摘要:
An apparatus for pressing a mass into a coherent workpiece has a mold body defining a chamber and a mold liner in the chamber having a generally cylindrical pressing surface centered on an axis, directed in one radial direction, and defining a mold cavity and an opposite surface directed in an opposite radial direction. A plunger is engageable axially in the cavity. The cavity holds the mass in engagement with the pressing surface and with the plunger. The plunger can be pressed axially against the mass and thereby compress the mass in the cavity. A force, typically effected hydraulically, is exerted against the liner in the one radial direction between the mold body and the opposite surface of the liner to thereby elastically deform the liner in the one radial direction toward the mass and radially compress the liner and mass in the cavity.
摘要:
In an apparatus for producing molded articles from a pourable compound, such as an oxide-ceramic compound, for example a porcelain compound, an injection chamber is formed between an isostatic compression molding tool and an injection chamber. A suction opening is connected to the injection chamber. The pourable compound is supplied through an inlet opening. A fluidizing air inlet line is positioned in the compound inlet opening and it is movable relative to the inlet opening so that it can be placed in an open or closed position for admitting or blocking flow of the compound into the injection chamber.
摘要:
A package to be mounted with semiconductor chips has a heat-radiating substrate having a thickness of smaller than 0.4 mm of a CunullMo composite as prepared by impregnating from 30 to 40% by mass of copper (Cu) melt into a green compact of molybdenum. The heat-radiating substrate is produced by preparing an Mo green compact through isostatic molding, mounting Cu on the Mo green compact, heating it to thereby impregnate copper into the Mo green compact to give a CunullMo composite, and rolling the CunullMo composite into a sheet substrate. In the isostatic molding process, at least two or more plates 27, 29, 31, 33, 35 and 37 are disposed adjacent to the inner surface of a side wall as divided into at least two portions, Mo powder is filled into the space as formed by those plates 27, 29, 31, 33, 35 and 37 with covering the Mo powder compact with a flexible cover, such as a rubber medium 39 or the like, to prepare a composite, then the resulting composite is put into a pressure tank, an external isostatic pressure is applied thereto against the flexible cover, and the plates are slid via the cover along the side wall thereby compressing the composite between the thus-slid plates into an Mo green compact.
摘要:
In a method of manufacturing dry-pressed molded articles from essentially dry, pourable ceramic metal or carbon-containing molding compound in a mold of one or more parts, it is proposed to generate a negative pressure through the mold wall in the hollow space of the mold and, by means of the pressure difference generated as a result, to propel molding compound which is under pressure, for example, atmospheric pressure, through an injection opening into the hollow space of the mold and to precompress the molding compound in the mold while deaerating the molding compound, and that subsequently, the pneumatically precompressed molding compound is compression molded into a molded article having the desired final density.
摘要:
A maximum diameter (d) of each of surface openings formed in a bearing surface through melting of Sn metal powder as a binder is set within a range of 0 μm
摘要:
A maximum diameter (d) of each of surface openings formed in a bearing surface through melting of Sn metal powder as a binder is set within a range of 0 μm
摘要:
Long carbonaceous moldings and long carbonaceous products as well as methods of production thereof are provided by which carbonaceous products can be obtained without allowing twisting or curving and with less frequent occurrence of cracking etc., even when subjected to heat treatment, and which are excellent in mass productivity. The long carbonaceous moldings have an aspect ratio of 3 to 20 and show fluctuations in the density thereof of not more than 0.05 Mg/m3 throughout the whole moldings.
摘要翻译:提供长碳质成型体和长碳质物以及其制造方法,即使在进行热处理的情况下也可以获得碳质产物而不允许扭曲或弯曲并且发生较少的裂纹等,并且其优异 批量生产力。 长碳质成型体的纵横比为3〜20,在整个模制品中,其密度波动不大于0.05Mg / m 3。
摘要:
An apparatus for pressing a mass into a coherent workpiece has a mold body defining a chamber and a mold liner in the chamber having a generally cylindrical pressing surface centered on an axis, directed in one radial direction, and defining a mold cavity and an opposite surface directed in an opposite radial direction. A plunger is engageable axially in the cavity. The cavity holds the mass in engagement with the pressing surface and with the plunger. The plunger can be pressed axially against the mass and thereby compress the mass in the cavity. A force, typically effected hydraulically, is exerted against the liner in the one radial direction between the mold body and the opposite surface of the liner to thereby elastically deform the liner in the one radial direction toward the mass and radially compress the liner and mass in the cavity.