A big country of aerospace with black technology

The 80,000-ton super large die forging machine, like a steel monster, sits quietly in the tall factory building.

The height above ground is 27 meters, the depth is 15 meters underground, and the total height is 42 meters.

Equivalent to a 13-story high-rise building.

The dead weight alone is 28,000 tons!

It is undoubtedly the strongest steel machine in mankind.

The forging table can provide powerful pressure up to 1000MN.

The equivalent of an entire nuclear-powered aircraft carrier resting on its forging table.

In order to build this world-class industrial manufacturing equipment, domestic industrial workers spent nearly thirty years.

Since more than 20 years ago, we have been exploring the manufacturing technology of 80,000-ton large-scale die forging machines.

Over the years, we have continuously overcome difficulties in hydraulics, electromechanics, transmission, etc.

Finally, this steel behemoth, which can be called the blood-producing machine of the Republic, was completed.

With it, one can continuously produce extremely large steel components.

All the processing problems that have troubled us for a long time have been eliminated.

For example, the Yunshi project unfortunately died thirty years ago.

To a large extent, this was because at that time, there was no large-scale die forging machine in China that could process large-scale fuselage beams.

As a result, after the successful test flight of Yun-10, it only flew for 170 hours and had to stay on the ground permanently.

This is why it is now possible to build ultra-large long-range stealth bombers.

and a large strategic transport aircraft that is about to be completed.

"You can only use the big forging machine once, so you must cherish it."

Chen Xiaoci looked at her watch and looked serious.

As the die forging machine with the strongest forging capability in China.

I don’t know how many people are staring at this machine.

If someone from the Railway Research Institute were to make an appointment, the queue would probably be three years away.

In the end, it was Zhang Xingyang who found a way and finally got a chance to jump in line.

"I understand, I'm going to trouble you this time!" Geng Bo looked at the forging platform with a red face, which revealed a fiery red color.

What they jumped in line to squeeze out was the forging and forming of the fuselage beams of domestic large-scale transport aircraft.

For this they had to wait another three days.

The person in charge of the large transport aircraft fuselage beam forging and forming project is Chen Xiaoci.

"Hopefully you guys can actually succeed this time."

Chen Xiaoci put his hands in his pockets and looked at the rumbling machine.

It seems that Liu Ding Liu Jia, the master of divine fire and true thunder, is forging a peerless magic weapon.

In a sense, the keel made of titanium-nickel alloy is also a super weapon.

Inside the die forging machine, the metal ingots were being torn apart like dough.

Under the powerful pressure of the hydraulic system, titanium-nickel alloy, which ranks among the strongest on earth, is nothing more than a ball of plasticine that can be easily rounded and flattened.

"It will be successful. We have enough confidence in the die forging machine."

Geng Bo pushed up his glasses and said.

Strictly speaking, the titanium alloy Longguo requirements actually exceed the fuselage beam forging requirements of large transport aircraft.

The red metal ingots exude a hot atmosphere on the forging table.

The metal ingot, which was originally a rectangular parallelepiped, became smaller and smaller under the strong pressure.

During this process, the crystal grains of the metal will be gradually refined, improving all aspects of its performance.

An hour later, the sound of "Boom! Boom! Boom!" stopped.

A crowd of people gathered around the forging table of the 80,000-ton die forging machine, ignoring the sparks flying above and the rising temperature.

The originally closed forging table slowly opened.

The titanium-nickel alloy keel weighing more than one hundred tons was forged.

The titanium alloy, which is hundreds of meters long, shines with golden-red light.

People can't help but think of the legendary Dinghai Shenzhen Iron - Ruyi Golden Cudgel.

Rumor has it that it was used by Dayu to control floods and weighed 13,500 kilograms.

But compared with this super big stick that is 450 meters long and weighs 200,000 kilograms.

It’s nothing.

A thick mechanical arm placed the titanium alloy keel that had not yet cooled down onto two circles made of iron cables.

Then the large gantry crane in the factory slowly moved it aside.

To prevent the ground from melting, it was not put down.

