Cannonball Twist What is it...?

A cannonball twist is a fuse.

The fuse is a powder or granular black powder with a certain density as the core of the rope, to cotton thread, plastic, paper and asphalt and other materials covered with a rope-like detonating equipment.

It is mainly used to ignite the fire detonator or black powder, but also commonly used as a delay in the extension of electric detonators in the extension element. Fuse extruded by external forces, the core density $ change leading to changes in ignition rate or even deflagration, resulting in blasting accidents.

There is a thing called potassium nitrate on the surface of the fuse. Firecrackers ignited, potassium nitrate decomposition of oxygen, so that combustion will not be interrupted, therefore, the firecrackers can be continuously exploded.

Expanded Information

1, papermaking: although the paper for making firecrackers is purchased, the paper for making the fuse is self-produced, and there is a pulp pool in the workshop, which is used to make the paper from wood pulp;

2, cutting the paper for the fuse: the whole sheet of the manufactured paper is cut into a single strip of long paper;

3, making the fuse: one end of the strip is fixed, and the paper is unfolded, and the fuse is made from a strip of long paper. One end is fixed, the paper is unfolded, with an iron rod dipped in nitrate powder, hand shake, the iron rod on the nitrate powder will fall on the paper to form a long strip, hand rub, a lead out;

4, pulp lead: such a lead is still loose, the workers have to use their hands to dip into the wet rice paste, hand in the lead a stroke, the lead dipped in the rice paste will not be loose, and then also need to lead one by one to fix the lead in the fan like a drying The first thing you need to do is to put the leads on a fan-like drying device to dry.

Baidu Encyclopedia - Fuse