First, look at the implementation of the tool standard
Abroad has very strict standard regulation to hardware tools, the quality of imported products is so relatively taller also a few. We can feel the quality of the tools by hand. Generally speaking, tools that feel heavy are of relatively high quality; Special attention should be paid to the handle end of the tool; Hardware tools also exist a variety of varieties, choose their products with ease.
Two, look at the tool material
Tool materials on the market are basically divided into stainless steel, copper, zinc alloy. Stainless steel is the best material with high strength, strong corrosion resistance and no discoloration. Copper is more general, superior mechanical properties, higher price; Tools of high quality zinc alloy strong wear resistance, corrosion resistance, and easy to shape.
Three, look at the tool surface treatment
Hardware tools form a layer of dense protective film on the surface of the product through surface treatment, which plays the role of anti-corrosion and anti-rust, and makes the tools more beautiful and durable. The dense protective film is also the standard to measure the quality of tools. Hardware tools with good quality are made of a variety of materials, bright color and lustre, and have no signs of rust and oxidation.
The management of welder qualification must be strict. Welder is one of the special types of work clearly stipulated by the state. The training, assessment, evidence collection, review and use management of personnel must strictly comply with international regulations to prevent welding without license.
Must be fully dressed. Welding workers shall ensure that the quality of working clothes, insulating shoes, insulating gloves, protective masks and shading lenses are qualified and the performance meets the requirements of national standards. This is the most basic and effective measure to prevent electric shock, electric burn, skin metallization, electro-optic eye, electric branding and mechanical injury. It is strictly prohibited to use factory members, metal structures, tracks, pipes, or other metal objects to lap instead of welded cables. The use of these metal objects as welding cables, it is easy to cause electric shock, but also due to bad contact, sparks, cause fire.
At the end of the work, immediately cut off the power supply, coil the cable, clean the site, after confirming that there is no hidden danger, can leave.