Manufacturing method of micro lead delay detonating detonator

Abstract

The invention relates to a manufacturing method of a micro lead delay detonating detonator, belonging to the field of production of civil blasting devices. The manufacturing method of the micro lead delay detonating detonator comprises the following steps of: (1) charging delay powder into an aluminum metal pipe; (2) drawing the aluminum metal pipe charged with the delay powder into a slim metal pipe with the diameter of 1.4-2.6 mm; (3) carrying out plastic coating on the slim metal pipe to form a delay body, wherein plastic coating thickness is 1.5-2.5 mm; (4) cutting the delay body into delay elements with the lengths of 8-200 mm; and (5) assembling to manufacture the micro lead delay detonating detonator. According to the invention, the heavy metal lead is prevented from polluting the environment, the delay accuracy of the micro lead delay detonating detonator is enhanced and the cost of the micro lead delay detonating detonator is reduced; in addition, the micro lead delay detonating detonator can be produced by adopting an integral type structure and also adopting a split type outer delay structure, and delay time is not influenced by the body length of a fire detonator, therefore the requirements on special users can be met by greatly prolonging the delay time.

Description

technical field [0001] The invention provides a method for manufacturing a micro-lead delayed nonel detonator, which belongs to the field of civil blasting equipment production. Background technique [0002] Delayed nonel detonators currently use lead delay elements to achieve the purpose of detonator detonator extension. The commonly used method is to put the delay medicine into the lead pipe, and use the drug sleeve to draw it into a lead core delay element of a certain diameter, and use the energy excited by the detonator to ignite the lead core delay element (need card Zhongyin or Using interference fit), the delay charge in the middle of the lead core delay element detonates the priming charge through a certain combustion process, so as to achieve the purpose of delaying the detonator detonator delay. [0003] Existing technologies in this field: [0004] Chinese patent, patent number 200720139475, the disclosed millisecond nonel detonator extension body, the specific...

AI Technical Summary

Problems solved by technology

[0006] The delay detonator detonators of the above several structures need more delay charges and lead tubes, which have higher cost, and their detonation reliability is poor at the same time. Usually, in order to improve the detonation reliability, some propellants are added on the top of the lead delay element. Undoubtedly increased the cost of the detonator detonator, also increased the safety risk

At the same time, the production process of the nonel detonator of this structure is relatively complicated. When the delay time is relatively long, the delay accuracy is greatly reduced, and it often fails to meet the requirements of national standards.

Images