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"Buzz ~" The sound of the drill bit rotating and rubbing driven by the spindle was like a giant beast in a low roar. [Love ↑ Go △ Small ↑ Say △ w
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The cutting fluid for cooling was adjusted to the maximum as if it didn't cost money.
The students in the live broadcast room held their breath again.
Time passed by a little, and after a minute. Kobayashi Well couldn't stand still. He quickly went to the five-axis machining center and looked in through the observation window.
Because after a full minute, the spindle still hasn't moved.
The power of the five-axis machining center is that the spindle can be moved at multiple angles at will. It's easier to maintain precision than traditional machine tools that move the processed material.
But after a minute, the spindle didn't move, which can only mean one thing. The drill bit on the spindle has not cut the material.
"Increase the speed to two thousand." Kobayashi Well whispered.
"Buzz ~"
After the speed of this high-speed machining center was increased, the friction sound of the drill bit on the iron ruler, even the students in the live broadcast room couldn't help but feel goosebumps when they heard it.
The curling smoke rose slowly from the observation window of the five-axis machining center.
Before they could react, the green smoke quickly turned into black smoke as if it had been injected with chicken blood.
"Burn the knife ~ burn the knife ~" The students of Zhongyun University next to them anxiously reminded: "Stop quickly, don't break our equipment."
The students of the Japanese Institute of Science and Technology quickly stopped the machining center, and the automatic hatch opened. The cutting fluid used to cool the temperature and the smoke from the metal heated by the high temperature made people cough.
Fortunately, the circulating cutting fluid quickly cooled the drill bit. The students of the Japanese Institute of Science and Technology took off the drill bit and their cheeks suddenly turned into burning clouds.
The top of the drill bit has been burned with colorful rainbow-like marks because of the high temperature. This kind of thing, which usually happens in workshops and processing plants, actually happened to them.
Friction will cause high temperature. Under normal circumstances, there is cutting fluid and the cut metal wire to dissipate heat, and the drill bit will not burn the knife. However, if the spindle was given to the knife, and the material did not move, then the friction would continue to increase. As the rotation speed increased, even the cutting fluid could not take away all the heat, and then the knife would burn.
The iron ruler was also removed from the clamp. Then, everyone saw that there was not a single mark on the back of the iron ruler.
It wasn't completely unscathed. When he looked closely with a magnifying glass, he could still see that there was some roughness in the area where the drill bit had previously processed.
However, if he wanted to carve words on it, he would not be able to do so even if he burned a thousand blades.
"This … this is impossible!" The Tianzhong student, who was in charge of controlling the five-axis center, held the iron ruler with a protective glove and shouted, "Why can't you even drill a hole?"
Kobayashi Well had said in front of the cameras that he wanted to show everyone the level of metal materials science in China.
Now, the tip of the knife had been burned by them. Compared to the undamaged iron ruler, the audience in the live broadcast room almost spat out a mouthful of saliva onto the screen.
"It's one thing if you can't measure the precision, but you can't even carve the words now. Please allow me to sympathize with them for a second. "
"In all fairness, they are indeed behind us in material science, but who let us have Monster Heavy Industries?"
"I've decided to go to work in Monster Heavy Industries after graduation. It's too honorable. [Love ↑ go △ little ↓ say △ w]
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"The one who's going to work in Monster Heavy Industries, wake up."
Half an hour later, after intense preparation on the side of Japan Institute of Technology, the iron ruler was moved to the plasma arc cutting machine.
Kobayashi has decided that no matter what, he will carve this character.
Although the arc cutting machine is suitable for dealing with hard alloys, its cutting has no precision at all. Even if the words can be cut out in the end, not to mention the amazing effect of not being able to see the handwriting at the horizontal angle, even if it can't be met with a little attention to the level of appreciation.
The dazzling blue arc raged on the back of the iron ruler, and the loud noise of the arc breaking through the air whipped the eardrums of the nearby students.
Unfortunately, the scene that happened on the five-axis machining center happened again on the plasma arc cutting machine. Countless electric arcs swept, but the two-axis moving workbench below did not move.
The iron ruler was taken off again, and there was only an inconspicuous color change on the surface.
Kobayashi Well looked straight at the iron ruler. Materials that are usually difficult to machine, such as stainless steel, will become more obedient than cream in front of the arc cutting machine.
But when encountering the iron ruler, even a layer of skin can't be shaken.
"Ouch ~ It's hot." Kobayashi Well suddenly shook his hand exaggeratedly and deliberately threw the iron ruler out.
The iron ruler bounced far away, and then the bullet screen was full of messages that crusaded against his shamelessness.
Even the ancients understood the truth that too strong is easy to break. The harder a metal object is, the more brittle it is. To give a simple example, the glass window in an ordinary home is harder than 90% of the metal, but it can be broken by a fist.
Take the extremely hard tungsten steel as an example. When the strip of tungsten steel falls to the ground, it will break ten thousand times. The tungsten steel drill used in machine tools is usually stored in a special tool box to prevent collision.
This iron ruler is so hard, maybe it's also very brittle …
The iron ruler bounced a few times and landed not far away from Ye Qing.
Ye Qing picked up the intact iron ruler and handed it back to Kobayashi Well. He raised his eyebrows, "Professor Kobayashi, how come this iron ruler doesn't feel hot at all when I touch it?"
"Is … is there a high-power laser cutting machine?" Kobayashi Well was ashamed and shocked. There was also an unconcealable embarrassment on his face.
A Siemens 45 megawatt laser cutting machine was adjusted. After the protective cover was lowered, it slowly opened five minutes later.
This time, in addition to the iron ruler that had a layer of charcoal on its surface, there were also ugly pig liver faces from the Japan University of Technology.
As long as the layer of charcoal is washed off with liquid, the surface of the iron ruler will be no different from when it was first brought over.
Kobayashi Well felt that it was already a great satisfaction to leave a shallow mark on the iron ruler.
"Can... Can... Lend us the lab for one more night?" Kobayashi, who was ashamed, covered his face and asked Professor Cai next to him.
"Is there a need to continue?" Professor Cai Chenning spread out his hands, "Of course, if you want to continue, I have no objections."
They had already tried everything that could be tested, and everyone already knew the result.
Professor Cai Chenning yawned and asked the teacher in charge of the laboratory to stay here. Ye Qing also waved at Kobayashi Well and prepared to leave.
"What should we do, what should we do? Brother, don't go. I want to see if they can leave a mark on the iron ruler."
"Which big brother in the mechanical engineering department can tell me what this iron ruler is made of?"
"The mechanical graduate student in the Zero World can tell you that the iron ruler is made of adamantium. Captain America's shield has this kind of composition."
"I'll send you a gift. Student, don't go."
"Okay, I won't go." A refreshing voice came from the live broadcast.
Having exited the mechanical laboratory, Ye Qing's mood had also become relaxed and happy.
"Mr. Ye, I really don't know how to thank you." Professor Cai Chenning, who followed Ye Qing out, tightly held his hands and said excitedly, "Without you, our school would have really become a laughing stock this time."
"Haha, and that iron ruler. They want to carve the Teacher of the Century. I almost couldn't hold it in. I pinched my thighs to stop myself from laughing."
"Teacher, you're welcome. It's just a small matter." Ye Qing's lips curled into a happy smile. This matter was indeed very satisfying. Also, the way those juniors looked at him was full of worship.
"That iron ruler, Mr. Ye, how did you do it? It seems to have reached a level where it can't be destroyed."
Ye Qing was about to talk about the general process of making the iron ruler when a phone call interrupted him.
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