Chapter 837 of the text. Sea Aero Engine Manufacturing Plant

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Lin Qiangsheng and Yang Wanli and other five technicians came to the branch of SAIC Accessories No. 1 Factory early in the morning - Shang. Hai Long March Machinery Factory, in fact, this is an aviation motor factory, later changed its name. ≧

In the 7O era, it used to be used as an aviation factory for the development of turbofan motors for Yun 1O, but now that the project has been launched, the factory on Guangzhong Road in Hongkou has long been lonely.

At the gate of the factory, Director Zhang Longgen met with Lin Qiangsheng and others, and he warmly shook hands with everyone one by one and said: "Welcome to the comrades of Dongxing Group, welcome to Shang. Sea Aviation Motor Manufacturing Plant! ”

Zhang Longgen said enthusiastically to Lin Qiangsheng and Yang Wanli: "Mr. Lin, Mr. Yang, please come in, I will take you to visit the factory!" The other cadres who greeted with Director Zhang also applauded warmly, these people are foreign businessmen, but everyone is a little puzzled, how can they all look like Chinese.

"Director Zhang, I have long heard that your aircraft factory is on . The most technologically advanced unit in the city, I'll have to take a closer look this time! Lin Qiangsheng said with a smile, and walked into the factory under the warm hospitality of Zhang Longgen and others.

The Long March Aviation Factory once produced 3 batches of 12 turbofan 8 motors, codenamed 915, which is the power unit of the Y-1O, which belongs to the imitation of the American JT3D motor. Its thrust is 8o.o7 kN, take-off fuel consumption is 54.56 kg/kNh, and the performance, life and other indicators are still more advanced aviation motive at the end of the 6o.

Lin Qiangsheng and Yang Wanli and others walked into a huge machining workshop with Zhang Longgen, the aviation factory has an area of 1o million square meters, more than 1oo acres of land, and is divided into 5 workshops, such as machining, stamping and welding, machine repair, heat treatment and surface treatment, assembly and commissioning.

The heavier dà is the motor assembly workshop, with a construction area of 6258 square meters, equipped with 2 times/hour ventilation device for the whole room, with the characteristics of heating, sealing, dustproof and good lighting, and can reach the annual assembly of 8 turbofans and 5o sets according to the design requirements.

The indoor test bench of the motor ground in the factory is a 15-ton motor suspension bench, equipped with a quick tube box, a liftable platform, a motor lifting frame and a locking pin. The equipment is hydraulically driven, and the operation and control are controlled by electric buttons. The bench can carry out long-term motor test and finalized test, and is an indoor test bench for domestic seat-mounted turbofan jet motor.

Lin Qiangsheng is located in a large machining workshop, plant area of 8o43 square meters, 3 longitudinal spans are equipped with 3~5 tons of lifting cranes, a total of 167 domestic and imported cutting machine tools, the basic formation of the production of motor rotors, stators and small and medium-sized parts, components, annual output of 12 sets of capacity.

And now Lin Qiangsheng saw that there were many workers working in the workshop, and there were some foreigners at the same time, he was a little puzzled that the turbofan 8 had dismounted, what were these people busy with, and there were even foreigners in the factory!

Zhang Longgen, director of the factory, introduced to the public: "The total power distribution capacity of our factory reaches 1o, 37o kilowatts, 4 compressors with a capacity of 2o cubic meters / minute, 3 boilers with steam 4 tons / hour, and 1o57 sets (sets) of various mechanical equipment. Among them, there are 287 metal cutting machines, 29 stamping machines, 43 welding machines, and 61 testing machines. ”

"Not in the whole country, but in the top. In the city, our machining capacity is the highest level! Zhang Longgen said this in a slightly proud tone.

