US1694962A - Metal tubing - Google Patents
Metal tubing Download PDFInfo
- Publication number
- US1694962A US1694962A US1694962DA US1694962A US 1694962 A US1694962 A US 1694962A US 1694962D A US1694962D A US 1694962DA US 1694962 A US1694962 A US 1694962A
- Authority
- US
- United States
- Prior art keywords
- metal
- core
- metal tubing
- expansion
- tubing
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 title description 46
- 229910052751 metal Inorganic materials 0.000 title description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 16
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 235000021028 berry Nutrition 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- -1 for example Substances 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 229910052904 quartz Inorganic materials 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000005350 fused silica glass Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/02—Tubes; Rings; Hollow bodies
Definitions
- the present invention relates to the manufacture of metal tubing.
- the desired metal for example, copper
- a core of silica, or quartz from which the resulting tube may be removed when expanded thermally or otherwise.
- moderate heating causes much greater expansion of the metal than of the silica core it furnishes a convenient method of rendering the shell and core separable.
- FIG. 1 illustrates the core or mandrel before deposition of the metal
- Fig. 2 the core coated preliminary to the electrolysis with conducting material
- Figs. 3 and 4 show the deposit built up by electrolysis
- Fig. 5 illustrates the finished article.
- the mandrel or core 1 consisting of fused quartz and having a smooth surface, first is provided with a conductive base 2 (Fig. 2) consisting for example, of a thin film of silver which may be deposited on the core by one of the processes used in the manufacture of mirrors.
- Copper or other desired metal is deposited by electrolysis on the base 2 to desired thick ness, as shown in Fig. 3.
- the finished tube 3 finally is removed from the core at a temperature of about 300 C., or the metal may be mechanically expanded by burnishing, which allows the tube to be easily removed from the mandrel. Due to the great difference in thermal coefiicient of expansion of TUBING.
- the core is easily removable from the shell.
- the drawing shows a cylindrical tube of uniform diameter, the invention obviously is not limited to the manufacture of tubes of this particular shape.
- the method of making metal tubing which comprises electroplating metal onto a support having a coeflicient of expansion which is low compared with the coeflicient of expansion of the deposited metal, and heating the combined support and deposited metal to a temperature sufliciently high to permit, separation. of the holder and deposited metal.
- the method of making metal tubing which comprises applying a metallic film to a non-conducting support having a' coefficient of expansion which is low compared with the co-efiicient of expansion of said metallic film, electro-depositing metal onto said film, and heating the combined support and metal to a temperature sufficiently high to permit separation of the support and deposited metal.
Description
Dec. 11, 1928. v 1,694,962
E'. R. BERRY METAL TUBING Filed June 6 1923 [/7 Men 6 0/; Edward RBe/v'y,
Wis .flttorney.
Patented Dec. 11, 1928.
UNITED STATES PATENT OFFICE.
EDWARD 1R. BERRY, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
METAL Application filed June 6,
The present invention relates to the manufacture of metal tubing.
It is the object of my invention to provide a convenient method of making metal 5 tubes which are seamless and may be made extremely thin-walled if so desired.
In accordance therewith the desired metal, for example, copper, is deposited upon a core of silica, or quartz, from which the resulting tube may be removed when expanded thermally or otherwise. As moderate heating causes much greater expansion of the metal than of the silica core it furnishes a convenient method of rendering the shell and core separable.
The accompanying drawings illustrate the steps of carrying out my invention, Fig. 1 illustrating the core or mandrel before deposition of the metal; Fig. 2 the core coated preliminary to the electrolysis with conducting material; Figs. 3 and 4 show the deposit built up by electrolysis; and Fig. 5 illustrates the finished article.
The mandrel or core 1, consisting of fused quartz and having a smooth surface, first is provided with a conductive base 2 (Fig. 2) consisting for example, of a thin film of silver which may be deposited on the core by one of the processes used in the manufacture of mirrors.
Copper or other desired metal is deposited by electrolysis on the base 2 to desired thick ness, as shown in Fig. 3. The finished tube 3 finally is removed from the core at a temperature of about 300 C., or the metal may be mechanically expanded by burnishing, which allows the tube to be easily removed from the mandrel. Due to the great difference in thermal coefiicient of expansion of TUBING.
1923. Serial N0. 643,786.
quartz and metals, such as copper or silver, the core is easily removable from the shell. Although the drawing shows a cylindrical tube of uniform diameter, the invention obviously is not limited to the manufacture of tubes of this particular shape.
