In the next competition between Crucible Steel and Bailiang Steel, the former was defeated. Bailiang Steel was worthy of being Bailiang Steel. There was no trace left on the cutter, while the cutter produced by Crucible Steel left an obvious chip.

mark.

But even so, everyone is very excited! When encountering ordinary weapons, the weapons made by Bairen Steel usually make a decisive decision without any room for change. Although the weapons made by Crucible Steel are not strong enough to match ordinary weapons,

It can compete with hundreds of steel-making companies, but it is not completely without competition. In addition, it greatly simplifies the weapon manufacturing process and makes it easier to promote throughout the army.

That night, until the city gate closed, Tian Fan returned to Xiapi full of exhaustion and excitement.

The next day, Tian Fan woke up just as the sky was getting dark. Mi Zhen was still sleeping soundly, and the spring color from last night was still on her face. Tian Fan looked at her pretty face and couldn't help but kiss her gently. Only then did he feel warm from her.

He broke free from his arms and prepared to get dressed and wash up.

This tiny movement woke her up. Thinking of the madness last night, a touch of peach color crept onto her cheeks. Grabbing Tian Fan's hand, she said with charming eyes: "Husband, you got up so early?"

Tian Fan chuckled, reached out and took out a handful on her body, and said: "Zhen'er, I have to go to work! You, hehe, just sleep for a while. Hehe, weren't you a little cruel last night?"

Mi Zhen couldn't bear it. She covered her face shyly and said in a trembling voice: "Husband...jun, you'd better take Qian'er and the others in quickly, Zhen'er can't bear it anymore!"

Tian Fan put on his clothes and said: "Haha, Qian'er and Xiaoqing are still too young, Yu'er...Yu'er is not young in age, but she is even younger in her heart. As for Hui'er..." He said with a full face

Shaking his head sadly, he said: "I have a thief's heart, but I don't have the thief's courage!" As he said that, he patted Mi Zhen's plump buttocks and said, "So, madam, you will have to work harder in the future.

ah!"

Mi Zhen couldn't bear it anymore, and she shrank into bed with a cry!

Tian Fan was not used to being served by Mi Zhen's two dowry girls, Xiao He and Xiao Lian, and Fang Cao and Guizhi were also planning to marry Tang Yi and Tang Er, so he usually had Mi Zhen serve and dress him. But last night

He was too excited and had been tossing a little too hard. Mi Zhen was still soft all over, how could he not feel distressed? Mi Zhen also knew Tian Fan's character, so she was naturally happy to sleep for a while longer.

After having a few bites of breakfast, Tian Fan set off for the Craftsman Camp!

He thought he had arrived early, but when he arrived, he saw that Pu Yuan, Ma Jun and others had been waiting for a long time.

After what happened yesterday, everyone got busy again.

Today Tian Fan did not continue to watch Pu Yuan make steel. With yesterday's explanation and practical operation, Tian Fan believed that Pu Yuan, as smart as Pu Yuan, had mastered all the key technologies of crucible steel making. He took Ma Jun and went straight to Nu

Shoot away.

The crossbow was the task that Tian Fan gave to Ma Jun when Tian Fan and Ma Jun met for the first time. Ma Jun and Mr. Liu also worked hard on this, and it was not until a month ago that the left and right torque of the crossbow was solved.

The problem of spring force balance.

When Ma Jun was studying the crossbow, he absorbed the principle of the bed crossbow base, giving it the ability to turn freely and adjust the firing angle. At the same time, he designed a set of metal racks on the crossbar so that the stringing does not have to be done in one go.

It not only saves effort, but also can adjust the force when the ballista is thrown, so as to obtain the required range.

This thing can not only fire stone bullets, but also crossbow arrows. The cutest thing is that it can also fire jars! Imagine putting oil in the jar, lighting it and shooting it out. After the jar breaks, the flames will burst out. It will be fun.

Very!

Looking at this big guy, Tian Fan nodded with satisfaction. He asked: "Deheng, have you passed the test?"

