DIN 50190 STANDARD PDF

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Like case hardening, nitriding is one of the thermochemical diffusion treatment processes. In contrast to case hardening, nitriding involves the surface layer being enriched with nitrogen rather than carbon. Workpieces made of ferrous materials exhibit better wear, strength and corrosion properties after nitriding. The increase in nitrogen content also leads to an increase in hardness. As long as it is thermally stable, the original structure remains unchanged. Then the nitrogen donor is transported to the workpiece surface and adsorbed.

This results in a release of nitrogen atoms at the specimen surface. The nitrogen atoms are absorbed and diffuse further into the workpiece interior. The nitriding layer is created. Determination of the nitriding hardness depth is defined in standard DIN To the general tips. First, the core hardness must be determined. This is ascertained from a minimum of three hardness test indents and allows the hardness limit to be obtained.

Subsequently, hardness indents are applied from the edge to the workpiece interior at precisely defined distances. The test method to be used is Vickers in the low-load range. The nitriding hardness depth is derived from the curve representing the hardness over distance from the surface by measuring the distance from the surface to the calculated hardness limit.

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The data are not passed on to other recipients. Further information can be found in our privacy policy. Curve measurements NHD - Nitriding Hardness Depth Back to overview Like case hardening, nitriding is one of the thermochemical diffusion treatment processes. The surface of the specimen to be measured must be finely machined. To the general tips First, the core hardness must be determined. Full service competence. By using the website, you agree. I Agree.

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Your browser does not currently support JavaScript. It is possible that some feature will not work. JavaScript is required for the online shop to function fully. Here are the instructions on how to enable JavaScript in your web browser. Hardness depth of heat-treated parts; determination of the effective depth of hardening after nitriding. Designation standards: DIN Publication date standards: 1.

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DIN 50190-3

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