"The cost of composite materials is low?"

Professor Ali Khan listened to Lin Guanghua's words, and the pair of slightly cloudy gray eyes under the square-framed glasses subconsciously narrowed, and there were no other words, just such a repetitive questioning had already unreservedly displayed the meaning to be expressed.

As for Rahman and Zarif and other members of the Pakistani military delegation, at this time, they all set their eyes on the people of the Tengfei Group, like X-rays, eager to see the hearts, liver, spleen, stomach and kidneys of Zhuang Jianye, Lin Guanghua and others clearly.

How can something as tall as a composite material have a low cost?

That thing is the representative of the frontier of technology, the direction of future scientific and technological development, if it is not expensive, how to be worthy of high-end, there is actually a low-cost one, you Tengfei Group is not bullying us Pakistan does not know how to do it, where are you fooling the ghost?

Lin Guanghua had already guessed the reaction of Professor Ali Khan and others, turned his head and looked at Zhuang Jianye beside him, Zhuang Jianye nodded, Lin Guanghua showed a knowing smile, and immediately shouted to a workshop staff not far away, "Xiao Gao, bring two plates over." ”

"Okay!"

Xiao Gao saw that it was Chief Engineer Lin who called him, so he hurriedly answered, and then took down two metal plates the size of a keyboard from his processing table.

Lin Guanghua took it in his hand, put it on the mat, and then handed it to Professor Ali Khan, "Professor, look at this." ”

Professor Ali Khan took the plate in his hand, it was very thin, about 15 thick, and the whole body exuded a metallic luster, and it was light and fluttering in his hand, but it didn't look special.

"This seems to be an ordinary aluminum alloy material, as for the specifics I can't see now, but from my experience, it should be aluminum alloy. After a long period of careful reading, Professor Ali Khan finally came to a conclusion.

Lin Guanghua smiled, didn't speak, and handed the other piece in his hand to Professor Ali Khan again, "Professor, you're looking at this." ”

Professor Ali Khan took another metal plate of the same size into his hand, and the next moment, his wrinkled face shook suddenly, and he immediately looked up at Lin Guanghua, his face full of incredulity...... How is that possible?"

It is no wonder that Professor Ali Khan did this, because the moment he bought the second board, it was obvious to him that the weight of the two plates of the same size was significantly different, and the first one was much lighter than the second.

Obviously, the first plate that he judged to be ordinary aluminum alloy was a specially treated lightweight aerospace metal material, and the second piece was a real aluminum alloy.

As an old bird who has worked in Lockheed, Airbus, Boeing and other giants for half his life, he may not be familiar with other metal materials, but aluminum alloy, the most widely used material in aviation manufacturers, will be very embarrassing if he is not clear.

The result is good, I hunt geese all day long, but I was still pecked in the eye by geese.

"The second is an aluminum-lithium alloy, and the first is our newly developed superhybrid composite, which is not only 15 percent lighter than ordinary aluminum-lithium alloys, but also 2 to 5 more powerful than aluminum-lithium alloys in terms of strength and fatigue resistance. ”

Just when Professor Ali Khan fell into the shadow of misjudgment and couldn't extricate himself, Lin Guanghua's voice slowly came and drilled into his ears, but Professor Ali Khan did not completely recover from this, until Lin Guanghua's next sentence immediately made Professor Ali Khan feel like he had been baptized by divine oil, and he began to tremble inexplicably, so that his eyes almost bulged out.

"Of course, the most important thing is that the cost of this material, on average, is about two-thirds of that of aluminum-lithium alloy, which is basically the same as the cost of slightly better ordinary aluminum alloy. ”

"How is that possible?"

Now Professor Ali Khan is not unbelievable because of his wrong judgment, he is really completely shocked.

Professor Ali Khan has not seen this composite material, but has used it himself, and he is very aware of the complexity of the process and the difficulty of preparation, otherwise the cost of composite materials would not be staggeringly high.

However, the so-called superhybrid composite materials in front of us are not much better than the commonly used aviation high-end aluminum alloys in terms of performance, at most they are just a little lighter.

But in the field of aviation manufacturing, the core is the weight reduction of aircraft, light 1 is a major progress, not to mention the superhybrid composite materials are also lighter 15, not to say subversive, that is also to create a new field.

It is important to know that the weight reduction effect of the aircraft using this material will be very obvious, and the improvement of benefits will be obvious.

The cost of such high-quality materials is sky-high, and the result is similar to that of slightly better aluminum alloys.

Professor Ali Khan only felt that the aeronautical materials science system that had been mixed in Europe and the United States for half his life had collapsed, and he had a feeling that he had entered a dream and did not know what year his brain was pumping.

"Mr. Lin, you're not joking, it's 15 lighter than aluminum-lithium alloy, and the material properties are 2 to 5 higher, but the cost is only two-thirds of the latter, how does this sound like a dream. ”

I don't know how long it took for Professor Ali Khan to finally react, although his dark face was still trembling, he didn't say some perfunctory and prevaricating words because of his face, but said his true feelings.

Lin Guanghua nodded, "To be honest, in the process of our Haidongqing A-type development, when we got this kind of superhybrid composite material, I felt the same as you, I never thought that a composite material would be so cheap, but this thing really happened, and I came here for a long time to get used to it." ”

"That'...... How did you do that?" asked Professor Ali Khan, curious.

"Quite simply, we just swapped the aramid fibers in the aramid reinforced aluminium matrix composites for lower-cost glass fibers, and then we had this low-cost composite with the same properties as the aluminum alloy material, but with a lighter mass. ”

When Lin Guanghua said this, he had a smile on his face, but he was full of emotion in his heart.

In fact, this superhybrid composite material is one of the many fiber-reinforced metal matrix composites in the Tengfei Aviation Technology R&D Center, which has been experimented many years ago, but this low-cost material was not mature at that time, and can only be said to be an alternative variant of aluminum alloy.

Until Zhuang Jianye found that the cost was not in place when he reviewed the Haidongqing project, if the unit price of mass production would exceed 8, who would buy it at that time.

So he ordered to turn over the family and use all available means to reduce the cost, at this time, the Tengfei Aviation Technology R&D Center turned over to this glass fiber reinforced aluminum matrix composite material in its own technology accumulation.

Then, the latest metal matrix composite production process is used to greatly reduce the weight of the material and control the cost.

However, Lin Guanghua naturally couldn't tell Professor Ali Khan about these details, but even so, Professor Ali Khan opened his mouth in surprise: "Oh my God, fiberglass and aluminum, oh, it's really hard to imagine that these two materials together will have such an amazing effect!"

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