Chapter 379: Now thats a real sintering (1/2)
Kobayashi and his colleagues thought that the Japanese University of Science and Technology far surpassed Shanghai University in the research of powder metallurgy technology. Then, after seeing Ye Qing's blending technique as if adjusting pigments, he felt very funny.
High-purity alcohol has volatile properties and can theoretically act as a humidifying agent. However, when it is used in various metal and non-metal powders, chemical reactions may occur and the density of the powder will increase because the embryo is compressed by the hydraulic machine and the phenomenon that the internal alcohol cannot be completely volatilized. So, in order to solve this problem, it is necessary to put the embryos on the shelf for a long time to let the alcohol completely evaporate.
This is a waste of time and a natural placement. After the embryo is dried, it may appear slightly deformed, increasing the rate of product failure. For that, this technique has long been eliminated on their side and changed to a special humidification fluid. There are also mixtures in this laboratory, there are only backward ball mills, but now the three-dimensional motion mixer is the standard equipment in the first-class laboratory.
There are too many bad points, insist on not make complaints about it!
Kobayashi had a feeling of backward feeling when he came to the university laboratory thirty years ago.
Ye Qing sneered at the Japan University of Technology team and ignored the mocking eyes, mixed five main powders by himself, and then put them into ring molds with different specifications using a hydraulic press to die-cast into five circles with different sizes. The smallest round accessory was only the size of a wine bottle cap, and the largest was similar to a bracelet. If you measure their diameters, you will find that these rings are from small to large, and the outside of each ring is slightly larger than the one above.
”Are you doing the Olympic rings?” Tanaka smiled indifferently: ”The 2020 Olympics will be held in our country. Speaking of the location of the opening ceremony [New National Arena], the mechanical automation system in it is still made by our responsible school for the design.”
An industrial microscope used to observe the micropore structure on the surface of the material was adjusted by Ye Qing. The microscope was then used to observe. Ye Qing used a micrometer to carefully measure the size of each round embryo while using a knife on the edge of each blank, a semi-arc concave and convex surface like a gear was carved.
Without giving them time to appreciate, the embryos were assembled, and they were directly sent by Ye Qing to the pre-heated vacuum sintering furnace and everyone watched nervously as the temperature of the sintering oven increased. Ye Qing looked at the watch on his left hand and calmly said: ”Wait another twelve minutes.”
”Do you want me to count the time for you?” Kobayashi flaunted and raised his left hand, showing a silver-white dial, a matt black metal strap watch, shaking: Seiko Minute Repeater mechanical watch with chronograph Stopwatch function, daily travel time error is controlled within 0.5 seconds. ”
”Uh…”
Ye Qing dragged his sleeves to unveil this piece in his hand. There is only a piece of Patek Philippe 2499 red gold series handed down in the world. Some difficult words said: ”No...use it.”
Some opposing atmosphere which lasted until the vacuum arc furnace was re-injected with protective nitrogen to balance the internal and external atmospheric pressure before they were broken by great tension.
”It will definitely break into glass.” Kobayashi whispered in the ears of Tanaka's ears, not worrying they would be turned over.
Ye Qing smiled, wearing insulating gloves and using special pliers, from which a fiery red disk with a shape similar to jade Bi was pinched out. The fiery red disk is like a magnet, instantly attracting everyone's attention, and there was a sound of inhalation in the powder metallurgy laboratory.
”It's not broken?”