Mould for using two-dimensional fiber fabric to produce blanks of carbon-carbon composite barrel products

Abstract

A mould for using two-dimensional fiber fabric to produce blanks of carbon-carbon composite barrel products comprises an inner mould and an outer mould. The inner mould comprises a slider, an inner supporting barrel, an inner pressure block, an outer pressure block and a mould mounting flange. The mould mounting flange is connected with the outer pressure block through a screw I, the outer pressure block is connected with the inner pressure block through a screw II and a spring I, the inner pressure block is connected with the inner supporting barrel through a screw III and a spring II, and the slider is connected with the inner supporting barrel through a screw IV. The outer mould comprises a flap mould I, a flap mold II and connecting bolts. The mould is simple in structure and convenient in operation, using the mould to produce the blanks of carbon-carbon composite barrel products can realize uniformity and densification of the blanks, blank demoulding is convenient, machining of seam allowances is not needed, production efficiency is high, and quality of finished products is stable.

Description

technical field [0001] The invention relates to a mold for preparing a cylindrical product body, in particular to a mold for preparing a medium-high density carbon-carbon composite material cylindrical product body with a two-dimensional fiber fabric. Background technique [0002] The crucible and the crucible (the two-stage type is divided into the crucible side and the crucible support) and the supporting bushing are the main components of the thermal field system of the silicon crystal growth furnace. The growth temperature of silicon single crystal is about 1450°C. At this temperature, the strength and thermal stability of the supporting bush and crucible side play a decisive role in the safety of the thermal field system. The density of the supporting bushing and crucible side material in the thermal field is required to be 1.2-1.5g / cm 3 , There are also higher requirements for mechanical properties such as bending strength. [0003] At present, the billet mold for ca...

AI Technical Summary

Problems solved by technology

However, the green body produced in this way has the following defects: the gap between the layers of the green body fabric is relatively large and uneven, which is not conducive to subsequent densification, resulting in product density that does not meet the requirements, resulting in easy delamination and deformation of the product; The green body is difficult to demould, and usually requires external force to demould, and it is also easy to damage the green body, thereby reducing the quality of the product

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