Start with the aviation industry

Chapter 63 Let me design it (three more)
Who is this.
Lin Feng was also slightly curious, thinking in his heart, is Mr. Wang's guest a great leader, or some expert?
Wang Tianfang introduced, "Old man, this is the Xiao Lin I mentioned to you just now. He is very skilled in the field of CNC machining."

Then he introduced, "Xiao Lin, this is the Zeng director of the Phoenix Aero-Engine Design Institute, an expert in domestic aero-engine design."

Lin Feng hurriedly said, "Director Zeng, hello."

Zeng Zhihong waved his hand and said, "If you are an expert in design or not, just treat me as an ordinary person. Please help me take a look at this design drawing first. Can I use your imported CNC five-axis machining."

Lin Feng said modestly, "Director Zeng, my level is limited, I..."

Before he finished speaking, Wang Tianfang interrupted him with a wave of his hand, "Xiao Lin, Director Zeng is not an outsider, so you don't need to be modest. Look at the design first."

Lin Feng nodded and began to look at the design drawing seriously.

This is an integral turbine disk with a maximum diameter of 165mm and high-temperature alloy material GH4033. The precision of the blades is very high.
Lin Feng focused on the blade part. Obviously, this is a brand new blade shape that requires high precision, especially the profile of the blade shape must be within 10 wires.

After looking at it for several minutes, Lin Feng stopped and looked away from the design drawing. After watching for a few minutes, he had completely memorized the design drawing in his mind.

The god-level learning talent is so terrifying, such a complicated leaf shape, so many sizes, especially a large number of coordinate sizes, others may feel dizzy just looking at it, but Lin Feng memorized them all.

"Little Lin, how are you doing?"

Zeng Zhihong was the first to ask. He wanted to know the result very much, which was related to his entire design.

If it cannot be processed, then the design may need to be changed. It is not enough for you to design some things, but you have to see whether they can be processed and manufactured.

If even the Phoenix Factory can't process it, then looking at the whole country, it is estimated that it is rare to be able to process this whole turbine disk.

Lin Feng said slowly, "The milling of the blades is not a big problem, but"

At the beginning, Zeng Zhihong felt relieved when he heard that there was no problem with the milling of the blades. When Lin Feng said the word "but", his heart was raised again.

"Xiao Lin, just tell me if you have any difficulties." Zeng Zhihong said.

Lin Feng said, "This is a high-temperature alloy material, the material grade is GH4033. This material has high hardness and poor processing performance, especially when milling is relatively difficult."

If it is a titanium alloy compressor overall blade disc, even if it is a brand new blade shape that requires high precision, Lin Feng is sure to process it successfully.

Because the milling performance of titanium alloy is excellent, the requirements for cutting tools are not very high.

High-temperature alloys are different. The material is hard, and the requirements for cutting tools are much higher.

Many people's first reaction when they hear about "titanium alloy" is that it is very hard and has very high strength, but it is not.

The hardness of titanium alloy is not as high as everyone imagines, at least many grades of steel are harder than it.

The main advantage of titanium alloy is that the material is light and its strength is higher than that of aluminum alloy, so it is widely used in the field of aero-engines.

But it also has a disadvantage, that is, it is not resistant to high temperature and cannot be used to manufacture high-temperature parts of aero-engines, such as combustion chambers, turbines, and tail jets. Titanium alloy materials are not used. It is mainly used in compressors and fans, because these two One is not a high temperature part.

"Xiao Lin, if you have any difficulties, just tell me directly." Wang Tianfang also said the same.

Lin Feng didn't beat around the bush, and said directly, "Our imported five-axis linkage CNC machine tool has no problem with the processing accuracy of this integral turbine blade disk."

"The biggest problem is that there are no suitable knives for the time being. GH4033 is made of hard material and has high requirements for knives. It must be a high-quality alloy knives, preferably imported knives."

Need to import knives!

Zeng Zhihong was slightly disappointed. As the deputy director of the Phoenix Aero-Engine Design Institute and a well-known designer in the field of aero-engine design, he had some resources and channels, and it was not a big problem to import some alloy knives.

But it will take time, at least two or three months, and it seems that the alloy tools needed to process the whole turbine disk need to be customized, and two or three months may not be enough.

He can't afford to wait.

To be precise, this missile project cannot afford to wait. It needs to carry out design verification as soon as possible, and then the design is finalized. The military is waiting for the mass production of this missile.

what to do, what to do
"Xiao Lin, besides imported knives, are there other knives that can be substituted?"

Lin Feng pondered for a while and said, "There is a way."

"Oh, tell me what you can do." Zeng Zhihong's eyes lit up, as if he saw hope.

Lin Feng said, "The solution is to design several special alloy milling cutters for the processing of the whole turbine disk, and find a powerful cutting tool manufacturer in China to manufacture these alloy milling cutters, which will take less time than importing them. Much more, maybe half a month is enough."

Half a month was within Zeng Zhihong's acceptance range.

Wang Tianfang said, "Our factory has a tooling design department. I'll ask the head of the department to come over and contact you. If you have any requirements for tool design, you can communicate with him."

Lin Feng said, "Don't be so troublesome, I will design these kinds of knives, and after the design is completed, you can quickly customize it according to the design drawing."

what!
You design it!

Kobayashi, will you do such a professional thing as knife design?
It wasn't just Wang Tianfang who was surprised, Zeng Zhihong also said in his heart, it seems that Xiao Lin is an all-rounder, and he knows how to design knives.

Surprised, Wang Tianfang was a little worried, and reminded, "Xiao Lin, can you do it?"

Lin Feng replied confidently, "There should be no problem."

It's not that he wants to install a fork in front of the leaders, but that he knows exactly what kind of alloy milling cutter is needed. If it is entrusted to others to design, there will inevitably be some deviations.

Knife design is a very professional thing, but Lin Feng really has this confidence, because he has read several professional books on knife design and manufacturing during this period of time.

The contents of these professional books are deeply remembered in my mind, and I have a lot of experience. What is missing is the actual design.

Now, this is an opportunity to design it yourself.

As for surprising the two leaders, that was really not Lin Feng's intention.

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(End of this chapter)