 8 . The process of manufacturing according to claim 1 , wherein said cemented carbide includes WC and hex doped WC in the range of from 65 to 90 wt %, Co in the range of from 3 to 15 wt % and Ta in the range of from 1 to 5 wt %. and Cr in the range of 0 to 20 wt % . 9 . A process of manufacturing of a cemented carbide cutting tool comprising the steps of: forming a slurry including a milling liquid, binder metal and hard constituents, wherein said hard constituents include hex doped WC; subjecting the slurry to milling and drying to form a powder mixture; and subjecting the powder mixture to pressing and sintering, wherein the hex doped WC is subjected to nitrogen before and/or during sintering. 10 . A cemented carbide obtainable according to the process of claim 1 . 11 . A cemented carbide according to claim 10 which, wherein the cemented carbide is a straight cemented carbide comprising hex doped WC. 12 . (canceled)
Assignees
Inventors
Classifications
comprising a particular metallic binder · CPC title
- C22C29/02Primary
based on carbides or carbonitrides · CPC title
- C04B35/5626Primary
based on tungsten carbides · CPC title
Cutting tools, earth boring or grinding tool other than table ware · CPC title
based on tungsten carbide · CPC title
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- What does patent US2016115085A1 cover?
- A process of manufacturing cemented carbide and to a product obtained thereof wherein hex doped WC is subjected to nitrogen before and/or during sintering.
- Who is the assignee on this patent?
- Sandvik Intellectual Property
- What technology area does this patent fall under?
- Primary CPC classification C22C29/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 28 2016 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).