Foseco Non-Ferrous Foundryman’s Handbook Part 13 ppsx

... properties. High purity copper is particularly prone to gas porosity problems due both to hydrogen and the hydrogen/oxygen reaction which occurs if any 242 Foseco Non-Ferrous Foundryman’s Handbook Recommended ... not deleterious. An oxidising atmosphere must be avoided since it would cause 234 Foseco Non-Ferrous Foundryman’s Handbook CUPRIT Neutral or reducing fluxes, they pro...

Ngày tải lên: 10/08/2014, 11:22

... nodular 11.2 11.9 12.5 13. 0 13. 4 Pearlitic flake or nodular 11.1 11.7 12.3 12.8 13. 2 Ferritic malleable 12.0 12.5 12.9 13. 3 13. 7 Pearlitic malleable 11.7 12.2 12.7 13. 1 13. 5 White iron 8.1 9.5 ... sand particles. Terminal velocities of spherical particles of density 2.5 g/cm 3 (approx.) BS sieve Particle Terminal velocity size dia. (µm) m/sec ft/sec ft/min 16 1003 7.0 23 1400 3...

Ngày tải lên: 10/08/2014, 11:22

... malleable iron. 114 Foseco Ferrous Foundryman’s Handbook toughness are required. Applications are excavating buckets, travelling wheels, gears, tractor track links and pneumatic tool parts. Frequently ... For detailed specifications refer to the national and international standards. 112 Foseco Ferrous Foundryman’s Handbook Carbon steels These are steels in which carbon is the main...

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... 1.25 Ni Al Bronze 0.50 Sn Bronze 0.75 300 Foseco Ferrous Foundryman’s Handbook Non-ferrous castings Table 19.3 gives a feeding distance factor for some of the non-ferrous alloys; this factor is used ... sleeves; Cylindrical sleeves. 290 Foseco Ferrous Foundryman’s Handbook differences between conventional systems and direct pour practice. The examples shown in Fig. 18 .13 ill...

Ngày tải lên: 10/08/2014, 11:22

... (1991), Butterworth-Heinemann, reproduced by permission of the publishers.) 38 Foseco Non-Ferrous Foundryman’s Handbook Table 2.9 Uses and general remarks Table 2.10 Colour codes for BS1490 ingots. ... has been incorporated into BS 1490 and provides a common scheme for marking ingots 28 Foseco Non-Ferrous Foundryman’s Handbook Table 2.8 summarises the casting characteristics o...

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... grey 14.00 3.0 30.0 no 130 0 3.0 500 260 grey 4.00 3.0 32.0 134 0 2.0 600 150 216 grey 8.9 3.0 32.0 no 1450 7.0 500 60 133 malleable 11.00 3.0 36.0 yes 135 0 3.0 400 150 313 grey 16.00 3.0 22.0 ... be established by experience for a particular cupola operation, but the following ‘Levi equation’ is a good starting guide. 58 Foseco Ferrous Foundryman’s Handbook Charge materials The m...

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... ends, readily distinguished from true flake graphite (Fig. 6.4). Compacted graphite 74 Foseco Ferrous Foundryman’s Handbook pocket. The ladle is filled with liquid iron, sealed and rotated so that ... low sulphur pig iron if necessary. Tap at around 2.8–3.2%C 0.6–1.0%Si 0.08–0.12%S 72 Foseco Ferrous Foundryman’s Handbook Plunger: the alloy is plunged into the ladle using a refract...

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... while the less harmful Type III angular sulphides are formed at higher residual Al 132 Foseco Ferrous Foundryman’s Handbook These figures are only a rough guide, for greater accuracy, actual measurements ... wood. 116 Foseco Ferrous Foundryman’s Handbook recarburisation due to the breakdown of carbon-containing binders. These corrosion resistant steels are widely used for marine...

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... 7.14 101.5 182 Foseco Ferrous Foundryman’s Handbook Phenolic-isocyanates (phenolic-urethanes) Foseco product: POLISET Binder. Principle: The binder is supplied in three parts. Part 1 is a phenolic ... moulds. (d) Method of locating mould halves and preventing runout. 170 Foseco Ferrous Foundryman’s Handbook 800 8.16 116.0 900 9.18 130 .5 1000 10.20 145.0 2000 20.39 290.1 3000...

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... proportions of Part 1 and Part 2 are used. Nitrogen content: Part 2, the isocyanate, contains 11.2% N. Mixing procedure: Batch or continuous mixers can be used, add Part 1 first then Part 2. Do not ... gassed (cold box) process Foseco products: POLITEC and ESHAMINE cold box resin Principle: The binder is supplied in two parts. Part 1 is a solvent based phenolic resin, Part 2 i...

Ngày tải lên: 10/08/2014, 11:22