"Brother, what if you give people free repairs and lose money?" Duan Fang said with a worried face, she would not have thought of how low her brother's repair cost was.

"Don't be stupid, your brother, am I the kind of person who does that kind of loss-making business?" Duan Yun smiled at his sister and said, "It's no good, can the teacher help you publicize it in vain? ”

"When did you become so smart?" Duan Fang felt that his brother seemed to be a little different now......

"Your brother and I were originally wise and foolish, but you didn't find out. ”

"Bragging!" Duan Fang stuck out her little tongue when she heard this, put the money in her pocket and continued to cook.

Duan Yun glanced at the thirty yuan he had just arrived, and he was still quite happy in his heart.

But he also knows that refitting radios is just a small business, and if he wants to make a lot of money, he still needs to think of other ways.

In fact, in the past two days after his rebirth, Duan Yun also thought about a lot of things.

He obviously would not be willing to be an ordinary worker in a factory for the rest of his life, but judging from the current situation, doing business is a bit risky, speculation is a felony in this year, and even if he is willing to take risks, he does not have enough capital at hand.

As for taking the college entrance examination and going to university, he will not have the opportunity until at least next year, and Duan Yun has spent almost most of his life studying on campus, since he has lived again, he always has to change his way of living.

Now the safer way is to mix in the factory first, repair an electrical appliance part-time after work, and wait for more money on hand to make the next step.

Duan Yun even thought about opening an electronic or mechanical company by himself, with his technology, he could completely make products that were ahead of this era, but it was impossible to open a factory in the city at the moment, and it might be possible to be affiliated with a rural cooperative, but Duan Yun still needed to prepare a lot of money.

In short, the road should be walked little by little, and the meal should be eaten in one bite.

After the younger sister made lunch, the brother and sister sat down and ate together.

If it weren't for the fact that he was very hungry, Duan Yun really didn't want to eat such a meal, his appetite had already been raised by the brilliant cooking skills of his fiancée Luo Yanjun in his previous life, and the ordinary food was already difficult to see.

But thinking of his fiancée at this moment made Duan Yun a little sad, he still clearly remembered the scene when the two of them were hit by a speeding car at the same time, but he didn't know how she was now......

After the meal, after brushing the dishes and chopsticks with his sister, Duan Yun lay directly on his bed.

He has to work the night shift at night, and even if he is not sleepy now, he has to sleep for a while.

The night shift is the most tiring, from 12 o'clock in the evening to 8 o'clock in the morning, it is already 9 o'clock after changing clothes and going home, and when I sleep until noon after breakfast, I am called up for lunch...... I can't eat well and sleep well during the whole day, and no one can bear it for a long time.

But Duan Yun also understood that the secretary and the leader of the first workshop did not want to see him, and wanted to let him retreat, but since Duan Yun planned to engage in technical work, he would definitely not bow his head......

......

At half past eleven in the evening, Duan Yun took the lunch box that his mother had prepared for him, gently pushed open the door and walked out.

At night, the sky is quiet, the sky is full of stars, and the air is slightly cool.

The street leading to the factory gate is dimly lit, and some commuting workers can be seen passing by on their bicycles.

And when Duan Yun came to the door of the first workshop, Huang Haitao, the third squad leader in charge of the night shift this week, had been waiting for a long time.

Huang Haitao is in his early forties, a veteran lathe worker with more than 20 years of experience, a flexible mind, and a little close to the chief engineer.

"Ok, was late for a few minutes late. Huang Haitao glanced at the Shanghai plum watch on his wrist, patted him on the shoulder and said: "Go and change into work clothes, and I will arrange a master for you to take you." ”

"Okay. After Duan Yun finished speaking, he walked quickly to the locker room.

And when Duan Yun changed his clothes and walked out, there was already an old man with gray temples beside Huang Haitao at the door.

The old man was very cleanly dressed, and looked like he was sixty or seventy years old, but his eyes looked very energetic.

"Duan Yun, this master's name is Han Zhong, he will be your master in the future, Master Han is an old technician in our factory, he is retired and rehired, the level is high, you have to follow Master Han to study hard in the future!" Huang Haitao said to Duan Yun.

"Master Han is good. Duan Yun greeted Han Zhong with a smile.

"Hmm. Han Zhong didn't seem to have much interest in the new apprentice in front of him, but just responded with a blank expression.

The master of the factory in these years is not the honorific title shouted out by later generations, but the real master-apprentice relationship.

As the saying goes, a teacher for a day and a father for life, the master not only teaches skills to his apprentices, but also is equivalent to a backer for many new apprentices.

And the apprentice and the master to learn the arts, must be engrossed, do not be lazy, distracted, otherwise will be reprimanded, in private, the apprentice to the master should also be half of the old Tzu filial piety, the New Year's holiday to bring things to visit, and even will help the elderly to send the end.

