Text 1016 blood casts hammer 70,000 (one)

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(27/100 for ERS)

Regarding how Zheng Hao fooled Jiang Wen in the car, Liu Yijiu didn't bother to pay attention. ⊥

Chu Guorong and Cheng Xiaoci are both technicians who are not good at words, and after sharing a car with Liu Yijiu, they are still a little unaccustomed, they are just simple technicians, after the original project was launched, they even went to the central authorities in person, and the edges and corners have long been smoothed.

"Mr. Chu, Mr. Cheng, which of you can help introduce the situation of the big press? Although I knew some from the information at the beginning, and then listened to the report when the project was progressing, I think you know the most about the specific situation......" Liu Yijiu also felt depressed and took the initiative to speak.

As soon as the two heard this, they immediately became lively, and the atmosphere in the car began to liven up.

"Director Liu, our big press is still the same plan that was designed in the sixties, but after a lot of modifications, and then after many arguments, it finally began to be put into production...... "Cheng Xiaoci is less than forty years old, and he can sit in the position of vice president of the project, and he can already see that he is amazing.

Introducing the situation of the large press to Liu Yijiu, he did not directly introduce the performance parameters, but talked about the whole project.

For such an introduction, Liu Yijiu naturally listened very patiently.

"The entire large press has a total height of about 38 meters, 15 meters underground, and 23 meters above ground, which is equivalent to the height of a 12-story building...... With a total weight of about 21,000 tons and 68 parts weighing more than 75 tons, the press is the largest in the world in terms of size and maximum weight. It can be continuously forged in any tonnage within 700mn pressure. The maximum die forging pressing force can reach 800mn, and the scheme is modified according to the requirements put forward by the Ninth Academy. High synchronization accuracy, strong anti-eccentric load ability, and can realize stepless voltage regulation and speed regulation ......"

"Not 65,000 tons? How did it become 70,000 tons? The maximum die forging pressure can reach 80,000 tons? Liu Yijiu was a little surprised.

On a large press of this level, every ton of pressure raised is an extremely strict challenge for the technology of the entire equipment.

Before this, China did not even have a large press of 40,000 tons.

Directly launched 65,000 tons, the technical difficulty can be imagined. Now I still have 70,000 tons of it.

This kind of pressure is even worse than creating an air giant like the An-225.

"The project plan is indeed 65,000 tons, but due to the sufficient funds of the Ninth Hospital. And we have cooperated with many domestic universities and heavy industry enterprises to discuss and research, and found that the manufacturing cost of 65,000 tons of large presses is only 30 million yuan and 70,000 tons, so we finally chose the 70,000 tons plan......" said this, Cheng Xiaoci stopped. looked at Liu Yijiu a little nervously.

Spend an extra 30 million for the other party. And it's just a soft sister coin instead of a beautiful knife, Liu Yijiu doesn't think it's the same thing at all.

Other units are short of money, and Yun Shi was dismounted because of 30 million dollars in funds at the beginning, but now that the Ninth Academy has tens of billions of dollars in funds, it naturally will not take this as a thing.

"Now that we have a 70,000-ton press, our forging capacity can also rank second in the world, even if our new large transport machine project, there is no problem!" Liu Yijiu nodded approvingly.

If it's possible. He wished he could have a 100,000-ton die forging machine!

"yes, that's what we thought when we first discussed. After all, the greater the force that can be provided during forging, the better the strength of some demanding heavy parts......" Seeing that Liu Yijiu was not the slightest dissatisfied, both of them breathed a sigh of relief.

After all, this project was taken over by the Ninth Academy.

It is equivalent to entrusting them with design and manufacturing.

"How's the production speed?" Liu Yijiu continued to ask.

Now there is only one forging equipment that can be used in China for their current use.

In order to improve the internal structural strength of heavy parts, make the grain structure more dense, so as to have better material strength and mechanical properties, higher metal fatigue strength, and longer service life, it is necessary to hammer the parts into place with a larger force.

When there is no such a huge forging press, the main girder of the Yun 10 and J-11, the main girder production of J-10, and the production of the landing gear are all used to use the 30,000-ton die forging machine in the Southwest Aluminum Processing Plant for repeated forging, although it can achieve the effect several times, but the internal structure of the material is not a whole, and there will be subtle cracks in many places.

It has a very big impact on the service life.

Yun Ten is the most obvious example.

After only a thousand hours of flying, the metal fatigue strength of the main girder began to decline.

"The main girder of the production aircraft, theoretically speaking, can produce one in an hour and a half; The landing gear is about seven minutes a ......" Chu Guorong said to Liu Yijiu with a smile, they are still very satisfied with this production speed, "In the production process, we have carried out joint research and technical research with Huaqing University, Capital University, the first-level department, the first heavy and many other units, especially the Ninth Academy provides some key control technologies, and many key processes in the entire production process are automated ......"

