The process of casting a workpiece in a factory is as follows: a model of the workpiece is made of wood, and then the mold is wrapped in sand, binder and water. After the sand mold raw material is solidified, the wooden mold is removed to form a sand mold cavity. Subsequently, 1,300 degrees of molten iron is injected into the sand cavity and cooled to form a cast iron workpiece.

Compared with the carpenters in the countryside, the technical level of the wood molders is more excellent, because the precision requirements of the wood molds are much higher than that of ordinary furniture. In the factory, workers often ask the factory to help with furniture at home, of course, although everyone is a colleague, the cost of making furniture is also to be paid.

Hu Yang is a wood model worker at Hanhua Machinery Factory, in his 40s, wearing a pair of short-sighted glasses, looking a little gentle, which is very inconsistent with his identity. Lin Zhenhua also knew Populus euphratica in the past, he didn't know when Populus euphratica came to work in Hanhua Machinery Factory, and he had the impression that since Lin Zhenhua was sensible, there was already a poplar in the factory.

Hu Yang's wife's name is Qin Ying, who also works as a statistician in the container workshop at the Hanhua Machinery Factory. In Lin Zhenhua's mind, the impression of the Hu Yang family is very vague, as if they have never participated in any disputes in the factory, nor have they received any commendations or punishments, in short, they are the kind of extremely unknown family.

There is only one thing that can attract the attention of others, that is, their children do not follow Hu Yang's surname, but Qin Ying's surname, and they are called Qin Bo and Qin Tao respectively. In Hanhua Machinery Factory, of course, there are children with their mother's surname, but generally speaking, there are multiple children, one or several of whom have their mother's surname, and it will not be like Hu Yang's family, where all children follow their mother's surname. Some people speculate that Populus euphratica may be the son-in-law of the Qin family, so the child born should follow the surname of the father-in-law's family. These do-gooders also deliberately wanted to inquire what kind of family Qin Ying's family was, but they were disappointed, whether it was Hu Yang or Qin Ying, they all seemed to jump out of the cracks in the stones, and they couldn't find their family background information at all.

Qin Bo and Qin Tao are not very old, and they are six or seven years old apart from Lin Zhenhua, so Lin Zhenhua has no friendship with them. However, he has also heard that the two sisters and brothers in the factory children of the primary school study results are unusually good, if the future of Hanhua Machinery Factory can be admitted to the key universities, then the two sisters and brothers should be the most promising candidates. Everyone said that the two of them had a lot of money, and they couldn't imagine that the two children were so promising, and they could be regarded as standing out for their parents.

Now, Lin Zhenhua and Zhao Yongqun are standing in front of Hu Yang, begging him to help make a few wooden molds.

"Master Hu, see if you have time to do me such a favor." Lin Zhenhua said as he put an unopened box of Double Happiness cigarettes in Populus Hu's toolbox.

Hu Yang glanced at the cigarette, but did not refuse, but took the drawing handed over by Lin Zhenhua and looked at it, still thinking about something while looking at it. Lin Zhenhua asked someone to do something, but naturally he didn't dare to urge, just stood aside and waited.

Hu Yang looked at it for a while, stretched out his hand, and said to Lin Zhenhua: "What about your other drawings, I'll take a look at it." ”

"No, that's all." Zhao Yongqun hurriedly said, Lin Zhenhua asked him to help cast these pieces just now, so he didn't know that there were other drawings.

Lin Zhenhua hesitated, and then took out a few other drawings from his pocket, which were a few parts he planned to process in the metalworking workshop after work, because they didn't need to be cast, so he didn't show them to Zhao Yongqun. Now Hu Yang asked to see his other drawings, he didn't know what the purpose was, but he didn't have the intention of hiding it, after all, it was not possible to ask someone to do something, and it was not possible to hide it.

Hu Yang took the drawing, looked at it again, shook his head, pointed to a place on the drawing and said to Lin Zhenhua: "Xiaolin, the design on your drawing is a bit of a problem, the X-axis output power of the universal milling machine is not enough, this group of gears may not be able to drive the universal indexing head, it is best to change the combination of gears." ”

Lin Zhenhua opened his mouth wide, and it took a long time to come back to his senses: "Master Hu, do you know what I'm going to do?" ”

"Isn't it just a simple gear hobbing machine with a set of gears added to a universal milling machine? This approach was proposed 20 years ago. Hu Yang said lightly.

"Has anyone in our factory ever done this?" Lin Zhenhua felt full of frustration, and originally wanted to show off his skills, but Pomeranian smiled, but he couldn't imagine that he was picking up other people's leftovers.

Hu Yang shook his head: "No one in our factory has ever done this, and I have only seen someone introduce it in a book." ”

"However, you can actually think of the problem of output power, but I ignore it." Lin Zhenhua was very unconvinced, he forgot that he was just an 18-year-old young worker, and he was also a general worker. Although Populus euphratica is a carpenter, he can be regarded as a mechanic, and besides, the age is there, and the salt he has eaten is ...... Ahem, much more salt than I've eaten myself.

"What, you ignored?" Hu Yang bit the word "you" very hard, and he looked at Lin Zhenhua with serious eyes, "Xiaolin, you mean, you designed this drawing?" ”

Lin Zhenhua nodded: "It's me." ”

"Who is your master?"

"I ...... My master is Master Zhong Rulin. ”

"Master Zhong? Isn't he a porter? ”

"That's right, I'm in the moving class of the metalworking workshop right now."

