Chapter 91 ESR's Real First Step

The protagonist of the training, Gao Zhendong, had no idea that the founding of a new school was just around the corner.

What he is doing now is something else.

——Prototype joint debugging of ESR consumable electrode insertion control system.

The ESR power supply is not complicated, and the comrades have already made it. Although the sliding crystallizer has been made, it is not ready to slide for the time being, so now what is related to the control system is the insertion control of the ESR consumable electrode.

Gao Zhendong also prepared the electric slag. He did not choose the calcium fluoride-alumina binary high-fluorine slag system that has been put into use. The calcium fluoride content of this type of electric slag is as high as 70%. The advantage is the lowest hydrogen permeability, but it also has prominent problems such as serious fluorine pollution and high power consumption.

He chose the calcium fluoride-calcium oxide-aluminum oxide-magnesium oxide quaternary slag system that was used in the future, using calcium oxide and magnesium oxide to partially replace calcium fluoride. At the same time, when smelting alloys that do not contain titanium, aluminum, and boron, silicon dioxide can also be added to further improve the hydrogen permeability.

The advantage of this slag system is that it reduces power consumption while ensuring that there is basically no hydrogen added to the alloy, and at the same time fluorine emissions are significantly reduced.

In the ESR test workshop, as the personnel took their positions and completed the safety inspection, Gao Zhendong looked at his watch, noted the time, and gave the order: "Power on."

The switch is closed, the power supply emits a characteristic buzzing sound, a flash of light appears at the contact point between the consumable electrode and the electroslag, and the molten pool gradually builds up.

Gao Zhendong directed the experimenters to set the working voltage and current, and began to observe and record the changes in voltage and current.

Unlike what most people imagine, the working voltage used for electroslag remelting is not high, generally not exceeding 100 volts, but the working current is very large, up to several thousand amperes.

As the 200mm diameter consumable electrode slowly moves up and down in the electroslag, the working current gradually stabilizes at the set parameters. As it melts, the speed at which it continues to fall downward also becomes gradually regular.

Fang Yinghong, together with a group of test personnel, began to make some fine adjustments to the working voltage.

As the operating voltage changes, the falling speed of the consumable electrode also begins to change, and when necessary, the consumable electrode is even increased.

The operating current has been changing slightly around the set value, and the change range is completely within the expected range.

As time passed, the experiment gradually came to an end.

Gao Zhendong looked at his watch and saw that the time had reached the test plan requirement, so he issued an order: "Stop the test."

The test personnel were busy and orderly executing the test stop action.

As the last switch was turned off, every test record was handed to Gao Zhendong.

All the experimenters stopped and looked at Gao Zhendong who was looking through the test records.

Gao Zhendong carefully reviewed the test records, raised his head, looked at everyone, held up a stack of experimental records in his hand, and said loudly: "I declare that the joint debugging test of the ESR consumable electrode control system was a complete success!!"

Everyone applauded and cheered at once.

"Success!!"

"Success!!"

"Oooo!"

"Haha! Haha! Good! Good!"

If they weren't in the core of the test workshop, they would even run and dance here.

The success of the joint debugging test of the ESR consumable electrode control system not only means the establishment of electrode control and working current and voltage working conditions, but also means the successful trial production of the entire power supply system including power supply and short circuit network.

At the same time, the most basic working principle of electroslag remelting has also been verified. Next, it is the next stage of the experiment.

After everyone had vented their emotions for a while, Gao Zhendong pressed his hands together lightly, and everyone quieted down. Gao Zhendong spoke again.

"I know everyone is happy, and I am happy too, but let's not be happy yet. Next, there are a series of difficulties waiting for us, such as molten droplets, molten pools, metallography, electroslag optimization, selection of working electrical parameters, sliding crystallization, etc. Comrades, do you have confidence?"

The comrades present shouted in unison: "Yes!!"

The voice was firm and deafening.

Gao Zhendong laughed: "Okay, we must have this energy. I believe that in our hands, we can definitely come up with a better ESR process. Of course, work must be done and meals must be eaten. I asked the leader, and today the factory cafeteria prepared a decent 'overtime meal' for us. When it's time to eat, our entire ESR team will go and finish it."

When saying the words "not bad", Gao Zhendong emphasized his tone and made several eye contact to all the test personnel.

Everyone understood and laughed.

Seeing that it was almost done, Gao Zhendong asked Liang Faming to make preparations for the aftermath of the experiment and the next step, and then returned to the office.

Because someone came to inform him that there were two people waiting for him in the office.

The first one was a correspondent from the 17th Ministry of Machine Building, who came to inform Gao Zhendong about the training and preparation for the book "Project Management System".

After receiving the training preparation notice, Gao Zhendong estimated his own time, confirmed the training time with the communicator of the 17th Machine Department, and put the matter aside for the time being.

Preparation takes time, and the organization of the 17th Ministry of Machine Building also takes time. There is no rush for this matter.

Anyway, for him, the textbook is the book he wrote, and during the adaptation process, he has completely understood the contents of the book and can provide training with just a little preparation.

Moreover, Liang Faming, Fang Yinghong and Liu Rongguo, the three people in the laboratory who participated in the proofreading, can be brought in as teaching assistants when they are free. At least they can help in training and assessment.

In this way, they can show their face in front of the students and gain fame, while they can also reduce their work pressure, and the students can also get better training support. It is a win-win situation and everyone has a bright future.

After the department's communicator left, the second person was Lin Lianwei, whom I hadn't seen for a while.

He had been here for a while and heard that Gao Zhendong was doing experiments in the experimental workshop. He was an expert on the subject and knew that it was an important experimental area and he would not look at things he shouldn't see. He did not go to look for Gao Zhendong, but waited in Gao Zhendong's office.

Gao Zhendong poured him a glass of water and joked, "Lian Wei, you come here every now and then. Didn't your company deduct all your salary? Haha."

Lin Lianwei chuckled: "Thanks to you, I came to your place for official business, which is why you are close. If you were farther away, the company would have to give me a travel allowance."

Hearing that Lin Lianwei had something important to do, Gao Zhendong sat down and asked, "Any business? Do you want me to help you contact the factory?"

Lin Lianwei shook his head: "No, I'll find you."

He had no choice. Since he had to keep his visit to Gao Zhendong confidential, he couldn't call directly. And since he hadn't told anyone, he couldn't apply for a confidential channel, so he had to go there on his own.

Gao Zhendong took out a pen and paper and said without further ado: "Oh, well, tell me what's the matter."

(End of this chapter)