Liang Chuan's technique is like making a pot of stewed noodles, but it is not. In fact, it is 'stewing steel'. This technique was called solid carburizing technology in ancient times. Stir-frying the needles over low heat is to recrystallize and anneal the iron needles.

To turn an iron needle into a steel needle, the carbon content inside the needle must be increased. This process is called carburizing process. This complex process was mastered by the working people of our country thousands of years ago. It is quite remarkable.

They also made a scientific summary of this and recorded it in books so that future generations could be honored to worship it.

Only from these historical books did Liang Chuan know that adding charcoal to pine wood and frying it in a pot can turn iron needles into steel needles!

Pine wood is added with charcoal and black bean paste and covered with a layer of soil. Pine wood and charcoal are solid carburizing agents, while black bean paste and soil are fillers. Liang Chuan doesn't understand these terms very well, but he still understands what pine wood and black bean paste are.

Just add it to the pot and stir-fry.

After stir-frying is almost done, cover the pot with a layer of soil, leaving a few needles on the surface of the soil, and the remaining needles in the pot for cooking. After the needles on the outside can be easily crushed, the needles in the pot

Even if the carbonization is completed, it can be taken out.

"Lao Fang can take out the needle from the pot and quench it."

Fang Tianding carefully took out the iron needle from the pot and put it into the water for quenching. The iron needle looked like it was not very hot, so he threw it into the water, and bursts of green smoke came out, and he made a hissing sound.

, which makes one’s heart tremble slightly.

The quenched iron needle reflected the cold light, and Liang Chuan said: "Miss Fang Wan, please try again to see how the quality of the iron is now. Is it still as bent as the needle just now?"

Fang Wan picked up a needle. This needle was the same as before. She lifted up the placket of her clothes with hesitation. The material of the placket was the same as Liang Chuan's, which was very ordinary burlap. This was also the standard for most common people.

match.

Fang Wan forcefully pierced the placket, and the needle passed through the placket casually. Fang Wan frowned, and folded the placket in half. The thickness of the placket increased several times in an instant. The steel needle pierced the placket, because

The needle has not been polished yet, and the needle head is round and blunt. Although it cannot penetrate, the needle is straight and not even bent at all!

Fang Tianding thought that Fang Wan's hand strength was too weak so he couldn't pierce it, so he picked up a needle, held it in the palm of his hand, stretched out his thumb, and tried to bend the needle with his finger strength. He believed that his hand strength was extremely strong, and on his thumb

I had already used all my strength, but I didn't expect that the needle in the palm of my hand would not move at all. It was more than ten times harder than before!

"This...this..." Fang Tianding was so surprised that he was speechless.

"It seems it was successful." Liang Chuan said with a smile.

Fang Tianding blinked his egg-sized eyes, and his mouth was so dry that he couldn't speak: "This... this... this becomes so hard after just one spoonful of it in the pot?"

"You saw it just now, it seems like this is the case." Liang Chuan said cheerfully: "Old Fang, you can try it yourself to see if this is the case."

Fang Tianding didn't really believe this evil, so he pulled out another batch of thin needles, and bent two of them before putting them in the pot. He made sure that the hardness of these needles was not high, at least they could be bent easily with just a touch of finger pressure.

What Liang Chuan did just now was simple and clear. He could understand it after just one look. It was very simple but still puzzling. Fang Tianding followed Liang Chuan's method and cooked it from beginning to end.

When he picked up the iron needle that he had fried, he was dumbfounded. After a lot of heat, the iron needle really became extremely hard. It really turned from the iron needle into the steel needle that Liang Chuan said!

"Tell me the truth, Sanlang, have you long been eyeing my shabby iron shop? Your skills must have been passed down by an expert. Why are you competing with me, an old ghost who is half dead..."

Fang Tianding was a little anxious. He had never seen or heard of these craftsmanship. How could anyone who was not an outsider know it!

Liang Chuan said speechlessly: "Master Fang, to be honest, I still don't like this mess like you. It's you who makes me like you. The craftsmanship in your hands is the most valuable thing. What's the use of this shop?"

I don’t know how to make iron. Ask your daughter what I do. I sell department stores. Which business in the store is not faster than making money by doing hard work like yours? This needle was also made as a last-minute thought.

Fa, I’ve never thought about this before, so don’t think too much about it.”

Fang Wan also hurriedly advised: "Dad, what are you thinking about? My boss is our family's benefactor. I just went to his shop."

Fang Tianding thought about it and realized that he was judging the heart of a gentleman with the heart of a villain.

"Old man, I said something wrong. Don't mind me, Sanlang. Today, old man, my eyes have been opened. There are really people who don't know how to forge but can forge objects well. It's a matter of self-taught... Oh, forget it.

It will be embarrassing to talk about this old face any more."

The method has been mastered, and the next thing is production. However, this kind of craft is a secret that is not taught, so Liang Chuan taught him step by step like an apprentice.

