I! Pretending to Be Reborn, Director of Doomsday Hoax

"All employees of the Capital Iron and Steel Group, dedicated to Director Xu Qiuxu of the Longguo Dangerous Information Bureau!"

Wo Chengwen said: "We can't take credit for the extremely cold rails! Whether it's the original idea, the provision of the gating system, or the choice of the final casting process, Director Xu reminded us!"

"Even Director Xu provided the last extremely cold rail rolling process and production line!"

"In the final analysis, Director Xu contributed more than 60.00% of the credit for the extremely cold rail. He is the father of the extremely cold rail!"

He Yude and others nodded one after another.

"Without Director Xu, we would not have been able to create extremely cold steel rails."

"Director Xu is really a genius, what else can he not know!"

Wo Chengwen laughed and said, "Okay, next time I meet Director Xu, I will hand over this model to him in person. Express our respect!"

"Now, it's time for us to take the next step!"

"Start the laying of the extremely cold line, and share the worries of Director Xu!"

Everyone was excited and couldn't wait.

Many people present are not only rail and railway engineers, but also railway designers, and they are also top domestic experts in this area.

They are definitely indispensable for the laying of extremely cold lines.

A railway designer stood up and asked a question, "Our extremely cold steel rail is a new type of seamless line, and the rail must be welded at that time. How should we choose the welding method?" Welding method?

Wo Chengwen rubbed his chin, feeling troubled.

He Yude and others also struggled.

At present, there are three commonly used welding methods.

The first is flash contact welding. This welding method is mainly used in various rail welding factories, because the welding in the factory can ensure the welding quality of the rails.

In flash contact welding, a 100-meter-long rail is usually placed in a specific machine, and then heated according to the principle of the thermal effect of the current. When the rail is heated to a plastic state, it is then extruded at an extremely fast speed.

The advantage of welding by this method is that the strength of the rail is equivalent to that of the base metal, and the surface is smooth and easy to grind and shape.

The disadvantage is that this method has certain limitations and can only weld rails in the factory.

In other words, the shipping cost will increase a lot.

The second method is air pressure welding. This welding method mainly uses the heat generated by the reaction of acetylene gas and oxygen to weld the rails.

Like flash welding, the principle is that when the rails are heated to a plastic state, under the action of pre-applied pressure, the two strands of rails are squeezed together to weld the rails together.

This method is generally applicable to outdoor construction sites. Due to the interference of the external environment, the welding quality is far inferior to flash contact welding.

But the advantage is that it is convenient, can be carried out anytime and anywhere, and is suitable for outdoor operations.

The last method is also suitable for outdoor work, thermite welding.

The welding principle is to use the oxidation-reduction reaction of iron and aluminum. During the oxidation process, a large amount of heat will be released, and the generated molten iron will weld the two rails together.

Compared with flash contact welding, aluminothermic welding has faster welding speed and stable welding quality, but the investment in welding machine is large, and the required power supply is also large.

The one-time investment of gas pressure welding is small, no high-power power supply is required, the welding time is short, and the welding quality is good.

The disadvantage is that the treatment of the joint section is very strict during welding, and the rail needs to move longitudinally to a certain extent during welding.

Therefore, gas pressure welding is difficult for welding super-long rails, especially the online welding of seamless lines across sections cannot be carried out.

The welding method of thermite welding is relatively simple, the requirements for operators are relatively low, and the welding time is short. It can be welded when the rail is fixed, but the welding quality is not as good as contact welding and gas pressure welding.Wo Chengwen and others are considering which welding method to choose.

Suddenly, Wo Chengwen's face darkened, and he thought of a fatal question...

Chapter 92 Xu Qiu, who saved the Dragon Kingdom, is the treasure of the Dragon Kingdom!

