GB1396700A - Heat treatment of springs - Google Patents
Heat treatment of springsInfo
- Publication number
- GB1396700A GB1396700A GB1631572A GB1631572A GB1396700A GB 1396700 A GB1396700 A GB 1396700A GB 1631572 A GB1631572 A GB 1631572A GB 1631572 A GB1631572 A GB 1631572A GB 1396700 A GB1396700 A GB 1396700A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- heat treatment
- springs
- heated
- heating
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
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)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
1396700 Heat treatment furnaces; walls BRITISH UNITED SHOE MACHINERY CO Ltd 19 June 1972 [19 June 1971 8 April 1972] 28855/71 and 16315/72 Heading F4B [Also in Division C7] Springs are heat-treated by conveying them along a cylindrical chamber around which are located radiant heating units, the chamber preferably comprising two or more zones, in the first of which the spring is rapidly heated to a temperature near to that desired, followed by slower heating in a second zone to final temperature. Suitable apparatus includes a pair of belt conveyers 114 extending through a cylindrical chamber 112 heated by three groups each of four units 130 controlled by thermocouples. The chamber is enclosed in an outer housing 131 packed with thermal insulation. In a further embodiment the heating chamber is formed by cast refractory blocks 138 having dovetail channels 140 in which are mounted arcuate heating elements 142. Typically springs are heated to 260‹ C. to relieve stresses introduced during cooling, the heat treatment apparatus being incorporated in an automatic production line.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1631572A GB1396700A (en) | 1971-06-19 | 1972-04-08 | Heat treatment of springs |
| IT2577072A IT960691B (en) | 1971-06-19 | 1972-06-16 | HOT TREATMENT OF SPRINGS AND EQUIPMENT FOR THE REALIZATION OF THIS TREATMENT |
| DE19722229837 DE2229837A1 (en) | 1971-06-19 | 1972-06-19 | Heat treatment device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2885571 | 1971-06-19 | ||
| GB1631572A GB1396700A (en) | 1971-06-19 | 1972-04-08 | Heat treatment of springs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1396700A true GB1396700A (en) | 1975-06-04 |
Family
ID=26251963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1631572A Expired GB1396700A (en) | 1971-06-19 | 1972-04-08 | Heat treatment of springs |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2229837A1 (en) |
| GB (1) | GB1396700A (en) |
| IT (1) | IT960691B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8000899L (en) * | 1979-02-07 | 1980-08-08 | Micropore International Ltd | FORMULATION OF SPIRALS |
-
1972
- 1972-04-08 GB GB1631572A patent/GB1396700A/en not_active Expired
- 1972-06-16 IT IT2577072A patent/IT960691B/en active
- 1972-06-19 DE DE19722229837 patent/DE2229837A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2229837A1 (en) | 1972-12-21 |
| IT960691B (en) | 1973-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |