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Title:
POWDER FOR MOLD
Document Type and Number:
WIPO Patent Application WO/2019/188854
Kind Code:
A1
Abstract:
Provided is a powder for a mold, wherein solidification cracking is unlikely to occur even if the powder is used in a process accompanied by rapid melting and rapid solidification. This powder for the mold is made of an alloy. The alloy contains 0.25-0.45 mass% of C, 0.01-1.20 mass% of Si, more than 0 mass% but not more than 1.50 mass% of Mn, 2.0-5.5 mass% of Cr, and 0.2-2.1 mass% of V. The alloy further contains one or more of more than 0 mass% but not more than 3.0 mass% of Mo, more than 0 mass% but not more than 9.5 mass% of W, and more than 0 mass% but not more than 4.5 mass% of Co. The remaining part of the alloy is Fe and inevitable impurities. The alloy satisfies (Mn%)3/S%>6.7. The total content of P, S, and B is 0.020 mass% or lower.

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Inventors:
SAIMEN YUKA (JP)
Application Number:
PCT/JP2019/012270
Publication Date:
October 03, 2019
Filing Date:
March 22, 2019
Export Citation:
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Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
B22F1/052
Domestic Patent References:
WO2015110668A22015-07-30
WO2017109233A12017-06-29
WO2017111680A12017-06-29
WO2017111680A12017-06-29
Foreign References:
JP2017507251A2017-03-16
JP4661842B22011-03-30
JP2015209588A2015-11-24
EP2503016A12012-09-26
US20160348222A12016-12-01
EP3050649A12016-08-03
JP2015224363A2015-12-14
EP3050649A12016-08-03
Other References:
CASATI RICCARDO; CODURI MAURO; LECIS NORA; ANDRIANOPOLI CHIARA; VEDANI MAURIZIO: "Microstructure and mechanical behavior of hot-work tool steels processed by Selective Laser Melting", MATERIALS CHARACTERIZATION., ELSEVIER, NEW YORK, NY., US, vol. 137, 9 January 2018 (2018-01-09), US , pages 50 - 57, XP085349078, ISSN: 1044-5803, DOI: 10.1016/j.matchar.2018.01.015
See also references of EP 3778068A4
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
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