A few days later, the 022 missile boat model design team was ready to leave Jiangnan Changxing Shipbuilding and go to the Gui Aluminum Factory in the southwest of the country to conduct research.
At the invitation of Yang Xiaoyi, this time Feng Haibo temporarily sent Shen Huan to Yang Xiaoyi to go to Guilu with the group, of course, Shen Huan also went to Changxing in Jiangnan to conduct investigation and research this time, so as to undertake the construction task of the Type 022 missile boat in the future.
Knowing that Shen Huan was leaving, Lin Miaoyu was also reluctant, but she knew that this model was very important to the navy, Jiangnan Changxing Shipbuilding, and Shen Huan, because this type of missile boat was proposed by him.
Fortunately, both of them have mobile phones, but if they get to the expensive aluminum in the mountains, they may not have a signal.
Lin Miaoyu is also very busy now, and the Jiangnan Changxing Shipbuilding Group Technology Center is now going all out to engage in a number of technological innovation work, especially the pulsating production line of ships, which was also proposed by Shen Huan, and Lin Miaoyu also participated in the development work.
Fortunately, Shen Huan went this time, and it only took about ten days, mainly because of the long delay on the road, and in the late nineties, from Zhonghai to the mountains where Guilu is located, it took two days to take a one-way train.
Along the way, Yang Xiaoyi, the chief engineer of the model, also found an opportunity to discuss the technical issues of this type of missile boat with Shen Huan, of course, Shen Huan also told Yang Xiaoyi what he knew without reservation, of course, he hoped that this model would be more advanced than the 022 missile boat he participated in the construction of in his previous life, all of which was in the hands of the chief engineer of the model.
The day after departure, the train entered the southwest, but there was still a day to go.
In the afternoon of this day, Yang Xiaoyi pulled Shen Huan to chat again, of course, there were other people in the group next to him.
Including Qin Dong, a materials expert, and Zhao Shiguang, an engineer of Guilu.
Today, Yang Xiaoyi and Shen Huan talked about the problem about the aluminum alloy welding process.
Yang Xiaoyi is still a little worried, because she knows that this is the first time in China to design and build an aluminum alloy structure of the wave-piercing catamaran missile boat, although most of the domestic shipyards have experience in the construction of aluminum alloy ships, even catamaran structure passenger ships.
But after all, those are civilian ships, and the requirements for military ships are still much higher, especially in terms of structural strength, so this puts forward higher requirements for welding.
Yang Xiaoyi looked at the mountains and greenery passing by the window, turned his head and said with a smile: "This is all in Xiangxi, and it is about to arrive in Guizhou Province." ” Zhao Shiguang, the engineer of Guilu, said with a smile: "Yes, we can arrive at Guilu at night."
This time, the leaders of our company also attach great importance to it, Mr.
Yang, you can put forward any requirements, and we will also make every effort to do a good job in the design and development of new missile boats. ” Yang Xiaoyi smiled and said: "Your Guilu is also an old factory, decades of history, I believe you have no problem, this is also my first time here, I am looking forward to it!"
” In Shen Huan's previous life, he also came to Guilu, and at that time it was also the first 022 missile boat built by Jiangnan Changxing Shipbuilding, with the port number 2208, and he also participated in the research of the construction process at that time, so he also came to Guilu.
It's just that at this time, it has advanced by several years, and Shen Huan doesn't know if Guilu has the ability to develop a special aluminum alloy material for a new type of missile boat.
Of course, Shen Huan also knows that the foundation of Guilu is still very thick, and it was also a military enterprise that belonged to the third-line construction back then.
Founded in 1958 and renamed as No. 302 Factory in 1965, Guilu is one of the key projects in the first five-year plan to be built by Mao Xiong.
At this time, Qin Dong suddenly said: "I remember that the 5000 series aluminum alloy plates produced by Guilu in the past have a yield strength of only about 120 megapascals, right?"
If it is used to build a wave-piercing catamaran missile boat, is it a low point?
” Zhao Shiguang was blindsided all of a sudden, and he hesitated for a moment and said: "Qin Gong, you are right, but we are now developing a stronger model, and I believe it won't be long." ” Qin Dong said with a smile: "And if I am not mistaken, the thickness of the marine aluminum alloy plates you produce is not less than five millimeters, this time our design index, the thickness is three millimeters, I don't know what plan you have to meet the requirements of the design index?"
” Zhao Shiguang said with a wry smile: "Our smelting technology is indeed still a little behind the advanced level of foreign countries, so in terms of the strength and thickness of the plate, we are indeed very clear, and our factory is also investing vigorously to reach the international advanced level." ” Indeed, marine aluminum alloy has higher performance requirements than aviation aluminum.
Because marine aluminum alloy should not only take into account the structural strength, but also take into account the corrosion resistance, in addition to the parts soaked in the seawater, as well as the various structures of the hull must consider the anti-corrosion performance, because the salt spray in the sea is very large, pervasive, even the carrier-based aircraft such as air vehicles must consider anti-corrosion, not to mention the ship.
Generally speaking, the standard value of mechanical properties of 5,000 series aluminum alloy for marine use has different requirements for the yield strength with different thickness, diameter and state, for example, the minimum yield strength of the 5083 alloy plate used for the hull is 130 megapascals, and the state of the extruded profile is 110 megapascals.
The yield strength mentioned by Qin Dong actually refers to the minimum yield strength requirement of the profile state.
The products of precious aluminum are indeed a little worse, but in the domestic aluminum factories, precious aluminum is already the best.
Qin Dong laughed and said, "How can we be sure that you can achieve it?"
” Yang Xiaoyi saw what she wanted in this atmosphere, she hurriedly said: "Lao Qin, can you not mention this, let's go to Guilu and talk about this after understanding the situation!"
” Although Qin Dong is a little angry, in fact, he is really thinking about the design and development of a new missile boat, and time waits for no one.
After the last deflated, now that Qin Dong has also learned to be obedient, he immediately stopped talking.
At more than twelve o'clock in the evening, Yang Xiaoyi and Shen Huan and a group of more than a dozen people finally arrived at the main station of Guizhou Province, and after getting off the train, Guilu also did a very good job, and also sent a minibus to take Yang Xiaoyi and Shen Huan to Guilu's hotel.
Because it was too late, everyone went back to their rooms after arriving at the hotel, washed up and went to sleep.
In fact, Shen Huan is also a little worried, the problem mentioned by Qin Dong during the day, because the 022 missile boat is now a few years ahead of schedule, so the preparation in terms of aluminum alloy materials is not so sufficient.