Ma Jun nodded and said: "Sir, we have tried it! A stone weighing one stone can shoot two hundred and fifty steps. If it is a crossbow arrow, haha, it can reach as far as six hundred steps! But..." After a slight pause, he

He continued: "For the user, the crossbow shock will be unbearable every time it is fired. In addition, it is too big and can only be used when defending a city, which has some drawbacks."….

Tian Fan glanced at him and said with a smile: "Deheng, are you so exhausted from being busy with the craftsman camp every day?"

Ma Jun was stunned and asked: "Why do you say this, sir?"

Tian Fan pointed at the crossbow and said: "Haha, look at this thing, is it as big as a hundred-fire crossbow? A hundred-fire crossbow can be carried on a vehicle, why can't this thing? Furthermore, if this thing is installed on our warships, then our water

Who else is the army afraid of?"

Ma Jun suddenly realized it and said repeatedly: "Oh, I am really stupid!"

Tian Fan continued: "As for the problem of anti-seismic force you mentioned, I have a way to solve it! However, this method still relies on the airs I mentioned yesterday..." Shaking his head, Tian Fan said: "Haha, as he said it, he returned

We’ve reached the starting point!”

Ma Jun smiled slightly and said, "Sir, can the airs you talk about really come true?"

Tian Fan nodded and said: "Of course, it's just... Puyuan needs to provide enough refined iron!"

Turning his head, Tian Fan saw that Ma Jun's eyes were red and his cheeks were much thinner than when he first met. He couldn't help feeling a little distressed. He patted his shoulder and said, "Deheng, work is important, but you can't focus on it!

Sometimes, if you go out for a walk and have some fun, inspiration may come to you. Well, I have some supplements at home that you can order in a few days."

Ma Jun chuckled and was not polite. He cupped his hands and said, "Thank you, sir!"

Tian Fan nodded slightly and asked, "Are there any flaws in the ballista?"

Ma Jun nodded and said: "Sir, this ballista is still a primary product. It is the first one we have produced. There are still many problems!"

"Oh? If you have any questions, please tell me!"

Ma Jun nodded and said: "The main problem is the winding! The crossbow is very powerful. If the string is full, it will have a strength of nearly two hundred stones. Winding is too laborious. Secondly, the fit between the various parts of the ballista

It is not very reasonable, resulting in a limited service life. For this one, after we tested it sixty times, the torsion springs on both sides had different strengths, and cracks appeared in many parts."

Shaking his head, he said with some sourness: "This thing is not as simple as I originally thought!"

Tian Fan nodded slightly and said: "It doesn't matter. Now that the main structure has been completed, you can just debug it carefully! Well, in this way, I don't have high requirements for the service life of the ballista, as long as you can use it two hundred times without

As long as there is a deviation. What do you think?"

Ma Jun nodded and said, "Don't worry, I'll do my best!"

Looking at the ballista, Tian Fan said: "As for the winding problem you mentioned, well, let me find a way! Yesterday I said that a moving pulley should be installed at the winding position. It looks like you

I don’t think so. Haha, actually...this movable pulley block has to wait. I think the key stress-bearing parts also need to be made of fine iron."

After a pause, Tian Fan continued: "Actually, you can also use a winch, but the energy saved by the winch is very limited. I think we should wait. Anyway, there will be no war in the near future, so we are not in a hurry!"

Ma Jun nodded noncommittally and said nothing.

Tian Fan shook his head and thought in his mind that steel, the amount of steel produced by Pu Yuan, has become the key point of many weapons! Mo Dao, bag armor, ballistae, hundred-shot crossbow, etc. all need steel!

The two discussed the issue of the ballista until noon arrived, and then headed to the blacksmith area.

Facts have proved that Pu Yuan had great luck yesterday! The quality of the first batch of steel was very good, but the quality of the second batch of steel tested today was very poor! The weapons produced were much worse than those of the Fifty Sword Refiners.

When Pu Yuan was worried, he saw Tian Fan coming. He quickly stepped forward and explained the situation, leaving Tian Fan stunned.

