Zhang Guoan, the owner of the island, has been pondering the map of East Asia. Pen % fun % Pavilion www.biquge.info

Ryugu Island, Sangnam Island, Zhongshan Island, Baksan Island, Goryeo area...... It's a beautiful chain and a route that can be frog-jumped.

How about locking up the foreign trade ties of the northern Tatar bandit group?!

Let it become a bandit syndicate that can only develop internally...... They can only grow weaker and weaker...... Exchanges on land, in this time and space, are too costly.

The most important thing is that this blockade is beneficial to him, and he can take the opportunity to build a large-scale naval army and cultivate many naval talents!

So what are the benefits for your own development?

Zhang Guoan's owner can obtain agricultural livestock, can build his own breeding base, and can also expand his influence on the whole of East Asia, so there are only benefits, no harm.

For the current material resources, he can finally expand and develop again...... The entire Badaohe region is now approaching its second autumn harvest.

This autumn harvest has brought joy to the people of the whole region, and the tall granaries they have built in the form of barrels are likely to be full...... As long as the grain is sufficient, Zhang Guoan can concentrate on the development of other industries, and his dependence on the Great Song Dynasty will be further reduced.

Director Hu Zhenbei and his craftsmen finally built their own steel-making earthen furnace.

Zhang Guoan, the owner of the island, lamented the wisdom of the craftsmen of the Great Song Dynasty

The duplex bellows they use are the same as the bellows they used when they were young, but the volume is much larger, which greatly improves the efficiency of air blowing.

The bellows is used to open and close the wooden box cover to blow air, there is a flap on the cover, and there is also a flap at the junction of the wooden box and the air duct, one is the air inlet, the other is the air outlet, and the cover plate is fanned. The two flaps open and close alternately.

If two wooden fans are used alternately at the same time, continuous air blasting can be done. This kind of wooden bellows is large in size and reasonable in structure, so the air volume and wind pressure are significantly high, so that the iron smelting process can be strengthened, and more importantly, it can be driven by waterwheels.

The craftsmen of the Great Song Dynasty now use two methods to make steel.

One is the 100-steel method, which is hammered by repeatedly heating wrought iron. A steelmaking process that allows carbon to gradually infiltrate.

This method is time-consuming, labor-intensive, and extremely inefficient.

The Badaohe area now uses the steel filling process, the method is very simple, that is, after the pig iron is smelted, wrought iron is added to it, in case the carbon content ratio is appropriate, it can be smelted out of a furnace of "earth-shattering, crying ghosts and gods" good iron!

This requires master craftsman experience, but more. Luck is required.

Let's put it this way, before the invention of the melt steelmaking method, this semi-fluid steelmaking method was the fastest and simplest, and the production efficiency was greatly higher than that of 100 steelmaking.

The iron-making furnace here is a cupola, and it is relatively easy to put into the work of processing cast iron and copper very early.

It took a lot of work to make the furnace, and in the end they built a furnace with a foundation of two and a half meters in diameter and a furnace six meters high.

The outer part is conical, and the circumference of the bottom of the furnace is smaller than that of the belly. Gradually reduced from the belly to the roof, the furnace body is made of large red sandstone, the inside is coated with refractory clay, and the clay tongs are cooked.

Hu Zhenbei, the director of the factory, said triumphantly: "If it goes well, ten stones of good iron can be produced in one day and night...... Think about it, if you build ten, you can ensure that my Badaohe area is enough......"

Zhang Guoan, the owner of the island, could only smile encouragingly. He personally tried it, and the quality of the so-called good iron in this era varied greatly from the level of each furnace.

Since the Northern Song Dynasty, coal has been used to smelt iron in the northern region. Due to the high sulfur content in coal, the iron and sulfur content of the smelted increases. Dryness, reduced metal ductility and toughness.

Therefore, in the Southern Song Dynasty, coke was used to make iron, and the quality was significantly higher than that of the north, and the output was higher than the total in Europe in the eighteenth century.

However, if you can still be defeated by the Tatar bandit group in this way, it can be seen that what is the use of steel production being the first in the earth's output?

Steel is the state, it's a pseudo-concept!

Zhang Guoan knew that at this time, the craftsmen of the Great Song Dynasty could also make steel equivalent to modern ordinary household steel, such as those swords that sharpened iron like clay.

But it's just "can" be made: it takes decades to build, just in time to get all kinds of alloys and meteorites, and it just so happens that as recorded by ancient swords in history, material A was produced by landslides and material B from meteorites...... After a few more decades, congratulations, you've created a sword that is as tough, sharp, and rust-resistant as modern alloy steel kitchen knives!

So there is only one sword of the kind of Yue Wang Goujian...... For personal use only.

The only thing that Zhang Guoan could help Hu Zhenbei, the factory director, was to teach them the Suzhou Iron and Steel method of steelmaking.

When the furnace temperature rises, the wrought iron begins to melt, and then the pig iron plate begins to melt, and then the pig iron plate begins to melt, immediately clamp the pig iron plate with a long tongs to move left and right, and constantly turn all the melted iron, so that the iron can be evenly poured into the pig iron liquid.

In this way, it can not only produce a good carburizing effect, but also produce a violent oxidation effect, so that the iron and slag are separated, and the steel with less slag and uniform composition can be produced.

In fact, until a long time later, many village-level blast furnaces still used this method......

Hu Zhenbei, the director of the factory, snorted: "How much do you know about this industry? ”

This really makes him feel a little sad to call himself a master craftsman......

As a result, as soon as he experimented, this method was indeed better than the previous method, and the probability of refining good iron immediately increased, and he immediately listed this as a method that could not be passed on, and carefully selected a few young people as his apprentices...... In fact, he has only used this method once more than others.

In addition to the pig iron imported from the Great Song Dynasty, their riverbed iron sand also increased production, especially after using a large number of prisoners, this kind of labor-intensive work is more suitable for care, they also know that this is a big island, there are no sea boats, they have no way to escape, and the life security here is still good.

The advantage of riverbed iron sand is that the amount of iron is high, some can reach seventy, and the quality is good, with the words of Hu Zhenbei plant, it can be directly used to make steel.

The natives of Liuqiu Island generally select those high-grade iron sands to make their few iron tools.

Zhang Guoan Island Master calculated, in terms of the main raw materials, he still can't do without the Great Song Dynasty.

For example, cotton is needed from the beginning of the year to the end of the year.

A 50-centimeter-wide piece of cotton cloth weighs three and a half pounds...... Zhang Guoan's water-powered spinning machine and manpower Jenny machine can spin 2,000 catties of yarn in a day and night, which is not counting twine, not counting the needs of ******, so he wants as much cotton as he wants.

Fortunately, the other side of his strait is one of the main producing areas of cotton at this time, and it can still supply his raw material demand for the time being, and with the increase of his demand, the number of cotton farmers who grow cotton has also increased, forming a good interactive development.

When the two of them discussed the Jeju Island plan, Jing Jing smiled and said: "As long as you don't lead the team yourself, I support you, by the way, if there are suffering Korean women, bring back more, but people are willing to ...... I'll ask Park Jin-hye to help recruit workers. ”

Park Jinhui just said that her surname is Park, and her name is given quietly...... She was smart and good at taking care of water-powered spinning machines, and was quietly appointed as the director of the water-powered spinning mill...... (To be continued.) )