JPH0257454B2 - - Google Patents
Info
- Publication number
- JPH0257454B2 JPH0257454B2 JP25732087A JP25732087A JPH0257454B2 JP H0257454 B2 JPH0257454 B2 JP H0257454B2 JP 25732087 A JP25732087 A JP 25732087A JP 25732087 A JP25732087 A JP 25732087A JP H0257454 B2 JPH0257454 B2 JP H0257454B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- bending
- pipe
- layer
- inner tube
- 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
- 238000005452 bending Methods 0.000 claims description 49
- 239000012530 fluid Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims 1
- 230000006866 deterioration Effects 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002791 soaking Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/007—Layered blanks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25732087A JPH0199725A (ja) | 1987-10-14 | 1987-10-14 | 二層管の曲げ加工方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25732087A JPH0199725A (ja) | 1987-10-14 | 1987-10-14 | 二層管の曲げ加工方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199725A JPH0199725A (ja) | 1989-04-18 |
| JPH0257454B2 true JPH0257454B2 (enrdf_load_stackoverflow) | 1990-12-05 |
Family
ID=17304722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25732087A Granted JPH0199725A (ja) | 1987-10-14 | 1987-10-14 | 二層管の曲げ加工方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0199725A (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765285A (en) * | 1995-08-09 | 1998-06-16 | The B.F. Goodrich Company | Method of bending a rigid thermoplastic pipe |
| DE102004038138B4 (de) * | 2004-08-05 | 2007-06-06 | Audi Ag | Verfahren zur Herstellung eines hybriden Rohres |
| JP5812293B2 (ja) * | 2012-10-04 | 2015-11-11 | 株式会社黒木工業所 | ベンド鋼管の製造方法 |
| US10689211B2 (en) | 2015-03-20 | 2020-06-23 | Valme S.R.L.-Unico Socio | Pipe for conveying abrasive materials such as concrete, apparatus and method for producing said pipe |
-
1987
- 1987-10-14 JP JP25732087A patent/JPH0199725A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199725A (ja) | 1989-04-18 |