Chapter 618

However, no one is free to pierce this layer of window paper, because everyone here knows that the important thing of the country is really heavy.

Therefore, this topic was directly ignored by these Army leaders and technical officers before it came into being, and they continued to comment on a number of EDM numerical control equipment equipped with take-off aviation power.

"This explains why there are so many EDM numerical control machine tools, but there is no special EDM drilling equipment for turbine blades. They make a lot of bottles and cans for aerospace, but they can't use them. As a result, they add a short board to Tengfei aviation power. It's a pity."

Realizing that Tengfei group is making professional equipment for aerospace, and after listening to other people's comments, the air force chief sighed, and his tone was somewhat lost. Drilling turbine blades is the most difficult and high-end process in Aeroengine production, because this kind of process hole is nothing else but the film cooling hole of turbine blades.

EDM technology is just one of the most suitable technologies for this kind of hole. As a result, the air force chief searched for it for a long time, but was surprised to find no similar equipment, so he made a similar regret.

results in the air force chief to continue to express their views, Tucao space Department in the balanced development of some biased, listen to the first Liu Chun shouted: "make complaints about this leader, we do not have no special EDM CNC Kong Jia equipment......"

As soon as these words came out, the air force chief, who was still regretting a moment ago, immediately froze on his face. Does Tengfei aviation power have professional EDM CNC hole machining equipment? Where is it? Why didn't you see it?

When the chief was puzzled, Liu Chun pointed to the opposite direction: "where is the nb-620 EDM numerical control drilling machine, which is mainly used for machining process holes in aero-engine annular combustion chamber and outer honeycomb components..."

Liu Chun's face is still full of smile, just asked the officer's face that strange, this old goods just like did not see, still said with extraordinary confidence, sonorous and forceful, the concept of change to play that is called a slip.

The head of the air force who fell behind with the same doubts was also very ugly. He had seen the equipment for a long time. As long as he was not blind, he could see that the process hole of the annular combustion chamber of the wd-30s turbofan engine was being processed on it. However, the same process hole, the annular combustion chamber and the film cooling hole on the turbine blade were not the same level.

"Mr. Liu, you may not understand what I mean. We have just noticed that nb-620 EDM numerical control drilling machine is a good precision equipment, but we would like to know if your company has any special machining equipment for turbine blade precision holes derived from EDM numerical control technology?"

Just when the head of the air force and others were annoyed by Liu Chun's endless introduction, and some of them could not help but prepare to ask themselves, the technical officer who asked the question just now finally asked what he wanted to ask while Liu Chun stopped breathing.

Of course, the attitude is very polite. There's no way. Compared with other army leaders who are carrying generals, his rank is still very low. Naturally, he can't be as straightforward as those leaders.

However, they still have a clear attitude and do not beat around the Bush, which makes many leaders who are distracted by some unique production and processing equipment refocus on Liu Chun.

In fact, many people have found similar problems. It's just that many people don't remember to ask because they haven't digested the situation of other equipment. At this time, someone suddenly asks a question, which is tantamount to causing resonance among these people. Naturally, they should be concerned about it.

Liu Chun didn't expect to be discovered so soon. She was slightly stunned. She turned to Zhuang Jianye, who was communicating with the head of the headquarters alone. When she saw that he didn't respond, her heart was clear. Maitreya's smile reappeared on her face again. Facing the leaders and heads who had cast their eyes on her, she was still confident and said: "turbine blades of aero engines Especially for high pressure turbine blades, we really do not have special EDM CNC hole processing equipment, because we have delivered this process to nb-711 electrochemical hole processing equipment of No.8 worktable. "

As soon as the words came out, the technical officer in front of him frowned, and the air force chief behind the crowd was also full of doubts.

Nb-711 or something, they automatically ignored, obviously this very poor model name belongs to the problem of Tengfei group, but what the hell is electrochemical hole processing equipment? Why haven't you heard of it before?

Not only these two people, but also other leaders and leaders who know something about aerospace production are very busy. They know all kinds of hole processing equipment, but they have never seen electrochemical hole processing equipment.

"The turbine front temperature of wd-30s turbofan engine we produced is 986 ℃, but the turbine front temperature of wd-30sf turbofan engine improved is now 1228 ℃. Under the condition of the same quality of the two engines, the reason for such a significant jump is due to the precision machining of turbine blade film cooling holes by nb-711 electrochemical hole machining equipment, ladies and gentlemen Leaders and heads, this way, please. Worktable 8 is over there. "Just when people were confused or confused, Liu Chun suddenly threw out a big data, which immediately caused an uproar. You should know that if the aero-engine did not increase by 100 degrees Celsius, the thrust would increase by 20%.

From wd-30s turbofan engine to wd-30sf turbofan engine, the temperature in front of turbine of Tengfei aviation power increased by 242 ℃, and the performance jumped by nearly 50%!

In other words, the thrust of the wd-30s is 586 kg. If the thrust is increased by 50%, the thrust of the wd-30sf is 870 kg.

870 kg!

This thrust is enough for the power of small aircraft. If double engines are used, it can even meet the needs of a light medium trainer who is worried about power.

After all, the thrust of tfe-731 turbofan engine produced by Honeywell was only 1600 kg, but the total weight of the engine was 350 kg.

The total mass of wd-30s turbofan engine is only 142 kg, that is to say, the thrust of wd-30sf is increased by 50% due to the improvement of technology. The total mass of the two engines is less than 300 kg, but the total thrust is higher than that of single engine tfe-731 turbofan engine.

This is not good news for a light medium trainer due to the shutdown of the power plant, but a super subversive news.

Because of this, the eyes of those leaders and leaders who have always been concerned about the progress of a light medium trainer suddenly lit up. Even the head of the headquarters subconsciously looked at Liu Chun, who was already walking towards the 8 good workbench, and turned to Zhuang Jianye: "is it the improved model reported last time?"

"I've improved the performance again. I wanted to report to the headquarters after the test. You're coming." Zhuang Jianye is a big mouth with a bright smile.