Even if it is an aviation parts product, no one can guarantee that its blank is fully qualified without any defects, like this forging blank, ultrasonic inspection can often find its internal defects, and this time it is the same, the blank is abnormal.

Li Tianfeng is also a knowledgeable person, and it seems that there is indeed a defect in the metal structure inside the blank, which should be a small internal microcrack.

Such tiny cracks are often formed when the blank is forged, because it is an aviation parts product, and it is such an important part, cracks are absolutely not allowed, even if they are very small.

The female engineer who was conducting the ultrasonic flaw detection inspection frowned slightly, carefully checked the confirmation, and then took out a red marker pen to mark the parts where microcracks were found.

Inadvertently raised her head and saw Li Tianfeng, the female engineer was obviously stunned, and then, with a burst of joy, "Mr. Li, you are here!" ”

Li Tianfeng nodded, "How about the defect?" ”

The female engineer said: "Mr. Li, this metal blank found internal microcracks, and at the location I marked, it was about two or three millimeters away from the metal surface. ”

Li Tianfeng took this blank part, and the design of the centrifugal impeller came to mind, and after a simple scrutiny, Li Tianfeng nodded, if the defect crack is in this position, there may be room for rescue.

Because this is a blank, the rough machining is completed, and there is a large part of the machining allowance, as long as the micro-cracks can be machined out, the defects can be eliminated, and the qualified parts that fully meet the requirements can be processed.

Thinking about it in his heart, Li Tianfeng knew that things were not to the point of being particularly strict, so he took out the phone, called Zhang Can over, arranged it, and carried out rescue processing, and then carried out ultrasonic inspection after processing the defective part with a margin of a few millimeters.

After the parts were salvaged and processed, Zhang Can personally sent them over, and saw that the ultrasonic examination was carried out again, Zhang Can's heart was also suspended, the importance of this part, Zhang Can knew more clearly, this was the first part of the "TFWZ001" turboshaft engine, and the blank was borrowed from Factory E, so this one.

If this part is inspected again and defects are found, then there is no room for recovery, can only be scrapped, and the part is one piece, in case of scrapping, then you have to forge the blank yourself, the entire development plan will be greatly delayed, you know, Tianfeng Technology's forging workshop is still under construction.

Li Tianfeng was also a little worried, and watched the female engineer re-conduct the ultrasonic flaw detection inspection, the space seemed to freeze at this moment, and the entire ultrasonic inspection room was very quiet, only the sound of the ultrasonic flaw detector working.

The female engineer was also very serious, knowing the importance of this part, meticulous, serious inspection, after a long time, the female engineer's heart was light, and Li Tianfeng, who had been beside him, also breathed a sigh of relief.

Obviously, Zhang Can also saw Li Tianfeng's expression, and couldn't help but ask in a low voice: "Boss, is the ultrasonic flaw detection of the parts qualified?" ”

Li Tianfeng nodded: "It should be qualified." ”

The female engineer stopped the inspection and said to Li Tianfeng with a happy face: "Mr. Li, the parts inspection is completely qualified, and no defects have been found. ”

"Okay." Li Tianfeng was happy for a while, the blank was finally qualified, and the next step was to carry out follow-up machining, and after the parts were processed, the relevant test work could be carried out.

"Zhang Can, the parts will be handed over to you, don't give the basket, you must process the parts smoothly." Li Tianfeng solemnly explained.

"Boss, don't worry, I will personally focus on the processing of this part." Zhang Can assured.

Li Tianfeng nodded, thought for a while, and said: "Zhang Can, get a pioneer piece, each process, first process the pioneer part, and then process this formal part." ”

The so-called pioneer parts are to ensure that the formal parts are foolproof in the processing process, do not scrap the formal parts, use other materials, or the same grade of materials to process an informal part, each process first processes the pioneer parts, in case there is a problem in the processing, the scrapped is also the pioneer part.

"Boss, no problem, I will definitely process a pioneer piece to ensure that our centrifugal impeller is processed smoothly." Zhang Can said.

The blank part of the centrifugal impeller has just been turned with a margin to eliminate the internal defects, the size of the blank has changed to a certain extent, and the subsequent processing has to be adjusted in size.

……

When he returned to his office, he sat down to take a sip of tea, ready to take a look at the "TFWZ001" turboshaft engine turbine disc sent by Qiu Wen'an, and Liu Wei came in.

"Boss, I just received a fax from Harry Burton that Mr. Brown Jr. is coming to our company for inspection, and the date is set for the 26th of this month."

