A kind of forming method of large-scale isostatic pressing graphite products

Abstract

The invention discloses a method for forming a large-scale isostatic graphite product, comprising the following steps: S1: raw material crushing: selecting high-quality calcined petroleum coke and pitch coke for crushing to obtain primary crushed raw materials; S2: raw material grinding: grinding Grind the primary crushed raw materials described in S1 to obtain powdery raw materials; S3: raw material weighing and batching: weigh the powdery raw materials described in S2, and carry out batching according to the ratio of 1:1 to obtain the prepared raw materials. Mixing raw materials; S4: dry mixing of raw materials: mixing the pre-mixed raw materials described in S3 at high temperature. The present invention can ensure that the ratio of the two raw materials is appropriate through raw material crushing, milling, weighing and batching, and can ensure that the two raw materials are fully mixed, and can be made through dry mixing of raw materials, wet mixing of raw materials, hot rolling and roasting to make isostatic pressing The product has large specifications, high density, and uniform internal structure, which greatly improves the quality of isostatic pressed products, and can reduce production costs to meet the needs of modern production.

Description

technical field [0001] The invention relates to the technical field of forming isostatic graphite products, in particular to a method for forming large-scale isostatic graphite products. Background technique [0002] Isostatic graphite is pressed from high-purity graphite. Isostatic graphite is a new product developed in the past 50 years in the world, and is closely related to today's high technology. It not only has great achievements in civilian use, but also occupies an important position in the cutting-edge of national defense. It is a new type of material, which is eye-catching. It is an irreplaceable material for the manufacture of single crystal furnaces, metal continuous casting graphite crystallizers, graphite electrodes for EDM, etc. It is also an excellent material for manufacturing rocket nozzles, deceleration materials and reflective materials for graphite reactors. [0003] After retrieval, the patent document with the publication number CN104529450B disclos...

AI Technical Summary

Problems solved by technology

The isostatic pressed products prepared by this method have large specifications, high density, and uniform internal structure, which greatly lays a good foundation for the roasting process of isostatic pressed products, but the steps are relatively cumbersome and the production cost is high, so it is not suitable for modern production.