JPS558350A - Method and apparatus for pre-cast forging of pipe material - Google Patents
Method and apparatus for pre-cast forging of pipe materialInfo
- Publication number
- JPS558350A JPS558350A JP8086778A JP8086778A JPS558350A JP S558350 A JPS558350 A JP S558350A JP 8086778 A JP8086778 A JP 8086778A JP 8086778 A JP8086778 A JP 8086778A JP S558350 A JPS558350 A JP S558350A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- section
- pair
- stocks
- 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.)
- Pending
Links
Abstract
PURPOSE: To continuously and readily produce pipe materials by rolling a pair of long-length stocks to semi-circular form in section in a half-molten state, then opposing these so as to assume pipe form then reheating the mating faces thereby pressure welding the same.
CONSTITUTION: A pair of pipe material inside forming rolls 7, 8 having outside protruding parts 9, 9 of semicircular shape in section are disposed to a pair of pipe form outside forming rolls 1, 2 having semicircular grooves 3, 4 on the outside circumference. A high frequency reheater 14 is disposed in the position where the grooves 3, 4 of the rolls 1, 2 approach. Round bar stocks having been heated to a half-molten state are fed into the grooves 3, 4 of the rolls 1, 2 and are rolled to semicircular form in section by the rolls 1, 7 and 2, 8, thence the edge parts 17 having become longer than the semicircle of the stock section are cut away with a cutter 18, whereby the stocks of semicircule in section are provided. Next, the mating faces of a pair of the abovementioned stocks being fed are heated with the reheater 14, after which they are pressure welded by the rolls 1, 2 to pipe form.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8086778A JPS558350A (en) | 1978-07-05 | 1978-07-05 | Method and apparatus for pre-cast forging of pipe material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8086778A JPS558350A (en) | 1978-07-05 | 1978-07-05 | Method and apparatus for pre-cast forging of pipe material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS558350A true JPS558350A (en) | 1980-01-21 |
Family
ID=13730285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8086778A Pending JPS558350A (en) | 1978-07-05 | 1978-07-05 | Method and apparatus for pre-cast forging of pipe material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558350A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037220A (en) * | 1983-08-11 | 1985-02-26 | Nippon Steel Corp | Manufacture of metallic pipe having wall-thickness difference in its longitudinal direction |
JPS60152319A (en) * | 1984-01-18 | 1985-08-10 | Nippon Steel Corp | Manufacture of metallic pipe having thickness difference in longitudinal direction of pipe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4940206A (en) * | 1972-08-26 | 1974-04-15 | ||
JPS5258016A (en) * | 1975-11-10 | 1977-05-13 | Noboru Hidaka | Spalling agent for slag ladle |
JPS5370993A (en) * | 1976-12-06 | 1978-06-23 | Nippon Steel Corp | Pouring method for hot molten slag into pan |
-
1978
- 1978-07-05 JP JP8086778A patent/JPS558350A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4940206A (en) * | 1972-08-26 | 1974-04-15 | ||
JPS5258016A (en) * | 1975-11-10 | 1977-05-13 | Noboru Hidaka | Spalling agent for slag ladle |
JPS5370993A (en) * | 1976-12-06 | 1978-06-23 | Nippon Steel Corp | Pouring method for hot molten slag into pan |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037220A (en) * | 1983-08-11 | 1985-02-26 | Nippon Steel Corp | Manufacture of metallic pipe having wall-thickness difference in its longitudinal direction |
JPS60152319A (en) * | 1984-01-18 | 1985-08-10 | Nippon Steel Corp | Manufacture of metallic pipe having thickness difference in longitudinal direction of pipe |
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