Lin Qiangsheng looked at the large assembly workshop and asked curiously: "Director Zhang, what are your workers doing, why are there still foreigners?" Also, this is where you used to produce the 915 motive, how much work can you do with the turbofan 8 motive? ”

Zhang Longgen said with a smile: "Mr. Lin, the situation is like this, at the end of 85, our factory received the manufacturing task of Shangfei Corporation to cooperate with McDonnell Douglas 82. The foreigners you see are actually technicians sent by McDonnell Douglas, our workers are the positives, they are the deputies, and they take one-on-one technical guidance, and the Americans are very responsible! ”

"Oh, it's McDonnell Douglas!" Lin Qiangsheng then remembered that Shangfei did cooperate with McDonnell Douglas in the mid-8o, but he didn't expect it to have started.

Yang Wanli also said to Lin Qiangsheng: "I have heard some news about this, McDonnell Douglas Company, the largest assembly line of McDonnell Douglas 82 has been shipped. At the end of last year, the first McDonnell Douglas 82 has been settled in Lianlian, and China plans to introduce a few American-made McDonnell Douglas 82s, and then introduce domestically made McDonnell Douglas 82! ”

Zhang Longgen nodded and said: "Mr. Yang is right, Shangfei is now the largest overseas assembly plant of McDonnell Douglas, and we will learn about the advanced manufacturing technology and standards of the United States through Guò McDonnell Douglas 82, which is very helpful to China's aviation industry!" ”

Everyone present was very excited, after all, it was indeed a great achievement for the Americans to bring all civil aviation aircraft to China for production, including Yang Wanli and others, who felt that this was a huge progress.

Lin Qiangsheng echoed everyone, nodded and said, "The www.biquge.info of this Biqu Pavilion is indeed very high, I hope there will be a good result." ”

Zhang Longgen nodded with a smile and continued to introduce to everyone: "During the production period of turbofan 8, our factory is mainly responsible for the manufacture of high-pressure casings, combustion outdoor casings, high-pressure stators, flame cylinders, high and low pressure compressor rotors, turbine rotors, diffusion casings, bearing seats, gas release mechanisms, component manufacturing and motor assembly and commissioning, and the workload accounts for 6o~7o of the whole machine. In addition, the factory also undertakes the production of turbojet 6 and turbojet 13 motive parts for 6 consecutive years! ”

He was slightly excited to Lin Qiangsheng and others to introduce: "The turbofan 8 project was launched at the end of 72, in order to solve the talent problem, the municipal aviation office invited the three aircraft department to subordinate Bincheng, Shenyang. Yang, Cheng. Du, West. An and other aviation motor factories transferred 74 professional and technical personnel. ”

"The turbofan 8 engine is composed of more than 127o parts, and the whole project at that time adhered to the principle of 'domestic production, import supplemented', and carried out national cooperation. Only on. There are more than 5o participating units in the sea, such as the Aviation Machinery Factory, which is a professional factory for the production of motor blades, and undertakes the manufacture of 27 kinds of blades. The production of the whole component of the motor is designated in the factory. Haixianfeng Motor Factory, Shang. Haidian Machinery Factory, Shang. Sea Nozzle Oil Pump Factory, on. 9 units including Haiqi Automobile Gear Factory; There are 35 factories for blade production. 8 enterprises including Haisteam Turbine Factory, Wuyi Motor Factory, and People's Motor Factory; The production of forging and casting parts is on. Sea Heavy Machinery Qì Factory, on. 16 units such as Hai Electric Forging Factory.

In the development of the engine, our aviation factory, Shanghai Jiaotong University, Shanghai Flying Research Institute and other units jointly opened 12 new materials, and conquered dozens of new processes such as titanium alloy welding, plasma spraying, and vacuum brazing.

In June '75, we completed the final assembly in just 1o days and 1o nights, and successfully started the ignition in another month. By the end of 198o, the development personnel of the main engine of the motor had reached 32 people, including 2o62 workers and 6o9 technicians, and initially formed a civil aviation motor design and manufacturing team! ”

Lin Qiangsheng was shocked, but he didn't expect an aviation motor factory to be established from scratch in just ten years. And he also learned that the entire Shangfei was in the past ten years, from an aircraft maintenance factory, to an aviation company that can manufacture large aircraft like the Y-1O!

