"Buzz~" The sound of the drill bit driven by the spindle rotating and rubbing is like a giant beast roaring in a low voice. Pen % fun % Pavilion www.biquge.info

The cutting fluid used for cooling is adjusted to the maximum as if it were not for money.

The students in the live broadcast room held their breath again.

Little by little, a minute passed. Kobayashi Jing couldn't stand still, so he hurriedly went to the five-axis machining center and stretched out his head to look in through the observation window.

Because after a full minute, the spindle has not moved.

The great thing about the five-axis machining center is that the spindle can move at will at multiple angles. This makes it easier to maintain accuracy than a conventional machine tool that moves the material being processed.

But a minute passed, and the fact that the spindle did not move only means one thing, the drill bit on the spindle has not yet cut the material.

"Speed up to two thousand. Kobayashi said quietly.

"Huzz~"

In this high-speed machining center, after the speed is increased, the sound of the drill bit rubbing on the iron ruler makes even the students in the live broadcast room can't help but stand up when they hear it.

Curling green smoke rises slowly from the observation window of the five-axis machining center.

Before they could come back to their senses, the green smoke was like chicken blood, and Sun quickly turned into black smoke.

"Burn the knife ~ burn the knife ~" The student of Zhongyun University next to him anxiously reminded: "Shut down, don't damage our equipment." ”

The students of the Japanese Institute of Technology hurriedly stopped the machining center, the automatic hatch opened, and the cutting fluid used to cool down and the smoke emitted by the high temperature heating of the metal made the choking people cough.

Fortunately, the circulating cutting fluid quickly cooled the drill bit, and the students of the Japanese Institute of Technology took off the drill bit and looked at it, and their cheeks suddenly turned into fiery clouds.

The top of the drill bit has burned out colorful traces like a rainbow because of the high temperature. This kind of thing, which usually happens in workshop-level processing plants, actually happened to them.

Friction will cause high temperature, under normal circumstances, there is cutting fluid and cut metal wire heat dissipation, the drill bit will not burn the knife. However, if the spindle is given to the knife and the material does not move at all, the friction will continue to rise, and as the speed increases, even the cutting fluid cannot take away all the heat, and then the knife will be burned.

The iron ruler was also removed from the clamp, and then everyone saw that there was no trace of the back of the iron ruler.

It's not intact, but if you look at it with a magnifying glass, you can still see the place where the drill bit was processed before, and there is a rough feeling.

But if you want to engrave words on it, you can't even burn a thousand more heads.

"This ...... This is impossible!" Tianzhong, who was in charge of controlling the center of the five axes, held the iron ruler with protective gloves and shouted: "How can you not even drill a pit?"

Kobayashii said in front of the camera that he wanted to show everyone the level of our country in metal materials.

Now that the knife head has been burned by them, compared with the intact iron ruler before and after, the audience in the live broadcast room is about to spray a mouthful of water and laughter on the screen.

"Even if you can't measure the accuracy accurately, you can't engrave the ligatures now. Allow me to sympathize with them for 0.1 seconds. ”

"In all fairness, they did dump us in materials science, but who let us have Behemoths?"

"I decided, I will go to work in Monster Heavy Industries after graduation, it is too honorable. ”

"The one who is going to work at Behemoth Heavy Industries, wake up. ”

Half an hour later, after intense preparation on the side of the Japanese Polytechnic Institute, the iron ruler was moved to the plasma arc cutting machine.

Kobayashi has decided that no matter what, he will also carve this word out.

Although arc cutting is suitable for dealing with high cemented carbide, its cutting has no precision at all. Even if you can cut out those words in the end, not to mention the amazing effect of not being able to see the handwriting at a horizontal angle, even if you can't even meet the viewing level of a little bit of attention.

The dazzling blue arc raged on the back of the iron ruler, and the loud noise of the arc piercing the air whipped the eardrums of the nearby students.

It's a pity that what happened on a five-axis machining center happened again on a plasma arc cutting machine. The arc swept through countless channels, but the biaxial moving workbench below did not move.

