Bright Sword: Starting from the Improved Grenade

The emergence of the pot-carrying machine provided the arsenal with a more stable and powerful power source.

Now, not only do the lathes in the factory no longer need donkeys to grind the mill, but even the factory that Li Yuncai led to build can work in two shifts because of the installation of electric lights.

The construction period has been greatly shortened, which is really cause for celebration!

After the pot-carrying machine was manufactured, Zhao Tianyang prepared to start his next plan, making cement.

But after observing the terrain of Huangyadong, he found that there was no suitable place to build a cement factory. The land here was too precious and could only be used for military affairs.

It seems that the cement plant can only be built outside. Thinking of this, Zhao Tianyang's mind immediately popped up Chiyu Village and the village chief.

The people from their village who were arranged by the deputy director of the Political Department to repair the factory should all be trustworthy!

“Cement factory!”

The head of Chiyu Village looked at Zhao Tianyang in doubt and wonder: "Director Zhao, are you kidding? Are you really going to open a cement factory in our village?"

"Yes."

Zhao Tianyang nodded: "You can see that we recently wanted to buy some cement for the factory building but there was no place to buy it. In the end, we could only use clay and hay to fill it, so I plan to build a cement factory myself."

"That's it!"

The village chief immediately said enthusiastically: "Sure, there are many idle men in our village. I wonder when Director Zhao plans to build the factory?"

"When you finish repairing the factory building, I will work out the cement formula first."

"Row."

The village chief agreed without hesitation, saying that if the village had a cement factory, they would no longer have to rely on the weather for their livelihood.

After discussing with the village chief, Zhao Tianyang went down the mountain, found Liu Ransheng, and asked him to buy 40 kilograms of limestone, 10 kilograms of bauxite, and 10 kilograms of gypsum.

There are many kinds of cement formulas. The ones that everyone is most familiar with should be the various traditional cements. Because they are too simple, I will not list them one by one here.

The cement that Zhao Tianyang is going to make today is "medium-heat silicate cement", which is specially used for building hydropower station projects.

This type of cement is used in the Three Gorges Dam, Xiangjiaba, Jinping and other hydropower stations.

In order to obtain medium-heat silicate cement, you have to make cement clinker first. Zhao Tianyang used a hammer to hammer the limestone and bauxite bought by Liu Ransheng into powder.

Then mix 60% lime powder, 15% clay, 6% bauxite and 6% rust in proportion to form a mixed material.

The prepared materials are put into the coking furnace for high temperature forging and then cooled to produce silicate cement clinker.

After the clinker is obtained, 60% of the clinker is mixed with 3% of gypsum, and then put into the coking oven again for high-temperature baking and then cooled.

From then on, "medium-heat silicate cement" was completed.

Zhao Tianyang added water to stir the "medium-heat silicate cement" and built a one-meter-high and one-meter-wide cement pier next to the coking oven, preparing to test whether it was qualified.

"Okay, now it's just waiting."

.........

The next day, Zhao Tianyang came to Liu Guifu's tent.

"I heard from Mr. Liu that the bullet reloading machine has been completed?"

"Director, you're here!"

Liu Guifu pointed to a small machine on the long table in front of him and said, "Yes, it has just been assembled."

Seeing this, Zhao Tianyang walked over and took a look: "Have you ever experimented with this?"

"Have!"

Liu Guifu nodded and said, "Because I considered that the bullet reloading machine can be used by troops at the regiment level, I also designed a simple process."

“The first thing is to restore the collected old shells by squeezing them.”

"The second step is to make the bullet head. The scrap copper is melted and poured directly onto the steel mold, so that multiple bullet shells can be cast at one time."

"At the same time, because the surface of the cast bullet shell is very rough and the size may change, it needs to be trimmed. I invented this small trimming tool."

As he spoke, he took an inconspicuous little thing from the table beside him.

"That's it. Just stick the shell into the hole in the tool and turn the handle to quickly trim the shell."

"It's the same principle as a pencil sharpener!"

Zhao Tianyang took the tool and looked at it, a little surprised at Liu Guifu's imagination.

"Once they have the bullet shell, they can directly pour molten lead into it to form a complete bullet."

"The last step is to load the propellant, and then use this bullet reloader to compact the primer and bullet to get a complete bullet."

Liu Guifu picked up another bullet from the table and put it in Zhao Tianyang's hand: "After experiments, the bullets made by this method are basically the same as the original ones."

"Amazing!"

Zhao Tianyang held up the 7.92x57mm bullet, looked at it, and praised it with satisfaction.

"That's it. Just write up the drawings and process specifications and give them to me!"

"Row."

Liu Guifu nodded.

After leaving Liu Guifu's tent, Zhao Tianyang went straight to Liu Lao's tent.

He had discussed the semi-automatic bullet production line with Mr. Liu a few days ago, and now he was going to see if there was any result.

"Mr. Liu, Comrade Liu Guifu's bullet sub-loading machine has passed the inspection! Haven't you finished your semi-automatic production line yet?"

As soon as he entered the tent, Zhao Tianyang started shouting loudly.

"Haha, I knew you were coming. Take it and have a look!"

Mr. Liu was not angry. He smiled and handed him six design drawings.

"Let me see!"

Zhao Tianyang took the drawing and started looking at it.

The semi-automatic production line designed by Mr. Liu includes raw material preparation, which involves first purifying the copper ore or collected copper coins in a blast furnace.

Then, zinc is extracted from the copper slag obtained when purifying brass using the zinc evaporation method, and finally brass is smelted using refined copper and zinc.

Step 2: Warhead manufacturing. For this step, Mr. Liu directly copied Liu Guifu’s warhead manufacturing method, so I won’t go into details here.

Step 3: Use a punching machine to directly punch the brass block into a bullet casing.

Step 4: Punch the cartridge case with a punch press

Step 5: Use a rolling machine to press the brass into thin sheets, and then use a punching machine to punch out the bottom flash.

Step 6: Liu Guifu’s bullet reloading machine was moved here again, and I won’t talk about it here.

"So the only thing you need is the punching machine. The tying machine is designed by you, and the others are borrowed from others!"

Zhao Tianyang was a little speechless. The blast furnace designed by him was used to refine brass, and the second and fifth steps used the invention of Comrade Liu Guifu.

"Can you just say it's okay?"

Mr. Liu asked with a smile.

"It's OK, but the problem is that this is semi-automatic, and it still requires manual operation."

Zhao Tianyang said aggrievedly.

"Okay, that's enough. This is the limit of our conditions."

Mr. Li consoled him: "According to my estimation, these machines can produce several hundred rounds of ammunition a day."

"Okay, this is the only way!"

Zhao Tianyang nodded helplessly: "You can handle the punching machine, punching machine, and stamping machine yourself, as for the brass needed for the bullets, let me do it!"

"Row."