"You're a porter, how did you come up with the idea of modifying a milling machine? And, how could you have thought of doing that? No, you must have seen it somewhere, right? Confused, Poplar threw out a string of questions.

Lin Zhenhua also knew that he was indeed a bit against the sky in doing so, an 18-year-old veteran, a glorious porter, actually designed a set of simple gear hobbing machine, who looked at it, it was not believed.

"Master Hu, actually, this is really not my own creativity, I learned it in the army, and there is a device like this in the repair institute of our army, I saw it at the time, so I ......"

Hu Yang sighed and said, "I said, if you hadn't seen it, you wouldn't have thought of doing this." However, you have a good grasp of mechanical drawing, and it is very standardized, as if you were born in a professional class. Do you still have to learn this in the army? ”

Lin Zhenhua had no choice but to find out the rhetoric he used to deceive He Haifeng in the past: "Well, this is actually taught to me by a professor from Huaqing University." He was a rightist, sent to the countryside, and lived near our troops. I met him by chance, and he taught me all these techniques. ”

"A professor at Huaqing University? What's his name? Hu Yang asked.

"It's called Xia Hanmin."

"Xia Hanmin? I've never heard of it. Hu Yang muttered to himself.

Lin Zhenhua's eyes flashed with gold stars: "Master Hu, you won't say that you know all the professors in Huaqing University, right?" ”

Hu Yang realized that he was a little speechless, and hurriedly said: "Of course not, I just like to read, so if I am a more famous professor at Huaqing University, I must have some impressions." ”

Lin Zhenhua said: "This Professor Xia may also use a pseudonym, he is a rightist, maybe he will be incognito." Unfortunately, he's gone, and I can't ask him anymore. He had to say the last sentence, otherwise he wouldn't be able to find the professor at Huaqing University if someone asked him to find him in the future.

Hu Yang said: "What you said is also possible, then, what does the professor you are talking about, what does it look like?" ”

Lin Zhenhua thought about the appearance of the professor he had seen in later generations, and casually made up a few sentences, Hu Yang took it seriously, he pondered for a moment, and said slowly: "Xiaolin, listening to the appearance you described, it looks a bit like Professor Yao Heliang of the Department of Mechanical Engineering, is he also deceased?" ”

Yao Heliang! Lin Zhenhua was about to jump up, and after Hu Yang mentioned this, he really remembered that when he was describing, he unconsciously said it in the image of his graduate supervisor, Professor Yao Heliang. During that decade of catastrophe, Professor Yao did decentralize, but of course, he did not die during the devolution. Lin Zhenhua never expected that in the wooden mold class of Hanhua Machinery Factory, someone could think of Yao Heliang from the few words he described.

"Master Hu, let me ask you a question, who else could be riding a white horse besides the prince?" Lin Zhenhua asked.

Hu Yang was stunned for a moment, thought for a while, and replied: "Tang Seng also rides a white horse, right?" ”

"Ahh Lin Zhenhua didn't know whether he was happy or worried, "Then let me ask you another question, who else could it be besides angels with wings?" ”

"Birdman?"

Lin Zhenhua thundered: "I'm dizzy, Lao Hu, what is your QQ number, do you usually use Baidu or Google, what year did you pass through?" ”

Populus euphratica was inexplicable: "Xiaolin, what are you talking about?" What QQ? What ferry? Also, what do you say to wear? ”

Lin Zhenhua patted his head and asked, "Lao Hu, you really didn't cross over?" ”

"What do you mean by crossing?" Populus euphratica doesn't understand it at all.

Lin Zhenhua was relieved: "It's okay, Master Hu, I thought about it just now." By the way, how can you be so familiar with Huaqing University? This Yao you are talking about...... What professor, is he famous? ”

Hu Yang said: "Oh, I'm also guessing, Professor Yao is a relatively well-known mechanical expert, I once saw his photo in the newspaper, of course, that was more than 10 years ago." ”

"Master Hu, who are you, how can you know so many things?" Lin Zhenhua got to the bottom of it, and today's performance of Populus euphratica was enough to surprise him.

Hu Yang smiled slightly: "I'm just an ordinary worker, to say, I like to read some books more than others." None of this is enough to mention. Xiaolin, the gear hobbing machine you designed is very good, you can modify it a little, and I will make a wooden mold for you right away for these few pieces you want. ”

Saying goodbye to Hu Yang, when Lin Zhenhua and Zhao Yongqun walked out, Lin Zhenhua asked Zhao Yongqun in a low voice: "Yongqun, what is the origin of Master Hu?" I look at him like that, it seems to have a bit of background. ”

Zhao Yongqun said: "I don't know the background or anything, but Master Hu likes to read, and everyone knows it." We have a lot of technical problems, and the engineers in the factory can't solve them, and sometimes we have to consult him. In fact, the factory office has always wanted to transfer him to the technical department as a technician, but he resolutely refused, so he was willing to be a wood molder. ”

"I see." Lin Zhenhua nodded slightly. Indeed, there is such a kind of person among the workers, who is gifted and intelligent, and who loves to study, although he is not highly educated, but his technical level is extraordinary. Lin Zhenhua still remembers that when he was studying at Huaqing University in the past, there was a handyman selling steamed buns in the canteen, who used his business time to study English hard, and even passed the English level 4 exam, and his oral pronunciation was stronger than that of ordinary students. Hu Yang is probably a typical example of this kind of self-taught.