industrial overlord

Chapter 403 Blade Material
Lin Zhenhua didn't know anything about the cold arrows that were coming at him from the dark. In the few months after the battle oath meeting, he spent most of his time at the Hanhua Technical Intelligence Research Institute at the foot of Xiangshan Mountain, and gathered here Thousands of technicians are discussing one technical problem after another.

After consultations with technical authorities from various enterprises, the big ethylene research project team screened out a total of hundreds of technical problems that need to be solved.These technical issues were handed over to different research groups. The members of these research groups came from hundreds of enterprises in petrochemical equipment, metallurgy, machinery, electronics and other fields across the country, as well as major universities and research institutes. There are old engineers and graduate students who are still childish.In order to integrate the research results with the manufacturing process more quickly, the research team also absorbed a large number of excellent technicians.

Although the franchise companies more or less brought their own ideas when negotiating, and were concerned about gains and losses, they also showed the qualities that a large state-owned enterprise should have after they finally signed a contract to enter the alliance.The technicians involved in the technical research can be said to have unique skills, and they are also orderly in their work.Many research groups are composed of technical personnel from multiple companies and institutions, but everyone can often adapt quickly to form a well-coordinated team.

As the leading unit, Hanhua Heavy Industries has dispatched the most technicians.A few years ago, Lin Zhenhua had already started the research on large ethylene. In the past few years, Hanhua has formed a lot of research results.Today, various research groups are conducting follow-up research on the basis of Hanhua Heavy Industry's technology accumulation, and the progress is very rapid.

A large amount of technical materials from the Soviet Union also played an important role. In the eyes of all technicians, those tons of materials are simply an inexhaustible mine.Many technical problems that have plagued them for many years can find detailed answers in this pile of old papers.After seeing these materials, the leaders of various enterprises were convinced, and felt that Hanhua Heavy Industry still had its strength as the "leader of the Five Sacred Mountains".

A large number of experiments have also been carried out simultaneously.He Haifeng personally negotiated with the Petroleum Corporation and Jiangsu Provincial Economic Commission, and prepaid 2 million yuan of research funds to the project team through bank loans to support various technical experiments.It should be known that many experiments in large ethylene technology research are very costly. For example, to fit the fracture toughness curve of a material, it may be necessary to test hundreds of specimens, and the cost of each specimen is as high as Thousands of dollars, after doing a set of experiments casually like this, tens of 10 yuan will disappear.

Lin Zhenhua is very busy every day. His main responsibility is to participate in the discussions of various groups, understand the difficulties faced by each group, and then coordinate resources to solve these difficulties.In this regard, Xiang Zhe couldn't help him, because Xiang Zhe was a liberal arts student, and he could barely understand general production issues, but he didn't know anything about such cutting-edge technology research issues.But Lin Zhenhua is different. He had a very deep professional background in his previous life. Now that he participates in this kind of technical research, although he can't understand everything like experts, he can still understand what others say.

"The choice of low-pressure blade material is the biggest difficulty we face." This is in the office of the industrial steam turbine research group, material expert An Zixuan is introducing the progress of the project to Lin Zhenhua, "The low-pressure blade is used in the wet steam area of ​​the steam turbine, It needs better corrosion ability. In addition, it also needs to have a proper tensile yield strength to withstand stable centrifugal stress and bending stress. Traditionally, the material of this type of blade is 12% Cr stainless steel, but Zhang Gong proposed that At present, the vibration damping performance of this kind of steel in China has not reached the level they hoped for.”

"Mr. Zhang has a problem for Professor An again? What is the situation of the vibration damping performance you proposed?" Lin Zhenhua laughed and asked the engine expert Zhang Yihua who was sitting beside him.

Zhang Yihua was originally engaged in aviation engines, and now under the lure of Lin Zhenhua, he has turned all his energy to industrial steam turbines.However, according to him, aero engines and industrial steam turbines have something in common, and some of the gas turbines, which are close relatives of steam turbines, are transformed from aero engines.Our country has also engaged in research on aero-engine transformation of marine gas turbines, and Zhang Yihua himself has personally participated in it.

Hearing Lin Zhenhua's question, Zhang Yihua replied: "The type of steam turbine we are currently designing includes 20-stage blades. The blades are large in size and are prone to resonance when rotating at high speed. Blade vibration will accelerate the fatigue of materials and cause material fatigue. Fracture. We have checked hundreds of cases of steam turbine blade fracture at home and abroad, and found that more than 80% of them are related to the resonance of the blade. Therefore, in order to improve the service life of the steam turbine, we must find a material with better vibration damping performance. "

"12% Cr stainless steel is recognized as a material with good vibration damping performance, but in the eyes of Zhang Gong, it still can't meet the requirements." An Zixuan said helplessly.

