The "Little Bee" aircraft is one of the products exhibited this time, because it is still in the field test flight stage, so it does not apply for flight shows at international air shows, and only does static displays.

Joining the Little Bee at the Frankfurt International Air Show is a 1:1 mock-up of the T-8 intermediate/advanced trainer aircraft, as well as the latest third-generation aluminum-lithium alloy and aerostructural titanium alloy.

Since the Americans successfully developed the first generation of aluminum-lithium alloy 2020 alloy in 1957, developed countries such as the Soviet Union, the United Kingdom, France, and Japan have developed second-generation aluminum-lithium alloys with different proportions on the basis of the first generation of aluminum-lithium alloys. The most famous of these are the Soviet 01420 alloy, the United States 2090, the British 8090 and 8091, the French 7209.

However, these aluminum-lithium alloys have serious anisotropy, low short transverse strength, low level of plastic toughness, and serious loss of toughness after heat exposure. As a result, researchers have developed a third-generation new aluminum-lithium alloy.

Compared with the second generation, the third generation of aluminum-lithium alloy reduces the Li content, increases the Cu content, and adds some new alloying elements, such as Zn. In terms of performance level, the new aluminum-lithium alloy has been greatly improved compared with the previous aluminum-lithium alloy, especially the performance of low anisotropy and high strength weldability is very good, and I believe that it will be a hit at this air show.

Titanium alloy is an alloy composed of other elements based on titanium. Titanium has two isomeric crystals: titanium is an allotrope with a melting point of 1668C and a close-packed hexagonal lattice structure below 882C, called A-titanium; Above 882C, it has a body-centered cubic fret structure, which is called β-titanium. Using the different characteristics of the above two structures of titanium, the titanium alloy materials with different structures are obtained by adding appropriate alloying elements to gradually change the phase transformation temperature and component content.

at room temperature. Titanium alloys have three matrix structures, A-alloy, (A+β) alloy and β alloy. China is represented by TA, TC, and TB, respectively. The most commonly used of the three titanium alloys are A titanium alloy and A+β titanium alloy; A titanium alloy has the best machinability, followed by A+β titanium alloy. β titanium alloy is the worst.

The titanium alloy developed by the materials laboratory of Ambrera is an ultra-high-strength titanium alloy, which has the advantages of high unit strength, good rigidity, light weight and good processability. In particular, its structural strength once exceeded that of many alloy steels, so it is suitable for making key aviation components such as engine casings, aircraft skeletons and girders, skins, fasteners and landing gear.

At the same time, it can also replace the cast steel gears of automobile engines and reduce the weight of automobile engines.

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The time has entered the month of April, and there are still a few days before the official air show, but some exhibiting aircraft have begun to move in, some international companies have entered the major hotels, and Ambrera is also making final preparations for the exhibition.

At this air show, Ambrera's booth location was not good. It's not bad. Some of the parts exhibited have been consigned, and more than 30 staff members such as Ling Shizhe, Zhou Yuanhang, Wang Yuanzhuo, and Christopher will accompany them.

The focus of this exhibition is not on the two aircraft for static display, but on the new materials and new parts launched by Ambrera.

In addition to new aluminum and titanium alloys, new self-locking nuts, ceramic bearings, and ceramic matrix composites are their focus.

Five-star resort hotel, a standard room per person, after staying, before the time difference, everyone began to arrange their booth, tomorrow the air show will officially begin.

Golden satin was laid out on the exhibition table, and parts were placed on it. It looks very beautiful and eye-catching.

Ambrera's booth was small, but it was very well arranged. Obviously, a lot of effort was spent, but unfortunately, there were relatively few exhibits, not to mention the entire aero engine, only some parts and two planes for static display, one of which was still a model, which seemed a little small compared to the huge pavilion of others.

Some large companies, very magnificent. The exhibition area is very large, and a large special exhibition hall is built that attracts attention. Walking into the hall is like stepping into a new world of aviation. All kinds of advanced things, such as aero engines, parts, etc., physical objects, graphics and texts, seem to be very high.

In the afternoon, Ling Shizhe, Zhou Yuanhang, Wang Yuanzhuo, Christopher and other senior leaders came to the air show to inspect.

After a look at the company's booth, seeing that everything was basically ready and in order, Ling Shizhe nodded with satisfaction, and what made Ling Shizhe even more satisfied was that Li Qinqin, the person in charge of the booth, was very careful, and also prepared a lot of things outside the exhibition, such as preparing coffee, drinking water, and preparing some seats for guests to rest, etc.

After nodding with satisfaction, Ling Shizhe became the shopkeeper again, and looked around, the air show center is very large, and he can only look at it in a casual manner, and see Boeing, McDonnell Douglas, Airbus, Grumman and other large international enterprises, all of which are extraordinarily large professional pavilions, so that Ling Shizhe, who participated in the air show for the first time, is very envious, and hopes that one day, he is also one of the giants.

After the acquisition of Bombardier, although Ling Shizhe recruited a lot of people, but the power and aircraft manufacturing companies all added up to less than 6,000, and a world aviation industry predator, hundreds of thousands of employees, output value of hundreds of billions, or even hundreds of billions, large factories as few as a dozen, including a huge scientific research institutions, a strong research and development team, Ling Shizhe's company can only be regarded as just starting, the development process is still very long.

