Chapter 161 We want to build a liquefied gas ship

 January 16, 1991, the first day of the twelfth lunar month.

The Mingzhou Shipyard was filled with joy. Everyone opened their eyes wide and looked at the huge floating dock that sailed from the sea into the estuary.

 “It’s so big!”

“Yes, with this thing, we can build big ships in the future!”

Qin Baoshan stood on the slipway, facing the cold wind, watching the Shenzhou floating dock slowly move back, and all the wrinkles on his face relaxed.

Finally, the floating dock docked at the pier. The people in the operation room slowly walked down the ramp of the floating dock, with Qin Tao walking at the front in high spirits.

I don’t know who applauded first, and then the applause in the entire shipyard was like thunder, resounding through the sky.

“Everyone, this is a new beginning for us at Mingzhou Shipbuilding Industry Group!” Qin Tao was also very excited at this time and gave an impromptu speech.

“At present, we already have a contract for the construction of missile boats and a contract for the construction of 10,000-ton cargo ships. In the future, we will build more and larger ships. A bright future is waving to us!”

 The crowd continued to applaud.

“This year’s year-end bonus is twice that of last year. Okay, everyone, let’s go to work!”

Everyone immediately dispersed and rushed to their jobs. The shipyard began to be busy with work again.

“Little bastard, it’s yours. In such a short period of time, you have brought back so much funds for us.” Qin Baoshan looked at his son and said with emotion.

 When the 20 million US dollars arrived, Qin Baoshan was really shocked. My son actually started to earn US dollars, still so much!

Qin Tao glanced at his father: "It's not the first day your son has been in the limelight. Besides, now the entire group is contracted by us, and we can use the extra money freely. However, you also know that your son You can make money and you can spend money.”

"Spend it all, it's your responsibility. You earned the money anyway." Qin Baoshan was not as dissatisfied as before. He supported his son 100%.

“Sister Cong Ju, come here!” Qin Tao said to her immediately when he saw Cong Ju turning around and leaving.

Cong Ju smiled brightly: "I know you picked him up, but I still have to go to work."

Cong Ju looked at the other people who came off the floating dock, including her husband.

“That’s not it. There are some good things in there. Let’s see if we can get it.” Qin Tao pointed to the big belly of the floating dock.

Cong Ju's face became serious, and she followed Qin Tao into the floating dock. When she saw the shiny thing, Cong Ju immediately recognized it: "MOSS spherical tank, it is made of aluminum -4.5% Made of magnesium alloy 5083, it is a common storage tank currently used in the construction of liquefied gas ships."

“Sister Cong Ju, can we make this kind of thing ourselves?” Qin Tao asked Cong Ju.

"We want to build a liquefied gas ship ourselves?" Cong Ju was a little surprised: "This type of ship cannot be built by ordinary shipyards. The main technology is mastered by some shipyards in island countries and Kimchi countries. There is currently only one shipbuilding company in our country. The factory is trying.”

"Yes, the demand for this kind of ship will be greater and greater in the future. If we can build this kind of ship, we will have a steady stream of orders." Qin Tao is full of expectations: "Moreover, the profit will be much higher than that of our exclusively manufactured missile boats. many."

Cong Ju nodded: "Yes, the prospect of this kind of ship is very promising, but there are also many problems. First of all, the spherical tank with this structure is welded by an automatic welding machine, and even cut with Also an automatic plasma cutting device.”

"That's right. I plan to use the 20 million US dollars I earned to purchase these automatic welding and cutting equipment. In the future, we will also use a large number of automatic welding equipment in shipbuilding. We will only use it in places that are out of reach of automatic welding machines. Manual welding can also greatly increase our shipbuilding speed."

 In the craftsmen of big countries, workers with first-class skills will be repeatedly introduced. In fact, in the shipbuilding industry, most of the work will be replaced by automatic equipment, and manual labor is mainly welding special corners.

Of course Qin Tao is aware of this situation. Therefore, if the shipyard wants to develop, it must purchase advanced automated welding and cutting equipment, which requires high investment.

