Laser sintering technology has appeared, which means that the other party is now able to use 3D printing technology to do some small basic metal parts processing.

For example, the housing of the automobile gearbox, or the hydraulic oil valve in the automobile transmission, these are not too large parts, but they are the key components of a car's automatic transmission.

For example, the shell of this gearbox is now used on a large scale by casting technology, and some processing and grinding techniques will be used in the later stage.

However, the shape of such a shell, especially on the outer surface, will have a lot of small metal grooves that twist and turn, and these grooves are often related to the performance design of the gearbox, which is a part that cannot be omitted.

The automatic transmission that plagued the domestic automobile industry in later generations, and the shell of this gearbox alone gave many companies a headache.

The thickness is required to be kept within a certain range, and the error must be small, if you are thick, there will be changes in weight and volume, which will affect the fuel consumption of the car, and the layout design of the gearbox.

If it is light and thin, you can not guarantee the quality and service life of the gearbox, so just such a small gearbox housing makes many domestic automobile manufacturers very troubled.

The processing technology and process are very exquisite, but a few years later, Ford in the United States has begun to use 3D printing technology to produce the shell of this gearbox.

There is also the hydraulic oil valve in the gearbox, which is also the key to the automatic transmission, as we all know, the current automatic transmission is basically hydraulically controlled fork to shift gears.

The design of such a hydraulic oil valve will be very exquisite, and the pipelines inside will be very complicated. It can be said that it is curved and vertical. The requirements for the precision and craftsmanship of the machining are very high.

And the country is very backward in this hydraulic field. When it comes to the process of finishing and combining together, it is more complex and difficult, so until ten years later, there are not many manufacturers in China who have mastered the technology that can produce hydraulic oil valves, according to Li Yifan's understanding of the domestic automotive industry, it seems that at that time there were few manufacturers in China that could produce completely independent hydraulic oil valves, and there were only two BYD and Geely.

This shows the difficulty of producing the core parts of such a car, and if 3D printing technology is used. Then many of the finishing problems that plague the domestic automotive industry are no longer a problem.

The key to using 3D printing technology to produce such small auto parts is that you need to master the laser sintering technology of powder metal.

That is, several metal powders are mixed together in proportion, and then these metal powders are quickly melted at high temperature by laser, and then sprayed out with nozzles according to the model that the computer has already built in the 3D printer, and then quickly dried and cooled to form an integrated product, which is the essence of laser sintering technology.

And until now. It seems that the United States is the only one that has mastered the core and key technologies of this laser sintering technology. And because of the high cost, this technology has not yet been recognized by many large manufacturers.

But ten years later, when 3D printers have begun to quietly enter all walks of life in the manufacturing industry, Ford of the United States began to apply these technologies to produce auto parts, and countless latecomers began to beat their chests......

And for the automobile manufacturing industry, this 3D printing technology can also be used not only to produce car models, metal parts.

You must know that there are a lot of plastic parts in a car, such as the interior door panel, console, central control and many other parts of the car, which need to use a large number of plastic parts.

According to the original model, it was necessary for the designer to spend several months to open the mold by hand, but after the 3D printing technology matured, that set of manual work can be completely omitted.

For example, more than ten years later, Volkswagen, the center console and other large plastic parts on their cars are almost all produced using 3D printing technology.

This saves them a lot of process steps, as well as material and time costs.

Yao Chongshan was playing with a metal ornament handicraft of a lady flying in his hand, the expression on his face was cloudy and uncertain, this handicraft, he had been playing with it for a long time.

The height is about 20 centimeters, not counting the base, and the statue of this lady flying in the sky is made of metal integrals, at least there are no traces of post-machining on the surface.

And just looking at the surface, it is difficult to tell how this ornament is made, you must know that such a lady flying ornament is not as square as other metal crafts.

Her shape is very peculiar, fluid linear, and it is also made of metal, it must be very difficult to make, if you use the machining method, it will take a long time, and the process will be very cumbersome, the cost will be very high.