After pondering for a while, Tian Fan said: "Pu Yuan, actually... crucible steelmaking is also a complex technical task. How much raw materials should be added, how much iron ore powder should be added, how much pig iron should be added, these all need to be explored by you. Don't worry, take your time.

! This furnace of steel cannot be used to make weapons because it is not hard enough. However, if it is not hard enough, its elasticity must be very high. This kind of steel is suitable for making the frame of a crossbow. Your next job is to master the requirements for steelmaking.

The heat, the proportions needed to make soft steel, and the proportions needed to make hard steel, just study it carefully!”….

Pu Yuan nodded and said, "Sir, I understand!"

Tian Fan patted him on the shoulder and said: "Just study slowly, and Mr. Zhang, you also need to learn. I don't require you to be able to hit every target, but you must be sure. You can't wait for steel every time.

After it came out of the furnace, after you tried it, you realized that this furnace of steel is not suitable for making swords, but is only suitable for making other things. Do you understand?"

Pu Yuan and Zhao Sheng nodded repeatedly and said, "I understand!"

Tian Fan nodded slightly and said: "During this period, I will come here every day. If you have any questions, we can discuss them. Also, don't be tired. I don't want you to collapse from exhaustion after the steel is refined!"

The two nodded and couldn't help but feel touched. The adults care about themselves so much, wouldn't it be a shame if they couldn't get results?

Tian Fan chuckled and said: "You two, as well as Deheng and others, let's eat first and have dinner. Let's discuss the steel frame and pulleys that I have in mind."

Several people clasped their fists in agreement and went to eat together.

"Look, the moving pulley block I'm talking about looks like this. The main component has two parts. The two parts are almost the same. They are both crossbars with a steel frame structure. There are several pulleys on one side. There are grooves on the pulleys.

The distance between the pulley and the crossbar is controlled within half an inch, which can prevent the rope from coming off the pulley. Among the two crossbars, one is connected to the iron frame, and the other has several iron hooks on the back side of the pulley.

The distance between the hooks is equal to the distance between the crossbow strings on the arm of the hundred-fire crossbow. When winding the hundred-fire crossbow, you only need to hook the iron hook to the crossbow string, and then pull the rope on one side of the pulley to complete the winding action.

See how"

This is in a house in Jiangzuo Erying. Everyone has just finished eating and is discussing the moving pulley block that Tian Fan mentioned.

After Tian Fan explained, everyone fell into deep thought.

After a while, Ma Jun nodded and said: "Sir, this pulley block is feasible, but how much energy can it save?"

Tian Fan thought for a while and said: "These two sets of pulleys are composed of six pulleys. Well, theoretically speaking, it should be able to reduce the power of the winding to about one-tenth of the original! Well, that is to say,

With the strength of one hundred and fifty stones, it only takes about fifteen stones to complete the winding!"

"How much?" Ma Jun's voice turned into a chicken cry! He knew that moving the pulley would save effort, but could it save effort to this extent? He couldn't help but doubt it!

Tian Fan looked at the disbelief of the few people, laughed, and said: "Look, how many ropes pass between these two sets of moving pulleys?"

Ma Jun counted several people and finally came to a unanimous conclusion - twelve!

Tian Fan nodded and said: "Yes, exactly twelve! Twelve ropes share the strength of the one hundred and fifty stones, which is equivalent to each rope only bearing one-twelfth of the strength. However, this

This is just a theoretical result. In actual operation, the influence of friction must also be considered. The pulley is made of steel, and the middle bearing is lubricated with lubricating oil mixed with butter and beeswax. In this way, the friction will be reduced a lot.

, that’s why I said it takes about one-tenth of the strength!”

Everyone was confused, and Ma Jun asked in a strange voice: "Sir, according to your opinion, if there are ten ropes in the middle, it will require one-tenth of the strength. If there are twenty ropes, wouldn't it only require twenty

One-half the strength?”

Tian Fan chuckled and said: "Deheng is a master, that's exactly what it is! However, this is only theoretical data and cannot be accurate."
To be continued...