If it weren't for the Ph.D. in foundry, Yao Chongshan might not have paid much attention to this technology, and even thought that he was a chicken rib like other people in this technology.

It is impossible to apply it on a large scale in a modern metalworking-based industrial environment.

However, as a Ph.D. graduate in the foundry industry, Yao Chongshan was greatly touched during this trip to the United States, especially when he watched the display staff of the Lawrence Laboratory show this technology vividly in front of him.

People just set up the program, and then in just ten minutes, a small car model was born under the 3D printer.

Although this kind of display is just of a lot of entertainment nature, when he saw this scene, especially when he saw the delicacy and precision of the model, Yao Chongshan seemed to feel a great shock.

He graduated from the foundry major, and he also understands the domestic foundry industry.

Casting, forging and cutting are the three main means of forming metal parts in the metal processing industry, among which casting is also the most widely used means, because the cost of this means is the lowest.

First make a model, and then pour it with molten iron, after which it is heat dissipation molding, and then a blank is completed, rough, as long as there is no big problem with such a blank, you can directly put it on the machine.

The finer ones are the ones that will polish these castings before using them.

But even so, the metal parts that are processed in this way. It is definitely better than those forgings that can only be formed by continuous forging. Or those that have to be taken to the machining center to get on the train. Cutting, milling, planing, and drilling to form metal parts is much less costly.

The reason for this could not be simpler, because there are few processes and low complexity in the processing process.

So the casting process process. It can be said that it is currently the most widely used and the most widely used process in the domestic metal processing industry.

However, even if this processing method is widely used in our country, it is still difficult for us to grasp the essence of this technology, and the countries that have mastered the top casting technology in the world are still the United States, Japan, and Germany.

Among them, especially Germany and Japan, they are very slippery.

Why is this happening?

The reason for this couldn't be simpler. It is two aspects, on the one hand, the accuracy of the molds we apply in the foundry industry. There is also the quality of our molten iron alloy.

The accuracy of the mold has always been a difficult problem that plagues our domestic foundry industry, after all, we have been relatively backward in finishing in China.

We can't rely on machines, if we rely on manual manufacturing molds, it is too time-consuming, troublesome, and the cost will be greatly increased, so there is no way, many domestic foundry enterprises, some parts when the mold is opened, have to ask the Japanese for help.

And where do the Japanese have such kindness, often leave some secret doors when you open the mold, causing problems with the service life of parts in the later stage, and the price is still expensive, dead expensive, and we all know this, but there is nothing that people can do.

In addition, in terms of the material of this metal alloy, we are indeed very unqualified, and this is not a problem, just say that the billet we produced back then, used to produce the cylinder of the car, the result of the cylinder, either there is a trachoma leakage, or the metal will age within two or three years, produce cracks, and finally even fell to the point that it had to be imported to Turkey.

Every time I think of these, Yao Chongshan, who was born in the foundry industry, will feel a burst of worry for the domestic metal casting industry.

Although he also wants to change the status quo of China's backwardness in science and technology, the more he understands the current situation of China's backwardness, the more worried and hopeless he will feel.

The backwardness of the abrasives is because the finishing is not in place, which can be made up by other methods, but the lack of material science can be made up for by what means?

There is no way to make up for it, you can only import materials from abroad to do it.

It is simply impossible to count on domestic laboratories to allocate funds from the state, and then rely on the research methods of scientific researchers to get things out.

Why? As a scientific researcher, he can be said to be unable to understand the situation of various national laboratories in China.

Who is the most senior leader in each national research institute? It's not the director who understands technology and talents, but the secretary who engages in politics!

Secretaries are political officials, and they are not interested in what your institute is doing and what they are most interested in contributing to the future of the country, but in the achievements that will enable them to be promoted and make a fortune during their tenure.

If during their tenure, relying on domestic scientific researchers and technology can not be used to publicize any technology, then we can spend money on technology introduction, and then let you scientific researchers absorb technology?

In this way, it can still be regarded as their political achievements, as for whether these technologies are international top level, whether they will help the country's future industrial development, it is not their concern.

All they need is those political achievements, stepping stones for their promotion and wealth.

