Monster Factory Chapter 374: : Comprehensive backward technology

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"Professor Cai, please comment. My students, using materials from your school's laboratory, what technical level can this two-color metal ring produced by sintering be achieved?"

As soon as Ye Qing entered, he saw a middle-aged man dressed in blue western-styled clothes with some acne marks on his face. He laughed and patted the young student next to him like a slot machine.

In the hands of this student, there was a metal ring that attracted Ye Qing's attention.

This is a metal ring with a square cross-section, the size of which is the same as that of the ordinary bracelet.

The metal ring produced by sintering in the powder metallurgy laboratory naturally uses powder metallurgy technology processing. But this metal ring is half golden and half silver.

The most important thing is the intersection of the two colors, without any traces of splicing and polishing, it is completely integrated.

"Very...awesome." Zhongyun University leads the team, Professor Cai Chenning. At this moment, I don't know if the temperature emitted by the sintering furnace in the room is too high, or some other reason. Anyway, Professor Cai Chenning's forehead is already covered with fine beads of sweat.

However, on the side of Nikkei University of Science and Technology, all of them looked happy, with no sweat on their foreheads.

"Can you also ask your school to show us the powder metallurgy technology?" Professor Kobayashi Sei, led by the Nikkei University, bent over and made an invitation posture: "It does not have to be two metal sintering together, other Yes, as long as your school thinks it is advanced."

Another defeat...

The green veins on Professor Cai Chenning's forehead are jumping back and forth.

From the perspective of rank, there is no doubt that Nikko University is much better than Zhongyun University. However, before Professor Cai Chenning some simply believed that this academic exchange was not the most cutting-edge national industrial laboratory technology competition between the two countries.

They are both college students and college students. Even if the technology gap is not representative Zhongyun University, there is nothing you can't get out of, let the students of Japan Institute of Technology open an eye opener.

However, as a result, Professor Cai Chenning's heart jumped out.

So far, there have been seven technical competitions in total, and Zhongyun University has only pulled back one round.

Sure enough, the game they lost in the morning was found in the afternoon.

Came to visit the powder metallurgy laboratory in the afternoon. Professor Kobayashi Sei, who led the team, couldn’t wait to let one of them unscrupulous students to use the materials in the laboratory to give them a good lesson for the Mechanical Engineering Department students.

The heterogeneous metal sintering.

In the industrial processing field, such a problem is often encountered.

How to weld two metals with different materials together?

As the saying goes, the difference is not conspiring. This is also applicable in the metal welding industry. Different metal due to the different melting point and characteristics, forcing the welding, it will definitely fall to the ground due to the low strength of the welding place, "Pattern ~" will break into two pieces.

The welding of dissimilar metal is extremely difficult, not only requires a very deep understanding of metal material, can come up with various flux solutions according to local conditions, but also master the master-like welding technology to weld industrial parts with qualified strength.

People who master this technology are all the treasures of Factory competing with each other.

In powder metallurgy, sintering of heterogeneous metal is also difficult to Boss.

Because of the different melting points of metal, it is necessary to add one layer to the bonding place of the two kinds of metal, which can stick the two materials. In this way, if you want sintering to produce a qualified product, you often have to scrap more than a dozen products.

Inherent deficiencies, it is destined that whether it is a different kind of metal welding or a different kind of metal sintering, it can only be a very small and very deep processing technology.

But just this afternoon, a graduate student at the University of Nikkei, using silver and copper powdered metal, succeeded in sintering a perfect heterogeneous metal ring without adding adhesive.

However, this product is not an unusable product.

In order to prove this point, the student had already handed over his work to Zhongyun University and tested it with a tensile tester.

"Professor Kobayashi Sei, it's getting late, I think the students in your school must be hungry. Tonight, the cafeteria has prepared a piece of roast duck for everyone. Why don't you let the students eat and chat?" Professor Cai Chenning fought helplessly Sloppy, and also admitted in disguise that Zhongyun University students cannot come up with similar powder metallurgy technology.

The Japanese University of Science and Technology sent a graduate student, so in accordance with the conventions and conventions, Zhongyun University can only send graduate students or college students.

Professor Cai Chenning can't play by himself.

"Neither hungry nor hungry." Kobayashi raised his head, his eyes shot two triumphant rays: "Tanaka, you can talk to them about the firing skills of alien metal."

The student holding the metal ring raised his head proudly and looked around the audience: "The physical properties of different metals vary greatly. The sintering technology I used once is based on the principle of gradient joints. First, I will use the two powdered metal one by one. Placed in the mold and pre-pressurized to form~IndoMTL.com~The process of using the electric furnace sintering subsequently has the most stringent requirements for temperature control."

"The melting point of silver is 961 degrees, and the melting point of copper is 1083 degrees. How to find the balance point of these two metal melting points is that the two materials powder have different pressures. Because of the void density between the materials, Determines the melting speed."

The students on Zhongyun University avoided Tanaka's eyes one by one.

If you lose, you lose. Who makes technology worse than people?

Fortunately, this Tanaka student didn't take the opportunity to show off a sense of superiority, otherwise they would have the heart to find a way to get in.

The people at Tanaka are good. They not only lay out the technical points, but also don't hurt people.

This group of students are too naive. The Japanese University of Science and Technology has come across the oceans and does not hit people. Isn’t that in vain?

"merely..."

"During the operation, I found several problems."

The student named Tanaka suddenly changed his tone and his tone became proud: "Your device is too backward, in our school laboratory. The stamping machine tools used for embossing is a multi-angle CNC punch of Yamazaki Mazak Company. ."

"Your device, the angle is not adjustable, it is let it be, even the impact coefficient is not adjustable."

"Our school, the scrapped device piled in Warehouse, is also more advanced than yours."

"There are also these powdered metal. As early as the 1960s, Ueda Ryoji Professor, we invented the ultrafine metal nanoparticle preparation technology." Tanaka twisted the powdered metal remaining on the twisted fingers: "But you still take this Used for something as coarse as flour."

"The most critical electric heating sintering furnace, it is not even as good as our technology level in the last century. The laboratory must look like a laboratory. How can we promote the progress of powder metallurgy technology with this elimination of device?" To be continued.)