FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, and in particular to methods for smelting nickel-based alloys with a high tungsten content (more than 14%), intended for the manufacture of parts used in aviation and other industries. Smelting method for KhN33KV alloy includes preparation of charge materials, filling formation, smelting of branded alloy, its subsequent oxygen blowing and refining. When preparing charge materials, preliminary smelting is carried out in an open induction furnace and casting into ingots of nickel-tungsten-chromium ligature with a tungsten content of 20-30 wt.% and chromium 20-25 wt.% using electrolytic nickel, metallic chromium and up to 30% of filling weight of tungsten chips. The smelted ligature in an amount of up to 50% of the charge weight is used for smelting a grade alloy in a vacuum induction furnace in the composition of charge materials in the form of cobalt, molybdenum, niobium, chromium, nickel and microadditives.
EFFECT: requirements for the chemical composition of the melted alloy are met, segregation of tungsten is excluded.
4 cl, 2 tbl, 1 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR SMELTING HIGH-CHROMIUM NICKEL ALLOY OF EP648-VI GRADE | 2020 |
|
RU2749409C1 |
METHOD OF SEMI-FINISHED PRODUCTS PRODUCTION FROM HEAT-RESISTANT ALLOY H25N45V30 | 2019 |
|
RU2719051C1 |
METHOD OF PRODUCING HIGH-PRECISION ALLOY 42HNM (EP630Y) ON NICKEL BASIS | 2018 |
|
RU2699887C1 |
METHOD FOR PRODUCTION OF CORROSION-RESISTANT NICKEL-BASED HN63MB ALLOY WITH CARBON CONTENT BELOW 0.005% | 2019 |
|
RU2749406C1 |
METHOD OF PRODUCING HEAT-RESISTANT SUPERALLOY HN62BMKTYU ON NICKEL BASED | 2017 |
|
RU2672651C1 |
METHOD OF RECOVERY AND ACTIVATION OF SUBSTANDARD WASTE FOR NICKEL-BASED ALLOYS | 2017 |
|
RU2672609C1 |
METHOD OF OBTAINING HIGH-ALLOY HEAT RESISTANT ALLOYS ON NICKEL BASE WITH TITANIUM AND ALUMINIUM CONTENT IN NARROW RANGE | 2019 |
|
RU2716326C1 |
METHOD FOR SMELTING HEAT-RESISTANT COPPER BASE ALLOYS | 2023 |
|
RU2807237C1 |
METHOD OF PRODUCING CHROMIUM BRONZE | 2020 |
|
RU2731540C1 |
METHOD FOR PREPARING METALLOTHERMIC MELT FOR PREPARATION OF MASTER ALLOY CONTAINING MOLYBDENIUM AND TUNGSTEN | 0 |
|
SU1129262A1 |
Authors
Dates
2022-10-24—Published
2022-02-09—Filed