"But now we don't have a solution, we can't delay the whole project, right?" Ma Sixing said helplessly.

"There is nothing to do, the original plan for this bridge was to be completed in May 2020, and there are still eleven months to go, so we don't need to take any risks." Chen Wenfeng still rejected the thermal expansion and cold shrinkage sleeve scheme.

"Alright then!"

"Old Ma, your plan is still good, you continue to improve it, as a backup just in case."

"I'll continue to follow up on this plan."

The two of them hurriedly ate breakfast, and both continued to study how to solve the problem of sealing the joint.

Even if welding is not possible, after all, after welding, it is possible to form metal pores, which have no great impact on items or facilities with low sealing requirements.

However, a highly vacuum vacuum pipe is not good at all, and even a small porosity can cause catastrophic consequences.

In addition, the bonding between the welded metal and graphene composite FRP material is not good, so the welding scheme is out.

Next, a researcher proposed a concrete wrapping method, using foam cement to wrap this pipe joint.

"The strength of foam cement is enough, but you won't forget the congenital defects of foam cement, right?" Ma Sixing obviously did not approve of this plan.

What is the congenital defect of foam cement, that is, the sealing of foam cement is not good, and when it is used as a wall, it is necessary to apply special anti-penetration materials to avoid water leakage.

What's more, it is a vacuum pipeline with such a high vacuum degree requirement, as for the use of ordinary concrete, it is better to use Ma Sixing's thermal expansion and cold shrinkage sleeve scheme.

"Sorry, didn't think of that." The researcher said awkwardly.

Chen Wenfeng waved his hand: "No need to apologize, everyone is here to solve the problem, and if you have any ideas, you can say anything, and the stones of other mountains can attack jade." ”

All the researchers were racking their brains and meditating, some were looking through the materials in the online library, some were rummaging through the internal journal paper database, and some were simply closing their eyes and meditating.

As a student at Galaxy Academy last year, Jiang Guoyu has been assigned to the Vacuum Piping Research Institute as an intern for more than two months.

Although they are all doing chores, Galaxy Technology does not exploit these interns, and the salary they should have is still readily available.

According to the performance during the internship, after graduation, Galaxy Technology will arrange for these students, whether to stay or leave, it depends on their performance.

If you perform well during the internship, it is not impossible to become a regular employee early.

Therefore, Jiang Guoyu cherishes the opportunity to intern at the Vacuum Piping Research Institute.

He was also thinking about how to solve the sealing problem of the joint of the vacuum pipeline, and like some people, he chose to turn to the information and papers.

Suddenly, he saw a paper "AB Gel Laser Welding Technology" that was only uploaded this morning, Jiang Guoyu didn't care about it at first, after all, in the internal journal of Galaxy Technology, this kind of paper is not a thousand, but hundreds of them.

But soon he was not calm, because he saw the author of the paper.

Huang Haojie's three words came into view, and he was like a thunderous existence in Galaxy Technology

The bark of the tree, the name of the person, in the papers of Galaxy Technology, but where the name of this big guy is hung, none of them are simple.

Jiang Guoyu's eyes lit up, and with the mood of pilgrimage, he hurriedly studied it carefully as a treasure.

The paper says that two gels, mixed in a certain proportion, can quickly form a high-strength adhesive under specific infrared irradiation.

The more I look at Jiang Guoyu's eyes, the brighter it is, this hybrid gel not only has a very large range of application, but also has high strength, high binding and high sealing.

This is simply tailor-made for vacuum pipes.

After all, it is the welding technology of the spaceship, if the strength, bonding, and sealing are not good, then the spacecraft will still be welded to repair a fart.

"Chen, I have a discovery." Jiang Guoyu hurriedly stood up and said.

Although he didn't have any hope, Chen Wenfeng still said with a smile in line with the idea of not dampening the enthusiasm of young people: "Oh? Tell me about it, little Jiang. ”

"Chen, I found a paper by the chairman in the paper library, which has a gel laser welding technology." Jiang Guoyu hurriedly struck while the iron was hot and said.

As soon as he heard that it was Huang Haojie's paper, Chen Wenfeng suddenly didn't dare to despise it: "What's the name of the paper?"

"It's called AB gel laser welding technology." Jiang Guoyu hurriedly replied.

Chen Wenfeng and other researchers opened the holographic computer and searched for it.

Soon, everyone was carefully studying the paper "AB Gel Laser Welding Technology".

After Chen Wenfeng finished reading the paper, he asked Ma Sixing on the side, "Old Ma, what do you think?"

"After all, it is Mr. Huang's technology, there can be no fraud, and it is worth a try." Ma Sixing raised his glasses and replied.

Chen Wenfeng immediately decided: "Okay, let's divide into two ways, I'll go to the Materials Research Institute to let them make these two gels, and Lao Ma, you go to the Laser Research Institute to borrow a set of infrared lasers." ”

"No problem, I'll go right away."

The two of them acted quickly, and because there was a complete gel preparation method in the paper, the Institute of Materials quickly drew a gourd and prepared two gels.

When Chen Wenfeng returned to the Vacuum Pipeline Research Institute with two barrels of gel, Ma Sixing had already borrowed an infrared laser.

"Experiment now?" Ma Sixing asked.

"The materials and equipment are complete, let's experiment now." Chen Wenfeng couldn't wait to rub his hands and said.

They quickly emptied a backup lab and aligned the two small sections of vacuum tubing.

"Gel A 3.47 kg, gel B 4.84 kg."

From the two buckets of gel, remove the appropriate weight of gel and mix together for shaking.

Chen Wenfeng looked at the mixed gel in the blender, which had turned from white to blue, and hurriedly said:

"It's already discolored, so stop stirring."

A circle of tape has been applied to the inside of the pipe joint of the experiment, and Jiang Guoyu is wearing a protective suit and applying the mixed gel to the pipe joint.

"Chen, it's already painted."

"Prepare for infrared laser irradiation." Chen Wenfeng commanded.

"Okay."

Drip! A corrective red laser is applied to the mixed gel at the junction of the pipe, and the position and frequency of the irradiation are adjusted.

An invisible infrared laser instantly irradiated the mixed gel at the joint of the pipe, and suddenly the blue mixed gel began to change, and the opaque blue gradually turned into a translucent light blue.

Half an hour or so.

Looking at the mixed gel of the entire junction, which turned translucent light blue, Chen Wenfeng immediately said: "Stop laser irradiation." ”

After the laser stopped, Ma Sixing asked, "Do you want to test the tightness now?"

Chen Wenfeng shook his head: "Wait another ten minutes, although the paper says that the welding will be completed if it becomes translucent and light blue, it is better to wait a little longer to be on the safe side." ”

Ten minutes later.

"Now let's start testing the pipe tightness."

A group of researchers began to test the tightness of the pipeline, and after a rigorous test, the tightness of the pipeline made Chen Wenfeng and others excited.

"Perfect."

"The two pipes are like one whole."

"Great."

"Now it's finally time to make a deal."