Super military empire

The pressurized cabin had such a large military use. After Long Yaohua repeatedly confirmed, he did not stop Liu Yijiu from conducting such a test the next day.

The only inconvenience is that people who enter it need to wear a breathing mask. Otherwise, they will suffocate due to lack of oxygen. The pressurized chamber is filled with high-concentration argon. Otherwise, there is no need to wear a breathing mask.

"Really nothing?" Early the next morning, Long Yaohua asked Liu Yijiu again with bloodshot eyes.

"Chief, don't worry, if there is any problem, you can completely relieve the pressure of the pressurized cabin outside. After all, there is only two atmospheres, and there will be no major problems." Liu Yijiu knew that Long Yaohua was out of this. I didn't say anything about my concern.

The explanation is already explained.

Only when it proves that there are no problems, can the country strengthen its research on pressurized cabins and start research on soldier training at the same time.

When Liu Yijiu arrived at the welding experiment workshop where the pressurized cabin was located, the people from the 132 factory were here. A group of people were discussing. When Liu Yijiu arrived, many people had a single face. ridicule.

These chiefs have become accustomed to being pampered, especially since Zhao Liangbi didn't say anything about their behavior yesterday, so naturally everyone would have no more reservations.

The mocking smile, the contemptuous eyes, and the good mood are all revealed by them.

Even the five female welders who fainted yesterday appeared in the crowd with pale faces.

They have been eliminated, but they will not be reconciled. It is necessary to see how long Liu Yijiu can stay inside without wearing protective clothing.

Skilled workers are like this. They will only obey them if they are conquered technically and by the things they do.

Otherwise, it is really not easy to manage.

"You are all welders with good skills. Today we changed our method and welded inside!" Liu Yijiu didn't care about everyone's comments, nor did he care about everyone's complex expressions. Instead, he directly declared that these male welders Selection criteria.

It is really unexpected to do homework inside without the slightest training.

"Director Liu, do you want to weld some scrapped parts, or?" Huang Qiaosong did not expect that Liu Yijiu said that at first.

Liu Yijiu glanced at Huang Qiaosong, then looked at other people, and said calmly, "Welding the engine parts! We don’t have time to waste. I will personally supervise this matter. If they can’t work, I’ll change. Of welders are also capable of such a job!"

"Who said no? I'll follow you!" Huang Ying, who was still pale, was very disdainful to Liu Yijiu.

Although she was on the verge of a coma yesterday afternoon, she was collapsed when she came out. After drinking water and rested all night, she is still weak, but she is not willing to be eliminated like this.

"You can't, let's talk after you rest!" Liu Yijiu shook his head, it was impossible for Huang Ying to go in for homework.

"You, who will come?" Liu Yijiu turned his head and asked the many workers.

"I!"

"I!"

"I!"

...

With a series of answers, the remaining 14 male welders stood up. They were not for the assessment, because they had given up. As long as Liu Yijiu could stay there for a few hours, they could be convinced.

Sometimes, the performance of the leadership plays a very important role for the entire unit.

"The best technology comes out." Liu Yijiu did not say anything, but directly let them come out. "This time we will directly use welding for selection! You know the difficulty of manufacturing these things, and you know the value, I hope not Those who are sure, don’t come in. Scrap is not a problem, but it will affect the progress of our fighter test flight."

"I am the most suitable!" Huang Ying did her part.

"Go aside! Now there is no time to joke." Liu Yijiu didn't say any women walk away now, otherwise these tigresses would explode.

It has already aroused the enthusiasm of the people, and finally if they add fuel to the fire, even if they can't do anything to themselves, it will not be worthwhile.

In the discussion of more than ten welding workers, four welders were selected, all of whom were in their thirties, not in their forties. They belonged to the younger and experienced welders in the selection process.

Liu Yijiu didn’t say anything. He pushed the parts to be welded into the middle of the work area with a trolley, placed them on the two workbenches, and then applied pressure directly to the work area. When the work area was pressurized, he also I have brought a special breathing mask, which is also connected to the outside with a tube.

There is no difference between the breathing mask and the hood of the protective clothing. The welding goggles are used in the eye mask, which is much more agile than wearing heavy protective clothing.

