Yang Gan hammered his chest and said with a sad look on his face, "I've been here for almost three years. Do you know how I have spent these three years?"
Zhang Yumeng blinked and said, "Hoofs, elbows, dongpo meat, bathing, foot soaking, sauna?"
"Get out of here~~!"
Zhang Yumeng smiled and immediately pointed out the next question.
"Then how do you calculate the metal ratio?"
Yang Qian thought for a while, then took out the information from the bookshelf and started reading.
"One-fifth of the total is gold and two-thirds is tin, which means the ratio of copper to tin is five to two, that is, copper accounts for 71.43% and tin accounts for 28.57%."
"I have obsessive-compulsive disorder. It's just 70% bronze and 30% nickel. What do you think?"
Zhang Yumeng calculated carefully and couldn't help but widen his eyes. "Damn it, you are really evil. Let me tell you clearly. These days, everyone counts the money in their hands based on the bronze content and weight. Don't worry. It’ll be screwed up then.”
"Also, the ratio you just mentioned is bronze. In this case, the bronze is not even 50%, okay?"
Yang Qian was silent for a while and had some thoughts in his heart. What Zhang Yumeng said was indeed reasonable, but he was unwilling to do so and asked hurriedly.
Then what difference will there be in the color if you do it this way? .five
"Of course there will be. The color will definitely be very light, and it may turn white."
The corner of Yang Gan's mouth twitched fiercely, he was afraid it wouldn't work.
At this time, Mu Qing said, what is the purpose of minting coins? If it is to make money, then follow Yang Qian's method.
If it is to facilitate transactions and unify the currency, it should be done from a security perspective.
Zhang Yumeng laughed and said, "It's actually very simple. Just add 10% nickel to achieve wear resistance and aesthetics. It will look beautiful. Adding too much is not good."
After saying that, she started writing and drawing on the plan.
"Look, if it's bronze and nickel, 90% bronze + 10% nickel will have the best effect and won't destroy the market."
"Whenever bronze is gone, if you cast it yourself, then 65% pure copper + 25% tin + 10% nickel can achieve the same purpose."
After thinking about it again and again, Yang Qian still adopted Zhang Yumeng's opinion.
"Then I'll leave it to you for the craftsmanship."
Yang Gan looked casual and spoke quickly, but Zhang Yumeng was not a fool and asked immediately.
"What kind of craftsmanship? What do you want from me? Tell me clearly~~!"
Yang Gan said of course, "We must use modern coinage methods. With the current coinage technology, I'm afraid it's not efficient enough."
"really!"
Zhang Yumeng's face was full of depression. This guy didn't let himself participate in the relationship, but set a trap for himself.
But I can’t get off this pirate ship for the time being, so I’ll first see what I’m being asked to do.
"Then I need to know how coins are minted now, and then I'll see how to adjust them."
Yang Gan directly called Ou Yexia over.
He turned around and didn't know what the young master wanted to do with him.
"Sir, do you have any big orders?"
Yang Qian said calmly, "I got the right to mint coins."
"Pfft~~~!"
Ou Yexia squirted out a mouthful of water and looked at Yang Gan stupidly.
"Coining rights? Coining rights!!!"
"Sir, do you mean that we can mint coins legally? Wouldn't that be a development!!!"
Yang Gan laughed and said, "What do you want to do? This is a matter that benefits the country and the people, not just me. If it was just to make a fortune, I would have minted private coins long ago. With my current status, how could anyone else find it?" Am I in trouble?"
Ou Yexia thought about it and immediately touched his beard. After doing it seriously, he asked, "What can I do?"
"Can you mint coins?"
Yang Gan asked the most critical question.
Ou Yexia smiled and said, "Although I have never cast it before, the craftsmanship is not difficult. My kindness
The teacher has minted coins before, so naturally I can do it too. "
"Tell me."
Ou Yexia nodded and began to introduce.
It turns out that coinage in this era required money models, that is, molds.
Nowadays, pottery molds are used, which are composed of native soil, clinker, and charcoal ash. The three are mixed with water in a certain proportion.
After sinking, floating and refining the mud, it can be used to make the money mold. The cavity and sprue of the coin are carved out one by one on the money mold. After the two money molds are put together, they can be used for pouring.
It was simple, and Zhang Yumeng immediately heard the shortcomings.
This engraving process is time-consuming and labor-intensive, inefficient, and the characters on the engraved coins vary greatly. Unless they are from the same coin model, the details of the coins will vary greatly.
After explaining the entire process, Yang Qian was also heartless and sent Ou Yexia back directly. It was after Mu Qing's reminder that he left him to stay for feeding. He didn't want to feed, but forgot about it.
While feeding, Yang Gan was so busy thinking about things that he didn't even taste the food.
After eating well, they couldn't wait to rest, so the two began to discuss intensely again.
Zhang Yumeng feels that it is easier to use good materials to make molds.
But Yang Qian didn't think so, he had higher requirements.
