Zhang Ping just talked about the machining accuracy problems faced in the trial production process of the UAV engine, and before he had time to elaborate on the processing accuracy of the specific parts, he called.

After answering the call, he looked angry.

Tang Fei noticed the change in Zhang Ping's face, and hurriedly asked with concern, "Director Zhang, what's wrong?"

Zhang Ping was obviously very angry, and said loudly: "How can they be like this, how can they say that they can change the hexagram if they have already talked about it?"

It's a backtrack.

Tang Fei realized that there might be something wrong with the overseas procurement of drone parts or the overseas import of raw materials, and Tang Fei waited quietly for Zhang Ping to continue.

First of all, he was angry, and then, Zhang Ping also sighed helplessly, and said a little deflated: "The level of our domestic material industry is still a little bit unable to keep up, which restricts the development of our aviation industry." ”

In the aviation industry, especially in the field of aero engines, there is a generation of materials, a generation of engines, often the advent of new materials, can promote the development of aero engine technology.

Tang Fei also understood that something had happened to the overseas procurement of the materials for the drone engine, and it should have been the seller's change, which made Zhang Ping so angry.

"Director Zhang, is there a problem with the overseas procurement of engine materials?"

"Hmm. Zhang Ping nodded lightly, "There are three kinds of materials for drone engines that need to be purchased overseas, and the engine manufacturer handed over the list of materials to our military as early as possible, and we also contacted overseas sellers through channels, if it goes well, in two or three months, these materials will be shipped to China one after another." ”

"I'm so angry, I just called from the capital, and the seller who originally sold our monocrystalline superalloy material suddenly changed his mind and raised the price to 20,000 US dollars a kilogram. ”

$20,000 a kilogram!

Tang Fei quickly calculated in his heart, that is, 20 US dollars per gram, which is equivalent to about 160 yuan per gram of Huaxia coin, which is almost the same as the price of gold.

This is taking advantage of the fire to rob, and it is too inauthentic.

Zhang Ping said helplessly: "It should be that the seller got some rumors and knew that we might buy these single-crystal superalloy materials for a very advanced engine, so they sat on the ground and raised the price." ”

Zhang Ping is full of endless helplessness, there is no way, the domestic material industry is still a little weaker, and it is impossible to smelt this single crystal superalloy at present.

Tang Fei said with concern: "Director Zhang, what are you going to do?"

"Hey......"

Zhang Ping let out a long sigh, "What else can I do, I can only pinch my nose and admit it, and buy it from them at a price of 20,000 US dollars a kilogram, let's buy some first, but the taste of being stuck in the neck is not comfortable." ”

This kind of taste is not comfortable for anyone.

Tang Fei was silent, and after being silent for a while, he made a decision in his heart. Helping the military get these single-crystal superalloy materials needed for engines is also helping their own drone engines remove a roadblock.

So, Tang Fei said: "Director Zhang, in fact, there is a little bit of such single-crystal superalloys in our Jiuzhou Industrial Group, but there are not many of them. ”

"Oh, you have this metal!"

Zhang Ping's eyes lit up and he looked at Tang Fei with hope.

Tang Fei nodded lightly, "Yes, there are some, but the number is not much, only 100 kilograms." ”

Tang Fei didn't dare to say too much, because there were too many of them, and the source was difficult to explain. There is no problem with only 100 kilograms, and with the strength and scale of Jiuzhou Industrial Group, there seems to be nothing inexplicable about getting 100 kilograms of single-crystal superalloy materials back from overseas through some of its own channels.

"100 kilograms, that's great, it's a great solution!"

Zhang Ping was overjoyed. 100 kg of single crystal superalloy is enough for the needs of several UAV engines, because this material is mainly used to produce turbine blades for UAVs, and 100 kg can produce turbine blades for several engines.

No wonder Zhang Ping was overjoyed.

In addition to being very happy, Zhang Ping also said: "Mr. Tang, this incident has sounded the alarm for us, we must develop our own material industry, and after I go back, I must report to the senior military leaders." ”

Tang Fei supported: "If we want to improve the level of our domestic aviation industry, we must vigorously develop the supporting material industry. ”

This time, Tang Fei can help quietly, but the number of times this kind of thing can be helped is definitely limited, because whenever you face a material problem, you will immediately have relevant materials, which will arouse the suspicion of others, and it will make sense once or twice, but it is not okay to have too many times.

As a reborn, Tang Fei knew that it was around this time that China began to increase the development of the material industry, and more than ten years later, all kinds of materials needed in the aviation industry can be basically self-sufficient and can be produced and manufactured domestically.

