Organic silica gel PDMS based aeroengine bearing totally-enclosed packaging method

Abstract

The invention discloses an organic silica gel PDMS based aeroengine bearing totally-enclosed packaging method, belongs to the technical field of high-precision bearing storage and transportation packaging, and solves the problems affecting the quality of an aeroengine bearing. The method includes the following steps: repeatedly wrapping a transparent strip-shaped polyethylene film around the bearing through a bearing central hole to completely wrap the bearing; casting a mixed solution of liquid organic silica gel PDMS and a curing agent having a thickness of not less than 30 millimeters at the bottom of a mold to form a bottom cushion after the mixed solution is solidified, wherein the mold is a cylindrical container; placing the bearing completely wrapped in the polyethylene film flat onthe bottom of the bottom cushion formed in the mold, and casting the mixed solution of the liquid organic silica gel PDMS and the curing agent into the mold to more than 30 millimeters over the bearing completely wrapped in the polyethylene film to form a completely wrapped buffer layer after the mixed solution is solidified; and demolding, or adding a cover on the mold to use the mold as an outer package. The organic silica gel PDMS based aeroengine bearing totally-enclosed packaging method is used for bearing packaging.

Description

technical field [0001] The invention belongs to the technical field of high-precision bearing storage and transportation packaging, and in particular relates to a fully-enclosed packaging method for aero-engine bearings based on organic silica gel PDMS. Background technique [0002] Due to the particularity of its application field, bearings for aero-engines make its manufacturing process complex and require high surface quality, resulting in high prices. At present, domestic and foreign manufacturers have reached the extreme level of manufacturing and processing of high-precision bearings, and the pass rate of products in the factory inspection is very high. However, few manufacturers or scientific research institutions pay attention to the adverse effects. In the process, there are many accidents that cause damage to the bearing and cause it to be scrapped, resulting in greater waste. At the same time, due to strategic considerations, the bearings used in aero-engines als...

AI Technical Summary

Problems solved by technology

[0002] Due to the particularity of its application field, bearings for aero-engines make its manufacturing process complex and require high surface quality, which leads to high prices.

At present, domestic and foreign manufacturers have reached the extreme level of manufacturing and processing of high-precision bearings, and the pass rate of products in the factory inspection is very high. However, few manufacturers or scientific research institutions have paid attention to the adverse effects. In the process, there are many accidents that cause damage to the bearing and lead to its scrapping, resulting in great waste.

At the same time, due to strategic considerations, the bearings used in aero-engines also need to have a certain amount of storage inventory. At present, the commonly used plastic film vacuum packaging has its own inherent defects. The air permeability of the film material is measured in m 3 / m 2 KPa·h shows that the amount of gas permeation increases with time, so this packaging method will definitely fail after long-term storage, causing the bearing to be scrapped due to rust

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