In this era, artificial aging is to carry out heat treatment to eliminate the internal stress of mechanical parts during casting or machining.

Vibration aging is to make the parts vibrate for a long time and at a high frequency, so that the stress seen by the molecules concentrated together due to processing inside the parts is dispersed and disappears.

Of course, it is simply impossible to disappear completely.

Vibration aging is mainly used in the military industry, because the military industry has special requirements for some materials. For example, the various aviation aluminum components used to compose aircraft in aviation systems; the aluminum alloy shell of the aerospace system missile and some aluminum alloy structural parts; Some of the key parts in the weapon system of the warship that use aluminum alloy or titanium alloy......

In China, the aging of vibrations is basically introduced from abroad after entering the 21st century, and it is rarely used in civilian industries, and it is almost difficult to see outside.

The more precise the part, the higher the requirement for the amount of stress remaining in the various components. The less stress inside the part, the less likely it is to deform the part because the deformation of the part has already occurred during the process of stress release of the part.

Often, after manual aging, high-precision finishing continues.

This kind of finishing process requires that the tool speed is high enough, the tool is sharp enough, and the amount of tool pass is extremely reasonable, otherwise, the stress generated in the machining process will be too large, so that the product can not be greatly designed with precision.

The more complex the equipment, the longer the production cycle, in order to remove the intermolecular stresses within the material and keep them as small as possible. The processing of such parts is often repeatedly aged, the most typical of which is the laser emitter used on Chinese warships (there should be many such products abroad, but the gourd has not been seen, after all, foreign military products, in addition to some ordinary parts of Lao Maozi's warships will be put into China for processing, and some other high-end precision equipment. It is basically impossible to outsource to China for processing. The gourd once had the honor to process a batch of old Maozi's warships, which seem to be the parts on the destroyer, and the main processing is some gears with higher precision than the ordinary domestic military industry and parts such as shafts and matching shafts).

The laser emitter is a new high-end weapon that all countries are vigorously developing in the 21 st century.

China has not disclosed it, and there has been no relevant report on it, but this aspect has been studied since the 90s, and breakthroughs have been made, basically after the first decade of the 21st century has passed.

The main materials used in large laser emitters are titanium alloys and special aluminum. In particular, the precision parts processed by titanium alloy materials used to install countless circuit boards and condenser boards have a production cycle of more than two years!

Just the natural aging after the initial processing is more than half a year.

Even after such a long natural aging, it has to be manually aged many times before it can be semi-finished.

Only in this way will all kinds of precision parts be completely deformed, and then the structure of these parts will be kept stable through some complex processing methods.

Ordinary people know that in the process of transmitting light, as long as it is slightly blocked. Refraction will occur. The highest requirements for various parts are the parts on the optical instrument. Many research institutes in China have not established their own mechanical experimental workshops because of cost problems, and after designing the products, they will find some small processing factories with strong technical strength to carry out trial processing of products, and assemble and verify them after the processing is completed.

Wait until the sample assembly is complete. According to the results of the experiment, the verification is carried out, the design is improved, or the finalized products are handed over to the state, so that those military factories with strong technical strength can produce or mothball them as technical reserves.

Fortunately. The precision of the key parts on these CNC machine tools produced by Jiuyi Heavy Industry has not yet reached that level.

Jiuyi Heavy Industry's technical techniques have not reached the level where it is necessary to lock many technical techniques that are not needed for the time being into the technical storage room for use as technical reserves.

"Mr. Yun, Brother Yun. Do you dare to be busy? "Yun Fei just came back from Haer Heavy Industry, and before he could return to the company, he was intercepted by the exit of the Beijing Sanzi at the railway station.

"Damn, what's going on in such a hurry? Why don't you let me go home and take a shower and get some good sleep? "The speed of the train this year, don't mention it!

Although it is a soft sleeper workshop, it took several days from the place near the northeast to Rongcheng, which is located in the center of the southwest, and it was sore all over the body!

Yun Fei now admires those people in this era who flocked to the southeast coast from all over China in order to make their pockets a little bigger, and those who did not sell tickets even stood from the starting point to the destination!

That's a few days and nights!

Salute to the first generation of migrant workers in China! Although, many of them will become local tyrants in the 21st century and arch a lot of cabbage, at least, the hardships they are suffering now deserve everyone's respect.

Only those who are ruthless to themselves can develop and achieve.

Even, Yun Fei hates this era when there are only green cars!

