industrial overlord

Chapter 205 Heat Treatment Process

After Cen Youjun left, Lang Dong and Ma Jie, a student from Huaqing University, came in next.Lang Dong's face was full of joy, but when Lin Zhenhua saw him, he was shocked.

"Lao Lang, why are you so thin?" Lin Zhenhua asked.

Before Lin Zhenhua went abroad, he found that Lang Dong seemed to be a little thinner, and he hadn't seen him for a month, and this feeling became more and more obvious.The original Lang Dong, although he can't be regarded as big and round, at least he is still very strong, but now, his figure has become thinner, and his face is even thinner and sunken.

"It's okay, this part is tiring." Lang Dong didn't mind, he walked to Lin Zhenhua's desk, spread out a pack of roller balls wrapped in oil paper, then looked at Lin Zhenhua and said: "Manager Lin, look , This is the bearing steel ball we made."

"Oh, it's so beautiful." Lin Zhenhua picked up a steel ball and looked at it carefully in the sunlight, "Not bad, not bad, the finish is very high."

Lang Dong said proudly: "Manager Lin, what you see is only superficial phenomena. The most important thing is that we have finally solved the problem of heat treatment of steel balls. Do you know how long our steel balls are now wear-resistant?"

Lin Zhenhua vaguely remembered that Lang Dong once told him about this problem. Due to the lack of heat treatment technology, the wear-resistant life of the steel balls produced by Xunzi is only 50 revolutions, while the steel balls on imported bicycles are 200 million revolutions.At that time, Lang Dong said that he would solve this problem. Judging from Lang Dong's meaning, could it be that he has already solved this problem?

"Why, Lao Lang, you won't tell me that the lifespan of these steel balls can reach 200 million revolutions, right?"

"What is 200 million?" Lang Dong laughed, "We tested it, and it has 250 million revolutions, which is better than the steel balls on imported cars."

"Come on, tell me how you did it." Lin Zhenhua was also interested. Does he know how meaningful a set of effective heat treatment process is to the machinery industry.

Lang Dong sat down and began to talk to Lin Zhenhua. Ma Jie sat aside and added a few words for him shyly from time to time.

Steel balls are an important part of bearings. The production of a steel ball generally goes through several steps.The first is to feed the steel wire with a specific diameter into the cold heading machine, and then punch it into a ball blank on the steel mold.Afterwards, the operation of the light ball and the soft ball is carried out, that is, the ball blank is ground to the specified ball diameter and meets a certain surface roughness requirement.

The next step is heat treatment.The heat treatment of the steel ball is very troublesome. It needs to make the inside of the steel ball achieve a certain toughness, while the surface has a certain hardness and wear resistance.The formation of wear resistance largely depends on the carburizing treatment of the surface steel.

After heat treatment, the next process is to grind the steel balls to the specified precision and finish with a grinder.The effect of this process has a lot to do with the quality of the grinding machine.Hanhua Company has a lapping machine imported from Germany, so the problem of lapping has been solved.Just now Lin Zhenhua saw that the steel balls have a high degree of smoothness. In fact, it is mainly due to the lapping machine. The effect of heat treatment cannot be observed with the naked eye.

The heat treatment process is a secret in many enterprises.If Lang Dong wants to solve the problem of heat treatment of steel balls, he can only explore by himself, and the way to explore can only be experiments.

Both Ma Jie and Du Xiangyang from Huaqing University are deeply interested in solving this heat treatment problem. They first proposed some possible directions from the material theory, and then read a large number of foreign materials, and speculated on foreign materials through some clues. Peer heat treatment method.Qian Yuanping from Hong Kong has been collecting data on the global machinery industry at the request of Lin Zhenhua a few years ago, and these materials are now piled up in the data room of Hanhua Company, which has become the basis for the research of Ma Jie and Du Xiangyang.

After the basic idea is established, the next step is to do experiments.Lang Dong personally went out and asked the workshop to produce a large number of spherical embryos, and then heat-treated them with different techniques, and then tested the heat-treatment effects one by one.

The difficulty of heat treatment is that there are so many methods to choose from.In terms of carburizing process, there are solid carburizing, liquid carburizing, gas carburizing and other methods.In terms of carburizing agents used, there are several kinds such as charcoal, activated carbon, yellow blood salt, kerosene, etc.Early carbonitriding used highly toxic sodium cyanide as a carburizing agent, so this process is also called cyanidation process.

There is also the temperature control of heat treatment, different temperatures will produce different effects.What's more troublesome is that the temperature setting is not static, but a dynamic process.For example, a certain process may require that the steel ball is first heated to 800 degrees, then cooled to 1 degrees at a uniform speed in 200 hour, kept for 2 hours, and then rapidly cooled to 20 degrees...all such Although the temperature change curve can be deduced theoretically, the effect can only be verified through experiments.

"We have done nearly [-] experiments! Now it is finally successful!" Lang Dong said excitedly to Lin Zhenhua. His face was full of excitement after success. There will be such an excited expression.

