Huayu for engineering students

Chapter 78 Oxygen-free copper? (seeking follow-up, recommendation)
Mizuki University, Metallurgical Laboratory, Department of Materials.

Since Wang Fei flew to Xiangjiang a few days ago, Wang Xu has been busy here for two days. The operation steps given by the system are very detailed. Wang Xu didn't make any changes because he didn't understand.

But he still opened some hooks. The method given by the system actually requires some new equipment, and some can be processed. Wang Xu found a school factory and placed an order. It will be done for a few hundred yuan.

But many of the control aspects are more troublesome. It's not that it can't be done, but it takes too long, and some imported equipment such as high-precision servo motors are needed. Wang Xu can't do it alone.

So Wang Xu planned to rub it with his hands, replacing those control devices with his high-perception and controllable hands, just try a few more times.

Make the finished product first, and then it is estimated that there will be interested units looking for cooperation.

Things related to automation, the experience of the previous life plus the skills of this life make Wang Xu basically equivalent to an engineer with more than ten years of work experience.

Even if it is machinery, computer, even mathematics and physics, he can boast, but the material major is not within his skill range.

Therefore, he could only follow the rules and not dare to go beyond the rules.

The senior in the Department of Materials is Cao Lei, a doctor of Professor Bian, and a freshman who enrolled last year.However, he was in Shuimu during his undergraduate and master's degree, and he was in this laboratory, so he was quite familiar with the equipment here.

At that time, many masters and Ph. D. students went straight to this, and almost all colleges and universities were like this.If you can meet a decent seedling, you will try to keep it as much as possible. The talent gap is really serious.

In the 80s, many colleges and universities could not even get enough experimental teachers to use the teaching equipment, because most of the teachers had no chance to touch these equipments at all.

It has been more than ten years since the resumption of the college entrance examination, and there have not been a few Ph. Ds graduated, and there are many parallel imports of the previous Ph. Ds.Therefore, a Ph.D. like Cao Lei who has received formal undergraduate and master education still has some reputation.

Cao Lei is from Hubei Province. He is almost 30 this year, and his children are all in elementary school. His middle school was delayed during that period and he went to the countryside to farm.

After the resumption of the college entrance examination, he re-studied. He took the exam for three years and finally got into Mizuki. He can be regarded as a generation of gods.

Brother Cao is a very nice person. He is not a talkative person, but he will chatter endlessly when he talks about equipment. All kinds of equipment are very expensive these days, and he has memorized almost all the operation manuals.

With the guidance of such a brother who is specialized in equipment, Wang Xu's progress is quite smooth.

The fine operations of the metallurgical process are mostly controlled by machinery and equipment, which is not too difficult to use, at least for Wang Xu.

The difficulty actually focuses on the use of specific new equipment, because it depends on Wang Xu's hand feel, and the hand feel still needs to be tried constantly.

Fortunately, the experiment went quite smoothly.After several experiments, Wang Xu was able to successfully use his special hand feeling to pull out an extremely thin guide wire.

After several adjustments, Wang Xu's experiment was successfully completed, and it took less than two days.

The next two days were not so much experiments as manufactures. Wang Xu wanted to manufacture some. Although they could not be made into real wires, they could still be used for internal circuits.

Oxygen-free copper can be used in almost all aspects of electronic circuits, the polar resistivity, excellent signal-to-noise ratio, especially for audio and video equipment.

The finished product has been handed over to Professor Bian, and the significantly reduced resistivity aroused his great interest.Even Wang Xu, a layman, knows what a 10% drop in resistance means, let alone Professor Bian, who has been working on metals all his life.

This improvement on the basis of oxygen-free copper has already touched the ceiling of China. Professor Bian highly doubts that this is no ordinary oxygen-free copper.

This is likely to be a kind of oxygen-free copper that has been developed abroad for decades, but has always been an industrial blank in China. Its name is single crystal copper.

Therefore, Professor Bian rushed to the laboratory almost immediately, and he had to chat with the student immediately.

Determining that single crystal copper requires special testing, Professor Bian handed it over to Cao Lei for further analysis and testing.

Single crystal copper was actually born in the 50s. Its conductivity can be close to that of silver, and its toughness is excellent. It is an excellent conductor material.

However, the processing method of this kind of thing has always troubled the industry. In the past, it was mainly used for the pins and internal wiring of chips, but processing wires and commercializing them is still a problem even in the West.

This kind of single crystal copper wire requires a new technology and equipment called hot-type continuous casting technology. This technology was invented by Xiaori in the next few years, so until recently, there is no news of this kind of wire on the market.

Simply put, this technology is a new material forming technology developed on the basis of advanced continuous casting technology and directional solidification technology.

The fundamental difference from traditional continuous casting is the use of a heated mold to prevent the formation of crystal nuclei on the mold wall, and to form directional solidification conditions through heat dissipation at the end, so that the molten metal is solidified and formed at the moment it leaves the mold outlet.

It's simple to say, but almost every detail of it requires a lot of experiments to determine the final parameters, and the parameters affect each other, and it can be said that the whole body is affected by one action.

As for how to adjust the parameters, how to adjust, what is the principle, and why is it adjusted in this way, the knowledge has deepened, and metaphysics is tested from time to time.

The birth of many materials seems inexplicable, and all kinds of oolongs emerge in endlessly. It is too common to want to make an A and get a B.

Moreover, these things are the core technologies of various companies, and they don't even apply for patents. In many cases, you don't even have a reference.

Therefore, there will be such consequences, the design of material technology is faster than burning money directly, and the kind that does not make a fuss.

Anyway, Wang Xu didn't dare. If he hadn't been caught, he wouldn't have touched the materials if he was killed.Or how to say that the material is a tiankeng, he is not only cheating college students, there are countless bosses who have been cheated by the material.

The sample has been handed over to Brother Cao by Professor Bian, and he is asked to do various tests, at least to find out whether it is real single crystal copper, as well as various parameters such as resistivity, signal-to-noise ratio, and flexibility.

As Professor Bian is watching, Wang Xu is pulling an extremely thin copper wire by hand on a self-made device.

Wang Xu's hand is very steady, but he knows that his hand is actually shaking slightly. This shaking is to adjust parameters such as pulling force, speed and angle at any time, and everything depends on the feel.

After all, it is a temporary processing equipment, whether it is processing accuracy or assembly, it can only be said to be unsatisfactory, and everything else depends on Wang Xu's hands.

If there is a drawing technician level, Wang Xu is undoubtedly the best among them, and it is absolutely no problem to be rated as an eighth-level worker.

(End of this chapter)