A vacuum high heat transfer anti-adhesion stable cushion and its preparation process

Abstract

The invention discloses a vacuum high heat transfer anti-adhesion stable cushion layer and its preparation process. The cushion layer sequentially includes a bearing base layer, an adhesive layer and an anti-sticking layer from the inside to the outside, and the bearing base layer has a grid size of 0.6 mm. ×0.6mm~1.7mm×1.7mm, glass fiber cloth layer with a thickness of 0.1mm~2mm; the adhesive layer is a paraffin layer with a thickness of 0.01mm~0.6mm, the anti-adhesive layer is a compound oxide layer, and the cushion layer has good strength And physical properties, high chemical stability, can ensure no chemical reaction with molten metal, ensure product quality, and have good heat permeability; the invention also discloses a vacuum high heat transfer anti-adhesion stabilizing pad The preparation process of the layer has the advantages of simple process flow, easy control, low power consumption, and easy industrial production. The invention is applicable to smelting at 800-1700°C, and is used for barrier and anti-adhesion with other metals in the smelting process.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment supplies, and relates to a cushion layer and a preparation process thereof, in particular to a vacuum high heat transfer anti-adhesion and stable cushion layer and a preparation process thereof. Background technique [0002] In the production of metallurgical industry, the adhesion phenomenon between products and production equipment and between products has always been a common factor that plagues product quality and even causes safety production accidents. Most of them involve a high temperature environment above 1000 °C. At this temperature, it is easy to form a eutectic between metals, which makes the phenomenon of "welding" between products and products, products and production equipment. The appearance of this phenomenon not only affects product quality. At the same time, it will also cause certain damage to the equipment and form a safety hazard. [0003] Because most of th...

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Problems solved by technology

[0002] In the production of the metallurgical industry, the adhesion phenomenon between products and production equipment and between products has always been a common factor that plagues product quality and even causes safety production accidents. Most of them involve high-temperature environments above 1000°C. At this temperature, eutectics are easily formed between metals, causing "welding" between products and between products and production equipment. This phenomenon not only affects product quality. At the same time, it will also cause certain damage to the equipment, forming a safety hazard

[0003] Traditional anti-adhesion coatings are mostly liquid organic substances, which are easy to volatilize or even directly react with metals at high temperatures, so it is difficult to apply in metallurgical industry production

The more effective anti-adhesion measures currently used are to use oxides with a porous structure to prevent the contact between metals. Most of the materials used in this type of method have a relatively large thickness. It has an adverse effect. This is because most of these materials are thermal insulation materials with a low heat transfer coefficient. The equipment needs to provide higher heating power to ensure the normal operation of the production process, which brings unnecessary energy to the production enterprise. Consumption, increased production costs

In addition, because some metals have high chemical activity at high temperatures, they can replace metal ions in oxides such as alumina and magnesia, and form impurities in the product, which directly affects the quality of the final product. Therefore, this There are still many defects in the method, which affect the application in actual industry

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