Cold isostatic pressing cylinder material forming die

Abstract

The invention discloses a cold isostatic pressing barrel material forming die comprising a base, an inner barrel and a soft die. The inner barrel is fixedly installed in the middle of the top surfaceof the base, and a plurality of evenly distributed vent holes are formed in the side wall of the inner barrel; the soft die is arranged at the exterior of the inner barrel in a sleeving mode, and is of a ring structure overall; an annular charging hole is formed in the top of the soft die; an inner steel die is placed in the soft die, arranged around the inner barrel, and tightly attached to the outer side wall of the soft die; and after charging of the soft die, the annular charging hole is sealed, and the soft die is vacuumized. According to the forming die, through arrangement of the innersteel die and the inner barrel, the outer diameter of a cylinder material product is close to the inner diameter of the inner steel die, and the size is fixed; and the appearance is regular, and machining and production of products with large outer diameters are benefited; The inner diameter of the products is larger than the inner diameter of loaded materials, and the wall thickness is moderate;and the problem of serious waste of core materials is solved.

Description

technical field [0001] The invention relates to the technical field of production of isostatic graphite products, in particular to a cold isostatic pressing cylinder material forming die. Background technique [0002] The heaters and insulation cylinders used in the photovoltaic industry are processed from solid isostatic graphite round materials. Since the heaters and insulation cylinders only need outer ring materials, there is a waste of core materials. Therefore, photovoltaic heaters, The demand for isostatic graphite in the insulation cylinder has changed from solid round material to hollow cylinder material. [0003] At present, the barrel forming mold is divided into two types: with pressure core and without pressure core. A mold with a pressure core can only produce cylindrical products with a small inner diameter, which has no great advantage over solid products; a mold without a pressure core, due to the large shrinkage of the powder during the cold isostatic pres...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a cold isostatic pressing cylinder material forming mold. By setting the inner steel mold and the inner barrel, the outer diameter of the cylinder material product is close to the inner diameter of the inner steel mold, and the inner diameter ratio is higher than that of the inner steel mold. The inner diameter of the material should be larger and the shape should be regular, which is conducive to processing and solves the problem of large waste of core materials

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