Caliper is a measuring tool, which is mainly used to measure length and depth. It is measured by the distance between the scribed lines on the main ruler, and it is the main variety of length measuring tools. In order to improve the measurement accuracy, the material of caliper requires small thermal deformation and wear resistance. Generally made of carbon steel, tool steel and stainless steel, the carbon content has certain requirements. Zinc alloy will also be used in areas where the measurement accuracy is not high, and carbon fiber calipers will be used in some special areas, such as the measurement of wanwen jewelry. Let's look at the material of the caliper. 1. What is a caliper?

Caliper is a length measuring tool, which is mainly used to measure the length, inside and outside diameter, depth and other parameters of an object. Simple operation and durability. The universal caliper will be used in conjunction with the data acquisition instrument, and can be directly connected with the caliper for automatic data acquisition, thus improving the measurement accuracy and detection efficiency.

Second, what material is the caliper?

In today's social production, the production of various products is inseparable from the detection of calipers, and calipers with different ranges and accuracy should be selected according to different production requirements. However, no matter what kind of calipers, the material requirements are the same. As a measuring tool, the material requirements of calipers have the characteristics of small thermal deformation and wear resistance. Combining these characteristics, the materials used to make calipers mainly include:

1, standard caliper

Standard calipers are generally made of carbon steel, tool steel and stainless steel. It should be noted that when carbon steel or tool steel is used, the hardness of the main measuring surface is not less than 58HRC；; When stainless steel is used, the hardness of its main measured surface is not less than 52.5HRC. Generally, Cr 13 stainless steel with high carbon content is used (equivalent to 4Cr 13 steel in the national standard).

2, non-standard calipers

Standard calipers are mainly used in fields with high precision requirements. Some calipers with low accuracy can be used in areas with low measurement accuracy. This kind of caliper requires less materials, and ordinary materials can be used, such as zinc alloy and stainless steel, but the carbon content of this stainless steel material will be lower.

3. Special calipers

Carbon fiber calipers are used in some fields of Wanwen jewelry, because compared with metal calipers, this kind of calipers has no hard texture and sharp corners, and it is not easy to scratch objects when measuring, so it is mostly used to measure Wan Wen, jewelry and other valuables.