Materials Material Science

A practical approach to continuous casting of copper-based by Robert Wilson

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 mold casting, crucial being enhanced yield, diminished power intake and relief in manpower, with a consequent relief in rate. This publication presents an account of ways non-stop casting has built and the way the method can be utilized inside of an engineering atmosphere for casting quite a lot of copper-based alloys and valuable 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

Example text

5. This consists of a graphite die insert assembled into a triple-walled copper cooler jacket. 1 Withdrawal sequence. 10 mm proprietary microprocess control systems are discussed under individual casting equipment suppliers in Chapter 3. hot end and exits via the central bore. The die 'hot end' is insulated up to the shoulder with alumina silicate or zirconia designed to reduce the cooling of the die 'hot face'. 1, is common to most continuous casting systems and enables a wide range of parameter adjustments to be made.

3a. 41 Continuous casting of Copper-Based Alloys and Precious Metals Fig. 3a Photo-micrograph predominantly radial cooling. Fig. 3b Photo-micrograph predominantly axial cooling . 3b. 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.

17 Continuous casting of Copper-Based Alloys and Precious Metals steel water-jacket must be machined to ensure a tight fit with intimate interface contact with the graphite die. 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.

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