GB1161956A - Method and Apparatus for Continuous Tube Drawing - Google Patents
Method and Apparatus for Continuous Tube DrawingInfo
- Publication number
- GB1161956A GB1161956A GB1174268A GB1174268A GB1161956A GB 1161956 A GB1161956 A GB 1161956A GB 1174268 A GB1174268 A GB 1174268A GB 1174268 A GB1174268 A GB 1174268A GB 1161956 A GB1161956 A GB 1161956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- mandrel
- die
- control member
- gas
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
Abstract
1,161,956. Extruding tubing. V. MORRILL. 11 March, 1968, No. 11742/68. Heading B5A. [Also in Division C1] In a method of continuously forming highprecision tubing, a heat-softenable material is melted and then flowed between smooth surfaces of a vertically adjustable die 35 and a mandrel 36 and over the mandrel to form a tube, the tube then being drawn away from the die and mandrel and over a control member 37 within the tube while at the same time cooling the tube and flowing a gas through an annular zone between the tube and the control member, the flow of gas being regulated through the zone to control the final dimensions of the tubing, the tube being continually drawn away from the control member, its cross-section being reduced until the tube has cooled sufficiently for it to be no longer ductile under the drawing effort. Any change in the gas pressure flowing through the annular zone is automatically detected and this is corrected simultaneously with any changes in rate of material feed to be melted, melting temperature and molten material level. The die, mandrel and control member are rotated. A rod (104), Fig. 2 (not shown), of heatsoftenable material is regulably fed into the cup of die 35, is firstly preheated by an electric resistance source and a variable gas source (120) and is then melted by two sources, a high-frequency (or radio-frequency) induction heater and a controllable gas heater (120<SP>1</SP>), Fig. 17, not shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1174268A GB1161956A (en) | 1968-03-11 | 1968-03-11 | Method and Apparatus for Continuous Tube Drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1174268A GB1161956A (en) | 1968-03-11 | 1968-03-11 | Method and Apparatus for Continuous Tube Drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1161956A true GB1161956A (en) | 1969-08-20 |
Family
ID=9991858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1174268A Expired GB1161956A (en) | 1968-03-11 | 1968-03-11 | Method and Apparatus for Continuous Tube Drawing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1161956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2208165A (en) * | 1987-06-20 | 1989-03-08 | Schott Ruhrglas | Method and device for manufacturing profiled glass tubing |
-
1968
- 1968-03-11 GB GB1174268A patent/GB1161956A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2208165A (en) * | 1987-06-20 | 1989-03-08 | Schott Ruhrglas | Method and device for manufacturing profiled glass tubing |
| GB2208165B (en) * | 1987-06-20 | 1992-02-05 | Schott Ruhrglas | Method and device for manufacturing profiled glass tubing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |