The door of the courtyard house has been welded dead

As for the tactical vest, Li Feng didn't push too hard.

Mainly Chief Jin, he wants to get this matter done as soon as possible.

In the factory, people are not afraid of Secretary Li assigning tasks, but they are afraid that Li Feng will not assign tasks.

As long as a task is given, it represents an opportunity, a chance for the young to rise to the top.

"What the hell is this~!"

The thick iron barrel is being rotated by a motor at the bottom. You can hear the "bang bang bang" sound of heavy objects hitting each other inside, accompanied by the "crash" sound of sand and gravel flowing.

Li Feng, wearing a white coat, stopped in front of a machine at the door of the workshop. Looking at several workers in white coats operating the machine nearby, he asked curiously.

"Ball mill, Secretary Li~!"

After taking off the mask, one of the technicians hesitated for a moment, and then stood up to explain after being encouraged by the workers.

If he knew, Li Feng would not even ask. The production line from Shanghai seemed to have never seen this thing during the last trial run.

"Ball mill, what is that?"

"Officer Bai applied to the deputy factory director, who asked the workshop to make it. It was delivered to us the day before yesterday, in fine powder form~!"

Wow, Li Feng didn’t even know this thing was made temporarily in his own factory.

Li Feng originally intended to just ask a simple question, but he actually stopped. This piece of jumbled stuff really looked a bit like what Mr. Shen did. It didn't matter whether it looked good or not, as long as it worked.

The appearance is very simple, it is an iron barrel that is more than one meter long and half a meter wide. It looks like it was modified from a high-pressure furnace used somewhere in the past. There is a motor connected to the bottom, which drives the belt to make this round iron barrel rotate on the shelf.

After turning off the motor and opening the side cover, Li Feng realized why it was called a ball mill. It was filled with iron balls of various sizes.

"The principle is very simple. The cylinder rolls and brings the iron balls inside to a high place inside the barrel and drops them down. When they fall, the friction between the iron balls and between the iron balls and the cylinder wall can grind the aluminum oxide powder into a finer level~!"

The technician gave a brief introduction on the side, cleaning the powder inside while explaining to Li Feng the principle of the machine's operation.

Not to mention, Li Feng reached into the machine and grabbed a handful. The aluminum oxide powder in the machine was still a little hot. He rubbed it with his thumb and felt that it was indeed finer than the powder provided by the manufacturer.

The fineness of the alumina particles determines the strength of the ceramic plate. Li Feng never thought that there were really capable people in the research institute who could make something out of it using the existing conditions of the steel rolling mill.

Li Feng patted the powder off his hands and smiled. He didn't expect that the obstacle in the ceramic workshop would be solved so quickly.

"Come on, Director Bai, is this what you thought?"

Director Bai, who was waved over by Li Feng, looked at Li Feng next to the ball mill. He probably guessed what Li Feng wanted to ask, and pulled another young man in a white coat over.

"It wasn't me, it was a new college student named Liang Qiu, he designed it~!"

The young man was wearing a white coat, a mask and a white hat like everyone else. For a moment, Li Feng couldn't see what he looked like.

However, it doesn’t matter if you can’t remember his appearance. As the factory director, Li Feng only needs to remember his name. He patted the young man on the shoulder and encouraged him.

"That's right. I said that hiring more college students is not a disadvantage. It can combine the conditions of the factory and produce something. It's great~!"

"I'll remember you, Liang Qiu, right? Work hard and strive to see your name on the list of merit and awards at the end of the year~!"

"Yes~!" The young man's voice sounded a little muffled through the mask, but the gleam in his eyes would not lie.

Gesturing for them to continue with their work, Li Feng continued to observe along the production line. The crushed powder had to be stirred by a machine to make the powder particles more uniform.

After coming out of the mixer, the powder will be sent to the next processing location, and after layers of screening, it will reach the hydraulic press.

Here we are inside the ceramic workshop, where even more people are busy. Because of the splashing of powder, every employee wears a mask, including Li Feng.

After pressing and molding, a small piece of alumina ceramic plate the size of a palm and the thickness of a finger is formed.

The shelves are piled high with products that have been produced in the past few days. It’s just that the electric temperature furnace takes time to bake them. So here, the four-lane road becomes a single lane and we need to queue up and wait.

Li Feng took down two pieces of pressed alumina from the shelf and took a look at the powder after more fine grinding.

The surface also feels much smoother and looks grayish white, but after firing, the color turns into milky white.

When you knock it, it makes a "ding-ling-ding-ling" sound, which is extremely crisp. At this point, it can be said that it has taken shape.

The entire assembly line is indeed very simple, so simple that it looks like a small workshop.

"It would be better if the pressure of the press was a little higher~!"

Also observing the ceramic pieces coming out of the electric temperature furnace, Ran Qilin was able to give a better solution, while Li Feng knew nothing and could only listen to the discussions of these technicians.

"The temperature needs to be further increased. This fuse is always blowing. We only have one furnace. I'll make a note of this and ask the deputy factory manager to see if we can apply to the higher authorities to add an electric temperature furnace. It would be best if the manufacturer can increase the power a bit~!"

"Okay, I'll take note~!"

Ran Qilin nodded, put the freshly-baked ceramic piece back to its original place, and when he turned around to leave, he discovered that Li Feng was sneaking around and eavesdropping on their conversation.

"How's it going? Have you come up with any results on the back panel?"

Seeing that Ran Qilin recognized him, Li Feng stopped trying and looked at the baskets of already formed ceramic pieces. No matter what the results of the live-fire shooting were, it was time for him to give an answer.

After all, the combination of the two forms a complete bulletproof plate. Otherwise, the shattered ceramic fragments, accompanied by the kinetic energy of the warhead, will hit a person, which is more terrifying than a single bullet.

"The hot rolling workshop is in production, and the samples haven't been brought in yet. But how are you going to combine the two~!"

Ran Qilin knew that Li Feng was studying these ceramics for some purpose, but one was steel and the other was ceramic, they were different types.

"Once you're ready, just glue it. Hmm, I sent some glue specially for you. It's right at the door. Come in and take a look~!"

"Use glue?"

Science students tend to complicate simple things, and he didn't expect this would be the answer.

"Yes, otherwise, after gluing it, just wrap it with a layer of cloth~!"

Following Ran Qilin to the door of the workshop, Li Feng raised the ceramic piece in his hand, placed it in the sunlight, and looked at it carefully.

It was like a work of art, spotless and white. After high temperature treatment, the surface was very smooth and the glaze was rich. He was very satisfied. (End of this chapter)