With a new extruder and a lost wax casting mold, it is not difficult to cast a steel helmet with excellent quality and beautiful appearance.

After another ten days, Yang Wenli held a pair of steel helmets that had just been cast and squeezed with great force, and he was very excited, the steel helmet in his hand was definitely the best steel helmet in the world, there was no one.

Thanks to the precision casting of the lost-wax method, this armor is very beautiful, and the surface shimmers with a metallic sheen characteristic of steel.

The helmet is a unique Fan Yang hat style of the Ming army, all steel texture, the edge is relatively wide, can effectively protect the arrows from top to bottom, protect the face door and neck, and is a bit like the Vietnamese army helmet style, but the edge is wider, the upper part is longer, in line with the characteristics of ancient men with a funny head, there are criss-cross four stiffeners, which can effectively improve the strength of the helmet, there are sharp needles on the top, and it will be decorated with various tassels in the future, which can effectively identify the rank of officers and soldiers, which is considered an ancient version of the military rank.

The chest helmet adopts the principle of ergonomics, which is very suitable for the characteristics of the chest, in fact, it is a person lying naked on the clay for sampling, can it not fit?

On this basis, on the two chests, the animal heads and weapon symbols with the characteristics of military ranks and classes are carved.

Shoulder helmets, arm helmets and gauntlets, these parts have only a hidden sculpting process, the purpose is to keep the surface smooth, and the enemy's arrows or weapons can easily slide away.

Due to the weight, the belly helmet and apron are steel fragments, which will be inlaid on the cowhide in the future, which not only strengthens the protective strength, but also effectively reduces the weight.

It's not a full-body armor, there is no armor on the back, Yang Wenli plans to use leather armor instead, that is to say, Yang Wenli only designed the protection to attack forward, and the escapees have no protection on the base wood, only a layer of leather armor with weak protection.

The casting of the steel helmet has not yet been completed, and it has to go through two quenching and tempering processes of carburizing and seeing water. Carburizing is to further enhance the hardness of the steel helmet, which is not simple, if there is too much carburizing, the steel will become brittle and brittle, which actually reduces the protective strength. Therefore, in the later stage of this carburizing process, Yang Wenli still has to experiment to get the best carburizing amount.

Seeing water is Yang Wenli's exclusive rare earth water seeing process, which is actually doping, infiltrating a layer of rare metals on the surface of the steel helmet in order to further improve the strength and antioxidant effect of the steel helmet.

Since he first arrived in Happy Valley, Yang Wenli had to try the white plaster mud rare earth here one by one in order to find out the white plaster mud with the best effect.

There are no shortcuts to science, and the best solution can only be found through continuous experimentation. Scientific research is also very time-consuming, and it took another month for Yang Wenli to give the standard process of steel helmet casting.

Yang Wenli stresses science and practice, and he has to test the development of steel helmets. The place behind the mountain where he tested the standard bow has been used by Yang Wenli as a bow and arrow training ground. The square in front of the council hall is not suitable for a training ground because of the people coming and going, and there are still people there to exercise their strength and slash the three tricks. The idlers here in the back mountain are not allowed to enter, and they are not afraid of accidental injury, so it is the most suitable for archery training.

When Yang Wenli took Yang Renri and a few Tuntian soldiers to the Houshan Archery Training Ground, the slave soldiers and some Tuntian soldiers who were practicing archery there saluted him one after another: "Great master......

"No courtesy," Yang Wenli said to them with a smile. He didn't force them to practice archery, but they practiced it spontaneously, so he was very pleased. In addition to the morning and evening exercises, the rest of the time depends on their consciousness, including strength training, only after the strength training meets the assessment standards, they are qualified to practice the three tricks of splitting and slashing and archery. Only when an individual's technical combat ability meets the assessment standards can they participate in future battles, and only when they have more than ten enemies in the battle can they get rid of the title of slave, so almost all slave soldiers and tuntian soldiers are training hard as soon as they have time. "The edge of the sword comes from the sharpening, and the fragrance of plum blossoms comes from the bitter cold." This sentence is indeed a wise saying.

Seeing the slave soldiers put their steel helmets on the wooden stakes that fixed the target, Yang Wenli began to aim and shoot from a distance of two hundred meters with a five-bucket bow, and there was an observer on the side of the target reporting the damage effect.

"The big boss, hit the chest helmet, did not penetrate, and the arrow slipped down."

After Yang Wenli heard this, it was not surprising that he took a bow and shot again.

"Big boss, hit the helmet, it didn't penetrate, the arrow slipped down."

……

In this way, Yang Wenli, who is extraordinary in archery, shot the other parts of the steel helmet one by one with a five-bucket bow, and hit it again and again, but it did not penetrate every time, and then Yang Wenli changed to a two-stone strong bow, and tried firing one by one, the steel helmet was still intact, and the arrow was bounced away, proving that at a distance of two hundred meters, the steel helmet had a very excellent protective effect.

Yang Wenli's miraculous archery technique caused bursts of cheers from the slave soldiers and Tuntian soldiers present.

Next, Yang Wenli tested the fire one by one at a distance of 100 meters and 50 meters, and the protective effect of the steel helmet at 100 meters was still the same, which further proved the excellent protective performance of this new steel helmet.

At a distance of fifty meters, the two-stone strong bow finally broke through the armor, but the helmet and cuirass lined with three layers of silk also failed to penetrate the silk, causing damage to the wooden stakes inside. The five-bucket bow still failed to penetrate the steel armor, and only caused shallow scars.

There is no need to try again, the protective effect of the steel helmet is very good, and Yang Wenli immediately laughed happily.

The steel helmet is qualified, and it can be cast in large quantities, because it is casting, and a steel mold that can be reused is used (note: because it is necessary to squeeze vigorously, the pottery mold must be converted into a steel mold. The production speed is very fast, it is the ancient version of the assembly line production process, and it is many times faster than the bow making because it has no waiting time.

From the molten steel to the casting of a complete steel helmet, and then through the quenching and tempering process, to the final post-assembly, including inlaid cowhide, helmet and chest helmet two deadly parts lined with three layers of silk, in order to further improve the protective strength, these processes can be made on the assembly line, the speed is incredible, only two days to cast three hundred pairs of armor. Yang Wenli also designed three specifications, large, medium and small, covering all adult body models.

After the quenching and tempering process, the steel helmet flashed with a black and faint light on the surface, very domineering, looking at this set of steel helmets, Yang Wenli has given his army a very domineering name: Black Armor Army.

And because the weapons and steel helmets he manufactured, the performance is too advanced, each weapon and steel helmet, are marked with Arabic numeral serial numbers, he hopes that in the future not to lose a weapon and steel helmet, whoever loses who is responsible, he will be punished heavily.

With the steel helmet is not finished, there must be a steel shield, but that is relatively simple, all the technical difficulties, in the development of the steel helmet, have been overcome, so as long as the steel shield is carved out of the model with the lost wax method, and then recast the steel mold, in fact, it can enter the assembly line production. The steel shield has only one part, which is much simpler, and three hundred faces were cast in just one day.

The steel shield is the shape of a round shield, which is not large, and the round shield used by Western knights is the same size, because soldiers have steel helmets, and the round shield only needs to protect the face slightly.

…… To be continued