Material Empire
Chapter 3 Teach You What Quenching Is
The so-called quenching is a process in the processing of metal materials. Simply put, the metal workpiece is heated to an appropriate temperature and maintained for a period of time, and then immersed in a quenching medium for rapid cooling. After forging all kinds of ironware in folk blacksmith shops, the red ironware should be quickly immersed in water to cool it down. This is a way of quenching.
Processing processes such as quenching and tempering, annealing, and normalizing, collectively referred to as heat treatment processes, are important means for improving material properties. Through precise control of the medium, temperature, time and other factors in the heat treatment process, the toughness, strength, hardness, wear resistance, fatigue strength, etc. of the material can meet the specified requirements. The knowledge in this can be described as unfathomable.
As a material expert, Qin Hai has an in-depth understanding of heat treatment processes. He just took a look at the farm tools made by Fatty and the others, and he knew that they had not been quenched. No. 65 manganese steel is a steel with excellent toughness and wear resistance, but if it is not properly quenched after processing, the steel will be soft, resulting in the current phenomenon of edge curling.
Fatty and the others are all apprentices with half a load of water, and they don't know much about processing technology. They even couldn't respond to the word quenching that Qin Hai said. According to the interpretation of the dictionary, the word queen for quenching should be pronounced as brittle, but in the heat treatment profession, people are accustomed to pronounce it as the sound of war, which is from the northern folk tradition of dipping fire. This word is derived from it.
You're talking about... brittle fire, right? The short man among the three young men asked tentatively.
Well, you can read it this way too. Qin Hai compromised, and now is not the time to popularize terminology, as long as the other party understands what he means.
We...couldn't find water at the time. The short man replied in an inaudible voice. As an apprentice, he has seen pigs run before eating pork. He has seen the process of quenching, but he doesn't know what it does. When making these agricultural tools, perhaps as he said, because there is no convenient cooling water nearby, this process was skipped.
What? You sold your ironware without even quenching it. This is not considered a fake or inferior commodity! Several peasants were confused and shouted together. Although they don't know much about industry, they have at least seen blacksmiths forging iron, know about quenching, and know that iron tools that have not been quenched are not good for use.
return the goods!
Money back!
Let them lose money!
Several farmers shouted outrightly, waiting for Qin Hai to claim justice for them.
How, what do you guys think? Qin Hai looked at the three young men and asked.
The fat man's tone was a bit soft, and he muttered: They just want to blackmail us, we use good steel...Even if it's not quenched, the steel is always good steel...Such good steel is 50 cents cheaper than a blacksmith's shop... ...
He talked to himself, but the meaning revealed was very clear, that is, he was unwilling to refund the money. The five farmers bought seven or eight pieces of agricultural equipment from them, worth more than ten yuan. If they returned all of them, they probably wouldn't be able to get them back.
Qin Hai saw the fat man's embarrassment, and he turned around again, and said to the farmers, Everyone, can I propose a plan?
Speak. Several farmers said.
Qin Haidao: Since you have bought the farm tools of these brothers, they must be useful at home. The steel used for these farm tools is indeed good steel, but there is one less process in the processing. If you want, I will let you These brothers put these farm tools back into the furnace and added the quenching process. I guarantee that after the restoration, the quality of these farm tools will be better than those you have used in the past, what do you think?
Hey, do you know what quenching is? We don't know this. The fat man pulled Qin Hai's lapel behind his back, for fear that Qin Hai's words would fool them all.
Qin Hai glared at the fat man with a look of hatred for iron and steel, and said: Since I dare to agree, I am sure... But, you have to help me find a blacksmith shop and some quenching medium, I will tell you later .”
After a while, the farmers had exchanged their opinions briefly, probably because they felt that it would be fruitless to entangle with Fatty and others, and they really needed these farm tools, so they nodded and said to Qin Hai: Look at you For the sake of this young man, as long as they can repair these farm tools and ensure that they don't curl their blades, we won't return them.
Who can guarantee that you won't be able to curl your blade! The tall young man said inappropriately, You can use a shovel as a trowel to split bricks, and you can't curl your blade?
If the tempering is done well, it is true that the blade can not be curled. Qin Hai replied with a smile.
