GB1466737A - Heat-treatment for electric cables - Google Patents
Heat-treatment for electric cablesInfo
- Publication number
- GB1466737A GB1466737A GB1802074A GB1802074A GB1466737A GB 1466737 A GB1466737 A GB 1466737A GB 1802074 A GB1802074 A GB 1802074A GB 1802074 A GB1802074 A GB 1802074A GB 1466737 A GB1466737 A GB 1466737A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cable
- core
- sheath
- temperature
- muffle
- 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
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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
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)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
1466737 Making electrical cable; drawing LES CABLES DE LYON 24 April 1974 [25 April 1973] 18020/74 Headings B3A and B3P [Also in Division C7] A method of making an electrical cable 1 formed of a conductive core, a layer of insulating mineral material around the core and an external sheath of iron alloy, comprises subjecting the cable to successive steps of annealing the sheath at a first temperature, annealing the core at a second temperature lower than the first and tempering the sheath and core. In between drawing stages the cable 1 passes into a furnace 2, which comprises a muffle 7 surrounded by an induction heater 8, where the temperature of the sheath, which is of stainless steel, is quickly raised to 900-1000 C. while the insulating material keeps the core temperature down to about 300 C. as the cable leaves the furnace. The cable then enters a muffle 11 where the sheath temperature falls slowly as it heats the core, which reaches 600 C. as the cable emerges from the muffle. A reducing gas is fed through a tube 12 into the muffles 11, 7 and it is burnt where it leaves the latter. The cable then enters a tempering enclosure 4 where the sheath temperature falls rapidly while that of the core falls more slowly. An ejector is fitted to each end of the enclosure 4 to provide a controlled flow of coolant, which enters through pipes 13, 14 and leaves the housing through a pipe 15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7314975A FR2227332B1 (en) | 1973-04-25 | 1973-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1466737A true GB1466737A (en) | 1977-03-09 |
Family
ID=9118475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1802074A Expired GB1466737A (en) | 1973-04-25 | 1974-04-24 | Heat-treatment for electric cables |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3904444A (en) |
| CA (1) | CA1023248A (en) |
| FR (1) | FR2227332B1 (en) |
| GB (1) | GB1466737A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2714019C3 (en) * | 1977-03-30 | 1980-08-07 | Schloemann-Siemag Ag, 4000 Duesseldorf | Device for cooling wire rod running at high speed through guide tubes |
| IT1148784B (en) * | 1980-04-09 | 1986-12-03 | Eurand Spa | PROCEDURE FOR THE PREPARATION OF MICRO CAPSULES IN A LIQUID VEHICLE |
| FR2503187A1 (en) * | 1981-03-31 | 1982-10-08 | Cables De Lyon Geoffroy Delore | METHOD AND DEVICE FOR ANNEALING AND SCRAPING FOR EXTENDED METAL ELEMENTS INTO FINE OR SPECIAL STEELS |
| US4894239A (en) * | 1987-06-02 | 1990-01-16 | Takeda Chemical Industries, Ltd. | Sustained-release preparation and production thereof |
| US4898734A (en) * | 1988-02-29 | 1990-02-06 | Massachusetts Institute Of Technology | Polymer composite for controlled release or membrane formation |
| US5364634A (en) * | 1991-11-08 | 1994-11-15 | Southwest Research Institute | Controlled-release PH sensitive capsule and adhesive system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406058A (en) * | 1966-07-11 | 1968-10-15 | Molecu Wire Corp | Nickel base alloys and electrical resistance wire made therefrom |
| US3499804A (en) * | 1966-11-07 | 1970-03-10 | Texas Instruments Inc | Heat treatment of clad wire or the like |
| US3828296A (en) * | 1970-07-21 | 1974-08-06 | Int Nickel Co | Sheathed electric heater elements |
-
1973
- 1973-04-25 FR FR7314975A patent/FR2227332B1/fr not_active Expired
-
1974
- 1974-04-10 CA CA198,156A patent/CA1023248A/en not_active Expired
- 1974-04-23 US US463238A patent/US3904444A/en not_active Expired - Lifetime
- 1974-04-24 GB GB1802074A patent/GB1466737A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1023248A (en) | 1977-12-27 |
| FR2227332A1 (en) | 1974-11-22 |
| US3904444A (en) | 1975-09-09 |
| FR2227332B1 (en) | 1976-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |