Chapter 241

After a few sips of tea, a group of people want to ask all kinds of questions.

Qin Murong ignored them. Instead, he went out of the house, squatted on the ground and began to dig.

After looking for two or three kinds of soil, we found that there was no suitable one, so we prepared to dig deeper.

"Sir, what are you doing?"

"Earth covering."

"Earth cover? What is that? "

"It's the last firing that needs to be covered with earth to burn the blade Well, to put it simply, I didn't use any technology of steel encasement for this knife, which leads to the blade and blade have the same hardness and toughness. This is also the main reason why I say you are backward here. Casting may not be so backward, but if the blade material is not handled properly, it is really backward. What is our pursuit of sword? First of all, you should have enough toughness and enough elasticity, but if you have good toughness and good elasticity, the hardness is not good, the edge will not be too sharp, and the retention of the edge is also very low. For example, your knife can curl, what is the curling edge? That's iron! Isn't the most basic standard of steel rather bending than bending? So what we pursue is that the blade and blade are different. "

"But why do the same materials have different properties? And so extreme different? "

"So I'll leave it to fire! It's no shame to turn to nature for what people can't do. "

"Well And how? "

Iron old man desperately asked, desperately remember, if it is not due to face, he now want to take a small book beside the record.

Qin Murong said: "this is the purpose of covering the earth! Temperature and quenching will make the steel properties change dramatically. This is because there is a molecular structure inside the steel, which will change greatly with the sudden change of temperature. This is the change of austenite and martensite Cough, this is more complicated. I told you that you would not understand. To put it simply, the places that are burned and quenched at high temperature will become very hard, but the toughness is not enough, especially easy to break. The places that are not treated by these methods will not have enough hardness, but enough toughness. "

"Then how to separate? You can't Just burn the blade, not the blade, right? This Even if only one place is burned, another place will also be burned. "

Qin Murong said with a smile: "so we need to use earth covering. The so-called earth covering is to apply a layer on the blade. This kind of thing needs three characteristics. The first characteristic is that it is evenly heated. If it is uneven, the blade temperature is different. Even if it doesn't crack in the furnace, it can't be kept during quenching. The second characteristic is to isolate temperature. If it is impossible to isolate temperature, what are you doing with it? The third characteristic is that it doesn't react with metal! Many kinds of things will react with metal at high temperature, or melt, or change, which is not worth the loss. Anything that can meet these three conditions is OK, but what we can use now is earth, isn't it? So it's called covering earth. If there are other things that can replace it, such as gold and silver, it's called covering gold and silver. It's not so mysterious. "

"Oh, oh..."

Iron old man feels like he can't keep up.

Now he is like a student, listening to a learned teacher.

He blinked a little, as if to miss a lot of important content, but also anxious, but also helpless, but also desperate.

"Well It seems that this kind of soil is hard to find

"Yes

Qin Murong sighed and said, "don't I just find it? I've been looking for several, but it doesn't seem to work. "

"Oh..."

iron old man quickly rose and started looking for it nearby, and even directly shovel it out.

The icekeeper is also curious and likes to join in the fun. Now he comes to help, including the rest of the apprentices who pull the bellows. There are four people in total. They dig left and right in front of the door. Every time they find a strange kind of soil, they rush to ask Qin Murong.

The so-called "many people have great power", and the power of these people is really great. For them, digging three feet is just a blink of an eye.

So they eventually found a kind of mud, black mud, with fine texture, no strange metal composition, strong adhesion, and after combustion test, it's really not conductive.

Qin Murong was overjoyed. After returning to the room, he found that the guy was still grinding.

The long knife had been polished, and the surface was very smooth. He seemed to want to grind it out in one go.

Qin Murong laughed, took the long knife and said, "do you like grinding? I'll grind it later. You can grind some. "

Then wash and dry the knife, and apply a layer of black mud on the body of the knife.

He didn't do that ripple.

In fact, the edge of the corrugation is not for the sake of beauty, but each corrugation should correspond to a forging joint, that is, it should be determined according to the grain of the metal.

In other words, the core purpose of covering soil is to separate the boundary of metal strength. Where this line is, the covering soil is!

So there is a rumor in the previous life that whether a knife is good or not depends on two lines.One line is the blade grain covered with soil.

The other line is the metal strength lines beside the edge lines, which is a watershed of different colors reflected by different internal structures.

And the more parallel and even the two lines are, the better the knife is and the more outstanding the craftsmanship is!

It's the symbol of the master that the knife has double lines!

However, the iron is well burnt and the alloy is well blended. Qin Murong's hammer is heavy and stable. Naturally, the line is straight.

So covering soil is a simple straight line, as long as you pay attention to the surface evenly.

Done, then carefully carried Shun into the fire, and then said with a smile: "also in accordance with the method just to burn."

"All right!"

The two apprentices rushed to pull the bellows, and the flames roared, gradually drowning the blade.

Qin Murong returned to his seat, drank tea and squinted at the fire.

