Explosion-proof tool classification

Explosion-proof tools internationally collectively referred to as "safety tools" and "non-sparking tools", the domestic collectively referred to as "explosion-proof tools." Explosion-proof tools that are produced, sold, and circulated in China can be divided into two major categories: 1. Aluminum-copper alloy (commonly known as aluminum bronze) explosion-proof tools, the specific material is based on high purity electrolytic copper as the matrix by adding appropriate amount of aluminum, nickel, manganese, iron and other metals to form a copper-based alloy. 2. Beryllium copper alloy (commonly known as beryllium bronze) explosion-proof tools, the specific material is based on high purity electrolytic copper as the matrix by adding appropriate amount of niobium, nickel and other metals to form a copper-based alloy. The thermal conductivity and electrical conductivity of these two materials are very good. The hardness and wear resistance of aluminum bronze after heat treatment can reach HRC30o or more as much as that of beryllium bronze. However, the magnetic properties of aluminum bronze are slightly higher than that of beryllium bronze, but they all belong to the micromagnetic range. Both aluminum bronze and beryllium bronze can be applied. Strong magnetic environment. Explosion-proof tools can also be divided into two categories based on the manufacturing process: 1. Casting process: It is a traditional manufacturing process. It was an internationally-manufactured explosion-proof tooling process technology in the 1980s. Most of the explosion-proof tool manufacturers in China have been used up to now. Casting process advantages: simple process, low manufacturing cost. Disadvantages: product density, hardness, tensile strength, low torque, porosity, trachoma more lead to a shorter product life. 2. Forging process: the latest international manufacturing process is the use of large presses or punches, with a high heat forming mold made by one-time forging. Forging process advantages: can make the product density, hardness, tensile strength, torque greatly improved, basically eliminate blowholes, trachoma, so that the mechanical properties of the product life than the traditional casting process is about 1 times longer. Disadvantages: Large investment in equipment, equipment, and molds, resulting in higher costs. At present, domestic companies that use forging technology to produce explosion-proof tools have a few companies, including Sino-Park explosion-proof, lean explosion-proof, and Bohai explosion-proof.