GB521824A - Improvements in or relating to the centrifugal casting of metals - Google Patents
Improvements in or relating to the centrifugal casting of metalsInfo
- Publication number
- GB521824A GB521824A GB34724/38A GB3472438A GB521824A GB 521824 A GB521824 A GB 521824A GB 34724/38 A GB34724/38 A GB 34724/38A GB 3472438 A GB3472438 A GB 3472438A GB 521824 A GB521824 A GB 521824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- grains
- casting
- size
- binder
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/101—Moulds
- B22D13/102—Linings for moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
521,824. Mould materials. DEUTSCHE EISENWERKE AKT.-GES. Nov. 29, 1938, No. 3,4724. Convention date, Jan. 10. Addition to 441,335. [Class 83 (i)] A lining for centrifugal moulds comprises, in addition to the small bars or flakes, as in the parent Specification, metallic or non-metallic grains. When casting steel or other metals having a high melting point the grains consist of refractories such as quartzite, magnesite, aluminium nitride, or calcined alumina and should be between 0.5 and 2 mm. in size. Smaller grains are used when casting brass. If the grains are disposed near the mould wall a slower speed of rotation is sufficient than is necessary when a mixture is used and if they form the inner face a higher speed. Permeability to gas is increased by uniformity of grain size and thermal insulation by increase in size. Binders may be used if they do not fill the interstices and practically cease to bind after the casting operation, e.g., silica gel, alkyde resin in acetone, or sulphuric acid and sulphite lye with sand or ceramic grains. The lined mould may be heated from the inside to remove volatile constituents and reduce the loss of heat when casting steel &c. In another modification mixed or granular material free from binder may be applied to a mould lined with mixed material including a binder, this layer remaining in the mould when the casting is drawn.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE521824X | 1938-01-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB521824A true GB521824A (en) | 1940-05-31 |
Family
ID=6551482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34724/38A Expired GB521824A (en) | 1938-01-10 | 1938-11-29 | Improvements in or relating to the centrifugal casting of metals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB521824A (en) |
-
1938
- 1938-11-29 GB GB34724/38A patent/GB521824A/en not_active Expired
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