Airplane engine heat exchanger guiding-tube bend filling and technique

Abstract

The invention discloses a bending filler and technique of heat exchanger conduit of airplane motor in the machine making domain, which comprises the following steps: allocating raw material proportionally; putting disodium phosphate and sodium bicarbonate in the autoclave; blending 2h; adding stablizier and reinforcer; packing the allocated fill; sealing to reserve. The filling technique of conduit product comprises the following steps: weighing the filler; controlling the temperature after the filler is fused; entering into the working condition; filling the conduit. The cleaning technique is characterized by the following: placing the moulded conduit into cleaning groove; injecting the tap water to heat and stir; controlling the water temperature between 80 and 90 deg. c for 20-30 min; fetching the conduit; draining the solution; repeating 5 times; fetching the conduit to dry; finishing the cleaning process.

Description

Technical field: [0001] The invention relates to an aircraft engine heat exchanger duct bending filler and a process in the field of aircraft engine manufacturing and machinery manufacturing. Background technique: [0002] At present, aircraft engine production and maintenance companies in the domestic and foreign transportation industries undertake the important task of overhauling dozens of aircraft engines every year. The maintenance and overhaul of each aircraft engine requires the replacement of some key components, including aircraft engine heat exchangers. etc., the country spends a lot of foreign exchange every year to import this key component. As one of the key parts to be replaced in aircraft engine overhaul, the heat exchanger has 64 heat exchangers for each engine, and its main function is to reduce the air temperature of the high-pressure compressor. The material of the heat exchanger is seamless high-temperature alloy thin-walled tube GH648, and the specifica...

AI Technical Summary

Problems solved by technology

The traditional process can only meet the requirements of general metal materials and low process standards, and there are many difficult problems to solve

For example, the sand filling process has the problem of sand damage to the inner wall of the alloy conduit; the forming process is likely to cause strain and wrinkles on the surface of the metal conduit; the rosin filling process has unstable bending properties of the metal conduit, and the remaining rosin on the inner wall is not easy to remove. At the same time, remove the rosin Organic solvents are required, causing adverse effects on the human body and the surrounding environment

Due to the shortcomings of traditional old technology, it directly affects the research and development of new products of aircraft engine manufacturing enterprises

For the strict technical standards of the heat exchanger of the other part of the aircraft engine, practice has proved that the traditional tube bending process can no longer meet the technical requirements of the other part