初生
发表于 2025-3-21 16:46:59
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带来的感觉
发表于 2025-3-21 23:15:01
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抵消
发表于 2025-3-22 01:38:07
Open Die Forging,erred to simply as forging. However, in latter years there has been an increasing need to distinguish it from its counterpart, closed die forging, in which the desired product shaping is obtained by compressing stock between tools containing suitable impressions and which completely enclose the piec
airborne
发表于 2025-3-22 04:40:03
Closed Die Forging,of the shape to be produced (Fig. 1). The process is ideally suited to the mass production of components such as those required by the automobile, railway, aircraft and general engineering industries. Most forgings are made from hot metal but a limited range of shapes can be produced by cold forging
疾驰
发表于 2025-3-22 11:53:25
Roll Forming,al for high production rates and high elongations in the production of non-complex shapes, such as bar, wire and tube of circular, square or hexagonal contour. It is also extensively used for flat products such as plate, sheet and strip and also for angles, sections and channels. By comparison with
Gratulate
发表于 2025-3-22 16:38:55
Extrusion, tubing. The method used was to `squirt’ molten lead through the annulus formed by a tube and a mandrel centred in the tube. The process was further developed by allowing the lead to solidify before forming the tube extrusion. This new process was a significant advance in the methods of forming meta
Fluctuate
发表于 2025-3-22 18:40:24
Cold Heading,n is carried out on specially designed horizontal presses equipped with means of feeding wire from coil, straightening, cutting to length and thence finally forming in one or more blows. The presses range from relatively simple machines equipped with a single punch and die, forming the part in a sin
antipsychotic
发表于 2025-3-22 23:29:37
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Parley
发表于 2025-3-23 04:15:57
High Energy Rate Forming,s, in certain circumstances, distinct advantages over conventional forming methods. In some cases, electrical high energy rate forming (HERF), as it is called, enables shaping and forming operations to be carried out which would be impossible by other means. Shapes can be produced in metal using eit
季雨
发表于 2025-3-23 09:19:24
Wire Manufacture,oduced by beating out small ingots to plates, strips and finally drawing to wire. Wire drawers were firmly established in Europe by the Middle Ages, but all the functions were still carried out by hand — with hammer and anvil or with a drawplate.