GB798656A - Pneumatic or hydraulic stowing pipes - Google Patents
Pneumatic or hydraulic stowing pipesInfo
- Publication number
- GB798656A GB798656A GB16171/56A GB1617156A GB798656A GB 798656 A GB798656 A GB 798656A GB 16171/56 A GB16171/56 A GB 16171/56A GB 1617156 A GB1617156 A GB 1617156A GB 798656 A GB798656 A GB 798656A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- hardening temperature
- pipes
- pneumatic
- pipe
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
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 Articles (AREA)
Abstract
A process for the production of pneumatic or hydraulic pipes comprises heating the pipes by an external burner to a temperature close to but below the hardening temperature and then heating the inner surface above the hardening temperature and quenching, the outer surface being maintained below the hardening temperature during the heating of the inner surface to hardening temperature. During the final heating of the inner surface, which may be performed by a burner followed by a quenching device, the outer surface may be subjected to an air blast or to an air blast and a spray of water, the latter moving relatively to the pipe to form a helical or zig-zag pattern of material having a greater depth of softness than the remainder of the material. The pipe or the cooling device may be given a rotary or an oscillatory movement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE798656X | 1955-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB798656A true GB798656A (en) | 1958-07-23 |
Family
ID=6711450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16171/56A Expired GB798656A (en) | 1955-09-19 | 1956-05-24 | Pneumatic or hydraulic stowing pipes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB798656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437503A1 (en) * | 1978-09-26 | 1980-04-25 | Usui Kokusai Sangyo Kk | TUBULAR PIPING FOR HIGH-PRESSURE FUEL INJECTION AND METHOD OF MANUFACTURING THE SAME |
-
1956
- 1956-05-24 GB GB16171/56A patent/GB798656A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437503A1 (en) * | 1978-09-26 | 1980-04-25 | Usui Kokusai Sangyo Kk | TUBULAR PIPING FOR HIGH-PRESSURE FUEL INJECTION AND METHOD OF MANUFACTURING THE SAME |
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