Eight hundred and seventieth chapters magical welding process
"Teacher Du, how much does this instrument cost?"
A young worker couldn't help but ask.
"Is this the price Mr. Liu paid for it when he bought it from the United States? It's about 300,000 U.S. dollars, so it's more than 2 million yuan!"
"What? More than two million! Oh my god!"
Everyone shrank in fear. One machine cost more than two million yuan. It was too scary.
They don't know that this is the price in the U.S. market. If it is imported into the country, the price will at least double or triple. It cannot be lowered without tens of millions.
"Don't you pay attention to the price? I want you to see what this iron pipe looks like. Xiao Sun, take out the pipe!"
Soon this iron pipe was placed in front of everyone. Yes, a 20-centimeter-long hole was torn cleanly in one position of the iron pipe. Under the pressure of nearly 100 atmospheres, the iron pipe became extremely fragile.
But no one present said a word, and everyone's eyes widened. They saw an incredible scene.
It is normal to tear apart, but the tearing position is wrong! Isn't it the right position where welding should be done? Why is it at a position 20 centimeters away from the welding seam? This is contrary to common sense!
What does this mean? It means that the strength of the welding location is greater than the strength of the overall material. How is this possible? Even the best welders can only increase the strength of the welding location to 90% of the overall strength through superb craftsmanship. This is the welding process
A generally accepted rule, but now, this rule has been broken!
"Everyone, you see, this is the craftsmanship. What did I just say? Welding technology is not just splicing. As technology becomes more and more developed, the improvement of technology also develops. Many technologies are beyond our imagination.
Who could have imagined that welding technology has developed so far that it can make people feel like they have the Midas touch of gold?"
Du Xin said with a smile.
"Teacher Du, is this technology the best in our country?"
"Well, I guess so. In fact, this technology has not been popularized in China yet. It has just entered our country a few months ago and was brought in from the United States by Mr. Liu!"
"Mr. Liu!"
Everyone heard this legendary name again.
"This welding technology comes from the island country. It was created by a welding factory five years ago. Later, Americans also learned it. It happened that Mr. Liu learned this technology in college.
However, even in the United States, this technology is still in the experimental stage and has not been fully understood. However, Liu Lang is not an ordinary person. After learning it, he improved it, completely understood this technology, and understood all the steps.
They are all recorded in detail, and I have only scratched the surface.
That’s all, we can only weld ordinary cast iron parts. As for more advanced parts, such as high-pressure pipe fittings, stainless steel materials can’t be completed yet. Of course, this is only a matter of time. As long as you give me enough time, these materials can be used.
Do you want to learn how to perform strengthened welding?"
"Of course I want to learn. Anyone who doesn't want to learn is a fool!"
everyone shouted.
"Okay, then let's learn from the most basic...!"
Du Xin is right. This enhanced welding process is a craft technique Liu Lang learned at Stanford University, and it is also considered "high-tech" in the United States.
This technology was created by the islanders in the early 1980s. It was first used in the welding of car doors. In the past, car doors were all made of a single piece of material and were pressed and molded in one go.
Limitation, relatively speaking, the strength of the material is not high, which poses safety risks.
Later, after countless experiments, the workers of Fengtian Company finally created a process that can enhance the strength of the welding joint. With this process, two relatively small pieces of high-strength materials can be welded together.
The strength of the seams is actually higher.
In this way, the door of the Fengtian is made of two or even three pieces of stronger materials, making it stronger. This technology shocked Americans.
The American Automobile Industry Association wanted to learn this technology, so it cooperated with Stanford University. The person in charge of the university happened to be Professor Hans of Materials Engineering. Although Liu Lang was not his student, he often attended his classes and he was very fond of him.
I like Liu Lang and sometimes take him to my laboratory. This project is not very important, and the other party is not taboo about it, and tells Liu Lang a lot of test data.
Well, when it comes to data analysis, especially data analysis in mechanical engineering, there is no one better than Liu Lang in the world. Even ordinary computers cannot do it, because computers also need to use algorithms to perform analysis. Liu Lang
Lang is an expert in his own right, and his brain comes with various parameters.
After nearly half a month of calculation and analysis, Liu Lang restored this craft technique.
It was just that he had no way to conduct the test in the United States. After returning to China, engineers from Huaxia Industrial Technology who were proficient in welding technology were able to restore it. Du Xin was the leader among them.
Of course, although Liu Lang found out this process, it cannot be operated by just any welder. There are nearly ten methods alone, and three of the welding techniques can only be mastered by at least a sixth-level welder.
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If you want to learn this process, you must first have superb welding skills, and secondly, you must know many welding mechanisms. This process is no longer a simple craft, there is a deep theory behind it.
Of course, welding technology alone cannot achieve enhanced welding. Welding materials, steel heat treatment, and annealing all have precise calculations. If there is a mistake in any link, it will not succeed. Du Xin was able to succeed just now because the material was only the most common.
It would take a lot of time to replace cast iron with stainless steel.
This technology has not yet appeared in China, and no one has even heard of it. However, there is no doubt that this technology is of great significance to the country, because in many projects, especially the construction of thermal power stations, the production of large turbines
The fan blades are all molded in one go. The largest blades can exceed one meter. They also encounter the same problems as Fengtian Company. The strength cannot reach the highest level, so the service life will be very short.
If this welding technology is used, this problem will be solved and even larger fan blades can be welded.
Of course, as Du Xin said, this process becomes more and more difficult depending on the material. Cast iron is the easiest. It took Du Xin more than two months to learn it. Now the most difficult thing in China is high-pressure pipes.
and turbine fan blades of large thermal power plant units. Du Xin also spent the first half of the year learning to weld these materials.
The better the material, the higher the welding material. You can't use ordinary welding rods when welding high-voltage pipe fittings. Without materials, no matter how good the technology is, it is useless.
In addition, the welding of high-strength materials also involves argon arc welding. This argon arc welding is much more difficult than electrode arc welding, and few people in Fucheng can operate it.