A Method of Using Inorganic Glue to Improve the Uniformity of Wall Thickness of Magnesium Alloy Superplastic Inflatable Forming

Abstract

The invention relates to a method of improving the uniformity of the wall thickness of a magnesium alloy superplastic gas bulging formed piece by utilizing an inorganic adhesive. The method concretelycomprises the following step of utilizing multiple inorganic adhesives with different viscosities, or coating different deformation areas of a magnesium alloy bulged piece with the inorganic adhesivewith different thicknesses and same viscosity, wherein the deformation rates of different deformation regions are homogenized through the "adhesion" effect of the inorganic adhesive, so that the improvement effect to different wall thicknesses of magnesium alloy is achieved; a selected type of the inorganic adhesive is a double-component adhesive, a component A is water glass, and a component B is formed by mixing and sintering silica, alumina and the like; and by changing the content of the water glass, the adhesives with different viscosities can be obtained. By adopting the method of the invention, the problem of unevenness in wall thickness of a magnesium alloy plate caused by factors including plate instability, unevenness in stress, different thinning rate and poor die adhering effect in the magnesium alloy high temperature gas bulging forming process can be solved, the formation effect of the process is further improved, operation is simple, realization is easy, the cost is lowered, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of scientific research of metal materials, in particular to a method for improving the wall thickness uniformity of magnesium alloy superplastic inflatable forming by using inorganic glue. Background technique [0002] The research on superplastic forming technology is mainly carried out by universities and aerospace research institutes at home and abroad, and it is mainly used in the aerospace field. Aerospace technology is the embodiment of a country's national defense strength. The transformation and development of its technology has an important role and significance for the development of national defense strength. One of the difficulties in aerospace technology is the material and its forming technology. Superplasticity is a special behavior of plastic deformation of materials. Generally, if the following characteristics can be met, it can be considered to have certain superplasticity: ① extremely low strain rat...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for improving the uniformity of the wall thickness of magnesium alloy superplastic inflatable forming by using inorganic glue, so as to solve the problem of plate instability, uneven force and thinning in the process of high-temperature inflatable forming of magnesium alloy. The phenomenon of uneven wall thickness of the sheet metal caused by factors such as different ratios and poor molding effect, further improves the forming effect of the process

Images