industrial overlord

Chapter 588
To understand Nuzama's surprise, we need to start with the technology of gas turbines.

Many people know the steam engine, which uses fuel to boil water to generate water vapor, and then uses the water vapor to push the piston to do work, converting heat energy into mechanical energy.The principle of the steam turbine is to turn the piston in the steam engine into a set of impellers. The high-temperature and high-pressure steam passes through the impellers to make the impellers rotate, which can also generate mechanical energy and drive the generator to generate electricity.

The biggest disadvantage of steam engines and steam turbines is that the process of heating water with fuel will cause a certain amount of energy loss, thereby reducing the thermal efficiency of the equipment.If the process of boiling water is omitted, and the impeller is directly driven by high-temperature and high-pressure gas, the thermal efficiency of the entire equipment can be effectively improved, thereby meeting the requirements of energy saving, economy, and environmental protection.This kind of equipment that uses high-temperature and high-pressure gas to drive the impeller is called a gas turbine.

Gas turbines have other advantages over steam turbines.One is that due to the omission of the steam cycle system, the volume of the entire device can become smaller, so that it can be installed on ships, aircraft and some other equipment as the host of the equipment.The other is that because there is no need to wait for the process of boiling water, gas turbines can start much faster than steam turbines, and are often used as emergency power.

The gas turbine also has its weakness, that is, the temperature of the gas is much higher than that of the steam, which imposes strict requirements on the material of the impeller.The temperature of water vapor is related to pressure. Under normal pressure, the temperature of water vapor is only 100 degrees. Even under the so-called "supercritical" conditions, water vapor is pressurized to 250 atmospheres, and the temperature is 600 degrees. Or so, this temperature is still far below the melting point of ordinary metal materials, so it is enough to use ordinary metals to make impellers.

The gas turbine is different, because it does not use water vapor as the conduction medium, but directly uses high-temperature gas to do work, so the gas temperature in the gas turbine often reaches more than 600 degrees.Scientists have found that the higher the gas temperature in the gas turbine, the higher the thermal efficiency of the equipment. Therefore, continuously increasing the gas temperature in the gas turbine becomes the key to improving the performance of the gas turbine.

Since the 20s, gas turbine technology has gone through three stages, which can also be called the three generations of gas turbine technology.The first generation of gas turbine technology is characterized by an initial gas temperature between 50 and 600 degrees, and a simple cycle thermal efficiency between 1000% and 10%.The second-generation gas turbine technology means that the initial gas temperature reaches between 30 and 1050 degrees, and the thermal efficiency of a simple cycle is between 1370% and 32%. Around 40, some manufacturers represented by General Motors proposed the third-generation gas turbine technology. The initial temperature of gas can reach between 2000 and 1400 degrees, and the thermal efficiency can be further increased to more than 1500%. What ALK recommended to Nuzama was the third-generation gas turbine technology developed by it. The initial temperature of the gas reached 40 degrees, which indeed represented the world's first-class level.

There are many technical difficulties in increasing the gas temperature of a gas turbine, the most important of which is the choice of blade material.The melting point of ordinary steel is about 1500 degrees. If ordinary steel is used to make the impellers of gas turbines, in the gas of 1450 degrees, these impellers will be as soft as cooked noodles and cannot work normally at all.Therefore, whether a gas turbine with a higher gas temperature can be manufactured depends largely on whether a high temperature resistant material can be manufactured.

The preparation of high-temperature materials requires another lengthy text to introduce, which involves powder metallurgy technology, high-pressure forging technology and so on.Modern industry can be described as interlocking, and any technological breakthrough needs the support of the entire industrial system.During the 20 years of China's reform and opening up, it has accumulated all kinds of technology and equipment through hard work, and now it finally has the confidence to compete with international counterparts.

Hanhua Heavy Industries has been engaged in gas turbines for eight years, led by Zhang Yihua, who was born in aero-engines.The original purpose of Hanhua in this project was to provide marine main engines for naval ships. For this reason, Liu Xianghai also specially introduced the famous gas turbine expert Bryce from Ukraine to provide technical guidance.

Lin Zhenhua has invested a huge amount of money in the gas turbine project, and the results achieved are also very gratifying.Three years ago, Zhang Yihua produced a 30-megawatt gas turbine for marine use, which was accepted by the Navy and has been applied to new domestically-made destroyers.Last year, a 60-megawatt marine gas turbine was also successfully tested, and it is currently preparing to be applied to the 5-ton conventional power aircraft carrier that Liu Xianghai and the others are building.

While developing marine gas turbines, the team led by Zhang Yihua has also developed various gas turbine products for ethylene compressors, central air conditioners and power plants, and their performance indicators have reached the world-class level.This time Lin Zhenhua came to the Frankfurt Equipment Exhibition, and the gas turbine was one of the products he planned to focus on promoting.Because of this confidence, he has no fear of Nuzama's arrogance.

