industrial overlord

Chapter 101 Process Route
It's easy to say a word about fighting spirit, but it still needs a lot of solid work to actually process this shaft.The Provincial Department of Light and Chemical Industry attached great importance to this matter, and transferred several process engineers from other enterprises to work together with Fan Shibin and others to compile the process documents for the main shaft of the ice machine from scratch.

As the saying goes, laymen watch the excitement, and experts watch the way.In later generations, there are many so-called "financial commentators" who talk about it, and they always say "Chinese people lack innovative spirit". In fact, these people have never even heard of the word "craftsmanship".

For laymen, it is difficult for them to understand why a shaft is so difficult to make. In their eyes, it is nothing more than a matter of cutting an iron rod.Some people even talk about the successful deeds of a certain agricultural machinery factory imitating a certain artifact. It seems that if a car or an airplane can move, it means success.

In the industry, it is not difficult to create the shape of a part. At the worst time, let the workers file with a file, and a shape can also be processed.The most difficult thing is to realize the technological requirements of processing so that the performance of the components can reach the best state.

Taking a shaft as an example, its blank can be cast or forged. The shape of the blank produced by the two is exactly the same, but the material properties are quite different.

The casting process is to inject molten steel into the mold and let it cool and form.In the workpiece formed in this way, the grain volume inside the material is relatively large, and the toughness is insufficient.Forging is to place the blank under a hydraulic press of thousands or even tens of thousands of tons, and knead it into the expected shape like kneading dough.Under high pressure, the grains of the material are refined and the density increases, making it tougher.

If you don’t understand this difference, just imagine the process of kneading the dough. The dough that has been kneaded repeatedly may look exactly the same as the unkneaded dough, but the difference in taste is very obvious.

In the field of aviation, the main beam of a large aircraft is the most stressed part in the entire aircraft. This type of main beam is forged and formed in tens of thousands of tons of die forging machines. Only in this way can it withstand repeated use. Incoming fatigue damage.If there is no such die forging machine, use other processes to manufacture this kind of main girder, of course the aircraft can also be made, and it can also "fly into the sky".However, its structural parts are prone to aging. Other aircraft may last for decades, but this type of aircraft will be scrapped within a year or two.

The progress of craftsmanship is hard for outsiders to see.Financial commentators generally only care about whether you have built an airplane, but no matter what process you use, it is impossible for their eyes to see the size of the grains in the main beam material.Only those who work hard will know that those superficial things are actually of little value. The sign of industrial level is not the sign on the car head, but the craftsmanship level of each ordinary part.

By the way, in 2010, in Kunshan, Suzhou, a 10-ton hydraulic die forging machine had been erected. This was the largest die forging machine in the world up to that time, and it represented China's The processing capacity has reached the world-class level.

The first production process of the main shaft that Hanhua Factory is currently working on is the die forging of the blank.The Hanhua Factory does not have such a large forging machine, but there is a military system in the province.On the second day after Lin Zhenhua returned from Beijing, a Jiefang truck with the words "Changhong Machinery Factory" painted on the door drove into the gate of Hanhua Factory. The truck was loaded with four forged blanks, and That broken Nissan spindle.

"Thank you so much." Zhu Tiejun said to the technical section chief of Changhong Factory who came to deliver the goods.

The head of the technical section was named Yan Yuanhe, who was in his early forties, thick and strong, not quite a scholar.While shaking hands with Zhu Tiejun, he said: "This is what we should do. We also hope that you can defeat the little devil and give us Chinese a sigh of relief."

Zhu Tiejun said politely: "I'm really sorry, but let Section Chief Yan deliver the parts himself."

Yan Yuanhe said with a smile: "I asked for this on my own initiative, and I also want to see with my own eyes, how did you process this spindle with a special-shaped surface? To be honest, the processing of special-shaped surfaces is very important for our military industry system. , is also an unattainable technology, one of you...hehe, with all due respect, a local medium-sized enterprise can actually do this?"

Zhu Tiejun said: "I don't quite understand these specific technical issues. Let Lin Zhenhua, deputy chief of our technical department, explain to you later. However, he is very busy now, and he is calculating the processing curve."