The blades of superalloy, the impeller of superalloy, and the parts of titanium alloy are all placed on the workbench of the pressure chamber in a specially made logistics trolley. The blades precisely processed by the machining center are shining in the light.

Liu Yijiu, who only wears a breathing mask, is very conspicuous inside. Since the breathing tube of the protective suit is connected to the outside, you must be careful when working inside, not to move randomly, and not to let the welding occur. The high temperature burns the tube, otherwise there will be problems.

The first group of four welding workers selected, entered together with Liu Yijiu. In an environment of two atmospheres, Liu Yijiu, who is physically strong, did not have much impact, but it did not affect other ordinary people. For welders, it makes their actions less coordinated and natural than outside.

The welding drawings and tooling are all on the workbench. The large impeller of an engine will weigh tens of kilograms after being welded. Fortunately, the workbench has the same height as the transport logistics cart and can be gently pushed from the workbench. Go to the car.

After entering inside, the four workers listened to the instructions from the outside, and Huang Qiaosong asked them to work in accordance with Liu Yijiu's instructions. Long Yaohua was present, and they did not show any non-stop instructions.Otherwise, it will bring a lot of trouble to Zhao Liangbi and others, and make their lives more difficult.

Liu Yijiu looked at the drawings and began to direct the workers to weld. There was no voice communication. He could only show the drawings and welding procedures to the four workers.A group of two, each began to weld an impeller, but Liu Yijiu was not a special welder, just staring on both sides.

Even if there are special tools to fix the position of the blades on the impeller, two people are required to weld on both sides at the same time to reduce the amount of deformation and ensure the quality of welding. These impellers are originally curved, and the middle is thick and the sides are thin, and the top is thin. Thick, not easy when welding.

While working, these welders seemed to forget that Liu Yijiu almost rioted them yesterday, and under the command of Liu Yijiu, they began to work.

When the first bright light shines in the pressure chamber filled with inert gas, the bright light in the pressure chamber starts to flicker.

When the first blade was welded, the workers didn't feel anything. Although they were more tired than usual, they didn't have any problems.

But when the second blade was welded, there was a problem. Before welding, just positioning the blade on the tooling made a welder feel chest tightness, shortness of breath, and difficulty breathing. Liu Yijiu immediately let him go out and change. People from outside come in.

Wait until people outside come in before starting the welding of the second blade.

It is not a simple matter to weld the engine blades that look small. Even if these blades need to be finished once, in order to ensure the position accuracy of all the blades, they must be welded symmetrically, otherwise the angle of the blade distribution will be problematic. , So that the entire impeller is affected when it rotates at high speed, which affects the air pressure of the entire engine at this stage, causing air pressure turbulence inside the engine.

It should have been sintered and then processed as a whole, but in the end, a welding process must be adopted.

Such a process, in the current technological level of China, the engine technology can only achieve a service life of 500 hours, which is half the service life of the old Maozi's al-31.

Liu Yijiu didn't care.Al-31, an engine exported to China is about US$2 million. Even if the service life reaches 1,000 hours, the cost of maintenance is not included. The cost of using the engine alone is US$5,000 per hour...

The turbofan eight manufactured in China, even if it is not mass-produced at present, costs only about 6 million yuan. This is all the cost, calculated based on the production of 400 units.Calculated by 500 hours, the usage cost only reaches about 6000 US dollars.

The engine is much more expensive than Lao Maozi, and the flight cost is much higher, but the Republic can produce it by itself!

This is something that money cannot buy.

If an integral impeller or even an integral hollow impeller can be developed, the service life will be longer and the cost will be effectively reduced.

Time continued. Welding workers kept coming in and out. One impeller was completely welded. It took just four hours to complete the welding process. Liu Yijiu discovered that two of the four people who came in at the beginning did not show up. The situation, the first person to change in, also had no problems. As for the others, few people persisted for four hours.

This made him a little headache.

A heavy J-10 fighter requires two engines. If there is an export order for two hundred aircraft, this will reach their expected output.

After solving the technical problems, what seems to follow is the urgent requirement for productivity increase?