Li Zhi's smelting method is to use covered charcoal for smoldering, and ordinary combustion will only cause the steel to lose carbon.

Smoldering this method makes some unburned carbon monoxide react and eventually become a carburizing process, and Li Zhi adds a more advanced smelting process to locally supplement the carbon content of the wire drawing plate, and then improve its strength through quenching.

Compared with the combination of ancient smelting and forging of handmade steel, which needs to be repeatedly hammered and carburized to increase the strength, the advanced smelting process can be regarded as a real handy to improve the quality of the steel.

Using the wire drawing plate as a test for the requenching effect is only a small test for Li Zhi's knife, but the process requires complex and strict processing, and the modulation of quenching medium requires his exclusive formula.

After the smoldering was completed, Jiang Shan also completed the independent medium modulation under the secret guidance of Li Zhi, which is a kind of water and oil combined with rapid coolant, where there is everything needed for hand-forged materials.

At the same time as the repeated quenching of the wire drawing plate, Li Zhi made molten steel in front of the blast furnace alone, quenching it into the most basic blacksmith skills, with the key property data of temperature and fire provided to the country, and then the secret recipe to configure the coolant, it is a very simple thing.

What Li Zhi did next was the core part of his smelting process, where high carbon content is the key to the steelmaking process, but if it is not well controlled, it will become the weakness of steel.

The high carbon content results in a sharp edge and good retention, but the amount of carbon in the overall mixture is almost uncontrollable.

The product with too low carbon content is wrought iron, which is too soft to be used in weapon manufacturing; The product with too high carbon content is cast iron, which is too brittle. If the process is wrong, the steel becomes a large discus of iron carbide, an iron that is so brittle that it is unbearable.

Li Zhi's whole set of ancient smelting processes actually comes from the classical records of Gu Tianzhu, which is the relevant memory in his mind.

But it can perfectly combine hardness and toughness, two contradictory attributes, and can keep the blade sharp for a long time, and reach the highest level of hand-forging with both rigidity and softness and gorgeous appearance, which is the reason why Li Zhi chose it at present.

At this time, sword craftsmen existed for the needs of war, and how metallurgists controlled the inherent brittleness of high-carbon raw materials and forged them into weapons for use in battle was undoubtedly the most valuable smelting method in this era of cold weapons.

Half an hour later, the quenching had been completed, and the experienced blacksmith knew the effect just by striking it with an iron tool.

At the same time as Li Zhi completed the molten steel ingot, he was also recruited, and in the manual forging, the correct palm pliers and hammers are also the most important part of the realization of process requirements and guarantees.

This process from smelting to forging, the temperature requirements are very harsh, the temperature shall not be higher than 1,000 degrees during smelting, and the low temperature must be low during forging, which is very similar to the ancient Chinese traditional cold forging.

Generally, the sword is hammered and formed at high temperature, and the steel has good plasticity, but at high temperature forging, a large amount of carbon will be lost, and carbon crystals will be destroyed, so it is difficult to master low-temperature forging, and the technology, experience, and labor required are more than other steels, but the yield is much lower.

Therefore, Li Zhi personally palmed the pliers, hammered by the rivers and mountains, folded and forged to form a welded pattern steel, which is also a unique secret method in the ancient forging of Gu Tianzhu, the key is that the person who holds the pliers has an accurate grasp of the angle, temperature, hammer surface conversion, quenching and so on.

Li Yi was busy while speaking to explain the country step by step, and they were already surrounded by spectators, all of whom were nervous and curious in silence.

At this time, the steel raw material, because it is only the first trial, does not need too special steel requirements, and will be used as cutting steel wire drawing, for weapon manufacturing methods, it is also reasonable.

Finally hammered the iron into small thin strips, and the strengthened version of the wire drawing plate that was praised by the country and mountains had already been arranged, Li Zhi quickly pulled the iron bar through the largest round hole in the wire drawing plate, and the thin iron bar became an iron wire of consistent thickness.

When the iron wire is waxed, when it is partially heated, some powdered borax is sprinkled to be used as a catalyst, and then it is pulled through a slightly smaller round hole after heating.

In this way, the round holes of various specifications were filtered over and over again, and finally pulled into the size that Li Zhi needed, and the steel wire at this time was as if it had been injected with magic power, turning into a dazzling Cheng Liang steel wire, and if you look closely, it is as sharp as the ultimate blade. Li Zhi plucked a piece of hair, straightened it with both hands, and only touched the wire slightly, and the hair broke off in response to the situation.

"Good guy, it's broken, it's sharp, it's as sharp as a peerless divine soldier!" Li Qi exclaimed loudly, leaned over and took the hair from Li Zhi's hand, twisted it in his hand, exhaled lightly, and sure enough, he saw that the hair was cut in two again.

Everyone in the audience also exclaimed, this is the first time they have heard of this kind of sharp thing, and there is no exaggeration in the metaphor from their mouths.

"Ordinary saws and large logging saws will replace the saw blades with this kind of steel wire, and we will try it tomorrow! It's a pity that there are no higher-grade ores at this time, so try to make a knife for yourself! ”

At this moment, Li Zhi was in a good mood, and he succeeded in the first trial, which made him excited, so he had the idea of striking while the iron was hot.

When Jiang Shan ordered someone to transform the saw and returned, he also took a stone the size of a watermelon in his arms, and threw it in front of Li Zhi to introduce, "This is what I brought back from the mountains more than ten years ago and saw in a valley. ”

This piece of surface stone is like coke, and it is densely covered with countless small potholes, which is obviously extremely heavy, and just throw it away, there is a dull sound of "bang", and a small pit is smashed on the ground.