And if the product is made by the casting method, but did he find any cavity under the lady flying into the sky, you must know that the key to metal casting molding is that there will generally be a cavity under the finished product, and after the casting is molded, let the wax model or sand mold out of the place, but on this metal craft, he did not see it at all.

After playing for a long time, he finally believed that this metal lady Feitian should be produced by Professor Hu Bin and his team from Huazhong University of Science and Technology using laser sintering technology combined with 3D printing technology.

In this way, his interest in Professor Hu Bin was even stronger, and when Li Yifan proposed to find two helpers for himself, he was still a little repulsed by his arrogance.

After all, in his opinion, in terms of the current domestic environment, according to his understanding, let alone understanding this 3D printing technology, I am afraid that there are not many people who have heard of this technology.

But what he didn't expect was that he really fulfilled the old saying, there are people outside the world, and there are heavens outside the sky.

When he still thought that he should be regarded as the pioneer of domestic 3D printing technology, there were already people in Huazhong University of Science and Technology, and they had already overcome the powder metal laser sintering technology, which is known as one of the most difficult aspects of 3D printing technology.

"Xiao Li, brother, when are you going to find this Professor Hu?"

"It should be two days, right? I've been busy lately and I'm short on time. ”

Li Yifan didn't know why Yao Chongshan asked like this, but after this guy finished asking, the attitude on his face was a little twisted.

"What's wrong? Brother Yao, what else do you have that you can't think of? ”

Yao Chongshan's face was a little red, and he twisted for a long time, and finally squeezed out a few words and said.

"That...... That one...... Xiao Li, can I go to Central China with you? Such a powerful thought has already appeared in our country, but I don't know at all, and I'm a little ashamed to think about it. This Mr. Hu should definitely be the pioneer of this industry, I still have a lot of questions about this industry, but I can't find any suitable person to answer for me, so I want to go with you, ask him, and ask him to solve my doubts. ”

Although Yao Chongshan is a little cautious, his essence is not bad, and once someone convinces him, then he immediately extinguishes other thoughts, but admires others wholeheartedly, as for any jealousy and other emotions, he has very few emotions, which may also be the biggest advantage of technical nerds.

"Hey! What shall I do? Don't worry, I'll book a ticket in a few days, and we'll go together. ”

I believe it will be more convincing to be able to bring someone like Yao Chongshan to find Hu Bin together, of course Li Yifan is happy to have one more half-baked expert like Yao Chongshan by his side, so as not to meet Professor Hu Bin in the end, he will be regarded as a liar.

"Hey, that's good, that's good......"

After all, Yao Chongshan has just come out of school, and he is still a simple game, and he was very happy when he heard that he could do a plane over, after all, he has traveled south and north over the years, and he has taken trains, and it is still a teacher who sits in a sleeper, and he sits in a hard seat.

He hadn't done such a high-end thing as an airplane.

"Hehe, don't worry, I'll definitely call you then. By the way, Brother Yao, let's not talk about those, didn't you say before that this 3D printing technology is promising if it is applied to the modeling of large castings and forgings? And you also said that such large-scale castings and forgings are not only used in power plants, right? ”

Li Yifan is still very concerned about the market of this large forging and casting, after all, it is related to the future development prospects of his special metal company, so he also wants to know more from Yao Chongshan's mouth.

And Yao Chongshan didn't have any idea or need to hide such information at all, as soon as Li Yifan asked, he said it all.

"No, in terms of the zoning of modern industry. In the small processing industry, the current prospect of 3D printing technology is not large, but in the field of heavy industry, this technology is definitely promising, especially those heavy industrial enterprises that need to use a large number of metal casting and forging accessories. I won't talk about power companies, we have also talked about it before, then I will tell you about two industries that need to use a large number of large metal casting and forging accessories, one is the petrochemical equipment industry, and the other is the shipbuilding industry......"

As soon as Yao Chongshan said these two industries, Li Yifan immediately cheered up the spirit of 120,000 points, after all, these two industries are the new direction of business development of Bincheng Special Metal Smelting Company in the future. (To be continued......)