Chapter 174 Quality Issues of MOSS Tanks (Updated)

"There is no problem with the overall design. The next step is construction. As long as the quality is guaranteed during construction, it will be fine." Qin Tao said, "Especially the welding accuracy. There must be no problems. This project will be in charge of Engineer Cong."

Cong Ju nodded, "Well, I will work hard and cooperate with the foreign supervisors."

This liquefied gas ship has another unique feature. It is the first ship of Mingzhou Shipyard to undertake foreign shipowners. There are many exemption clauses in the contract, so foreign shipowners are definitely not at ease. They must send the most capable supervisor. As for whether it will be Carrasco, it is not certain.

The ship was handed over to Cong Ju, and Cong Ju took on this responsibility. The design has been completed, and the next main task is welding. Speaking of this, she is very good at it.

"Engineer Cong will be busy again in the future, but the factory will take good care of the personal families of employees. Engineer Zhou will not have too important tasks. He can go to get off work on time and have enough time to pick up and drop off his children." Qin Tao said.

Cong Ju nodded: "Thank you."

"What a pity, this kind of ship is too wasteful." Yang Dawei has already sighed on the side.

Although the design is good, look at the five big balls, how much space is wasted? It would be great if these could continue to load cargo.

"Yes, so this kind of ship is just a transition, we still have to study the membrane ship made of Invar steel in the future." Qin Tao said: "Of course, this will have to wait until our shipyard develops to a certain extent."

After hanging up the phone, Qin Tao's expression was a little serious.

"Dinglingling." At this time, the phone in the conference room rang. Qin Tao picked up the phone and looked at the four-digit internal number inside, which was a little strange.

"Yes, it should be a humidity problem." Cong Ju also confirmed Qin Tao's analysis.

"Cong Gong, is there a problem with this machine made by the Japanese?" An old master said: "The Japanese have bad intentions, maybe there is something strange in the machine."

"Air humidity?"

As the person in charge of this project, Cong Ju was very anxious.

Qin Tao frowned, looked at the weld, then looked at the surrounding environment, and then said: "It should be the influence of air humidity."

Amid the discussion, Cong Ju looked at the weld carefully. The weld that should have been smooth actually had many pores on it. How could this happen?

Welding is a complicated process. The liquid inside the molten pool cools down to form a solid weld. Generally speaking, there are few bubbles inside the molten metal, and such dense pores will not be formed.

The first batch requires at least five aluminum alloy tanks. If the delivery time is delayed due to the unqualified welding of these aluminum alloy tanks, they need to compensate. What's more serious is that their reputation has been damaged, and they will never be able to take on the contract of natural gas ships again.

Although she is thin, she runs very fast. She was the first to return to the welding workshop. Looking at the pores on the weld, her face was extremely ugly.

"That's right. Humidity below 60% is the best environment for aluminum alloy welding. If the humidity exceeds 70%, supersaturated hydrogen will appear in the molten pool during the welding process. At the moment of condensation of the weld, a large number of bubbles will form and rise in the liquid-solid two-phase molten pool. They will turn from bubbles into pores and emerge from the surface. Therefore, we can see pores on the surface of the weld now, but there should be bubbles inside."

"The welding workshop reported that the weld quality of the third aluminum alloy tank being welded does not meet the standards."

"That's right. If it doesn't work, we will weld manually. This automatic equipment is unreliable."

Now, it's just a beginning. They are the first to try it in China, and they will become the leaders in this industry in the future!

Moreover, in the future, the country will also issue guidance opinions on national ships, national products and national transportation. The natural gas needed by the motherland can only be transported by liquefied gas ships produced by the motherland itself. At that time, the demand for liquefied gas ships will be even greater.

"Qin Gong, what happened?" Cong Ju asked nervously.

"Hey, what's going on? What? Let's go and have a look right away."

"I never thought that aluminum alloy welding is related to the weather. It's going to be the rainy season next. Then, we can't weld a qualified aluminum alloy tank in our workshop?" The tone of the old worker was full of disappointment.

The first aluminum alloy tank was their trial product, which was a complete success. The second aluminum alloy tank was welded by the masters without Cong Ju's presence, and there was no problem. Now the third one is being welded. Who would have thought that the quality is not up to standard!

