Tang Zhengwang said that it is also the truth, the four major domestic OEMs adopt a processing technology similar to just now, that is, after the inner circle of the part is processed to the ultimate design size, it is filled with paraffin wax, and the outer surface is processed after the paraffin is completely cooled.

However, there is a big problem with this that when the paraffin wax is cooled and compressed, a large gap will be formed between the parts, at least a few millimeters, so that the parts will still be deformed when the outer circle of the parts is processed, resulting in the scrapping of many parts, and this process has been abandoned.

Instead, it adopts the process of turning the inner circle and the outer circle of the parts over and over again, little by little, layer by layer, but this process, the processing quality of the parts has been unstable, and the pass rate has been almost zero, which also makes Tang Zhengwang and other experts hurt their heads.

Seeing the suspicion in Liu Lao's eyes, Yang Jie smiled and said, "Don't worry, everyone, just keep looking down." ”

Tang Zhengwang wanted to say something more, but thinking that Yonghan Aviation Power Technology Company was this Yang Shao's private company, he was not worried about the scrapping of parts, what was he worried about, and at the same time he wanted to see what other measures this company had that he didn't know.

At this time, the two workers vigilously poured wax into the parts installed on the fixture, and the two of them poured very carefully, and after a few minutes, the parts were filled with paraffin.

Yang Jie took a look at the time, it was almost 12 o'clock at noon, that is, the time when the workers left work, and said to Liu Jianqing with a smile: "Liu Lao, it takes time for the paraffin wax to cool down, why don't we eat a working meal and come back when we go to work in the afternoon?"

Liu Jianqing nodded: "Okay, let's have a working meal and come back in the afternoon." ”

Everyone walked outside the office building, more than a dozen special versions of the Junjue luxury car were waiting there, and after everyone got into the car, the convoy immediately drove out of Yonghan Aviation Power Technology Company, along a smooth cement road, heading into the distance.

Liu Jianqing smiled and said to Yang Jie beside him: "Look at this posture, it's not so simple as eating a simple working meal. ”

Yang Jie said with a smile on his face: "Old Liu, you don't come here easily as guests, you can't be too cold to entertain you." ”

"You!" Liu Jianqing pointed at Yang Jie with a smile: "You kid has become a rich man now, and I will cut off the tail of capitalism this time......"

He and Yang Jie both laughed.

In the afternoon, Yang Jie accompanied Liu Jianqing and others to the production workshop of Yonghan Aviation Power Technology Company again.

The second finishing process of the flame cylinder is about to be carried out, and the senior technician who is preparing for the processing is doing the pre-processing preparation work at this time, and the fixture has been placed next to the machine tool, and it can be installed on the machine after everyone has seen it.

The paraffin wax in the inner cavity of the flame cylinder to be machined installed by this CNC fixture has been completely cooled and hardened.

Tang Zhengwang squatted down and looked carefully.

After a few glances, he exclaimed, "This ...... This...... This maybe, how can there be no gap?"

This, this is not scientific!

At this time, the part is filled with paraffin wax and there is no gap between the inner cavity of the flame cylinder, and the two are very tightly combined!

At first glance, he thought he was wrong, but after a closer look, he concluded that he was not mistaken, and his head turned wildly: how did they do it?

Liu Jianqing also squatted down and looked at it carefully, and then said to Yang Jie: "How did you do it?"

Yang Jie and Wang Yonglin exchanged glances, and said with a smile: "Liu Lao, this kind of paraffin wax is mixed with a special low melting point glue, which is prepared by Mr. Wang himself, even if this kind of thing is cooled and hardened, it will not have obvious compressibility, and it will be closely combined with the parts." ”

Tang Zhengwang took a little paraffin wax with his fingernails, looked at it carefully, and put it under his nose and sniffed it, "It's really different from ordinary paraffin." ”

He asked curiously: "What kind of low-melting point glue is this, and what kind of ratio is it boiled into?"

