Although Hulu no longer has anti-theft protection, I hope that those who are capable will subscribe. If you don’t have anti-theft protection, you will indeed lose the subscription. You will not be able to prevent theft protection in the future. However, if the subscription is low, you will definitely not have too much power code, let alone the explosive update.

"If you want to build it, build a larger engine manufacturer with complete supporting facilities and complete equipment. This is an aircraft engine, not the kind of small motorcycle engine that Factory 32 provides to Jialing Factory." The Management Committee of the Ninth Academy has a passion beyond Liu Yijiu's imagination in this matter.

Wang Shunyi and others really hope to build a good power plant by themselves.

"The original Air Force Four Station Factory now only produces some supporting airports to clean cars, nitrogen recharge cars, etc. For us, there is no need to build a factory and put it directly on the 54th base. If it really doesn't work, it will be integrated into a workshop, and the area around that area is also large."

Wang Yueshan is very concerned about the ability to set up a power workshop outside.

In this way, a group of people from the mountains can be moved out.

At the same time, in the mountains, although all kinds of supporting facilities are perfect, they are not convenient in the city, especially the small area in the mountains, which cannot meet their development at all. Helicopter assembly requires a huge area, and the manufacturing of power equipment also requires a huge area.

"It's not just an aircraft engine, but also a gas turbine. Of course, it's best to cooperate with Dongqi." Liu Yijiu's ambition is obviously not small.

In the next few decades, there will be many coal-fired power, natural gas power plants and oil power plants in the Republic.

A huge number of gas turbines are needed.

"Okay, that's it, so Comrade Wang Yueshan will be responsible for the matter. Xiao Liu is still mainly focused on the production of turbofans. He must make a round of effort to get out the engine, formulate a complete production process, and conduct inspections during the production process. Whether the new generation of fighter jets in the Republic can soar in the air depends on this engine project." Long Yaohua was also here.

The military is very concerned about the turbofan that has already been released.

Especially when imitating the third-generation advanced fighter Panda F4, the United States, worked smoothly. The engine has become a big problem. How can they not make them anxious to get angry?

Even if the Republic Air Force cannot purchase too much, it must at least have production capacity.

The current J-8 ii and J-7 have too small combat radius, and the ammunition load capacity is too small.

"This is no problem. After all, we have experience in producing turboshaft engines and other things." Zone 1 was originally in charge of technical reserves in power and helicopters. The entire Ninth Academy did not have technical reserves for fighter jets or other aircraft, because the Third Line Factory established several aircraft manufacturing plants in the Qinling Mountains and the Rongcheng Plain.

Liu Yijiu ignored these things and devoted himself to engine production again.

Production is very important now, and whether these problems can be solved. It is related to whether the imitation panda fighter can fly into the sky, and it is more important to the success of the first domestic third-generation fighter J-10.

The other is not a problem. Although the large-scale use of titanium alloys increases a lot of costs and processing is also a huge difficulty. We are now working to solve these problems.

The construction of the power plant will make the research work in power technology in the Ninth Institute and even the entire China faster.

From the initial high-temperature and high-pressure powder metallurgy to manufacture various parts of the engine, then to forging, heat treatment, machining, and various process processes, Director Liu Yijiu learned a lot.

Originally, he would have thought that the problem of the turbofan engine would occur in the assembly process. After all, in order to ensure performance, the entire engine must ensure assembly accuracy. Level 2 fan impeller requires that the coaxial degree be within 000 after assembly. This has higher requirements for the assembly process.

What's more, the current assembly is mainly manual assembly, and automated mechanical equipment does not have much effect in assembly work.

In order to ensure accuracy, Jiuyuan and Factory 32 have mobilized the top eight-level and nine-level fitters. Even if the level 2 fan impeller cannot reach 000 mm accuracy after assembly, it cannot exceed 0005 mm at least. Otherwise, the performance, service life of the engine, etc. will be affected. How serious is it, I don’t know yet.

However, what Liu Yijiu didn't expect was that before the assembly process had arrived, problems arose again.

The welding work of the impeller and the welding work of other parts of the engine are simply unable to ensure stable quality.

"Director Liu, this is not because we don't work hard. We use the same tooling and the same method every day, but the quality of the welds processed is inconsistent." Huang Ying, as the best-skilled person among the entire welders, cannot control the processing quality of the welds.

