1. Specification: 100*100-3000*6000 (the special specification product can be made according to the drawings).
2. Usage: It is applicable to various inspections and benchmark planes for accuracy measurement. It can be used as the measurement benchmark for machine tool inspection and to inspect the dimension accuracy or running difference with the function of performing precise lineation. It is an inevitable tool during machine manufacturing.
3. Material and processing: The material is high strength gray cast iron HT200-250 (same as GG20-25), and the hardness of working face reaches HB170-240. It goes through twice of man work processing (heat anneal treatment by 600° and vibration seasoning to reduce the internal strength) in order to make the product stable in accuracy and good in grinding resistance.
4. Accuracy: It is in accordance with the procedure of state standard for measurement and inspection, which is divided into four levels of 1-3 |
