"This is the main control panel, these boxes are used to select the detection object. As you can see from the name, it includes several modules before activation, self-test, charging, power-on refining, and thermal shutdown.

Before the vacuum electric slag remelting furnace was activated, we selected the self-test module to enter the self-test monitoring screen. Through the precision detection instrument installed in the furnace, we observed the extraction vacuum state, whether each stroke switch is normal, the offset angle, and the reciprocating movement of each moving component, and other key data to assist the operator in checking the status of the vacuum electric slag remelting furnace.

This process is fully automated. The relevant data is solidified in the control chip, and each detection item will be transmitted back to the corresponding data, and compared with the data in the chip. If it is confirmed that within the allowable error, the word "detection passed" will be displayed.

All data is detected and can be enabled by the device, otherwise it will be locked automatically to avoid damage to the device..."

The vacuum electric slag refining workshop has a large space, and the automation main control room is set in the left corner of the factory, with a size of more than 20 square meters.

At this time, the main control room was filled with people wearing white coats, and they were basically experts from China. As the masters, teachers from military sub-district universities had enough time to visit and study in the future, so they did not enter the main control room and seized the already crowded space.

In order to accommodate as many people as possible, the experts offered to stand except for the operators, without having to put chairs for them. Most of these experts were wearing thick myopia glasses and white coats, and each of them was holding a small notebook. Even old experts with white hair were like primary school students listening to the teacher's lectures, listening to Guan Fei's detailed explanation while taking notes with serious expressions.

Many people also drew down all the content displayed on the main control screen as a reference.

Although there are many people, the room is in order. Everyone is silent, and even coughing is suppressed, for fear of affecting others. People who have questions about a certain place will raise their hands first and then ask their own questions after they are allowed.

After the entire installation project was completed the day before yesterday, a pre-heat test was carried out. A comprehensive inspection was conducted for precision components such as beams, columns, rollers, guides, etc.; stroke limit switches; x-axis y-axis control mechanism; crystallizer linkage components, gearboxes, reducers, brakes; equipment weight sensors, temperature sensors, potential sensors, etc.

Today will be the day when the vacuum electric slag remelting furnace is officially heated and tested. Not only the earlier expert group, but also the inspection team led by the Chinese Academy of Sciences has also been dispatched collectively. Because there are too many people, even the spacious workshop cannot accommodate them, and most people can only wait outside the factory.

Guan Fei attached great importance to the first test of the plane.

No one in China has actually operated the vacuum electroslag remelting furnace, so no one knows what will happen, and he doesn't know how to deal with it. Therefore, today, in addition to several operators from the special alloy factory, he himself took the initiative.

Under his clear and concise command, several operators faced their respective control screens and calmly controlled them, successfully completing all the work of self-inspection, electrode installation inspection, and loading before activation. At this time, we can see how automation is at the vacuum electric slag remelting furnace transformed by Guan Fei.

With the assistance of a large number of sensors, various data are summarized and transmitted to the main console and displayed in front of everyone at a glance. There is no need for a large number of technicians to perform various inspections before activation in a hurry. The operator only needs to select the corresponding cursor on the keyboard and press the keys. All the work is handed over to the main control chip, and then just wait for the data quietly.

Although the operators were also afraid of making mistakes, they had clearly passed the equipment self-test, but they had to compare the operating manual and repeatedly, which wasted a lot of time.

But even so, the whole time was not more than ten minutes!

“Too fast!”

"Yes, in the past, we used to take dozens of people just to enable the self-test, which took half a day. But now, only these two or three people pressed a few buttons on the main console and everything was completed. It was so convenient!"

"It's just a little more investment. Their remelting furnace has a lot of sensors installed. The advantage of the electric slag remelting furnace is that it has simple equipment, low requirements for the site, and low cost investment. But they first added a vacuum sealed shell and installed so many sensors, and the cost was turned two or three times at once. This is too uneconomical!"

"You can't say that. Although the one-time investment is a little bit large, you can see that after the degree of automation is improved, the labor intensity of technicians has also been reduced, and the preparation time before activation is shortened. In terms of cost-effectiveness, it is hard to say it is a waste..."

Seeing the modified vacuum electric slag remelting furnace with such high operating efficiency, the experts watching finally couldn't help but buzzed and started to whisper.

"All parameters are correct, and you can turn on the power!" On the right console, a technician's forehead was oozing with slight sweat beads, and there were water stains on the place where his palms touched. He was obviously so nervous that his palms were sweaty. He looked up and looked down, and read the operating manual countless times, checked all parameters, and finally opened his mouth in a half-inquiry and half-confirmed tone. He raised his head to look at Guan Fei.

"Don't be nervous, are you sure the parameters are all correct?" Guan Fei stood beside him and said calmly.

The technician became even more nervous when he asked this. He thought he had read it wrong, so he hurriedly compared the numbers one by one: "It's true there is no problem."

"So what is the process said?" Guan Fei still didn't give the exact answer and asked back.

"In the process, you can turn on the power and start refining..." the technician stuttered, his voice a little weak, showing that he was still not very confident.

The experts onlookers let out a kind chuckling.

They all saw the nervousness of this young man, and it was no wonder that when faced with a device worth millions, who could be calm before the first operation.

Besides, in the eyes of old experts, he is still a child!

Guan Fei did not laugh, but bent slightly, supported the console with his left hand and his right hand on his shoulder, and encouraged softly: "Since all processes and parameters meet the manual, then just do it as you want. You are an operator, and the operation of the entire equipment is controlled by you, so when it is time to be decisive, be decisive. The manual was not written by you. Even if there is a mistake, as long as your operating process is fine, it has nothing to do with you. Do you understand?"

"Yes!" The technician was still thumping, but he was no longer so scared and replied loudly.

"So what should I do next according to the process?" Guan Fei repeated the question again.

"Power on!" said the technician gritted his teeth and bravely pressed the power on button under the eyes of the experts who held their breath behind him.

Swish!

As he pressed the button, everyone's eyes quickly turned, looking up at a large twenty-nine-inch screen above the console.

The screen was originally pitch black and nothing could be seen. As the current turned on, it suddenly showed a dark red light. After a second or two, the red light became stronger and more dazzling, and finally turned into a bright white area, and the picture above was completely unaware.

Wow!

In the quiet main control room, a burst of warm applause suddenly rang out.

Powered on and heated successfully!

This is how science is, it is to solve one problem after another and ultimately ensure the normal operation of the equipment. Even though today's test machine failed, the results have been achieved in the project of power-on heating, which proves the reliability of this component.

It doesn’t matter if you fail. Just find the cause of failure and gradually solve it.

At least, at present, the first level has been passed and phased results have been achieved. All the experts can't help but applaud, and the main control room is filled with joy.

The vacuum electric slag remelting furnace has been successfully completed several times in China. This is the first time that it has been successful - even if it is a local success, everyone can't help but be excited.

This at least proves that it is not that the vacuum electric slag remelting furnace cannot be created in China, but that the previous direction is wrong.

There are two concepts: being unable to do or being unable to do.

If you can't do it, it means you really can't do it. No matter what you think of, it will take a lot of effort and effort. But if you do it wrong, it just means that you have not found a solution. After improving your ideas and research directions, you may succeed.

Seeing that the first vacuum electric slag remelting furnace designed by the Military Sub-district and manufactured in China was successfully energized and molten steel. Although it was still far from the final success, everyone was so excited that they laughed to the sky and couldn't help themselves.

If there is the first one, there is the second one and the third one...

This is a key step from scratch!

From now on, the country finally saw the dawn of breaking through the blockade of Western forces and having our own vacuum electroslag remelting furnace, and many people couldn't help but burst into tears.

"It's dripping! It's dripping!" An old expert with sharp eyes suddenly pointed to another surveillance screen next to him, shouting and jumping like a child.

boom!

The main control room suddenly became messy, and everyone wanted to squeeze in front to watch.

"It's really a drop!"

I don't know who it was, but screamed in a crying tone.

"It's been dropping!"

"Yes, it's dripping!"

...

"It's been dropping!"

The sound was heard one by one, from the front to the back, from the main control room to the workshop, and from the workshop to the outside of the factory. Everyone was repeating the word "dripping liquid"!

Although only a very small number of people who see the surveillance screen, most of them only get the news from others, this does not prevent them from laughing like a flower and conveying the good news to others. Hundreds of people are constantly repeating in the same voice:

"It's been dropping!"

Many people were talking and laughing, and a line of tears flowed down their cheeks.

They finally looked forward to the day when the hardships and sweetness came.

Because, it's dripping!

The vacuum electroslag remelting furnace is an upgraded version of the electroslag remelting furnace. It is a refinement technology outside the furnace that started in the 1960s, developed in the 1980s, matured in the late 1980s and early 1990s.

The so-called electroslag remelting furnace, simply put, contacts the self-consuming electrodes with the slag, and generates high heat after being turned on, melts the steel material. When the melted molten steel penetrates through the slag layer, it is in close contact with the slag material, thereby removing non-metallic debris in the molten steel. At the same time, during the steel-slag reaction, it removes harmful impurities such as sulfur, lead, and tin that are difficult to deal with.

Steel ingots remelted through electroslag have very high purity.

In addition, the steel seeps out of the slag material, drips into the water-cooled casting mold, gradually solidifies at the bottom, and expands evenly to the surroundings, avoiding the disadvantage of poor center growth that must occur in traditional melting forging, and the metallographic structure is uniform and dense. When the steel ingot gradually grows, a very thin layer of slag will be produced between the steel ingot and the mold wall, making the surface of the ingot very smooth.

These characteristics make the special alloy refined by electroslag remelting technology excellent quality, and are very suitable for refined alloy structural steel, bearing steel, tool steel, ultra-high strength steel, precision alloy, corrosion-resistant alloy and other special alloy materials. Their plasticity and impact-resistant properties are exponentially improved, and have an immeasurable value for improving national defense, aerospace, and precision manufacturing technologies.

The vacuum electric slag remelting furnace of the Military Sub-district is a major improvement made on the basis of ordinary electric slag remelting furnaces.

Although only a double shell is added, it is by no means an optional accessory!

According to relevant domestic research, it has long been found that since the electroslag remelting furnace is in an outdoor atmospheric environment, it cannot be used to refine metals such as aluminum and easily oxidized. Moreover, the electroslag remelting furnace has a large amount of dust in the production environment, and produces fluorine gas in large quantities. The environmental pollution is serious, which will also pose a great harm to the health of the operators.

After the military sub-district vacuum reform, various dust and fluorine gas will be isolated and removed, which will have a great effect on the health and environmental protection of technicians.

Of course, considering the increased costs, it still needs to be discussed whether it is worth it for a country that does not pay much attention to the environment.

Another advantage of vacuum protection cover is that it removes gases such as oxygen in the furnace, making the texture of the steel ingot more pure. Metals such as aluminum that could not be refined before can also be refined in this way. Although there is no accurate data for the refined special aluminum alloy, according to laboratory research, its physical characteristics will be greatly improved, which can enable domestic production of better quality aviation aluminum alloys.
Chapter completed!