Including single crystal superalloys, powder superalloys, and several titanium alloy materials, etc., all of which can be manufactured domestically in the future, without having to ask grandpa and grandmother to import from overseas, no longer have to worry about being stuck by others.

The single-crystal superalloy thing is done.

100 kilograms of single crystal superalloy, said a lot less, said not much, at least enough to produce several engines. In the early stage of the UAV, the production and manufacturing volume should not be large, and there is no need to worry about this material in the next two or three years.

As for the mass production and manufacturing of UAVs, then when the time comes, you can invest funds, carry out technical research in China, strive for localization, and then import from abroad.

Such an advanced large UAV, the cost is certainly not low, the military can not assemble hundreds of thousands, at most the scale of 100 aircraft, the future needs of single crystal superalloys are not very much, even if it has not yet achieved domestic production, at a certain cost, hundreds of kilograms of single crystal superalloys, it is estimated that they can also be bought back from abroad.

There are 100 kilograms of single-crystal superalloy in the warehouse of Jiuzhou Industrial Group, Zhang Ping is relieved a lot, and he does not have to worry about being sat on the ground by others.

Zhang Pingdao: "Mr. Tang, the domestic aero engine manufacturer that undertakes the task of engine trial production, is currently facing problems in processing accuracy......

He explained the situation in more detail.

Tang Fei listened quietly, his mood was heavy.

The machining accuracy of this factory is not up to it, not because their technical level is not good, but because there is no high-precision five-axis linkage CNC machine tool.

It is difficult for a good woman to cook without rice.

Zhang Ping said slowly: "Due to the equipment embargo of Western countries, it is generally difficult for us to buy high-precision CNC machine tools and equipment from overseas. ”

Tang Fei nodded, he also knew about the situation.

Led by a Western country, a joint Western developed country has made an embargo list, which clearly lists the model and accuracy of machine tools and equipment that are prohibited from being sold to Huaxia.

In particular, machine tools that have reached a certain machining accuracy are all prohibited from being exported to China, that is, the embargo of machine tools.

It is said that a large domestic aircraft factory needs high-precision CNC machining equipment to produce and manufacture a domestic main fighter, and they want to import a high-precision machine tool from a neutral country in Western Europe.

First contact a company in a small developed country, and this company will come forward to buy this high-precision machine tool from Western Europe, because this small developed country is not subject to the embargo of Western countries.

After the machine tool is bought, it will be transported to this company for installation and commissioning, and people from Western countries will accept it to make sure that you have indeed installed and debugged it in your own plant, and have not sold it to Huaxia.

After the acceptance of the Westerners and the departure of the Westerners, this equipment was quickly dismantled, and then loaded and shipped to our country for the processing of some high-precision parts and components of the main fighters.

But Westerners are not stupid and have always guarded against this. They clearly stipulate in the contract that they will come to the inspection once a year, mainly to see if your machine tool is in the original factory.

Whenever the Westerners want to come, this equipment is quickly dismantled in China, immediately loaded on ships, transported to this small developed country, and then assembled in this factory, and after the Westerners have completed the acceptance, it is dismantled and quietly transported to China, and so on, and so on every year.

There's no way around it.

After several rounds of this and repeated disassembly and reassembly, this high-precision machine tool gradually lost its high precision and greatly shortened its life.

We can't produce advanced high-precision machine tools in China!

After listening to Zhang Ping, Tang Fei's mood became very heavy, and he was even a little distressed.

Our well-known domestic aero engine factory, known as the cradle of small and medium-sized aero engines, does not even have a high-precision five-axis, which is very distressing.

Zhang Ping himself sighed.

In the office, the atmosphere seemed a little heavy, and after a long time, Tang Fei also let out a long sigh, "Director Zhang, I didn't expect that our domestic aero engine factory actually has such a level of equipment, and there is not even an imported high-precision five-axis." ”

"yes. Zhang Ping shook his head and said: "It's all the result of the embargo on machine tools." ”

After a long time, Zhang Ping said: "Mr. Tang, at present, we have faced the problem of processing accuracy of several key components, our military has learned that the entire domestic aviation industry, there is no CNC five-axis machining center with such precision, and you may need to relax the requirements and reduce the processing accuracy requirements." ”

The whole set of technical data is from Jiuzhou Industrial Group, if you really want to relax the requirements and reduce the processing accuracy, you must pass through Jiuzhou Industrial Group, and others can not be the master.

This is the pinnacle of small and medium-sized turbofan engines, with excellent comprehensive performance and high technical content, if the machining accuracy requirements of the parts are reduced, it will inevitably affect the performance or quality of the engine.

Zhang Ping is also worried about this.

Tang Fei shook his head slowly, denying the requirement to reduce the processing accuracy.

……

Today's three watches, the first one is sent!