"Mr. Nuzama, please don't look at Chinese products with old eyes. There is an old saying in China that the waves behind the Yangtze River drive the waves ahead. Western companies such as ALK were indeed ahead of us in technology, but more than ten years have passed, isn't it Can't we catch up?" Lin Zhenhua said to Nuzama.

Nuzama shook his head dubiously, and said: "I'm sorry, Mr. Lin, I'm not convinced by your point of view. What reason do you have for me to believe that your technology can surpass ALK? You know, while you are advancing , they are also advancing."

Lin Zhenhua said: "I just need to give you an example, and you will understand. At present, the world's largest 8-ton die forging machine is in China, and it is in our Hanhua Heavy Industry Group. As for ALK, it has a 3-ton die forging machine. There is no forging machine, and its powder metallurgy impeller has to be shipped to the United States for processing. In fact, we are moving forward, but they are still standing still.”

"This..." Nuzama was speechless.

Nuzama was able to become the deputy minister of the Ministry of Industry of Goma, so he naturally had a few brushes.He knows that powder metallurgy is the mainstream technology for manufacturing high-temperature materials today, and an important step in the powder metallurgy process is high-pressure die forging.The pressure of the die forging machine directly affects the level of powder metallurgy technology, and as Lin Zhenhua said, ALK does not have its own large die forging machine, and many of its powder metallurgy parts need to be shipped to the United States, using 4.5 tons in the United States. Die forging machine for forging.

Due to the lack of its own large-scale die forging machine, it is difficult for ALK to make technological breakthroughs in powder metallurgy. At present, the third-generation gas turbine manufactured by it uses the technology patent of General Motors of the United States, which is one of the technical bottlenecks of ALK. .

Hanhua Heavy Industry built the world's first 8-ton die forging machine a few years ago. With this die forging machine, Hanhua's technicians can conduct experiments on powder metallurgy materials as they like, which makes Hanhua's There has been a blowout breakthrough in the research of powder metallurgy materials.Lin Zhenhua's younger sister, Lin Fanghua, is now the director of the materials laboratory of the Mechanical Department of Huaqing University. She is a well-known material scientist in the world. Many of her experiments are done with the help of Hanhua's 8-ton die forging machine. A condition unavailable to her international counterparts.

The difference between scientific research and metaphysics is that scientific research actually has rules to follow.As long as you do all the things you should do, then you can get the corresponding results.The difference between a technologically strong country and a weak country lies in their different conditions.Previously, the experimental conditions of Chinese universities and scientific research institutes were far inferior to those of Western countries, and the scientific research funds were pitifully small. How could researchers produce any outstanding results just by writing and calculating in the library?
The situation today is very different. China's national strength has improved and its investment in scientific research has continued to increase.Many experimental conditions available abroad have also been equipped in China.Even some experimental conditions that cannot be met abroad can be provided domestically.Coupled with sufficient scientific research funding, various results will naturally spring up like mushrooms.

Seeing that Nuzama was silent, Lin Zhenhua didn't force him anymore.He took out a set of documents, handed them to Nuzama, and said, "Okay, here are the technical documents of the gas turbine provided by Hanhua Heavy Industry, and the information of the generator set of Xingbei Heavy Machinery. Mr. Nuzama can Take it for further research, if you intend to compare these materials with ALK’s products, we have no objection.”

"Thank you, Mr. Lin." Nuzama took the documents and exited the negotiation room together with Murabi with a face full of embarrassment.He could faintly feel that what Lin Zhenhua said to him should be true and reliable.If Hanhua's products can indeed reach the technical level of ALK, and the price is as cheap as ever, then he really has no reason to refuse.

Halloley stayed in the negotiating room. After Nuzama and his party left, he said apologetically to Lin Zhenhua: "Mr. Lin, I am very sorry. I really didn't expect it to be like this. After studying in university in France and returning to China to engage in politics, he has been funded by Western consortia all the time, so his idea..."

"Halore, no matter what the result is, I am very grateful to you." Lin Zhenhua interrupted Halore and said, "You are our good friend. As for Nuzama, everyone has his own aspirations, and we don't force him. What. I believe that we can convince him with excellent technology."

Halloley said: "Mr. Lin, I remember that when I first saw you at the Frankfurt exhibition, all you were able to exhibit were some outdated equipment. Of course, those equipment still played a role in the industrialization of our Wusang country. It is very helpful. Today, you have been able to exhibit so many world-class products, which is really not what it used to be. I fully believe that in a few years, you will become the most competitive at the Frankfurt exhibition Exhibitors, this day, will not be far away."

(End of this chapter)