Chapter nine hundred and forty-eight new knowledge of the workers
"When turning a crankshaft, you have to read the drawings countless times first, which one should be turned first and which one should be turned last, whether it is the amount of grinding, or whether it is directly machined to size, whether the threads are forward or reverse, in short, you must first have a clear idea in your mind.
The plan can only be taken into action after it is determined. Even so, there is no guarantee that it is correct. It requires many experiments. Now I will tell you some knowledge that has not been taught before.
For efficient metal cutting, the material to be processed, cutting tools, and cutting conditions are the three major factors, which determine the processing time, tool life, and processing quality.
The three elements of cutting conditions: cutting speed, feed rate and depth of cut directly cause damage to the tool.
As the cutting speed increases, the tool tip temperature will increase, causing mechanical, chemical, and thermal wear.
If the cutting speed is increased by 20%, the tool life will be reduced by 1/2. The relationship between the feed conditions and the back wear of the tool occurs within a very small range. However, when the feed amount is large, the cutting temperature rises, and the back wear is large.
It has less impact on the tool than the cutting speed. Although the impact of the depth of cut on the tool is not as great as the cutting speed and feed, when cutting with a small depth of cut, the material being cut will produce a hardened layer, which will also affect the life of the tool.
The cutting speed to be used should be selected based on the material being processed, hardness, cutting status, material type, feed rate, depth of cut, etc.
The most suitable processing conditions are selected based on these factors.
Regular and stable wear to reach service life is the ideal condition. However, in actual operations, the choice of tool life is related to tool wear, changes in machined dimensions, surface quality, cutting noise, processing heat, etc. When determining the processing conditions
When necessary, research needs to be conducted based on the actual situation.”
Everyone is listening and memorizing carefully. Obviously, these knowledge are things they have not learned before. From now on, they have been exposed to a deeper level.
In nearly a year, Liu Lang gave them more than 20 lectures, and each time they were given "good stuff". It might take several years to understand it in the factory, otherwise the workers would not be able to improve.
So quickly, this knowledge and experience is enough for them to learn for a lifetime.
Privately, they were all talking about how much knowledge the chairman had learned abroad. If he could just teach him like this, one day he would lose all his knowledge. But then everyone discovered that what little the workers had learned was of no use to Liu Lang.
To be honest, it doesn't matter. Doctors from universities like Chen Wei are just like a bunch of ignorant people in front of Liu Lang, no different from workers.
There is an invisible gap between Chen Wei's group of doctors and Liu Lang, and there is also a huge gap between the workers and Chen Wei. After all, isn't there a huge gap between the workers and Liu Lang? It's almost infinite.
, so in the eyes of the workers, Liu Lang is like a Fucheng open-pit mine. After thirty years of digging, there are still so many reserves. The Fucheng open-pit mine is filled with coal, but Liu Lang’s brain is filled with gold, which is of immeasurable value!
In fact, Liu Lang taught the workers the knowledge that he himself had never learned. Will graduate students at Stanford University learn the skills of those workers? These things are originally learned by you. They learn the world's cutting-edge technology and study how to change
The machinery of the world.
The knowledge and experience learned by these workers of Norinco Group were all summarized by Liu Lang from top to bottom. He can have as much knowledge as he wants. Today we will talk about turning technology, and tomorrow we will talk about turning and grinding technology, and more.
There are grinding and milling, turning and milling, etc. It's like a master who is a "sweeper monk" who turns back to teach a group of martial arts beginners the basic skills of boxing and kicking. It's not an exaggeration to describe it as ever-changing.
It seems that Liu Lang taught them one move after another, but it contains logical thinking. As long as the workers have mastered it and strengthened it continuously, they can draw inferences from one example and teach them to others. This is also the level Liu Lang wants these workers to reach.
, otherwise he would have to teach each batch of workers personally, which would really exhaust him to death.
The workers of Norinco Group have basically met Liu Lang's requirements and are considered apprentices after nearly a year. Then the next step is for them to enter the formal industrial manufacturing stage and use the most advanced Andrews machine tools on the market as a template to manufacture the same products.
of machine tools.
Liu Lang estimated that the process would take nearly a year. Of course, Norinco could not 100% manufacture all the parts of the machine tool. There are more than 200 parts in a machine tool. If they were all manufactured, just manpower would not be enough.
There is no need. Norinco only manufactures the core parts. Just now Liu Lang drew on the blackboard
The crankshaft is just one, and there are also cutters. Don’t underestimate the cutter part. It’s like a person’s finger. What can you do if you don’t have fingers? There is a huge gap between the country and the country in the manufacturing of cutters.
It has something to do with the smelting technology, but also with the current processing technology and accuracy. Liu Lang has a way to make up for both aspects.
Another point is that in the first year, Norinco did not have any income. No, it cannot be said that there was no income at all. The welding project of the Jibei Power Plant was finally completed by Ma Ming and others. The reinforcement welding technology they applied also caused
Strong reactions from West Germany and island countries: How come China has also mastered reinforcement welding technology? This is unscientific!
Reinforcement welding technology was first invented by Fengtian Company in the island country two years ago. The door parts of several luxury cars are manufactured using this technology, which has high strength and good integrity.
This technological invention has been targeted by other countries and companies. The United States, West Germany, France and many manufacturing companies have begun research. However, more than two years have passed and no one has been able to imitate it. However, each has also made considerable achievements.
The progress of Stanford University, as a scientific research institution with a very strong faculty, their research is very close to the final result. Liu Lang only analyzed it some time in advance. It has been more than a year since he graduated from Stanford University. It is very likely that
The United States has already mastered this technology.
As for Siemens of West Germany and Mitsubishi Heavy Industries of the island country, they have also invested a lot of money in the research and development of this project and have achieved great results. It may take another year and a half to crack the mystery, but just now
At this time, a country whose industrial level is not first-class in their eyes suddenly comes up with this technology. Is this true?
This is of course true. Even if they don’t believe it, the welding joints and test results will not deceive their eyes. This technology has been used on more than one hundred joints, saving more than two million yuan in cost alone, and it has strong strength.
It's bigger, let alone Jibei City Power Plant, even Siemens' own company will not refuse it.
Well, the reinforced welding technology made Norinco Group earn hundreds of thousands of dollars, which is equivalent to more than 1.1 million RMB. This money is a net gain without much cost, which fully reflects the advantages brought by advanced technology.
A net profit of more than one million yuan is enough for a small factory to earn a year's income, but for Norinco, this amount of money is nothing.
Norinco pays workers more than one million yuan in wages a year, and nearly 10 million yuan is spent on purchasing equipment, raw materials, etc.
Therefore, if you earn hundreds of thousands of dollars from reinforcement welding technology, it will just be a waste of money.