What I claim as new and desire to secure by Letters Patent of the United States, is
l The method of making metal tubing which consists in electro-depositing the desired metal on a silica support and removing said support at a sufliciently high temperature to cause separation of said members due to difference in thermal expansion.
2. A mandrel constituted of vitreous silica for the fabrication of metal tubing by depo-- sition of metal thereon.
3. The method of making metal tubing which comprises electroplating metal onto a support having a coeflicient of expansion which is low compared with the coeflicient of expansion of the deposited metal, and heating the combined support and deposited metal to a temperature sufliciently high to permit, separation. of the holder and deposited metal.
4. The method of making metal tubing which comprises applying a metallic film to a non-conducting support having a' coefficient of expansion which is low compared with the co-efiicient of expansion of said metallic film, electro-depositing metal onto said film, and heating the combined support and metal to a temperature sufficiently high to permit separation of the support and deposited metal.
In witness whereof I have hereunto set my hand this first da of June, 1923.
DWARD R'BERRY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1694962A true US1694962A (en) | 1928-12-11 |
Family
ID=3416873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US1694962D Expired - Lifetime US1694962A (en) | Metal tubing |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1694962A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3022697A (en) * | 1956-12-04 | 1962-02-27 | Conn Ltd C G | Electroformed mouthpipe and mouthpiece receiver |
| US3779872A (en) * | 1972-06-15 | 1973-12-18 | Rmi Co | Cathode sheet for electrodeposition and method of recovering electrodeposited metals |
| FR2470455A1 (en) * | 1979-11-23 | 1981-05-29 | Kabel Metallwerke Ghh | Fabrication of rectangular or square waveguides - is produced in lengths from round tubes and has wall thickness reduced by drawing and attaching flanges using galvanic process |
| FR2576921A1 (en) * | 1985-02-06 | 1986-08-08 | Von Laue P Langevin Inst Max | METHOD FOR PRODUCING A WORKPIECE SUCH AS A CONDUIT OF A BEAM COMPRISING AT LEAST ONE SURFACE OF VERY LOW ROUGHNESS |
| US5772864A (en) * | 1996-02-23 | 1998-06-30 | Meadox Medicals, Inc. | Method for manufacturing implantable medical devices |
| US10697075B2 (en) | 2018-03-29 | 2020-06-30 | Unison Industries, Llc | Duct assembly and method of forming |
| US10697076B2 (en) | 2018-03-29 | 2020-06-30 | Unison Industries, Llc | Duct assembly and method of forming |
| US10731486B2 (en) | 2018-03-29 | 2020-08-04 | Unison Industries, Llc | Duct assembly and method of forming |
| US10975486B2 (en) | 2018-03-29 | 2021-04-13 | Unison Industries, Llc | Duct assembly and method of forming |
-
0
- US US1694962D patent/US1694962A/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3022697A (en) * | 1956-12-04 | 1962-02-27 | Conn Ltd C G | Electroformed mouthpipe and mouthpiece receiver |
| US3779872A (en) * | 1972-06-15 | 1973-12-18 | Rmi Co | Cathode sheet for electrodeposition and method of recovering electrodeposited metals |
| FR2470455A1 (en) * | 1979-11-23 | 1981-05-29 | Kabel Metallwerke Ghh | Fabrication of rectangular or square waveguides - is produced in lengths from round tubes and has wall thickness reduced by drawing and attaching flanges using galvanic process |
| FR2576921A1 (en) * | 1985-02-06 | 1986-08-08 | Von Laue P Langevin Inst Max | METHOD FOR PRODUCING A WORKPIECE SUCH AS A CONDUIT OF A BEAM COMPRISING AT LEAST ONE SURFACE OF VERY LOW ROUGHNESS |
| EP0194172A1 (en) * | 1985-02-06 | 1986-09-10 | Institut Max Von Laue - Paul Langevin | Process for manufacturing an article such as a wave guide comprising at least one very smooth surface |
| US5772864A (en) * | 1996-02-23 | 1998-06-30 | Meadox Medicals, Inc. | Method for manufacturing implantable medical devices |
| US10697075B2 (en) | 2018-03-29 | 2020-06-30 | Unison Industries, Llc | Duct assembly and method of forming |
| US10697076B2 (en) | 2018-03-29 | 2020-06-30 | Unison Industries, Llc | Duct assembly and method of forming |
| US10731486B2 (en) | 2018-03-29 | 2020-08-04 | Unison Industries, Llc | Duct assembly and method of forming |
| US10975486B2 (en) | 2018-03-29 | 2021-04-13 | Unison Industries, Llc | Duct assembly and method of forming |
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