Zhao Guoyang and the subordinates of "Xingtai International" finished the meeting, and it was almost early in the morning.

Thinking that everyone would have to work tomorrow morning, he hurriedly asked everyone to go back to rest.

As for himself, he was arranged by Zhang Yufang to live in an empty dormitory on the tenth floor.

After receiving a quilt handed over by his cousin Zhao Qian at the door, Zhao Guoyang suddenly remembered something.

"By the way, Xiaoqian, I have to be free for the past two days, I asked Mr. Zhang to accompany you to get a mobile phone, one is for work, and the other is convenient for contacting the second uncle and second aunt. ”

"Uh......" Zhao Qian was stunned for a moment, her mouth opened, and she didn't say anything after all.

Zhao Guoyang naturally understood what the reason for her hesitation was, so he patted her shoulder with a smile and said: "Don't worry, you are now a reserve cadre of the company, and it is a matter of course to be equipped with a mobile phone, in this regard, I am not giving you special treatment." ”

Seeing Zhao Qian's relieved look, Zhao Guoyang waved his hand at her and said, "Okay, let's rest early." Xiaoqian, I know your ability very well, study hard and work hard, it's absolutely no problem. ”

After listening to her cousin's words, Zhao Qian clenched her fists, nodded vigorously, and watched Zhao Guoyang enter the house, and then slowly turned around and left.

……

In the next few days, Zhao Guoyang basically turned all his attention back to the "SMS company".

The establishment of the mine hoist, after Zhao Guoyang made the decision, there was no suspense.

In the past few days, on the side of "SMS Company", Li Zhaohe and Zhao Siyan have respectively taken the technical personnel of the Technology Department and the New Product R&D Department to purchase a domestic mine hoist for decomposition research.

In fact, the design idea of the first mine hoist in his factory, Zhao Guoyang has already given Zhao Siyan a little bit of allocation.

However, there is still a difference between theory and practice, although there is no problem with his design ideas, but if he wants to transform them into real things, he still needs a lot of verification and data support.

The only thing that you don't need to worry about is the electronic control system of the mine hoist.

Because the patent applied by Zhao Guoyang has been approved by the state.

In addition, there is a Dinghai God Needle like Ji Lao, there must be no problem.

While the technicians of the "SMS Company" were busy dismantling and researching the domestically made mine hoist, Professor Ji and the students were not idle.

These days, they have walked around the libraries of Aurora University, Songjiang Jiaotong University and other institutions of higher learning, and found a lot of information about mine hoists.

For this kind of heavy machinery, the students can be regarded as having a more systematic and comprehensive cognition and understanding, and they are no longer in a state of half-understanding.

Seeing that tomorrow is the weekend again, on Saturday morning, Zhao Guoyang gathered everyone again and held a seminar on the progress of the project.

The scale of this meeting is completely different from the first meeting.

In addition to the leaders of Zhao Guoyang, Li Zhaohe and Zhao Siyan, almost all the technical personnel of the new product research and development department and the technical quality department are present.

On the side of Jingbei University, Professor Ji and six students also sat in the conference room.

As the chairman of the company and the initiator of this "drilling hoist" project, Zhao Guoyang naturally sits in the middle position, and his side is Li Zhaohe and Zhao Siyan.

Originally, Zhao Siyan wanted to give up her position to Ji Chongxuan, but she was politely rejected by this one.

According to Ji Lao's statement, he was a guest from afar, so he couldn't dominate the crowd, so he sat alone on one side with the students.

After seeing that everyone was seated, Zhao Guoyang first said aloud: "Okay, everyone is here, so let's start!"

Opening the notebook in front of him, Zhao Guoyang said calmly: "The main purpose of today's meeting, everyone should be very clear before, is to study and discuss the precautions at the beginning of the design of our 'mine hoist' project, as well as the current work progress. ”

Speaking of this, Zhao Guoyang turned his head to Li Zhaohe and asked, "Director Li, how has the dismantling and analysis work been carried out by the technical department in the past few days?"

Li Zhaohe straightened his waist and said with a spirit: "Mr. Zhao, it has been almost disassembled, and we have also recorded its working principle and the structure of each component." ”

"In the next step, you only need to integrate all aspects to officially enter the design stage!"

Zhao Guoyang said "um", turned his head sideways and said to Zhao Siyan: "Minister Siyan, do you still have any doubts about this project here in the new product development department?"

After listening to Zhao Guoyang's question, Zhao Siyan shook her head and said, "No, Mr. Zhao." Our new product development department has gone through the information fed back by the technical quality department. ”

"Basically, it can be determined that with the current technical level of our company, it is possible to produce 'mine hoist'......"

Zhao Guoyang let out a "hmm", and his eyes fell on Ji Chongxuan and the students again.

