Rebirth 2008: I Can Make Money Reading

Chapter 45 Debugging Success (Seeking Investment)

January 15.

The first plasma surfacing equipment has been installed.

Mu Yang started debugging welding in the workshop.

The welding consumables and the workpiece ram to be welded are all ready.

The school was on holiday, and Song Xuelu followed Mu Yang to the company. She was just a curious cat, so she also came down from the workshop to watch.

Song Xuelu asked: "Yangyang, what is plasma?"

Mu Yang: "Xuelu, let me ask you a question first, if the temperature of the gas continues to rise, what will happen?"

Song Xuelu nodded: "Vaporize.

Molecules dissolve into atoms.

The formula from high school chemistry, 2H2O (water high temperature) = 2H2↑+O2↑”

Mu Yang nodded: "The meaning is almost the same. Gas is like water. It will be dissolved at high temperature. If the temperature is higher, it will be decomposed into hydrogen atoms and oxygen atoms."

"If the temperature is higher, the electrons in the atom will be stripped from the atom and become a positively charged nucleus and negatively charged electrons. This process is called ionization of the atom."

Song Xuelu suddenly realized: "It turns out that this is the case. Simply put, the gas is ionized into electrons and ions, so what ionization is used?"

Mu Yang smiled: "Good question, this is a tungsten needle, because tungsten is resistant to high temperatures, its melting point is around 3410 degrees Celsius, unlike steel, which is only melted at about 1500 degrees Celsius, and the tungsten needle will ionize the gas when it is electrified. "

One side points to the middle of the nozzle on the device, a tungsten needle with a diameter of 5.0mm and a tip ground to 30 degrees.

"Yangyang, you know a lot, but I still have a question that I don't quite understand. What kind of gas should I use?"

Mu Yang pointed to the light green gas tank a few meters away from the equipment, and patiently explained: "For gas ionization, argon gas is generally used.

This kind of gas is relatively cheap. A conventional 40L compressed tank costs only a few tens of dollars. If it is kept on, it can be used for seven or eight hours. For the shielding gas, argon must be used. "

Song Xuelu seemed to understand: "Use argon, because argon is an inert gas, and the newly melted metal is easily oxidized by the oxygen in the air, and there is oxygen in the air."

Mu Yang: "Well, smart!"

Song Xuelu scratched her head and smiled embarrassedly: "Yangyang, but there is a lot of knowledge that is difficult to understand, and it is a bit advanced." It is true that her grades are good, but some knowledge is rote, and it is hard to be sure without practice.

"You haven't touched it before. It's normal if you don't understand. I'll turn it on and debug it first. You should stay away from the machine. The welding arc is more dazzling, and there will be radiation." Mu Yang saw her running more than 20 meters away, and was also overwhelmed by laughter. Now, this is not throwing grenades.

"You don't need to run so far, just five or six meters away, just don't look with your eyes, otherwise it won't hurt your eyes."

Seeing Mu Yang waving, Song Xuelu ran back in embarrassment. After hearing his explanation, the workers around were also watching, and she felt a little embarrassed.

In the past few days, the workers also knew about this girl, knowing that she was the boss's girlfriend and that she was a student at the provincial university.

"Yangyang, you are so annoying, and you didn't make it clear. Look, your employees are laughing at me."

Mu Yang laughed, adjusted the height of the welding torch from the workpiece, turned on the argon gas switch, and checked the cobalt-based alloy powder in the powder feeder.

Then open the rotating platform first to ensure that the workpiece is in the center of the tungsten needle of the spray gun.

After the workpiece turns around and sees that the trajectory of the tungsten needle tip is centered on the welding position of the workpiece, start the machine welding with one button.

Suddenly, the tungsten needle of the welding torch released a dazzling beam of light. The radiated light ball was the size of a basketball, and the eyes could not look directly at it.

Through the black glass protective cover, one can see a beam of light hitting the welding bead of the workpiece. As the workpiece rotates, the cobalt-based alloy powder melts into a molten metal pool, and the welds are gradually formed.

When Song Xuelu saw Mu Yang observing, she realized that plasma welding was like this. When she walked over, she also watched through the black glass protective cover. After finally seeing the plasma beam clearly, she suddenly understood: "This is similar to gas shielded welding. It’s molten metal that piles up on the surface of the workpiece.”

Mu Yang nodded: "Well, almost, they are all arc welding, but there is a big difference."

After about three minutes, a circle of welding is completed. The workpiece turns red at high temperature, and the temperature is extremely high. Wait for the workpiece to cool slightly to one or two hundred degrees before surfacing the second layer.