Li Zhi was overjoyed, although there was no way to analyze the content of various elements in it, but he had already concluded that the things that his true qi could not penetrate were basically rare things, such as the branches of the iron birch tree, even if the bark was the most shallow, his true qi could not penetrate it.

"It shouldn't be ordinary, the weight alone is extraordinary, and it's definitely not an ore! In this way, let's throw it into the furnace to melt it first, if it is a real meteorite, the melting point will be extremely high, I am afraid that with the current refining furnace, it will not be dissolved for a long time, and it should not be effective! Tang Qi, you also put a Tang knife in the furnace to burn red, let's try it and quench it again to see if it can have an effect! ”

Li Zhi turned to look at the country, "Let's take out the biggest whetstone and polishing stone here, and place them separately, if the effect is good, we will transform some Tang knives tonight, and everyone will help!" ”

Tang Dao's reddening is much simpler, it is also smoldering, but the effect of burning red is also extremely fast, it is still Li Zhizhang's pliers, Jiangshan hammering, the folding process he used, in addition to the technique, is the exclusive quenching medium and cinnamon bark, frankincense leaves additional.

Tang knife using Han sword hundred steel forging process, in the history of cold weapons to later generations of great influence, both in technology and art have reached a very high achievement, can be said to be the pinnacle of the history of Chinese swords, but compared to some famous swords there are many inferior.

The secret method of forging is to add specific trace substances in the process of repeated heating and forging processing, so that the knife body created will have a magic pattern such as artificially carved natural beauty, which is a perfect combination of ancient powder metallurgy and forging technology.

Tang knife itself has a hard outside and soft inside extremely strong toughness, while improving the forging process, not only the appearance will be greatly improved, the strength of the knife body, the sharpness has also made a qualitative leap, of course, this is only Li Zhi's ideal at this time.

Once the transformation was successful, it could be regarded as a real improvement in actual combat performance and durability, so that the Tang knife at that time could split any armor and equipment, and mainly create products for his arsenal in the future.

After a long jingle of masterpieces, the first Tang knife was forged out, for grinding, Jiang Shan was more experienced than Li Zhi, so he sharpened it himself, and Li Zhi gave a group of sergeants to watch and learn.

At this time, he was already sweating profusely, and the three girls of Qingqi ran up to wipe it for a while, but fortunately, Li Zhi had already taken off only a shirt before, and seeing the half-open sturdy, Pang Qi did not forget to stretch out his fingers and poke around.

The King of Linhuai County came with a light cough, "Text, Guan Ming may come back to negotiate with you on behalf of the Ministry of War later, once the new Tang knife is perfect, it may be another great achievement, and its significance is no less than gunpowder!" ”

"Why didn't Brother Fanghua come?" This person is the eldest son of the third generation of the king of Nanjiang, Li Qi and Li Fanghua, the secretary of the military department, and Li Zhi has a close relationship with him.

"Don't you need to deal with the Liujian Village Paper Mill? Someone vainly transferred Fengwu County, and according to the confession of the three Guangdong merchants, Li Yin, the envoy of Guangdong Jiedu, was involved, and even explained the interception plan halfway! Li Shangshu needs to handle this matter, this time not only that Li Yin, but also some of the commanders of the garrison of the two lakes along the way are also involved! ”

"It seems that our previous inferences were correct, Li Yin was really bold and reckless, and he made such an undisguised fanfare!"

"That's because he thinks that there are people in Chang'an City who support him, and he himself is far away from the emperor, so it doesn't matter if he is exposed! But I don't know that the Liujian Village Paper Factory is nominally hanging an official signboard, just intending to block and destroy the confession in the rice paper, it is enough to pull him off the horse, and this matter is also related to the Chang'an City Special Economic and Commercial Zone, isn't your Shang Fangjian awarded for this reason. ”

"Not only him, but the people involved in planning this matter are also too self-righteous, as long as the Holy Lord is still on the throne for a day, the realm of Chang'an City is not something they can use to do their brains. A bunch of foolish guys! ”

"Maybe it's not true, didn't you think that the Luoyang side frequently used temptation methods, maybe this matter was also a temptation passed on from there!"

"There won't be fakes, otherwise these people wouldn't be so confident, but the strict formulation of the plan is one thing, and the specific implementation is another state, or is it because the minions below are too arrogant!"

"About this kind of Tang knife?"

"I plan to cooperate with the Li clan army in Cliff Mountain first, after all, there is still a more well-guarded arsenal of arms in the local area! After the Tang knife, there will also be bows, crossbow machines, round shields, heavily armored vehicles, and even arquebuses. Especially the latter, before officially equipping, it needs to be strictly kept secret, and there is undoubtedly the best location! ”

The king of Linhuai County agreed, "Ordnance is for combat services, the standard is inevitable, the standing army and auxiliary equipment are different, and other arsenals focus on building bows, crossbows, round shields, Mo knives, horse lances, and armor!" ”

"Ordinary Tang Dao is also fine, and you can even consider building a Tang Dao side at the moment to support some living forces there. As long as this new type of knife can break through armor, I think the significance is indeed not to be underestimated, and in the future, the relevant technology can be used in other places, such as metal chariots, and I have more than just a secret recipe in my hands! ”

Li Zhi has a lot of military-related knowledge such as wooden mechanical principles and machine bracketing techniques, and just a few memory outlines are enough to create countless military and civilian products that far exceed the technology of today's era.

In order to cooperate with the cavalry to complete the nomadic army with fast movement and long distances, the motorization of the chariots and horses of the main infantry units of the Tang Army and the Central Army was the next target he focused on.

At that time, the main opponent of the Tang army was the nomadic light cavalry, and it was mainly a long-distance attack, and the cavalry was lightly armed, but there were other soldiers, chariots and horses to improve the battle armor for backup, and the battle armor and infantry armor system would be the future development trend of equipment.