(If you want to hear more of your voices and receive more of your opinions, search for the WeChat public account "qdread" now and pay attention to it to give more support to "Aviation Dream"!) With the start of formal processing, the milky white coolant stirs up bursts of water, and a large amount of coolant is sprayed on the parts from the coolant nozzle of the machine tool, and the coolant can fully cool the parts and prevent the parts from heating up during the machining process.

The spindle of the machine tool moves quickly and is positioned, and the first CNC milling cutter rotates rapidly, cutting the part tangentially, and a large number of metal chips are cut off.

"Li Gong, with such a high cutting speed, will there be a problem?" He Wei is an experienced worker, but also a senior technician and a national skill expert, He Wei is also the first time to see such a high cutting speed, He Wei is worried, in case the tool can not stand such a high cutting speed, in case there is a knife collapse phenomenon in the processing process, it will be bad.

This is a very critical part, the material is still imported, and there are only two blanks left, this, in case of a little accident, this, this ......

He Wei didn't dare to think about it, and looked at Li Tianfeng with a worried face, Li Tianfeng at this time had a calm face, and looked at the processing situation in the CNC machining center intently.

The processing of the blade disc is often a long process, often dozens of hours in a row, or even hundreds of hours, He Wei does not know how long his worries will last, if he keeps worrying about it, it is really a torment.

Time passed minute by minute, the machine began to automatically change the tool, and continued to process at high speed after replacing a new knife, Li Tianfeng looked at the processing situation, and then looked at the metal chips discharged from the chip chute of the machine tool, Li Tianfeng nodded.

Seeing that Li Tianfeng was carefully looking at the metal shavings milled from the parts, He Wei thought in his heart, Li Gong would not really be able to understand these.

Looking at the processing of parts and the wear of tools from the metal chips generated by processing, it is not impossible, but this requires rich experience, which is a hard skill, and even experienced skilled workers like He Wei can only see a little bit of skin.

Not far away, several people walked briskly towards here, and in the middle was Liu Qingshan, the deputy chief engineer of Plant E, accompanied by Peng Xuehai and Chen Xiangchun on both sides.

"Hello three leaders!"

Seeing the three of them walking in front of him, Li Tianfeng greeted him without humility, and the three of them nodded slightly when they saw Li Tianfeng.

Liu Qingshan was most concerned about the processing situation, and immediately asked, "How is the situation?" ”

Li Tianfeng said: "Mr. Liu, it is normal to complete the processing of the first part at seven or eight o'clock in the evening." ”

"So fast?" Liu Qingshan's face was stunned, and he looked at Li Tianfeng with a little disbelief. The maximum outer diameter of the blade disc of the first stage compressor of vortex C is about 160 mm, and it generally takes dozens of hours to mill all the blades in a blade disc of such a size, and now Li Tianfeng said that it can be processed at night.

Compared with foreign advanced countries, there are still a lot of gaps in the five-coordinate CNC milling processing of E factory, the processing efficiency is only one-third or even lower than the foreign advanced level, and the quality and processing accuracy are also worse than a grade.

Liu Qingshan naturally knows the situation and level of Plant E, and Liu Qingshan estimates that the first-stage compressor disc (that is, the integral blade disc) of vortex shaft C cannot be processed without three or five days of effort.

Li Tianfeng said: "The whole processing process of the integral blade disc is nine hours and sixteen minutes, and there is no problem with the first piece of processing at seven or eight o'clock in the evening. ”

"Nine hours and sixteen minutes!"

Not only Liu Qingshan, but also Chen Xiangchun next to him was also stunned, thinking in his heart, there is such a fast processing speed. In China, such processing efficiency, this is the rhythm of the sky, in terms of processing efficiency, it has increased by more than three times, and may not be more.

Seeing everyone's stunned expressions, Li Tianfeng couldn't help but smile slightly, and thought in his heart, if it weren't for the alloy tools used a little reluctantly, the processing equipment could only be regarded as the international second-rate, otherwise, the processing efficiency could be increased by more than 30%.

However, this speed is enough to blind many people's eyes.

As the deputy chief engineer and chief technologist of Factory E, at this time, Liu Qingshan stared intently at the parts being processed through the glass safety door of the CNC machining center.

Seeing that the processing speed is fast, the cutting is flying, the coolant is splashing, and the low buzzing sound produced by the processing is very stable, Liu Qingshan knows that the processing is very normal and very stable.

"Xiao Li, not bad, not bad."

After watching it for a long time, Liu Qingshan, who was happy, happily patted Li Tianfeng's shoulder, and Peng Xuehai next to him also gave Li Tianfeng an approving look.