Okay, just for you young man, if you say that this shovel will not be able to cut bricks after quenching, I will buy all the farm tools on this stall! In his heart, he also felt that Qin Hai's words were a little exaggerated, but at this moment, if he stood up for Qin Hai, he could force the three young people to nowhere. Of course, he liked such a thing.
You said it yourself? Okay, buddy, tell me, how do we quench it? The fat man's blood was aroused by the farmer, and he suddenly had a wish, that is, he hoped that Qin Hai could really deal with these farm tools. In this way, you can use the words of the farmer to force him to buy the rest of the farm tools. This is not just a matter of how much money you can make, but it is also a matter of getting rid of the face you just lost. earn back.
Qin Hai looked at both sides, shook his head helplessly, and then said to the three young men: To quench the fire, you need a furnace first... You all belong to the factory, right? Should you go back to your factory or find a blacksmith's shop? , what do you say?
Let's find a blacksmith shop, said the short man. It is their private job to sell farm tools to make money, and it is best not to involve this kind of thing in the factory.
Not far from there is Zhang Laosan's blacksmith shop. I know him well, so I can take you there. The leading farmer pointed in a direction and said.
That's good. Qin Hai nodded, and said to the young people: There is one more thing that I need you to look for. I need to prepare some quenching solution, and I need to use several chemicals. These drugs may only be available in middle school. It can only be found in the laboratory, who is related to you?
I... The short man raised his hand and replied, My uncle is from the county...
Okay, the medicines I need are **, sub**, and **. I will write down the names and quantities for you. You can go to your uncle right away to get these medicines and send them to Mr. Zhang's blacksmith shop. Go. Qin Hai took out a pen and paper from his satchel, wrote a few names, and handed it to the short man.
Up to now, the few young people can only obey their orders, and they also hope that Qin Hai can create a miracle for them and reverse their passivity. The short man took the note from Qin Hai, spread his short legs, and ran towards the county.
After dismissing the short man, Qin Hai gave a greeting, and the rest of the people carried the farm tools on the stall, led by the leading farmer, to a blacksmith's shop in a row of bungalows, outside the door of the blacksmith's shop, hanging A sign with the words Zhang Laosan really written on it.
Third brother, I have something to disturb you. The leading farmer shouted.
Banggu, what are you here to buy again?...Well, why are there so many people? Zhang Laosan came out from the house to welcome so many people standing outside the door, and each of them was holding some farm tools. I couldn't help but froze for a moment.
The farmer named Mangu went up and told what had happened in a few words. Zhang Laosan took the rolled-edged shovel from Mangu's hand, looked at the blade, and said, Well, it's indeed a good piece of steel, but it's a pity...but even if it's quenched again, it can be used to split bricks. It’s also bragging.”
Master Zhang, are you bragging? Can you let me try it first. Such a good steel, if it is quenched well, it should be no problem to split ordinary red bricks. Qin Hai said forward.
Zhang Laosan looked Qin Hai up and down, and said, You are the young man who knows how to quench? Where did you learn it?
Qin Haidao: I graduated from the Provincial Agricultural Machinery Technical School, and I learned a little quenching in school.
Haha. Zhang Laosan laughed, I learned it in school, okay, okay, newborn calves are not afraid of tigers, I have a complete range of stoves, anvils, and water here, so you can show me, an old blacksmith, my eyes. .”
His words were full of disdain, but his attitude was still enthusiastic. Quenching is not difficult to say, and it is not easy to say. The easy part is that it is nothing more than heating and then soaking in water. It is difficult to say it, because the heating degree has some methods, and the quenching effect is good or bad, which is reflected in the operator's judgment on the degree of heat.
According to Zhang Laosan, Qin Hai is probably a student who doesn't know the heights of the sky and the earth. He learned a little in school and wanted to show off. He believed that Qin Hai would definitely do quenching, but the effect of quenching was probably far worse than that of an old blacksmith like him. He himself couldn't handle these farm tools to the point where he could split bricks. It was just a joke for Qin Hai to achieve this effect.
Qin Hai knew that his age was a flaw, and if he wanted others to think highly of him, he could only show excellent grades. He thanked Zhang Laosan, and then walked into the blacksmith's shop with the dismantled shovel head.
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