Li Tianfeng personally went to Factory E, and the parts sent were of good quality, and he went to the offices of Cheng Gang, Peng Xuehai, Yang Xianfeng and others to sit down, and the effect was still good.

Today, the company's double-row truck has been running several times, and several batches of parts have been shipped from the precision machining center of factory E, in addition to several drawing numbers of the turboprop B compressor wheel, several batches of blank parts, and several batches of parts of the turbine disc promised by Yang Xianfeng.

These parts look very gratifying, neatly placed in the incoming area of the No. 1 plant, packed in open wooden boxes, each wooden box contains three or five parts, occupying a large area.

Li Tianfeng came to the No. 1 workshop in person, and saw that Zhang Can was guiding and arranging people to prepare for the processing of these blank parts, at present, due to the shortage of personnel, the leadership structure of the No. 1 workshop is not complete, the workshop director, the production director are temporarily vacant, everything is Zhang Can, the technical director, is doing, however, this situation should be solved soon.

"Mr. Li, it's really gratifying to have so many rough parts!" Zhang Can rubbed his hands and said happily.

Li Tianfeng also nodded, more satisfied, so many parts, the processing cost is at least one or two million, at present, for Tianfeng Technology Company, it is also a "big business".

"Director Zhang, these parts that have come over, there are two batches of blank parts in the fifth-stage roulette of the compressor, you must do a good job of distinguishing them, and don't mix the parts." Li Tianfeng admonished.

Last time, when Zhou Jinhai was processing the first-stage roulette of the compressor, he did not transfer the furnace batch number and the part batch number according to the process requirements, and there was almost a big thing.

Zhang Can naturally didn't dare to slack off, and immediately said: "Mr. Li, rest assured, I will definitely arrange it, I will arrange the processing of the two batches of parts with the same drawing number in batches, and I will definitely not mix the two batches of parts together for processing." ”

In this way, batch processing is naturally the best, the risk is the lowest, and there will be no mixed batch, Li Tianfeng also nodded and agreed.

The so-called mixed batch of parts refers to two different furnace batch numbers with the same drawing number, parts with batch numbers, and the parts with batch numbers are confused in the processing process, and it is impossible to distinguish which part is which batch, which is a strict quality accident, and the way to deal with it is to scrap all the parts in two batches.

The processing process of aero engine parts is very rigorous, and such a thing is absolutely not allowed to happen, and Li Tianfeng naturally does not want such a thing to happen in his Tianfeng Technology Company.

I took a look around in the No. 1 workshop and looked at it, most of the machine tools and equipment had been started, making bursts of pleasant beeping sounds, Li Tianfeng nodded with satisfaction, at least in the past ten days and half a month, I have rice in the pot.

When passing by Zhou Jinhai's Dalian CNC machine tool, it happened that Zhou Jinhai was holding a vibrating pen to mark the batch number of the furnace and the batch number of the part on the part.

Seeing Li Tianfeng coming, Zhou Jinhai immediately stopped what he was doing and said uprightly: "Mr. Li is good!" ”

Nodding slightly, Li Tianfeng felt that Zhou Jinhai had changed a lot after the last incident, his attitude was serious, he operated in strict accordance with the technical requirements, and the processing quality of the parts seemed to be good.

"Master Zhou, that's good." Li Tianfeng said with a smile.

Zhou Jinhai said: "Today we started processing new parts, rough machining of the first stage turbine disc, and the second part on the machine tool. ”

The turbine disc of the turboprop B engine is a high-temperature alloy material, forging blanks, the machining allowance of the blank parts is very large, and the cutting performance of the high-temperature alloy is general, under normal circumstances, the tool wears out quickly, and in general, the processing cost is relatively high.

CNC turning blades alone, a piece is generally tens of yuan, and the quality is a little better than hundreds of yuan. Of course, the inferior digital turning blade is very cheap, a few dollars, more than a dozen yuan, but such a digital turning blade cannot be used to process aero engine parts made of superalloy materials.

Li Tianfeng looked at the first part that had been processed in this process, and saw that the surface processing of the parts was in good condition, the batch number of the part furnace, and the neatness of the parts batch, Li Tianfeng asked: "Master Zhou, how is the processing quality?" ”

Zhou Jinhai replied: "The quality is good, the size of the first part is completely qualified, and now the second part has also begun to be processed." ”

CNC machining is different from ordinary lathe processing, CNC machining generally as long as the first part is qualified, the subsequent parts will all be qualified, because the processing is controlled by the processing CNC program, as long as the operator does not make mistakes, find the right parts, the right knife, there will generally be quality problems.

"Mr. Li, it's just that the processing of this superalloy is much more difficult and less efficient than yesterday's 1Cr18Ni9Ti, a stainless steel material."

