Material Empire

The one on the left is Miao Lei's father, and the one on the right is Section Chief Xiang, Xiang Jiyong. Ning Mo introduced the two people who came to Qin Hai in a low voice.

Qin Hai nodded, went forward, and said to Miao Funan: Mr. Miao, I am a technical school student who was just assigned this year. I study casting. The labor and management department asked me to work as a foundry worker in the foundry workshop. This is me. letter of introduction.

With that said, Qin Hai handed over the letter of introduction issued by the labor and capital department to Miao Funan. Miao Funan took the letter of introduction, exchanged glances with Xiang Jiyong calmly, and said, Oh, your name is Qin Hai, let me ask you, what did you learn in technical school?

Qin Haidao: My main study is casting, and I also learned some heat treatment. In addition, I usually like to read books, so I have a little understanding of things related to the properties of materials.

Qin Hai said this because he wanted to leave a hole for himself. He showed his skills in front of Xiao Dongping yesterday, and he can judge the quality of steel only by visual inspection and sound recognition. This kind of ability cannot be explained by the study in the technical school. Say that I usually like to read books, so I learned some extra things, so that I can find an excuse for all the knowledge I have.

Oh? Young man, he is not very old, and his tone is not small. Xiang Jiyong interjected without losing the opportunity. He came to the casting workshop today just to find an opportunity to try Qin Hai's skills. Now that Qin Hai was uttering wild words, Xiang Jiyong just seized this opportunity to test Qin Hai in an unobtrusive manner.

Uncle Xiang, Dad, Qin Hai is really capable. Miao Lei said to Xiang Jiyong and Miao Funan, He can do quenching, and he did a great job.

Miao Lei was eager to recommend Qin Hai to his father and Xiang Jiyong, but unexpectedly fell into Xiang Jiyong's arms. He followed Miao Lei's words and asked Qin Hai: Really? Do you know how to quench?

Qin Hai felt like he was on a thief's boat, but Miao Lei was so talkative that he set him on fire and roasted him. He didn't know what the expressionless production section chief was thinking, so he said vaguely: Section Chief Xiang's words really caught me. The quenching process is extensive and profound, so I dare not say that I fully understand it. But , the conventional heat treatment of commonly used types of steel, I have learned a little bit, but I don’t know which one Section Chief Xiang is asking about.”

Xiang Jiyong looked around, then pointed to a piece of equipment next to him, and asked Qin Hai, Do you know what this piece of equipment is for?

Qin Hai glanced at it, and immediately replied: I have seen this in school. This is a high-frequency induction hardening furnace, which is used for surface hardening of parts.

Well, what does surface quenching mean? Xiang Jiyong asked again.

Of course, Qin Hai couldn't help such a question. He didn't even bother, and answered fluently: Surface quenching is to quench only the surface layer of the workpiece, without affecting the core of the workpiece. Under normal circumstances, surface quenching The depth is between 0.5 and 2 mm, and the processing objects are medium carbon steel and medium carbon alloy steel.”

So, why is surface quenching required? Isn't comprehensive quenching better? Xiang Jiyong continued to ask.

Qin Haidao: The depth of quenching depends on the purpose of the workpiece. Surface quenching is mainly used for parts that work under dynamic load and friction conditions, such as gears and crankshafts used on agricultural machinery. The performance requirements of these parts are that the surface has a relatively high High hardness and wear resistance, while the core maintains sufficient plasticity and toughness. Therefore, quenching must be limited to its surface, rather than comprehensive quenching.

Not bad! Xiang Jiyong had smile lines on his face. As a production section chief, he naturally knew something about conventional production techniques. However, he just knows it but doesn't know why. For example, the matter of surface quenching, he knew that it was a necessary technological link in the processing of gear parts, but it was impossible for him to say so accurately. His job is just to let the workshop operate according to the design of the technical engineer, and he won't go into the details of the principle.

How about it, Director Miao, Section Chief Xiang, Qin Hai's skills are not bad, right? Ning Mo chuckled, Qin Hai showed his face in front of Xiang Jiyong, making him feel that he also has a bright face. Anyway, he was the first person in the factory to know Qin Hai, and he was considered Qin Hai's good buddy.

Hearing Ning Mo's words, Xiang Jiyong turned his head to him, and scolded him with a straight face: Fatty, Xiaolei, you know Qin Hai, you have to learn from him, you know? Don't just know how to play cards and game consoles all day long. He is as old as you and knows so many things, look at yourself.

Uh... We actually only met Qin Hai yesterday, aren't we planning to worship him as a teacher... Ning Mo was a little timid towards Xiang Jiyong, because this production section chief has a strong grip on labor discipline. Style, although Ning Mo is the son of Ning Zhongying, Xiang Jiyong has severely deducted his salary several times.

