The Grandmother in the Siheyuan

Chapter 220 Confusion

Liu Hua decided to start with 7075 aluminum alloy, because the existing B95 in our country is almost the same as 7075, just slightly behind, and it is always easier to make improvements than to create something out of nothing.

Liu Hua's old subordinate, who was originally a technician who joined the factory as a technical secondary school student, looked at Liu Hua with admiration and asked, "Engineer Liu, where should we start?"

"B95." Liu Hua said firmly: "The fuselage now uses part of B95, but the strength is not enough. The first goal is to improve B95."

Liu Hua had a good plan. In the process of improving B95, through seemingly blind matching, he accidentally discovered the formulas of several other aluminum alloys, and then everything could be explained.

At this time, Li Huaide's role came to the fore. He helped Liu Hua coordinate raw materials and various testing equipment to upgrade the experimental workshop.

Some people think that aluminum alloy matters should not be handled in steel mills. The reason is that in addition to production, rolling is also required, which is a very important step, and steel mills happen to have the conditions for this.

When Liu Hua started the improvement work, the first thing he considered was rationality. He had a complete formula, but as we all know, materials are the most tedious and complicated.

You can't just boast and come up with all the recipes in one day, otherwise others will have to wonder how you got there and how he could have done it so easily.
So Liu Hua began the long experimental process, which was only a blink of an eye compared with the material research and development of others.

After a month of experiments, Liu Hua pretended to accidentally discover a new aluminum alloy material ratio that was very suitable for aerospace.

"This new material has such high indicators, record it down quickly." Liu Hua instructed: "Although it is very different from the formula of B95, it may be useful."

"What a pleasant surprise, Mr. Liu." The assistant said with a smile, "This is simply an unexpected success."

Liu Hua smiled and said: "In materials science, it is often a case of blind cats catching dead mice. After all, research on materials can only rely on exhaustive methods. There is no universal formula to calculate the proportion of materials, so we can only study it like a blind man touching an elephant."

The assistant recorded the ratio of this new aluminum alloy material and asked, "Next, let's start the research on rolling."

Liu Hua shook his head: "It's not that easy. There are more than one type of aluminum alloy materials needed for airplanes. Different parts require different aluminum alloys. We have to continue researching new materials."

Liu Hua carefully observed everyone's reactions. No one expressed doubts about this unexpected new material, which showed that his strategy was correct and he could continue to do so and continue to develop new materials in a muddle-headed way.

So on average, a new aluminum alloy material would come out every one to one and a half months. During this period, Liu Hua boldly tried rare earth elements.

He vaguely remembered that in his previous life, he had a chat with a PhD in materials science, who once said that the material was not strong enough, even though rare earth elements were added to it. Rare earth elements were simply a panacea.

The addition of rare earth elements will definitely make various data intensity indicators reach expectations. The only thing that is uncertain is the cost of large-scale production of this new material in the later stage.

In addition to the new aluminum alloy materials such as 7055 that Liu Hua needed, Liu Hua actually obtained a lot of new formulas, all of which were new formulas that could reach the extreme in a certain data.

This new material may be a bit extreme and not have a wide range of applications, but it can be used in some very niche areas in the future and can be regarded as a technical reserve. It may not be of any use at present, but Liu Hua believes that it will definitely be useful in the future.

After spending more than half a year and looking at the four or five new aluminum alloy materials he had developed, Liu Hua asked Li Huaide for a job.

"Uncle, I have a new job for you." Liu Hua said with a smile, "I can't leave for a while, please do me a favor and send the experimental results to Shanghai for the chief engineer of Y-10 to have a look." Li Huaide nodded, then smiled and said, "I will ask someone to buy a train ticket right now, and I will definitely send the things to him as quickly as possible."

"Why buy a train ticket?" Liu Hua laughed: "Uncle, let me show you how to eat foreign food. Take a plane."

Although Li Huaide held a high position in the First Ministry of Machinery, he had never been on a plane. He was surprised and asked, "You mean a plane, a military plane?"

"What are you thinking about?" Liu Hua shook his head. "We can take a civilian airliner from Beijing Airport to Shanghai. Maotai and Huazi are served on the plane."

Li Huaide directly picked up the small box containing the documents and said, "Then I want to try it. What is the difference between the Moutai and Huazi on the plane and those on the ground?"

When Li Huaide came back from Shanghai, he was filled with emotion: "This is my second time to Shanghai. The last time I went there was during the liberation period. At that time, I slept on the street. I just wanted to avoid disturbing the people. This time, I finally saw the prosperity of Shanghai."

"After all, it is our economic center."

Li Huaide nodded and said, "People in the south make things more delicately than we do. What I bought for your aunt is not a good thing. The wool sweaters produced by the knitting factories in the south are all frayed."

"So you're going to the Magic City for shopping."

Li Huaide shook his head. "No, I went there to do something serious. The chief engineer was very surprised. You have only spent more than half a year to experiment with the aluminum alloy material needed for the aircraft. He has seen the experimental results. Let me tell you to roll it out as soon as possible, and after replacing it with your aluminum alloy material, conduct a second test flight."

Liu Hua found Director Yang and said, "Send me some senior technicians. I need to rebuild the rolling mill in the experimental workshop."

Director Yang nodded and said, "Don't worry, I won't delay your work. In order to ensure your smooth production, I have rehired more than a dozen retired masters."

Yi Zhonghai was also among those who were re-employed. After all, there were not many level eight workers in the country. They were all treasures. When he walked into the experimental workshop, he began to feel deeply moved.

“I never thought that after retirement, I would be able to walk into a workshop again one day.”

"Okay, Lao Yi, stop sighing, let's get back, there's an important mission."

Just as Yi Zhonghai was about to work, he saw Liu Hua and was also surprised.

"Hua Zi, why are you still in the steel mill? Didn't they say you were transferred?"

Since Yi Zhonghai had a child, he has had no conflicts with anyone, so Liu Hua has a good relationship with him.

"Keep it a secret. I transferred you here to cooperate with my work." Liu Hua said seriously, "You are also an experienced worker. I believe I don't need to say anything more."

(End of this chapter)