Design,Preparation And Properties Research For Ceramic Disc Spring

Spring is widely used in a variety of mechanical devices as a commonly mechanical components.In general,spring manufacturing materials are metal,but with the development of mankind,the use of the spring requirements are getting higher and higher,metal springs have been unable to meet it,the emergence of ceramic springs just to solve these problems.CoMPared with the metal spring,ceramic spring with high temperature and corrosion resistance advantages,coMPared with other non-metallic springs,ceramic springs with the advantages of high wear resistance.However,due to the characteristics of ceramic brittleness,resulting in ceramic spring molding more difficult.At present,more research is about ceramic coil spring,but little progress has been made.We propose a new idea: use of ceramic injection molding method to manufacture ceramic disc spring.In this paper,the relationship between the disc spring structure and the performance of the disc spring is studied by means of theoretical calculation and finite element simulation.The sintering temperature of the green body was determined by studying the effect of the sintering process on the performance of 3YSZ.Finally,the effect of injection temperature,injection pressure and sintering temperature on spring performance during injection molding was studied.The effect of combination method on spring performance was also studied.The main conclusions of this paper are as follows:The performance of the disc spring is closely related to its structure.When the inner diameter of the disc spring becomes larger,the maximum pressure and the maximum deformation are reduced;.The width of the support surface has no obvious effect on its performance.The effect of the inner diameter of the groove in the disc spring is opposite to that of the inner diameter.When the depth of the outer ring of the disc spring is increased,the maximum stress of the disc spring is increased first and then unchanged,and its maximum deformation is unchanged.This paper mainly studies the effect of sintering temperature on the performance of 3YSZ.At the sintering temperature of 1500 ?,the crystalline transformation of the material is completed and almost all is in the form of tetragonal phase.With the increase of sintering temperature,the density and flexural strength of the samples increased first and then decreased,reached the maximum at 1500 ?,.Fianlly,we determined that the optimum sintering temperature was 1500 ?.With the increase of the injection temperature,the characteristic curve,the maximum bearing capacity and the maximum deformation amount of the conical spring are basically the same.With the increase of the injection pressure,although the characteristic curve of the conical spring does not change,the maximum bearing capacity and the maximum Deformation of the increase;sintering temperature of 1500 ? when the spring the best mechanical properties,the maximum pressure of 94 N,the maximum deformation of 0.82 mm.When the disc spring is combined with the compound,the compound or the compound way,the change trend of the characteristic curve is not big.When the disc spring is combined in a superimposed manner,with the increase of the number of springs,the maximum pressure of the spring increases and the maximum deformation does not change.When the disc spring is combined with the combination,with the increase of the number of springs,The maximum deformation increases and the maximum pressure remains essentially constant;when the disc spring is combined in a composite manner,the maximum pressure and the maximum deformation are increased.