Although Changluyun has strong martial arts, after all, he has stayed in the mountains with an old nun since he was a child, and he has not seen much, and he has long been dazzled when he sees the materials produced by various workshops.
Especially when I went to the glass workshop, I couldn't walk anymore when I looked at the transparent glass products and mirrors.
It wasn't until Li Mu found someone to move the few things she was reluctant to let go to the house arranged for her that she reluctantly followed Li Mu's brothers to the Shenjiwei station.
After reviewing the lineup of the Divine Guard, Evergreen Cloud was instantly attracted and had to train with the Divine Guard.
Li Mu could only let her stay in the Divine Guard.
Li Mu glanced at Li Yi, and Li Yi nodded knowingly.
The two brothers turned their horses and headed towards the hill.
All the way, the closer they got to the hill, the more and more guards, and the tighter and tighter they were, until at the foot of the mountain, Li Mu and the others dismounted in front of a sentry post.
The hill had been hollowed out by a quarter, and was reminded by Li Tai's attack that after the Li Mucai incident, he had the idea of moving the critical workshop into the belly of the mountain.
So he concentrated manpower and built an underground structure in the middle of the mountain with cement and steel.
All the high-tech content and ordnance are concentrated in the belly of this mountain.
And what Li Mu is looking at today is not these workshops, but a technical workshop, which is equivalent to a laboratory for future generations.
It is home to the best craftsmen in the Lijiazhuang workshop, and it is safe to say that this is the most technologically powerful area in Datang so far.
Brother Li Mu's face was the reason why he was not stopped by the secret guards when he entered this laboratory.
In the laboratory, which covers an area of about five or six acres, there are many rooms, and the largest storage room is full of all kinds of instruments, in Li Mu's words, these are the machines that make machines.
It's crude, but it's good enough to solve a real need.
Li Mu and the others did not stop, but kept walking inside, and did not stop until the last place.
Li Mu and the others entered the room, and about a dozen craftsmen were busy with their heads down.
Li Mu walked behind one of them and asked, "Old Zhangtou, how is the rifling test of the barrel?"
The craftsman was obviously startled when he heard this, raised his head and found that it was Li Mu, and replied with a blank slant in his eyes: "Isn't this busy?"
Although Li Yi knew that the belly of this mountain was the biggest secret of Li Jiazhuang, it was also the first time he entered the laboratory, and when he saw that the old craftsman was not inferior to Li Mu, he scolded loudly: "Bold."
Do you know who you're talking to?"
The old man rolled his eyes at Li Yi and ignored his scolding.
Li Mu smiled and dissuaded Li Yi, who was furious, and said, "Don't be like him, he is a bull." ” Although Li Yi wondered why Li Mu was so tolerant of this old man, it could be seen that Li Mu spoke out to dissuade him, so he stopped talking.
The old craftsman lowered his head and continued to tinker, and said: "The three methods you said have been tried, such as the scraper method, the hook knife broaching method, and the combined ring knife broaching method, and it is too time-consuming to engrave this rifling." ” Li Mu said with a smile: "Don't worry, try slowly." ” "In nine days, a rifling wire was trial-produced."
The old craftsman pointed to a swarthy steel pipe in the distance.
Li Mu was overjoyed, and he was not afraid of getting dirty, so he ran to the barrel and aimed at the rifling in the tube with his eyes, which was very rough, and even the sawtooth that was drawn out by hand could be seen with the naked eye.
But Li Mu knows that this is already the limit, rough and jagged are not afraid, it takes manpower to polish, but it takes too much time, such a craftsman needs nine days to complete a rifling, and more than a dozen of this tube have to be produced until the year of the monkey and the month of the horse to form a batch And I don't know if this shoddy barrel can be used.
However, Li Mu was still very happy, after all, there was a substantial breakthrough.
"Old Zhangtou, I want to reward you again."
"No need."
The old craftsman shook his head and said, "I'm alone, and I'm locked up in this mountain by you, even if you reward me with a mountain of gold, what's the use of rewarding me, if you really want to reward me, then let me out." ” Li Mu was willing to let him out and hurriedly laughed: "You are an important person in this laboratory, and no one can miss you without you." ” "Hey, hey."
The old craftsman sneered.
Li Mu rubbed his nose in embarrassment and promised, "Don't worry, after I make a rifling that I am satisfied with, I will definitely let you out." ” I don't want the old man to ask, "Is this true?"
"Of course."
"That's good.
You come with me.
The old man led Li Mu to the other side, took out a steel rod from a pile of iron utensils and handed it to Li Mu.
Li Mu looked at it in surprise, this is not like the previous one, the last one is a tube, but this one is solid, and it is obviously much longer.
But there are seven rifling wires on the stick.
These seven rifling wires are male, that is, convex, about two millimeters in width and one and a half millimeters in height.
Li Mu asked thoughtfully: "Do you want to use this stick to poke directly into the red-hot steel pipe, there is no suitable pressure machinery for one-time molding, and I am afraid that there will be too many waste products by manpower." ” The old man frowned and thought about it, "I can try it once I formed." ” "Ugh."
Li Mucai realized that the old man was not what he thought, "Then what do you mean?"
The old man pointed to the stick in Li Mu's hand and said, "My method is to burn the steel pipe red and soft, put it into this oiled steel rod, and then beat it moderately outside the steel pipe to make it tight, and then wait for the steel pipe to cool down, and then pull out the steel rod." ” Li Mu understood what the old man meant, using the principle of thermal expansion and cold contraction, first let the steel pipe expand, and it could be inserted into the stick that could not be inserted because of the rifling protrusion, and then beat the steel pipe to bite the steel rod to form rifling, and then wait for the steel pipe to cool down and shrink the rifling to form, and then pull it out.
Thinking of this, Li Mu suddenly thought of a question and asked: "Old Zhangtou, when the cannon barrel cools down, how can you pull it out when you bite this steel rod." ” "Then drill through the steel rod, then pull it out, and if it doesn't work, crush the steel rod."
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It's a stupid idea, but it's a solution.
The old craftsman urged on the side: "You go out quickly, I will try slowly, even the method you just said will be tried, you just need to remember what you promised." ” Li Mu and the others were driven out by the old craftsman.
On the way out of the mountain, Li Yi couldn't help but ask curiously: "Big brother, what is the use of this steel pipe?"
Li Mu replied: "This will be the last barrier of Lijiazhuang. ” Li Yi saw that Li Mu refused to say it explicitly, and he didn't ask questions, but just said: "The expansion of the Shenji Guard, coupled with the expenses in the belly of this mountain, Zhuangzi has no way to make ends meet. ” Li Mu had a chill in his back, burning money, last year, Zhuangzi earned no less than 1.5 million yuan, but now he still can't make ends meet.
But Li Mu knows that everything needs to be invested and costed
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