After the processing was completed, the machine stopped, Tang Jianyì personally opened the safety door of the machine tool, went in, looked at it carefully, and touched the parts with coolant with his hands, the expression was like appreciating an art treasure.

Seeing this, Li Tianfeng sweated profusely, and Tang Jian was obsessed, too obsessed!

The worker master who operated the number of cars next to him couldn't help but glance at Tang Jianyì more, and thought in his heart, there are still such people in the world, this obsession with Cheng Dù, it seems that he has already entered the bones, and he has completely fallen into it.

"Mr. Li, tsk, look at the surface processing quality of this part, how good, how smooth, how comfortable it feels, just like touching a batch of silk." Tang Jian yì said.

Titanium alloy processing, if the processing parameters are not right, or the tool selection is wrong, the surface processing quality will be very bad, Tang Jianyì remembers vividly, when the turbofan B was introduced, the first time the compressor wheel of this titanium alloy material was processed, it was called a bad.

Because there was no experience at the beginning, there were no parameters to check, a qiē could only cross the river by feeling the stones, and a qiē relied on groping, because the processing parameters were not right, the compressor wheel disc that was processed at the beginning was not only very rough on the surface, but also the parts were strictly deformed, and the parts were scrapped one after another without being processed to the end.

Tang Jian yì is very experienced, as soon as he looks at the smooth surface of this part, he immediately knows that the parameters of the car and the selection of tools are very suitable, otherwise, there will be no such effect.

With some emotion, Tang Jianyì was obviously looking forward to it, took a few steps out of the way, and motioned to the worker master to disassemble the parts from the machine tool.

The parts are disassembled quickly, after they are disassembled. The parts were wiped clean with a clean rag, and then the worker picked up the measuring tool and began to self-check, measuring one size at a time, and Tang Jianyì stood next to him. With great interest, he personally watched the measurements of the master worker.

"This installation stop, you measure a few more points." Tang Jian yì instructed.

The mounting stop on the roulette wheel is an inner circle 4 mm deep, one circle, and 210 mm in diameter. The tolerance ± 0.02 is extremely demanding and very critical because it is an installation size.

Tang Jian yì is experienced, and the inner circle size with very small tolerances like this. Generally, several points need to be measured, because in this case, once the part is deformed, that is to say, the inner circle is not a standard circle, and if the zài ellipse is stored, it can be measured.

According to the words of the worker, the master took the measuring tool and measured a total of eight points evenly, and the measured value of each point was almost the same. This means that this mounting stop is a standard circle with almost no deformation.

This. It's impossible!

Tang Jianyì was completely shocked, when the E factory was processing in the past, this installation stop had a certain ellipse anyway, and each point was measured, and the size of each measurement basically had one or two wires, or even two or three wires. And now this part, eight points down. Little has changed.

Hell yes!

Tang Jian looked at Li Tianfeng in astonishment, and Li Tianfeng seemed to be confident in his parts. He smiled slightly and said, "Expert Tang, this is normal. ”

Very normal!

Tang Jianyi was stunned, and couldn't digest Li Tianfeng's words just now, and after a long time, Tang Jianyi sighed with emotion, and glanced at Li Tianfeng with admiration, "Mr. Li, it's really the back waves of the Yangtze River pushing the front waves, I am completely convinced today, Mr. Li, you are amazing." ”

Li Tianfeng smiled happily, and was admired by Tang Jian, it was not simple.

"Continue to measure, measure all the dimensions of the process, and keep a record." Li Tianfeng instructed.

Each part is processed, measuring each size, this is the tradition of Tianfeng Technology, but also the basic requirements, the worker nodded his head, measured all the subsequent dimensions, and filled in the measured value record sheet of this process, and then signed his name.

If you sign your name, you will be responsible for your signature, which will have a sense of responsibility and traceability, and in the future, if you find a quality problem, you will know who it is.

Tang Jianyì took this measured value record sheet and looked at it, all the sizes were qualified, and some of the sizes were still medium difference, that is, some of the sizes that were always easy to be out of tolerance and unstable in processing in E factory were also qualified, as if after arriving at Tianfeng Technology Company, they all became honest and did not dare to be naughty.

Convinced, really convinced, not convinced!

Tang Jian said: "Mr. Li, you are one of the few people I really admire. ”

Li Tianfeng nodded and said with a smile: "Expert Tang, if you want to take a look at the processing of the follow-up number of cars, I can arrange it immediately." ”

The ninth level of wheel disc processing, the key is these two precision number of cars, the difficulty is also in this precision number of cars, of course, the back of the tongue and groove broaching, precision hole processing is not simple, but compared with these two precision turns, it is still slightly inferior.

Just now, seeing that the processing quality of the first number of cars of this part is so good, in addition to admiration, Tang Jianyì's interest also came up, "Mr. Li, this emotion is good, I really want to take a look at the processing of the next process, to see if the processing quality is also so good." ”

After speaking, Tang Jianyì said: "Mr. Li, if the processing quality of the second fine lathe is also very good, then you have almost opened a precedent and opened a new door, which has a wide range of reference significance for the processing of thin-walled parts of titanium alloy wheels in the future." ”

I didn't think about it, Tang Jianyì's evaluation is so high!

Li Tianfeng was in a good mood, and immediately arranged the processing of the second finishing car, and the preparation was not very complicated.

Of course, the processing is the part that has just completed a fine turning, and it is processed by another several cars next to it.

After forty minutes of processing, one qiē is very smooth, the second fine turning is completed, and the parts are disassembled from the CNC lathe, Tang Jian yì actually personally operated the knife, personally picked up the measuring tool, measured one size by one, and recorded the measured values of each size on the measured value record form in a regular and correct manner.

Li Tianfeng stood aside with interest, smiling, looking at Tang Jianyi's measurements. At the same time, Li Tianfeng also looked at the processed parts, which were very beautiful, very smooth, with excellent surface roughness, flashing with the unique metallic luster of titanium alloy.

All sizes are qualified!

Tang Jianyì was pleasantly surprised, "Mr. Li, I'll hit the end face of the spoke plate and the stop mouth beating again, if these two beats are also qualified, then this part is a completely qualified product, no, it is a very good quality product." ”

Li Tianfeng smiled and nodded, "Specialist Tang, then let's check these two beats and take a look?" ”

Tang Jianyì still handled the knife himself, personally took the parts, walked to the large marble platform not far away, placed the parts on the precision turntable used to check the beating, skillfully installed the dial gauge, and gently corrected the part datum.

Carefully press the gauge, use a dial gauge to check the runout of the mouth, and a dial gauge to check the end face of the spokes of the parts, do this qiē, Tang Jianyì gently, slowly rotate the precision turntable, at the same time, the eyes are staring at the two dial gauges.

Li Tianfeng's eyes also stayed on the two dial gauges, and saw that as Tang Jian gently turned the turntable, the beating of the two dial gauges was very slight, basically within two wires, and the quality of the parts was very good.

Tang Jian yì gently turned two times in a row, and after making sure that it was correct, Tang Jian yì stopped, and said with emotion: "Mr. Li, the problem of turbofan b compressor wheel wheel finishing processing has been solved by you, not bad, not bad, much better than us old guys." ”

Li Tianfeng was happy in his heart, and then said: "Expert Tang, there is still a wall thickness size of 2.1 ± 0.1 of the spoke plate that has not been measured, I remember that when I was in Factory E, this size was often processed out of tolerance. ”

Tang Jian nodded his head, because the parts are deformed by processing, the processing of this size has been of unstable quality, and the wall thickness of the spoke plate will be uneven for the same part, and the difference between thin places and thick places is often more than 10 threads.

"Where's the caliper? Measuring the wall thickness of this spoke plate requires a special caliper, give me a special caliper. Tang Jian looked around, but he didn't see the kind of special calipers he was familiar with, so he couldn't help but be a little anxious.

Li Tianfeng smiled, "Expert Tang, we don't have a special caliper here, but we do have a special micrometer." While speaking, Li Tianfeng smiled and gave Tang Jian a special micrometer.

Micrometer!

Tang Jian was stunned, and thought to himself that the tolerance of the wall thickness was ±0.1, could he use a micrometer? Calipers are sufficient. However, the micrometer is not impossible, so Tang Jianyì reluctantly took this special micrometer and measured it carefully, and he was very experienced, and measured more than a dozen points in different positions.

Impossible!

Tang Jian yì was completely shocked, and he also knew why Li Tianfeng gave himself a special micrometer instead of a caliper, because although the micrometer was a little troublesome to operate, the measurement accuracy was higher, and because of this high measurement accuracy, all the measurements made by Tang Jian Yì just now were very accurate.

After some measurement, Tang Jianyi was shocked to find that the wall thickness of the spoke plate of this part is basically a medium difference of 2.1 ± 0.1, and the wall thickness is very uniform, and the wall thickness difference measured by more than a dozen measurement points is within 0.02.

The difference in wall thickness is so small, how can a caliper measure it, no wonder a special micrometer is used.

Li Tianfeng saw that the wall thickness error of the parts was so small, and couldn't help but say: "Expert Tang, I don't need to make such a large tolerance when I see the wall thickness of the spoke plate, you see that the big tolerance of 0.1 ± is too loose, I have not understood that the wall thickness of the spoke plate is so important, it is related to the force bearing of the parts, how to give such a large tolerance in the design, I think the tolerance ± 0.05 is enough." ”

Suddenly, Tang Jianyì almost went crazy, his face turned red, and he held back for a long time before he said: "Mr. Li, you really don't have back pain when you stand and talk, the wall thickness of this spoke plate gives a tolerance of ±0.1, how much effort we have made, how much hardship, do you know?" ”

Hearing this, Li Tianfeng said in astonishment: "Tang Jian, are there twists and turns in the middle, and there is a story that can't be done?" ”

"Of course there is a story!"

……

Today's fourth watch, the fourth watch is completed!!

Ask for a monthly pass, and if you don't have a monthly pass, you can smash the recommended ticket, please everyone! (To be continued)

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