"Is there any place to analyze the problem?" Liu Yijiu asked with a frown.

Since the last selection, the welding in the pressurized chamber has started directly.

In the past few days, more parts welds have been compared, and people inside discovered that although these welds are much better than the quality of using argon arc welding on the outside, they are not enough for quality supervisors.

They hope to achieve a more stable quality, thereby determining the manufacturing process.

"According to our analysis, the main problem may be that the purity of argon is not enough," Qi Hai said embarrassedly.

"The purity of argon is not enough, so let them improve their purity. You can't let me solve everything, right?" Liu Yijiu's brows frowned even more. "Is there any problem in the middle?"

"Director Zheng said that their technical level is just like this."

Liu Yijiu rolled her eyes when she heard this.

What does this guy Zheng Hao want to do now

Didn't he agree to continue to expand production

"We have no choice but to do this problem. We do not have too strong technical capabilities. Moreover, argon is a by-product in the production of oxygen, and extraction is not too easy." Zheng Hao also has difficulties.

Liu Yijiu gave him a blank look, "I don't care about you. No matter what the inside story or the difficulties there are, I will tell me in the future that the purity problem must be improved within a week, even if the cost increases, there will be no problem."

Only high-purity argon can ensure high-quality welds.

"Maybe there is also the problem of your pressurization chamber," Zheng Hao said dissatisfiedly.

However, this reminded Liu Yijiu.

When the work chamber is filled with argon, the air inside is not discharged, and the workers also did not discharge the air when waiting outside the pressurized chamber. At the same time, some exhaust gas generated by high temperature during welding is also in the pressurized chamber.

"The changes in the density of argon gas in the cabin must be detected. At the same time, we have to find a way to extract the argon gas inside every once in a while for purification. Otherwise, the quality problem will not be solved at all." Zheng Hao's complaint was originally unintentional, but Liu Yijiu remembered it.

After checking the argon gas quality in the pressurized chamber and the working chamber, it was found that this made the purity of argon gas, which was originally insufficient, worse.

"The purity of the argon gas produced in the oxygen production workshop of the four stations must reach 9999, and the purity of the argon gas in the work chamber must be 999. When the person is replaced, the air outside should be discharged as much as possible." After discussion with Qi Hai and others, Liu Yijiu quickly came up with a solution to the problem.

After replacing the high-purity argon gas, and ensuring the purity of the argon gas inside, the effect will be obvious all of a sudden. The welded weld can at least ensure that the welds welded by each worker are consistent.

After solving these problems, Liu Yijiu once again devoted his energy to the assembly of the engine.

The problems in the processing process cannot be solved in a short period of time.

When the technical strength has not been improved, the experience has not been accumulated enough, and the material technology has not been developed properly, it is absolutely impossible to study machining tools that can improve efficiency in a very short time.

In the current situation, we can only use time to slowly pile up these parts and products.

Even the United States and the Soviet Union, which had strong processing capabilities, were helpless when facing difficult-to-process materials such as titanium alloys. Otherwise, the United States would not eventually allow f5, f6 and f to replace f4. The use of large quantities of f4 with titanium alloys not only requires high maintenance requirements, but also increases too much processing cost.

The 0 F4s sold by the US to Iran were sold for $0 million

Although, the production cost will be much lower.

The manufacturing cost of a F4 will be at least over 30 million US dollars, or even higher

Su27, its performance is actually not as good as F5 and F6, but the manufacturing cost per aircraft is also more than $23 million, and the export price is 33 million. If it is replaced with a US avionics system and radar, the price of this thing will probably exceed $50 million.

It is not easy to produce a fighter jet.

Now producing an engine makes Liu Yijiu feel overwhelmed.

Compared to their era of advanced technology and strong manufacturing capabilities, these issues are not needed to be considered.

Especially now, the assembly is even more damn.

The service life of the turbofan is not high when tested on the air platform. Another reason is that the engine assembly cannot achieve accuracy, and the detection method is not up to standard.

Liu Yijiu discovered the problem after going deep into these tasks.

It is a miracle that the problem of inability to ensure assembly accuracy and the detection problem of assembled engines are not solved. Even if the turbofan is manufactured, it cannot reach a service life of 500 hours. It can exceed one hundred hours.

To be continued.
Chapter completed!