If it weren't for the fact that he let Jiuyi Airlines make a special trip to Northeast Taisao Bao, Yun Fei would definitely not be willing to suffer this hardship and suffer this crime!

"What about my ancestors, our mobile phone factory equipment has arrived, but where are the workers you promised? Brother, let's not play like this, do you know that Lu Dao, I am so poor that I don't have any underwear to sell now...... "Fat Li has been extremely miserable during this time, and he is so unhappy when he has no money."

"In Rongcheng, this collapse, the standard sells your half-baked Trump ......" When it came to the matter of the mobile phone factory, Yun Fei himself was a little embarrassed.

Now the affairs of the entire factory are handled by Li Lu and the three cheapers in Beijing, but he himself is busy with the affairs of Jiuyi Heavy Industry because of Taiwan's CNC machine tool factory's large-scale entry into the Chinese market, and he has not even asked about the mobile phone factory.

Originally, the 500 highly educated assembly line workers promised by the North Korean side did not arrive in China at the end of June because they needed his boss to personally negotiate with the Chengdu city government to help the North Korean personnel apply for employment visas, but now they are all in early July......

When he first returned to Rongcheng from Jinling, Li Lu also urged him, but he was eager to expand the production capacity of Jiuyi Heavy Industry and find a suitable production capacity supporting factory and couldn't take care of it.

I don't know where this product came from, and I know that I arrived in Rongcheng today!

Without money, there is no capital to eat, drink and have fun, this product honestly stayed in Rongcheng to help his cousin do things, what Yun Fei didn't expect was that this product actually learned a bad Trump in a short time.

It hurts!

"Xiaoyun, the technical personnel from Germany will fly from Huadu to Rongcheng tomorrow, our workers are not in place, the overwhelming propaganda you are talking about, there is not even a trace of shadow, we can't compare to you, all the net worth of the brothers are here......" Ye Fei was very dissatisfied with Yun Fei's attitude of ignoring the affairs of the entire factory after a few people took over.

Although the money of the mobile phone factory was paid by Yun Fei alone, you must know that they exchanged more than 40% of the shares for the entire United Airlines!

Although United Airlines, which has been renamed Jiuyi Airlines, is now losing more and more money, if Yunfei Airlines loses serious money and sells these planes, it will have to sell hundreds of millions of dollars at the cheapest!

"Brother, when did I stop paying attention? Don't worry, I've got you covered! "For Ye Fei, Yun Fei can't be like Li Zhuang.

No matter how he offended Li Zhuang, with Li Lu, the absolutely perfect royal sister, to support him, and to be able to suppress Li Zhuang's cousin, Yun Fei was not worried about what this bear child could do to him.

But Ye Fei can't.

Especially Ye Fei, who now has no purpose for Li Lu.

Ye Pageant can suppress this guy, but Yun Fei is not ready to use the double-edged sword of Ye Pageant.

He now wants to keep his distance from Ye Pormei, even if Xiao Cabbage really brings his son to find him, he is not ready. The background of that old guy is too strong, there are too many eyes, and more importantly, this old guy is too undisciplined.

In China in the mid-90s, discipline was a valuable thing.

"Are you interested? The company here has not improved in the slightest, but you went to southern Anhui to acquire a home appliance company? Brother, can you not take your brothers for fools? Ye Fei was very dissatisfied with a guy like Yun Fei who didn't take investors seriously and only cared about making money for himself.

Very dissatisfied.

"How can it be, aren't you busy these days! The acquisition ......of Wan Yan was just an accident, an accident," Yun Fei explained curtly.

At first, he really didn't think about acquiring Wan Yan's shares.

Forced by Taiwan's CNC machine tool factory, facing the pressure of lack of money, he had to change from his simple purpose of saving Wanyan to using Wanyan's opportunity to circle money to support Jiuyi Heavy Industry.

The profits of mobile phone companies are also very considerable, but they are far from being easy to make money without strong competitors like Wan Yan!

"Brother, it's not us who threaten you, if our mobile phone company doesn't have the kind of income you promised, you can weigh the consequences yourself, don't blame your brother for not taking your brother-in-law seriously! Anyway, you can do it yourself, anyway, what you tell our brothers to do, the brothers do it strictly according to the requirements, and the rest is up to you......" After Ye Fei finished speaking, without waiting for Yun Fei to answer, he took the fat man Li and the bamboo pole Luo and left the stunned Li Lu and Yun Fei who was covered in cold sweat. (To be continued......)

PS: Thank you Golf GTI for the big evaluation vote.