A few people watched the machining center for half an hour before leaving, and when they left, Liu Qingshan said again: "I will definitely come back in the evening, I want to take a look at the processed parts." ”

……

Seven o'clock in the evening.

After dinner, Li Tianfeng has been waiting next to the machine tool, the CNC machining center is still processing parts according to the CNC program, at this time, the parts on the machine tool have been basically formed, through the glass safety door can clearly see the parts on the blades one by one.

"Li Gong, it will be finished in more than twenty minutes." He Wei's tone was full of excitement.

Hearing this, Li Tianfeng nodded and said, "The processing situation is very good, within the expected range." ”

Time passed minute by minute, the processing gradually approached the end, twenty minutes passed quickly, the machine tool spindle began to retract, only to see the machine tool spindle quickly lifted, the rapid rotation of the milling cutter left the processed parts, the speed slowly decreased and soon stopped.

Soon, the safety door of the machine tool opened, and the parts that had been processed were lying quietly on the workbench of the machine tool, and the shiny parts were shining with metallic luster and looked very beautiful.

He Wei couldn't wait for a long time, and took a high-pressure air gun to blow the metal shavings near the parts clean, and then the soft brush cleaned the parts, looking at this beautiful part, He Wei's hands trembled slightly.

"Li Gong, do you want to disassemble the parts now?"

Li Tianfeng thought for a while, "Wait for the time being, Mr. Liu will come over in person later." ”

He Wei patted his head gently, "Look at me, I was so happy just now that I actually forgot about it." ”

Liu Qingshan came quickly, and there were several people with Liu Qingshan, including not only experts from the Engineering Technology Department of Plant E, but also several directors of the precision machining center, such as Peng Xuehai, Chen Xiangchun and so on.

Seeing Li Tianfeng and He Wei at the door of CNC machining, the machine tool seemed to have stopped, the safety door of the machine tool was open, and it was not clear to see the situation inside the machine tool for the time being.

"How's it going?" Still far away, Liu Qingshan couldn't wait to ask.

Li Tianfeng said: "Mr. Liu, the first part has been processed, and it has not been disassembled on the machine tool workbench. ”

Hearing a qiē shun lì, Liu Qingshan's high heart was invisibly put down, a few steps to the front of the CNC machine tool, at a glance to see the machine tool workbench has been processed parts, suddenly, Liu Qingshan burst of happiness, the mood is happy.

"Quick, take the parts down, I'm going to take a look." Liu Qingshan said loudly.

At this time, there were already a lot of people around the machine tool, many of whom came with Liu Qingshan just now, and a few were workers at nearby stations.

He Wei skillfully disassembled the parts, blew the parts clean with a high-pressure air gun, and then gently placed the parts on the workbench next to the machine tool.

After the parts are processed, they are very beautiful, with the unique metallic luster of titanium alloy, shiny, and in addition, the blades are very beautiful, which attracts everyone's attention at once.

It's beautiful!

Liu Qingshan personally picked up this part, looked at it and looked at it, and couldn't put it down, after looking at it, Liu Qingshan said: "Do you see it, the parts just processed actually have almost no burrs, and the surface roughness is very good, very bright, and the roughness is at least below 0.8, it's unbelievable." ”

In the past, the surface roughness of the blade disc processed by the E factory through the guò five-coordinate machining center could not meet the design requirements, and it was often necessary to arrange a fitter polishing process after processing these blades, which was to manually polish the blades one by one.

The roughness of the blade surface is strictly required, and if the surface is too rough, it will severely affect the performance of the whole engine.

Artificial polishing of the blade surface, that is completely helpless, because the CNC milling of the blade surface roughness can not meet the requirements of the last resort, manual polishing, by virtue of the experience and feel, even the most experienced, the most skilled skilled workers will inevitably affect the contour and size of the blade.

The accuracy requirements of the blades on the compressor plate are very high, the contour is basically within 0.05, and the size tolerance is only a few wires.

And this machined part, the blade is very smooth, where there is a rough feeling, fully meet the design requirements, the surface roughness is absolutely qualified.

"Everybody's coming to see, everybody's coming to see." Liu Qingshan put the first-stage compressor blade disc in his hand on the table, and shouted loudly for everyone to take a look.

Everyone immediately gathered around, Li Tianfeng saw this, took the initiative to let go, and suddenly, Li Tianfeng was squeezed to the side, everyone nodded with interest, and watched. (My novel "Aviation Dream" will have more fresh content on the official WeChat platform, and there will also be a 100% lottery gift for everyone!) Open WeChat now, click on the "+" sign in the upper right corner to "add friends", search for the official account "qdread" and follow, hurry up! )