Countercurrent 1982

Chapter 235 Surprise
On the second day of work, when Duan Yungan walked into the office building, he saw Cheng Qingyan who was carrying a thermos pot and was about to go to the boiler room to fetch water.

"Morning." Duan Yun greeted with a smile.

"En." Cheng Qingyan responded lightly, and passed Duan Yun.

Duan Yun was somewhat surprised to see that Cheng Qingyan seemed a little indifferent to him today, but he figured it out soon, and couldn't help but feel a little funny in his heart.

After returning to the department, Duan Yun cleaned up first, then took out yesterday's newly drawn drawings from the drawer, together with the drawing materials Cheng Qingyan gave him yesterday, strode to the next office.

At this time, Cheng Qingyan had already returned from fetching water, and after seeing Duan Yun knocking on the door to enter, she asked, "Is there anything wrong?"

"Then take a look at the blueprint." Duan Yun said, and put the blueprint in Cheng Qingyan's desk.

"You...have you finished the drawing?" Cheng Qingyan glanced at the drawing on the table and asked suspiciously.

Cheng Qingyan didn't see Duan Yunhua's new drawings yesterday, so she was somewhat surprised.

However, Qingyan is still a little disappointed in the process, because in her opinion, the powerful shot blasting machine has many design difficulties, and it is absolutely impossible to solve it in a day or two. Duan Yun drew a new design drawing so quickly, most likely Cheng Qingyan wanted to be perfunctory, so this made Cheng Qingyan a little unhappy.

"Look for yourself, and if you think there is anything wrong, just ask me." Duan Yun raised his brows and said.

"Then thank you." Although Cheng Qingyan was a little disappointed and believed that Duan Yun was perfunctory, she still thanked her with a smile.

"Then I'm leaving." After Duan Yun finished speaking, he turned and left Cheng Qingyan's office.

After Duan Yun returned to the office, he took out the exercise booklet he brought in the morning from the drawer.

Last night, Duan Yun used the newly bought exercise book to give a simple test to his younger sister Duan Fang, and he didn't finish the test until eleven o'clock in the evening.

Since it was too late, and considering that Duan Fang had to go to class tomorrow, Duan Yun didn't judge the papers and let her go to bed directly.

So Duan Yun planned to judge his sister while he was working during the day.

Duan Yun is very free in the technical department now, and no one has arranged a job for him.

Now the colleagues in the department know that Cheng Qingyan will be sent to school with him every 246 nights, and the relationship is very good. In addition, although Duan Yun is only a technician at present, with his education background, he will definitely be promoted all the way in the future, and the technical department is just one of his It's just a springboard, so even if Corey likes to make small moves behind the scenes and gossip in front of the leader the most, he won't have any opinions because Duan Yun does personal things during working hours and usually arrives late and leaves early, because doing so will only lead to self-importance. Find bad luck.

Compared with the answers at the back of the exercise booklet, Duan Yun approved the papers very quickly, and approved several exercises in less than 10 minutes.

To Duan Yun's relief, Duan Fang's homework was indeed very good, and the exercises were basically all correct. She scored 95 points in the math paper with a perfect score of [-].

However, in Duan Yun's opinion, the difficulty of this exercise paper is relatively low, which is much easier than the adult college entrance examination paper he took before, and the real college entrance examination paper is much more difficult than the exercises in the exercise booklet, so even if it is Duan Fang got close to full marks in the test, but it doesn't mean that he can also get such high marks in the college entrance examination.

So next, Duan Yun plans to learn from this exercise book, increase the difficulty of the exercises, and give his sister another test.

At the same time, Cheng Qingyan also began to check the drawings Duan Yun gave her in her office.

At first glance, it seemed that there were newly drawn blueprints that seemed to be the same as hers, but after careful observation, Cheng Qingyan couldn't help being surprised.

It turned out that Duan Yun's newly drawn shot blasting machine drawings made several improvements to her previous design.

As the saying goes, laymen watch the excitement, and experts watch the way. After comparing the two blueprint designs, Cheng Qingyan found that Duan Yun's design was indeed very clever. Although the changes were not major, they all directly hit the weakness of Cheng Qingyan's design.

Somewhat different from Cheng Qingyan's design idea, Duan Yun grasped the size design of the key parts of the machine very accurately. There are several long formulas listed at the bottom of the drawing, which accurately calculated the maximum size of the impeller in the shot blasting machine. In addition, there are strict instructions on the material of the impeller blades and the temperature process of heat treatment. The final design scheme is better than Cheng Qingyan's design in terms of the efficiency of shot blasting and the durability of the machine. A great improvement!

After reading this blueprint, Cheng Qingyan was dumbfounded in surprise.

Cheng Qingyan initially thought that it would take at least a few days for Duan Yunguang to master the working principle and related knowledge of the powerful shot blasting machine.

The impact of the powerful shot blasting machine on the shot peening quality mainly includes the following aspects: steel shot material, steel shot diameter, steel shot speed, steel shot flow rate, injection angle, injection distance, injection time, coverage, etc.The change of any one of these parameters will affect the effect of shot peening to varying degrees.

Therefore, if you want to design a shot blasting machine with mature technology and excellent technology, there is a high technical threshold.

But judging from the few blueprints he drew, Duan Yun has not only mastered the design principle of the powerful shot blasting machine, but also has a fairly high level of attainment, which is not a level that a novice can reach at all!
Moreover, it only took Duan Yun one day to complete the improvement of his blueprint design, so that Cheng Qingyan felt that the gap between her design level and Duan Yun's was not so big at this moment. If Duan Yun was a college student, then Cheng Qingyan was In front of him is like a primary school student who hasn't graduated yet!
Cheng Qingyan felt that she couldn't see through Duan Yun, combined with the fact that Duan Yun was admitted to Ye University with the No.1 grade in the city this time, it made her feel that Duan Yun was a bit unpredictable...

Sitting at the desk staring at the blueprint for a few more minutes, Cheng Qingyan bit her lower lip, stood up and walked out of the office.

"Duan Yun, come out." Cheng Qingyan came to the door of the technical department and waved to Duan Yun.

"What's the matter?" Seeing this, Duan Yun got up and walked out.

"Have you ever been in contact with a powerful shot blasting machine before?" Cheng Qingyan looked directly at Duan Yun and asked.

"I just looked at the information you gave me yesterday." Duan Yun paused, and then said: "What's wrong? Is there something wrong with my drawings?"

"No, your design is very good." After Cheng Qingyan pondered for a moment, Liu Mei raised her eyebrows and said to Duan Yun: "When do you plan to let me take a picture of you?"

"There is class tonight, so let's get off work tomorrow afternoon!" Duan Yun said with his eyes brightened upon hearing this.

(End of this chapter)