After thinking of these techniques, Marin hurriedly wrote them all down in his notebook, and then personally went to the forging base near Lyle City in the south, and asked the craftsmen to cooperate, try new methods, and forge new sabers.

Of course, first of all, Marin asked the steel mill to get a batch of medium carbon steel bars. Then, it's time for the craftsmen who are responsible for making the swords to forge the swords.

It is not difficult to build medium carbon steel bars, because the medium carbon steel made by Marin's steel mill is refined twice and cleaned with slag agent, so there are few impurities in the steel bars, and there is no need to forge them like Oriental craftsmen to knock out the impurities inside.

For knife casters, they only need to exert their strength to hammer the medium carbon steel bar into the shape of the blade. The process of beating is also the process of bringing the inside of the steel itself closer together. In later generations, in order to forge qualified aircraft wings, it was even necessary to use tens of thousands of tons of hydraulic press to violently forge the aluminum alloy wings to make the wing strength sufficient. Otherwise, if the wing strength is not enough, the wings will fall off when the aircraft is flying......

Therefore, to make knives, the forging process is indispensable. Because, the process of forging can make the original loose structure of steel at the time of casting become more compact and enhance its performance.

Here I have to mention the difference between the cast cannon and the forged cannon, have you seen the Hongyi cannon? The walls of the tube are so thick that they look heavy...... That's the reason why ancient steel technology was backward and had not been forged. Don't look at the thickness of the barrel wall of the ancient cannon, the bore pressure that can be withstood may not be as large as the barrel with a thinner wall in later generations.

The rise of the German Empire relied on Krupp's steel cannons. And the reason why Krupp's artillery is powerful is because Krupp artillery is a forged cannon, which can withstand a large bore pressure. Before the Franco-Prussian War, forged steel cannons were rare. In the American Civil War before the Franco-Prussian War, the main artillery Napoleon cannon was a typical cast cannon.

Krupp's artillery first used a large-tonnage forging press to violently forge the steel column, which made the internal crystal structure of the steel more compact, and at the same time, the ability to withstand bore pressure was greatly increased.

It was only when the steel pillars were almost forged that Krupp began drilling with a drill rig. Although it became difficult to drill forged steel columns, the resulting barrel had a much higher resistance to bore pressure. Moreover, artillery can also be made lighter. Otherwise, if you still use casting, you need to make it thick and bulky like the Hongyi cannon......

Then, the French army, which still used the casting cannon, was beaten by the Krupp forged cannon of the Prussian army...... Then, forged cannons became popular in Europe, and forged cannons withdrew from the stage of history......

……

In order to improve the metal properties of the blade and plate armor, at first, the steel bars were actually sent to the hydraulic forging hammer on the side of the artificial reservoir for strong forging. After that, the medium-carbon steel bars that have been forged by a hydraulic forging hammer are hammered by the knife casters to adjust their shape. After all, hydraulic hammers are rough and sometimes deform the steel bars too much. Therefore, it is necessary for blacksmiths to readjust their form by heating and forging......

As the knife casters forged, the steel bars were hammered more and more like knives......

When the blade is basically formed, it is the carburizing stage. Marin specially brought his own soybean paste made from soybeans from the Americas, and combined it with charcoal and clay powder, and began the process of solid carburizing on the surface of the blade called the "steel stew method......

After a few hours of simmering in the crucible, Marin felt that the carburization was almost done, and then the salt and oil quenching began.

Salt quenching Marlin still uses horse urine, after all, although it is said to be salt quenching, Marlin does not know if there are other ingredients in horse urine that are good for swords. Therefore, when the salt was quenched, Marlin directly used horse urine, but in order to enhance the effect, he also added table salt to the horse urine to make the concentration of salt larger and enhance the effect.

As for oil quenching, it must be inedible whale oil. That thing Malindo doesn't hurt to use. Now, there are five whaling teams on the island of Newfoundland, and whales are often killed. If Marin hadn't limited the number of kills they had, it would have been possible for those whaling teams to kill knife whales every day. After all, there are very few fleets of whales in the world, and Newfoundland's fishing grounds are so rich that there are too many whales to eat small fish here......

……

After a lot of hard work to get the beta version of the new saber, Marlin couldn't wait to test it for the guards. There are three new sabers created this time, one is used to cut with high-carbon steel sabers, and the other is used to slash with this grandmother's ordinary European iron knife......

As a result, Marin was pleasantly surprised to find that the new saber that had undergone complex processing was really extraordinary......

The result of the confrontation with the high-carbon steel saber is that the high-carbon steel knife is broken, but the new saber is cut out of the gap. After all, high-carbon steel knives are inherently harder...... When slashing, the high-carbon steel knife was just too easy to break, and the new saber bounced back after bending, and it didn't break after all, but it was cut out of the gap by the hard blade of the high-carbon steel knife.

And against the traditional European iron knife, it is naturally a big victory, completely crushing. The new saber not only cut off the ordinary iron knife, but also only scratched itself......

……

After testing, the new saber retains the advantages of the high blade hardness of the old high-carbon steel knife, but at the same time the toughness of the blade is greatly enhanced. Slash against a high-carbon steel knife and win. In the face of those iron knives in the current era of Europe, let alone naturally.

Karn's eyes lit up as he snatched the third untested saber as his saber. After all, for a general, a treasure sword is very attractive.

Marin shook his head, he didn't grab the knife with Karn. After all, this new saber, strictly speaking, is only a low-cost compromise product, a large road goods used to widely equip cavalry, and it is not a high-quality product.

In fact, if Marin wanted a sword, he could have sent someone to Japan to hire a senior knife caster to create a new style of sword using the stacking forging method.

What's more, India's natural pattern steel Uzi steel has not been discontinued. If you want a treasure knife, go to India to buy a batch of Uzi steel and come back.

"Oops, I almost forgot, I sent a fleet to India this time, and I can buy some Uzi steel!" Marin patted his head and hurriedly sent someone to inform the trade representative Draka, who was preparing to go to India, and ordered him to purchase a batch of natural pattern steel Uzi steel after going to India, and then use it to make treasure knives.

Natural Uzi steel, coupled with Marin's advanced carburizing and quenching methods, will inevitably be able to obtain high-grade treasure knives......

Of course, the sword made of Uzi steel must be a benefit for Marin and the noble officers. As for the ordinary cavalry, it is still a new type of saber specially treated with medium carbon steel. Anyway, much stronger than ordinary iron knives in Europe. Moreover, in the face of high-carbon steel knives, it can also be a battle. Even, the high-carbon steel saber can be regarded as a treasure knife compared to the iron knives of the European era......