Rebirth 2008: I Can Make Money Reading

January 15.

The first plasma surfacing equipment has been installed.

Muyang started debugging and welding in the workshop.

Welding consumables and workpiece gates 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 came to watch it from the workshop.

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

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

Song Xuelu was puzzled: "Gasification?

Molecules dissolve into atoms?

Following the formula in high school chemistry, 2H2O (high temperature of water) = 2H2↑+O2↑”

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

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

Song Xuelu suddenly realized: "So it looks like this, in simple terms, the gas is ionized into electrons and ions, so what kind of ionization is used?"

Mu Yang smiled: "Good question, this is a tungsten needle, because tungsten is resistant to high temperature, its melting point is around 3410 degrees Celsius, unlike steel, which is melted at only about 1,500 degrees Celsius, and the tungsten needle will ionize the gas when it is electrified. "

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

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

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

This kind of gas is relatively cheap. Like this conventional 40L compression tank, it costs only tens of dollars. If it is kept on, it can be used for seven or eight hours. For the protective gas, argon must be used. "

Song Xuelu: "Why use argon gas instead of air?"

Mu Yang shook his head: "You know argon arc welding, argon is used to protect the molten metal, this is because argon is an inert gas, and the newly melted metal is easily oxidized by the oxygen in the air. no."

Song Xuelu finally understood this time, scratching her head and smiling embarrassedly: "Yangyang, I'm so stupid, I don't understand anything."

"You haven't touched it before, so it's normal that you don't understand. I'll start debugging first. You are farther away from the machine. The welding arc is more dazzling and there will be radiation." Mu Yang was laughed when she saw her running away more than 20 meters away. Well, this isn't a grenade throw.

"You don't have to run that far, just five or six meters away, just don't look with your eyes, or it's easy to hurt your eyes."

Song Xuelu was embarrassed to run back when she saw Mu Yang beckoning. After listening to his explanation, the surrounding workers were also watching, and she was a little embarrassed.

In the past few days, the workers have also known about this girl, that she is the boss's girlfriend, and she is also a student of the provincial capital university.

"Yangyang, you really hate it, and you don'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 of the powder feeder.

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

After the workpiece has rotated a circle and you can see the tungsten needle tip track is aligned with the welding position of the workpiece, start the machine welding with one key.

Suddenly, the tungsten needle of the welding gun released a dazzling beam of light, and the radiated ball of light was the size of a basketball, making it impossible for the eyes to look directly.

Through the black glass protective cover, a beam of light can be seen hitting the weld bead of the workpiece. As the workpiece rotates, the cobalt-based alloy powder is melted into a molten metal pool, and a series of welds are gradually formed.

Song Xuelu saw that Mu Yang was observing and realized that plasma welding was like this. She came over and watched through the black glass shield, and after finally seeing the plasma beam, she suddenly understood: "This is similar to gas shielded welding. It's molten metal piled up on the surface of the workpiece."

Mu Yang nodded: "Well, it's almost the same. They're all arc welding, but there's a big difference."

After about three minutes, after welding a circle, the workpiece turns red under high temperature, and the temperature is extremely high. When the workpiece is slightly cooled to one or two hundred degrees, the second layer is surfacing.

After the second layer after welding, after cooling to one or two hundred degrees Celsius, Muyang clamps the workpiece from the worktable with clamps and cools it.

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

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

Muyang brought a portable spectrometer, the detection port was aligned with the surface of the weld, and the display screen showed the composition of the main alloying elements by pressing the switch of the instrument.

Song Xuelu watched from the sidelines: "Yangyang, this spectrometer is very powerful, it can detect any element."

"That's right, don't look at this instrument, it's only two or three kilograms, but it cost 230,000 yuan for a car."

Song Xuelu was shocked: "Yeah, it's so expensive!"

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

"Actually, this instrument can't detect any elements. For example, gas and carbon elements cannot be detected, only metal elements can be detected."

"Oh, is that qualified?" Song Xuelu looked at Mu Yang with a solemn expression, and was really afraid of failing.

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

Mu Yang asked her to try the test. At the beginning, she was afraid that the equipment would be damaged. It was more than 200,000 yuan.

But he was also curious and carefully followed the operation of Muyang Sect.

Song Xuelu was a little strange: "The elemental composition of each measurement point is different. The iron element at 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 cut the surfacing layer and the sample, observe the fusion line, the fusion is good, there is 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 its own experimental equipment, it also took nearly two hours, mainly because the wire cutting and grinding were too slow.

"Yangyang, are we successful?"

Song Xuelu was helping to register the experimental data, and all the items required on the form had been completed, but she would not judge the results.

"Well, it's very smooth!" Mu Yang spent several years debugging in his previous life, groping for countless times, otherwise, where would it be so smooth, and it would be tossing people to death.

Don't be afraid of difficulties, most afraid that you can't even find the cause of the problem and the general direction, and even the research direction is wrong ~www.novelmt.com~ It will be annoying.

"That's great!"

Song Xuelu saw Mu Yang nodded, and he frowned these days.

These days, he has reached the point of forgetting to sleep and eat. He works overtime until ten o'clock in the evening to assemble the equipment, and accompanies him to leave the company very late.

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

Only then did Song Xuelu know that he usually saw him laughing and joking, but he was actually under a lot of pressure during this time.

If the experiment fails, the millions of dollars in investment will go to the water.

And she, feeling like a useless little girl, can only help him solve some lock-ups and let him concentrate on his career.

Fortunately, everything went well.

Although I haven't done experiments, I know it's not easy to do research.

Mu Yang stretched out his aching hands, took Song Xuelu's water cup, and took a few sips of plain water.

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

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

"There is also plasma surfacing in China, but it is rarely applied to valve sealing surface surfacing, and there are many problems, just like the iron element just now, and the thickness control of surfacing. I guess those manufacturers who have plasma surfacing equipment have not been able to solve it. ."

Hearing what Mu Yang said, Song Xuelu knew the value of this equipment, but she never thought that Mu Yang would actually come up with this equipment, it was really amazing.

She often studied with Mu Yang on self-study. She knew that Mu Yang read some complicated knowledge materials, and occasionally drew parts on white paper. Unexpectedly, he really succeeded in doing it.

This must be kept secret.

"Yangyang, then this achievement is so important, do you need to apply for a patent or invention?"