You two go to work first, Qin Hai, come with me. Xiang Jiyong finished training Ning Mo and Miao Lei, sent them away, and then said to Qin Hai.

What orders does Section Chief Xiang have? Qin Hai asked.

Just follow me. Chief Leng is waiting for you in Director Miao's office. Xiang Jiyong said.

The three of them came to the director's office located in a corner of the workshop together, and Leng Yuming, the technical section chief, was indeed sitting in the room. After chatting with Xiao Dongping yesterday, Leng Yuming was thinking about improving the quality of the rotary tillage blades. After thinking about it all night, he took Xiang Jiyong to the casting workshop to discuss with Miao Funan as soon as he got off work today. Unexpectedly, Qin Hai also happened to be Being assigned to the foundry workshop, Miao Funan and Xiang Jiyong went to Qin Hai for the examination.

This is Leng Yuming, the technical section chief of our factory. He graduated from Harbin Institute of Technology in the 1960s. He is a genuine college student. Xiang Jiyong first introduced Qin Hai, hoping to use Leng Yuming's background to make Qin Hai The sea bluffed.

Qin Hai has always had a bit of respect for college students in the 1960s, let alone those who came out of such an awesome school as Harbin Institute of Technology. He nodded to Leng Yuming and said, Section Chief Leng is a senior, I'm just a primary school student.

Leng Yuming waved his hand, filtered out Qin Hai's compliments, picked up a rotary tiller blade from Miao Funan's desk, and said, Listen to Lao Xiao, when you were drinking with him last night, you said something How to improve the quality of the rotary tillage blades in our factory?

Qin Hai also guessed that the intention of Xiang Jiyong and Leng Yuming's visit must be related to what he said to Xiao Dongping, so he nodded and said, Yes, but last night I just said that there is such a possibility.

What about now? Xiang Jiyong heard the mystery in Qin Hai's words, and couldn't help asking.

Qin Hai smiled and said, Now I'm basically sure that it can be done.

Why? Several leaders were shocked by Qin Hai's wild words, and Leng Yuming was helpless, but this young man dared to say that he could do it.

Qin Haidao: According to the information I have read, for the wear parts such as rotary tillage blades, the commonly used foreign processing technology is to perform high-frequency induction surfacing on the blade edge. Yesterday I was not sure whether our factory has such I just found out that our factory has a high-frequency induction furnace after being tested by section chief Xiang. With this kind of furnace, high-frequency induction surfacing can be done with a little modification, so I said it can be done.

Do you know high-frequency induction surfacing? Leng Yuming looked at Qin Hai with blurred eyes. He has found a treasure. This young man is really a treasure.

Leng Yuming has also seen the technology of high-frequency induction surfacing in a magazine, and has a general understanding of its principle. But how to do it, especially what kind of equipment, he has no idea. In an era without the Internet, it is more difficult to find some scientific and technological information than to go to the sky. As soon as Qin Hai uttered this word, he knew that Qin Hai's thinking was correct. If the cutting edge of the blade could be treated with high-frequency induction surfacing technology, it is entirely possible to increase the service life of the blade by half.

The only question now is how much Qin Hai knows about this technology.

Qin Hai saw Leng Yuming's doubts. He casually pulled a stack of letter paper from the table, grabbed a drawing pencil, and directly drew a schematic diagram of the process for Leng Yuming on the paper, doing it as he drew. To explain:

Chief Leng, look, the principle of high-frequency induction hardening is... the main equipment needed for this method is a high-frequency inductor, which is also the core component of the high-frequency induction hardening furnace. In addition, an additional Fixtures, adjust the current, it doesn't cost much.

Oh! That's great! Leng Yuming slapped the table happily, I've been thinking about this matter for several months, and I can't figure out the technical details. Once you say it like this, I understand everything. By the way, Xiao Qin, where did you learn this? Does the technical school still teach this?

This... I mainly learned it by myself. Qin Hai replied, he dare not say that it was taught by the technical school, otherwise Leng Yuming would go to the technical school to inquire about it, and he would be a helper.

When I was in the technical school, I was more interested in this kind of knowledge. Sometimes I would go to the provincial library and the library of the industrial university to read some miscellaneous books. That's what I saw at that time. Qin Hai said in a concealed manner.

What book is it? Can you borrow it again? Leng Yuming asked.

Qin Hai shook his head: I'm a very complicated reader, and I was too busy memorizing the principles, but didn't remember the title of the book. However, I can guarantee that these principles should be correct.

Of course it's true. I knew the principle was right as soon as I heard it! Leng Yuming said with certainty, I just haven't been exposed to this kind of technology in the past. I saw the name in a magazine, but I didn't explain it clearly. Xiaoqin, you With this explanation, I understand everything. Lao Miao, this little Qin is a treasure, it's a pity to put him in your workshop, I'll transfer him to our technical department.