Inspection methods for cast iron platforms and measurement methods for flatness

The inspection method for cast iron platforms is to install inspection equipment on the working surface of the tested cast iron flat plate. Without adding weights, touch the measuring head of the comparator with the working surface (for accurate detection, a thin measuring block can be placed between the measuring head and the working surface) and record the reading. Then apply weights to the bracket as mentioned in the previous article, and record the reading of the comparator at this time. The algebraic difference between two readings The value is the deflection value of the cast iron flat plate under rated load. After unloading the load, it is necessary to observe whether the comparator has returned to the reading at no load. If it cannot be restored, the reason should be analyzed and tested from scratch