Therefore, in the later stage, it is necessary to overcome the difficulties of the natural gas ship made of advanced Invar steel. Moreover, all the technology is our own. If we import technology from abroad at a high price and have to pay expensive patent fees, it will not be worth it.

"What?" Cong Ju ran out immediately.

Qin Tao and Yang Dawei also arrived.

At the beginning, Cong Ju was misled by everyone. Everyone was complaining about the automatic welding equipment, so she suspected the problem of the welding equipment. After Qin Tao's analysis, she realized that she had heard about it during the training before, but she didn't encounter it much later, so she forgot it.

"What should we do next? We can't just rely on God to do the work, right?"

"Of course not." Qin Tao said: "We will immediately purchase a large number of industrial air-conditioning equipment to make the entire welding workshop constant temperature and humidity."

"What?"

Everyone was stunned again.

In this era, it is good to have an electric fan in hot weather, and air conditioning is impossible. At this time, Qin Tao actually said that he would purchase air conditioners here. Look at the space inside, how many air conditioners are enough?

Moreover, how much electricity does that thing consume?

In this way, how much will their production costs increase?

"Mr. Qin, is it necessary to do this?" Even Cong Ju had some doubts.

The workers of this era can endure hardships. In the hot summer, wearing thick work clothes, climbing to dangerous places to weld, after work, they are all wet, and no one complains. Who would ask for the installation of air conditioning equipment?

"Yes, it is necessary." Qin Tao said: "Now, we only produce aluminum alloy MOSS tanks. When we use Invar steel in the future, we need to produce them in a constant temperature and humidity workshop. If we don't take good care of them, the expensive products may become waste. These are all necessary. Otherwise, why would such ships be sold at a high price?"

Don't be afraid of increasing costs, we sell them at a high price!

What should be invested must be invested. The previous practice of doing it if there are conditions, and creating conditions if there are no conditions, is outdated. They must have a qualified working environment.

"Okay, then we will stop working first, and before the equipment is installed in place, we will conduct a strict sealing operation on the workshop." Cong Ju said.

...

Minzhou Shipbuilding Industry Affiliated Primary School.

The bell rang for the end of get out of class, and the campus immediately became lively. Primary school students lined up to go outside, and there was already a full circle of parents outside.

"Dad, Dad!" Lili shouted loudly, and then ran to Zhou Yongfei.

"Lili, come, sit in the back." Zhou Yongfei carried Lili to the back seat of the 28 bicycle, pushed her forward, and then went to the kindergarten across the wall to pick up Niu Niu.

"Dad, I got the first place in the class again in this exam, 100 points." Lili excitedly reported the good news to Zhou Yongfei.

"Well, not bad, Lili, I'll reward you with braised pork when you go home."

"Long live Dad."

When he pushed the bicycle over, Niu Niu was already lying on the fence of the kindergarten, waiting.

"Dad, Dad!"

Niu Niu was very happy, shouting while running towards Zhou Yongfei, and then Zhou Yongfei carried her to the beam with one hand, one in front and one behind, and the two daughters went home happily.

"Dad, is mom back?"

"Yes, she is back." Zhou Yongfei said, "Your mom just came back from the United States, but she will be busy with shipbuilding in the future, so she will probably go out early and come back late."

"Humph, mom is always like this, dad, why don't you stay busy in the factory and let mom stay at home with us?"

"Yes, and Uncle Qin, we haven't seen him for a long time."

Zhou Yongfei's face was a little embarrassed.

A family must have a sacrifice, right? Cong Ju has always been a person who is willing to work hard and has good skills. Therefore, when she was in Huating Shipyard, she was a technical backbone. When she came here, she had to take the lead.

Zhou Yongfei came to the shipyard and knew that the factory took care of him. There were not many jobs arranged for him, and the salary was very generous, so he was relatively satisfied.

However, it was still a little embarrassing for a man to do housework and let the woman in his family take the lead.

"Yes, I miss Uncle Qin too. Dad, your braised pork is not as delicious as Uncle Qin's." Lili said from behind.

Zhou Yongfei felt even more sad.

"Niuniu, Lili, do you see the building over there? It will be built in two months. We can move in this winter. Do you want to live in the new house?" Zhou Yongfei changed the subject.

"Dad, will Uncle Qin live with us? It would be nice if he lives next door."

