Connecting structure and method for ceramic and metals

Abstract

The invention discloses a connecting structure and method for a ceramic and metals. The structure comprises a ceramic supporting roller bar and steel heads installed on two ends of the ceramic supporting roller bar, the ceramic supporting roller bar and the steel heads are connected through spring pieces, and each spring piece has a polygonal structure; and one end of each steel head is recessed inwards to form one first groove, the side wall of each first groove is provided with one second groove, each spring piece is connected with the interior of one corresponding second groove, and one inscribed circle of each spring piece has a diameter smaller than that of each first groove. The method comprises the steps of separately preparing the ceramic supporting roller bar, the steel heads andthe spring pieces and performing combination. The structure provided by the invention is easy to manufacture and install, the quenched and tempered polygonal spring pieces are used, so that the contact area and frictional resistance are increased, the steel heads always maintain clamping force, and the technical problem that a ceramic supporting roller bar component is easy to loosen in the environment with larger temperature change is solved; and adhesives are not used, so that pollution to the environment is reduced, and physical and mental health of workers is facilitated.

Description

technical field [0001] The invention relates to the connection of ceramics and metals, in particular to a connection structure and method of ceramics and metals. Background technique [0002] Among contemporary engineering structural materials, metal materials have excellent properties such as good thermal conductivity, strong plasticity, and easy processing, but their properties such as high temperature resistance and wear resistance cannot meet the increasing production needs; ceramic materials have high strength, high hardness, It has excellent properties such as high temperature resistance, wear resistance and corrosion resistance, and good thermal shock resistance, but its high brittleness and difficult processing properties limit its application range. Connecting ceramics and metals can take advantage of both. [0003] There are many ways to join ceramics and metals, such as brazing (after metallization), diffusion bonding, mechanical bonding and adhesive bonding. Ho...

AI Technical Summary

Problems solved by technology

However, due to the huge difference in the chemical bond structure of ceramic materials and metal materials, and the difficulty in wettability of ceramic and metal materials, it will be difficult to realize the connection between the two.

Adhesive connection method is currently the most commonly used method for connecting ceramics and metals, but the adhesive will harden after curing, and cannot expand with the thermal expansion of the steel head to compensate for the gap caused by thermal expansion, and because the adhesive is Chemical products, when injected, will produce peculiar smell and leakage, which will not only have a negative impact on the health of workers, but also is not environmentally friendly; in addition, there is basically no problem using the adhesive connection method under normal temperature conditions, but when the temperature changes in the working environment It is difficult to meet the requirements of use under relatively large conditions. Sometimes the injection of high-temperature glue will cause unsaturation, resulting in a reduction in the bonding area, thereby reducing the bonding force.

At present, there is a method of stamping protruding points on 0.4 mm thick 301 stainless steel strip steel, but because it has not been quenched and has no rebound effect, it is easy to loose for a long time

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