"What are you talking about? So happy. Cai Zhongming walked in.

"Didn't talk about anything, just fixed the TV." Cai Xueying hurriedly replied, paused and said, "Dad, Zhou Jianhua is very powerful!" It was fixed so quickly. ”

"Hmmm! Xiao Zhou is really not simple, I remember Director Chen also said that you are just a junior high school student, it is said that you have learned all this knowledge by yourself in your spare time, is that true? Cai Zhongming followed his daughter's words and asked Zhou Jianhua.

"Yes! I'm almost graduating from junior high school. Actually, it's nothing, I just happened to learn something about it. Zhou Jianhua said modestly: "But if Secretary Cai has any problems with mechanical or electronic equipment in the future, you can talk to me, maybe I can help a little." ”

"Good! I remember your words, hahaha...... Director Chen said that a middle school student has made such great achievements in just a few days, and he said such an exaggeration, I couldn't believe it, but today I saw you repair the TV so neatly, seeing is believing! Cai Zhongming also knows that talents are rare, and his love for talents is overflowing.

"Hey! I said Lao Cai, didn't you come to call them to eat? Why are you standing still here? If you don't hurry up, the food will be cold. Cai's mother also came to the door at this time, and she was still wearing an apron for stir-frying: "Xiao Zhou, come to eat, let's talk while eating." ”

"Hehe, look at me, I only care about talking, and I have forgotten the orders of the head of our family." Cai Zhongming made a joke and said, "Let's go!" Xiao Zhou, take two sips with me! ”

"Dad, isn't that okay? He's still a student! Cai Xueying objected.

"Drink less, it's okay! Hehe...... "Cai Zhongming is quite interested today, but he doesn't want to give up the opportunity to drink a little wine." Tonglin Coal Mine is the primary income-generating department of Tonglin Commune, and now that there is such a technical genius in the mine, Cai Zhongming is happy in his heart, and now that this genius has come to the door by himself, how can he give up the opportunity to drink and talk.

Everyone entered the living room and sat down separately, and when Cai Zhongming poured wine for Zhou Jianhua, Zhou Jianhua only symbolically asked for a small half glass of liquor, and Cai Zhongming did not force him to drink more. Everyone chatted while eating, Zhou Jianhua was not restrained, he would say whatever everyone asked, and occasionally make some jokes, but he was also happy.

Cai's mother would whisper from time to time to remind Cai Zhongming to drink slowly and drink less, and after a few times, Cai Zhongming joked with Cai's mother: "I said chief!" Why are you worried so much all the time? If my body has been working for the country for more than ten or twenty years of revolution, there will be no problem at all! ”

"Dad, you need a good body to do a revolution, and you need a good body to live a good life, Mom is right to let you drink less! It's not just the country that needs you, our family also needs you, and it's not just a matter of ten or twenty years! Cai Xueying interjected.

"Yes, hehe, what Xiaoying said makes sense, I still have a long way to go, and I will help you take your children and grandchildren in the future!" Cai Zhongming looked at Cai Xueying and joked.

"Dad......!" Cai Xueying protested shyly and pouted coquettishly.

"Alas! I don't know when your brother will be able to make me a grandfather......" Cai Zhongming muttered.

"Brother, I haven't listened to your teachings since I was a child and is determined to contribute to the country, now is the time for him to show his ambitions, why are you so anxious?"

"So, I can't count on him for a while! So...... Hehehe......" Cai Zhongming looked at his daughter again and was happy.

"Mom! Look what's wrong with Dad today, you shouldn't let him drink! Cai Xueying blushed and protested seriously.

"Lao Cai! Say no more, there are guests! Cai's mother also objected.

"Oh! Hehe, Xiao Zhou, I'm sorry. My son Cai Shang, graduated from the National University of Defense Technology last year, studying mechanical engineering automation, similar to what you learned, I thought of him when I saw you today......" Cai Zhongming looked at Zhou Jianhua with a kind face: "Don't talk about him, come!" Xiao Zhou, let's drink! ”

"Secretary Cai is thoughtful, understandable...... It's the same thing I said before: If you need me for anything mechanical or electronic, just speak, and I will do my best! Your children contribute to the cause of national defense, just like I am supporting the army and supporting the family! Ha Lu Ha ...... I salute you! Zhou Jianhua stood up and tilted his neck, drying up the little wine left in the wine glass.

In fact, Zhou Jianhua listened to Cai Zhongming's words and his heart was also very uneasy, in his previous life, as a military worker, why didn't he also contribute his youth to the country's national defense, this wine should be remembered for his years when he was like a song.

"Secretary Cai! Is Secretary Cai here? Suddenly, someone outside was calling for the door, Cai Xueying went out and opened the door, and quickly led two people into the house.

"Secretary Cai is eating? Oops, we couldn't have come at the right time. A man in his 40s greeted him.

"Director Fan! Come on, let's take a sip together! Cai Zhongming invited.

"Uh...... Secretary Cai, I won't drink the wine, I'm here to report something to you...... Oh, there's a guest? Director Fan looked at Zhou Jianhua, who was sitting on the table without squeaking, and said crampedly: "Hehe, I didn't want to disturb you when you were resting, mainly because time was a little tight......

"It's okay! Never mind! Go ahead! What's up? Cai Zhongming immediately put down his chopsticks and asked with a straight face.

