Cast iron flat plates are an important tool widely used in precision testing, inspection and marking of the machinery industry. In order to extend the service life of cast iron plates and ensure the accuracy of use, scraping and grinding contact spots is an important technical indicator of cast iron plates.

Methods for checking the flatness of the workpiece by the tool edge ruler:

1. There must be no defects such as sand holes, air holes, cracks, slag inclusions, shrinkage, scratches, bumps, rusts and other defects that seriously affect the appearance and use performance.

A smooth plug gauge is a measuring tool used to measure the dimensions inside a workpiece hole. The smooth plug gauge is made into two types: maximum limit size and minimum limit size. Its minimum limit size is called the through end at one end, and the maximum limit size is called the stop end at the other end. The commonly used plug gauge form is shown in the figure, with a cylinder at each end of the plug gauge, with the long cylinder end being the through end and the short cylinder end being

Granite ruler is a precision reference measuring tool made of natural stone materials, which is an ideal reference surface for the inspection of instruments, precision tools, and mechanical parts, especially for high-precision measurement. Measure the straightness and flatness of workpieces and equipment installation, as well as the flatness and straightness of machine tool workbenches, guide rails, and precision work.

Specification of granite slab:

The arc template is a testing tool used to check whether the bending radius of each section of the continuous casting machine meets the design requirements. It is also a key measuring tool to ensure that the continuous casting machine can successfully pull the billet in one go.

Use equal height blocks to support the Type I and Type II straightedge at the standard support marks 2L/9 from both ends of the straightedge, and select the appropriate bridge deck according to the length of the working surface of the straightedge (usually 8-10 steps, with a span between 50 and 500mm); Then place the bridge deck at one end of the ruler and fix the reflector or level on the bridge deck