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 e-book mildew casting, an important being more suitable yield, decreased strength intake and relief in manpower, with a consequent relief in rate. This ebook presents an account of the way non-stop casting has built and the way the method can be utilized inside an engineering surroundings for casting quite a lot of copper-based alloys and necessary metals, together with gold and silver, and chosen nickel alloys.
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Extra resources for A practical approach to continuous casting of copper-based alloys and precious metals
Strip casting plants requiring high traction forces to counteract in-line forces caused by runout track resistance, milling equipment, travelling shear, coiler and die resistance, use hydraulic amplified drives to achieve the forces required. l mm of any pulse length setting. 2 CAST SURFACE FINISH - DETERIORATION WITH TIME Surface finish on rod, strip or tube will deteriorate with time. On starting a casting run, once the correct conditions of pulse length and casting speed have stabilised, an optimum surface finish will be achieved and should be maintained over a prolonged casting period.
Modification to cooler design as discussed in Chapter 2 can improve conditions. 4 PULSE CRACKING This must be examined carefully, if possible by metallographic frequently be symptomatic of casting conditions: study, as the cause can Rod - On small-diameter rod cooling rate coupled with the rate of metal displacement into the die/cooler is critical. A slow acceleration/deceleration - pull cycle t1 + t2 + t3 - tends to produce pulse cracking and limit casting speed. 32 Continuous Casting Strip - Similar condition is apparent on strip associated adjustment in cooling pattern can correct this condition.
14. The principle is the same for any tube or hollow section casting. 16, would be used. In most cases it is desirable to cast heavy section tube in the horizontal mode although vertical casting has the advantage of solidification isotherm symmetry; withdrawal of a massive billet vertically requires complex engineering to ensure adequate control. " introduced for casting small sections and can achieve relatively high cooling rates. 18 consists of a graphite mould or insert firmly pressed into a triple-walled copper cooler jacket.