Evek GmbH sells modern high-precision instruments and measuring tools for evaluation of metal and alloy grades at manufacturer's prices. The supplier guarantees permanent information support as well as delivery of the equipment to the location specified by the customer.

Relevance

The machining grade of a work piece determines its accuracy as well as the labor required to ensure proper surface quality of the metal. If the quality deteriorates, the tightness and degree of fit of one part to the adjacent part decreases accordingly, and friction costs increase for moving products. The criterion for finish grade is the surface roughness of the billet, forgings, or finished part.

Clarity grades

The standard defines 14 cleanliness grades, of which the 1st is the roughest and the 14th is the most precise. These take into account:

• Rz - height or depth of surface irregularities;
• Ra - arithmetic mean deviation of a profile from its conventional average line;
• L - the length of the measured section in which the assessment of roughness is made.

Roughness

Surface cleanliness/roughness is subdivided into coarse (depressions and tool marks are easily distinguishable visually), fine (surface defects are hard to distinguish), clean (defects are visible only with special measuring tools) and very clean - reference. Buy measuring instruments and equipment for quantitative assessment of various grades of surface purity of metals and alloys offered by Evek GmbH. Advantageous prices of the manufacturer apply. The supplier provides timely delivery of equipment and instruments to the location specified by the customer.

Measuring technique

To determine the purity class of the surface of metals are used:

• Profilometers, which allow you to visually assess the quality of the surface finish of the metal or alloy;
• Profilographs, by means of which it is possible to record a profilogram - a diagram of changes in the roughness parameters of a product at a certain length of it;
• Metal tool microscopes, which are used to assess the surface quality of metal products machined to a high purity class.

In addition, reference measures - steel bars with different roughness, made of tool steels - are also used for rapid evaluation of metal processing class. By comparing the reference roughness with the actual roughness, you can quickly determine the roughness class.

Buy. Furnizor, price

Evek GmbH offers to buy cost-effectively instruments and tools for accurate measurement of roughness class of blanks and finished parts. The supplier provides prompt delivery of products to the address specified by the consumer.