Although some of the mentor-apprentice relationships are not so harmonious, this has generally been the case in these years.

"That's okay, Master Han, you will lead Xiao Duan to familiarize himself with the workstation first, and arrange tasks for him by the way. After Huang Haitao finished speaking, he turned around and walked to other workstations.

Duan Yun also followed behind Han Zhong and walked to the station on the side of the factory.

At this time, after the workers at the workstation saw Duan Yun, their eyes were a little weird.

Now Duan Yun is already a celebrity in the factory, and it is already known that he committed suicide for a female worker before, and even many young workers jokingly call him the number one 'love saint' of the Red Star Gear Factory behind his back.

Duan Yun naturally saw everyone's curiosity and ridicule for him, but he didn't care about it, after all, he was a middle-aged man with a mature mind in his previous life, and his thickness and experience were beyond the reach of the previous owner of this body.

At this time, Duan Yun's mind was temporarily on his new master, he was a little curious about this Han Zhong, you know, state-owned enterprises in the eighties rarely rehired this situation, usually the master retires, the apprentice is on top, there is no shortage of labor, and what high-end technology does the old man in front of him master, so that the factory will be rehired.

And when Duan Yun followed Han Zhong to his workstation, he suddenly realized.

It turned out that the lathe used by Han Zhong was the former SL lathe made in 1952 that he saw during the day!

Even in the 80s, this kind of old-fashioned lathe was almost eliminated in China, and it looked completely an old antique.

In fact, the Red Star Gear Factory wanted to scrap this machine tool two years earlier, but due to the increasing number of orders from the factory and mine, the production task of the Red Star Gear Factory was large, and all the workshop leaders finally decided to continue to use this old machine tool, and as one of the few old employees in the factory who could play with this lathe, Han Zhong was finally retired and rehired, and continued to exert his residual heat for the factory with this machine tool......

"You can just watch from the sidelines, and help me pick up the materials by the way. After Han Zhong settled Duan Yun, he started the machine and started the night shift tonight.

Han Zhong's section is specialized in processing the column head of a single hydraulic pillar, because the accuracy of this old lathe is not high, the speed is slow, and the vibration is large, so it can only do the rough turning step of the column head, and the fine turning is replaced by another domestic lathe processing.

Han Zhong obviously didn't want to teach Duan Yun seriously, and for more than an hour, he basically didn't look at him directly, except for calling Duan Yun to take the material and put it on the chuck.

It is estimated that it is precisely for this reason that Han Zhong is a little indifferent to Duan Yun, a newly arrived apprentice.

In fact, there is no need for Han Zhong to teach him, Duan Yun also knows how to turn technology, when he graduated from college, he was a technician in the machining workshop, although the factory has used a large number of imported five-axis lathes, but there are still a few ordinary cars are still processing parts of general precision.

Duan Yun once asked the workers how to use the lathe in his spare time, and in the three years of that factory, he was also half a skilled worker, and he could also process some slightly difficult parts.

So even though the machine used by Master Han Zhong was very old, after just looking at it for a while, he felt that he was already able to get started.

And the master didn't speak, and Duan Yun didn't squeak, just stood next to him.

The night shift work was a bit long and boring, but Duan Yun's mind kept thinking about some technical problems at work.

In Duan Yun's view, if you just keep machining a simple workpiece like a hydraulic pillar head, then you can make this work simple and efficient through some simple technical improvements.

After thinking for a while, Duan Yun found half a stone pen, squatted on the ground and drew a design idea diagram.

Although there are differences in the machining accuracy of ordinary lathes, the working principle and operation method are basically the same.

Like the stigma head of this hydraulic pillar, it is divided into two steps: rough turning and fine turning.

The so-called rough turning is to process the cut metal material to a certain reserve, and finishing is to further improve the processing accuracy on the basis of rough machining.

In the case that the accuracy of the workpiece is not too high, Duan Yun can directly modify this lathe into a high-efficiency automatic lathe.

In fact, as early as the sixties, there were factory technicians who modified automatic machine tools, but it was only used on a very small scale.

The reason why this modified machine tool has not been promoted on a large scale in the country, the main reason is that the modified lathe can only process a single workpiece due to the simple technology, if you still want to use this lathe to process other workpieces, you also need to re-improve, and because of some limitations and defects in the early domestic technology and design, it is easy to have problems, so this technology has limitations.

But this modification is very suitable for Duan Yun's current work situation.

Master Han Zhong's old machine tool can only be used for a single product such as rough turning column head due to its slow speed, large vibration and low accuracy, which is very suitable for automatic modification.

In addition, Duan Yun's electronic and mechanical technology is not comparable to those old lathe workers and technicians in the factory at present, and modifying such a lathe is simply trivial.

Duan Yun squatted on the ground and kept writing and drawing with a stone pen, repeatedly revising the plan in several places, while his master Han Zhong simply regarded this newly recruited apprentice as air, just engrossed in his work.