A cold isostatic pressing cylinder material forming die

Abstract

The invention discloses a mold for cold isostatic pressing cylinder material, which comprises a base, an inner barrel and a soft mold, the inner barrel is fixedly installed in the middle of the top surface of the base, and a plurality of evenly distributed ventilation holes are opened on the side wall; the soft mold is set on the The inner barrel has a ring-shaped structure as a whole, and its top has a ring-shaped charging port; an inner steel mold is placed inside the soft mold, and the inner steel mold is set around the inner barrel and is close to the outer wall of the soft mold; after the soft mold is loaded, the ring is installed The feed port is sealed and closed and the soft mold is vacuumed. In the present invention, the inner steel mold and the inner barrel are arranged so that the outer diameter of the cylinder product is close to the inner diameter of the inner steel mold, the size is fixed, and the shape is regular, which is beneficial to the processing and the production of large-scale outer diameter products; the inner diameter of the product is smaller than the inner diameter of the charge It needs to be larger and the wall thickness is moderate, which solves the problem of large waste of core material.

Description

technical field [0001] The invention relates to the technical field of isostatic pressing graphite product production, in particular to a cold isostatic pressing cylinder material forming die. Background technique [0002] The heaters and thermal insulation cylinders used in the photovoltaic industry are made of solid isostatic graphite round products. Since the heater and thermal insulation cylinder only need the outer ring material, the core material is wasted. Therefore, the photovoltaic heater, 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 dies are divided into two types: with pressure core and without pressure core. The mold with pressure core can only produce cylindrical products with a smaller inner diameter, which has no great advantage compared with solid products; the mold without pressure core, due to the large shrinkage of the powder during t...

AI Technical Summary

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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