"Zhang Yumeng, there is a hardware factory near my hometown. I almost grew up listening to the sound of those machines. I don't think it's complicated if you can get those machines out."
Zhang Yumeng glanced at him and sneered, "You don't even know what machines are, and you still want me to build them?"
Yang Gan said with a look of reminiscence, "When I was young, I went to play in that small factory. The machine was not very big. Every time I hit it, a part would fall off the steel plate. It was very convenient."
"Oh~~I see, you're talking about the stamping machine, right?"
"Press? Then I don't know. Anyway, that thing keeps pressing on the steel plate, and the parts come out in a specific shape. I find it super convenient and fast."
Zhang Yumeng shook his head. Yang Qian liked to use mechanized things, but he didn't even know what a machine was.
According to mechanization, large equipment will definitely not be able to withstand it. Without stable voltage and current, these ultra-large equipment cannot be even considered.
Zhang Yumeng started to write and draw, and then discussed with Yang Qian. After all, he had never minted coins. If he had minted money in his previous life, it would be very punishing.
According to the process, it is not difficult to make the copper-tin-nickel alloy into a plate, but how to make it have the same thickness is the difficulty.
After all, Zhang Yumeng didn't just make a living, so he was stuck.
However, Yang Gan reminded that he knew of a machine in which two rollers rotate at the same time, and the plate will be flattened as it passes. If it is too thick, you can design several clips, tightening each time, so that one piece is one centimeter. The taller board will become the desired thickness and the area will become larger.
Zhang Yumeng immediately realized that this was a steel rolling mill. After he had a clear idea, he went directly to the next step.
Now that we have the plates, we need the machine Yang Gan mentioned. He couldn't name it, but Zhang Yumeng knew that the machine was called a stamping machine.
After installing the mold, the shape can be punched out directly according to the mold.
Now that the round coins are in place, the next step is to print the fonts, which can also be done with a stamping machine.
Review the complete process.
First: Smelting copper-tin-nickel metal to make rough plates.
Step 2: Use a steel rolling machine to roll the palm-sized plate to the thickness you need.
Step 3: Use a punching machine to punch out the required round square hole coins.
Step 4: Use steel sand to roll inside the drum to remove burrs.
After these four steps, the resulting coin will theoretically be bronze-colored, shiny, corrosion-resistant, friction-resistant, and highly hard. Even if it is only one millimeter thick, it will be very difficult to bend it after it is made into a coin. .
Those who are not human do not count.
Yang
Qian looked at Zhang Yumeng who was deep in thought and asked, "Can you make those rolling mills and stamping machines?"
Zhang Yumeng smiled and said, "Yes, I can also build a nuclear bomb."
"Damn it, you're so awesome, are you kidding me?"
"You were just joking with me first, okay?"
After untying her hair, Zhang Yumeng kept grabbing her hair and seemed extremely irritable.
"Speaking of which, I can actually help you."
"just you?"
Yang Gan said sincerely, "Of course, once this thing comes out, business will naturally become more prosperous, which is a good thing for us."
Zhang Yumeng clasped her hands and counted them and said, "You can't draw, you don't understand physics, and you don't understand mechanics."
She suddenly came back to her senses, frowned and said, "Hey, I just can't figure it out. You don't usually come into contact with these machines, how do you know about them?"
Yang Gan was helpless and spread his hands, "Isn't it because I don't have a girlfriend? I watch videos every day, watching other people fishing, repairing donkey hooves, knife forging competitions, opening warehouses, etc."
"Awesome~~~!"
Zhang Yumeng gave him a thumbs up. He was exhausted every day. After becoming famous in his previous life, he filmed movies every day, one after another, and he didn't even have time to go back for the New Year.
It's not like this animal is so free. He still has time to watch videos, but he doesn't even have time to catch up on sleep when he is free.
Seeing Zhang Yumeng scribbling on the white paper, Yang Qian found a comfortable position and lay down. The devil's muscular man project in the past few mornings almost killed himself.
"Yang Gan, are you taking a shower today?" Krisna came over, kicked Yang Gan and said.
Yang Gan had a lazy look on his face, glanced at him and said, "I'm so exhausted. I wanted to sleep, but now I'm even sleepier."
"Then you smell like herbs. It smells too bad at night."
After saying that, Krisna took two steps back in disgust.
Yang Qian leaned close to his armpit, smelled it, and said expressionlessly, "No."
"Zhang Yumeng, can't you smell my smell?"
Zhang Yumeng frowned, scribbling on the design, and said impatiently, "I can smell it from three miles away."
"You don't care?"
"Yeah, I do, but I don't care anymore when I hear about the coinage rights."
Yang Gan grinned. The two people's views were indeed very consistent.
"Mengmeng, you have to be good. I'll take a bath and come back to be with you."
"Pa~~~!"
Zhang Yumeng put down the pen decisively and wiped the sweat from his forehead, "I want to wash it too."
