JPS6442534A - Method for denitriding ni-base super alloy - Google Patents

Method for denitriding ni-base super alloy

Info

Publication number
JPS6442534A
JPS6442534A JP19742887A JP19742887A JPS6442534A JP S6442534 A JPS6442534 A JP S6442534A JP 19742887 A JP19742887 A JP 19742887A JP 19742887 A JP19742887 A JP 19742887A JP S6442534 A JPS6442534 A JP S6442534A
Authority
JP
Japan
Prior art keywords
super alloy
base super
slag
oxides
denitriding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP19742887A
Other languages
Japanese (ja)
Other versions
JP2576522B2 (en
Inventor
Toru Degawa
Hideaki Suito
Akira Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP62197428A priority Critical patent/JP2576522B2/en
Publication of JPS6442534A publication Critical patent/JPS6442534A/en
Application granted granted Critical
Publication of JP2576522B2 publication Critical patent/JP2576522B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To surely and easily carry out the denitriding treatment of an Ni-base super alloy, by using slag containing specific amounts of Al2O3, oxides of alkaline earth metals, titanium oxide, ZrO2, etc. CONSTITUTION:Slag containing, by weight, 15-70% Al2O3, 20-82% oxides of alkaline earth metals, and 0-40% of one or more kinds selected from titanium oxide, ZrO2, and oxides of rare-earth elements is prepared. Denitriding treatment is carried out by refining an Ni-base super alloy containing Al and Ti by using the above slag. It is preferable to carry out refining in an inert gas, such as Ar, or in vacuum. By this method, the high-cleanliness Ni-base super alloy reduced in N content can be obtained. Further, when CaF2 and CaCl2 are incorporated by <=about 30% to the slag, a m.p.-depressing effect can be provided.
JP62197428A 1987-08-07 1987-08-07 Method for denitrification of Ni-base superalloy Expired - Lifetime JP2576522B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197428A JP2576522B2 (en) 1987-08-07 1987-08-07 Method for denitrification of Ni-base superalloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197428A JP2576522B2 (en) 1987-08-07 1987-08-07 Method for denitrification of Ni-base superalloy

Publications (2)

Publication Number Publication Date
JPS6442534A true JPS6442534A (en) 1989-02-14
JP2576522B2 JP2576522B2 (en) 1997-01-29

Family

ID=16374355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197428A Expired - Lifetime JP2576522B2 (en) 1987-08-07 1987-08-07 Method for denitrification of Ni-base superalloy

Country Status (1)

Country Link
JP (1) JP2576522B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167730A (en) * 1984-09-11 1986-04-07 Mitsui Eng & Shipbuild Co Ltd Production of ni-base super alloy
JPS61243134A (en) * 1985-04-19 1986-10-29 Mitsui Eng & Shipbuild Co Ltd Production of extra-low sulfur alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167730A (en) * 1984-09-11 1986-04-07 Mitsui Eng & Shipbuild Co Ltd Production of ni-base super alloy
JPS61243134A (en) * 1985-04-19 1986-10-29 Mitsui Eng & Shipbuild Co Ltd Production of extra-low sulfur alloy

Also Published As

Publication number Publication date
JP2576522B2 (en) 1997-01-29

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