The relationship between the two was there, and Yang Xianfeng did not hide it, and said directly and truthfully: "Hey, it's not this damn turboshaft C engine, after the factory inspection and commissioning, it was found that the blades were more or less blued every time, and the factory jointly held many fault analysis meetings, but never came up with an effective solution." ”

Li Tianfeng knew that the army users had great hopes for the turboshaft C engine of the E plant, and the Wuzhi 10 and 10 meters were put into the pot, and the helicopter factory went to the front of the E factory, and many Wuzhi 10 had been produced, but none of the engines were installed.

Helicopters have no engines, so there are only two ways, either to continue to buy engines from abroad at high prices, or to continue to wait.

Buying an engine from abroad, it is easy to be stuck by others, because this is a seller's market, people want to sell to you and sell to you, if they want to sell to you, they can not sell it, and even often raise the price, you have not a little way.

The military obviously knows this, and may still be deeply touched, so it is necessary to develop its own turboshaft engine in China, and there are so many problems with turboshaft C, it is conceivable how much pressure Yang Xianfeng has as the chief engineer of Plant E.

After listening to Yang Xianfeng's narration, Li Tianfeng said: "In this way, there are only two reasons, either the temperature before the turbine is too high, or there is a problem with the material. ”

Yang Xianfeng said: "No, the temperature before the turbine is really a little high, after taking relevant measures, the situation is a little better, but there are still some turbine blades that are blue, and then analyze the material, and find that the material also has certain problems." ”

Li Tianfeng said: "Mr. Yang, there is a problem with the materials, use qualified materials." ”

Yang Xianfeng smiled bitterly: "Tianfeng, you don't know that the domestic material industry is relatively backward, especially the high-temperature alloy material used in the turboshaft C turbine blades. Because of the difficulty of smelting technology, the quality of the material has not been very stable. ”

The quality standard of the material is also a range, such as mechanical properties, which is specified in which range, such as high temperature resistance, is the same. Satisfying the conditions within a certain temperature range is qualified, because it is a range, and the quality performance of the material can be up or down.

Generally speaking, the quality of imported metal materials is relatively stable, the consistency is relatively good, and the material properties of different batches and different furnace batches are basically the same, and there will be no great fluctuations. Domestic materials are new materials, such as the superalloy material used in turboshaft C turbine blades, and the quality fluctuation is relatively large.

Li Tianfeng knew that this was really a tricky problem, so he said: "Mr. Yang, the blue surface of the blade is formed because of the high temperature working environment. If a thermal barrier coating is applied to the surface of the blade, it will provide good protection. There is no need to worry about the blueness of the blade surface. ”

Yang Xianfeng said: "Tianfeng, this is a good plan, I will communicate with the design institute to see if it is feasible." ”

Li Tianfeng said: "Mr. Yang, you communicate with the design institute first, and if you have any questions, you can find me." Our surface and heat treatment workshop of Tianfeng Technology has been built, and advanced plasma spraying equipment has been purchased, which can carry out plasma spraying on the surface of blades. ”

Yang Xianfeng said: "Okay, then if there is any problem, we will contact again." ”

Li Tianfeng nodded, and after ending the call. Li Tianfeng thought in his heart, spraying thermal barrier coating on turbine blades to improve the high temperature resistance of turbine blades is a very technical thing, and I don't know if the E factory and the design institute can succeed.

"TFWZ001" turboshaft engine blade material grade and E factory turboshaft C turbine blade material grade is the same, however, in the design of the blade is inconsistent, Tianfeng Technology's turbine blade is not only more advanced, but also adopts ultra-cold design, there are many cooling holes on the blade, in the working can be carried out air film cooling, in addition, the blade will also be sprayed with thermal barrier coating, the same material of turbine blades, TFWZ001" turbine blade high temperature resistance greatly improved.

Because the blades can withstand higher temperatures, the pre-turbine temperature of the "TFWZ001" turboshaft engine is much higher than that of the turboshaft C of factory E, and the output power of the engine is closely related to the temperature before the turbine, so the output power of the "TFWZ001" turboshaft engine can reach 1800kW, while the output power of the turboshaft C of factory E is only 1200kW.

After talking to Yang Xianfeng on the phone, Li Tianfeng was really a little worried, maybe the E factory would not be able to get a qualified thermal barrier coating for turbine blades.

However, Li Tianfeng will not pay too much attention to these things for the time being, but will devote all his energy to the development of the "TFWZ001" turboshaft engine.

The three-year gambling contract with Wang Guohong is coming to the end of this year, Li Tianfeng can't do it if he doesn't hurry up, this gambling contract, like a tight spell, Li Tianfeng himself is a little relaxed, and he will wake up immediately, and then he will be full of fighting spirit and enthusiasm, and devote himself to the development of this turboshaft engine.

