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The ironmith shop is in a coal fire furnace. It is Zhengwang. It is clear that Zhang Lao San is also taking the iron, hearing their voice is put down the lives in his hand.

Qin Hai is a wide range of people. In order to dig the traditional folk material processing technology, he has went to the blacksmith shop for a few days, so it is some understanding of the tools and rules in the blacksmith shop.

He picked up a tongue from the ground, holding the piece of iron that needs to be repaired into the fire, and started to calcine.

"Buddy, do you really quench?"

When I didn't know when I was drilled, I asked in Qinhai whispered.

It is the weather in the summer, the temperature in the blacksmith shop is more than 78 degrees higher than the outside, and it is simply in the steamer.

Qin Sea has been in this house. It has already felt that it is unbearable. The fat man is the most fear of hot people. It actually drilled in, and the warm-up of the whole body was flowing like a rain, and it was visible to how to pay attention to this.

"Will I fight iron, brother?"

The Qinhai did not answer the fat man, but asked a question.

"I am a forging.

Fat sly, "these farms are all I played.

"That is too good.

Qin Haidao, "The iron shovel, you need to re-forging, this matter will be handed over."

"……Ok.

The fat man nodded, people can help quench it is already a big life, can't you still let people go to the big hammer? Qin Hai heated the shovel to a certain temperature, clampped with the flaps and put it on the anvil.

The fat man also poured a brush, and lifted the big hammer, and was forged on the shovel.

Because it is only to repair the curled edge, the workload of the forging is not big, the fat man will raise a hammer, and Qin Hai will call him.

"Okay, can you quench?"

The fat man pointed to the side of the water and said to Qin Hai.

"Not busy.

Qin Hai swayed, put the head that had just been forged and sent back to the stove, reheating.

His eyes are tightly staring at the color of the shovel through the fire, waiting for its heating to the expected temperature.

"What are you waiting for?"

The fat man see the Qinhai looks serious, and the heart is not so awkward, and asked whispered.

"Heat treatment is not that simple, first heat the metal to the AC3, that is, let the free ferrite turn completely into the temperature of the austenite, producing solid solution reunion, then take out slow cooling in the air, so that the grain is fine The distribution of chemicals and carbide is uniform ... "

Qin Hai whispered to the fat man to introduce the introduction of heat treatment.

"This ... too much trouble."

The fat man directly rejected the postgrass of the Academy of Ph.D., what austenitated, grain and other things, it is too far away from him, he only cares about it, when can see the result after quenching.

Outside the blacksmith shop, Zhang Lao three chats with the pretty , while stealing the movement of the house.

Seeing that Qin Hai did not heat the workpiece, his face was slightly converged.

"How come, old three?"

It is quite a variety of attitude towards Zhang Laosan, and asks.

Zhang Lao three: "This little young, there is a few chapters ..."

"What about you?"

A lot of laughs, he knew that Zhang Hanyan always lived in the craftsmanship, and there is nothing like to blow itself. Now he listens to him that some of the young people, I can't help but take the opportunity to derogate him.

Zhang Lao San did not exctrue: "Compared with me, he has to wait for 20 years ... But what does he do this, I don't understand ..."

At this time, the short child who came to the chemical drug was called to breathe, and the hand was put on a bag, and several medicine bottles were installed.

"Hey, that is the way?"

The short child asked the high son outside the door, Qinhai did not report their own name to them, so he can only use "road"

To refer to the Qinhai.

The high sizes have nuts to the house with their mouths, saying: "Inside, it has already been played.

"I am late?"

The short son is somewhat depressed.

"Not too late, time is just right.

Qin Hai replied in the house, "there is no.

"

The short quarter is happy to answer the way, running so far away from this long way to find something, if you can't use it back, then it is uncomfortable.

Qin Hai has already taken the heated shovel, but it is not directly put into water, but throws it next to a bunch of furnace, let it keep the temperature.

This method is called a temper, and is one of the few processes of heat treatment.

Just now, Qin Hai said that it is necessary to quench these farm tools. In fact, it is only a popular statement. He is to do, is a comprehensive heat treatment of the workpiece, and realizes the comprehensive heat treatment of workpieces.

When the iron shot is inward, Qin Hai took a short-selling drug and began to fall toward the quench basin next to it.