Returning to his exhibition area and looking at the time, Ling Shizhe was ready to close the team, leaving two or three people here, and was about to leave, at this time, Ling Shizhe's eyes lit up, and he happened to see a familiar figure in the distance.

"Hey! James. Smith. MacDonald, are you okay? ”

James. Smith. MacDonald was walking with a few people, talking, walking, walking this way, apparently, talking to a few of his assistants, his deputies, about some work, talking and walking.

Hearing someone call him, he turned his head and saw Ling Shizhe, so he walked in front of Ling Shizhe. The two shook hands lightly and said, "Jester, I didn't expect you to also participate in the air show." Did you bring anything good? ”

"It's something new, but it's good or not. You'll know it when you see it. ”

Walking up to Ambrera's booth, James Brown. Smith. MacDonald's eyes lit up, and at a glance he saw two planes in the booth.

James. Smith. MacDonald surrounded the two planes, looked at them carefully, and found the differences between the two planes, "Ling, these two planes are very good, but what I'm more curious about is the materials used in these two planes." ”

"Come and have a look." Ling Shizhe smiled and pointed to the booth in front of him.

Come to the booth. Soon James. Smith. MacDonald was attracted by the parts on it, picked up a blade and looked at it carefully, and even held a magnifying glass, looking very focused, his two assistants walked over, James. Smith. McDonald didn't notice. It wasn't until he heard Ling Shizhe call him that he reacted.

"Smith, how are my blades?"

James. Smith. MacDonald looked at Ling Shizhe with complicated eyes and said, "Ling, this leaf is not simple, it is not simple. It's not milled, and it's not like the traces of manual grinding, but it's like grinding. However, can blade machining be grinding? ”

"We have invented a new grinding process." Ling Shizhe explained with a smile.

"A new grinding process?" James. Smith. MacDonald was a little surprised, although he was engaged in airplanes, he was no stranger to aero engines, and even knew the advantages of grinding technology for blade processing, that is, high machining accuracy, excellent surface roughness of parts, and some high-quality, high-demand spare parts. Many of them are grinding.

For example, the shaft parts of aero engines and the journal parts of the bearing are generally very high. Not only is the outer circle tolerance extremely small, but the cylindricity of the outer circle of the journal is generally only a few thousandths. And there are also very strict journal runout requirements.

Such a demanding part is generally grinding, and only grinding can achieve such precision requirements.

If you want to turn, mill, planing, grinding these kinds of machining methods, in terms of machining accuracy in an order, undoubtedly, grinding processing to rank first, in high-precision machining, grinding processing has irreplaceable advantages.

Of course, grinding also has its shortcomings, and its processing efficiency is often very low while high-precision machining.

James. Smith. McDonald is the president of McDonnell Douglas Aircraft, but he is also from a technical background, and he knows the advantages and disadvantages of grinding, so he said to Ling Shizhe: "The grinding of blades, if it can really be realized, must be top in terms of machining accuracy, but the processing efficiency is too low, and it will take a lot of time to process such a blade." ”

Ling Shizhe hurriedly shook his head and said, "No, no, Mr. Smith, I think you are mistaken, we have invented a five-link high-speed and high-precision grinding machine tool, and the processing speed will be very fast when used to grind blades." Much faster than traditional machine tools. ”

"Five-axis machine? You have made a five-axis machine tool, you must know that even the four-axis machining machine tool has just been developed, and you have already developed a five-axis machine tool? "James. Smith. MacDonald was completely stunned, he knew too well what the five-axis machine meant, James. Smith. MacDonald knew that Ling Shizhe's company was engaged in high-precision CNC machine tool manufacturing, and the technical strength was very strong, and the quality of the machine tool was no worse than that of German and Japanese machine tools, but he didn't expect Ambrella's technology to be so strong, and he actually made the five-axis machine tool out in advance.

You must know that an internationally renowned machine tool manufacturing company like Siemens is still in the theoretical certification stage of the five-axis machine tool technology, and Ling Shizhe took out the five-axis machine tool. Smith. MacDonald was surprised.

"It is a five-axis grinding machine, which is different from Siemens," Ling Shizhe explained: "Siemens is engaged in a five-axis milling and machining center, which is two different things from our five-axis machine tool. ”

Didn't expect James. Smith. MacDonald waved his hand and said, "It doesn't seem to me to be different, it's just a different purpose." Ling, your five-axis grinding machine is there, let me see where this baby is, maybe I will be your first customer. ”

"Well, for the sake of the money, please come with me." After speaking, Ling Shizhe walked towards his exhibition area first. Smith. MacDonald quickly followed.

Didn't take a few steps, one. Large horizontal CNC machines appeared in James. Smith. McDonald's vision, "James. Smith. Mr. McDonald, I would like to introduce to you that this is the latest KTC-2000 five-axis horizontal grinding machining center developed by Ambrera Company. The aero engine blades you just saw are machined by it. Ling Shizhe pointed to the machine tool in front of him and said proudly (to be continued)