Research on High Efficiency Cutting Technology of Aero Engine Blades

AVIC Shenyang Liming Aero Engine (Group) Co., Ltd. Yang Jinfa

The blade is an important part of the aero-engine. The main function of the blade is to cooperate with the engine cavity to form a continuous change of the air or gas cross-section and direction. Cooperate with the main shaft or the turbine disk to realize the high-temperature compression and easy gas flow of the gas generator, and at the same time ensure the gas. The high speed flow is converted into the required aircraft power. The functional mission and working characteristics of the blade in the engine determine the complexity of blade machining. The leading process uses advanced manufacturing processes. The difficulty in blade manufacturing lies in the fact that it is a thin-walled part with poor rigidity and is more sensitive to the overall rigidity of the tool-clamp-workpiece system. Modern engine blade machining is developing in the direction of efficient CNC machining.

1. Common materials for engine blades

The development trend of aviation blade materials is high performance (light weight, high strength, high modulus, high toughness, high temperature resistance, oxidation resistance and corrosion resistance) and low cost. Blade materials from aluminum alloys, stainless steels, titanium alloys to high-temperature alloys and new composite materials are constantly evolving as engine performance requirements continue to increase.

2. Characteristics of machine tool tools for airfare blade processing

The quality of the blade body profile directly affects the blade's working performance. Conventional blade processing methods are time consuming and labor intensive, and accuracy is difficult to guarantee. High-performance CNC milling machines are increasingly used in blade machining, with imported machine tools accounting for a significant proportion. The characteristics of this type of machine are as follows:

(1) Multi-axis linkage is generally 4-axis or 5-axis linkage, or more axis control based on 5-axis linkage and linkage control of composite machining.

(2) High-speed spindle blade high-efficiency CNC machining puts high demands on the spindle of high-performance CNC machine tools. High-speed spindles combined with high-performance tool systems can achieve efficient cutting of blades.

(3) The high dynamic response feed system requires high spindle speed in high-speed machining conditions, and also imposes high requirements on the speed and acceleration and deceleration of the feed shaft to ensure that the machine tool has rapid response capability.

(4) High stiffness, high precision spindle system, feed system and machine tool structure should have good static stiffness and dynamic stiffness as well as thermal stability.

(5) Intelligent intelligent machine tool control and intelligent process.

At present, the blade processing tool is mainly made of cemented carbide tools.

Compared with foreign companies, domestic high-end products of machine tool enterprises have gaps with foreign companies in terms of technology level and industrialization. Domestic machine tool companies want to make breakthroughs in the aerospace field, but also need to strengthen technological innovation, improve product quality stability, further improve the technical service system, and enhance core competitiveness.

 Aluminum Dihydrogen Tripolyphosphate(NATIONAL STANDARD)

PRODUCT NAME: ATP Aluminum Dihydrogen Tripolyphosphate

PRODUCT TYPE: Anti-corrosion Pigment

PRODUCT APPEARANCE: White Powder

CHEMICAL CLASS:AlH₂P₃O₁₀ Â· 2H₂O

CAS No．: 13939-25-8

PRODUCT APPLICATION: Aluminum tripolyphosphate(Aluminium Dihydric Tripolyphosphate), as a new generation of white antirust pigment made by Xinsheng Chemical, is the ideal substitute of toxic antirust pigments containing lead or chrome. It turns out through practical applications and test results by over 100 well-known coating material producers or researching institutes at home and abroad since it came onto the market in 1986, that this product is superior to such antirust pigments as lead red, zinc chrome yellow and Zinc Phosphate in rust prevention and practicality.

Modified Aluminum Tripolyphosphate is suitable for production of water paint while Aluminum Tripolyphosphate is suitable for oil paint. ATP is used in high-temperature resistant paints, wear resistant brake pads and Wheel slices.

TECHNICAL DATA

STANDARD PACKAGING:25kg/bag, Plastic-lined and plastic-coated woven bags or Composite paper bags.

TRANSPORT AND STORAGE

Protect against weathering. Store in a dry place and avoid extreme fluctuations in temperature. Special conditions for opened packaging: Close bags after use to prevent the absorption of moisture and contamination.

SAFETY

The product is not classified as dangerous under the relevant EC directives and corresponding national regulations valid in the individual EU member states. It is not dangerous according to transport regulations. In countries outside the EU, compliance with the respective national legislation concerning the classification, packaging, labeling and transport of dangerous substances must be ensured.

The information contained in the safety data sheet should be observed.

This contains information on handing, product safety and ecology.

Aluminum Dihydrogen Tripolyphosphate(National Standard)

Epoxy Aluminum Tripolyphosphate Primer,Aluminium Tripolyphosphate Atp,Water Paint Modified Aluminum Tripolyphosphate,Aluminum Dihydrogen Tripolyphosphate,Aluminium Dihydric Tripolyphosphate

shijiazhuang city xinsheng chemical co.,ltd , http://www.xsphos.com