US1710846A - Refinement of nickel alloys - Google Patents
Refinement of nickel alloys Download PDFInfo
- Publication number
- US1710846A US1710846A US274959A US27495928A US1710846A US 1710846 A US1710846 A US 1710846A US 274959 A US274959 A US 274959A US 27495928 A US27495928 A US 27495928A US 1710846 A US1710846 A US 1710846A
- Authority
- US
- United States
- Prior art keywords
- refinement
- nickel alloys
- hydrogen
- slag
- nickel
- 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.)
- Expired - Lifetime
Links
- 229910000990 Ni alloy Inorganic materials 0.000 title description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 7
- 239000002893 slag Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
Definitions
- the charge consisting for example, of virgin metal with scrap or entirely of scrap is melted in the presence of a slag-and hydrogen or other reducing atmosphere.
- a suitable slag consists mainly of lime with silica, and a small amount of either fluo'rspar or calcium chloride may be used.
- the furnace is of the, induction type, using low, medium or high frequency.
- our invention We have slgned our-names this before a new slag is formed, a small amount 7 of an oxide of one of the constituents of the oxide of ironFe O or Fe O, -may be infurnace few minutes and then a new slag is formed from suitable materials, etc. ing.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Patented Apr. 30, 1929. p
, 1,710,846 UNITED STATES PATENT. OFFICE.
WILLOUGHBY sm'raan sm'rn, or remnants, HENRY Josnrn GARRETT, or
LYNNE, AND JOHN ANGEL HOLDEN, 0F SUNNYSIDE, ENGLAND.
anrmmnnr or NICKEL ALLpYs.
No Drawing. Application filed May 3, 1928, Serial No. 274,959, and iii Great Britaip April 25, 1927.
difficult to work' when they contain even a small percentage of sulphur;'amounts of as little as 03% in certain alloys are very injurious.
If pure virgin metals are melted into alloys in furnaces in which there isno contamination and the alloys are subsequently worked by ordinary commercial processes, contamination by sulphur is almost inevitable. Such operations as preheating for rolling or for forgingiin gas or coal fired furnaces lead to an absorption of sulphur, which is necessarily confined to the surface of the material. When the rolled or forged scrap is returned to the furnace for melting, a small increment of sulphur is made to the charge. During the course of time thisinorement becomes greater, till eventually the material contains so much impurity that it cannot be worked as perfectl'y as the pure alloy.
According to this invention the charge consisting for example, of virgin metal with scrap or entirely of scrap is melted in the presence of a slag-and hydrogen or other reducing atmosphere. A suitable slag consists mainly of lime with silica, and a small amount of either fluo'rspar or calcium chloride may be used. Preferably the furnace is of the, induction type, using low, medium or high frequency.
It has been found that fifteen minutes refining with a slag of the composition mentioned, in an atmosphere as described, will reduce the sulphur content'very considerably in an alloy containing of nickel. The hydrogen supply is then cut off and the slag removed from the surface of the metal, and
our invention We have slgned our-names this before a new slag is formed, a small amount 7 of an oxide of one of the constituents of the oxide of ironFe O or Fe O, -may be infurnace few minutes and then a new slag is formed from suitable materials, etc. ing.
It is possible however after removal of the hydrogen directly to teem the metal from such as broken glass, The molten metal is then ready. for pourthe crucible but if so it will be found that during freezing a large volume of hydrogenis evolved and in consequence the resulting ingots are honeycombed. 7 Even with the use of de-gasifying agents, such as manganese, magnesium, silicon and the like, the resulting bars are worthless. They can, nowevor, be remelted in .the ordinary way and made into sound workable ingots (becausethe hydrogen is expelled during freezing), but this is not so economical as the method described above.
Additions of a suitable finishing agent such asmagnesium are made in the usual manner.
Whatwe claim is i 1. A method for the refinement by minimizing the sulphur content of nickel alloys having a nickel content of 50% or more, which consists in melting the furnace charge in the presence of a slag and an atmosphere of hydrogen, and subsequently after removal of the reducing atmosphere adding an oxide of one of theconstituent metals to absorb the absorbed hydrogen. 2. 'A method for the refinement by minimizing the sulphur content of nickel alloys having a nickel content of 50% or more, which consists in melting the furnace charge in the presence of a slag and hydrogen, cutting off the supply of hydrogen after about fifteen minutes and. then adding a small amount of an oxide of one of the constituents of the alloy for removing the absorbed hydroen. b In testimony that we claim the foregoing as 18th 'day of April, 1928. WILLOUGHBY STATHAM SMITH. HENRY JOSEPH GARNETT. JOHN ANGEL HOLDEN.-
loo
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1710846X | 1927-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1710846A true US1710846A (en) | 1929-04-30 |
Family
ID=10888914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US274959A Expired - Lifetime US1710846A (en) | 1927-04-25 | 1928-05-03 | Refinement of nickel alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1710846A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485542A (en) * | 1945-01-25 | 1949-10-25 | Socony Vacuum Oil Co Inc | Protection of heat transfer media |
| US5344510A (en) * | 1993-04-14 | 1994-09-06 | United Technologies Corporation | Method for removing sulfur from superalloy articles to improve their oxidation resistance |
| US5346563A (en) * | 1991-11-25 | 1994-09-13 | United Technologies Corporation | Method for removing sulfur from superalloy articles to improve their oxidation resistance |
-
1928
- 1928-05-03 US US274959A patent/US1710846A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485542A (en) * | 1945-01-25 | 1949-10-25 | Socony Vacuum Oil Co Inc | Protection of heat transfer media |
| US5346563A (en) * | 1991-11-25 | 1994-09-13 | United Technologies Corporation | Method for removing sulfur from superalloy articles to improve their oxidation resistance |
| US5344510A (en) * | 1993-04-14 | 1994-09-06 | United Technologies Corporation | Method for removing sulfur from superalloy articles to improve their oxidation resistance |
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