This conversation on the beach is just a retreat in nature. The next day, Liu Xianghai summoned several of his capable generals, including Russian experts such as Tuchinov and Bryss, and held another special meeting with Lin Zhenhua and Zhang Yihua to finalize the details of various aspects one by one. As a steam turbine expert, Zhang Yihua mainly listens to everyone's technical requirements. Lin Zhenhua, as the person in charge of the enterprise, discussed issues related to progress and budget with everyone.

After the meeting, Lin Zhenhua and Zhang Yihua did not stay any longer, and hurriedly said goodbye and left, and they had to rush back to Xunyang to implement the specific work. Bryce did not go with them, he will stay in Weihai for a few more days, and then someone from the navy will send him to Xunyang, according to Liu Xianghai's arrangement, Brise will work in Xunyang for a period of time, mainly for technical guidance.

On the plane from Jinan back to Nandu, Zhang Yihua flew happily, pulling Lin Zhenhua to talk long and short, and never left the bank. It can be seen that he is genuinely attracted to the study of gas turbines.

"Lao Zhang, why do I think you look confident? As far as I know, gas turbines are not easy to build, and there are few countries in the world that can build gas turbines, right? A lot of words "Lin Zhenhua couldn't help but pour cold water on Zhang Yihua, engaging in science is not good without enthusiasm, but there are problems with excessive enthusiasm."

Zhang Yihua said disapprehantly: "Of course I know that this thing is not easy to do, and if it is easy to do, I am not interested in it." It's because it's difficult, it's challenging. ”

"No, Lao Zhang, how old are you this year?" Lin Zhenhua asked with a smile, in fact, he knew Zhang Yihua's age, and this question was just to remind Zhang Yihua to pay attention to his age. Good guys, all of them are in their 50s, and they are still pursuing challenges and playing with the feeling of heartbeat.

"I was born in 1940 and am 53 years old this year." Zhang Yihua didn't understand what Lin Zhenhua meant, he replied seriously, "Alas, if you don't hurry up, you should retire in a blink of an eye." I'm trying to get this thing up and down before I retire, so that my life will be in vain. ”

"Lao Zhang, don't worry." Lin Zhenhua said, "As long as you still have the energy, even if you work until you are 70 or 80 years old, it doesn't matter." You haven't looked at He Lao, he is also in his 70s, aren't you still working? What I mean, let's do it at the nodes proposed by the military, and don't be too desperate. ”

Zhang Yihua said: "It's not a matter of life, Mr. Lin, don't you know, there are a lot of obstacles in front of us when it comes to gas turbines, and any obstacle may stop us for several years." Therefore, for the problems that can be solved, we must seize the time to solve them, and set aside time to deal with the obstacles that may arise. ”

Lin Zhenhua asked: "Lao Zhang, what do you think are our main obstacles?" ”

Zhang Yihua counted with his fingers: "The material of the blade, the processing and forming technology of the blade, the precision machining of the cylinder block and transmission parts, and the control system. The main obstacle is these four aspects. As for the other less serious obstacles, there are dozens of them, but with our efforts, they should not be difficult to overcome. ”

"We already have some accumulation of materials for blades, and when we were engaged in steam turbines, didn't we already have some materials? The two should be connected, right? A lot of words," Lin Zhenhua analyzed.

Zhang Yihua nodded and said: "The basic principles are the same, but there are some differences in the specific properties of the materials, which may need to be entrusted to Huaqing University to help." By the way, isn't your sister presiding over there? ”。

Lin Zhenhua smiled slightly and said, "It can't be said that Xiaofang is presiding over the work, Professor An Zixuan is still the main one there." However, Xiaofang's recent progress has also been very fast, and she has published several high-quality papers, and Professor An still trusts her. "Well, this little girl is a bit aggressive in her work, and I like her character." Zhang Yihua praised.

Lin Zhenhua smiled and said nothing, he knew that his sister did not have such a spirit of hard study when she was a child, if it wasn't for his careful counseling, Lin Fanghua might not be able to get into Huaqing. Over the years, Lin Fanghua has studied in the United States, and after coming back, she encountered the big ethylene research and Lin Zhenhua's suspension for review, all of which have made her personality change a little, and she has become stronger and more tenacious. To be honest, seeing this change in his sister, Lin Zhenhua is also very pleased.

"In terms of precision machining, the future will be handed over to the machine tool company to solve." Lin Zhenhua continued to analyze the difficulty of the project, "Lao Zhang, you form a document of the specific requirements for processing and submit it to Manager Cen and Director Ma, so that they can engage in research and development with questions. Our own machine tool company is an excellent opportunity to support our own projects. ”

"In terms of control system, let Mr. Wei Jingwen's electronics research institute take care of it first." Zhang Yihua is also coming up with an idea, "Lao Wei is very good at automatic control, which is worthy of being cultivated by our Beihang Airlines." ”

Zhang Yihua was born in aviation, and he has a bit of a friendship with Wei Jingwen, no wonder he will speak for him. However, the electronics research institute led by Wei Jingwen is indeed not ambiguous, with more than a dozen old engineers from various electronics institutes in charge, as well as dozens of young and middle-aged technicians who graduated from famous domestic schools or returned from abroad, and their strength is very strong. At present, the machine tool company is engaged in CNC machine tools, and the part of the control system depends on the electronic research institute.