"That's right, you asked our machine repair factory to imitate the small rotary tiller some time ago, we have a trial production a few days ago, and the use effect is not bad. However, the quality of the rotary tiller blades produced by us is not up to the requirements, and it is too far from the rotary tiller produced by the state-owned factory...... We compared the blades produced by the state-owned factory, and our rotary tiller of the same model and specification is similar in structure, material and size...... So, I think our problem is still a problem of craftsmanship, and our craftsmanship level is not up to ......."

"Oh...... So, that means we can't produce it ourselves? Cai Zhongming asked with a frown.

"Yes, unless...... Unless we can go to the state-owned regular agricultural machinery factory to find a relatively high-level master to guide, perhaps we have to add some process equipment...... But that's not realistic...... I really can't help it, so I'm here to tell you about this. I'm afraid that time will drag on, and we will still not be able to produce it ourselves, and then I will want to temporarily ask the supply and marketing cooperatives to provide us with state-owned factory knives, and I am afraid that it will be too late, and we will miss the spring ploughing. ”

"Have you tried everything you can think of?" Cai Zhongming asked.

"Yes, if there is a way, I will not give up easily. I came here today to report to you very helplessly and ashamedly, and we have not been able to complete the task you assigned...... These days, Master Zuo and several other masters are engaged in trial production in the factory day and night, and you can see that his eyes are red......" Director Fan turned his head and looked at the bloodshot master sitting next to him:

"Master Zuo has been a blacksmith for decades, and he has also studied metal processing and heat treatment in a state-owned factory for a period of time, and knows how to read mechanical drawings, so he is the best and most experienced master in our factory."

Master Zuo heard Director Fan introduce himself to Cai Zhongming, so he owed Cai Zhongming a debt to say hello.

"Oh...... You have worked hard......" Cai Zhongming also nodded to Master Zuo, and muttered: "If we can't produce it ourselves, then we have to buy rotary tillage knives from other state-owned factories through the supply and marketing cooperative...... It's going to cost a lot of money......"

Zhou Jianhua saw that everyone was silent, so he interjected and asked, "Director Fan, what does the rotary tiller on the rotary tiller you just said look like?" ”

"This model we copied is a slightly spiral, curved blade." Director Fan didn't know Zhou Jianhua, but since he was a guest at Cai Zhongming's house, Director Fan certainly didn't want to snub him.

"Did you bring the drawings?" Zhou Jianhua asked again.

Hearing Zhou Jianhua ask about the drawings, Director Fan couldn't help but be stunned, and said that this baby's curiosity was not ordinary, and then turned his head and gave Master Zuo a look. Master Zuo lazily took out a piece of paper folded into a very small piece of paper from his clothes pocket, walked over and handed it to Zhou Jianhua. Zhou Jianhua took the piece of paper and unfolded it, it turned out to be a sketch, on which a few schematic drawings of the rotary tiller and some size data were simply drawn.

After listening to Director Fan's introduction just now, Zhou Jianhua had determined that their problem was heat treatment again, so he asked, "What kind of material do you use?" ”

"It's a scrap tractor leaf spring steel that's been recovered." Director Fan looked at Cai Zhongming with a suspicious look on his face and continued to answer.

Although Cai Zhongming heard Chen Guodong talk about Zhou Jianhua's situation, and knew that Zhou Jianhua knew mechanical things, he was not sure how much Zhou Jianhua knew, and now he saw the suspicious eyes of Director Fan, so he explained: "Oh, this young man's name is Zhou Jianhua, and he is a ...... of the Tonglin Coal Mine Machinery Repair Class."

In the machine repair class of Tonglin Coal Mine, Director Fan is a little knowledgeable. Tonglin Coal Mine and the Tonglin Machinery Repair Factory where he is located belong to the social-run enterprises of the Tonglin Commune, but the Tonglin Coal Mine is not only the primary enterprise of the Commune, but also has relatively high technical requirements, so Director Chen of the Commune Management Committee personally went out to serve as the mine manager, and the mechanical repair class of the coal mine also hired retired masters from the state-owned machinery factory exceptionally, while all the members of other social-run enterprises such as the Forest Machinery Repair Factory and the Tonglin Drilling Team were only selected from the members of the commune.

"Oh......" Director Fan thought to himself, such a young man, probably the apprentice of their mechanic class.

"Director Fan, what kind of materials do you use to make this rotary tiller?" Zhou Jianhua asked again:

"It's all made of spring steel plates from scrapped tractors." Director Fan replied while thinking, a young man asked what was the use of these, it was too self-righteous! But with Secretary Cai's face, it's not good not to cooperate.

"Oh, spring steel for tractors...... This era...... The main thing should be 60Si2Mn spring steel, right? To say that this steel is not bad...... But this steel processing process is a bit demanding on equipment, I guess you don't have large-tonnage forging machines, stamping machines, shearing machines and other equipment, if you have, you have to have molds, you can't have ......" Zhou Jianhua covered his face with his hands and closed his eyes slightly, trying to recall some information he had in his previous life.

To put it mildly, Zhou Jianhua in his previous life is still familiar with 60Si2Mn, a silicon-manganese spring steel, which is a very typical steel model, which is widely used, not only all kinds of transportation equipment, including various springs and shock absorption systems, but also in military equipment.

Zhou Jianhua was talking to himself, asking and answering himself, and the eyes of everyone in the room fell on Zhou Jianhua's body, and after about half a minute, Zhou Jianhua's eyes swept to Director Fan and Master Zuo again, and said: "So when you are making this rotary tillage, are you just doing two things: one is manual hot forging and the other is heat treatment?" ”

"Yes." Director Fan replied, and said in his heart, what else can we do if we don't do this, and any worker in our machine repair factory knows it.

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