Its main purpose must be considered for the cycle of calibration. The frequency of calibration depends on the owners’ needs. How Often Do We Need to Calibrate Gauge Blocks?
It cannot be avoided but proper use and care can prolong its life span. When the temperature of an environment where the gauge block is used is not controlled and set to a higher temperature than 20☌ or 63☏, the gauge block expands and loses its accuracy.įrequently used gauge blocks such as workshop gauge blocks wear in a shorter period compared to gauge blocks that are not frequently used. It is usually caused by strong force or abusive use. Proper lapping can correct this issue.ĭents and chipped gauge blocks must be replaced if cannot be repaired.
Sometimes the wrong method of cleaning of gauge block also contributes to scratch.īurrs can occur when the gauge blocks accidentally drop or hit a harder material. This problem can be minimized by proper handling and maintenance. Improper wringing will cause scratches on gauge blocks and also the frequent use of gauge block, especially during workshop use contributes to scratches. Scratch is the most common problem encountered in gauge blocks during and after use. Storing and using gauge blocks in an uncontrolled environment with high temperatures and humidity will contribute to the fast rusting of the metal gauge blocks. Holding metal gauge block without gloves will leave fingermarks since sweat on hands easily reacts to metal. Steel alloy and carbide gauge blocks are likely to rust since it is made up of metal. These are the factors that affect the accuracy of the flatness and length of gauge blocks. The calibration will tell you the deviation that each of your gauge blocks possesses and you could know whether it’s still within the tolerance or not. There are some reasons behind it such as corrosion, scratches, burrs, etc that unfortunately may be invisible by our eyes. After several uses, the gauge blocks’ accuracy may slightly degrade. But, how do we know that our gauge blocks are accurate too? Even, we use them in tool setups as well. As a result, we use them in inspection, verification, and calibration. As we have known that the purpose of using gauge blocks is to check the accuracy of other precision instruments such as micrometers and calipers.
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