No. 1 production workshop.

Next to a CNC lathe, there are more than a dozen semi-finished products of the ninth stage wheel of the turbofan B compressor that have been roughed and semi-finished, and these semi-finished parts, without exception, all have a thin layer of oxide scale.

A number of car masters, is doing the preparatory work before processing, while doing these preparations, but also stop from time to time, look at the processing process card placed on the work table next to the machine tool, obviously in accordance with the requirements of the process requirements of strict operation.

Not far away, Li Tianfeng and Tang Jianyi walked in together, and as they walked, they seemed to be still exchanging something.

"Mr. Li, you have added a lot of machine tools and equipment, and it seems that the number of personnel has also increased." Tang Jian yì walked and said.

Li Tianfeng nodded, the first production workshop has installed a few good quality imported CNC machine tools, at present, the first production workshop has more than 100 machine tools, and in another month or two, all kinds of machine tools and equipment will reach more than 200 units, basically meet the original process design requirements.

In terms of personnel, Tianfeng Technology has recruited a group of people, who have been on duty on the first day after the Spring Festival, and the personnel of the No. 1 workshop have also increased accordingly, reaching the scale of more than 200 people, and in another one or two months, it will reach more than 300 people, basically meeting the full staffing requirements.

"Expert Tang, in another one or two months, there will be great changes here, there will be a lot of imported machine tools and equipment, and the number of personnel will increase a lot." Li Tianfeng introduced.

Tang Jianyì was slightly surprised, looked around, and lightly nodded, such a processing plant, looking at the whole country. Absolutely top notch as well.

Seeing the CNC machine tool not far away that was making pre-processing preparations, and seeing the dozen or so semi-finished products of the ninth-level compressor disc next to the machine tool, Tang Jianyì sped up his pace.

When he came to the machine tool and saw the dozen or so semi-finished parts next to him, Tang Jian seemed to have found an abnormality. Frowning slightly, he picked up one and looked at it carefully.

Then he picked up the processing technology card on the table, looked at it slightly, and Tang Jian said: "Mr. Li, how has this processing technology all changed, and there is." Before the finishing process, you obviously arranged the heat treatment process. ”

If it weren't for the fact that the flame tube processing of Tianfeng Technology was perfect last time, which greatly changed Tang Jian's impression, Tang Jianyi might have gone crazy, but. The dissatisfaction is still written on the face, which makes people see it at a glance.

Li Tianfeng couldn't help but shake his head gently, Tang Jian yì is such a character, what is in his heart, what is shown on his face, will not be twisted and turned.

Don't mind, Li Tianfeng smiled slightly and said, "Expert Tang, we will tear down the entire processing process and start over." It did not adopt the processing process of factory E. ”

"Tear it down and start over, how can this be?"

Obviously, Tang Jian yì means. This is a military part, how can the process be changed if it is changed, this must be strictly controlled.

Li Tianfeng said with a smile: "Expert Tang, the new processing process compiled by our Tianfeng Technology was clearly written in the technical agreement at the beginning, and we have this right." ”

Tang Jianyì didn't want to dwell on this issue either. Nod your head, change it, change it. Tang Jian smiled wryly and said, "Mr. Li." After years of hard work, we didn't think that it would be with you. It became worthless, and our original processing technology was not used at all. ”

Turbofan B engine, in the eighties of the last century from the old Maozi technology introduction, trial production in the E factory, at the beginning, the processing of the compressor wheel disc is one of the process problems, after years of process verification, many times of process technology research, there is today's E factory that set of processing technology.

I didn't think about it, after so many years of hard work, Li Tianfeng said that they would push it all over again, and they didn't use their own processing technology at all.

Back then, Tang Jianyì was still young, he was the backbone of the process technology of the E factory, and participated in a number of technological breakthroughs in turbofan B, including the process public relations of compressor wheel processing.

"Mr. Li, can you introduce some of the processing technology you use?"

Li Tianfeng did not shirk and introduced: "The basic process route is still not re-changed, or rough machining, semi-finishing, increased annealing treatment, and then there are several finishing processes, followed by broaching and tenoning, machining precision holes and other processes. ”

Tang Jianyì thought in his heart, there is no improvement, it is still the same as our original processing technology.

Li Tianfeng seemed to see what Tang Jian was thinking, and continued with a slight smile: "Although the process route has not been changed, we have optimized the process parameters, some processing fixtures, and tools have been improved, and a vacuum annealing process has been added before finishing turning. ”

Vacuum annealing!

Li Tianfeng nodded, "It is vacuum annealing, because after the rough machining and semi-finishing of the parts, a large number of metal materials are cut, and there is a large amount of stress inside the parts, and the purpose of vacuum annealing is to eliminate the residual stress inside the parts." ”

Tang Jian said: "Mr. Li, no, we have also done vacuum annealing before, but the effect is not good, so we canceled it." ”

Li Tianfeng smiled mysteriously, and thought in his heart, the effect is not good, it is because your annealing parameters are wrong, such as temperature, heat preservation time, cooling time and speed, etc., these are not well grasped, these parameters are not suitable, and the natural effect is not good.

