Zhai Shouzheng did not answer directly, but turned to look at Zhang Du and others and asked.
"Teacher, I don't know." Zhang Du shook his head directly.
"I think there is nothing wrong with Senior Brother Gao's direction and thinking, but why is this brittleness phenomenon happening? Is it really strange?" Wei Ming also looked puzzled.
Yan Xiaoqing pursed her lips slightly.
"You guys!"
Zhai Shouzheng glanced over and said without further ado: "What do you think caused this embrittlement phenomenon?"
"It's the contamination of impurity elements." Gao Shaoyuan replied without thinking.
"Yes, contamination by impurity elements will cause embrittlement. You must know that titanium is an active element. Since it is an active element, it is very easy to absorb nitrogen, hydrogen and oxygen under high-temperature welding."
"In this case, the hardness and strength of the weld will increase, and the plasticity and toughness will decrease, resulting in embrittlement."
"Also, carbon will form a hard and brittle tic with titanium, which will cause cracks."
"So titanium and titanium alloys must be effectively protected when welding. The first is to prevent pollution from air or other factors, and the second is to enable better welding."
When Zhai Shouzheng said this, Gao Shaoyuan and others were not surprised at all.
Because they all understand these common sense issues, but the question is how to avoid this embrittlement phenomenon?
Seeing that the four Gao Shaoyuan people were still confused and had no clue, Zhai Shouzheng shook his head speechlessly. The basic professional knowledge of his four students was very solid, but they were just scratching the surface.
"You guys!"
Just when Zhai Shouzheng was about to tell the answer to the riddle, he suddenly saw Zhao Shanhe's thoughtful expression. He turned his eyes slightly and asked, "Director Zhao, did you think of something?"
"Professor Zhai, I did think of something, but I don't know if it's right or not." Zhao Shanhe nodded.
"Oh, tell me!" Zhai Shouzheng was quite interested.
"Then I'll tell you. If I'm wrong, you can correct me."
Zhao Shanhe smiled slightly and said: "Although I don't understand the professional knowledge you just mentioned, I can still get a general idea."
"You have made it very clear what you mean, that is, welding of titanium and titanium alloys cannot be carried out by gas welding or electrode arc welding, otherwise the joints will not be able to meet the welding quality requirements, so it is best to use argon gas protection or in
Is this what you mean by welding under vacuum?"
"Yes, that's what I want to say!"
Zhai Shouzheng's eyes lit up, he gave a thumbs up and said to Zhao Shanhe: "Director Zhao, I didn't expect you to have research on this. It's really not simple."
"hehe."
Zhao Shanhe smiled casually.
"Teacher, I have thought about what Director Zhao said, but the question is, does this have anything to do with our welding materials? It doesn't seem to have much to do with it."
"That's welding technology, we're talking about materials. If the quality of the materials is not up to par, it doesn't matter how good the technology is, right?"
Zhang Du asked still somewhat puzzled.
"Oh, I know!"
Gao Shaoyuan suddenly slapped his head and said belatedly: "I see, the teacher is right, I really got into trouble! Teacher, thank you, I know how to do it."
"You also want to thank Director Zhao. It was his words that reminded you." Zhai Shouzheng said with a smile.
"Yes, and thank you, Director Zhao, you are right." Gao Shaoyuan said with the welding rod in his hand.
"I'm just giving advice to senior engineers. I don't dare to wield a sword in front of professionals like you!" Zhao Shanhe waved his hand.
"Teacher?" Zhang Du looked over confused.
Wei Ming and Yan Xiaoqing were also confused.
"Why, don't you know? You guys, it seems that I really let you stay in school for too long, and your shortcomings are exposed when you encounter such practical subjects."
"In the future, if you have time, come to your senior brother's place for internship more often. It will be good for your development. Shao Yuan, please explain." Zhai Shouzheng raised his hand and said.
"yes!"
Gao Shaoyuan picked up the welding material, waved it in front of the three people, and said with a smile: "Director Zhao just said that the welding method of non-ferrous metal solder is usually protected by argon gas or in a vacuum.
Weld down."
"In this case, we can change our thinking. We don't need to just think about welding in the conventional method like before. We can just do welding in these two methods."
"In this case, our welding materials only need to meet these two conditions."
"To put it more bluntly, what we need to improve now is the quality of welding materials under argon protection and vacuum. If we solve this problem, the problem of non-ferrous metal solder will be solved. Do you understand?
"
Got it!
Now I understand everything.
The three Zhangdu people are not stupid. They just thought about the problem according to conventional ideas, so they fell into it. Now that they are awakened like this, of course they suddenly realize it.
Non-ferrous metal solder is originally a special welding material. In this case, it must have its own special welding technology.
In this way, the problem is simple, as long as the welding material adapts to this welding technology.
"Okay, let's continue trying in this direction." Zhai Shouzheng clapped his hands and said.
"OK!"
The four people in Gao Shaoyuan were in high spirits and continued to work in full swing.
"Professor Zhai, I still have some things to deal with, so I'll leave it to you."
Seeing this, Zhao Shanhe knew that the problem had been solved and that all that was left was just a matter of time. He stood up and said goodbye. After all, there were other things waiting for him to arrange in the factory.
After returning to the office, Zhao Shanhe could not even sit still when the phone on his desk rang.
"Hello, I am Zhao Shanhe."
"It's me, Du Jingming"
A familiar voice sounded in my ears.
"Hello, Magistrate Du, what are your instructions?" Zhao Shanhe said with a smile.
"Shanhe, didn't you say two days ago that you wanted to attend the Canton Fair held in Shenzhen?"
"Yes."
"I've already asked you about this. No problem. You can take the product with you when the time comes." Du Jingming said with a smile.
"That's great."
What Zhao Shanhe wants is a place to participate. He doesn't want to be like a headless fly bumping around like he did last time he went to Dongzhou City.
"Shan He, if you are free at noon, come out and sit down together and talk to you." Du Jingming changed the subject.
"No problem, I'm available at any time." Zhao Shanhe responded cheerfully.
"Then let's do this for now."
"good!"
After hanging up the phone, Zhao Shanhe couldn't help but raise his brows slightly.