Seeing Liu Yijiu frowning, Chu Guorong couldn't help but stop.

Could it be that Director Liu is not satisfied with this speed?

You know, when forging, you have to lift the forging hammer to a height of more than ten meters, and the entire moving parts weigh thousands of tons!

The largest beam alone weighs more than 500 tons!

Immediately explained again, "This time is mainly due to the process of clamping, which takes a lot of time......

"It's a good time!" Liu Yijiu sighed.

In this era, it is already quite good to be able to reach this level!

He remembered that the time for forging the landing gear for the 80,000-ton press was only 210 seconds!

Seeing Liu Yijiu sighing, the two of them didn't know what to do, this big press has already mobilized the country's top technical force, and this is the highest level that can be achieved at present.

The whole car fell into oppressive silence again.

Fortunately, it is not too far from the train station to the second factory.

After less than two minutes of silence, the convoy stopped at the gate of Nie's factory.

Someone outside opened the car door, Liu Yijiu's foot had just stepped out, not yet on the ground, waiting for the workers on both sides of the factory gate, under the command of a thin old man, the noisy gong, the earth-shattering drum sounded at the same time, the workers also began to dance the red flower in their hands, shouting a warm welcome to Liu Yijiu and others......

For such a battle, Liu Yijiu was very uninterested.

If you have time, you might as well produce more!

"Director Liu doesn't like such a lively scene......" Zheng Hao saw that Liu Yijiu did not accept the flowers offered by the female workers, and said to Jiang Wen beside him with a wry smile, Jiang Wen hurriedly went to arrange, and the noisy sound stopped abruptly.

The workers were somewhat stunned and were ordered by the management to leave the factory gate.

They couldn't understand that they had to be counted by the leaders when they weren't lively before, and their voices weren't loud enough, so why did they change their tune today?

In particular, the leaders they welcome seem too young?

Many managers of the double are also very embarrassed, especially when faced with inquiries from their subordinates.

Liu Yijiu didn't care about the embarrassed face of the leader of the second group, and said to Jiang Wen, "Director Jiang, our time is limited, let's go directly to see the big press." If we don't see this thing, we don't know the bottom of our project......"

For Liu Yijiu, Jiang Wen and others still know a lot about Zheng Hao.

The embarrassment that 701 once encountered spread all over China.

Even the "People's Daily" reported several times that the canteen of the 701 Institute was sealed up for reference only......

"Director Liu, this new repair plant next to here is our big press forging workshop!" As soon as I entered the factory gate with a strong Soviet style in Nie, I didn't walk long inside, and I saw a new factory building on the left side of the road that was much taller than other workshops and had increased a lot in width.

This factory is like standing out from the crowd, and the light steel structure of the factory is indeed very conspicuous in the middle of the Soviet-style brick and wood structure factory, and it is far away from other factories.

"We completed the civil works first, and built the plant while assembling the big press, so we haven't had time to sort out the ...... outside" Seeing Liu Yijiu, there was still a lot of soil outside the factory that had not been cleaned up, Jiang Wen hurriedly explained.

The technicians who were waiting at the gate of this workshop to welcome the leaders were all brought back by the people arranged by Jiang Wen at the beginning.

"Didn't you say debugging? Why is the door of the workshop closed? Liu Yijiu looked over and saw that the door of the workshop was closed.

"This side is the material channel, there is only one equipment in the entire factory, next to it is the heating workshop, and the personnel channel is on the other side of the workshop......" Jiang Wen felt that Liu Yijiu was too difficult to serve.

Liu Yijiu looked around and didn't say anything, but walked towards the personnel passage next to the workshop under the leadership of Jiang Wen and others.

Inside the workshop, there is a large area with rooms built on it, which are the workers' rest room and offices.

On the other side is the technical room.

"Are there soundproofing measures in these offices and technical rooms? The tens of thousands of tons of equipment are in motion, and the movement is not small! Liu Yijiu reminded Jiang Wen.

After all, these leaders don't have much time to come here, and workers and technicians have to live in such an environment every day.

Just issuing sound-isolating earplugs doesn't make much use.

"The walls and roofs of these offices are covered with several soundproofing materials, and next to the offices, five trenches are dug that are half a meter wide and three meters deep, and they are usually filled with water to dampen the vibrations......"

A few steps ahead, what catches your eye is a shocking giant machine - this is China's 70,000-ton large forging press!

When Liu Yijiu saw this thing, the whole person felt breathless!