The extremely cold rail technology is a national-level secret, and it was selected into the "Longguo Key Fields, Major Special Projects, and Frontier Technology Restrictions" immediately after it was developed

For monopoly industries such as lithography machines and high-end CNC machine tool manufacturing that engage in technical barriers, the consideration of political and military interests between countries is bound to be higher than the trade-off of economic benefits.The upper echelons of the country are naturally aware of this.

In the past, there were a total of four people who could be selected for this restricted list, the highest level restricted.

The first is the high-speed rail technology of Longguo.

In fact, the high-speed rail was not invented by the Dragon Country. A few decades ago, the Sakura Country and the Orthopedic Country were the absolute hegemons in this field.

Later, through the introduction, Longguo jumped to the first place in the world in terms of scale and iteration, and now it has formed a position close to a monopoly, even the old powerhouse orthopedics country is far behind.

Secondly, it is the high-speed maglev turnout of Longguo.

This limiting technology is also related to high-speed rail,

It was the advent of the high-speed maglev turnout that made Longguo's high-speed rail, which was already at the forefront of the world, break from 250 kilometers per hour to [-] kilometers per hour in one fell swoop!

Today, the speed of the high-speed rail in Longguo has formed a huge fault with other countries.

The Dragon Kingdom is the best in the world, and other countries are far behind.

There is another item, the Dragon Kingdom is ranked first in the world so far, and no one has surpassed it, which is quantum communication technology.

Even in the era of dungeon construction, researchers related to quantum technology are still working on research and development day and night.

In the future, quantum technology will play a huge role in promoting the launch of random keys through quantum uncertainty, which will be an important weapon to ensure national security.

The last technology restricted by the Dragon Kingdom is UHV technology, and this is the biggest reliance on the transmission of electricity from west to east.

Now, the fifth appeared.

Longguo extreme cold rail rolling process and production line technology.

The inventor is No. 1 Xu Qiu, followed by Wo Chengwen, He Yude and others.

Today, Longguo's extremely cold rail rolling process and production line technology have been included in the national restricted list. Therefore, Wo Chengwen has to consider one point, which is also a fatal problem.

In Longguo, only the Capital Iron and Steel Group has the technology, production line and qualifications for producing extremely cold steel rails.

For the welding of steel rails, to ensure the highest level of quality, the welding is usually completed in advance in the steel plant, and then transported to all parts of the country for welding.

Capital Iron and Steel Group has undertaken many orders from the High-speed Railway Bureau.

They generally make steel rails with the longest rolling length of 100 meters, and then weld five 100-meter-long steel rails into 500-meter seamless long rails in the welding workshop.

Then it is transported to the laying site, and after another on-site inspection, rust removal, welding, joint marking, welding rod shaping, heat treatment, fine grinding, etc., it is laid into a railway with a length of several kilometers or even hundreds of kilometers.

The Capital Iron and Steel Group can supply the extremely cold line in Tiandu and the surrounding provinces, but what about Canton in the south, or the frontier in the northwest?Longguo's extremely cold rail rolling process and production line technology are too important, so it will never authorize too many steel companies.

There may be one or two in the three northeastern provinces, and only one or two companies in the southeast, southwest, and central and northwest regions can obtain authority.

These enterprises must run at full capacity and turn on all refining, casting, and foundry furnaces in order to support the cost of the extremely cold line.

However, it is absolutely impossible to weld steel rails hundreds of meters or even kilometers long in the factory building, and then transport them to farther places.

Therefore, using the existing welding method, I am afraid it will not work...

"We also need a new method for the laying of extremely cold lines and the welding of steel rails."

Wo Chengwen thought for a long time, and ruled out all the commonly used welding methods. The current welding techniques at home and abroad may not be able to meet the requirements of extremely cold lines.

With a calm smile, He Yude said, "Let's think about it again, we can't bother Director Xu any more with such trivial matters."

