"The one on the left is Miao Lei's father, and the one on the right is Section Chief Xiang, Xiang Jiyong." Ning Mo quietly introduced the two people who came over to Qin Hai.
Qin Hai nodded, stepped forward and said to Miao Funan: "Director Miao, I am a technical school student just assigned this year. I study casting. The Labor Department asked me to work as a sand foundry in the casting workshop. This is my job."
letter of introduction.”
With that said, Qin Hai handed Miao Funan the letter of introduction from the Department of Labor and Management. Miao Funan took the letter of introduction, exchanged a look with Xiang Jiyong calmly, and then said: "Oh, your name is Qin Hai, and I
Let me ask you, what did you learn in technical school?"
Qin Haidao: "I majored in casting, and I also learned some heat treatment. In addition, I usually like reading, so I know a little bit about things related to material properties."
Qin Hai said this because he wanted to leave a hole for himself. Yesterday, he showed his skills in front of Xiao Dongping. He could judge the quality of steel just by visual inspection and sound identification. This kind of ability cannot be explained by studying in a technical school.
He said that he usually likes reading, so he learned some extra things, so that he could find an excuse for the various knowledge he possesses.
"Oh? Young man, you are not old, but your tone is not small." Xiang Jiyong interjected without losing the opportunity. He came to the foundry workshop today just to find a chance to try Qin Hai's skills. Now Qin Hai is uttering wild words.
, Xiang Jiyong just seized this opportunity to conduct an examination of Qin Hai without revealing anything.
"Uncle Xiang, dad, Qin Hai is really capable." Miao Lei said to Xiang Jiyong and Miao Funan, "He can do quenching, and he does it very well."
Miao Lei was eager to recommend Qin Hai to his father and Xiang Jiyong, but unexpectedly fell into Xiang Jiyong's hands. He followed Miao Lei's words and asked Qin Hai, "Really? Do you know about quenching?"
Qin Hai felt like he was on a pirate ship. Miao Lei was so talkative that he put him on the fire. He didn't know what the expressionless production section chief was thinking, so he could only say vaguely.
: "Chief Xiang's words stopped me. The quenching process is extensive and profound, so how can I say that I fully understand it. However, I have learned some of the conventional heat treatment of commonly used types of steel, but I didn't know what Section Chief Xiang was asking.
Which one is it?"
Xiang Jiyong looked around, then pointed at a piece of equipment next to him and asked Qin Hai, "Do you know what this piece of equipment is used for?"
Qin Hai took one look and immediately replied: "I have seen this in school. This is a high-frequency induction quenching furnace, which is used for surface quenching of parts."
"Well, what does surface quenching mean?" Xiang Jiyong asked again.
Of course, such a question could not stump Qin Hai. He answered fluently without even a little stirring: "Surface quenching is to quench only the surface layer of the workpiece without affecting the center of the workpiece. Under normal circumstances, surface quenching is
The depth is between 0.5 and 2 mm, and the processing objects are medium carbon steel and medium carbon alloy steel."
"So, why do you need surface quenching? Isn't it better to fully quench?" Xiang Jiyong continued to ask.
Qin Haidao: "The depth of quenching depends on the use of the workpiece. Surface quenching is mainly used for parts that work under dynamic loads 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
It has high hardness and wear resistance, while the core maintains sufficient plasticity and toughness. Therefore, quenching must be limited to its surface and cannot be fully quenched."
"Not bad!" There were smile lines on Xiang Jiyong's face. As a production section chief, he naturally knew something about conventional production techniques. However, he only knew it but didn't know why. For example, surface quenching
He knew that this matter was a necessary process for the processing of gear parts, but it was impossible for him to say it so accurately. His job was just to let the workshop operate according to the design of the process engineer of the Technology Department. As for the
He would not delve into the underlying principles.
"How about it, Director Miao, Section Chief Xiang, Qin Hai is pretty good, right?" Ning Mo laughed. Qin Hai showed his face in front of Xiang Jiyong, which made him feel proud. No matter what, Qin Hai showed his face in front of Xiang Jiyong.
He said that he was the first to know Qin Hai in the whole factory, and he was Qin Hai's good friend.
Xiang Jiyong heard Ning Mo speak, turned his head to him, and said with a straight face: "Fat man, Xiao Lei, you know Qin Hai, you have to learn from others, you know? Don't just play cards and game consoles all day long.
People are as old as you and know so many things, just look at yourselves."
"Uh... we actually just met Qin Hai yesterday, aren't we planning to take him as our teacher..." Ning Mo was a little timid towards Xiang Jiyong, because this production section chief has a strong hand in labor discipline and so on.