Yang Jie and Wang Yonglin both smiled and did not make a sound.

Tang Zhengwang immediately realized that this was the process secret of Yonghan Aviation Power Company, and it was the trade secret of other companies, and it was enough to tell them that paraffin wax was mixed with melting point glue.

Liu Jianqing can also understand that Yang Jie himself spends so much money on this every year, and it is impossible for him to let people say these process secrets like this.

"Xiaojie, let them start processing. Liu Jianqing said.

The senior technician then skillfully installed the parts and fixtures on the CNC lathe, and then began to install one by one CNC tools, all of which were new.

"These tools are also produced by the Machine Tool Research Institute itself?" Zhang Kelong asked.

Yang Jie said with a smile: "Yes, this is a non-standard tool specially designed for processing the few rounds of precision narrow grooves outside the flame tube, which is produced by the Machine Tool Research Institute with special alloy steel, which is very expensive." ”

Liu Jianqing smiled: "It's nothing expensive, the most important thing is that your machine tool research institute can produce it." ”

Yang Jie and the others also laughed.

Now the paraffin filling is very good, and this good quality special tool has been specially designed, and everyone seems to have seen the hope of success.

Tang Zhengwang also had a smile on his face.

After the senior technician installed the tools, inspected them, and then completed the work of aligning the parts and aligning the knives, everything was in an orderly manner, and Tang Zhengwang nodded from time to time when he saw this scene.

"Yang Shao, Mr. Wang, I think I should retract what I just said, there is a very high possibility that you can process qualified parts this time. ”

Tang Zhengwang said solemnly to Yang Jie and Wang Yonglin.

Wang Yonglin smiled, it was not easy for such a stubborn skill expert as Tang Zhengwang to admit this!

Everything stops, and preparations begin to be officially processed.

The senior technician glanced at Yang Jie and Wang Yonglin at this time, obviously asking for instructions on whether they could start.

Wang Yonglin nodded.

The senior technician then gently pressed the green machine start button and the machine began to work......

Through the glass of the safety door of the machine tool, you can see the processing situation inside, only to see that under the spray of the coolant of the white flowers, the sharp turning tool easily cuts off the iron filings, this sound is extremely pleasant in the eyes of Tang Zhengwang and others.

It takes more than an hour to process, but at such a critical moment, Liu Jianqing and others have no intention of leaving the processing site, and Yang Jie also asked Liu Jianqing to bring a chair with soft cushions to Liu Lao to sit down.

After all, Liu Lao is old, and he is very tired when he stands for a long time.

Everyone waited patiently next to the CNC machine tool and took a look at the processing situation in the machine tool from time to time.

There was a steady and very slight beeping sound from inside the machine, and everything was working properly.

After more than an hour, the machine began to retract, the machining was about to be completed, and everyone became excited, ready to witness this exciting moment.

The machine tool is completely withdrawn and then stopped, which also means that the process is completed, whether it is good or bad, you can see the real chapter immediately.

Seeing so many big people looking at him, this senior technician was also quite excited, he never thought that he would become such a focus today.

He straightened his chest, stepped forward and opened the safety door of the machine tool, and the processed parts were exposed in front of everyone's eyes, and when he used the air gun to blow the parts carefully, the coolant on them was blown clean, and the exposed parts looked very bright and seemed to be a little dazzling.

Everyone was eager for this senior technician to move faster, immediately unload the parts, and hurry up to measure whether the parts are qualified.

"Hurry up, hurry up. Liu Jianqing also urged.

This senior technician is also the beginning of the disassembly of parts, so the disassembly speed is very fast, and as soon as the parts are disassembled from the machine tool, everyone can't wait to surround them, as if they are watching a rare treasure.

The parts are very brightly processed, without the slightest burr, and when touched by hand, as if caressing a piece of silk, it is very smooth and comfortable, and it almost tames these members of the expert group by its appearance.

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