In recent years, Yonghan Aviation Power Technology Co., Ltd. has been concentrating on the research and development of engines, Zhuhai Air Show has not participated, this year various news media have reported on the public products, but those military fans and ordinary people are unable to directly see the real thing.

Now Yonghan Aviation Power Technology Co., Ltd. finally has a product that can be used, and Yang Jie will naturally not miss the exhibition platform of Zhuhai Air Show.

Not only Yonghan Aviation Power Technology Co., Ltd. will participate in the exhibition this time, but also the fuel cell and motor rotor system jointly developed by Huaxing Group and Changhe Aviation Group Co., Ltd. will also exhibit samples, and the military has also passed the application for approval.

Yang Jie has great hopes for this air show, and each engine will be equipped with two exhibitors, one of which is a quarter cutting machine.

The so-called "quarter cutting machine" is based on the central axis of the engine, cutting the quarter to expose the internal structure of the engine, so that the details of the engine can be seen more clearly, especially some internal details.

For these exhibitors, Yonghan Aviation Power Technology Co., Ltd. is also urgently carrying out production, working overtime to produce a lot of large bypass ratio turbofan parts, and is now in the final assembly.

Hearing the news, Ma Qiulin and others couldn't wait to go to the assembly workshop.

After arriving at the assembly workshop, everyone gathered around a final assembly bench and carefully looked at the large bypass turbofan engine that was being assembled, and they all showed surprise.

This turbofan engine that is being assembled has a large head, a thin waist, and a small buttocks, and a typical large channel is more attractive than a turbofan engine.

"It's so beautiful, so exquisite!" He Yongqing said.

"Yes, I think the quality is super good at first glance!" He Zhipeng also nodded excitedly.

"Well, it looks good, it's very attractive!"

Ma Qiulin also nodded frequently.

The overall appearance of this engine is very good, both in terms of shape and specific details, and it is very beautiful and exquisite in terms of high-end and high-quality aero engines.

Yang Jie also said happily: "Yes, this is like the turbofan engine produced by our company!"

Seeing that the boss is very satisfied, Wang Yonglin is also full of smiles, although the exhibitor does not need to be verified, it can be installed directly, but his young boss requires parts, especially the appearance quality, must be processed very beautifully, and must not be rough.

In order to meet the requirements of the boss, the production workshop department below naturally did not dare to be sloppy.

"To see the final assembly of the first domestically produced large bypass turbofan engine, this time we came is really worth it, it is really exciting, and it makes people feel confident!"

He Yongqing said with some excitement.

He also knew that this large bypass turbofan engine was only an exhibitor, but Yonghan Aviation Power Technology Company could design and produce the main parts, and this technical strength was enough to shock the Chinese people.

"yes, it's definitely a milestone! It's a great sense of accomplishment to see how beautiful this big duct is compared to a bedroom engine. ”

He Zhipeng said excitedly that he was really happy that Yonghan Aviation Power Technology Company was able to design and produce such a large bypass turbofan engine.

Ma Qiulin and others were all happily and excitedly judging around this engine.

"The fly in the ointment is that there is still a lack of composite fan casing, which is a big guy, and it is very difficult to manufacture, and now the casing workshop is stepping up to work. ”

The fan casing, with a diameter of more than one meter and a half, is a large thin-walled cylinder, but this is definitely not a simple thin-walled cylinder, with a complex structure and a lot of precision mounting holes, bosses, mounting surfaces, etc.

The advanced nature of an aero engine is very good, and the comprehensive performance can be seen from the proportion of the engine in the use of new materials such as titanium alloy materials, composite materials, and ceramic materials.

With the development of technology, the aero engine began to appear titanium alloy materials, and the proportion gradually increased from less than 10% to 20% and 30% ......

At present, these overseas advanced aero engines not only widely use titanium alloy materials, but also use new materials more extensively, and the proportion of these materials even reaches more than 50%.

The turbofan engine of Yonghan Aviation Power Technology Co., Ltd. widely uses titanium alloy materials, as well as silicon carbide ceramic matrix composite materials, single crystal high-temperature materials, and powder metallurgy superalloys, which account for more than 50%.

Among them, the preparation technology of silicon carbide ceramic matrix composites was obtained from Ximenkang Company, which was originally used in thyristor products, and now it is used in the aero engine parts and casings of Yonghan Aviation Power Technology Company.

"Then let's go to your company's casing production workshop and have a look. Ma Qiulin said with great interest.

After a while, everyone came to the casing manufacturing workshop.

In order to manufacture the large bypass ratio turbofan engine casing these days, the casing workshop has been working several overnight and three shifts without stopping at all, in order to manufacture this part as soon as possible.

Several technicians who are responsible for the processing of the whole casing are only slightly relieved at this moment, and there is a sense of relief.

Several inspectors carefully inspected the casing with various measuring tools, and it could be seen that the casing was very beautiful and flawless.

The person in charge of the workshop and the process supervisor also reported to Yang Jie and others at this time.

At this time, He Zhipeng also saw that the process supervisor named Zheng Bing was holding a thick process specification in his hand, and every process on it was scribbled and changed, and a lot of things were written.

He couldn't help but sigh in his heart: Yonghan Aviation Power Technology Co., Ltd. is really meticulous in process management and requirements, even if it is only the production of such a two-piece product, but in the process of processing, a series of process problems found are recorded, this process specification will definitely be improved again, especially some process parameters and process steps will be perfected and improved.

This is where Yonghan Aviation Power Technology Company is really powerful!

Kang Jianlong, the director of the workshop, and Zheng Bing, the process supervisor, were a little excited when they saw Yang Jie accompany Governor Ma Qiulin and others over.

The test continued, and Yang Jie and others also came to the inspection platform to carefully observe the casing.

"This casing is really beautifully machined!"

Ma Qiulin said happily.

After a while, the inspection of the casing was almost complete.

"Director Zheng, this is the result of the inspection, the quality of the receiver is not bad, only a few general sizes are slightly unqualified. ”

An inspector said.

Zheng Bing took the inspection record and looked at it carefully, on several measured value record sheets, every size and every technical condition of this casing were recorded in detail one by one, and several unqualified sizes were specially marked.

Seeing that some important key dimensions and some important technical conditions were all qualified, Zheng Bing was also overjoyed, and hurriedly handed the inspection results to Yang Jie, "Yang Shao, the processing quality of the casing is good, only a few general sizes are unqualified." ”

Yang Jie looked at the inspection records with great interest, and said happily: "Yes, the important and key sizes, and the technical conditions are all qualified, which is very rare, this is just the first batch of fan casings we processed, and it can achieve such quality, which shows that you usually use a lot of thought." ”

A few general sizes are slightly unqualified, irrelevant, and do not affect the use of this casing, Yang Jie knows that this casing is installed on the exhibition machine, only for the exhibition, and he is quite happy in his heart.

Hearing Yang Jie's words, these people in the receiver workshop were all smiling.

"Your company's craftsmanship is truly remarkable, the first batch of only a few general dimensions failed to pass the standard, which was completely beyond my expectations. ”

He Yongqing said with emotion.

Ma Qiulin also took the inspection record handed over by Yang Jie at this time, looked at it carefully, and said happily: "Very good, it seems that the final assembly of your company's exhibitor can be successfully completed." ”

Yang Jie, who was looking through the record of the white paper process regulations, said to Kang Jianlong and others at this time: "You have done a good job, the records are also very detailed, and you have recorded the problems exposed in the processing process, it seems that you have spent a lot of thought." ”