Refers to the triangular bayonet, a good knife, generally as long as it is sharp enough; But as a combat knife, this is not enough. First of all, its cutting edge should be sharp enough and hard enough, and the blade should have appropriate strength and toughness. Shavers are sharp, but because they are not hard enough, cutting harder things will become dull. Although some knives are usually sharp and wear-resistant, they are easy to break and crack when they are twisted by impact, which means they are brittle. After heat treatment, Mitsubishi bayonet has extremely high hardness and can penetrate ordinary stab-resistant clothing. In this respect, Mitsubishi Sting is undoubtedly outstanding because of its high hardness, brittleness and good toughness ... It is not easy for knife makers to make a good knife with the same metal material. It is a good choice to make blades and blades with different textures of steel, among which the common processes are steel clips and cladding. This process combines the hard and brittle blade with the soft and flexible blade. One of the difficulties is that in the process of combining different steels, it often fails due to factors such as surface oxidation and ash inclusion, resulting in high rejection rate. This craft is very popular in the eastern countries with developed manual workshops, and the traditional rapier in China and Japan is made in this way.

The shape of the knife is also important. Saber should have enough lethality, besides weight, center of gravity, curve and sharpness, the severity of the wound and the difficulty of pulling it out after puncture are particularly important. There is often a fragment in the novel: someone can survive after being stabbed, but once the knife is pulled out, it will be easy to find all kinds of pictures of "N famous knives in the world" on the Internet, and all of them achieve the same goal through different details. Therefore, the body shape with narrow front and wide back, the blood groove at the edge of the blade and the sawtooth at the root of the blade are all for this reason. Triangular thorn is one of the most powerful sabers, probably because of its structural modeling.

1, besides bleeding, the blood groove is more important for the next action. After the thorn enters the human body, the blood is discharged along with the blood ditch, so the muscle can't stick to the bayonet surface when contracting, and can't "suck" the bayonet, so the thorn can be pulled out of the human body calmly for the next action. If there is no blood groove, the thorn will be wrapped in the human body because of blood pressure and muscle contraction, and it will be very difficult to pull out the thorn, which will affect the soldiers' further action. I believe that no soldier is willing to waste time drawing a bayonet.

2.

The wound pierced by the triangular spear is generally a square hole, and the two sides of the wound cannot squeeze each other to achieve a certain hemostasis and healing effect. Moreover, this kind of wound cannot be bandaged (that is, it is not easy to do the initial first aid treatment). What's the point of sewing the surface if there is a tendon rupture or a blood vessel rupture inside?

Anyone who has seen Jet Li's The Bodyguard of Zhongnanhai will be deeply impressed. After piercing the human body, air will be quickly introduced through the blood tank. Air forms many bubbles in the body and blocks blood vessels. It only takes about 8cm to pierce any part of the human body to make the opponent die instantly, and it is effortless to pull out the puncture in the body cavity with negative pressure eliminated.

4. The light of phosphating surface replaced baking blue. Due to the need of metal properties, a certain amount of arsenic is added during smelting (the complete finished military thorn is non-toxic), and the phosphorus coating on the battlefield surface is worn to expose the arsenic-containing steel body, even if the enemy's skin is only scratched, it is difficult to heal, so it is not difficult to understand why after the self-defense counterattack against Vietnam, various legends of "military thorn soaked with toxins" will be circulated in the rivers and lakes.

Features:

The blade is prismatic and has three blood grooves. The polished blade is grayish white and does not reflect light. Our country's three-edged army thorn is directly mounted on the gun, which can be folded and put away, but generally it is not removed for use. It has no flat blade, only a triangular blade, so it can only stab but not cut, so it is called "stab" instead of "knife". There is also a blood groove on the big head knife, but the effect is far less than that of the triangular thorn. Because the power of the triangular thorn is more reflected in its triangular structure.