GB727264A - Improvements relating to casting by the lost wax process - Google Patents
Improvements relating to casting by the lost wax processInfo
- Publication number
- GB727264A GB727264A GB1688652A GB1688652A GB727264A GB 727264 A GB727264 A GB 727264A GB 1688652 A GB1688652 A GB 1688652A GB 1688652 A GB1688652 A GB 1688652A GB 727264 A GB727264 A GB 727264A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wax
- pattern
- core
- soluble
- water
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention, the object of which is to provide easily removable cores for wax patterns for use in precision casting by the lost wax process, consists in forming a wax pattern conforming to the external shape of the article to be cast by investing with wax, known as pattern wax, a core which conforms to the internal shape of the article and is constituted by a wax which is soluble in a medium in which the pattern wax is substantially insoluble, preferably in intimate mixture with a filler such as fine sand, and removing the core from the solidified investment of pattern wax by solvent treatment. One part by weight of polyethylene glycol 1,000, a water-soluble wax with a melting point of 35 DEG -40 DEG C., is melted and into it are thoroughly mixed three parts by weight of crushed firebrick of 60-mesh grain size. The mixture is slowly poured into a core-box which is vibrated until the mixture has set. The core so formed is removed, placed in a die and invested with pattern wax. When the wax pattern has set it is removed from the die and placed in water to dissolve out the soluble core, which may have ports for the solvent. With pattern wax having an injection temperature of 60 DEG -80 DEG C., a suitable temperature for the water is 40 DEG C. Specifications 704,004 and 722,816, [both in Group XXII], are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1688652A GB727264A (en) | 1952-07-04 | 1952-07-04 | Improvements relating to casting by the lost wax process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1688652A GB727264A (en) | 1952-07-04 | 1952-07-04 | Improvements relating to casting by the lost wax process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB727264A true GB727264A (en) | 1955-03-30 |
Family
ID=10085455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1688652A Expired GB727264A (en) | 1952-07-04 | 1952-07-04 | Improvements relating to casting by the lost wax process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB727264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3042982A (en) * | 1958-07-07 | 1962-07-10 | Roils Royce Ltd | Expendible moulds for patterns in precision casting |
-
1952
- 1952-07-04 GB GB1688652A patent/GB727264A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3042982A (en) * | 1958-07-07 | 1962-07-10 | Roils Royce Ltd | Expendible moulds for patterns in precision casting |
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