Yancheng. read

When Wangfu's new products caused a sensation in Jinling, Zhao Xu was admiring Dasong's first vernier caliper with Wang Ying in the War Department.

This caliper is cast from pure steel and polished to appear bright white.

There are even graduations on the edge of the steel ruler.

After the first original ruler appeared, it became much easier to make the engravings with reference to the original ruler.

Therefore, after mastering the vernier caliper process, scaling becomes a simple matter.

"Well, it's very good." Zhao Xu looked at the vernier caliper repeatedly and was very satisfied. "Our War Department needs a group of craftsmen who can do fine craftsmanship. You should keep this in mind."

The accuracy that the human eye can judge is 2 millimeters.

Therefore, humans can polish workpieces with accuracy requirements within an error range of 2 millimeters by hand.

The existence of original rulers and vernier calipers relies on the accuracy of the human eye.

If people are equipped with some tools, this accuracy can be improved.

He still remembers a contemporary news report that stated that in a certain aviation aircraft industry, due to the small number of fighter parts, high processing precision and difficulty, they often need to be polished by hand.

His next fitter even improved the hand-grinding accuracy to three thousandths of a millimeter.

This shows that human potential is unlimited.

Of course, this is just an example, and this fitter can only do it with the help of contemporary high-power electronic magnification lenses.

He cannot provide such advanced tools.

However, after the glass comes out, the magnifying glass can still be considered.

With the vernier caliper, there is a magnifying glass.

These craftsmen can make fine parts like clocks, and their level is sufficient.

"Yes, Your Highness, this original ruler and this vernier caliper were both made by a craftsman named Mo Wen." Wang Ying said, "Xia Guan has already raised his monthly salary."

Zhao Xu nodded with a funny look on his face, "Don't ask? This name is quite interesting."

Wang Ying also laughed, "Speaking of which, I have to thank Zhou Yi. This Mo Wen is a craftsman from Jinzhou and was a carver before."

As he was talking, he saw a craftsman passing by and immediately stopped him, "Don't ask, come here."

Zhao Xu looked in the direction of Wang Ying's finger and saw a short, dark-skinned young man, only about 1.5 meters tall, walking towards him.

The young man's face was naturally dull. When he arrived in front of Zhao Xu, he bowed to Zhao Xu at Wang Ying's reminder.

Then he lowered his head and said nothing.

"No courtesy." Zhao Xu helped Mo Wen up.

He said: "Making the original ruler is a great achievement. What reward do you want?"

"Master Wang has rewarded the younger ones." Mo Wen replied.

"Master Wang is Master Wang, and I am the king. If I am happy today, just say so." Zhao Xu said with a smile.

After Mo Wen heard this, he glanced at Wang Ying and saw Wang Ying nodded.

At this time, his body suddenly twisted uneasily.

After hesitating for a long time, he said: "Because of my short appearance, I am still a bachelor at the age of twenty-five. Can Your Highness reward me for being a wife?"

"Hahaha..." Wang Ying and Zhao Xu laughed at the same time.

When Mo Wen saw this, he thought the two were laughing at him, so he lowered his head again.

But what King Yan said next made him excited, "Master Wang, I will leave this matter of marriage to Mo Wen to you. I will give you one month, not ten days. If you can't do it, I’ll fine you one month’s salary.”

"Oh, Your Highness, just leave it to your subordinates. If you can't do it, you can be fined for two months." Wang Ying said with a smile.

Don't ask for great joy, just thank you profusely.

Zhao Xu joked: "But if you have a mother-in-law, you can't delay the work of the War Department."

"This will definitely not happen." Mo Wen smiled naively.

However, Mo Wenti's request reminded Zhao Xu.

The Bingzhan Division is no different than the Monk Temple.

The ancients believed that there were three types of unfilial piety, the greatest of which was to have no descendants.

If this problem is not solved, some older craftsmen may not be able to concentrate on their work.

During this period of time, Zhou Yi has been sending the slaves he bought to the Military Division every now and then.

The men stayed in the Military and War Department, while the women were temporarily placed in accordance with his requirements.

Thinking of this, he said to Wang Ying: "It's not just a matter of Mo Wen, it's just that the craftsmen who have reached the age and have no family have been arranged for them."

The conversation between the two was clearly heard by the craftsmen working around them.

They suddenly became happy and winked at each other.

He seemed to have more strength to work.

Wang Ying saw it and smiled bitterly, "His Highness still has unique vision. Why didn't I think of this? As the saying goes, only when you have a family can you feel at ease."

The two chatted a few more words.

Zhao Xu and Wang Ying went to the crucible steelmaking workshop together.

Vernier calipers were made, and the problem of fine parts on the flintlock musket was solved.

But this only solves one part of a whole chain.

The boring tool for cutting the barrel of the artillery and the drill bit for drilling the gun barrel have not yet been obtained.

And this depends on high carbon steel.

This time when he came to the Military Division, in addition to inspecting the vernier calipers, the most important thing he did was to ask Wang Ying to refine high-carbon steel.

The hardness of steel changes with the carbon content.

The less carbon the steel contains, the softer it is, and vice versa.

In the crucible steelmaking method, adjusting the carbon content of steel only requires adjusting the ratio of pig iron and wrought iron.

Zhao Xu is clear about these proportions.

So he simply asked Wang Ying to get a pen and paper and write three ratios on the paper.

The first ratio is the ratio of producing mild steel, the second is the ratio of medium carbon steel, and the third is the ratio of high carbon steel.

While writing, he explained the significance of carbon in steel.

Because Wang Ying was busy, he couldn't go to the school in time every day to listen to the lectures, so he could only take the opportunity to popularize science with him.

"That's it." Wang Ying suddenly realized.

What King Yan told him was a key to changing the hardness of steel.

In the past, the armor, weapons, and cannons made by the Military Division actually used medium carbon steel.

At this time, he asked the craftsman to free up a crucible and weigh it. He weighed the pig iron and wrought iron and put them into the crucible in proportion to melt them.

Under the high temperature of coke, the iron melts quickly.

After turning into pure molten steel and removing impurities floating on it, Wang Ying ordered the craftsmen to pour the molten steel into the mold.

Before it cooled completely, he asked a craftsman to forge it into an awl.

"Take a steel plate and pass it." After the awl was completed, Wang Ying couldn't wait to order the craftsman to bring the steel plate.

Then he took a hammer himself and smashed the awl into the steel plate.

"Nail...Nail..." After several soft sounds, the awl penetrated the steel plate.

Then he found an awl made of medium carbon steel and smashed it a few times. The tip of the awl was bent and only went in halfway.

Wang Ying was completely convinced by the facts before him.

He said: "Your Highness's knowledge really impresses me."

Zhao Xu looked slightly proud. He was about to talk about using high carbon steel to make drill bits and boring tools.

At this time, the guards from the Guards Corps came to report Xu Hark's arrival.

Asking the guards to let Xu Hark in, Zhao Xu picked up the specifications of the stroke drill.

Before I had even painted a few strokes, I heard Tsui Hark's urgent voice.

"Your Highness, something has happened. I have probably figured out the Yuan family's conspiracy with Xue Pan and Zhu Rong. I'm afraid they will take action in the next two days."

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