"The data of these 20 experiments are priceless." Ma Jie also said, "I have already reported to Teacher Yao. During the summer vacation, he will personally bring a team over to analyze these data. From these data, we can At least [-] different heat treatment processes can be discovered, which are suitable for various material performance requirements."

"Lao Lang, Xiao Ma, you have worked hard." Lin Zhenhua said sincerely, he turned his head to Lang Dong and said, "However, Lao Lang, you really can't work so hard. There are some things that young people like Ma Jie and the others should do. That's good, you are getting old, so take care of your health."

Ma Jie interjected from the side: "Manager Lin, you don't know. When doing many experiments, Manager Lang doesn't let me and Xiang Yang participate. He stays alone in the laboratory and burns the stove, shutting us out."

"Why?" Lin Zhenhua asked in surprise.

Lang Dong hesitated and said: "I have nothing to do anyway, such things as burning the stove are very boring, I'm afraid their young people won't be able to bear it."

Ma Jie said: "Manager Lin, that's not the case. It's because the carburizing agent we use in the heat treatment has a certain degree of toxicity. Manager Lang said that Xiangyang and I are still young, and I'm afraid that we will lose something if we deal with drugs all day long." bug."

"Old man!" Lin Zhenhua only felt an inexplicable move in his heart, "Old man, how could you do this! Young people can't be poisoned, so can you?"

Lang Dong was a little embarrassed when Ma Jie exposed the truth. He said, "Manager Lin, don't listen to Ma Jie's nonsense. Is it poisonous or not? It's been so many years for me? We used to make salt baths for steel balls. At that time, sodium cyanide was used, and the labor protection at that time was not as good as it is now, so am I fine?"

Lin Zhenhua looked at Lang Dong's face and asked, "Lao Lang, you have become so skinny, have you been poisoned?"

"It's okay, it's okay, I'm just a little tired, I'll be fine after a few days of rest."

"No!" Lin Zhenhua said decisively, "You must stop working immediately and honestly go to the hospital for a physical examination. Also, in the future, for such poisonous work, you must never stare at it from beginning to end by yourself. It needs to be done by different people, and labor protection must be strengthened.”

Lang Dong said: "Manager Lin, how can there be so many people doing these experiments now? Just find a young man, and they don't understand the situation. Besides, we have passed the heat treatment. Next, I plan to take the horse Jie and the others are going to study the protection welding process, which is used when welding the frame of the car."

Lin Zhenhua waved his hand: "Your task now is to see a doctor. Unless the hospital issues a certificate to prove that you are fine, you are strictly prohibited from entering the laboratory."

"Manager Lin, you have no right to do this!" Lang Dong became impatient, "I'm not sick, you can't stop my work."

Lin Zhenhua was also in a hurry: "Lao Lang, let me tell you, I have the right to do this. Your personnel relationship is at Xunyang Bicycle Factory, and this is where I belong to Hanhua Industrial Company. I have the right to refuse you to enter the laboratory. "

"You..." Lang Dong became dumb all of a sudden, of course he knew that Lin Zhenhua said this for his own benefit.At the same time, he also knew that Lin Zhenhua seemed to be quite talkative at ordinary times, but once he became stubborn, he would not be able to turn back.He controlled his emotions, and said in a begging tone: "Manager Lin, I know you have good intentions. Otherwise, will this work? I will go to the hospital for a physical examination, but you can't stop me from participating in the experiment. I'll just be there to guide, okay?"

Lin Zhenhua walked up to Lang Dong, patted his hand, and said, "Lao Lang, stop arguing. Products are very important, but people are more important than products. When I saw you look so thin just now, I thought there was a problem. Now Hearing what Ma Jie said, I think you must be poisoned, if you don’t get treatment quickly, the root cause of the disease will be left in the future, and it will affect the rest of your life.”

Lang Dong said: "Manager Lin, please understand my feelings. I am a bicycle maker, and my lifelong wish is to build the best bicycle. Thank you for giving me this opportunity and investing millions in research and development. A new bicycle. To be honest, for me, it doesn’t matter if my body is affected a little, and I will be fine with a little maintenance in the future. If I can make a world-class bicycle with my own hands, I will not waste my life.”

Lin Zhenhua said: "Lao Lang, I completely understand your feelings. Don't worry, no matter how much money you invest, I will let you make this bicycle. Our bicycle must be the number one in the world. However, Fan You have to eat one bite at a time, so that the green hills remain, and you are not afraid of running out of firewood. Lao Lang, I hope you go to have a good physical examination, and if you have any problems, you must be treated in time. I still have a very important thing to entrust to you Do it, you need a strong body to do it."

"What's the matter?" Lang Dong asked impatiently.

Lin Zhenhua said: "Next July, I want to organize a team to participate in the Tour de France. I hope you can be our team leader. I hope you can ride our Hanhua company's bicycles to win the Tour de France. Championship!"

　The update time is unstable these days, everyone forgive me.Oranges are really busy.

　　
　
(End of this chapter)