Why can't this topic be changed? I am your biological father!

Zhou Yongfei was riding a bicycle, feeling very unhappy. When he arrived at the gate of the shipyard, he saw a familiar figure.

"Lao Zhou, Lao Zhou!"

Zhou Yongfei was immediately happy: "Si Hai? What brought you here?"

"I went home to visit my relatives and happened to pass by here. I heard that you work here, so I came to see you." Li Si Hai was holding a large net bag in his hand, which contained a lot of good things.

"Oh, let's go to my house." Zhou Yongfei greeted, then looked at the shipyard's gatehouse and said hello.

The family compound is outside the shipyard, but Zhou Yongfei and his friends are temporarily living in the dormitory, which is inside the shipyard.

Li Sihai walked and looked around: "This Mingzhou Shipyard is really amazing. Now it can even build natural gas ships. This is unique in our country!"

"Uncle, my mother builds natural gas ships." Lili began to show off: "My mother is the best!"

"That's right, Cong Gong used to be the top leader in Huating Shipyard. Our Zhongjiang Shipyard doesn't have this strength. Speaking of it, it's really unlucky. When they said they wanted to help build it, I was so excited that I followed them to Zhongjiang Shipyard. If I had known earlier, it would have been better to stay in Huating Shipyard!"

Li Sihai began to beat his chest and stamp his feet, regretting it.

"Old Zhou, your side is not doing well?"

"Yes, the missile boat business is dead, and the missile destroyer business is not coming. I'm afraid the factory will fail!"

Zhou Yongfei frowned: "Si Hai, as long as we have the ability, why worry about not having a job? Mingzhou Shipyard is short of manpower. If you have an idea, I will give you a call to the factory and let you come here to work. The salary here is not low."

"How can I feel embarrassed?" Li Si Hai was a little embarrassed.

"It's okay. When I first arrived at Huating Shipyard, we were apprentices in the same group. We have known each other for many years. I can still help you with this. Lili, Niuniu, go home and do your homework first. I will take uncle to see the factory leaders."

In the shipyard office, Qin Baoshan looked at the people brought by Zhou Yongfei happily: "Our Mingzhou Shipyard is growing and developing, and we are in urgent need of various excellent talents. Since Comrade Li Sihai is a skilled electrician, then stay and work. Although there is no formal establishment now, the salary and benefits are the same."

"Thank you, Director Qin." Li Sihai was very moved.

The next day.

"I have worked in Zhongjiang Shipyard. I am most familiar with the circuits of this missile boat." Li Sihai came to Dock No. 1 and worked very hard.

"Really, you connected the circuits of our missile launch tubes well." Military representative Zhao Ling looked at the work results of the newly joined worker Li Sihai and was very satisfied.

"This circuit used to have problems. After being at sea for a long time, it is easy to rust. So, we used a heat sleeve, which is much better than wrapping with tape."

"Hey, there is a new worker?" After Qin Tao came back, he did routine inspections every day. The first place he went was the missile boat station. When he saw Li Sihai, a new face, he was immediately curious.

"He is from Zhongjiang Shipyard. He has worked there before and is very skilled. We are short of manpower for the installation of this batch of missile boats, so it is just right that a capable person has come." Zhao Ling said.

Qin Tao nodded: "Well, good, come on, then, Representative Zhao, come over here."

Zhao Ling left with a natural expression and followed Qin Tao to the operating room next to him. There was no one around. Zhao Ling thought Qin Tao was going to do something intimate. Anyway, they were engaged, so there was nothing to be shy about.

"Xiaoling, help me check the background of this Li Sihai."

"Hmm?" Zhao Ling was a little surprised: "Are you worried?"

Li Sihai worked quickly and skillfully. It was obvious that he had installed missile boat equipment before, so she was very relieved.

"I am worried about him even though he is from Zhongjiang Shipyard." Qin Tao said: "We have to ask the Marines to pay attention to Li Sihai's actions."

The other party's background will not be fake, and this can be found out after checking, so the other party should be from Zhongjiang Shipyard, but it is precisely because of this that Qin Tao has to be vigilant.

Zhao Ling nodded: "Okay, I will arrange it."

The business is over, do you want to get intimate now?

Qin Tao was beginning to be distracted when his mobile phone rang.

"Hello? Purchase S-300? Why am I going again?"