Chapter 382

If someone else said that, the head of the headquarters would not be like this, but Peng Chuan and Wei Guangping nodded in affirmation, and the head of the headquarters would know that it was probably right.

How can we say that the head of the headquarters is also a person who came from the war years, and his eyes are still very accurate. Although Peng Chuan and Wei Guangping, the former companions, are like wooden people and nervous, they don't know how to speak.

But the two men's character was also touched by the head of the headquarters. Seeing that the two men agreed with each other, the head of the headquarters asked Zhuang Jianye.

The chief asked, Zhuang Jianye naturally can't neglect, with the head of the headquarters and others carefully look at the whole set of equipment processing process, and a few unfinished semi-finished products, immediately told Peng Chuan: "Lao Peng, you go to take the sample we made a few days ago."

Peng Chuan was stunned for a moment, and immediately responded. He rushed all the way to the finished product warehouse to get things.

And Zhuang Jianye pointed to the chemical milling equipment in front of him and said: "at present, we have only studied the chemical milling process of several aluminum alloys. We haven't paid close attention to the more complex nickel based alloy and titanium based alloy, so we don't know what the 146 factory mentioned by the chief just now mainly produces. If the alloy structure of the parts is complex, we may need to concentrate on tackling key problems … Ha ha, after all, our factory... "

When Zhuang Jianye said that, he wanted to talk and stop. With a proper red face, he grasped a weak but shy expression just right.

Chemical milling is a common process for cutting complex thin parts such as leading edge and skin of aircraft wing. After all, if the blank with thickness of two or three millimeters is machined purely, it is easy to cause damage to the parts due to poor precision control.

Even with the popularity of numerical control machine tools, the accuracy has been greatly improved, and even multi axis numerical control can achieve the accuracy that was difficult to achieve before, which is enough to complete the processing of light and thin parts with complex surfaces.

However, it's not cost-effective to do so. You should know that there are at least thousands of complex thin skin parts on an aircraft. Apart from that, there are more than 3400 similar parts of zeus-3 UAV sold to Europe by Tengfei factory.

It is divided into more than ten categories and hundreds of varieties.

If each one is to be processed by multi axis CNC machine tools, there will be hundreds of schemes for optical tooling. Not to mention, there will also be hundreds of schemes for CNC programming, and they will be replaced anytime and anywhere according to the production progress.

This is tantamount to an invisible increase in labor costs several times.

What's more, if large-scale production is required, the number of such high-precision machine tools must not be small. If so, it's just enough. The problem is that the types of machine tools must be large, medium and small. Otherwise, if you use a small five axis machining center to process big parts, you can't make a three or four meter long fuselage.

In the same way, the machine tool that can process the body with a diameter of seven or eight meters can not finish the parts with the size of nail cap.

And there are not two parts like this, but thousands or tens of thousands of them. If they are all machined with this kind of high-end machine, no one can afford to play with them.

In contrast, chemical milling is much more cost-effective. As long as the actual situation is well adjusted, the temperature is well controlled, the parts to be processed are reserved, and then soaked in the chemical pool, and the erosion effect of chemical reaction is used to complete the similar machining process. It is not only large batch, but also repeatable, and the cost will be greatly reduced.

However, this seemingly uncomplicated process has two core points: one is the real-time measurement of components when soaking in chemical reagents; the other is the preparation of erosion liquid based on the characteristics of materials.

The former Tengfei factory is not a problem. Thanks to its accumulation in laser precision measurement, Tengfei factory has cooperated with North China Institute of optics to carry out other research on precision measurement, which has taken the lead in China.

What bothers Tengfei factory is the accurate parameters and detailed metallographic characteristics of other alloy materials. There is no way. It is impossible for Tengfei factory to do everything. The material is another scientific and technological tree, and it is also a huge pit. Tengfei factory has already been unable to extricate itself from aeroengine and special equipment. With the addition of a composite material, Tengfei factory has been exhausted physically and mentally for a long time In the third pit, I jumped, so I had to stop the erosion liquid of several aluminum alloys.

But the problem is that we can't just hold back. After all, nickel based alloy and titanium alloy will be widely used in manned aircraft in the future. If we don't make it clear, it will be very unfavorable for Tengfei to enter the field of manned aircraft.

Therefore, Zhuang Jianye's performance at the Academy Awards is both eloquent and shameful. To put it bluntly, he wants to make use of the head of the headquarters to let the national team play, and then take off the factory to make some profits in the back.

As a result, the head of the headquarters didn't even look at Zhuang Jianye and said, "you don't have to worry about this. As long as the performance of your products is OK, I will coordinate with relevant departments to tackle key problems here..."

As soon as these words came out, Zhuang Jianye felt a pause in his heart. When he finished, he was a little fresh meat playing with others. He was looking for abuse. Now he's OK. He was seen by the head of the headquarters. He also picked up the cheap. If he didn't want to be taken as cheap, he would burn high incense.

So Zhuang Jianye's shining eyes quickly darkened. Although he was still smiling, his spirit was much weaker than just now.The head of the headquarters looked at the declining Zhuang Jianye with a smile, and the smile became more and more brilliant. He immediately turned his head and looked at some parts that were confused by the extreme turnover. The leader said, "I think this kind of basic research is still led by your ministries and commissions. If you can contact the Aerospace Department, you two should concentrate on selecting competent enterprises and single enterprises together It's our characteristic and our institutional advantage that we should work together with colleges and universities to do great things. "

Then pointed to the front of the chemical milling equipment, continued: "can make such equipment enterprises is very good, can do some appropriate policy tilt."

The leaders of the ministries and commissions immediately nodded, which was even an instruction. When they went back, a little tidying up was the official document. As for Zhuang Jianye, he was relieved that he finally got on the national team and a big stone fell to the ground.

At this time, Peng Chuan also came over with two pieces of basin sized stiffener skin parts. The middle-aged officer surnamed Zhao rushed up and held the parts in his hand. The upper skin was like a piece of paper sticking to four stiffeners. It was so light that people trembled, for fear that one would be broken accidentally.

The middle-aged officer surnamed Zhao also did it carefully with the centralized measuring instrument, and then nodded with satisfaction. Then he turned to Zhuang Jianye and asked, "the quality of the parts is very good, which means that your equipment is very good. I wonder if you are interested in transferring this set of equipment?"