GB1192799A - Process for Heat Treating Steel Wire or Rod - Google Patents
Process for Heat Treating Steel Wire or RodInfo
- Publication number
- GB1192799A GB1192799A GB42975/67A GB4297567A GB1192799A GB 1192799 A GB1192799 A GB 1192799A GB 42975/67 A GB42975/67 A GB 42975/67A GB 4297567 A GB4297567 A GB 4297567A GB 1192799 A GB1192799 A GB 1192799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- work
- steel
- max
- rod
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 abstract 5
- 239000010959 steel Substances 0.000 abstract 5
- 238000010438 heat treatment Methods 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 230000009466 transformation Effects 0.000 abstract 2
- 229910001152 Bi alloy Inorganic materials 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 229910001563 bainite Inorganic materials 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000005261 decarburization Methods 0.000 abstract 1
- 230000005496 eutectics Effects 0.000 abstract 1
- 150000001247 metal acetylides Chemical class 0.000 abstract 1
- 229910001562 pearlite Inorganic materials 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
1,192,799. Heat-treating steel wire or rod. UNITED STATES STEEL CORP. Sept. 21, 1967 [Sept. 27, 1966], No.42975/67. Headings C7A and C7N. Steel wire or rod is subjected to a continuous patenting heat treatment by heating the work in a furnace e.g. containing tubes through which the wire travels to above the steel's upper critical temperature, e.g. to 1600 F. in an atmosphere of cracked ammonia to prevent decarburization, then passing it from the furnace without air cooling into a first cascade chamber to quench the work by a liquid medium to below the Ar temperature zone e.g. 400-700F. to suppress the formation of pro-eutectoid carbides and ferrite, then into a second cascade chamber to reheat the work by a liquid medium to 750-1050F. to obtain isothermal transformation to upper bainite and fine pearlite structures. The cascade chambers preferably comprise vigorously agitated quenchant, e.g. NaNO 3 -NaNO 2 eutectic or Pb-Bi alloy, which is pumped from a reservoir up into a tray disposed above where it overflows back into the reservoir. The work may be passed from the second cascade chamber into a holding furnace maintained at the same temperature to complete transformation. The heat treatment may be repeated with intermediate cooling to room temperature and drawing. The wire may be given a copper coating prior to drawing to final gauge. The wire may be of highereutectoid steel containing 0À9-1% of C, max. 0À005% each of P and S, max. 0À1% Si and max. 0À002%N.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58659666A | 1966-09-27 | 1966-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1192799A true GB1192799A (en) | 1970-05-20 |
Family
ID=24346384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42975/67A Expired GB1192799A (en) | 1966-09-27 | 1967-09-21 | Process for Heat Treating Steel Wire or Rod |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3458365A (en) |
| BE (1) | BE704256A (en) |
| DE (1) | DE1583419B2 (en) |
| ES (1) | ES345437A1 (en) |
| GB (1) | GB1192799A (en) |
| LU (1) | LU54544A1 (en) |
| NL (1) | NL159438B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2852422A (en) * | 1953-07-08 | 1958-09-16 | Selas Corp Of America | Method of heat treating metal objects |
-
1966
- 1966-09-27 US US586596A patent/US3458365A/en not_active Expired - Lifetime
-
1967
- 1967-09-21 GB GB42975/67A patent/GB1192799A/en not_active Expired
- 1967-09-25 ES ES345437A patent/ES345437A1/en not_active Expired
- 1967-09-25 DE DE1967U0014258 patent/DE1583419B2/en active Granted
- 1967-09-25 BE BE704256D patent/BE704256A/xx unknown
- 1967-09-27 LU LU54544D patent/LU54544A1/xx unknown
- 1967-09-27 NL NL6713164.A patent/NL159438B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3458365A (en) | 1969-07-29 |
| DE1583419A1 (en) | 1970-11-05 |
| NL159438B (en) | 1979-02-15 |
| BE704256A (en) | 1968-03-25 |
| DE1583419B2 (en) | 1977-03-03 |
| LU54544A1 (en) | 1967-11-27 |
| NL6713164A (en) | 1968-03-28 |
| ES345437A1 (en) | 1968-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |