Chapter 53 High Strength Automotive Steel
Car body strength is still a relatively unfamiliar topic at this time.
At least that’s how it is in China.
Everyone is still in the process of solving existing problems first and then discussing whether it is better or not.
But in later generations, body safety as the basic standard of automobile safety has attracted more and more people's attention.
Among them, body strength and stiffness are the two parameters most closely related to body safety.
Car body strength refers to the ability of the car body to not be easily damaged when a large external force is applied to the car body in the event of a collision.
Body stiffness refers to the ability of the vehicle body to resist deformation when it is subjected to general external forces that will not damage the vehicle body during use.
The consequences of insufficient strength are cracking, fracture, plastic deformation and collapse of the body, causing the body to lose its functionality.
A car body with insufficient rigidity will produce squeaking and high-frequency vibration sounds during use, and the opening of the car body will deform, making it difficult to open and close the door and reducing the sealing.
Even insufficient body stiffness will affect the stability of the vehicle when turning at high speeds.
It can be seen that the body structure must have the necessary strength and stiffness.
Although body strength and stiffness are not the same concept, generally speaking, a body with high strength and stiffness will be less deformed by various external forces while driving.
The body strength mentioned by Huang Wenbin basically contains the two concepts of strength and stiffness.
It is very simple to improve this parameter in future generations.
Use more hot stamping parts and use more 980MPA ultra-high-strength automotive steel plates, and the overall body strength will naturally increase.
But for China in 1978, there was no such thing as high-strength automotive steel plates.
Even the currently produced BJ212, in order to improve the collision strength on the door side, can only be achieved through structural optimization.
“Representative Huang, after our 1:1 clay model is produced, the design of the body structure will be further implemented.”
“But to improve the strength of the body, the most important thing is High-strength automotive steel is needed, otherwise it will be meaningless even if the design is good but the material is not up to standard.”
Jiang Hui's answer was not to shirk responsibility, but to state a fact.
Although Capital Automobile Manufacturing Plant is a large local factory, it does not have the ability to produce automobile steel plates.
The steel plates used on BJ212 are almost all produced by Anshan Iron and Steel and Shougang.
If you want to make a bigger breakthrough in this area, you need to have full cooperation with the steel mills.
"Lia Jiang, do you have any ideas about high-strength automotive steel?"
Huang Wenbin was not surprised by Jiang Hui's answer.
Since he is concerned about the strength of the car body, he must also know the key point of the problem.
Originally he just asked casually, but Jiang Hui actually said: "I have some ideas, but they have not been verified. I need to communicate with the experts at Shougang to see if they think these theories are valuable. . ”
High-strength automotive steel is nothing to Jiang Hui.
Not to mention that the current tensile strength of 340MPA is considered a high-strength steel plate. Even the production process of 980MPA automobile steel plates in later generations is very familiar to Jiang Hui.
So there is absolutely no problem in compiling a few articles on this basis.
However, in the field of materials science, many things are obtained through various experiments.
Even if Jiang Hui knew that what he took out could be used directly, no one would believe it.
Even if he said this, other people's evaluation of Jiang Hui would be lowered, thinking that he didn't even understand basic common sense.
So at this time we can only bring other universities or steel plants to cooperate.
"I have a classmate who is a professor in the Iron and Steel Metallurgy Department of Capital Iron and Steel Institute. If you have ideas related to automobile steel plates, you can talk to him." Although Jiang Hui only said that he had some ideas, Zhu Jiansheng knew him well. Knowing that Jiang Hui must have some plans in mind before he said this.
In this case, let’s talk to professionals.
"If the professors from the Iron and Steel Institute help, then I think the problem of improving the strength of the BJ212 body will basically be solved."
Huang Wenbin felt quite good after hearing this. .
Originally, he just mentioned it like that and didn't expect it to be solved.
I didn’t expect that it seems to be possible now?
“It’s better to choose the day than to hit it. Let’s go directly to him.”
Zhu Jiansheng naturally also knows the importance of steel for cars.
To produce a car, most of the materials are various types of steel.
Various steel materials such as section steel, medium and thick plates, thin plates, steel strips, steel pipes, wire rods, etc. are indispensable.
Not to mention special steels such as gear steel, bearing steel, and spring steel.
"Why don't we give him a call first?"
Jiang Hui is still not used to the idea of just knocking on the door without saying hello.
But Zhu Jiansheng doesn’t think so, “It’s too laborious to make a phone call. You may not be able to get through after waiting for dozens of minutes. Even if you get through, the noise on the phone will be very loud, making communication unpleasant. , just go there.”
Zhu Jiansheng said so, so Jiang Hui naturally had no objection.
The two of them rode their bicycles and went straight to the Capital Iron and Steel Institute.
The two of them were quite lucky. Zhu Jiansheng’s classmate Zou Yuan, a professor of the Department of Iron and Steel Metallurgy at Capital Iron and Steel Institute, happened to be in his office.
"Old Zhu, what kind of wind brought you here to me?"
Zou Yuan was very excited when he saw Zhu Jiansheng for the first time.
Even though everyone is in the capital, we don’t see each other a few times a year.
When they were studying at Huaqing University, their relationship was relatively good.
Now that everyone has resumed work, it is time to usher in the second spring of life.
"I'm here to ask for help."
Zhu Jiansheng was not polite to Zou Yuan. After briefly introducing Jiang Hui and the BJ212 upgrade project team, Entered the topic.
"Do you want Shougang to supply you with high-strength automobile sheets?"
Zou Yuan's eyes shone, and he was obviously very interested in this topic.
Anshan Iron and Steel Co., Ltd. is the best company in China in terms of automotive sheets. Although Zou Yuan also has some cooperative research projects with Shougang Group, the progress is not very smooth.
I didn’t expect that Capital Automobile Manufacturing Plant and Capital Institute of Technology were also interested.
Then the prospect of this matter is worth looking forward to.
"Yes, Xiaojiang and I have pondered some things related to automobile steel plates before and came up with the idea of producing interstitial-free steel and P-containing high-strength automobile steel."
"But you also know that we are not Those who specialize in metallurgy are still a little unsure about whether these theories are feasible. "
Zhu Jiansheng had already had an in-depth discussion with Jiang Hui on this topic on the way here, and now he is confirming it with Zou Yuan. feasibility of the idea.
(End of this chapter)