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

Thinking that everyone had to work tomorrow morning, he hurriedly asked everyone to go back and rest.

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

At the door, Zhao Guoyang took a quilt handed over by his cousin Zhao Qian, and suddenly remembered something.

"By the way, Xiaoqian, I have time to go to the next two days. I will ask Teacher Zhang to accompany you to make a mobile phone. As soon as you need work, it is convenient to connect with your 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 the reason for her hesitation, so he smiled and patted her on the shoulder and said, "Don't worry, you are now a reserve cadre of the company. It is natural to equip mobile phones. In this regard, I am not treating you with special treatment."

Seeing Zhao Qian feeling relieved, Zhao Guoyang waved his hand to her and said, "Okay, let's take a break early. Xiaoqian, I know your abilities very well. You will definitely be fine if you study hard and do it well."

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

...

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

After Zhao Guoyang made the decision, there was no suspense about the project establishment of the mine hoist.

In the past few days, Li Zhaohe and Zhao Siyan, who were from the "SMS Company", took technicians from the Technology Department and the New Product R&D Department to purchase a domestic mine hoist for decomposition and research.

In fact, Zhao Guoyang had already given Zhao Siyan the design idea of ​​the first mine hoist in his factory.

However, there is still a difference between theory and practice. Although his design idea is not problematic, if it wants to convert it into a physical object, it still requires a lot of verification and data support.

The only thing that doesn’t need everyone to worry about is the electronic control system of the mine hoist.

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

In addition, with the Dinghai Shenjian needle like Mr. Ji, there must be no problem.

While the technicians of the "SMS Company" were busy dismantling and studying the domestic mine hoist, Professor Ji and his students were not idle either.

These days, they have visited the libraries of higher education institutions such as Zhendan University and Songjiang Jiaotong University, and found a lot of information about mine hoists.

Students have a relatively systematic and comprehensive understanding of this heavy machinery, and are no longer in the state of being half-understanding at the beginning.

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

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

In addition to the three company leaders of Zhao Guoyang, Li Zhaohe and Zhao Siyan, almost all the technicians from the new product research and development department and the technical quality department were present.

On this side of Beijing University, Professor Ji and six students were sitting in the conference room one by one.

As the chairman of the company and the initiator of the "drilling hoist" project, Zhao Guoyang naturally sat in the middle, beside him were Li Zhaohe and Zhao Siyan.

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

According to Mr. Ji, he came from afar and could not be overwhelmed by the host, so he sat alone with the students.

After seeing that everyone was sitting down, Zhao Guoyang first said loudly: "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 should have been very clear before. It is to study and discuss the precautions for our 'Mine Elevator' project at the beginning of design and 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 of the technical department been going on in the past few days?"

Li Zhaohe straightened his back and said with a twelve-hearted spirit: "Mr. Zhao, it has been almost dismantled. We have also recorded its working principle and the structure of each component."

"The next step is to fully integrate all the links and you can officially enter the design stage!"

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

After hearing Zhao Guoyang's question, Zhao Siyan shook her head and said, "No, Mr. Zhao. Our new product development department has passed all the information feedback from the Technical Quality Department."

"It can be basically confirmed that with our company's current technical level, we can produce 'mine hoists'..."

Zhao Guoyang said "hum" and his eyes fell on Ji Chongxuan and his students again.

"Mr. Ji, you and your classmates have checked a lot of information these days. Do you have any questions about the implementation of the 'Mine Elevator' project, or do you need anything to add?"

Ji Chongxuan himself is an expert in electromechanical science and technology. In the "mine hoist", the only focus on the electronic control system is the electronic control system.

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

So in other aspects, Ji Chongxuan doesn’t express much opinion.

After hearing Zhao Guoyang's question, he turned his gaze to Yuan Qinghua and the others and said, "You have heard of Xiao Yuan, Liu Yan, Mr. Zhao's question, have you heard it?"

"If you have any questions, please raise them as soon as possible now. Don't wait until the project is officially launched before you can get rid of your own position!"

After Ji Chongxuan finished speaking, Yuan Qinghua and other classmates turned their attention to Tang Wanru.

When everyone was collecting information together these days, this "little jasper" girl from Jiangnan showed a completely different persistence and desire for knowledge from her appearance.

Although he is only a graduate student in the Department of Materials, Tang Wanru's attainment in mechanical fields is not low at all.

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

In other words, this girl who looked like a "little bird" actually passed the postgraduate entrance examination across majors. This was a very remarkable thing in the early 1990s.

At this moment, as everyone's eyes turned to themselves, Tang Wanru carefully said: "Mr. Zhao, during the last meeting, you answered the solution to the spindle safety problem for me."

"After I checked some information, I confirmed that your statement is completely feasible."

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

"However, after I looked up the relevant information, I found that even if better materials were used, the damage to the spindle was sometimes inevitable..."

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

"Are we going to solve this problem or avoid it?"

After Tang Wanru finished speaking, some technicians in the conference room cast a look of surprise and admiration at her.

Although these technicians from "SMS Company" may not have bachelor's degree, they have been engaged in heavy machinery, especially mining machinery development and research for a long time, and they are definitely much better at understanding mechanical equipment than ordinary college students.

Although Tang Wanru's question was asked about the new project "Mine Lift", it is also applicable to other mining machinery.

In fact, spindle damage problems are widely present in heavy machinery and engineering machinery products.

Tang Wanru's question can be said to be a point that makes everyone look at her with admiration.

As everyone's reaction was similar, Zhao Guoyang also cast an admiring look at Tang Wanru.

"Wan Ru's question is well mentioned. No matter how the material of the spindle changes, no matter how good the material is, it cannot be guaranteed to be 100% without wear."

"In such a situation, flaw detection for the spindle is an indispensable step."

"Spindle flaw detection?" After hearing this, Tang Wanru showed a hint of understanding.

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

"This kind of crack often appears in parts with the greatest periodic stress, such as the shoulder, the interference fit, the key connection, the oil injection hole, etc.."

"In order to identify the danger zones of fatigue cracks, we need to perform preventive flaw detection on the spindle."

"In this regard, after our elevator is designed, we will pass a series of experiments to specify the service life of the spindle."

"Any customer who has purchased our products must detect the lift spindle strictly according to this service life."

"In addition, in the main components of our elevator, we also need to use theory and a lot of tests to determine its limit load. If this limit load exceeds, flaw detection must also be carried out!"

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

Looking at Tang Wanru's relief, Zhao Guoyang smiled and said, "Student Wanru, the method of detecting the main shaft of the elevator is usually used internationally by ultrasonic flaw detection and magnetic powder flaw detection."

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

Tang Wanru's expression was stunned for a moment, and then nodded repeatedly and responded.

Now she is extremely impressed by this young Mr. Zhao.
Chapter completed!