JPS55122604A - Preventing method for guide shoe flaw of seamless steel pipe - Google Patents
Preventing method for guide shoe flaw of seamless steel pipeInfo
- Publication number
- JPS55122604A JPS55122604A JP2953079A JP2953079A JPS55122604A JP S55122604 A JPS55122604 A JP S55122604A JP 2953079 A JP2953079 A JP 2953079A JP 2953079 A JP2953079 A JP 2953079A JP S55122604 A JPS55122604 A JP S55122604A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- blanc
- guide shoe
- roll
- flaw
- 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.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
PURPOSE: To remove the flaw made in a guide shoes during pipe manufacturing operation, by feeding sand-like granules between a round bar or pipe blanc and the surface of a guide shoe, which is in sliding contact with the round bar or pipe blanc.
CONSTITUTION: A pipe blanc HS is rotated around the axial line with its inner periphery controlled by a plug 13, with its right and left sides roll-pressed by barrel rolls 11, 12, and with its upper and lower sides controlled by guide shoes 14, 15. The pipe blanc HS is rolled in the direction of axis from the top in turn to the bottom. During the rolling of the pipe blanc HS, granulated sand 20 is dropped from a pipe 19 to the outer periphery of the roll 12, then to the contact surface 14a of the guide shoe 14 by the rotation of the roll 12. Hereby, the pipe blanc HS is prevented from slide contacting directly with the surface 14a, whereby the surface 14a is polished to remove flaws, e.g., cracks made therein by the rotation of the pipe blanc HS. Hence, formation of guide shoe flaws on the surface of the pipe blanc 1 HS is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54029530A JPS583444B2 (en) | 1979-03-13 | 1979-03-13 | How to prevent guide shoe defects on seamless steel pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54029530A JPS583444B2 (en) | 1979-03-13 | 1979-03-13 | How to prevent guide shoe defects on seamless steel pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55122604A true JPS55122604A (en) | 1980-09-20 |
| JPS583444B2 JPS583444B2 (en) | 1983-01-21 |
Family
ID=12278654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54029530A Expired JPS583444B2 (en) | 1979-03-13 | 1979-03-13 | How to prevent guide shoe defects on seamless steel pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS583444B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150357A (en) * | 1976-06-09 | 1977-12-14 | Nippon Steel Corp | Guide shoe anti burning method at mannesmann piercer |
| JPS52152857A (en) * | 1976-06-15 | 1977-12-19 | Nippon Steel Corp | Guide shoe cooling for mannesmann piercer |
-
1979
- 1979-03-13 JP JP54029530A patent/JPS583444B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150357A (en) * | 1976-06-09 | 1977-12-14 | Nippon Steel Corp | Guide shoe anti burning method at mannesmann piercer |
| JPS52152857A (en) * | 1976-06-15 | 1977-12-19 | Nippon Steel Corp | Guide shoe cooling for mannesmann piercer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS583444B2 (en) | 1983-01-21 |
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