Hardness testing improved at McConnel

The Rockwell test has improved both the accuracy of hardness testing and the variety of components that can be tested for this top UK maker of commercial grass and hedge cutting equipment.

The Rockwell test has improved both the accuracy of hardness testing and the variety of components that can be tested for this top UK maker of commercial grass and hedge cutting equipment.

Previously, McConnel used a 3000 kgf Brinell machine but its ball indenter could not reach many test areas on splined hubs, drive shafts, bolt faces, cutting edges, etc, while the optical measurement of indentations was interpreted differently by different operators.

These serious shortcomings meant that some hardnesses were impossible to establish to official standards.

One of Indentec's benchtop 8150 LK's has completely solved both problems.

The nose mounted indenter enables McConnel to Rockwell test areas inaccessible to the Brinell and do so without special tooling, a big plus.

Additionally, with hardness calculated automatically and shown on a clear read out, there is no room for any human error or inconsistency.

Used for both Rockwell and Rockwell Superficial, the 8150 LK has greatly widened the range of assemblies and components that can be hardness tested with precision and confidence at McConnel's factory.

It joins the Brinell system in making random tests to BS EN standards on specimens ranging from tools, gears, hubs, forgings and castings to incoming steel supplies.

McConnel, which has the Queens award for Technology, is delighted with the performance, seeing the upgrade in quality control as important to its continued success in world markets.

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