It wasn't until half an hour later that he stretched, went over and took out the blade, and then quenched it again.

In addition to that time just now, it has been quenched twice!

Quenching this kind of thing, generally only once.

The reason for using it twice is that the refined iron is really good!

The possibility of deformation of internal structure is much higher than that of previous metal.

After quenching, Qin Murong scraped off the dirt on the surface with a file, then threw it to the apprentice and said, "now you can grind it. It's the kind that can be used as a mirror."

"Ah? How can we make a mirror

Qin Murong, with a smile, said, "you just grind it to the most meticulous. When you can't grind it any more, call me again. I'll go to sleep first."

It's been a long time. It's already afternoon. It's supposed to take seven or eight hours to finish the sharpening, but the apprentice's skill is really good. His hands are stable and tough, and he has strength. It can be finished in one hour at most.

Taking advantage of this, Qin Murong found a piece of leather in the room, cut it to the size of a palm, then took out a small bottle from his belt, carefully poured out some bright powder, and then poured out a kind of viscous object from another bottle, mixed the powder with that kind of viscous, and evenly smeared it in the middle of the leather.

After finishing, he was relieved and lay down on the temporary bed beside him. He said, "I'll have a rest first. Call me when the grinding is finished."

Iron old man still has a lot of questions to ask, at this time grasp heart scratch liver, but hard to say what, can only falter nodded.

Instead, the icekeeper's eyes brightened, and he pulled the old iron man aside and said with a small smile, "old iron, I seem to remember something."

"What's the matter?"

"You still owe me a long knife, don't you?"

"You What are you doing? "

Old iron man is full of vigilance.

The ice keeper said with a smile: "you said that. I can choose the long sword here. I don't have time for this period of time? So I've delayed it. Now I happen to run into you. You can't hide any more, can you? Last time you used to pit me with Fengyu Dao. When I got the news, the girl had already taken the Dao out. It was thousands of miles away! Today Hey, hey, I'll take this one! "

Iron old man instant rage, almost up to strangle him.

But I really can't.

He held back his anger and said, "this sword was forged by the Lord himself. Do you want to take it away? I want to take it! Is it possible? Is it possible? It's not dark yet. What's your dream? "

"There is always There's always a discussion. The Baron is not bad at anything. People must be bored. It's possible to come here to pass the time and play. If you get a long knife, you can lose it

"How can it be?"

"Tut, don't get excited. Let's talk about it like this. If, I mean, if the Baron just leaves the sword here and doesn't want it, then give it to me. If the Baron takes the knife away, then we don't want it. How about that?"

"You

"How are you? As you have said, Sir Alex will not let go, and you will not suffer losses inside and outside. If Sir Alex does not want it, I will get it, but you will not lose, will you? So inside and out, you're the most cost-effective. "

"No way!"

"I'll give way one more step. If Sir Alex doesn't leave the knife How about we write off the account? Don't forget that you owe me this knife, but I brought it to you with my head. You can't be ungrateful. "

"You..."

The old iron man bit his teeth and said, "OK, that's settled!"

Indeed, they owe each other.

In fact, he was going to give the knife to him. Who knows that the big girl suddenly came back and happened to take a fancy to it. Naturally, she took it away. The old iron man did not dare to disobey.Two people made a black box deal, one sad and the other smiling, and they went back to the room and waited quietly.

For a moment, the only thing in the room was the flame and the sound of sharpening the knife. It was like a rhythm, and it didn't feel like noise.

Most of the time passed quickly.

The sound of sharpening disappeared.

But no one came to sharpen the knife.

Two people are curious, walk over to have a look, discover each other is looking at long knife to be in a daze.

"What's the matter with you?"

Asked the old iron man in a deep voice.

The sharpener opened his mouth, then pointed to the long knife and said, "I I'm sure it's not worn wrong or damaged, but it's But there are two lines on it, which can't be touched yet... "

"Huh?"

The old iron man was startled and quickly went to pick up the long knife and put it in his hand to check.

This one sees, then startled.

He was speechless.

After a while, he said, "it's not that you are worn out, it should be like this, because if it's bad Not so beautiful! "

The icekeeper next to him also took a look, which made his eyes unable to move.

"That's it, that's it! My God, all over the sky, Buddha and God, we must let the Lord abandon this sword. I'm willing to trade it for ten years. Please, please

The old iron man rolled his eyes and said in a cold voice, "a killer, what are you doing?"

Then he took out the white silk cloth, held the long knife, walked to Qin Murong carefully, and said in a soft voice: "Sir, sir, wake up, wake up."

Qin Murong smashed his mouth, sat up, rubbed his eyes, and then said, "finished?"

"It's just There are some small dots on the blade and And these two fine lines. What's going on? Should It's not a mistake, is it? "

"Grain? Two? Are you sure it's two? "

"Two, you see!"