"Mr. Ji, you and your classmates have consulted a lot of information these days, do you have any questions about the implementation of the 'mine hoist' project, or do you have anything to add?"

Ji Chongxuan himself is an expert in mechanical and electrical engineering, and on the "mine hoist", he only focuses on the electronic control system.

In this regard, Zhao Guoyang's patent of "DC all-digital new electronic control system" has been confirmed by him, and it has definitely reached the first-class level.

So in other aspects, Ji Chongxuan is not very expressive.

At this time, after listening to Zhao Guoyang's question, he turned his gaze to Yuan Qinghua and the others: "Xiao Yuan, Liu Yan, Mr. Zhao's question, have you all heard it?"

"If you still have doubts, raise them as soon as possible, don't wait until the project is officially launched, and then mess around!"

After Ji Chongxuan finished saying this, Yuan Qinghua and the other classmates turned their eyes to Tang Wanru.

When these big guys are collecting information together, this Jiangnan girl from the "small jasper" shows a completely different persistence and curiosity from her appearance.

Although she is only a graduate student in the Department of Materials, this Tang Wanru's attainments in machinery are not low at all.

After everyone asked, her classmate Liu Yan told others that Tang Wanru's undergraduate major was mechanical design, manufacturing and automation.

In other words, this girl who looks like a "little bird" turned out to be a graduate student who was admitted across majors, which was a very remarkable thing in the early nineties.

At this time, seeing everyone's eyes turned to herself, Tang Wanru cautiously said: "Mr. Zhao, at the last meeting, you gave me the solution to the spindle safety problem. ”

"I've looked up some information and I'm sure your claim is completely valid. ”

"In the selection of spindle materials, we can indeed use low-carbon alloy steels such as 20CrMnTi, 20Mn2B, 20Cr or nitriding steels such as 38CrMoAL to replace ordinary bearing steels. ”

"However, after looking at the relevant materials, I found that even with better materials, damage to the spindle is sometimes unavoidable......"

Speaking of this, Tang Wanru opened her voice with concern: "What I have been worried about is whether the quality of the spindle will become the biggest hidden danger of our 'mine hoist'?"

"Is there a way to solve this problem, or avoid it?"

After Tang Wanru's words were finished, some technicians in the conference room looked at her with surprise and appreciation.

Although these technicians of "SMS company" may not all have a bachelor's degree, they have been engaged in the development and research of heavy machinery, especially mining machinery, for a long time, and their understanding of machinery and equipment is definitely much stronger than that of ordinary college students.

At this time, Tang Wanru's question, although it is about the new project of "mine hoist", is also applicable to other mining machinery.

In fact, the problem of spindle damage is widely found in heavy machinery and construction machinery.

Tang Wanru's question can be said to be a direct poke at the point, and everyone was impressed by her at once.

Similar to everyone's reaction, Zhao Guoyang also cast an appreciative look at Tang Wanru.

Wanru's question is a good question, no matter how the material of the spindle changes, even if it is a good material, it cannot be 100% guaranteed that it is not worn. ”

"In such a situation, it is an indispensable step to detect flaws for the main axis. ”

"Spindle flaw detection?" Hearing this, Tang Wanru showed a look of understanding.

Zhao Guoyang said "um" and said: "That's right! The spindle is prone to cracks under a large periodic load for a long time, and under unknown circumstances, if it deteriorates further, it will gradually lead to fatigue fracture. ”

"This kind of crack often appears in the area where the periodic stress is greatest. For example, at the shoulder of the shaft, at the interference fit, at the key joint, near the oil filling hole, etc. ”

"In order to identify the danger zone of fatigue cracks, we need to carry out preventive flaw detection on the spindle. ”

"In this regard, after the design of our hoist, we will go through a series of experiments to specify the service life of the spindle. ”

"Any customer who buys our products must carry out flaw detection on the hoist spindle strictly according to this expiration date. ”

"In addition, on the main components of our hoist, we also need to determine the ultimate load through theory and a large number of tests. If this limit load is exceeded, a flaw detection must also be carried out!"

When Zhao Guoyang said this, everyone's faces showed a look of relief.

Looking at Tang Wanru's relieved look, Zhao Guoyang said with a smile: "Classmate Wanru, regarding the method of flaw detection of the main shaft of the hoist, the ultrasonic flaw detection method and the magnetic particle flaw detection method are usually used in the world. ”

If you are interested, you can check out an article in the third issue of the International Journal of Construction Machinery in 1989. The title is "On the Flaw Detection of the Mine Hoist Spindle......"

Tang Wanru looked stunned for a moment, and then nodded again and again.

Now she has more admiration for this young Mr. Zhao.

This can say such a specific article in the "International Journal of Construction Machinery", there is no doubt that people's knowledge is genuine, full of real gold.