Accurate weight control is obviously impossible, and Qin Hai can only with experience, estimating a suitable amount of drugs, and then pouring the water to stir mix.

"After birth, what are you doing?"

Zhang Lao San didn't know when I have entered the blacksmith shop, watching the Qinhai, I have a busy, curious.

Qin Hai returned to Zhang Lao Sanyu smiled and said: "I am equipped with fire solution, this 65 manganese steel, it needs to quench with triitrogen solution, the effect is best.

"This is the first time I heard.

Zhang Lao San is very different, "Is it necessary to use water?"

"Master Zhang heard the refueling?"

Qinhai asked.

"Film quenching ... I have heard of it.

Zhang Lao three, so-called oil quenching, it is used to use vegetable oil to use water as a quenching medium, and its quenching effect is not the same as water.

Zhang Lao San knows that there are some iron-based oil quenching effects, but because of the cost of cost, there is not much used in practice.

Qin Haidao: "I have this truth, and the oil quench is almost.

Different materials and different uses require different quenching processes, which involve different media.

I use this triitrogen solution, which is the most suitable for this steel.

"Santer ..."

Zhang Lao San was completely embedded by Qin Hai.

To say that Qin Hai is not right, he said that his head is a way; but he is right, what is the kind of nitrogen, Zhang Lao San, I have never heard of it, I don't know what this young people understand this, than yourself. How much is the old blacksmith? "You look at the effect later.

Qin Hai smiled, no longer explained these questions, the scientific principle of material heat treatment, really not a folk blacksmith can understand, of course, this does not hinder these folk blacksmiths with instinct and many years of practice, can find materials expert experts The heat treatment method of all sighs.

Qin Hai took the cooled shovel from the furnace ashes, and fed into the furnace and heated. After it was slightly red, it was taken directly into the formulated triitrogen solution.

"!"

A crisp rose, a water vapor is rising from the quench basin, and all people in the house smelled a sour, salty and unwound.

Qin Hai took the shovel in the water for more than two minutes, then clamped out, throw it on the ground, said to the fat man: "Okay, you take it to let the big uncle try the edge.

"Is it really good?"

The fat man is like, and it is also necessary to take some heat on the shovel, and use his hand to make a house.

"Okay, let's try it.

The fat man shouted for several farmers.

"All right?"

The peasant called a lot of mad, he took the iron shovel, seriously looked at it, nodded: "Hey, it looks like it is right.

Just don't know the strong ... "

"Can this shovel really smash?"

As asked a farmer next to it, this is the gas that is gambling.

"This one……"

The fat man is inadequate, he doesn't know how the brick is said, is it exaggerated in Qinhai.

It's hard to quench the fire, if a brick is cut down, it can be no face.

"Nothing, squatting.

Qin Hai also came out from the house, and he smiled and said.

It's so confident that Qin Hai is so confident, and it has created a curiosity. I want to see if this shovel is really durable as the Qinhai said.

He put the shovel on the wooden handle, then found a half-cut red brick next to it, and asked the shovel, he asked Qin Hai: "After born, your shovel can cut the brick?"

"Cut."

Qin Hai was full of confidence.

No. 65 manganese steel is a very wide application of applications. The later generation has a wide study for the heat treatment process of this steel. If such a heat treatment, if it is still put on Oolong, Qin Hai can directly wipe the neck again and again.

Barbarian or dare, he took the shovel and went back to the brick and took a few times, and looked up and looked at the blade. He saw it intact. This is awkward. a bit.

"!"

The brick should be broken into a few pieces, listening to the crumple response of the shovel, in addition to the Qinhai, all people can't help but hold their mouths, thinking in the heart, this hoe has to have A margin.

Happiness hurriedly lifted the shovel, wiped the bricks left on the head, and I couldn't help but laugh: "Haha, there is no one!"

"let me see!

"Let me see!

Several other farmers and Zhang Lao San are afraid to get together, and inspect the cutting edge of the shovel.

I saw that the place that passed the brick, only a touch of friction marks, can't see any damage or curl.

Everyone who has just used it just now, everyone can feel it, under which the impact is not damaged, and the quality of this shovel is excellent.

------------------ New book first week, update is slightly slow, update one chapter of the 3000 words a day, and strive to reply.

The second week begins to achieve two more days.

The new book is recommended, seek click, ask for collection.