Li Tianfeng was happy in his heart, although the fax did not say what the specific thing was about coming to his company this time, Li Tianfeng guessed that nine times out of ten it was related to the self-locking nuts he sent to Little Brown last time.

Seeing Li Tianfeng's happy face, Liu Wei asked, "Boss, you look very happy." ”

Li Tianfeng nodded and said with a smile: "Mr. Liu, it seems that someone came over to send us money, you should do a good job of contacting Harry Burton Company and doing a good job of receiving Mr. Little Brown." ”

Liu Wei was also overjoyed, and thought to herself, could it be that Little Brown came over to send money to Tianfeng Technology Company, so Liu Wei asked: "Boss, do you mean Mr. Little Brown?" ”

"Yes, this is little Mr. Brown." Li Tianfeng smiled and nodded, "If nothing else, Mr. Little Brown will enthusiastically send me hundreds of millions of dollars in patent royalties." ”

Hundreds of millions of dollars!!

Hearing this, Liu Wei was also excited, as if she had won a super prize, and said excitedly: "Boss, I must do a good job of picking up the airport and doing a good job in public relations services." ”

"Hmm." Li Tianfeng nodded, watching Liu Wei walk out of his office with her upright buttocks, Li Tianfeng thought in his heart, a good thing, a great thing, someone sent money over.

"In addition to the patent transfer, do you take the opportunity to get some processing business from Brown Jr." Li Tianfeng thought in his heart.

How did Li Tianfeng know that Xiao Brown and his entourage were a huge team, which gave Li Tianfeng a huge surprise, of course, this was a few days later, and Li Tianfeng at this time was still thinking about getting some more processing business.

With the increasing scale of Tianfeng Technology and more and more employees, before the official production of the "TFWZ001" turboshaft engine, a large amount of processing business is required, on the one hand, to earn the wages of employees, and on the other hand, to exercise everyone's processing ability level.

Tianfeng Technology Co., Ltd., 70% to 80% are front-line production employees, followed by engineering and technical personnel, and there are few management personnel.

Like the No. 1 production workshop, now there are more than 300 people, and the front-line technical workers account for nearly 300 people, followed by more than 20 process technicians, and there are very few management and auxiliary personnel, less than 20 people. Li Tianfeng has always adhered to the elitism and simplification of management personnel, and he will definitely not create a huge team of management and auxiliary personnel like state-owned enterprises.

When he was in Factory E before, Li Tianfeng knew that there was a saying in Factory E that "one person does things and two people watch, and the other is mischievous". It can be seen that the larger the management and support team, the lower the efficiency, and the more things will be blamed.

Opening his computer, Li Tianfeng opened the design drawings of the "TFWZ001" turboshaft engine sent by Qiu Wen'an and ignited the turbine disk, and looked at it seriously.

The "TFWZ001" turboshaft engine has only one stage gas turbine, one stage free turbine, the gas turbine pushes the engine itself to rotate parts, such as the high-speed rotation of the compressor, and the free turbine mainly outputs power.

Unlike the turboshaft C engine being trial-produced at factory E, the turboshaft C engine has a two-stage starting turbine, while the "TFWZ001" turboshaft engine only has a one-stage combustion turbine, and the effect of this turbine is even better than the two-stage gas turbine of the turboshaft C engine.

If people in the industry see this stage of gas turbine of the "TFWZ001" turboshaft engine, they will definitely be shocked, because this new design, in China, even the turboshaft C engine, which is known as the most advanced in China, does not adopt such a design.

At the beginning, Li Tianfeng gave Qiu Wenan a design sketch, and Qiu Wen'an's design team carried out specific design work according to this design sketch.

The "TFWZ001" turboshaft engine adopts high-power turbine and rotor technology, ultra-high turbine inlet temperature above 1900K, high-velocity gas turbine blades, and a new turbine blade design.

Correspondingly, the gas turbine has adopted a lot of new designs, and now, Li Tianfeng is looking at it carefully, and even some key sizes, Li Tianfeng is still looking at it very seriously.

Aero engines, compressors, combustion chambers, and turbines are all very critical components, and the design of this gas turbine disc does not dare to be careless, Li Tianfeng looks very carefully, and even sometimes calculates, frowns, and records the places that need to be improved and perfected one by one.

Decades ahead of the design concept of this era, Li Tianfeng has enough confidence to design the most practical and suitable gas turbine for the "TFWZ001" turboshaft engine, and give full play to the greatest material advantages and design advantages.

……….

Today's three watches, the first one is sent. R1152