How to choose a reliable and high-quality hand tools

When choosing hand tools, you should know how to distinguish quality products from those that are unusable after the first use.

2015-11-14 09:03:40 76

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Types of tools

All the hand tools are divided into professional and standard (also called semi-professional or Amateur). The process of making a tool for professional use consists of many stages: first a steel blank is subjected to hot forging, and then forging her perform under pressure, then quenched, anneal, grind and strengthen working surfaces induction hardening by high frequency currents, and then perform the plating, phosphating or Nickel plating the finished product. The steel used for the production of such a tool is necessarily alloyed with molybdenum, chromium or vanadium. Professional tool designed for the daily hours usage in the service station. It's another thing semi-professional tool. It is produced according to a simplified technology using relatively cheap raw materials. The cost and quality of it is significantly lower than professional. It is designed for occasional use at home (garage) conditions and the resource is limited. There is another kind of instrument – the so-called prop. These products are cheap and low dimensional accuracy. The technology of tool production consists of only two steps: the molding and application of protective coatings. Because of the low quality material used in its production, the prop tool can deform or break, and not unscrewing the nut or bolt.

appearance and price

Visually determine the quality of the metal from which made the tool, it is impossible, however, to assess the level and quality of processing products everyone can. Do not be misled by the attractive surface gloss of the tool – it is not always an indicator of quality and the quality of the product. Evaluate the accuracy of the geometric shapes tool and make sure there are no defects in its surface. Pay attention to the brand, it must be embossed and not painted or acid. Check the connections between plastic and metal parts of the tool, the lack of effect of sliding the handles and knobs. The rough surface of the sting of a screwdriver is not an indicator of poor quality of metal processing, and indicates the product is made of high-alloy steel with a coating on its tip special anti-slip coating. The same applies to other instruments: keys, heads, pliers and other. Perfectly smooth and shiny surface of the product in combination with low price indicates that this instrument was most likely made of steel of low quality. The explanation is simple – to provide high-quality surface treatment of the product at minimum cost is possible only in the case of using a material having a low hardness and strength. The tool of decent quality can not be cheap – high-quality steel, numerous processing steps, which improve its strength and mechanical properties, quality control at all stages of production would make the cost of the finished product is quite high. Remember a cheap tool is not only unreliable, but dangerous.We wish that you have purchased the tool does not become a decoration of the garage or the trunk of a car, and have served you faithfully, without breaking and without leaving the line! Good luck to you!

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