However, Li Tianfeng did not elaborate on these things, and if the technology is secret, it must still be kept secret.

The two exchanged ideas, and Tang Jianyi saw that Li Tianfeng was right, reasonable, and couldn't help but look forward to it a little in his heart, and hurriedly said: "Mr. Li, then let's carry out the first finishing process." ”

Li Tianfeng nodded, seeing that the relevant preparations for the first fine car had been almost carried out, he couldn't help waving his hand, ready to tell the workers to start processing.

As if he had discovered a new world, Tang immediately shouted: "Stop, stop, stop!! ”

After shouting to stop, he hurriedly took two steps forward, carefully looked at the number of car fixtures that had been installed on the machine tool, and said strangely: "Mr. Li, your number of car clamps is very special!" ”

Li Tianfeng said: "Of course, this is a number of car clamps specially designed for the wheel disc of the ninth-level compressor, which adopts a double-support and double-compression scheme, which can effectively prevent the deformation of parts in the processing process. ”

Tang Jianyì is a technical expert in the end, just a little bit of it, and immediately discovered the ingenuity of the design of this fixture, while looking carefully, he nodded again and again, and muttered in his mouth: "I didn't think about it, I didn't think about it, I didn't think about it, I actually designed it so ingeniously, I can think of it, wonderful, wonderful!" ”

"Mr. Li, after seeing your double-supported double-pressed clamp, I have gained a lot, and you have taught me a good lesson." Tang Jian said with emotion.

"Where, where." Li Tianfeng said politely.

After reading this number of car fixtures, Tang Jianyì's eyes stayed on the CNC turning tools that had been installed, and when he saw the installed blades on the turning tools, Tang Jianyì couldn't understand it again.

Seeing Tang Jian's appearance, Li Tianfeng couldn't help but smile slightly, this fine car, on the surface, there is nothing, but Li Tianfeng personally checked it, and it took a lot of thought, enough for Tang Jianyi to study hard.

After looking at it, Tang Jian said: "Mr. Li, no, how do you use 35-degree turning tools to fine turn spoke plates, you should use 80-degree turning tools!" ”

Li Tianfeng said: "Expert Tang, because the angle of the 80-degree turning tool is large, it is not sharp enough, and this titanium alloy is different from ordinary metal materials, it is more sticky and easy to surface harden, and it is not appropriate to use 80-degree turning tools, so the sharpest 35-degree turning tools must be used." ”

"That's it!" Tang Jian yì thoughtfully. Of course, Tang Jianyì knows that this grade of titanium alloy is prone to surface hardening when it is processed, and if the depth of cut is less than 0.1 mm, it will not be able to enter at all, while other metal materials rarely have such a situation.

After thinking about this, Tang Jianyì nodded, and gradually admired Li Tianfeng, at this time, Tang Jianyì already knew that Li Tianfeng's technological level was completely above his own.

"Soup expert, can you process it?"

"Of course, I'm interested now, I hope not to disappoint me, I want to take a good look, see for myself, after using such a processing technology, what will be the processing quality of this ninth-stage compressor wheel."

"Okay, let's start processing!" Li Tianfeng waved his hand.

The worker master who has been waiting for the processing preparation for a long time immediately closed the safety door of the CNC machine tool, gently pressed the machine tool start button, and suddenly, the machine tool worked, the white coolant sprayed on the parts, the spindle of the machine tool began to rotate, the machine tool holder moved quickly and positioned, and the first turning tool "hissed" with a soft sound, and quickly cut into the part.

Through the glass of the safety door of the machine, you can see that the parts in the machine are easily turned by sharp turning tools, and the beautiful metal chips are turned off one by one, and the machine makes a steady beep.

Tang Jianyì took out his reading glasses, wiped them, and then stepped forward, sticking to the safety door of the machine tool, and looked at it seriously, watching it with relish, as if he was watching a wonderful show, seeing this, Li Tianfeng smiled slightly, and thought in his heart, Tang Jianyì is really an idiot.

An idiot who is very obsessed with machining, seeing such a new processing technology, Tang Jianyì really seems to be obsessed, and has been leaning in front of the machine tool, sticking to the glass of the safety door, looking at the processing inside the machine tool, fascinated.

Li Tianfeng looked at his watch and knew that this finishing process took thirty-six minutes, and Li Tianfeng did not leave, just next to the machine tool, waiting patiently.

Minutes passed, minutes passed, and after more than 30 minutes, the machine began to retract, and the rotating spindle gradually stopped, and the processing was about to be completed.

…………

Today's four watches, the third one is sent! (To be continued)

R640