Instead, it is suspended directly in the air for cooling.

"Will there be any minor repairs needed after this?"

Geng Bo kept staring at the titanium alloy keel and asked Lao Huang without looking back.

This is not the first time that Lao Huang has used this 80,000-ton die forging machine, and he has some experience.

"According to our previous experience, it is not necessary."

"Although generally smelted metals will inevitably have tiny holes inside."

Lao Huang talked eloquently: "But the strong pressure of the die forging machine can save us from this trouble. It will fill all the internal defects."

It is difficult to avoid the occurrence of small holes inside large metal blocks.

These are basically caused by air entering into it during the smelting process.

Although unlike castings, large voids visible to the naked eye will be produced.

However, small voids will still have a great impact on the strength of structural parts and other aspects.

If we say that the metal ingot that has just been smelted is a huge and unsolidified mass of soil.

Then the alloy keel that has been mercilessly ravaged by the 80,000-ton die forging machine is the steel knife that has been polished.

Virtually indestructible!

"Let's go over and have a look."

Watching the super long titanium alloy keel slowly cool down.

From the golden color at high temperature, it returns to the silvery white color at low temperature.

Although it is no longer so dazzling, people can feel its hardness.

"I don't know if it can support the huge space station structure."

Geng Bo carefully looked at the not thick titanium alloy keel in front of him and thought to himself.

The titanium alloy keel is only fifteen centimeters thick.

It feels like if you place it at an angle, it might even break on its own.

But it also has extremely strong stiffness.

Even though the two suspension points are hundreds of meters apart, there is still no elastic deformation that can be distinguished by the naked eye at the center.

For the roller-type space star port, they have also initially designed some simple cabin sections.

These cabin sections are designed to be composed of arcs.

Each arc is more than 300 meters long and has a mass of 1,000 tons.

The overall mass reaches tens of thousands of tons.

The tens of thousands of tons of star port cabins are hung on such alloy rods that are less than 20 centimeters thick.

"Be prepared to conduct performance tests in all aspects."

Geng Bo ordered the people around him.

It is not an easy task to carry out a 450-meter-long alloy keel.

The process of transferring the alloy keel alone took several hours.

In the end, a test bed was built specifically for it.

Because the traditional test bench is difficult to put down.

It is possible that the Railway Research Institute's test bed, which is specially used to test seamless rails, can be accommodated.

But it's not very convenient.

It took an hour to forge the titanium alloy keel.

The preparation time for the test alone took nearly three days.

Five more days passed for the subsequent tests.

After spending more than half a month, Geng Bo finally got the first titanium alloy keel.

And completed relevant testing work.

"It should barely meet your application standards."

Lao Huang said after leading the people to complete all the test projects.

“In terms of strength, it just meets the standard, but in terms of stiffness, it’s a little bit exceeded.”

In fact, Geng Bo would be satisfied if he could achieve 90% of the predetermined goal.

It’s an unexpected surprise to be able to meet all the requirements now.

"Once we complete the high-temperature memory test, we can officially start production."

Old Huang's eyes seemed to be filled with small money symbols, and he was extremely excited.

Once production officially starts, they will be able to take this huge order.

"Our high-temperature memory test has very high requirements."

Geng Bo reminded.

"If it doesn't pass, it's impossible for us to place the order."

Lao Huang could understand the other party's caution and didn't say much.

He took the person directly and started the high-temperature memory test.

Before this, high-temperature processing is required.

The first step is to heat the processing chamber where the alloy keel is located to nearly 100 degrees.

This temperature is not considered high temperature for titanium-nickel alloy.

There are almost no significant changes in its other properties.

A special bending machine slowly bends the alloy keel.

The ultra-high stiffness of titanium-nickel alloy has become an insurmountable mountain at this time.

The special powerful bending machine has almost reached its maximum power.

But it can only bend the alloy keel bit by bit.

The keel even made a heartbreaking creaking sound.

The bending machine worked at full capacity and it still took ten hours.

Only then did the alloy keel coil into a circle.

It became a flat disk with a diameter of about ten meters.