Fang Tianding pulled a few times and found the needles in the pot one by one. Once these needles are ready, they need to be polished so that they will be sharper and easier to use for sewing.

"What a pity." Fang Tianding suddenly said this.

Liang Chuan's heart skipped a beat when he heard this. Could it be that there was an omission in his method? He hurriedly asked: "What's wrong, Master Fang? What went wrong?"

Fang Tianding twisted a few bent needles in his hand and said with a pity on his face: "It's a pity that these needles are all money. They must have been broken when they were stir-fried."

Liang Chuan breathed a long sigh of relief and looked at the curved iron needle. Hey, why does this curved needle look like a hook?

What a blessing in disguise! Suddenly an idea flashed in Liang Chuan's mind! The same object that made him ecstatic appeared again!

Bend the needle and put a barb on it. Isn't this just a fishing hook?

I originally wanted to make a few fishing rods and go fishing by the Nanxi River every day, but after walking around the market countless times, I discovered that there were no fish hooks for sale in this era! It is impossible to fish without fish hooks, unless there is Jiang Taigong.

That kind of ability.

The reason why there are no fishhooks in this era is because they have not yet mastered the carburizing technology of iron. The iron is not hard enough and cannot be used for fishing. The fishhook is too soft and the weight of the fish may straighten it. Not only

The fish can't be caught and the hook is gone.

It’s not that people in the market are unwilling to sell, it’s just that this technology has not yet met market requirements!

"Lao Fang, you are really my blessing. You helped me think of another good thing!"

Fang Tianding murmured: "Does anyone still want Sanlang's bent needle?"

"Of course someone wants it, but it's not called a needle, it's called a fishhook!"

Fang Tianding didn't know what Liang Chuan was so happy about, but judging from Liang Chuan's appearance, he must have discovered something good with his excitement!

Liang Chuan happily continued: "Lao Fang, tell me, how many kilograms of fish can we catch with such a strong hook?"

Fang Tianding personally tried this 'fried' steel needle, and it was extremely hard. At least he couldn't break it even with a hundred kilograms of strength in his hand.

"I have never been to the sea so I don't know about the guys in the sea, but this river has been going up and down for decades. I should be able to survive fishing for dozens of kilograms of small fish and shrimps!"

The small fish and shrimps that Fang Tianding mentioned are not really small fish and shrimps. The Sun River leads to the sea, and where the salt and fresh water meet, the sea water stirs up the silt of the seabed and riverbed, bringing abundant nutrients. The small fish and shrimps here are all

It starts with just a few kilograms! In addition, these days there are no ships, no fishing equipment, and no equipment for fishing nets, electric fish, and frying fish. The fish and shrimp in the sea are growing wildly, which is not the same as the small fish and shrimp in Liang Chuan's concept.

thing.

Due to over-fishing in later generations, most of the fish that could be eaten as food were eaten by people. After Fang Tianding made a casual gesture, the length of the small fish seemed to be nearly a foot, which weighed several kilograms.

What kind of small fish and shrimp are they?

However, even if it is such a "big thing" that is one foot or even several feet long, today's fish fishing can handle it, because the hardness of the fish fishing is enough. If it is not enough, then make it thicker and use a big hook to catch big fish.

Don't be afraid of not being able to bear it.

Fishing is an interesting activity that takes time, effort and money. Don’t underestimate the cost of fishing. This hobby is no more expensive than playing with a SLR and playing with small items. The fishing rod needs to be high-performance and a complete set of equipment is required.

But it can cost a lot of money.

The key point is that fishing is a bit like psychotropic drugs. It can be addictive and difficult to quit. There are basically no recreational activities in this era. Fishing is undoubtedly a good activity that can relax people and add food to the table! Finish the game

If you have nothing to do, you can catch two fishes with a fishing pole and go home to make a pot of soup. Why not do it? Besides, a hook can be used for a long time. Liang Chuan has already made a plan in his mind. This business is also profitable and a good business without worrying about sales.

ah!

"Lao Fang, I think you need to recruit a few workers in this shop so that our production can increase. We can't just make so many needles in one day. It would be a waste of good skills... uh..."

Liang Chuan turned around and looked at Fang Wan, and said with a sly smile: "I don't have any arrangements for my man to recruit a younger brother. I might as well ask him to come to your shop to help. You are good at blacksmithing, but let him

The job of needle annealing and crystallization is not that difficult. If you recruit a younger brother to help you, you don't have to do everything yourself. Once you are proficient in it, you can hire a few young guys and apprentices. It won't take long for you to relax.

You can definitely make more money!”

Why do craftsmen not like to invite unrelated or unrelated outsiders to learn their craft? As the old saying goes, the apprentice will starve to death of the master. Competition is so cruel.

The two of them looked at Liang Chuan, taking this expensive craftsmanship that could be regarded as a family reception so casually, and couldn't help but respect Liang Chuan.
Chapter completed!