What is a surface plate?

The surface plate is a flat plane plane used as a reference to determine whether other objects are exactly flat and straight. Surface pads are usually used in the production industry, although meteorological and optical applications exist for tool measurements. Most surface boards are made of cast iron or granite, although some boards are made of glass or other materials.

Before the middle of the twentieth century, most of the surface plates were cast iron. Cast iron surface boards had a ribbed surface that reduced their weight while maintaining accuracy. As part of the tool industries, cast -iron surface slabs were largely abandoned to change the shape of the thermal voltage plate and a smaller amount of iron metal. If the temperature is not a problem, as in meteorological and optical applications, cast iron is still a preferred material. The fact that cast iron is almost impenetrable light is also particularly suitable for precise optical work.

are currently a chipT -surface pads with a standard in the production industry. Wallace Herman, owner of the memorial and metal shop in the United States, was the first to use granite as a material for surface boards. Its change to granite was the unavailability of metal after World War II. Given that the excess of granite from his tombstone already had a change in granite when the material was quickly caught. Granite surfaces have the advantages that they are non -magnetic and resistant. Today, the granite surface plate usually has a high quartz content for increased durability.

glass surface pads are relatively rare. Glass as material for surface boards was used at a time of metal deficiency, for example during World War II, when the metal was high demand for military weapons. Glass surface pads must be laminated and stiff to prevent them from breaking. These pads are surprisingly durable and although the chip can, they are accurate.

regardless of material should be all surfacesCalibrated plates at least a year to ensure accuracy. Calibration of the surface plate can detect inaccuracies from wear on the board. Wear on surface boards can occur from temperature variations, failure of regular boards or breaking. Chipping also becomes a problem and can cause measurement errors, as well as deformation from excessive or continuous temperature fluctuations. Any inaccuracies found during calibration can be repaired by reconditioning the surface plate.