Production process of static pressure forming hollow roll
A production process and static pressure forming technology, which is applied in the field of static pressure forming hollow roll production technology to achieve the effect of reducing heat loss, preventing glass deformation and white fog, and reducing heat loss
Active Publication Date: 2016-02-10
浙江中硅新材料有限公司
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Problems solved by technology
[0005] In order to solve the above problems, the present invention proposes a production process of static pressure forming hollow rolls. The process technology is mature, the use of reasonable molds, the consumption of raw materials and the heat loss are small, and the heat loss of glass can be greatly reduced in application, effectively It prevents the occurrence of defects such as glass deformation and white fog, and can greatly improve the production rate of products
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[0029] The production process of the static pressure forming hollow roll, its production process is in order of granular material grading, granulation, vibration charging, cold isostatic pressing forming, demolding, sintering, finishing, assembly inspection, and storage. The specific steps are as follows :
[0030] 1) Granular material grading: SiO is selected as the raw material 2 The content is 95%-99.98%, the median diameter D50 is 30-50μm, and the particle size distribution meets the normal distribution curve;
[0031] 2) Granulation: use spray granulation technology to process the raw materials into the required particles, and the specific surface area is 20-35m 2 / g; The spray granulation technology is to use a pressure atomizer to atomize the solution or slurry material into fine droplets with the pressure of the diaphragm pump, so that the surface area is significantly increased, and the heat exchange with the hot air can be rapid Equipment for drying (ten seconds to tens o...
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Abstract
The invention relates to the filed of production of quartz ceramic rollers, and particularly relates to a production process of a static-pressure forming hollow roller. The production process sequentially comprises the following procedures: granular material grading, granulation, vibrating charging, cold isostatic compaction, demoulding, sintering, finish machining, assembly inspection and warehousing. The production process disclosed by the invention has the advantages that a reasonable mould is adopted, so that the raw material consumption is less, the heat loss of glass in application is greatly reduced, the defects of deformation and white smog of the glass are effectively prevented from being generated, and the product pull rate is increased. According to the production process, a cylindrical pin and a pin hole which are positioned on the right end of a ceramic roller body are in interference fit, a metal end sleeve is heated during assembly, the inner diameter of the pin hole is increased, and the ceramic roller body is assembled, so that the effect of close connection can be achieved after the metal end sleeve is cooled, and the difficulty in looseness is achieved; the binding force between the metal end sleeve and the ceramic roller body can be increased, and the purpose of thoroughly solving the problems of looseness and dropping of the metal end sleeve is achieved by virtue of the self stress of the metal end sleeve.
Description
Technical field [0001] The invention relates to the production field of quartz ceramic rollers, in particular to a production process of static pressure forming hollow rollers. Background technique [0002] Quartz ceramic roller is a key part of the glass tempering furnace, which plays a decisive role in the quality of tempered glass. In the continuous metal strip heat treatment furnace, the roller table plays the role of supporting and transporting the metal strip, which is directly related to the surface quality of the metal strip after treatment. At present, the roller table used in our country is basically the traditional carbon sleeve roller (ie graphite roller), followed by the heat-resistant steel ceramic coated roller. Carbon sleeve rollers are easy to oxidize at high temperatures and have a low life; ceramic coated rollers are prone to nodules at high temperatures and are prone to bursting due to the large difference in thermal properties between the coating and the sub...
Claims
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IPC IPC(8): C04B35/14C04B35/622B28B3/00B28B7/00B28B7/34
Inventor 陈德慧王肖林
Owner 浙江中硅新材料有限公司