eczema
发表于 2025-3-28 17:02:57
Castability of Metals,t products are boundless. The process of casting is essentially, very simple, it is merely necessary to make the metal or alloy liquid, or at least semi solid, usually by elevating the temperature, alloying and refining may then be carried out and the metal is caused to flow into a cavity (which may
Aerate
发表于 2025-3-28 22:26:45
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不来
发表于 2025-3-29 00:03:09
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OPINE
发表于 2025-3-29 05:35:37
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Constitution
发表于 2025-3-29 09:06:52
Sands and Sand Preparation,t range of sand moulding and coremaking processes available, perhaps the engineer today could be excused if he feels this facet of casting production should be termed ‘granular witchcraft’. However, there is no doubt that the efficient and economic production of quality sand castings in the modern f
DEMUR
发表于 2025-3-29 12:53:54
Cores and Coremaking,ical. This advancement in the field of coremaking has been basically in the materials used, with modifications to equipment to obtain the advantages of the new process techniques. These new materials, processes and equipment have changed the skills required in the ‘core shop’ and influenced the desi
相同
发表于 2025-3-29 17:41:39
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foreign
发表于 2025-3-29 21:21:52
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CULP
发表于 2025-3-30 01:55:23
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conjunctiva
发表于 2025-3-30 04:45:41
Pressure Diecasting,ng place; in most of the various pressure diecasting techniques an applied pressure is also employed to inject the metal into the mould, but this is not universally the case. Of the ten distinct techniques listed in Table 1, three are in general commercial use and, together, account for more than 95