Title:
SUPERHARD ALLOY AND MOLD
Document Type and Number:
WIPO Patent Application WO/2022/208766
Kind Code:
A1
Abstract:
A superhard alloy including a hard phase with WC as a main component and a binding phase with Co as a main component, wherein the hard phase has coarse WC particles having a particle size of 1.6 or more to less than 6.0 μm and fine WC particles having a particle size of less than 1.6 μm, the area ratio of the coarse WC particles is 20-35% by area of the total WC, the area ratio of the fine WC particles is 65-80% area of the total WC, the content X of the binding phase is 10-15% by mass of the whole superhard alloy, the average particle size of the coarse WC particles is within the range of 2 μm or more and less than 4 μm, and the average particle size Y of the fine WC particles satisfies the following formula (1): -0.065X + 1.20 ≤ Y ≤ -0.065X + 1.70.
Inventors:
AOYAGI SHOTA (JP)
OGURA TSUTOMU (JP)
OGURA TSUTOMU (JP)
Application Number:
PCT/JP2021/013918
Publication Date:
October 06, 2022
Filing Date:
March 31, 2021
Export Citation:
Assignee:
FUJI DIE CO (JP)
International Classes:
C22C29/02
Domestic Patent References:
| WO2018180911A1 | 2018-10-04 |
Foreign References:
| JP2004330314A | 2004-11-25 | |||
| JPH07252579A | 1995-10-03 |
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
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