"He has worked very hard in coordinating the construction of the future facilities of the entire Dragon Kingdom. The people below us should share his worries." Wo Chengwen bowed respectfully to He Yude, and said: "What He said is that such trivial matters, We are obliged to wait." After all, this group of old people who symbolize the top IQ in the fields of steel smelting, rail production, and railway system design in Longguo turned around and entered the research and development workshop again. The fiery molten steel is boiling. This country is still full of vigor and vitality. .

It was late at night, eleven o'clock.

There are a total of twelve railway design institutes across the country, and at the same time, they received red-headed documents from the Emergency Bureau.

At this moment, in the Longguo Comprehensive Design Institute and the First Railway Institute.

Located in the capital of Shaanxi Province, this design institute undertakes railway survey and design tasks from the entire northwest region.

Qinghai-Tibet Railway, Zhengxi Passenger Train, Xibao Passenger Train, Nanjiang Railway, which have been completed and put into operation,

As well as the Lanxin Second Line, Baolan Passenger Train, Xicheng Passenger Train, etc. under construction, they are all designed by Longguo Comprehensive Design Institute.

The No. [-] Railway Academy is very experienced in the survey and design of plateau alpine railways, long tunnels in mountainous areas, and railway survey and design in collapsible loess areas. It is second to none in the country! At this time, the office of the president of the No. [-] Railway Academy is still brightly lit!

Affected by the forest transplanting plan, the whole people are now excited,

Especially for some old people with strong patriotism, the quality of sleep is not very good, and when they get excited, they can't sleep even more.

The old dean, Qu Huamei, was sitting on a chair, recalling her difficult life, and crying secretly!

The 77-year-old has already reached the age of retirement, but her experience in railway design and survey is still unique in the country.This special talent, retired, is a loss to the country.

The old man Qu Huamei also knew this, and resolutely applied to the state:

Continue to serve as the dean of the First Academy of Railways, cultivate enough railway design talents for Longguo, and then consider the matter of enjoying his old age.

At this moment, the secretary rushed over from the door and knocked on Qu Huamei's door.

"Dean Qu, the Emergency Bureau... sent someone over!"

Qu Huamei was taken aback, and stood up excitedly.

Although she is very old, Qu Huamei still walks like flying, and her body is very strong.

She followed the secretary to the reception room, where she saw two soldiers standing upright.

"Comrade, comrade! I am Qu Huamei!" Qu Huamei was eager to see through, she was already ready to dedicate everything, even her life, to this great country.

The two uniformed soldiers suddenly turned around and solemnly said to Qu Huamei: "Comrade Qu Huamei, you and the first railway station where you are located have been confiscated by the state!" A document, handed over to Qu Huamei.

The latter looked solemn, took it, and opened it to check. It was a red-headed document.

"Appointment Decision on the Planning and Design of Extremely Cold Routes in Northwest China"

"Nuclear-powered Changlong is already under development. At present, Longguo urgently needs an extremely cold line that fits our country's national conditions and runs through the country, so as to connect all parts of Longguo and communicate with each other."

"Qu Huamei is the chief designer of the extreme cold route in Northwest China."

"The No. [-] Railway Institute, the first base for railway design and line laying in Northwest China!"

"I hope you will lead the First Railway Institute to complete the construction of the extremely cold line in the northwest region, and live up to the eager expectations of Director Xu, the Emergency Bureau and the people of the whole country!" With tears in her eyes, Qu Huamei carefully put this red-headed document into in the inner pocket of the garment.

She said solemnly: "Two comrades, please help the old woman convey her respect to Director Xu. The old woman will definitely live up to the entrustment of Director Xu and the country to build the Northwest and reach Dragon Kingdom!!"

At the same time, the other eleven Longguo Railway Design Institutes also received notifications one after another.

The Second Railway Institute of Sichuan Province is mainly responsible for the railways in Southwest and South China.

Sichuan Province, where the No. [-] Railway Institute is located, and Yu City next to it, have a lot of mountainous geology, so this design institute has made great achievements in the laying of lines with complex mountainous geology.