Qin Murong immediately took the sword and looked at it. Then he laughed and said, "he's like Laozi. Laozi is really gifted! Ha ha ha, this is the first time to play, even playing out of the master realm! Good, good. "

"Jue Sir, are these two good things? "

"That's a good thing, of course! Er Don't you think it looks good? "

"Good looking, that's really good looking!"

"That's all right?"

Qin Murong laughed, then took a long knife to the table, picked up the leather, and muttered: "it's just the last process. I'll come myself Oh, the sharpener! Come and have a look. "

The sharpener came up quickly, but he was almost glared back by the old iron man.

According to old tie's idea, Qin Murong's unique skills can only be seen and learned by himself. His apprentices don't have the qualification!

"What are you doing up here?"

Old iron man's voice is so fierce that he's going to hit people.

The grindstone whispered in fear: "sir My Lord asked me to come here... "

"All right, all right!"

Qin Murong rolled his eyes and said, "who are you, old man? I'm a skilled person who doesn't have any privacy. You should protect me well. OK, let him come and have a look. This process is called polishing. As for the raw materials, you can only buy them at a high price from the Qin chamber of Commerce. I think you'll be reluctant to use them in the future. "

Old iron let the apprentice come here.

Qin Murong Yang said with his leather: "the top is coated with the finest diamond powder. The paste on it is the most tenacious hot-melt paste. In addition to this fairly good leather, the combination of the three is a polishing tool. Not only weapons and metal utensils, but also many things can be polished with it. You can grind your knife well. Some of your skills are very good You should have seen it. "

With that, Qin Murong put the leather on the blade, and then ground it back and forth.

When the paste was applied to the blade, it naturally took a piece.

In other people's eyes, it's like spitting on a beautiful girl's face, so bo tim tin mat.

Even want to die.

Qin Murong ignored it and continued to grind it. Back and forth, his movements were a little rough.

That's just Crazy spitting, fancy spitting!

Vomit, no, grind about a jiongxiang Kung Fu, leather and that kind of cream has become black, and the long knife is black.

Qin Murong threw the leather directly to the sharpener and said, "this thing can be used several times. I'll give it to you."

With that, he picked up a piece of silk cloth and wiped it on the long knife.

And now

In people's eyes, it can be called a miracle!

With his friction, a light on the blade suddenly flashed out. It was a kind of soft light. It looked a little black, but it was bright. It reflected everyone's appearance on itmirror!

A mirror clearer than the best copper mirror!

With the soft curve of the edge of the long knife, the whole knife looks more like God! Awe inspiring and inviolable.

All clean, Qin Murong waving a few, very satisfied.

But just these simple actions made everyone's heart be directly raised to their throat, for fear that he would bump the knife and break it!

Now go to see the knife

The blade is dark and light, and two slightly curved lines move with the light, and there are tiny black spots on them to embellish them.

The blade is more translucent against the fire. The black spots are like stars in the night sky at the same time. The two lines are better like the top of clouds. The difference between the top and the bottom separates the heaven and the earth

Qin Murong narrowed his eyes and muttered: "a hundred forged tempered jade, the frost rises, and the night is full of emptiness. I ask you where to go This Dao is called night sky. How is it

Turning to look at the crowd, they could only nod and could not speak for a long time.

The iron old man was the first to react, and the first thing he did was to grab the leather in the apprentice's hand directly into his arms. Then he yelled in the other party's stunned eyes: "you can only use this thing when you are a apprentice!"

Qin Murong laughed, then turned his mouth, threw the long knife on the table, shrugged and said, "I'm tired."

Everyone looked at the night sky knife, which was just like a piece of grass that had been abandoned at will. Then they looked up at Qin Murong who was shaking out of the room. They were all confused. They didn't know what he was doing.

It's just The knife's gone, the man's gone.

So natural and unrestrained.

Although I don't understand, I seem to understand something in my heart.

Old iron man pondered for a long time, then sighed: "this He is the richest man in the world. He has lived most of his life, but it's hard to understand... "

The icekeeper next to him blinked, then screamed, took the long knife up and put it in his arms. Then he laughed a few times, and the voice line trembled and roared: "mine! It's really mine

Iron old man is the corner of his eyes suddenly shrunk, Putong a sitting next to the seat, dull eyes grow up, for a long time speechless.

At the same time, Qin Murong found his way back to fengxiao's house. Before he came in, fengxiao peed and said in a cold voice, "do you know how to come back?"

Qin Murong is a smile, suddenly rushed into the door, a wind small embrace in his arms, a turn to lie on the bed.

"What are you doing?"

Feng Xiaoxiao is furious.

Qin Murong could not hear it. He looked up and saw that the curtain had been put on the window. He grinned and said, "I'm old husband and wife. What's the trouble? You kick me down and I climb up at night. Why bother? "

The wind is small Leng for a while, murmur a way: "seem to also be......"

"Right?"

"Yes, fart!"

Then, with a bang, Qin Murong was kicked out of the house.

Of course, early the next morning, Feng Xiaoxiao was still desperate to find that Qin Murong's Octopus was on his body, and his clothes Sure enough, it was messy.