“Secondly, spherical tanks with this structure have begun to be gradually eliminated in liquefied gas ships. The latest liquefied gas ships built abroad have begun to adopt the GTT membrane ship type, which is lined with Invar steel and wood on the outside. The tank is used as an insulating material. This kind of ship-shaped tank can be welded into any shape to maintain close contact with the hull to the maximum extent." Cong Ju said: "Currently, we do not have the welding technology of Yinwa steel, and we do not have this kind of technology in our country. Plant materials.”

Qin Tao nodded: "Yes, not only do we not have it in our country, but also many developed countries, including the arrogant island countries. The famous Kobe Steel does not have the ability to produce this kind of steel. In the world, only France can produce it."

 Kobe Steel, when Qin Tao said it, his tone was full of disdain. It is unique in the whole world and can only be made by the French, because this kind of thing was discovered by the French.

Generally speaking, ordinary objects are affected by the principle of thermal expansion and contraction. Only water expands when it is cooled when it turns into ice. That is because it changes from liquid to solid. No other object can avoid this basic law.

 Take the aluminum alloy can in front of you as an example. Every time the ambient temperature drops by 50 degrees Celsius, a one-meter-long aluminum plate will shorten by 2.5 mm, and an ordinary steel plate of the same length will also shorten by 1.8 mm.

 The solution is to reserve space for contraction, and then keep it at a low temperature to avoid internal fatigue of the metal caused by expansion and contraction.

So, are there any metals that do not expand with heat or contract with cold? have!

In 1896, when the Swiss-French physicist C.E. Guialm was conducting research, he discovered that a nickel-iron alloy composed of 36% nickel, 63.8% iron, and 0.2% carbon exhibited a peculiar phenomenon. Within the temperature range below 230 degrees Celsius), the size of this alloy material hardly changes with temperature changes!

The scientist who discovered this alloy named it Invar (meaning "unchanged"). This abnormal effect of Invar is also called the Invar effect.

No one knows why it doesn’t expand with heat and shrink with cold, not even C.E. Guilaume who discovered it. However, this did not prevent him from winning the Nobel Prize in Physics in 1920. At the same time, this unique metal also became an important part of the industrial field. Excellent materials inside.

The thickness of this product is only 0.7 mm, just like tinfoil; it is expensive, hundreds of yuan per kilogram; it is very delicate, and if you touch it with your hands, it will be corroded by sweat and rust. So after this thing is produced, it still has a film on the surface. When using it, you must wear special gloves when touching it.

Although there are various problems, it does not prevent Invar steel from becoming the best material for liquefied gas ships. Its thickness is very thin, so using it as the main wall in contact with liquefied gas will be very light and weigh far less. As for aluminum alloy tanks, for ship owners, the weight saved means reduced transportation costs.

 So, in the 21st century, the spherical tank type MOSS liquefied gas ships were eliminated, and almost all newly manufactured ships were of this membrane type.

As a time traveler, Qin Tao is of course very familiar with these. He looked at Cong Ju: "Now, we can only try to make this type of spherical tank first, and first take orders for a few liquefied gas ships to make a mark in this industry. If our reputation goes away, we will turn to membrane-type Invar steel ships in the future. We will also engage in research and development and produce this Invar steel ourselves in the future."

self-produce?

Hearing this, Cong Ju was shocked.

 In the world, only France can produce it. Germany, island countries, and the United States do not have the production technology for this kind of steel, but Qin Tao decided to develop it himself.

Furthermore, Cong Ju believed that there was nothing Qin Tao couldn’t do. Since he said he wanted to develop it, he would definitely be able to develop it!

Mingzhou Shipbuilding Industry Group is a subsidiary of Mingzhou Steel Plant. Qin Tao has already made plans. Although this steel plant started from recycled scrap steel, it must become a well-known high-tech steel company in the future!

"It is said that manufacturing Yinwa steel requires a lot of specialized equipment." Cong Ju continued to talk to Qin Tao after the shock: "It requires electric arc furnace smelting or vacuum induction melting, LF refining or vacuum oxygen decarburization, vacuum arc remelting or Electroslag remelting, then continuous casting, hot rolling, cold rolling and other complex processes. In each process, in addition to taking various means to ensure that the composition and performance are qualified, we must also overcome the low surface hardness of Invar steel and the Defects and other difficulties.”