A little over three laps in total.

However, also because of the ultra-high stiffness, the alloy keel rebounds very slowly after bending.

If it is kept at about 100 degrees, there will be basically no rebound.

"Now lower the ambient temperature to room temperature."

Lao Huang gave an order, and several powerful fans in the processing room were turned on, blowing away the original heat in the processing room bit by bit.

During this process, the originally circling alloy keel began to slowly straighten at a speed visible to the naked eye.

The cooling speed of high-power fans is even faster than that of high-power air conditioners.

In less than thirty minutes, the processing chamber dropped from a high temperature of one hundred degrees to nearly room temperature.

The outermost ring of the flat disk-like alloy keel has also been opened.

It turned into an irregular circle.

"It looks like it will be completely restored to its original state within an hour."

Lao Huang also gained a little confidence at this time and said to Geng Bo with a smile.

Geng Bo didn't say anything, but stared closely at the alloy keel that was still slowly stretching in the processing room.

Old Huang also turned his head and looked at the alloy keel, muttering in his heart.

I hope this titanium alloy steel rod can be restored to its prototype soon.

Preferably not even a little bit of bend.

Among the requirements, the straightness of the titanium alloy keel after restoration is very high.

Maybe Lao Huang's prayer had some effect.

An hour passed in the blink of an eye.

The titanium alloy keel has returned to its apparent straightness.

To the naked eye, there is no bend at all.

But the specific situation still depends on the data measured by the straightness measuring instrument.

"The overall flatness error is 4mm, which is 20% better than our requirements."

After measuring the data, Lao Huang finally felt relieved.

This means that this order worth hundreds of millions has basically entered their pockets.

Geng Bo stroked the titanium alloy keel that had cooled and exuded a cold breath, as if he had seen it standing in the universe.

"The flaw detection has been completed."

Lao Huang then said, "No damage was found inside."

"The deformation didn't have much consequence."

"Of course, this may also be because it only underwent one transformation."

"If it deforms a few more times, there may be some internal damage."

"Do we need another high-temperature memory test?"

Geng Bo waved his right hand, "No need, it's enough to have a single two-way memory effect."

Although I don’t know where the other party is going to use this very strange thing.

But Lao Huang was still very smart and didn't ask too many questions.

Sometimes knowing too much is not a good thing.

Although he also has curiosity, his curiosity is still focused on technology itself.

I don't really care where it is used.

No matter what the other party says, he is still a member of the national scientific research system.

Anyway, it can't be used in a bad way.

"Then let's start the subsequent manufacturing work directly?"

Lao Huang kept rubbing his hands excitedly.

"We still have 11 more manufacturing tasks ahead, so let's get ready to officially start construction."

Geng Bo moved his hand away from the silver-white titanium alloy keel, shook hands with Lao Huang and said.

In fact, the entire starport only needs about ten titanium alloy keels.

The extra two are there as backup parts.

Prevent the keel from being damaged due to various unexpected situations.

After all, it is difficult to ensure that rocket launches are foolproof and that no accidents will occur.

Once an accident occurs, it is basically certain that the keel mounted on it is damaged.

In fact, major aerospace engineering projects will have backups.

The satellite project will have backup satellites and backup rockets.

The manned space project will have backup manned spacecraft.

Therefore, titanium alloy keel launch projects must also have backup titanium alloy keels.

"Then can our contract be signed today?" Old Huang smiled so hard that his face wrinkled.

Geng Bo also laughed and said, "Of course, we can complete the signing of the contract now."

The contract was signed in two copies and was quickly completed.

Party A did not write the name of the Rocket Research Institute, but only a string of numerical codes - 729!

Lao Huang didn't dwell on this matter.

Although I don’t know what this digital code specifically represents.

However, during this time, he also learned a little bit of the inside story through his connections.

This is a huge project with an initial investment of tens of billions of yuan.

If you follow him, you won't have a problem living a good year, not to mention eating fat and having a fat belly.

"I will help you make these golden hoops." Lao Huang said with a laugh after signing the contract. (End of chapter)