"This involves the second reason." Lin Feng paused and then continued:

"The laser welding mainly uses two types of lasers, namely CO2 laser and Nd:YAG laser.

Among them, Nd:    The beam produced by YAG laser is mainly near-infrared light with a wavelength of 1.     06     Lm. The thermal conductor has a high light absorption rate of this wavelength. For most metals, its reflectivity is 20% to 30%. As long as a standard light mirror is used, the beam in the near-infrared band can be focused to a diameter of 0.    25    mm.

The CO2 laser beam is far-infrared light with a wavelength of 10.     6Lm, and the reflectivity of most metals to this light reaches 80% to 90%.

This HBC-115 handheld laser welding machine uses Nd:     YAG laser. Because the reflectivity for most metals is very low, the laser frequency has little impact on welding.

However, the material of the neuron transmission electronic board is titanium nickel alloy, and this alloy has a reflectivity of 75% under Nd:     YAG laser. During processing, severe astigmatism and backlight will occur. Due to the influence of laser frequency, the impact of this astigmatism and backlight on welding quality is infinitely expanded, so there is an extremely high waste rate."

"Oh!" After Lin Feng's explanation, the people present were enlightened and suddenly realized.

Even if you don’t have great enlightenment, you have to pretend to be great enlightenment. Such people...such as Zhao Yong next to you.

His expression was exaggerated, and he seemed to have an egg stuffed into his mouth. It seemed that he had a thorough understanding than others.

"Then Mr. Lin, how should we solve this problem? Should we install a special light mirror to focus the beam to a diameter of 0.    75    -   0.    1mm?"

Lin Feng nodded and shook his head again.

This statement made the technical supervisors confused.

What does Mr. Lin mean?

Some of them were about to ask a question, but Lin Feng walked to the HBC-115 handheld laser welding machine and gave the answer at the same time.

"Not only do you need to configure a special optical mirror, but you also need to adjust the rated voltage frequency of the machine."

Adjusting the rated voltage frequency of the machine? A group of technical supervisors do not agree with it.

How can the rated voltage of the machine be adjusted by means of adjustment?

If Lin Feng’s method is to add a current stabilizer and adjust the voltage frequency of the machine to 60HZ, it is more convincing.

However, before these technical experts could question it, Lin Feng directly entered a series of numbers on the CNC panel of the machine, then opened the repair port next to it, pushed the five empty wire heads apart, and connected them together.

Several technical supervisors surrounded him and saw that the appearance of the CNC panel had changed. It was in the English version before, but now it has completely turned into Donghan characters.

What is this situation? How did it change?

Moreover, what do the Donghan characters mean?

However, among the several supervisors, there are still capable people, and he came forward to explain:

“This is the machine backend repair panel.”

Repair panels, this term is familiar to several technical supervisors. Any foreign machine with some technology hides this panel.

First, for technical confidentiality, and second, for technical maintenance.

Simply put, the machine manufacturer deliberately left a hand in the machine operation background.

If the machine fails, those repair personnel sent by the manufacturer will use special means to call out the repair panel and enter the password to see where the machine is problematic.

Lin Feng Energy can re-install the repair panel, but these supervisors are not too curious. After all, the HBC-115 handheld laser welding machine is not a world-class equipment. You can find out how to re-install the repair panel through special channels.

But.....

"Mr. Lin, how do you know the repair password of this machine?"

"I don't know!" Lin Feng replied as if nothing had happened, and entered a number on the repair panel with his hands to adjust the rated voltage frequency of the machine to 50HZ.

"Don't know? How did you use the repair panel?"

This technical director asked questions that everyone was concerned about.

Lin Feng closed the repair panel and separated the five wire heads of the repair port again, and signaled to others: "These five wire heads are passwords. Once they are connected, an unstable weak current circuit will be formed on the main control panel, thereby unlocking the repair panel password."

"Of course, I specially added these five threads after the machine was installed, just for convenience of maintenance. But I was busy at that time and forgot to adjust the rated voltage frequency of the machine."

This statement is really eye-opening, but when everyone thinks about it carefully, it makes sense.

Just like a lock, you don’t have to hold the key to open it. As long as you find the trick, you can also pry it open with an instant noodles.

But Lin Feng said it easily, but the key question is how to find this trick.

There are at least hundreds of lines inside this machine. You need to find out the lines that can unlock the password among these hundreds, unless you spend a lot of time conducting rigorous arrangement and combination tests, and this kind of test has a high chance of accidents.

At the least, the machine circuit is short-circuited and the instrument is damaged. At the worst, the high voltage leakage will cause the experimenter to be electrocuted and die, or an optical explosion will occur, causing irreversible damage to the experimenter.

No one is so crazy to conduct such experiments because the difficulty and risk of the experiments are similar to the explosives tests that Nobel conducted.

But everyone glanced at Lin Feng and immediately changed their minds.

Well, there are still people who are so crazy.

But in fact, Lin Feng is not as crazy as everyone imagines, everything is for life.

In order to build the [Sword of the Sky], many precision parts had to be handed over to the processing factory to make. Among these mecha parts, there were also such electronic boards, which required HBC-115 handheld laser welding machine processing. However, few of these machines were purchased by medium-sized processing factories. Lin Feng ran to more than a dozen of them before finding one, but this HBC-115 handheld laser welding machine still failed and could not be used.

If you want to repair it, you have to ask a manufacturer of the production machine to send someone to repair it, and you have to spend money. At that time, it was in the cold winter of machinery production, and the factory manager was unwilling to spend money to ask someone to repair a machine that is not very useful unless Lin Feng can increase the price of parts processing by 50%.

But Lin Feng was even short of money at that time, but the parts could not be dragged all the time.

So he communicated with the factory manager, and then stayed alone in the processing factory building for a whole month.

During that month, Lin Feng only ate one meal a day, and often had instant noodles, and stayed in the factory for food and accommodation. He studied the HBC-115 handheld laser welding machine day and night.

The factory manager couldn't bear to see it anymore, so he asked the cafeteria to prepare meals for Lin Feng every day, one meat and one vegetable, and asked Lin Feng to replenish his body. He didn't want to see Lin Feng starving to death in his factory.

But Lin Feng directly expressed that he was not interested in the food and asked the canteen to change it to steamed buns.

The factory manager was puzzled. No one in the southerners liked to eat steamed buns. When he accidentally saw Lin Feng holding a pen in his left hand and a wrench in his right hand, and half of the steamed bun dyed with oil in his mouth. He focused on fiddling with the machine, and he immediately understood.

...........

Success has never happened.

It can be said that in that month, Lin Feng understood the size of each part, the use of each line, every diode and transistor of the HBC-115 handheld laser welding machine.

Nowadays, Lin Feng, let alone repairing the HBC-115 handheld laser welding machine, even if he builds one by himself, he will be able to do it easily.

But those present didn't know about Lin Feng's past. In the eyes of several technical supervisors, Lin Feng was simply a god.

Put it in the Three Kingdoms, it is a big bull who can be on par with Zhuge Liang.

Slap sex...

I don’t know who it was, so I started to applaud, and then the others also woke up, and suddenly, the entire factory was applause.

When I bought the medicine, Zhao Feifei, who was looking for the factory, happened to encounter this scene.
Chapter completed!