Li Tianfeng nodded, thinking in his heart, the two materials are completely different, and the processing efficiency will definitely be very different.

Li Tianfeng is very familiar with the superalloy material of turboprop B turbine disc, and the selected processing parameters, including feed volume, turning speed, and self-confidence in the tooling path, are the most reasonable, and the processing economic benefits and parts processing quality are the best.

Li Tianfeng said: "This is the turning of high-temperature alloy materials, in strict accordance with the parameters of the process regulations, such an efficiency is relatively high." ”

Zhou Jin also hurriedly said: "Certainly, it must be processed strictly according to the process parameters." ”

Li Tianfeng nodded, and after personally telling Zhou Jinhai a few words, Li Tianfeng was ready to take another look and inspect again.

There is a process technician, a quality control officer, and an inspector at the scene, but Li Tianfeng still does not dare to relax in his heart, because these dozens of workers are all recruited from other machinery manufacturing enterprises, and they are in the run-in period, far from forming a strong team of skilled workers.

Now it can only be regarded as the initial stage, Li Tianfeng naturally has to be careful, careful, careful, cautious, cautious, cautious.

Be careful to be able to walk the ship for ten thousand years!

Fortunately, Li Tianfeng was cautious enough, otherwise, something would really happen again.

Li Tianfeng has rich experience in machining, and his technical level is naturally top-notch, and his vision is naturally very vicious.

The operator of this CNC lathe is relatively young, Li Tianfeng seems to have an impression of him, Lu Hailong, who used to be a CNC lathe worker in an individual and private machinery processing factory, has five years of operating experience, at the beginning, Li Tianfeng also took a fancy to his five years of CNC lathe operation experience.

This CNC lathe is also processing one of the CNC turning processes of the turboprop B turbine disk, Lu Hailong also shows the regular moment, if it is an ordinary person, it can really be seen that there will be any problems, but who is Li Tianfeng, Li Tianfeng quickly saw the problem, please the problem is still more strict.

The processing sound is obviously wrong, a bit of a harsh grinding sound.

Li Tianfeng's face changed slightly, walked over quickly, and asked in a deep voice: "How can it be this kind of voice, is it not that the CNC turning blade has not been replaced according to the process requirements?" ”

Normal processing, the sound is definitely not like this, sharp CNC blade turning parts, that is moisturizing things silently, the sound is very slight, very stable dìng, where will it be.

Seeing that it was Li Tianfeng, his top boss, Lu Hailong was a little nervous in his heart, and said with a snort: "Mr. Li, I see that the blade is not very worn, and I am ready to make do with another part." ”

In the past, before coming to Tianfeng Technology Company, Long Hailong did this, thinking that as long as the blade was still matched, he would continue to process, and this bad habit was also brought here.

This is absolutely not allowed, this is aero engine parts processing, a qiē must be operated in strict accordance with the process regulations, the process regulations say above, when to replace the blade, you must replace the blade, not need you to make your own claim.

Li Tianfeng was a little annoyed in his heart, and said in a deep voice: "Who wants you to do this, we have repeatedly emphasized that we must operate in strict accordance with the process regulations, and who is responsible for any problems." ”

The price of the turbine disc is much more expensive than the compressor wheel, such a turbine disc blank will cost more than 20,000 yuan, and the price will be at least 40,000 or 50,000 yuan if it is processed into a finished product.

Li Tianfeng was about to ask Lu Hailong to suspend processing, replace the blades that had been worn out badly, and then reprocess the tools.

Suddenly, a piercing and sharp sound sounded, and even the machine tool shook slightly, seeing this, Li Tianfeng knew that something must have happened, it must be a digging knife.

"Cutter" is a professional term, which refers to the machining tool in the machining process, for some reason, it may be that the tool is worn, it may be that the machining allowance exceeds the limit, etc., the processing tool digs below the processing surface of the part, forming a quality defect.

In general, the digging knife is fatal and often leads to the scrapping of the processing of the parts.

After all, Lu Hailong has been engaged in the car industry for several years, and his processing experience is quite rich, seeing this appearance, his face is also changing, and even a little pale, Lu Hailong knows that nine times out of ten there is a phenomenon of digging knives.

Fortunately, Lu Hailong was not frightened, and his reaction was quite fast, and he slapped the emergency stop button at the airport.

As soon as the emergency stop button is pressed, the machine tool will stop working urgently, and in case of any special circumstances, before figuring out the situation, the wisest thing is to quickly press the emergency stop button of the machine tool.

The machine tool stopped urgently, and Li Tianfeng's heart was also suspended, and he immediately said eagerly: "Hurry, hurry, open the safety door of the machine tool to see the situation of the parts." ”

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