After welding the second layer, after cooling down to one or two hundred degrees Celsius, Mu Yang used clamps to clamp the workpiece off the workbench and let it cool down.

The size of the gate sample is 3 inches, the amount of surfacing welding on one side is about 210 grams, and the welding time is 252 seconds.

The welding efficiency per hour is 3 kg, if it is artificial traditional argon arc welding, it is only about 0.8 kg.

Mu Yang brought a portable spectrometer, pointed the detection port at the surface of the weld, and pressed the switch of the instrument, and the display screen showed the composition of the main alloying elements.

Song Xuelu stood aside and watched: "Yangyang, this spectrometer is quite powerful, it can detect any element."

"That's right, even though this instrument is only two or three kilograms, it costs two hundred and thirty thousand yuan, a car."

Song Xuelu was shocked: "Ah, so expensive!"

"Imported ones are of course expensive." Mu Yang was also very helpless. In a few years, the market price of this instrument will drop to more than 100,000 yuan, which is still very expensive.

"Actually, this instrument can't detect any elements. For example, gases and carbon elements can't be detected, but metal elements can."

"Oh, did you pass?" Song Xuelu looked at Mu Yang's serious face, and was really afraid that she would fail.

Mu Yang stood up and breathed a sigh of relief. Seeing her nervousness, he smiled: "Chromium, molybdenum and tungsten are all within the standard range, and the most difficult iron element is 3.38%, no more than 5%, qualified."

Mu Yang asked her to try the test. At the beginning, she was afraid of using the equipment, which cost more than 200,000 yuan.

But curious, he carefully followed Mu Yangjiao's operation.

Song Xuelu was a little strange: "The element composition of each measurement point is different. The iron element in this measurement point reaches 4.5%."

"Well, it's normal to have differences. As long as the beneficial elements are within the standard range and the harmful elements do not exceed the standard, it is qualified."

"Then we succeeded?"

"The most difficult problem to solve at present has been solved, but other projects have to be tested."

Next, Muyang tested the surface hardness of the surfacing layer, which was about 400HV, and the standard requirement was 330-450HV, which was qualified.

Then wire-cut the surfacing layer and the sample, observe the fusion line, the fusion is good, no defect, and three samples are bent sideways, and there is no tear or fracture at the bend, indicating that the toughness is good and qualified.

With my own experimental equipment, it took nearly two hours, mainly because the wire cutting and grinding were too slow.

"Yangyang, are we successful?"

Song Xuelu is helping to register the experimental data. She has completed all the items required on the form, but she will not judge the results.

"Well, it's very smooth!" Mu Yang debugged it for several years in his previous life and groped countless times.

I am not afraid of difficulties, but I am most afraid of not being able to find the cause of the problem and the general direction, or even researching in the wrong direction, which is why I am annoyed.

"That's great!"

Song Xuelu saw Mu Yang nodding, and he was frowning these days.

These days, he has gone to the point of forgetting to sleep and eat. He works overtime at night until ten o'clock to assemble equipment, and stays with him until very late before leaving the company.

When he returned home to sleep, he would wake up in the middle of the night to think about problems, and even opened his notebook to look at the drawings, and then continued to sleep after he figured it out.

Song Xuelu didn't know until now that she usually saw him laughing and joking, but he was actually under a lot of pressure during this time.

If the experiment fails, the multi-million dollar investment will go down the drain.

And she, who feels like a useless little girl, can only help him with some trivial matters so that he can concentrate on his career.

Fortunately, all went well.

Although I have never done an experiment, I know that it is not easy to conduct research.

Mu Yang stretched his sore hands, took Song Xuelu's water glass, and drank a few mouthfuls of plain water.

Then he said happily: "Yes, I am the first in China, the first person to tackle the problem of surfacing cobalt-based alloy automation equipment, and I can make a lot of money by relying on this."

"Wow, the first in China, so powerful!"

"There is also plasma surfacing in China, but it is rarely applied to the surfacing of valve sealing surfaces. There are many problems, such as the iron element just now, and the control of surfacing thickness. I guess those manufacturers with plasma surfacing equipment have not yet solved it. .”

Hearing what Mu Yang said, Song Xuelu knew how precious this equipment was, but she never thought that Mu Yang would actually make this equipment, it's really amazing.

She often studies with Mu Yang, knowing that Mu Yang reads some complex knowledge materials, and occasionally draws parts on white paper. Unexpectedly, he really succeeded.

This must be kept secret.

"Yangyang, this achievement is so important, why should we apply for a patent or invention?"