Manufacturing method of large-diameter cylinder prefabricated body

Abstract

The invention discloses a manufacturing method of a large-diameter cylinder prefabricated body. The manufacturing method comprises the following steps: 1, preparing a special mold for the prefabricated body; 2, preparing a cylinder inner wall woven carbon cloth / net tire composite material needling unit layer; 3, preparing a first carbon fiber prepreg cloth isolation layer; 4, preparing a net tire / carbon fiber circulating unit layer; 5, preparing a second carbon fiber prepreg cloth isolation layer; 6, preparing a cylinder outer wall woven carbon cloth / net tire composite material needling unit layer; and 7, preparing a flange woven carbon cloth / net tire composite material needled layer to obtain a large-diameter cylinder prefabricated body with the diameter larger than 3 m. The annular sandwich design is adopted, a core heat insulation layer is wrapped, mechanical supporting of the prefabricated body in a furnace is achieved, the stability and firmness of the overall structure are guaranteed, the annular sandwich area is a low-density area and has excellent low-heat-conductivity performance and heat insulation effect, compared with a pure C / C prefabricated body structure, heat loss is greatly reduced, and the method is energy-saving, environment-friendly and extremely economical.

Description

technical field [0001] The invention belongs to the technical field of heat preservation materials for furnace bodies, and in particular relates to a method for manufacturing a large-diameter cylindrical prefabricated body. Background technique [0002] At present, graphite felt is mostly used for the insulation layer of the furnace body. During use, due to the influence of the atmosphere in the furnace on the graphite felt in the long-term high-temperature environment and the corrosion of the graphite felt by the air during the process of loading and unloading, the graphite felt needs to be replaced regularly. . Usually, when replacing, carbon felt is wrapped on a special cylindrical steel mesh, and after wrapping to a certain thickness, it is sewn with carbon rope. After sewing, it is sent into the furnace together with the steel mold, and finally the steel mold is taken out. [0003] In recent years, with the rapid development of the C / C industry, the scale of domestic C...

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Problems solved by technology

[0004] In the prior art, the acupuncture movement mechanism of the acupuncture machine can only move vertically up and down to realize the acupuncture operation, and since the diameter of the large-diameter cylindrical prefabricated body is almost more than 3m, the vertical acupuncture movement can only be performed on the prefabricated body. Developed directly above, resulting in too large equipment dimensions, low utilization rate of work space, and high equipment cost, therefore, it is impossible to achieve corporate profitability

At the same time, in the past technology, most preforms of thermal field materials are produced by pure acupuncture. The pure acupuncture production of large-diameter cylindrical preforms will inevitably lead to heavy product weight, long production cycle, and the mold tooling cannot be lightened. The heat insulation effect is greatly reduced

Based on the above, the existing and previous technologies cannot realize the preparation of large diameters

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