The furnace that Su Jinli asked people to build was not particularly big in the blast furnace, and today was the first time to smelt iron, so she didn't dare to smelt too much.

Based on the experience she had heard before, she had the craftsmen put the crushed ingredients into the furnace in the optimal proportions, and then began to light the fire.

After all, Su Jinli is making iron for the first time, although it is strictly in accordance with the best formula given by the old man, the quality of iron ore is different, and the proportion of raw materials will definitely be different.

Therefore, after the real refining, the ratio may have to be slowly adjusted according to the raw materials used to achieve the optimum.

Because there are not many raw materials, the time required is relatively short.

When Su Jinli returned to the ironworks after lunch, the molten iron happened to be almost refined and flowed into the square pond below.

Su Jinli saw that the craftsmen who had prepared took willow sticks up to the low wall and began to quickly stir the molten iron in the pond.

When the craftsmen began to stir, there was an incense burner not far away, and incense was inserted into it to keep time.

This is what Su Jinli requested.

At this time, there was no clock, so I had to use the local method of burning incense to keep time.

Although there are errors in this method of timekeeping, it is better to have a time than to rely on the craftsmen's estimation.

After recording the time required to fry wrought iron, you can refer to this time later.

Of course, the number of craftsmen is also an important reference data.

These craftsmen are skilled and can use their experience to fry wrought iron.

It's just that wrought iron has a higher melting point than pig iron, so with constant stirring, the molten iron will gradually solidify, and the further it goes, the more difficult it is to stir.

When the wrought iron is almost cooked, the timekeeper will write down the time in a pencil notebook.

At this time, the wrought iron has not yet cooled, and after it is taken out of the square pond, it can be directly forged.

Su Jinli had been watching from the side, and found that the efficiency of this method was still too low.

The main reason is that it takes too long to fry mature iron, and after frying mature iron, the molten iron is solidified, and there is no way to directly cast it, but only by forging.

Fortunately, the blacksmiths were more skilled, and after forging for a while, they were made into the shape of a sickle.

Once here, it's time for the critical pig iron rinser. And the pig iron drenching mouth, also known as "rubbing." ”

Su Jinli asked people to put the made sickle in your furnace to heat, and after the sickle burned red, the molten pig iron was quickly rubbed on the edge of the sickle.

The whole process must be fast enough, otherwise it will cause uneven "rubbing" and uneven surface, which will affect the quality of the sickle.

The pig iron used for "rubbing" is the pig iron plate that was cast before.

The blacksmiths were afraid that it would not be good to rub it, so they practiced it countless times before the official "rubbing", and when the temperature of the sickle dropped slightly and it turned cherry red, it could be quenched.

During the whole process, the steward of the ironworks kept his eyes round and refused to blink.

After the quenching was completed, he almost couldn't wait to ask Su Jinli: "Mr. Su, what should you do next?" ”

Su Jinli glanced at the quenched sickle and felt that it should be about the same, so he said, "You can trim the blade." ”

When the steward heard this, he immediately urged the blacksmiths to work.

The blacksmiths are familiar with trimming and cutting, but it takes a lot of time to polish.

While they were polishing, the steward couldn't help but ask Su Jinli: "Mr. Su, can you really use the sickle that is poured out like this?" ”

This method is different from the method they used in the past!

In the past, they first beat wrought iron into half-inch-long, finger-wide pieces of wrought iron, and then tied them tightly. Put pig iron on the top, cover it with broken straw shoes stained with mud, and paint mud on the bottom of the wrought iron sheet.

These things are then melted together in a furnace, and when the pig iron melts, it will seep into the wrought iron flakes and finally be made into steel, which is called filled steel, or mass steel.

Once the steel has been forged, it can be used to make farming tools, and if it is forged repeatedly, it can also be used to make weapons!

There are also those that are directly cast into farm tools with pig iron, but pig iron is hard and brittle, and if it is directly cast into farm tools, the service life is mostly not high, and it is easy to break.

The texture of wrought iron is too soft, and if it is made into a farm tool, the edge is not sharp enough, and it is easy to curl the edge.

The steward never thought that he could do this!

The pig iron was directly melted, and the molten iron was poured on the cutting edge!

In this way, isn't it somewhat similar to the previous steel filling method, but not as troublesome as the steel filling method?

However, there should still be restrictions on this method. Most of the time you can only build some small pieces, but not large things.

Perhaps, you can try to use this method to make a sword for the soldiers below?

There are also clusters of arrows, maybe you can try it too.

The more the steward thought about it, the more excited he became, and he couldn't wait to report it now.

But he tried his best to hold back.

Not yet, why wait for the scythe to be built and see the finished product before proceeding to the next step.

He waited desperately for a while, and at last a blacksmith sharpened the sickle.

Seeing this, the steward immediately rushed over, and did not dislike the dirty body of the other party, and directly snatched the sickle.

The scythe had been fitted with a wooden handle, and because it had just been polished, it was bright in color, and the edge looked unusually sharp.

The steward thought about it, and asked people to find a piece of pork, and cut it on the pigskin with a knife.

Pigskin is relatively flexible, and if the knife is not sharp enough, it is not easy to cut.

However, as soon as the steward exerted his strength, the pigskin was immediately cut open.

He slashed several more times, and then his eyes grew hotter.

The sickle is not suitable for cutting pork, because the blade and blade are rounded, like the crescent moon, and if you cut meat, it is definitely not as good as a kitchen knife.

But the steward was still very excited.

After he had cut the meat, he hurried out again to find some weeds to cut.

There's no crop for him to test the knife right now.

Unfortunately, we didn't find half of the weeds.

The weeds in the vicinity have long been cleared.

The steward had to find a branch to test the knife, and when he found that the edge was still very sharp, he tried it lightly with his hand.

Originally, I just wanted to touch it, but who knew that if I wasn't careful, there would be a small opening on my fingertips.

Guan was stunned for a moment, and then became even more excited.

The edge is so sharp, then you can try it and see if you can use it to make a sword!

The more the steward thought about it, the more excited he became, and said to Su Jinli excitedly: "Mr. Su, the pig iron pouring method you said is really good!" If it is reported to Your Majesty, Your Majesty will definitely be rewarded! ”

After finishing speaking, he suddenly realized that something was wrong, why didn't this Mr. Su's face look good?

He hesitated: "Mr. Su, you are ......?"

Su Jinli was actually very dissatisfied and felt that the efficiency was still too low.

Looks like she's going to have to try something else.

vertex