In 1960s, China began to develop its own hand grenades, and a large number of improved hand grenades with wooden handles appeared. Among them, the Type 67 Grenade has the best performance and has become the favorite equipment of China soldiers. Four Type 67 grenades have become standard equipment for soldiers. Since our army was not equipped in 1960s, it has become the largest and most widely equipped grenade in China and even in the world, with an inventory of over one billion grenades.
Type 67 Grenade with wooden handle, which was developed in the mid-1960s and finalized by 1967. On the basis of Type 63 wooden handle Grenade, it improves the firing mechanism and the structure and production technology of all-round sealed packaging. For the structure of the firing mechanism of Type 63 Grenade, it is easy to cause early explosion due to fire channeling, and Type 67 wooden handle Grenade is a good way to avoid this kind of problem.
A fuse is added between the ignition tube and the detonator in the ignition mechanism. One end of the fuse is clamped with the ignition tube and the other end is clamped with the detonator. The joint is coated with sealant to prevent moisture and fire, and lead thiocyanate is used instead of mercury. At the same time, strict control of production technology not only solves the problem of early explosion, but also protects against moisture.
This bomb is made of cast iron, with a total mass of 600g, a diameter of 48mm, a total length of 204mm and a main charge of 38gTNT. It can produce 70 1 10 fragments, with an effective killing radius of 7m, and its killing power to fragments beyond the explosion point of 20m is still not small.
In addition, at that time, the requirements for the quantity of grenades and other light weapons were much higher than those for the quality. The 67-type wooden handle Grenade was very popular because of its simple structure, low cost and convenience for mass production, but its shortcomings were still obvious, such as excessive mass, large volume and small number of fragments.
However, it was not until the reform and opening up that the PLA's thinking began to change, and people began to pay attention to the defects of 67-type and 77-/kloc-0-type wooden handle grenades, and then developed 82-type series oval grenades and mass-produced equipment.
Although the front-line troops of the People's Liberation Army were most equipped with type 86 oval grenades, they were killed by plastic shells and steel balls; However, with its huge inventory, Type 67 wooden handle Grenade is still the standard equipment of our army and continues to be used to train or equip second-line troops.