The pressurized chamber has such a great military purpose. After repeated determination, Long Yaohua did not stop Liu Yijiu from conducting such an experiment the next day.

The only inconvenience is that people who enter it need to wear a breathing mask, otherwise they will suffocate due to hypoxia, and the pressure chamber is full of argon gas with high concentrations, otherwise they will not need to wear a breathing mask or something.

"It's really nothing." Early the next morning, Long Yaohua stared at his blood-covered eyes and asked Liu Yijiu again.

"Chief, don't worry, if there is any problem, you can completely relieve pressure from the pressurized chamber outside. After all, there are only two atmospheric pressures, so there will be no major problems." Liu Yijiu knew that Long Yaohua was out of concern for him and said nothing.

That explanation has been explained.

Only by proving that there is no problem in it can the country strengthen research on pressurized chambers and start research on soldier training.

When Liu Yijiu arrived at the welding experiment workshop where the pressurized chamber was located, everyone from Factory 32 came here, and a group of people were discussing. When they saw Liu Yijiu coming, many people looked sarcastic on their faces.

These leaders are used to being pampered, especially yesterday that Zhao Liangbi didn't say anything about their behavior, so naturally everyone would not have any reservations.

The mocking smile, contemptuous eyes, and the mentality of watching the show were fully revealed by them.

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

They were eliminated, but they would not be willing to do so. They had to see how long Liu Yijiu could stay in it without wearing protective clothing.

This is how technical workers are. Only by conquering them technically and in what they are allowed to do will they completely obey.

Otherwise, it is really not easy to manage.

"You are all welders with good skills. Today we change our methods and weld them inside." Liu Yijiu did not care about everyone's comments, nor did he care about everyone's various complex expressions. Instead, he directly announced the selection criteria for these male welders.

It's really unexpected that you just do your homework without any training.

"Director Liu, is it to weld some scrapped parts?" Huang Qiaosong did not expect that Liu Yijiu didn't say that at the beginning.

Liu Yijiu glanced at Huang Qiaosong, then looked at the others, and said calmly, "We don't have time to waste the components of the engine. I personally supervise this matter. If they don't work, I will replace people. The welders in the Ninth Hospital are also competent for such a job."

"Who said I'll follow you?" Huang Ying, whose face was still pale, was very disdainful of Liu Yijiu.

Although she was on the verge of coma yesterday afternoon, she was exhausted after getting out of the water. After resting for a night, she still felt weak all over. However, she was unwilling to be eliminated like this.

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

"Who will come?" Liu Yijiu turned his head and asked the numerous workers.

"I"

"I"

"I"

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

Sometimes, the performance of a leader plays a very important role for the people in the entire unit.

"The best technology comes out." Liu Yijiu did not say anything more, but let them come out by themselves. "This time we directly use welding to select them directly. You know the difficulty of manufacturing these things and the value. I hope that those who are not sure will not come in. Scrap is not a problem, but it will affect the process of our fighter test flight."

"I am the most suitable one." Huang Ying took the initiative.

"I'm not having time to joke around now." Liu Yijiu didn't say anything about women walking away, otherwise these tigresses would be blown up.

It has already caused excitement among the crowd. In the end, if they add fuel to the fire, even if they can't do anything, it will be unprofitable.

After more than a dozen welding workers' discussions, four welders were selected. They were all over thirty years old, not over 40 years old, and they were the younger experienced welders in the middle of the selection.

Liu Yijiu said nothing, and asked someone to push the parts to be welded into the middle of the work area with a small cart, placed them on two workbenches, and then directly pressed towards the work area. When the work area is pressurized, he has already brought a special breathing mask, which is also connected to the outside with a pipe.

There is no difference between a breathing mask and a protective clothing hood. Welded protective glasses are used in the eye mask, which is much more flexible than wearing bulky protective clothing.

The blades of high-temperature alloys, impellers of high-temperature alloys, and parts of titanium alloys are placed in categories with specially made logistics trolleys next to the workbench of the pressure chamber. The blades carefully processed in the machining center are shining under the light.

However, Liu Yijiu, who has a breathing mask, is very conspicuous inside. Since the protective clothing is used to connect the pipes for breathing to the outside, you must be careful when working inside, and you cannot move them randomly, and you must not let the high temperatures generated during welding burn the pipes, otherwise there will be problems.

The first batch of four welding workers selected entered the inside with Liu Yijiu. In the two atmospheric pressure environments, it did not have much impact on Liu Yijiu, who had strong physical fitness, but for other ordinary welders, their actions became less coordinated and natural than outside.

The welding drawings and workpieces are all on the workbench. After welding, a large impeller of an engine will weigh dozens of kilograms. Fortunately, the workbench is the same as the logistics truck for transportation, and can be gently pushed from the workbench to the cart.

After entering, the four workers listened to the outside command, Huang Qiaosong asked them to work according to Liu Yijiu's instructions. Long Yaohua was present, and they did not show any constant instructions. Otherwise, it would bring a lot of trouble to Zhao Liangbi and others, and make their lives not very easy.

Liu Yijiu looked at the drawings and began to direct the workers to welding. Without any voice communication, he could only point to the drawings and welding process regulations to show the four workers. Two people in groups, each starting to weld an impeller, while Liu Yijiu was not a special welder, just staring at both sides.

Even if there are special tools to fix the position of the blades on the impeller, two people need to weld on both sides at the same time to reduce the deformation and ensure the quality of the welding. These impellers are curved, and have thick middle and thin sides, and their lifespan is half low.

Liu Yijiu didn't care. Al3, an engine exported to China, is about two million US dollars. Even if the service life reaches 000 hours, it does not include the maintenance cost. Just the engine's usage cost, it will cost US$5,000 per hour.

Even if the domestically manufactured Turbofan Eight is not currently manufactured in batches, it only costs about 6 million yuan. This is all costs, calculated based on the production of 400 units. In five hundred hours, the cost of use is only about 6,000 US dollars.

The engines were much more expensive than the Russians and the flight cost was much higher, but the Republic could produce them on its own

This is something that even money cannot buy.

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

Time continued, and the welding workers kept coming in and out, and the impeller was completely welded, and it took just four hours to come here. Liu Yijiu found that two of the four people who came in at the beginning had no problems. The first person to switch in also had no problems. As for the others, there were very few people who persisted for four hours.

This gave him a headache.

A heavy J-10 fighter jet requires two engines. If there are two hundred export orders, this will achieve their expected output.

After solving the technical problems, it seems that the urgent requirement for capacity improvement follows

To be continued.
Chapter completed!