Everyone was kicked out, and the old problems of the craftsmen were still cherished. The old fisherman only left a sledgehammer for him to fight, and Li Xiao, as the chief scoop of Phi Dao, could have the honor to watch.

This is a choice that is afraid of Li Xiao's status in Phi Dao, as for Ao Canghai Mangui and Zhao Tiezhu, who wants to come in the most, they were all driven outside and waited.

The fisherman asked Li Xiao to get a basket of eggs, picked up a dozen eggs and broke them. Carefully get out the egg yolks, which are sprinkled into the fiery molten iron.

Phi Dao can be used to make coke of very good quality, and hot metal can be easily obtained at very high furnace temperatures.

After adding the egg yolk, the fisherman kept stirring it with an iron rod. It won't stop until the molten iron inside turns into a blue fire!

Li Xiao didn't understand why he added egg yolk to the molten iron at first. It's not fucking egg soup! But after thinking about it, Li Xiao's eyes lit up.

Egg yolk contains a lot of phosphorus, and the fisherman does this to get phosphorus steel. Phosphorus steel can significantly improve the strength and hardness of the steel, but if more steel plasticity and toughness are significantly reduced, especially the lower the temperature, the greater the impact on the plasticity and toughness. Phosphorus significantly increases the brittle transition temperature of the steel and additionally reduces the weldability of the steel.

Therefore, the ratio of phosphorus is very strict.

In ancient times, many swordsmiths used bones to add phosphorus steel in the hope of obtaining iron swords with higher hardness. However, the addition of bones is not easy to control, and Yu Lao is very smart in doing so. The phosphorus content of egg yolk is relatively stable, and the amount is better controlled than that of bones.

But how does he know that the yolk contains phosphorus?

Li Xiao no longer dared to underestimate the local methods of the working people, and some of them were very useful. For example, if egg yolk is added to molten iron now, I don't know how many generations have summed up the crystallization of this amount.

After getting the phosphorus steel, the old man began to pour molten iron into the model. In order to facilitate mass production, many of the places where the bolt receiver is located are castings.

While waiting for the molten iron to cool down, the old fisherman looked for Li Xiao and started chatting without four or six. Li Xiao glanced out of the corner of his eye that a sledgehammer was pouring large grains of salt into a bucket of water. He also holds a stick and stirs it constantly to dissolve the salt quickly.

After the molten iron was cool, the old fisherman opened the pottery fan and took out the casting inside.

The fittings are reheated, and after heating, the fisherman clips them out of the stove. Putting it into the wooden barrel next to it, I heard a "Zla" sound, and a white mist steamed up.

This is the legendary quenching process, and the fisherman uses salt water to quench. It will further improve the hardness of the steel, although theoretically the things that Yu Lao made still belong to the category of low carbon steel. However, this kind of steel casting with phosphorus has been quenched by salt water.

The hardness and strength of the casting are far from being comparable to the strip steel that Yunhao has made.

"You try this thing, if it doesn't work, you smash the old man's signboard." For his own craftsmanship, Yu Lao is very confident.

But it's not good at all, craftsmen are always willing to hide their secrets. If Li Xiao is not the chief scoop of Phi Dao, and the fisherman despises Li Xiao very much. I feel that even if I let Li Xiao look at it casually, I can't see a way down at one time.

Sometimes these craftsmen are very much like children, and they think that the sledgehammer is very hidden. The sledgehammer takes so much salt at once, will no one see it?

If you don't see it through, the craftsman will rely on this craft to eat. Self-cherishing is also a common vice among craftsmen in these years. Even if the apprentice has done a lifetime of work for the master, the master only teaches his apprentice his unique work when he is dying

Although these things are all old fishermen, or the local methods found by his predecessors craftsmen. But there is really the support of chemical principles, which makes Li Xiao have to admire these traditional craftsmen again.

The sledgehammer worked very hard to polish the burrs on the casting, and it took a while to polish the casting.

Early the next morning, the old fisherman threw the polished casting to Yuna Inatomi. For this old devil, the old fisherman has never had a good face. If it weren't for the old guy's age, maybe he would have beaten him.

Inatomi Yuzhi looked at the casting in his hand very carefully, and looked at the sunlight for a long time, then nodded with satisfaction.

Li Xiao didn't understand how the old devil was identified, he was looking at sunlight and not X-rays. But judging from the old devil's expression, he was really happy.

The old devil very seriously installed the casting on the arquebus with his own hands, and this time he learned his lesson. No one dared to shoot with an arquebus, and neither did the whirring Ao Canghai.

The arquebus was once again tied to the iron frame, and the sledgehammer and Zhao Tiezhu all came out to see. Yesterday, Zhao Tiezhu was still not convinced by the old fisherman, after all, before the arrival of the old fisherman, he was the head blacksmith on the island.

If the big boss wants to make good things, he has to go through him.

Now there are competitors, although the other party is older. But the craftsman recognizes the craft, not the age.

"How much is appropriate?" Ao Canghai suddenly became clever and asked Li Xiao a word before filling the gunpowder.

"Like yesterday, I'm going to see if this part will be blown apart." Li Xiao thought about it for a while, and was still going to use yesterday's charge.

This is also very fair to Zhao Tiezhu.

"Good!" Ao Canghai listened to Li Xiao's and loaded a round according to yesterday's charge. After stuffing the projectile, he lit the fire rope and turned around and ran.

"Smack!" There was a crisp sound of gunfire, and the iron frame holding the arquebus jumped on the spot. The projectile pierced the target almost two hundred meters away, and then shot at the stone and sent up a puff of white smoke.

Li Xiao frowned, if this kind of recoil comes to such a shot, this person is basically useless. Could it be said that learning from the Russians, one hair on the left shoulder, and one hair on the shoulder? And then people have to go down and rest for a week?

However, the benefits of the charge are also obvious, with stronger thrust, the trajectory of the bullet is straighter, and the bullet is almost a straight line after the chamber is discharged. The target 200 meters away was aimed at in advance, and it was penetrated without any mistakes.

After the smoke cleared, Li Xiao walked to the gun and examined it carefully. found that the receiver was not damaged at all, and I had to admire the old fisherman. Such a major technical problem, his old man seems to be able to solve it with one hand.

"How?" The old fisherman said with a smug face.

"Uh......!" Zhao Tiezhu was speechless, he didn't expect that in one night, people would solve the technical problems that he couldn't solve.

"Your old skills are strong, and the kid is willing to bow down." Zhao Tiezhu was very single, and he hugged his fist at the fisherman and saluted.

Craftsmen do not respect people, but people's craftsmanship. Whether it is Zhao Tiezhu or the old fisherman, they all respect this traditional rule very much.

"Try a few more shots, all with the same charge. See how many shots you have to make before you can break the gun. Li Xiao saw that the test shot was successful, and hurriedly ordered the limit test to be carried out.

This kind of extreme test is very necessary, how many shots can be broken by the guy in his hand, Li Xiao must know in his heart. Although Yu Lao has improved the forging process and quenching process, Li Xiao still has no bottom about the manufacturing level of these years.

"Big brother! The fifth master is back, saying that he has something urgent to see you! ”

Li Xiao was about to continue watching the next test launch, but was mysteriously called aside by Li Xiu.