IE38059L - Hollow clayware. - Google Patents
Hollow clayware.Info
- Publication number
- IE38059L IE38059L IE730960A IE96073A IE38059L IE 38059 L IE38059 L IE 38059L IE 730960 A IE730960 A IE 730960A IE 96073 A IE96073 A IE 96073A IE 38059 L IE38059 L IE 38059L
- Authority
- IE
- Ireland
- Prior art keywords
- clay
- mandrels
- fired
- mandrel
- hollow
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/92—Methods or apparatus for treating or reshaping
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
1390965 Sizing hollow clay articles HEPWORTH IRON CO Ltd 6 June 1973 [15 June 1972] 28091/72 Heading B5A [Also in Division C7] A mandrel having a co-efficient of expansion greater than fired clay is inserted within a hollow, unfired clay article, and the clay then fired. On cooling, the mandrel shrinks away from the clay to allow removal. As described, undersized steel mandrels 20, 22 are inserted one in each end of a moulded or extruded green clay pipe 10. The clay is heated up to 200 C. to reduce its moisture content to 1%, either supported on rings 18, 20 on a kiln car within an associated drying chamber, or on a roller drier conveyer. The clay is then fired at 1040 C., and becomes plastic and contracts on to the mandrels as the maximum temperature is reached. The clay is freeze-cooled by blown air to reduce the temperature to 700 C., when the mandrels can be removed. The mandrels can be inserted into the pipe at any time up to the clay becoming plastic. An iron/chromium/silicon ferritic alloy is described for the mandrel, having magnetic properties to aid insertion and removal. Spigots, sockets, and plain pipe ends can be sized.
[GB1390965A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2809172A GB1390965A (en) | 1972-06-15 | 1972-06-15 | Manufacture of hollow clayware articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE38059L true IE38059L (en) | 1973-12-15 |
| IE38059B1 IE38059B1 (en) | 1977-12-21 |
Family
ID=10270121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE960/73A IE38059B1 (en) | 1972-06-15 | 1973-06-12 | Manufacture of hollow clayware articles |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US3822988A (en) |
| AU (1) | AU471115B2 (en) |
| BE (1) | BE800863A (en) |
| CA (1) | CA1000937A (en) |
| CS (1) | CS166844B2 (en) |
| DD (1) | DD104458A5 (en) |
| DE (1) | DE2330620C2 (en) |
| ES (1) | ES415970A1 (en) |
| FR (1) | FR2190048A5 (en) |
| GB (1) | GB1390965A (en) |
| IE (1) | IE38059B1 (en) |
| IT (1) | IT986525B (en) |
| NL (1) | NL172628C (en) |
| ZA (1) | ZA733998B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625115A1 (en) * | 1986-07-25 | 1988-01-28 | Didier Werke Ag | DEVICE FOR HOLDING A CERAMIC TUBE DURING THE BURNING |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1086166B (en) * | 1958-09-26 | 1960-07-28 | Hermann Muecher | Device for the vertical stacking of socket pipes made of materials to be burned during the burning process |
-
1972
- 1972-06-15 GB GB2809172A patent/GB1390965A/en not_active Expired
-
1973
- 1973-06-12 IE IE960/73A patent/IE38059B1/en unknown
- 1973-06-12 ZA ZA733998A patent/ZA733998B/en unknown
- 1973-06-12 AU AU56847/73A patent/AU471115B2/en not_active Expired
- 1973-06-13 BE BE132226A patent/BE800863A/en not_active IP Right Cessation
- 1973-06-13 DD DD171511A patent/DD104458A5/en unknown
- 1973-06-14 IT IT68762/73A patent/IT986525B/en active
- 1973-06-14 US US00369881A patent/US3822988A/en not_active Expired - Lifetime
- 1973-06-14 CS CS4303A patent/CS166844B2/cs unknown
- 1973-06-15 CA CA174,202A patent/CA1000937A/en not_active Expired
- 1973-06-15 FR FR7321931A patent/FR2190048A5/fr not_active Expired
- 1973-06-15 NL NLAANVRAGE7308391,A patent/NL172628C/en not_active IP Right Cessation
- 1973-06-15 ES ES415970A patent/ES415970A1/en not_active Expired
- 1973-06-15 DE DE2330620A patent/DE2330620C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2330620A1 (en) | 1974-01-03 |
| BE800863A (en) | 1973-10-01 |
| AU5684773A (en) | 1974-12-12 |
| CS166844B2 (en) | 1976-03-29 |
| US3822988A (en) | 1974-07-09 |
| DD104458A5 (en) | 1974-03-12 |
| CA1000937A (en) | 1976-12-07 |
| ZA733998B (en) | 1974-05-29 |
| GB1390965A (en) | 1975-04-16 |
| NL172628B (en) | 1983-05-02 |
| AU471115B2 (en) | 1976-04-08 |
| IE38059B1 (en) | 1977-12-21 |
| DE2330620C2 (en) | 1982-09-30 |
| ES415970A1 (en) | 1976-05-16 |
| FR2190048A5 (en) | 1974-01-25 |
| IT986525B (en) | 1975-01-30 |
| NL172628C (en) | 1983-10-03 |
| NL7308391A (en) | 1973-12-18 |
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