The iron ruler was removed again, and only a subtle color change occurred on the surface.

Kobayashii's eyes straightened when he looked at the iron ruler, and materials that are usually difficult to process with machine tools, such as stainless steel, will become more obedient than cream in the face of arc cutting.

But when I encountered an iron ruler, I couldn't even shake a layer of skin.

"Ouch~ It's hot. Xiao Linjing suddenly shook his hand exaggeratedly, and deliberately put the iron ruler out.

The iron ruler jingled and bounced far away, and then the barrage was full of shameless news about his crusade.

If it is too strong, it is easy to break, and even the ancients understood it. The harder the metal object, the more brittle it tends to be. For example, the glass windows in the average home are harder than 90 percent metal, but they can shatter with a fist.

Take tungsten steel, which is extremely hard in the metal, for example, the long strip of tungsten steel falls to the ground, and 10,000 percent will be shattered. The tungsten carbide drill bit used in the machine tool should be stored in a special tool box on weekdays to prevent bumping.

This iron ruler is so hard, maybe it's also very brittle......

The iron ruler bounced a few times, and landed not far from Ye Qing.

Picking up the intact iron ruler and handing it to Xiao Lin Jing again, Ye Qing raised his eyebrows: "Professor Xiao Lin, why am I touching this iron ruler, it's not hot at all?"

"There's... Is there a high-power laser cutting machine?" Kobayashi was both ashamed and shocked, and his face was full of embarrassment that could not be concealed.

A Siemens 4500W laser cutting machine was adjusted, and after the protective cover was lowered, it took five minutes before slowly turning on.

This time it was opened, in addition to the iron ruler with a layer of charcoal on the surface, there were also ugly pig liver faces of the Japanese University of Science and Technology.

As long as the layer of carbon deposits is washed off with liquid, the surface of the iron ruler will be the same as when it was first brought over.

What else is engraved, now Kobayashi Jing feels that it is already a great satisfaction to be able to leave a shallow mark on the iron ruler.

"Yes...... No...... Lend us the laboratory for one more night?" Xiao Linjing, who was self-conscious, covered his face and asked Professor Cai next to him.

"Is there a must to continue?" Professor Cai Chenning spread his hands: "Of course, if you still want to continue, I have no opinion." ”

I've tried everything I can do, and everyone already knows the results.

Professor Cai Chenning sighed and asked the teacher in charge of the laboratory to accompany him. Ye Qing also waved at Xiao Linjing and the others, preparing to leave.

"What should I do, don't go, live brother, I want to see if they can leave traces on the iron ruler. ”

"Which big brother from the Department of Mechanical Engineering can give me a science popularization, what kind of material is this iron ruler made of?"

"The graduate student of the Department of Mechanics in the Zero Realm told you that the iron ruler was made of Erdman alloy, which is found in Captain America's shield. ”

"I'll give you a gift, don't leave the classmate in the live broadcast. ”

"Got it, I'm not leaving. In the live broadcast screen, there was a heart-warming voice.

Out of the door of the mechanical laboratory, Ye Qing's mood also became relaxed.

"Mr. Ye, I really don't know how to thank you. Professor Cai Chenning, who came out with him, held Ye Qing's hands tightly, and said in an excited tone: "Without you, our school would really become a laughing stock this time." ”

"Haha~ And that iron ruler, they want to carve the master of the world, and they are about to suffocate me, I pinched my thigh to hold myself from laughing. ”

"Teacher~ You're welcome, it's just a gesture. The corners of Ye Qing's mouth showed a pleasant smile, this thing is really cool, and the eyes of those juniors and sisters looking at themselves are all worship.

"That iron ruler, Mr. Ye, how did you do it, it seems to have reached the point where it is uncontrollably destroyed. ”

Ye Qing was about to talk about the general steps of making an iron ruler when a phone rang interrupted the following words.

The call was made by the sales manager Kong Tao, and as soon as the phone was connected, he hurriedly said: "Boss~ Look at the news, it is the news pushed in WeChat." (To be continued.) )