……

"Boss, this is the list of teams that will conduct environmental and safety inspections on our company in the future, a total of five people, led by Tang Kaiyu, deputy director of the Municipal Environmental Protection Bureau, and a section chief of the Safety Supervision Bureau." Liu Wei walked into Li Tianfeng's office and reported.

Li Tianfeng took the list and looked at it a little, and said impatiently: "Check it, check it, whatever they want." ”

He added: "Tomorrow, I will ask Cai Bin to bring a few people to accompany them throughout the inspection, and some key departments that need to be kept secret cannot be allowed to enter." ”

Liu Wei quickly understood what Li Tianfeng meant, and said with a wicked smile: "Boss, this is better, many of our security guards are special forces, and these people are following around, but I'm afraid they won't be able to come out with a lot of moths." ”

Li Tianfeng meant this, nodded, and then asked: "Zhang Haiping from the Equipment Department of the General Staff Department went to Songzhou this evening to come to our Tianfeng Technology to have a look at it as a private person. ”

Liu Wei said: "The car that picks up people has been sent out, and it will wait outside the airport, and after receiving people, arrange for Director Zhang to stay at the State Guest Hotel." ”

Seeing that Liu Wei's arrangement was in good order, Li Tianfeng nodded with satisfaction.

So far, Li Tianfeng does not know Zhang Haiping's position and rank, but only that he is a director of the Equipment Department of the General Staff.

However, judging from the momentum that Zhang Haiping looms out of his body, as well as his conversation and demeanor, he is afraid that his position is not low.

……

Ambassador Hotel, Lotus Hall.

This private room has almost become Li Tianfeng's royal private room, and some important guests are invited to banquets, which are basically in this private room, and Chen Fatzi of the State Guest Hotel is also very knowledgeable, under normal circumstances, this private room has always been reserved for Li Tianfeng.

The guest of honor was seated, and Zhang Haiping saw such a large table of sumptuous dishes and two bottles of good wine, and couldn't help but say: "Mr. Li, this specification is a bit too high, and it can't be like this next time." ”

Li Tianfeng said with a smile: "Where, where, Director Zhang is a guest from afar, we don't dare to be too casual." ”

Greetings, talking and laughing, gradually talked about the aero engine, Zhang Haiping said: "Since the last air show, when I returned to the capital, I checked a lot of information, and found that your engine has a lot of new designs, so I want to come and take a look at it." ”

Li Tianfeng said: "Yes, I'll take you to our company tomorrow to take a good look, but today we have to eliminate these two bottles of wine first." ”

Zhang Haiping smiled heartily, he drank the wine very boldly, the wine shows the character, Zhang Haiping's personality will definitely not be bad, Li Tianfeng thought in his heart.

If it is one-on-one, Li Tianfeng really can't drink Zhang Haiping, but it is different with other people to help, Sun Kang, Liu Wei and others all toasted Zhang Haiping, and in the end, it was Zhang Haiping who was drunk.

Tonight's wine, although Li Tianfeng was slightly drunk, he was very happy in his heart, Zhang Haiping was good, and he was worthy of his own friendship.

………

I drank a lot of wine last night, and Li Tianfeng came to Tianfeng Technology Company a little late, and at this time, the joint inspection team had arrived at Tianfeng Technology and started the inspection.

In terms of Tianfeng Technology, it was a manager under Liu Wei who came forward to receive and cooperate with the inspection work. Tan Yan is not only a master's degree, but also has outstanding ability, sharp teeth, and a bit of a pungent personality, and is Liu Wei's right-hand man.

Of course, Cai Bin also brought four security guards over, and according to Li Tianfeng's requirements, he cooperated with the inspection throughout the whole process.

Tang Kaiyu, deputy director of the Environmental Protection Bureau, who led the team, saw that it was only an ordinary manager of Tianfeng Technology who received him, and he couldn't help but sink his face, "What about Li Tianfeng?" Why didn't you see his figure? ”

Tan Yan had long known that this group of people had come to find fault, and she had already prepared in her heart, but now seeing that the other party called her boss's name directly, without any respect, Tan Yan was slightly angry in her heart, so Tan Yan said: "Deputy Director Tang, our Mr. Li is very busy and is receiving an important guest, so I will be responsible for the reception." ”

This is said at a very high level, although it is neither humble nor arrogant, but as soon as he said "Deputy Director Tang", he expressed his attitude, and said that Mr. Li is receiving important guests, and you are received by me, which means that your Deputy Director Tang is nothing at all, and only a manager like me can receive you, and there is no need for our Mr. Li to come forward.

Tang Kaiyu is not stupid, how can there be a reason that he can't understand, suddenly, his whole face almost darkened, and he thought angrily in his heart, if Lao Tzu doesn't find a lot of problems this time, Lao Tzu will not be surnamed Tang.

The rest of the inspection team thought to themselves, how could this woman be so sharp and sharp, and she barely swore half a dirty word.

………

Today's two watches, the second one will be sent!! (To be continued......) R1292