Chapter 175 Remelting Layer
What he just thought about was actually very simple.
It is to take advantage of the fact that aircraft manufacturers are focusing their main efforts elsewhere and find a way to get them to agree to produce some important parts of "non-important models" in China.
The main frame, landing gear, wings and even fan blades.
On the one hand, it can provide many high-end manufacturing jobs for the country. On the other hand, it can also allow more aircraft manufacturers to gain experience in manufacturing passenger aircraft parts in advance and train some skilled workers.
To be honest, Shanghai is not a suitable place for manufacturing.
It’s too much land and money.
Although Hufei cannot move anywhere at will in general, when the production of domestic passenger aircraft increases, parts production will definitely be allocated to other factories under the aviation industry.
The ARJ21 and C919 on the original timeline adopted this form, with dispersed production in various places, and finally completed assembly and testing in Shanghai.
In this life, the localization rate of domestically produced large aircraft will definitely be higher than in the previous life, and the number of companies and factories involved in the entire industry chain will also be greater.
Just one Figure 214, which has a high probability of not having a very high output, will definitely not be able to feed so many factories.
So the sooner you prepare for this, the better.
If it can be successful, then units such as Factory 112, Factory 132, Factory 410, Factory 172, and even the cities where they are located will benefit from it.
However, Chang Haonan is not the kind of person who likes to open champagne at halftime, so on the surface he still chatted with the other party calmly.
“You know a lot about this.”
The aviation manufacturing industry and the air transportation industry can be considered to be two fields that have almost nothing to do with each other. Although Zhong Shihong is the director of the technical department of Factory 410, the things he mentioned earlier about civil aviation obviously did not come from his usual work. .
"Of course, I have loved airplanes since I was a child."
When Zhong Shihong said this, his face was filled with memories of his childhood:
"I was in elementary school When I was young, I watched a movie about air combat with adults. "
"Because of my poor health, I knew that I would never be a pilot, so I always regarded this as a hobby. Later, when I got the opportunity, I became a pilot. I applied to be transferred from Factory 103, which engages in machinery and equipment, to Factory 410.”
A story similar to that of Chang Haonan, who chose to build airplanes because he couldn't fly them.
“But when you work in Factory 410, you rarely see a complete aircraft, right?”
The former asked with a smile.
"Indeed, most of the time I am immersed in the workshop, dealing with aviation parts." Zhong Shihong stroked his hair:
"But I chose to be transferred here , and another reason is that there are more civil aviation aircraft in Shengjing. I have saved a little money over the years, bought a camera and often go to the airport to take pictures..."
...
As the two chatted, the plane quickly landed at Lianhai Airport.
However, transportation and communication in this era were not smooth. It was not until that afternoon that the group finally met Professor Zhou Zexuan, the director of the Analysis and Testing Center of Lianhai University of Technology, after looking in several wrong places.
“Thank you for your hard work on the road.”
Professor Zhou took the two turbine blades and looked at them over and over:
"We need to conduct metallographic examination on the inside of these... uh, small holes, right? What magnification is required?"
"It is best to test both inside and around the holes. First use 200x and 500x. Take a look at the overall appearance at a higher magnification, and if you find any problems, look at the specific details. "No problem, this is quick."
Due to confidentiality issues, Zhou Zexuan did not. Ask students to help, but put on gloves himself, wipe the surface to be tested with alcohol, and then immerse the sample in the reagent.
While waiting for the chemical erosion, Chang Haonan asked something that he had been curious about on the road:
"Speaking of which, Professor Zhou, since foreign manufacturers prohibit you from moving the position of the instrument, they probably want to restrict the specific use of the equipment. Isn't there any risk if you directly test it for us like this?"
Hearing this question, Zhou Zexuan sneered directly:
"Restrict the specific use of personal P. After the equipment is purchased, unless they send someone to watch here at all times, how can it be possible? Know exactly what we are doing with it.”
“The reason why we wrote this clause is to make us feel disgusted. Secondly, and most importantly, we are worried that users will go to third-party manufacturers. Buying wearing parts and doing repairs have damaged their profits.”
“Some parts have no technical content at all and cost a few yuan at most. The gringo lion’s big opening costs thousands of dollars. If you dare not use them, they will refuse to provide you with after-sales service.”
"If you can buy domestically produced equipment that is suitable for use, who the hell would be willing to suffer this kind of anger..."
Chang Haonan understood immediately.
"I see..."
It is similar to the sanctions imposed on certain institutions and schools in China in previous lives.
For example, prohibiting you from using certain software.
Everyone knows that this will not have any real impact - the original ones are all pirated.
But just doing this gesture makes you feel sick.
To be honest, it is the high-priced accessories and services that cause greater losses.
Before he was reborn, he had also heard that many faults of imported equipment were not difficult to repair, but the contract required original engineers to handle it. The price was extremely high, and the efficiency was extremely low. Often because A small matter may cause work to stop for half a month or even longer.
Everyone chatted about other topics, and soon the chemical erosion process was over.
As the director of the analysis and testing center, Zhou Zexuan's work efficiency is unparalleled, and the optical inspection results were obtained in a short time.
A few black and white photos printed on paper.
Zhong Shihong was the first to come over, followed by others in the same group, and they quickly surrounded Zhou Zexuan.
"Well..."
The latter pondered for a moment and finally gave his own judgment:
"The material around the hole has a uniform shape, and no cracks are found. Only a very weak uneven surface can be seen under 500 times magnification, which should be left by post-processing processes such as polishing."
Next to Zhong Shihong was obviously in a good mood after hearing this comment.
But before he could be happy for a few seconds, the next sentence made his heart suddenly lift:
"As for the inner wall of the small hole... the light is not very bright, but 200 When magnified, you can already see some white strips or lumps.”
“The appearance of the inner wall of the small hole that has not been chemically etched is similar. It has strong corrosion resistance...”
Zhou Zexuan put down the two pieces of paper in his hand when he said this:
"I speculate that there should be a remelted layer structure that has not been cleaned, but the specific situation, especially the thickness of the remelted layer, cannot be seen. If you are willing For an additional testing fee, you can use a 2500x electron microscope for further testing! ”
(End of this chapter)