GB1164988A - A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness. - Google Patents
A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness.Info
- Publication number
- GB1164988A GB1164988A GB828268A GB828268A GB1164988A GB 1164988 A GB1164988 A GB 1164988A GB 828268 A GB828268 A GB 828268A GB 828268 A GB828268 A GB 828268A GB 1164988 A GB1164988 A GB 1164988A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- mould
- moulds
- steel
- carbon
- 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
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
- C03B5/1672—Use of materials therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/10—Construction of plunger or mould for making hollow or semi-hollow articles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/30—Details of blowing glass; Use of materials for the moulds
- C03B9/48—Use of materials for the moulds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
1,164,988. Making moulds. TOKY SHIBAURA ELECTRIC CO. Ltd. 20 Feb., 1968, No. 8282/68. Heading B3A. [Also in Division C1] A compression mould assembly for producing a glass article having a zone of reduced thickness as compared with the rest of the article comprises a plunger 1 and complementary mould 2 having opposed moulding surfaces adapted to compress therebetween a glass mass to the desired form, the moulding surfaces of each mould being formed of (i) carbon steel containing less than 0À3% by wt. carbon, (ii) ferritic stainless steel or ferritic heat-resistant steel containing less than 0À4% by wt. carbon, or (iii) austenitic stainless steel or austenitic heatresistant steel, except for the portion of the moulding surface of at least one of the moulds, which provides the zone of reduced thickness in the article, said portion being formed of a selffluxing nickel-chromium-boron base alloy having a Rockwell hardness of less than 45. The surface of the plunger 1 is formed by fusing the Ni-Cr-B alloy to the body of the plunger, which is of heat resisting steel, and parts are removed by cutting to form the bottom portion of the mould surface 16. A ring 10 is slidably mounted around the upper part of plunger 1 and has a boss-like portion 12 which seats on a recessed ledge 12 in the upper edge of mould 2. The moulds are preferably made of heat resisting steel containing 13% by wt. of chromium. That area of the plunger designed to form the area of reduced thickness may have a composition in per cent by wt., of Ni 90, Cr 5, B 1, Fe+Si+ C 4 and a Rockwell hardness of 20, or Ni 80, Cr 11, B 3, Fe + Si + C 6 and a Rockwell hardness of 40. The preferred range is Ni 75-90, Cr 4-18, B 0À75-4À5 and Fe+Si+C less than 10. The mould assembly is preferably used for cathode-ray tube cone portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB828268A GB1164988A (en) | 1968-02-20 | 1968-02-20 | A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB828268A GB1164988A (en) | 1968-02-20 | 1968-02-20 | A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1164988A true GB1164988A (en) | 1969-09-24 |
Family
ID=9849525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB828268A Expired GB1164988A (en) | 1968-02-20 | 1968-02-20 | A Compression Mould Assembly for Producing Glass Articles of Uneven Thickness. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1164988A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919651A1 (en) * | 1978-05-18 | 1979-11-22 | Philips Nv | TOOL FOR HANDLING AND FORMING GLASS |
-
1968
- 1968-02-20 GB GB828268A patent/GB1164988A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2919651A1 (en) * | 1978-05-18 | 1979-11-22 | Philips Nv | TOOL FOR HANDLING AND FORMING GLASS |
| US4251254A (en) | 1978-05-18 | 1981-02-17 | U.S. Philips Corporation | Tools for the handling and shaping of glass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |