What to do, in fact, in Miaojiazhuang, this problem has been studied, if you add a layer of steel to the surface of iron, even a little bit of the surface of the surface, you can greatly improve the strength of the entire iron.

This is the most basic, those iron tools that have been handed down for a long time in later generations, such as what Zhang, what springs, are similar, this technology has developed to the extreme, that is, surface coating technology, which is actually another technology.

On the surface of some cheap steel or alloys, with surface coating technology, a layer of expensive, outstanding performance alloy metal is plated, so that the two are combined, that is, the material is cheap, and it maintains strong characteristics, and the coating layer can show most of the efficacy.

That is not within reach now, and even in the 21st century, it is a high-precision technology, mostly used in the military field, until it is developed to the extreme, and then slowly turned into civilian use.

The coating is high-tech, plus a layer of sharp edges, which is not difficult, the similarity of steel and iron, itself has the ability to combine together, and even explore a certain process, but also direct molding.

On top of the traditional ironware, a layer of steps is added, and the steel is made quickly, combined with the original embryo, and then through a series of means such as forging and quenching, so that they can be formed.

Zhao Xin doesn't know much about quenching, but he also knows that not only water quenching, but also water quenching will cause a large amount of stress loss, internal support loss, and the whole material is relatively brittle, losing the advantage of performance.

He didn't have time to study this, so he was able to choose between hot and cold quenching, and use a lot of other liquids, even chemical raw materials.

In fact, the research on quenching, which has been carried out in Miaojiazhuang for a long time, is quite mature, and it is only one of those schemes, oil and general solution.

This solution is a water-based quenching with a little compound added, which not only ensures the efficiency of quenching, but also does not produce the brittleness of ordinary water, and is widely used in Miaojiazhuang.

With the help of the card system, the concentration of this solution was slightly adjusted, and finally the performance was at a better level.

In general weapons, the hardness of the blade has reached 5.8, second only to the 5.9 of the divine weapon.

In fact, if in this sense, this weapon is also worthy of the name of the weapon, the strength of the weapon, from itself, and even in a certain sense, the internal performance is not large, just a support and buffer, a layer of the surface, as long as it is not damaged, no problems, it represents the whole, which is also the foundation of the coating material in later generations.

Some aviation materials, in order to pursue weight, on the surface of light polymer materials, metal coating, not only to ensure the characteristics of the material, but also to reduce the weight, this is the most concentrated place for the use of new materials.

High-strength steel combination, this is not the main body, for blacksmiths, the hardness is about 5.5, it is often able to make it, the above is luck, unless Zhao Xin monitors the whole process.

In the ordinary iron of 4.0 to 5.5, it is already a qualitative improvement, in the high, that is, subtle, Zhao Xin can not make every thing, to the extent of the magic weapon, that is not necessary, the cost is also high, in the end, the standard is set as a kitchen knife and other knives, the basic standard is 5.3, ordinary farm tools, about 5.0.

Coming to this blacksmith workshop, it has been about a few days, because of the initial run-in, refining materials, iron and steel, the efficiency of the initial 80,000 catties, increased to 220,000 catties later, although there is a huge difference with the final figure of 400,000 catties, but in 7 days, almost 1 million catties of iron and steel have been accumulated, and it is time to make real objects.

Industry, is so different, as long as he produces, there will be consumption, wages, materials, all kinds of consumables consumption, only to produce finished products, and then sell, can return the funds.

550,000 catties of iron, 450,000 catties of steel, in fact, raw materials have generated value, as long as these materials are sold, that is money, even according to 70 catties of iron and 150 catties of steel, this is also an astronomical amount, and the production of these days is enough to create a total value of 200,000 yuan.

But the payment is not small, the loss is in Miaojiazhuang, as well as the business of the famous mansion, and has accumulated enough money, in such a short period of time, the cost is as high as 70,000 yuan.

This is also the basis for Zhao Xin to stop the scale, before the product is not sold, this blacksmith workshop will be a big eater of funds.

The 20 best blacksmiths in Miaojiazhuang are the main ones, and the 200 excellent blacksmiths who have recently emerged have been freed from basic smelting and used to smelt finished products.

It is said that it is a finished product, but in fact, because of the help of melting casting and abrasives, the embryos are not built by them, and they have already been cast through abrasives.

This miracle-like result surprised everyone, take the kitchen knife as an example, they used to build the kitchen knife instead of a thousand hammers, before the kitchen knife was molded, an embryo, it takes at least half a day.

But now, in a special furnace, (in fact, a furnace like a steel-making furnace.) Ensure the sealing and layering, put the finished iron, put it into it, no need to adjust the proportion, as long as the heating is uniform, and then smelt them with fierce fire, and then inject them into the mold along the track.

At one time, it can smelt 20,000 catties of iron, and can make tens of thousands of various embryos.

The difference between industrialization and manual work is reflected here, 20,000 catties of iron, but 10 tons, converted to the density of iron, that is, a multi-cubic look, this furnace is very small, the problem of sealing and fuel is solved, just melt this, do not need a particularly unique design, the refractory and appearance is done.

Then there is no problem with the grinding tools and transmission, the sand mold is the most basic, just find someone to do it, but the quantity is a little large, when the liquid is injected into them along the height and track, when the heat dissipates, it is a successful embryo.

The embryo is only the most basic, he only needs to combine it into a shape, quenching and post-processing are not necessary, his performance is only the internal support, no matter how brittle and soft, as long as the outer layer is made with a layer of steel, everything is solved.

In the past, tens of thousands of people may have to take more than half a day to make embryos, in the workshop, only 20 people were used, plus the mold making, there were only 100 people, most of them did not need any experience, some iron smelting did not understand, as long as the strength was good, but it could be completed at one time tens of thousands, or even tens of thousands of embryos.

This kind of efficiency shocked everyone, even those who have seen in Miaojiazhuang, their knowledge is more of a magic weapon, how to say, it is also handmade, but in this way, the feat of 20,000 at one time, let alone seen it, I haven't even thought about it.

This greatly reduces the cost and increases the effectiveness, from iron or steel, into items, which requires a lot of man-hours, and the reason why the blacksmith workshop is so attractive is because of the high wages, a pound of iron is given 2 yuan, a kitchen knife such a finished product, of course, give more, which is also the fundamental reason why craftsmen with good craftsmanship flock to it.

One by one, the embryos are very rough, but no problem, Zhao Xin has already prepared abrasives and sandpaper, some large burrs, will be cut directly with harder and sharper materials, and some small ones will be sandpapered, even if this process is added, more than a hundred people, at most two hours, it will be completed.

20 embryos were sent to Zhang Xiaobao, Zhang Xiaobao still felt a little unreal, 20,000 catties of iron, just like a trick, in a morning, it became this embryo, the embryo was black and swarthy, polished very smooth, picked up, more than a pound of weight, not a fall.

As a senior blacksmith, he is very aware of the quality of ironware, this embryo, may not be compared with the fine products he created, but it is much better than the ordinary blacksmith, the structure is dense, the hardness is acceptable, the whole shape, is integrated, especially the back, compared to the blade, a little thicker, can make the whole kitchen knife even.

Sighing, Zhang Xiaobao couldn't help but continue to sigh, today's work is about to begin, what he needs is to build the prepared material steel on the blade of this kitchen knife, this step, as early as the time of Miaojiazhuang, has been completed, with a long strip of relatively thin steel, and then attached to the surface, through knocking to build, forming a whole, and finally quenching and forming.

It is not said that it is quenched, but it is a liquid that looks like water, but exudes a unique taste, this liquid Zhang Xiaobao has never touched, but he knows that the reason why those divine weapons are so strong is because of this.

Even he tried not to use the method of Miaojiazhuang, using his previous method of building to make 100 steel, with this quenching, the probability of producing fine iron weapons has also increased by more than 5%.

He couldn't help but sigh, obviously Dinghaihou is a child, why do you know so much, is it difficult, this is the secret of the nobles.

But in this workshop, he is not the only blacksmith, some people have even stayed in the Ministry of Industry, and even achieved the position of a master craftsman, but after getting old, he retired, although he couldn't build it, but he took an apprentice and was also invited, as a technical consultant, he had never heard of it.

In short, in Zhang Xiaobao's eyesight, Dinghaihou is very mysterious, just with these secret recipes, several times more efficient refined iron, and these methods of large-scale production, not only do not affect each other, but promote it, he knows that this workshop will definitely be prosperous.

Iron is a necessity, even if it is placed on civilian use, his previous blacksmith shop, 5 kitchen knives a day to build efficiency, just support a dozen guys, now, the efficiency here must be far exceeded.

In the mood, Zhang Xiaobao took out the steel bar that had been prepared a long time ago, carefully recalled the previous operation steps, and then began to build, in the rising furnace temperature and neat and rhythmic percussion sound, the steel bar gradually combined with the embryo into one, and then became smooth. 10