How could this happen?

Wu Mingze couldn't figure it out a little, and he was stunned for a moment.

I thought about the situation when the welding was just now, and thought carefully without missing a single detail.

The scene was quiet.

Very quiet.

I guess no one thought why the situation was the same. I originally had great hope for Wu Mingze and the others. After all, they had relevant experience and foundation and had experienced the problem of unqualified welding.

After thinking about it, Wu Mingze asked, "Mr. Sun, can you show me the film I just shot?"

"Of course there is no problem."

Sun Baoguo waved his hand, and then someone sent the film he just took over. Not only the welding film, but also the detailed inspection report.

Taking these materials carefully and taking into account the situation he had just soldered, Wu Mingze thought for a while and proposed to weld another test piece and try again.

Sun Baoguo did not hesitate and agreed to this request at once. Of course, he had to try it again, and one welding would not explain the problem at all.

He was going to give Wu Mingze and the others a few more chances and let him weld a few more times. Maybe, after experimenting a few more times, what if the welding was successful?

But, ideals are full and reality is skinny.

Wu Mingze welded several test pieces in a row, without exception, all of them were unqualified. Inspection found that there were still micro-cracks in the weld.

At this moment, Wu Mingze felt helpless and said with apologies: "Mr. Sun, I can't figure out what's going on for the time being. I may have to think about it carefully and summarize it."

Sun Baoguo was very polite and arranged a special lounge. Wu Mingze and the other three were resting there. They could discuss and summarize the test pieces welded just now.

Zhang Yi from Dongjiang Shipyard continued to weld the test piece, and there were technicians or welding experts next to him to provide guidance.

Yang Fan came to Dongjiang Shipyard again. He was worried about welding and knew that the welding experience of Donghai Shipyard may not be suitable for Dongjiang Shipyard.

Sun Baoguo politely invited Wu Mingze and others to come over, but it is estimated that the problem will not be solved.

The most important thing is that after some hard work, Yang Fan finally remembered something.

In history, the welding of the 054 ship encountered great difficulties. At that time, it seemed that the problem was finally solved perfectly after adjusting the welding parameters and repeated tests.

As for the specific welding parameters, Yang Fan certainly couldn't remember it, as it required repeated tests from Dongjiang Shipyard.

When he walked into the welding workshop, Yang Fan felt that the atmosphere was a little dull, and it could even be described as pessimistic, as if the air was filled with depression.

There are still many people next to the welding station, some are experienced welding workers, some are technicians, and some are senior welding experts at Dongjiang Shipyard.

They were not relaxed one by one, and they looked very serious. Of course, Sun Baoguo was also at the welding site.

Seeing Yang Fan coming, Sun Baoguo came up and shook hands with Yang Fan.

"Chief Commander Yang, you are here again."

"Come here to see, how is the situation now?" Yang Fan asked with concern.

Although we know that the situation may not be ideal, we still have to ask first and understand the situation before we talk about it.

Sun Baoguo shook his head with a wry smile and said in a low tone: "The situation is still not ideal. We have welded dozens of test pieces, but all of them are unqualified without exception."

"Wu Mingze from Shanghai Shipyard also came over to try a few test pieces, and the same result was the same, and there were also welding cracks."

Yang Fan also learned about the welding situation in detail, especially asked what kind of welding process, what kind of welding methods were adopted, especially what adjustments were made in the welding parameters, etc.

After understanding these things clearly, Yang Fan made a suggestion: "Mr. Sun, I have thought about the welding issue for a long time. I personally think the key lies in the adjustment of welding parameters. You can make efforts in this regard."

Focus on adjusting welding parameters.

Sun Baoguo thought about something.

Yang Fan gently patted his shoulder and said more formally: "Listen to me, focus on adjusting welding parameters. After repeated trials and trials, I think it will definitely succeed."

Seeing what Yang Fan said so formally, Sun Baoguo finally nodded solemnly and was determined to adopt this suggestion.

He asked for an invitation: "We are about to hold a welding technology discussion meeting to analyze the reasons for the failure of welding and come up with countermeasures. Mr. Yang, you are also here, how about attending our meeting?"

Anyway, we have already come here, so we can attend the meeting at Dongjiang Shipyard and listen to what they say.

So Yangfan happily agreed.

In a conference room at Dongjiang Shipyard, a technical analysis meeting was held again to discuss the reasons why the welding specimens have been unqualified.

After listening to the introduction of these technicians, Yangfan has a better understanding of the welding situation in the past two days and has also felt the tremendous pressure in their hearts.

The welding has been unqualified, and even ordinary technicians feel the pressure, which can be fully felt from their tone and expression.

Yang Fan kept listening and seemed very quiet. He occasionally took notes and recorded some things on his notebook.

I originally planned to attend the meeting and learn about the situation, but I was not prepared to speak.

When the meeting was about to end, Sun Baoguo said enthusiastically: "Chief Yang, will you say a few words to everyone? I will also give us some suggestions."

Yang Fan stood up, looked around everyone, and then said loudly: "Everyone has worked hard and has done a lot of work. I have listened carefully to your speeches. I think the next focus will be on adjusting welding parameters. Every time the welding parameters are adjusted, one or two test pieces are welded for verification until the welding is qualified."

Seeing that Yangfan proposed to focus on adjusting welding parameters again, Sun Baoguo also paid full attention. He asked: "We will do it according to Chief Engineer Yang's suggestion, focus on adjusting welding parameters and conduct repeated experiments."

Things were basically settled.

After the meeting, the welding technicians at Dongjiang Shipyard conducted a test plan, mainly adjusting the welding parameters and conducting a series of welding verifications.

We all know that welding quality is related to temperature, humidity, welding current, etc.

In the welding workshop, Zhang Yi personally carried out the welding. The technicians measured the temperature and humidity on the site, then set the welding current, and stipulated a series of parameters such as welding speed, indicating that the welding could be started.

Soon, the first specimen was welded, and the welding parameters were adjusted according to the welding results, and then the second specimen was welded.

Keep going like this.

Yang Fan's suggestions were almost completely adopted, focusing on adjusting welding parameters.

Yang Fan and Sun Baoguo stayed at the welding site for at least an hour and watched the welding of several test pieces in person.

Unfortunately, there has not been a condition of welding qualified yet. Everyone knows that this cannot be successfully welded in just one or two strokes, and it may require a lot of welding verification.

Understand this point, many consecutive welding test pieces failed, and everyone was not discouraged. They still adjusted the welding parameters according to the welding situation, and then conducted welding verification.

After staying at the welding site for more than an hour, Sun Baoguo invited: "Chief Yang, it may take two or three days to get a result. We are not in a hurry to go, go to my office and sit and have a tea."

Yang Fan looked at the time and said, "It's a waste of time to go to drink tea now. Why not accompany me to take a walk and see the platform you prepared to build the 054 ship."

"Yes, then we'll go there now."

The two left the welding workshop together, and soon arrived at the ship platform prepared by Dongjiang Shipyard to build the 054 ship.

Obviously, according to Yang Fan's suggestion, this place has undergone some technical transformation and is competent for the construction of the 054 ship.

But Yang Fan felt that the only thing was good.

Noting Yang Fan's expression, Sun Baoguo said with a little concern: "Chief Yang, our ship should be fine."

After pondering for a while, Yang Fan said slowly: "How to say, there is no problem in building the 054 ship, but strictly speaking, there are some problems."

What!

Sun Baoguo's face changed slightly!

I thought to myself that the welding problem has not been solved yet, so don’t have any more problems in building a ship platform.

…………

Today's third update, and the third update is given, thank you everyone!
Chapter completed!