Chapter 83 Young man, who are you scolding?
Gao Zhendong smiled: "Hey, it's just a habit in the army."

Staff Officer Lin was stunned: "You were a soldier?"

Gao Zhendong nodded: "I withdrew from the battlefield in 53 and retired in 55."

Old Chen made a joke: "He won two first-class merits and three second-class merits on the battlefield. He is a combat hero and is now the deputy captain of the factory's basic militia team."

Staff Officer Lin and several of his entourage stood in awe and saluted Gao Zhendong solemnly together.

The comrades from the Grassland Tractor Factory also had admiration on their faces. To be honest, before I met him, I never thought that this comrade was so young. Combined with this experience, he is indeed a legend.

Gao Zhendong was at a loss now, and he couldn't return the salute. But then he thought, I'm the deputy captain of the militia, so it's okay, so he returned the salute solemnly.

Although strictly speaking it is inappropriate, in this case it will only be regarded as a good thing and no one will nitpick for no reason.

After everyone sat down, Guan told Gao Zhendong the whole story of why he came to see him this time, and he was very embarrassed: "This is probably what happened. I am very embarrassed to talk about it, Engineer Gao, you have already asked for leave to rest, and I am still here to bother you."

Gao Zhendong didn't care. He took a break mainly to rest his brain, but he was fine. Besides, it was just a communication and had no impact at all.

Ever since he knew that Mr. Guan was from the Grassland Tractor Factory, Gao Zhendong had a rough idea of ​​why they came. If he remembered correctly, domestic nickel was almost out of stock.

The nickel-free 601 cast armor steel was developed by a group of people around April 60, and it should still be under research at this time.

高振东拿出去的3Z-T1和3Z-T2，其实就是日后的616焊接装甲钢和623铸造装甲钢。

The former replaces 603 steel, and the latter replaces 601 steel, but neither of them has been developed yet.

However, 601 steel has one advantage over the 623 steel that Gao Zhendong brought out, which is that it does not require any nickel. However, defects also exist. At this stage, the two can be adjusted and replaced with each other according to the material supply situation.

He shook his head: "Mr. Guan, you are too polite. It's okay for me. If you have any questions, please tell me."

Mr. Guan was not polite either. It was all for the sake of construction. Gao Zhendong said it was okay, so he naturally wouldn't be shy.

"I ask one by one, mainly because there are too many surprises for me and I have too many questions, haha." Mr. Guan made a joke and continued asking.

“Are 3Z-T1 and 3Z-T2 ready for mass production?”

Gao Zhendong nodded: "No problem, as long as the materials and equipment are complete, mass production will not be a problem."

"Does your factory have the production conditions?"

Director Yang took over the question: "To be honest, we are a steel rolling mill. Judging from our situation, we may not be able to have the conditions for large-scale production in the short term because we lack equipment."

This made Guan Zong a little confused: "Hiss, this."

However, Director Yang was very open-minded. Because the Third Rolling Mill could not have the ability to do this in a short time, and judging from the situation, it was obviously impossible to wait any longer, so he just let it go: "You can apply to our department to transfer the production technology."

This kind of thing is common these days, the whole country is like a chessboard, and the ownership of technology is not so clear.

Mr. Guan was somewhat moved: "Zhendong, what do you think?"

This is because they are afraid that the Third Rolling Mill and Gao Zhendong will think that they are here to pick fruits, so not only should they listen to the words of the director of the Third Rolling Mill, but Gao Zhendong, as the only researcher, should also respect his opinions. Gao Zhendong nodded: "This is a solution. Our factory does not have the ability to do this in the short term. We do not have the steelmaking plant and equipment for mass production, and transportation is also a problem."

Anyway, for him, the title of inventor is inevitable.

But considering his situation and the social environment, economic benefits are not important.

Since Director Yang is willing to let the matter go, it doesn't matter where the production is done.

General Guan and Staff Officer Lin were deeply moved by the selflessness of the Third Rolling Mill and Gao Zhendong, and thanked them profusely.

Mr. Guan calmed himself down and continued to ask questions that concerned him.

"3Z-T2 cast steel, how much nickel, molybdenum, and rhenium does it contain?"

“分别是0.8%~1.3%，0.25%~0.45%，0.02%~0.12%。”

When Mr. Guan heard this ratio, he was very happy. The weight of nickel in the steel they use now accounts for about 3.8%. A tank, including the hull and turret, consumes more than 700 kilograms of nickel.

而高振东这个3Z-T1和3Z-T2结合起来，可以直接将镍的用量减少到100kg左右。

“Have you considered further reducing the nickel content of 3Z-T2?”

"I have considered it, but further reducing the amount of nickel will bring two problems: one is insufficient hardenability, and the other is poor low-temperature performance. I am not good enough and can't do it anymore. When I was doing this, it was for the service of thermocouples. I happened to trial-produce other better materials, so I didn't continue to work on this."

These two issues affect the performance and quality of the finished product, and the environmental adaptability of the finished product.

In fact, the two problems mentioned by Gao Zhendong are also the main reasons for the future research on 623 steel to replace 601 steel. In terms of hardness alone, 623 and 601 are actually basically on the same level.

There is another issue that Gao Zhendong did not mention, and cannot be mentioned now, which is that the source of raw materials for 601 steel is also difficult. Although nickel is no longer used, the use of some other scarce elements has increased.

However, at this time, the nickel problem is the most prominent, and 601 steel has solved the nickel problem, which is very successful.

Since 601 steel has not been developed yet, this question naturally cannot be answered.

Listening to Gao Zhendong saying that his level was poor, General Guan and the comrades from the Grassland Tractor Factory felt mixed emotions. "Young man, who are you scolding?"

In fact, they will never know that Gao Zhendong's level in metallurgy is much worse than theirs, he is just good at copying answers.

Mr. Guan himself is an expert in armored steel. After thinking for a while, he nodded and said, "That makes sense. This problem is indeed possible. Comrade Zhendong has done a very solid job in practical work."

Gao Zhendong thought for a moment and asked, "Are you worried about the amount of nickel used?"

Mr. Guan nodded: "That's right, the less the better. But the current situation is beyond our expectations. It has solved more than half of the problem. We can even say that we have gone from having no solution to basically meeting production requirements. Zhendong, you have made a great contribution."

Gao Zhendong admires the group of people who have truly created the first generation of domestic nickel-free armor steel from scratch. To use the analogy of writing online articles, he is just a fan writer, and they are the ones who create original works.

(End of this chapter)