“Sister Cong Ju, it seems that you are very familiar with these things. Do you want to take the lead and engage in research and development?” Qin Tao looked at Cong Ju.

Cong Ju quickly shook her head: "Forget it, I'm just talking. I haven't been busy with work recently, so I read some related books. However, I still have only a partial understanding. After all, your sister Cong Ju's academic qualifications are not enough."

“If your academic qualifications are not enough, you can improve. Sister Cong Ju, now I have called my brother-in-law here. Your family is reunited. From now on, you can take the university entrance examination, or we can send you out for further study in the name of our shipyard.”

Cong Ju smiled and said nothing. A warm current flowed through her heart. Qin Tao's words had completely moved her. She really wanted to continue learning and improve herself.

But let’s wait until we have mastered the welding of this large MOSS tank.

“Sister Cong Ju, the equipment will be in place soon, and we will also purchase the relevant aluminum materials. I will leave the imitation of this tank to you.” Qin Tao indeed issued this task.

 Cong Ju nodded: "No problem."

Qin Tao first assigned Cong Ju a task. After all, this was the most important thing. After chatting with Cong Ju, Qin Tao took her back to the office to hold a meeting.

The meeting was attended not only by people from the shipyard, but also by people from the Mingzhou Steel Plant and the Mingzhou Transportation Company.

This is also the first time Qin Tao has held a meeting of this level after taking over the position of top leader of Mingzhou Shipbuilding Industry Group.

 Those who attended the meeting were basically old acquaintances.

When Ma Laoliu and the others walked in, they were extremely excited. When they went to Mingzhou Transportation Company to take up their posts, they had already made up their minds. From now on, this life will belong to Qin Tao!

Zhang Jinxi, the director of the Mingzhou Steel Plant, was even more excited. He never dreamed that he, an outsider, would be promoted to the position of director. On the surface, he moved from Huating to Mingzhou. , but now, his choice is not wrong!

Deputy factory director Tang has retired. Next to Zhang Jinxi is Liu Mingxi, the former chief of the finance department. Liu Mingxi, the current deputy director, is also very emotional in his heart. Thank you Mr. Qin!

 Only no one came from the water pump factory. After all, it was too far away.

"Everyone, after the establishment of our group, we should have held a meeting long ago. However, because we have been busy recently, until today, it is the first meeting." Qin Tao said: "Everyone is very busy, so I won't No more words to say, our future meetings will be short and concise. Now, let each factory report on its work. Director Qin, you come first."

Qin Baoshan's heart was full of mixed emotions. His son had already jumped on his head. Now, even though he was still used to barking like a little brat, he still had to report to the little brat honestly.

"Our shipyard is currently building the Navy's missile boat project. Since our shipyard is large enough, we use the method of building five missile boats at the same time. The ship-breaking business is temporarily suspended, and the ship-breaking workers will go to Chongming Island. After refitting the oil tanker, I have not yet arranged any work after returning. Anyway, it is already the twelfth lunar month. I can wait until after the Chinese New Year to go to work. They have been away for several months and it is time to reunite with their families. Also, we have signed an agreement with the domestic transportation company. We have a construction contract intention for a 10,000-ton cargo ship, and this ship will become an important task for us next year.”

Qin Tao nodded: "The overall work of the shipyard is good. Now, I will make a few new requirements."

Qin Baoshan took out a small notebook and recorded it carefully.

"First of all, first, we need to set up a special design unit, which will be temporarily called the Mingzhou Shipbuilding Industry Group Design Office." Qin Tao said: "Old...Old factory director, next, you need to go to various universities to lobby and ask them to Many college students are assigned to us and receive favorable treatment!"

"What? College student? Xiao..." Qin Baoshan was a little dumbfounded.

The conversation between an old man and a young man was very interesting. Although they didn't finish their words, everyone knew what they were going to say, so they all suppressed their laughter.

Qin Baoshan frowned, do you think it is that easy? Do you know how much effort I put into getting you here? You are my son, and after you came, you kept asking to leave. If I went to find someone else, they wouldn't even look at me. Even if I bribed the leaders and issued registration passes to those college students, they would probably tear them up.

“I want to major in shipbuilding, electromechanical and computer science, and a famous university is the best.” Qin Tao continued to tell his father.

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 (End of this chapter)