I was dizzy and pulled to the table full of military uniforms. Zhong Bai was dizzy and didn't understand what was going on.

Zhong Bai was brought over but didn't drink, but he tasted it quite well.

However, when a comrade from the Military Institute mentioned a new topic, Zhong Bai suddenly woke up!

Gao Jian pressed Zhong Bai to his seat, pointed to a soldier in his early forties next to him, and said, "Xiao Zhong, this is Director Lu Changming of our 385 Military Science Institute. You are now responsible for mining and metallurgy, right? He wants to ask you for advice on some alloying technology."

"I can't ask for advice. I hope Director Lu will give me some advice." Facing the stranger, Zhong Bai did not dare to be arrogant. He nodded modestly and replied.

With Gao Jian's words, several officers from Nagyun Province on the table immediately stopped chatting, and everyone sat upright and looked at Zhong Bai and Lu Changming. This scene of banning orders immediately formed a sharp contrast with the lively rhythm of the other tables.

In order to get the other party into the state as soon as possible, Lu Changming directly introduced himself.

"Hello, Chief Zhong. I am in charge of the 385 Military Science Institute. Our institute is mainly responsible for the scientific research of the army logistics equipment manufacturing." Seeing that Zhong Bai's expression had not changed, he should have understood his meaning. He continued: "The topic we are currently engaged in is...updating the alloy of the mortar shell itself, which involves the issue of how to ductile iron is ductile. The progress is slow. Commander Gao said that you have also studied metallurgy, so I would like to ask for advice."

If the leader who knows what specific work Zhong Bai has done along the way would not ask him about his very professional alloy metallurgy manufacturing problems.

Because so far, Zhong Bai has not actually been involved in this area. Although he is in the position of chief of the mining metallurgy department, the specific areas he has participated in since he started working are nothing more than two major categories: fertilizer manufacturing and mining.

But Gao Jian didn't know these details. He attended the establishment ceremony of Baifeng Group today just to support him, but he happened to encounter a report on this issue some time ago, saying that the work has been progressing slowly recently and asked the military region to provide technical support. Gao Jian then concluded that Xiao Zhong was the head of the mining metallurgy department, and maybe there were any good ideas, so he pulled him over and asked.

Unexpectedly, this question was really the right person!

Zhong Bai was an industrial genius in his previous life, and such metallurgical problems could not be difficult for him at all!

After seeing Zhong Bai frowning for a moment, he asked, "Director Lu, if I'm not wrong... the purpose of your research is to increase the power of mortar shells, right?"

Zhong Bai's words immediately shocked the officers present!

The Director Lu even immediately looked at Deputy Commander Gao Jian next to him with vigilance!

Because Zhong Bai accurately guessed the real purpose behind his question!

And this is undoubtedly a military secret!

Seeing that everyone was so nervous, Gao Jian immediately spoke: "Don't be nervous, Xiao Zhong is a comrade with a high degree of zz discipline! I have not disclosed any news to him before, it should be what he had guessed just now."

With the leader's slow cheeks, Lu Changming looked a little slower and nodded, "That's right! It seems that Section Chief Zhong has researched this area! The bottleneck we are currently facing is... Taking the line of high-strength low-alloy ductile iron, but the data is not satisfactory, and the ideas are also limited by certain restrictions."

Zhong Bai immediately began to recall...

The ductile iron mentioned by Director Lu Changming is the main component of the material of the mortar shell. Ductile iron is a high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. Its excellent performance has been successfully used to cast some parts with high requirements for complex stress, strength, toughness and wear resistance.

In the 1970s, both military and civilian parties conducted research on the development direction of ductile iron, and concluded that the addition of rare earth elements to ductile iron can effectively enhance the performance indicators of alloys, and ductility is one of them!

Rare earths can spheroidize graphite. Since h.morrogh first used cerium to obtain ductile iron, many people have studied the spheroidization behavior of various rare earth elements and found that cerium is the most effective spheroidization element, and other elements also have spheroidization capabilities of varying degrees.

It is now 1982, and this area should have achieved certain results, but since Director Lu Changming also mentioned that "the data is not satisfactory", it means that there are higher requirements for ductility.

So Zhong Bai asked tentatively: "Does the alloy you are using mainly add spheroidization of cerium?"

Sure enough, Lu Changming nodded and asked: "Yes, but the content of abnormal graphite in the alloy is still not low. This piece limits the performance of the alloy itself. Is there any news about the latest research results in this regard? It is mainly from abroad, because we all know about it at home."

That is...how to suppress the production of abnormal graphite?

Zhong Bai thought to himself, haha, you will ask the right person!

In the last life, this field should have been a breakthrough in China's research in the late 1980s.

Of course the answer is still rare earths.

Research at that time showed that when the total amount of interfering elements such as pb, bi, sb, te, ti is 0.05 wt%, adding 0.01 wt% (residual amount) of rare earth can completely neutralize the interference and inhibit the production of abnormal graphite.

This has become common sense in the 21st century, but in 1982, it still has no field of decryption.

Zhong Bai thought about it and thought he should use an excuse to answer this question: "Well, in this regard, the French seem to be doing better in the world. I remember that when I went abroad on a business trip, I saw several papers that after experimenting, it was proposed that adding a certain amount of rare earths with residual amounts can reduce or even completely neutralize interference, and at the same time suppress the production of abnormal graphite. I thought it was quite interesting at the time, so I remembered it, but whether it has any effect will have to be proved through experiments."

Sure enough, when Lu Changming heard this, he immediately showed excitement!

Because those who do this also know that France is indeed the world leader in this area, and Zhong Bai's words are obviously true!

Lu Changming asked impatiently: "Wait, Chief Zhong! How much is this rare earth with a certain residual amount? What kind of rare earth element is it mainly?"

Seeing that the other party asked about the core, Zhong Bai no longer concealed it and immediately wrote down the data fluently: "If 0.02-0.03 wt% (residual amount) of bi elements are added to the ductile cast iron, the spherical graphite will be almost completely destroyed; if 0.01-0.05 wt% ce elements are added, the original spherification state will be restored, which is because the bi elements and ce elements form stable compounds."

"So the key is the bi element!" Lu Changming was very excited and had already started to take out his small notebook!

The bi element mentioned by Zhong Bai is the Chinese name of the bismuth element!

The ce element is the ce element mentioned at the beginning.
Chapter completed!