"What are the specific requirements for blade forming? Is the blade intended to be powdered metallurgically forming, or die forging? Lin Zhenhua continued to ask, he didn't know much about steam turbine technology, but he roughly knew that these were two common blade forming processes. At present, both processes have their own difficulties for GCA and require a lot of effort to overcome.

Zhang Yihua said: "I discussed this issue with Bryce yesterday, and he is more inclined to engage in die forging, and I also have this view. However, Russia has a good foundation for die forging, and they have the world's largest 75,000-ton die forging machine, and the forging effect is very good. There is no die forging machine of this level in our country, and if the forging pressure is insufficient, it will be difficult to achieve the microstructure evolution effect we need, and the service life of the blade will be affected. ”

"Die forging machine ......" Lin Zhenhua muttered, "Lao Zhang, do you think we need at least a high pressure die forging machine to be enough?" ”

"At least...... 40,000 tons. Zhang Yihua hesitated and said, "The Russian side has 75,000 tons, and we should have at least 40,000 tons to get closer to them." From what I have seen in the literature, it is difficult to achieve precision machining of gas turbine blades with a pressure of less than 40,000 tons. ”

Lin Zhenhua said: "Why can't we make 80,000 tons? I think that if you want to do it, you can make it bigger, and you can upgrade it later. ”

"80,000 tons" Zhang Yihua's eyes lit up, "If you can make 80,000 tons, it would be great." Do you know that we used to build large aircraft, because of the lack of large die forging machines, the fuselage girder can only be manufactured by segmented forging, and the strength is far from meeting the requirements. If there is an 80,000-ton die forging machine, there is hope for a large aircraft to be re-launched. ”

Zhang Yihua is right, the level of large-scale die forging machines almost represents the level of the aviation industry. In later generations, when France launched the A380 large passenger aircraft, the most critical component of the landing gear could only be sent to Russia, and Russia was asked to use a 75,000-ton die forging machine to help roll it.

"Let's forget about the big plane first......" Lin Zhenhua waved his hand again and again, he was frightened by Zhang Yihua's ambition. The big plane is a gold-swallowing monster, and it is difficult to smash it into it without hundreds of billions of dollars. The five or six companies under Hanhua now have a total output value of four or five billion yuan a year, and it is still a long way to go to build a large aircraft. "Large-scale die forging is not only used for gas turbines, but also for chemical equipment and machine tools." The pressure-resistant parts on some equipment need to be forged and formed, and the lack of large-scale forging machines is too restrictive for us. Lin Zhenhua said.

Zhang Yihua said: "Mr. Lin, I also have to remind you that it is not so easy to build a large-scale forging machine, a die forging machine of more than 40,000 tons has high technical and financial requirements, so we have to consider it carefully." ”

Lin Zhenhua nodded and said, "Don't worry, Lao Zhang, I'm not an impulsive person." I have been thinking about the problem of large die forging machines for more than a day, and this problem will have to be solved sooner or later, otherwise our entire level of machinery manufacturing will not be able to improve. In addition to die forging, the open forging machine should also be considered, at least there should be an open forging machine of more than 10,000 tons to meet the demand. ”

"Mr. Lin is really a person who does a big business." Zhang Yihua sighed sincerely.

Lin Zhenhua said: "Lao Zhang, just wait and see." Now the time is not too ripe, wait for two or three years, the company's funds are a little more relaxed for further study, and begin to engage in large-scale forging machines, free forging and die forging to on. I estimate that by that time, the domestic manufacturing industry should also develop to a new level, and we will be able to recover the investment just by undertaking the forging business on two forging machines. ”

The two of them talked all the way, and before they knew it, the plane had landed at Nandu Airport. The two of them packed their luggage and got off the plane, Xu Zhong, the driver sent by the company to pick them up, was already standing at the port waiting for them, and when he saw the two of them coming out, Xu Zhong waved his hand.

"Mr. Lin, look, Xiao Xu is over there." Zhang Yihua pointed in the direction of Xu Zhong and said to Lin Zhenhua.

Lin Zhenhua didn't hear Zhang Yihua's words, and his attention was attracted by a few people next to him. The men, all wearing caps and toes, pulled their suitcases and spoke loudly as they walked out. The way they speak is very special, at the same time, several people are making noises at the same time, it seems that no one cares what others say, and they don't care if others are listening, they are just eager to say what they want to say.

The language of these people is a language that Lin Zhenhua does not understand, but this does not mean that Lin Zhenhua is not familiar with this language, at least, he heard a tone particle that appears very frequently from it: Smecta ......,