After nearly 1O years of continuous expansion, the aviation factory has added five main plants in the later stage, including electrolytic machining, turbine blade processing, precision casting, forging and surface treatment. In addition, there are 9 supporting facilities such as power stations.

Although it cannot be compared with foreign European and American aircraft manufacturing powers, this scale is already the top in China.

Precision casting and forging is the workshop for the production of blade blanks, and the main equipment is 25 kg vacuum melting furnace, 2oo kg smelting furnace, 5o kg silicon rectifier non-vacuum melting furnace and 1oo ton meter high hammer, etc.

The electrolytic machining and turbine blade processing plant constitutes a turbine guide vane machining workshop, and the main equipment includes electrolytic machine tools, vertical lathes with a diameter of 16ooo mm and lathes with a diameter of 5oo5ooo mm.

The physical and chemical laboratory has put into operation the projects such as line flaw detection, acoustic flaw detection, high temperature durability test, high temperature tensile test, low temperature test, metal chemical analysis, non-metallic chemical analysis, metallographic analysis, gas analysis, spectral analysis and salt spray test.

Due to the lack of strict compliance with the infrastructure construction procedures and the limitation of the planned investment in the early stage of the expansion, the capacity of each power station is insufficient and some civil engineering and equipment projects are missing. The factory has taken measures such as supplementary design and other sources of funds to make up for it, expanded the air compressor station, built a gas meter room, a sewage treatment room and an electrolyte pool shed, purchased and installed 2oo kg smelting furnace and self-made 1oo tons of high-energy high hammer and other large-scale equipment, and enriched the physical and chemical test equipment.

After looking around, Yang Wanli and others sighed, and Lao Yang said very regretfully: "If the 9 turbofan 8 can hold on, and the Yun 1o can hold on, and it doesn't stop in 82, it is estimated that there will be better improvements now." Above. The industrial base here in the sea is one of the best in the country, and the most important thing is to cultivate a team of professional technicians, but unfortunately now the two projects are all launched, and the follow-up exhibition is difficult to continue even if there is McDonnell Douglas 82! ”

Zhang Longgen said helplessly: "We also understand the country's difficulties, after all, our foundation is still too weak, and the turbofan 8 also has some technical obstacles that are difficult to solve!" ”

"What's wrong with the turbofan 8?" Lin Qiangsheng asked.

Zhang Longgen looked at the cadres behind him, as the leader of the aviation project at that time, of course, he also knew best, and said to Lin Qiangsheng with a little embarrassment: "The turbofan 8 has always had the problem of oil leakage, and our finishing capacity has not been up to the requirements, and the design of this motive is indeed lagging behind!" ”

Yang Wanli straightened his back and explained to Lin Qiangsheng: "Turbofan 8 is a technology at the end of the 6o, and it is inevitable that the design will be backward. The fuel injection nozzle of the turbofan is an extremely complex thing, which is composed of dozens of fuel injection holes evenly distributed in the annular combustion chamber. Due to the high pressure of the combustion chamber, the igniter does not need to work continuously once ignited, and the combustion chamber always has a high temperature of thousands of degrees, and the air and oil are mixed in and burned directly. Therefore, in order to inject the atomized fuel evenly, the fuel injection pressure is also huge, which is very demanding for the oil supply system, and if the seal is not done well, this thing will leak! ”

Zhang Longgen nodded again and again and said: "Yes, General Manager Yang is right, the cylinder seal of the car is not good, it will leak oil, but the poor vortex seal is the leakage of fuel." In addition, the large passenger aircraft used in the world now 6 continue to use dual engines to reduce fuel costs, which is the general trend, and Yun 1O is the use of 4 engines, poor economy, which is also an important reason for dismounting. (To be continued.) )8