"Can I go and see how you guys do it?" Yan Yuanhe asked.

"Of course." Zhu Tiejun said, "We still need to ask Section Chief Yan to guide our work."

While speaking, Luo Qinsheng had already brought several workers over, unloaded the blanks and the broken shaft from the cart, pushed them with a small cart, and walked towards the metalworking workshop.Zhu Tiejun and Yan Yuanhe followed them and also walked into the metalworking workshop.

In the metalworking workshop, a space has been vacated as a working area for the main axis research project.

In the middle of the field, there is a gantry milling machine and a heavy-duty horizontal lathe, which are two machine tools that are ready to process the main shaft.Peng Gang, Zhou Houcheng and Wei Jingwen were surrounding the machine tool, discussing how to modify the machine tool to meet the needs of processing.After the last experiment, Wei Jingwen has already touched the doorway of numerical control transformation, but how to do it on the machine tool still needs the cooperation of skilled workers.

Fitter Sun Changyuan is currently tasked with measuring the shape of the main shaft. Seeing that the broken shaft has been delivered, he hastily led several apprentices and several technicians from the technical department to meet him, carefully lifted the broken shaft aside, and then took the vernier caliper And tools such as micrometers, to make further measurements on this shaft.His son Sun Xiaodong also followed his father step by step, honestly recording the measurement data with a pen and paper.

Prior to this, the Department of Light and Chemical Engineering had organized people to measure the broken shaft and draw up drawings.However, Lin Zhenhua and others believed that since the Hanhua factory had taken over the manufacturing task, they should test it again to ensure that they knew what they were doing.Measurement is also a technical job, and it is difficult to do it without diamonds.For such a high-speed spindle, a slight deviation will make the operation unbalanced, which may cause increased noise, and may cause a broken shaft accident.

In a corner of the field, where a piece of plywood is used to block off, there are several tables, on which there are two Apple-II computers. Lin Zhenhua and Hu Yang are typing on the keyboard, inputting a group of parameters. Go to the computer.These two computers are equipped with five-inch floppy disk drives, so much data, they have to save it once after a while, otherwise the memory will not be able to hold it.

"The older one is called Populus euphratica, a wood model worker in our foundry workshop; the young man is called Lin Zhenhua, and he is the deputy chief of our technical department." Zhu Tiejun introduced to Yan Yuanhe.

Yan Yuanhe said in astonishment: "The wood model worker is operating the computer? Director Zhu, your factory is really a hidden dragon and a crouching tiger. I don't know if you have too many talents, or your workers are too powerful."

Zhu Tiejun didn't react: "Is there a difference?"

"Of course there is a difference. There are too many talents, that is to say, he was originally a technician, but you couldn't use so many technicians, so you let him be a wood model worker. If you say that the worker is too good, it means that if you just grab a wood model worker and come out I can go to another factory to work as a technician."

Zhu Tiejun still thought for a while before he understood Yan Yuanhe's ridicule. He said with a smile: "Hu Yang is a special case. He is a person who likes to study. We once thought about transferring him to work in the technical department. But he said that he is willing to make wooden models. However, when we encounter such a major technical problem, we still have to ask him to help."

They were chatting when they saw a technician come to Lin Zhenhua and Hu Yang with a piece of paper recording the measurement data, and said something to them.Lin Zhenhua and Hu Yang exchanged glances, put down their work, and strode to the broken shaft.

Sun Changyuan handed a pair of micrometers to Hu Yang's hand, and Hu Yang took it and carefully measured it on the broken shaft.After measuring for a while, he raised his head, smiled and said to Lin Zhenhua: "Xiao Lin, I guessed right, this place is indeed the wrong measurement by the Qinghua Department."

"Uh, I don't make many mistakes." Lin Zhenhua said.

Hu Yang said: "However, this is the wrong point. The envelope model we calculated is not right. I am still thinking about what new theory Little Japan has, and why the curve is not conventional."

Yan Yuanhe was standing behind them. Hearing what Hu Yang said, Yan Yuanhe felt so magical, he couldn't help interjecting: "Comrade, you mean that you can calculate the envelope of this special-shaped surface in advance?"

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(End of this chapter)