Zhang Yihua insisted: "Recognition is recognition, and facts are facts. We have tested in the laboratory, and the 12% Cr stainless steel produced in our country does not meet our requirements. If we use existing steel to make blades, we estimate that , the service life of our steam turbine can only reach about one-third of that of ALK."

"This is absolutely unacceptable." Lin Zhenhua said, "We are not engaged in large ethylene for the sake of looking good, but to catch up with the world's advanced level. Since we want to do it, we must do it better than ALK."

An Zixuan said: "We also think the same way, so we are currently actively researching this issue, we must find out the reason for the insufficient vibration damping performance of the material."

"This should be related to the trace element formula of the steel." Lin Zhenhua asked.He knew that the type of a steel only reflects its main components. In the actual smelting process, in order to achieve a certain performance, people often need to add some traces of other elements in the steelmaking furnace.The ratio of these trace elements is the secret of every steelmaking enterprise. Sometimes people say that the products of some steel factories are good, while the products of other steel factories are poor. In fact, the difference is often the control of these trace elements. .

An Zixuan said: "That's true. We went to the steel factory to find out that there is nothing wrong with our smelting technology. The main reason should be in the aspect of trace elements. Therefore, we have already started to study the problem of formula. By the way, in this regard , Kobayashi-san played a big role."

Speaking of this, An Zixuan turned his head and said to Lin Fanghua who was sitting next to him: "Xiao Lin, tell your brother about the situation you are currently studying."

At this time, Lin Fanghua has become An Zixuan's doctoral student as Lin Zhenhua wished.An Zixuan knew that she was Lin Zhenhua's younger sister, so he naturally took extra care of her.But Lin Fanghua did not embarrass her brother. She took several other doctoral and master students to undertake a lot of research work.

"With regard to the formula of trace elements in 12% Cr stainless steel, our current thinking is to consult foreign materials first, and then conduct experiments after forming a systematic thinking. The main data we consulted are the Soviet Union data of the Hanhua Technical Situation Research Institute. The Soviet Union has rich experience in manufacturing industrial steam turbines. The world’s largest single-shaft steam turbine with a capacity of 1200 MW was put into operation in the Soviet Union in 1982, with a pressure of 24 MPa and a steam temperature of 540 degrees Celsius.” Lin Fanghua said eloquently to his brother talk.

Lin Zhenhua asked: "To what extent have you checked the information so far?"

Lin Fanghua said: "We have been researching for more than two months, and we have read thousands of experimental records, and we already have some preliminary ideas. However, it is estimated that it will take at least half a year to finally form a clear idea."

Lin Zhenhua took a deep breath as if he had a toothache, and said, "Xiaofang, isn't your progress a little too slow? It will take half a year just to check the information, and it will not take a year until the materials are tested? Zhang Gong and the others are waiting for your materials to make steam turbines."

Lin Fanghua said angrily: "Boss Lin, do you have a little conscience? We have read thousands of experimental materials in two months, and some of those materials are still in Russian. I have to start learning Russian now."

An Zixuan smiled and relieved Lin Fanghua, "Manager Lin, I can't blame Xiao Lin for this. The work of sorting out materials is indeed very boring and heavy. As far as I know, Xiao Lin hasn't had a Sunday off for several weeks."

Lin Zhenhua said with a smile: "This girl, she needs to be tired. The work is so intense, I think she seems to be a little fatter."

Lin Fanghua said: "You don't know, the busier I get, the fatter I get. I'm so busy that I don't even have time to lose weight."

"However, half a year is indeed too long." Lin Zhenhua sighed.

Zhang Yihua said: "There is no way to do this. Scientific research has its own laws. We are lucky to have the data of these Soviets. Without these data, I am afraid that it will be difficult for us to solve it in two or three years. What about this question. Manager Lin, you don’t need to worry, before the materials come out, we can do some other design first, so it won’t take too much time.”

"That's the only way to go." Lin Zhenhua said, "That's the hard work for everyone."

Just at this point, the office door was suddenly pushed open, and Bi Min rushed in with a newspaper.Seeing the room full of people, she froze for a moment, but stopped talking.

"What's the matter, Bi Min, what's the matter?" Lin Zhenhua noticed the complicated expression on Bi Min's face and asked quickly.

Bi Min said: "Manager Lin, Assistant Xiang called you from Xunyang just now."

"Did he say something?" Lin Zhenhua asked.

Bi Min handed over the newspaper in his hand, and said in a low voice: "He told me to go to the reference room to find this newspaper, and said to give it to you right away."

(End of this chapter)