I am farming in the real world.

Chapter 277 The dawn of hope?
"The rotation lasted more than 15 minutes?"

"How can this be!"

"It's just a simple metal connection. Even if the contact surface of the two is polished to a very smooth degree and bearing balls are added, it is unlikely to achieve a rotation effect similar to this 'semi-perpetual motion machine'!"

The Tesla engineers in the conference room were completely furious.

When faced with this metal bamboo dragonfly toy that rotated for more than 15 minutes, the first thing that flashed through everyone’s mind was “Impossible!”

Because from the video, the top metal square plate and the top rod at the bottom of this toy are in T-shaped contact.

As long as the metal square above rotates, the connecting part will be affected by the friction force caused by the relative tendency of mutual squeezing, which will produce passive work and heat effect.

This is how frictional heat is generated!
Moreover, when metal rubs against each other, even if the contact surfaces are very smooth, they will be heated and produce metal stress and thermal deformation.

"Ordinary metal products simply cannot achieve this level of almost negligible friction!"

"Unless it is a grinding process with very high processing precision, combined with some special alloy, it may be possible."

"If BOSS were in our Tesla factory and used professional equipment to measure this incredible toy on-site, then combined with test data analysis, perhaps we could find out the truth." The engineers whispered to each other and discussed their opinions.

It seems that this reward of 10 million US dollars is not so easy to get.

After all, there is the Pacific Ocean between us, and it is impossible to analyze the actual specifications and dimensions of this metal product and the processing technology behind it just by watching the video.

However, there are also some engineers with strong hands-on skills who, a little bit unconvinced, took the data measured by Musk and ran to the laboratory to conduct replication experiments.

How can an ordinary person sit still when faced with the temptation of 10 million dollars?

Even if we only have basic size data, we can first use similar materials and high-precision technology to make this bamboo helicopter.

At that time, we will compare them one by one, make further adjustments in process and materials, and gradually get closer to the original in Musk's hands.

It's just that when these great engineers took the drawings and tried to replicate them.

The rotation time of those replicas is far inferior to the terrifying performance of the originals shown in the video!
Even if the grinding process was gradually improved from the decimeter level to the micrometer level, and even later to the nanometer level used in the aerospace field, the longest rotation time was only 8 or 9 minutes.

You know, Musk is not just the boss of Tesla.

The company under his name, SpaceX, is a serious aerospace company with the ability to manufacture large rockets.

With the help of aerospace-grade processing precision, it is easy to grind the surface of a piece of metal or a metal cylinder to the nanometer level.

However, even with this level of processing precision, the replica is far from the bamboo dragonfly shown in the video, which can rotate for more than 15 minutes!

An inexplicable chill began to envelop the hearts of these Tesla engineers.

……

And in this intense replication attempt, time passed quickly.

Musk and the Model X he was riding in almost broke the speeding record on the Chinese Expressway, rushing all the way from Rui County back to the Tesla factory in Shanghai.

Once he returned to his base camp, Musk felt that the inexplicable fear in his heart was mostly offset.

Because in the test on the car just now, the longest rotation time of this damn thing in his hand was as high as 16 minutes and 12 seconds!
In order to test the rotation limit of this thing, he and Boeing representative Larry took turns to try it out.

After nearly 4 hours of high-speed driving, the two people were almost exhausted! When Musk saw his own super factory, how could he not feel like he had seen a savior?
"Hurry! Prepare a clean room, and let the engineering team bring the equipment over for testing! I want to see what this damn thing is made of..." Musk gave orders.

Soon, the engineering team at the Tesla factory in Shanghai began a series of inspections on the metal bamboo helicopter.

First of all, let’s look at the materials used in this bamboo dragonfly. We first scanned it with a common metal composition detection instrument on the market, and then used a professional atomic emission spectrometer (AES) to detect it.

In the end, an analysis conclusion was reached that even Musk found reliable.

That is, the upper and lower components of this bamboo dragonfly are both made of an alloy called NiCr20TiAl.

This is a nickel-based precipitation-hardening high-temperature alloy. It uses nickel and chromium as the matrix and achieves dispersion strengthening by adding aluminum and titanium to form a γ′ phase. It has good creep resistance and oxidation resistance and is widely used in automotive internal combustion engines, aviation, and aerospace fields.

And SpaceX’s procurement list happens to include this same type of nickel-based high-temperature alloy!

The supplier is from Tsingshan Holdings, which is adjacent to Magic Cube Group.

When the material composition parameters of the two are compared, they are almost identical.

This immediately made Musk and Tesla engineers realize that the main material of the magical Flying Rubik's Cube that was circulated on the Internet might be the nickel-based alloy material supplied by Vancouver's Tsingshan Holdings!

"Ness!"

"Whether it's the gloss and color on the surface or the composition in the spectrum analysis, it should be this alloy!" Musk applauded, feeling that he was close to the answer he wanted.

As long as the constituent materials of the bamboo dragonfly are analyzed, the only thing left to be solved is the problem of processing technology.

Musk, who was tortured to the point of suffering from nervous breakdown, now seemed to have seen a ray of hope in the fog of war!
However, when this material analysis list was shared and published on the Tesla and SpaceX intranet bounties.

The mechanical engineers who received the reward all frowned.

Because they found that even if they knew the same material model, they could not make a replica with similar performance no matter which processing equipment they used.

No matter whether it is the TiTAN turning-milling machine from Italy's Breton, the HSC five-axis PBZ contour machining center from Germany's Handtmann, or the small Mazak precision grinder, none of them can help!

At the same time.

In the laboratory of Tesla's factory in Shanghai, in-depth testing of this bamboo helicopter has not yet been completed.

After completing the material analysis, a Tesla engineer wearing a dust-proof suit placed one of the top metal square pieces into a small, sealed constant-temperature chamber and scanned it with an advanced laser level on the market.

The purpose of doing this is to prevent room temperature, humidity, and airflow from affecting the state of the metal and causing errors in the measurement results.

But when the level emitted a laser beam and swept along one side of the metal square.

The real-time display of the laser target reading data on the large screen in the laboratory made the Tesla engineer's eyes widen, as if he had seen a ghost!
"What?"

"The target's laser loss rate is 0%?"

"impossible!"

"How can this be!"

“No matter how high the processing accuracy is, there should be burrs or tiny bumps on the surface!”

(End of this chapter)