So this made Yao Chongshan very disappointed in the domestic scientific research institutions, and now it was time for him to make a choice, whether to enter the factory, or go abroad for further study, or stay in the school to engage in scientific research.

According to his own thoughts, he wanted to stay in the school to engage in scientific research, but the top leader of the school was also a political official and a secretary.

So can he understand the importance of the 3D printing technology he wants to engage in for the future development of the domestic foundry industry?

Can he know that if we use this technology to make molds, it will save nearly ten times the money compared to going to Japan to find someone to open the molds?

Will he understand that the precision of molds made with such technology will be comparable to or even higher than that produced by the Japanese?

He will understand that if we conquer powder metal laser sintering technology in the future, will the date come when we will apply this technology to the real field of metal processing and usher in the third industrial revolution?

It is estimated that it is impossible, you must know that what you have proposed, in the eyes of many people, is simply a fantasy, and even if it is not a fantasy, if you want to achieve the above points, it is estimated that hundreds of millions of funds will be invested in it.

It is estimated that no school leader is willing to do such a deal, but if it is a school leader who respects science and understands the development of science, it is better to say that he can more or less allocate some money to himself.

But if it's the kind of leader who is single-mindedly hollowed out and only thinks about how to get promoted and make a fortune, then don't think about it yourself.

As soon as he thought of this, Yao Chongshan was a little depressed, and the more he thought about it, the more upset he became, and he didn't even want to go to the school cafeteria to eat at night, but wanted to go to a small restaurant outside the school to drink some wine.

But as soon as he walked out of the door of the dormitory building, he happened to meet a young man, who had obviously just finished inquiring about the news with the old janitor at the door of the dormitory, and happened to come out by himself.

Yao Chongshan didn't care much, but he was stopped by the old man of the doorman.

"Xiao Yao, Xiao Yao......"

"Eh, Uncle Sun, what's the matter?"

"Hehe, it just so happened that this young man said that he was looking for something to do with you, so let's talk about it."

Yao Chongshan walked over, looking at the handsome and tall young man in the suit in front of him, his expression was a little dazed for a while, even he, a technical nerd who usually doesn't pay much attention to appearance, saw such a young man, he couldn't help but cheer in his heart, what a handsome and beautiful young man.

It's just that he doesn't seem to know him, so what is the matter with him coming to him?

"Yao Chongshan, Dr. Yao, right?"

The handsome young man on the opposite side has a very warm attitude, smiling slightly, which makes people warm all over their bodies, and makes it easy for people to have a feeling of extraordinary bearing.

"Hehe, I'm Yao Chongshan, but I'm not Dr. Yao yet, may I ask who you are?"

"Oh? Please forgive me for being a little presumptuous, my name is Li Yifan, I am the general manager of our Bincheng Special Metal Smelting Company, I came to see you today, Dr. Yao, do you have something to discuss with you? ”

Ben Cheng Special Metals Smelting Company? Hasn't this company been yellow for a long time? What is the origin of this Li Yifan? You can't be a liar, right?

Yao Chongshan's eyes were full of suspicion, how could Li Yifan not see it, so he immediately smiled and said to Yao Chongshan.

"Regarding my identity, Mr. Yao, you can rest assured, I am definitely not a liar, No, it is my business card."

Yao Chongshan took the business card handed over by Li Yifan from Li Yifan's hand, with gold characters on a black background, it looks very eye-catching, and the card is not made of what texture it is, it feels very textured, and at first glance, it will make people feel an inexplicable sense of trust in people who use this kind of card as a business card.

People who can afford such a card should not always be a liar, right?

"It may be a little presumptuous to come to Mr. Yao this time, but I ask Mr. Yao to believe that I have no malicious intent. In addition, our Bincheng Special Metal Smelting Company, although its reputation has not been good before, we are also regrouping recently and intend to return to the market. And we don't plan to go the low-end route, so we need talent extraordinarily. And we are returning to the market this time, and we also plan to find another way, while respecting and carrying forward the traditional metal smelting and processing process, we also want to seek certain breakthroughs in other fields, such as in the field of 3D printing technology......"

"What? Do you also know 3D printing technology? ”

As soon as he heard that Li Yifan seemed to have inadvertently mentioned 3D printing technology, Yao Chongshan was a little excited...... (To be continued......)