Instructions for the use and maintenance of explosion-proof tools

1. The following precautions should be strictly observed:

1) Explosion-proof tools are a kind of safety protection products, so users must buy products that have passed the national certification explosion-proof performance test and identification. When purchasing, you should carefully understand the scope of application, performance, characteristics, usage methods and precautions specified in the manual.

2) Explosion-proof tools should identify the gas place before use, and determine whether the tools used have reached their explosion-proof performance.

3) Explosion-proof tools should not be used arbitrarily as ordinary tools in non-hazardous places, so as not to lose their due performance.

4) Explosion-proof tools are high-strength and corrosion-resistant in most flammable gases. However, it is not corrosion-resistant in all cases, such as in moist ammonia, acetylene, some ammonium salts, fluorine, chlorine, ammonium chromium, and some dichromate media, the degree of corrosion is considerable. Some media will undergo chemical reactions after contact with copper alloys to form highly dangerous explosive substances, such as acetylene and copper to form acetylene copper. Therefore, when using explosion-proof tools, try to use them in a dry environment as much as possible, and if it is impossible to avoid using them in a humid environment, try to speed up the operation and reduce the working time to prevent the danger of causing greater corrosion. Wipe it clean at any time after use, and it is strictly forbidden to put it in the same box with corrosive substances.

5) All kinds of wrenches of explosion-proof hand tools have different rated strengths, and it is strictly forbidden to overload the casing, and other tools other than the knocking wrench shall not be struck, so as not to cause overload fracture and deformation, affecting the normal use. When using the tool, it should be reasonably selected according to the needs of the variety and specifications, and it should not be used as a small substitute for a large one, let alone as a steel tool. It should be pointed out that when using live wrenches, pipe wrenches and wrenches, it is necessary to pay attention to the requirements of the direction of force, and shall not be arbitrarily twisted, when using tools with blades, the hardness of the workpiece itself should be determined first, and when its hardness is close to the hardness of the tool, it can be operated, and it is forbidden to use it when its hardness is higher than the hardness of the tool. When the workpiece is motorized tightened, semi-permanently fixed or corroded, and no other measures are taken before using the hand tool, it should be forbidden to use it to avoid damage to the tool.

6) After the explosion-proof tool is out of use, it should be wiped clean at any time. Those who are not used within half a year should be oiled or stored by anti-corrosion, and those that have been out of use for more than one year should be oiled and stored in a substitute or box. For used tools, some parts are naturally worn or damaged, especially those with blades, which can be trimmed in non-hazardous places. If the damage and wear are serious and it is not suitable to repair it by itself, it should be scrapped, and it should not be operated with illness.

Second, the application of the problem to pay attention to:

In the following two cases, the detonating spark is not generated by the explosion-proof tool itself, but by the working object, and the use of explosion-proof tools cannot prevent such explosions, and other explosion-proof methods should be used.

1) When the tool collides with the rock, there is a possibility of sparks. In this case, the spark generation is independent of the metal, and when the rock crystals break under tension, the mechanical energy of the impact becomes electrical. This electrical energy is released in the form of an electric spark. Sparks are especially susceptible to occurrence in rocks composed of quartz, silica and sandstone. Generally speaking, the higher the content of quartz in the rock, or the larger the particles, the more likely it is to ignite. In order to prevent the occurrence of explosion accidents, the rock can be immersed in water before operation.

2) There is a possibility of igniting sparks of explosive substances when striking or rubbing hot steel workpieces (pipes, hot containers, bolts, nuts, etc.) coated with aluminum paint with explosion-proof tools. If the powders of aluminum, magnesium and their alloys adhere slightly to the rusty (iron oxide) surface of steel, a violent exothermic "thermite reaction" may occur when hit by a hard object or even hard rubber or plastic, and it is likely to detonate.

3. Characteristics of beryllium bronze explosion-proof tools:

1) Beryllium bronze explosion-proof tool specimen is a synthesis of military materials and precious and rare metals, and the surface of the tool is golden yellow, which is an internationally recognized authoritative explosion-proof tool.

2) The hardness of the working face is not less than HRC35, the tensile strength is δ b 105-120kgf/mm2, the explosion-proof performance is high and the service life is long, and other technical indicators have reached the advanced level of similar products at home and abroad.

3) In the space of flammable gas hydrogen (concentration below 21%), operate in strict accordance with the instruction manual to ensure safety, and no spark explosion will be produced by impact (impact), friction and drop weight.

4) Beryllium bronze explosion-proof tools have zero magnetism, so they are also known as Antimagnetic Hand Tools and can be used in a magnetic field environment.

4. Characteristics of aluminum-bronze explosion-proof tools:

1) The aluminum-bronze explosion-proof tool specimen is synthesized with precious and rare metals, and the surface of the tool is aluminum yellow after being made.

2) The hardness of the working face is not less than HRC25, the tensile strength is δ b 75-85kgf/mm2, and other technical indicators have reached the advanced level of similar products at home and abroad.

3) In the space of flammable gas ethylene (concentration below 7.8%), operate in strict accordance with the instruction manual to ensure safety, and no spark explosion will be produced by impact (impact), friction and drop hammer.

5. Instructions for the use and maintenance of explosion-proof tools:

1) All kinds of tools should be cleaned of surface oil stains before use.

2) After use, the surface should be cleaned of dirt and accumulation, and stored in a dry place, isolated from corrosive substances.

3) Percussion tools can not be hit continuously, each blow should be timely removed from the tool blow part of the debris and rust before continuing to use, more than ten times with appropriate interval.

4) Wrench products should not be used with excessive force, nor can they be used to lengthen the arm with a sleeve or tie other metal bars, and to twist the fastener by hammering (except for the wrench).

5) The cutting edge tool should be placed in the sink and gently touch the grinding wheel for sharpening, and should not be used too hard and contact the grinding wheel for too long.

6) In the actual operation of knocking and smashing tools, it is necessary to remove the on-site debris and the oxide corroded by the working face to prevent the impact of a third party.

7) Non Sparking tools of various specifications should be operated carefully before and after use, handled with care, and should not be littered on rocks or cement floors.

8) Percussion tools should be immersed in water in the workplace before they can be operated in rock operations.