JPS5481157A - Manufacture of welded box-shaped steel - Google Patents
Manufacture of welded box-shaped steelInfo
- Publication number
- JPS5481157A JPS5481157A JP14971777A JP14971777A JPS5481157A JP S5481157 A JPS5481157 A JP S5481157A JP 14971777 A JP14971777 A JP 14971777A JP 14971777 A JP14971777 A JP 14971777A JP S5481157 A JPS5481157 A JP S5481157A
- Authority
- JP
- Japan
- Prior art keywords
- width
- channel steel
- flange
- steel
- channel
- 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 obtain welded box-shaped steel of large size with ease of welding by the procedure in which flange width is specifically defined for one of channel steels to be combined, the forming of channel section is finished prior to welding, and then at weld position, only channel steel of small flange width is bent at a specific angle.
CONSTITUTION: The width dimension of upper and lower steel belts drawn out of uncoiler is set up to a fixed dimentional difference (A) and then molded by turns into the following form by forming rolls (illustration is omitted) of plural tiers. Namely, the flange width Bu of the upper channel steel 1 is formed to less than 2 times the plate thickness t and the forming angle of flange and web is bent into 90°, the forming angle of final product. On the other hand, the width of the web of the lower channel steel is made to an extremely large width enought to supplement the shortage of flange width of the channel steel 1. Then, the both steels are combined at the weld position D and contacted against the squeeze roll 3 at the upper and lower positions of the weld point W. At this time, bending deformation is given to the channel steel 1 alone and a 2 to 7 deg V-shaped angle α is formed between it and the channel steel 2, where the weld point W is centered. Then, the upper and lower flange edges are welded.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14971777A JPS5481157A (en) | 1977-12-13 | 1977-12-13 | Manufacture of welded box-shaped steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14971777A JPS5481157A (en) | 1977-12-13 | 1977-12-13 | Manufacture of welded box-shaped steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5481157A true JPS5481157A (en) | 1979-06-28 |
Family
ID=15481273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14971777A Pending JPS5481157A (en) | 1977-12-13 | 1977-12-13 | Manufacture of welded box-shaped steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5481157A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919022A (en) * | 1982-07-23 | 1984-01-31 | Hitachi Zosen Corp | Continuous manufacturing method of square steel pipe |
JPS5924524A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
JPS5924521A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
JPS5924522A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5477268A (en) * | 1977-12-02 | 1979-06-20 | Sumitomo Heavy Ind Ltd | Continuous manufacture of welded angular steel tube |
-
1977
- 1977-12-13 JP JP14971777A patent/JPS5481157A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5477268A (en) * | 1977-12-02 | 1979-06-20 | Sumitomo Heavy Ind Ltd | Continuous manufacture of welded angular steel tube |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5919022A (en) * | 1982-07-23 | 1984-01-31 | Hitachi Zosen Corp | Continuous manufacturing method of square steel pipe |
JPS5924524A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
JPS5924521A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
JPS5924522A (en) * | 1982-07-30 | 1984-02-08 | Hitachi Zosen Corp | Continuous manufacture of square steel pipe |
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