By Robert Wilson
Contiuous casting of non-ferrous metals has been practiced for good over a hundred years. the method has many benefits over static ingot and ebook mildew casting, an important being greater yield, decreased power intake and relief in manpower, with a consequent relief in expense. This booklet presents an account of ways non-stop casting has constructed and the way the method can be utilized inside an engineering surroundings for casting a variety of copper-based alloys and invaluable metals, together with gold and silver, and chosen nickel alloys.
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Additional info for A practical approach to continuous casting of copper-based alloys and precious metals
On assembly the cooler is carefully lap fitted onto the graphite, ensuring that the interface contact is as near to 1000/0 as possible. The die has provision for search thermo-couple and nitrogen protection to the casting bore. The design of starter bar is illustrated. For example, if this die is used for casting gold alloy rod, two methods for starter rod construction apply: (1) graphite plug and steel starter rod. The plug which must be tight fitting, is pushed out of position into the crucible prior to start-up.
19. 20. Casting A. H. PEHRSON: US Patent 1,088,171 (1914). B. E. ELDRED:US Patent 1,868,099 (1932). POLANDand LINDNER:US Patent 2,136,394 (1938). A. : 'Asarco Process' Met. Reviews, Inst. of Metals, 1960, 5, 413-446. A. : 'Flo cast Process' Met. Reviews, Inst. of Metals, 1960, 5, 413-446. E. C. ELLWOOD: 1of Inst. of Metals, 1955-56, 84, 319-326. Properzi Process: Met. Reviews, Inst. of Metals, 1961, 6(22). SOUTHWIRE: 'Southwire Revolutionises Non-Ferrous Rod Production with SCR System' 33 Magazine, June 1975.
Casting under the conditions in test Series 2 produces severe surface fissuring with ultimate rod fracture, when casting at higher speeds. 3. 5. In this case rapid acceleration/deceleration is used, together with fast displacement of metal into the die/cooler, operating with pulse rates of around 1000 per minute. Under these conditions casting speeds of 3 to 4 metres/minute are achieved on 12-mm-diameter rod. 5 Cooler Assembly Strip In strip casting, cooling characteristics are similar to those discussed for rod casting.