Airplane engine fuel oil total pipe bend filling and technique

Abstract

An airplane engine fuel manager bending filling and its craft in machinery manufacturing field are provided. The product preparing craft is correctly weighing material weight by proportion, adding the disodium hydrogen phosphate, trisodium phosphate, sodium bicarbonate by proportion into the material preparing vessel, fully mixing for two hours, adding stabiliser, seal preserving the prepared filling packing. The filling craft of the conduit product is weighing the fillings, enterring the working state after the filling melting achieves the controlling temperature, performing the conduit filling craft. The cleaning craft of the bending conduit product is putting the moulded conduit into the cleaning groove, emitting tap water, heating and stirring, controlling water temperature of 80-90 DEG C for 20-30 minutes, taking out conduit, discharging the water solution, repeating 5 times, taking out conduit and drying. The product and the craft is scientific and novel and has a low cost, a stability to the alloy conduit material non-erosion, alloy conduit bending filling easily being cleaned, and alloy conduit bending filling packing craft.

Description

Technical field: [0001] The invention relates to an aircraft engine fuel oil main pipe bending filler and a process in the field of aircraft engine manufacturing and machine 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 needs to replace some key components, including aircraft engine fuel oil. Managers, 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 engine fuel main pipe is made of seamless high-temperature alloy pipe GH3044, and the pipe specifications are Φ8×1mm and Φ14×1mm. The engine fuel main pipe has a complex structure, and the pipe bending and welding process requirements are strict. technical characte...

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 pipe; the forming process is likely to cause strain and wrinkles on the surface of the metal pipe; the rosin filling process has unstable bending performance of the metal pipe, and the remaining inner wall of the rosin 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 engine fuel manifold, another part of the aircraft engine, practice has proved that the traditional pipe bending process can no longer meet the technical requirements of the other part