In terms of style, even though Ning Mo was the son of Ning Zhongying, his salary was severely deducted several times by Xiang Jiyong.
"You two go to work first, Qin Hai, you come with me." Xiang Jiyong finished training Ning Mo and Miao Lei, sent them away, and then said to Qin Hai.
"What are Section Chief Xiang's orders?" Qin Hai asked.
"Just follow me. Section 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 the corner of the workshop. As expected, the technical section chief Leng Yuming was sitting in the room. After chatting with Xiao Dongping yesterday, Leng Yuming was thinking about improving the quality of rotary tillage blades.
Su, as soon as he got to work today, he took Xiang Jiyong to the foundry workshop to discuss with Miao Funan. Unexpectedly, Qin Hai happened to be assigned to the foundry workshop, and that's how Miao Funan and Xiang Jiyong went to take the exam for Qin Hai.
"This is the technical section chief of our factory, Leng Yuming. He graduated from Harbin Institute of Technology in the 1960s and is a genuine college student." Xiang Jiyong first introduced Qin Hai, hoping to use Leng Yuming's background to accuse Qin Hai.
The sea bluffs.
Qin Hai has always had a lot of respect for college students in the 1960s, let alone those who came from a prestigious school like Harbin Institute of Technology. He nodded to Leng Yuming and said: "Chief Leng is a senior, I am 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: "I heard from Lao Xiao that when you were drinking with him last night, you said yes
How can we improve the quality of our factory’s rotary tillage blades?”
Qin Hai also guessed that the purpose 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 was such a possibility."
"What about now?" Xiang Jiyong heard the mystery behind Qin Hai's words and couldn't help but ask.
Qin Hai smiled and said: "Now I am basically sure that it can be done."
"Why?" Several leaders were shocked by Qin Hai's arrogance, and even Leng Yuming was helpless. This young man actually dared to say that he could do it.
Qin Haidao: "According to the information I have read, for wear parts such as rotary tillage blades, the commonly used processing technology abroad is to carry out high-frequency induction surfacing on the blade edge. Yesterday I was not sure whether our factory has this
Equipment, Section Chief Xiang tested me just now, and I discovered that our factory has a high-frequency induction furnace. With this furnace, we can do high-frequency induction cladding with a little modification, so I said it can be done."
"Do you know about high-frequency induction cladding?" Leng Yuming looked at Qin Hai and his eyes became a little blurry. He found a treasure. This young man is really a treasure.
Leng Yuming had also seen the technology of high-frequency induction cladding in a magazine and had some understanding of its general principles. But he had no idea how to do it, especially what the equipment looked like.
In an era without the Internet, it was extremely difficult to find some scientific and technological information. As soon as Qin Hai said this word, he knew that Qin Hai's idea was right. If high-frequency induction cladding technology could be used to
By treating the cutting edge, 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 process diagram for Leng Yuming on the paper, while drawing.
Explanation:
"Chief Leng, look at it, the principle of high-frequency induction cladding is... The main equipment required for this method is a high-frequency inductor, which is also the core component of the high-frequency induction quenching furnace. In addition, an additional
Clamp, adjust the current, it doesn't cost much."
"Oh! That's great!" Leng Yuming slammed the table with joy, "I have been thinking about this matter for several months, and I can't figure out the technical details. When you say it like this, I understand everything.
By the way, Xiao Qin, where did you learn this? Do technical schools still teach this?"
"This... I mainly taught it by myself." Qin Hai replied. He didn't dare to say that it was taught in a technical school, otherwise Leng Yuming would tell the truth when he came to the technical school to inquire about it.
"When I was in technical school, I was more interested in this knowledge. Sometimes I would go to the provincial library and the library of the University of Technology to read some miscellaneous books. This is what I saw at that time." Qin Hai said in a concealed manner.
"What kind of book is it? Can you borrow it again?" Leng Yuming asked.
Qin Hai shook his head: "I am a very miscellaneous person who reads books. I only focused on memorizing the principles and did not remember the title of the book. However, I can guarantee that these principles should be correct."
"Of course you are, I knew the principle was correct as soon as I heard it!" Leng Yuming said affirmatively, "I just haven't been exposed to this technology in the past. I saw the name in a magazine, but I didn't explain it clearly. Xiao Qin, you
With this explanation, I understood everything. Lao Miao, this Xiao Qin is a treasure. It would be a pity to leave him in your workshop. I will transfer him to our technical department."