Cast Iron Surface Plate

Cast Iron Surface Plate is a high-precision benchmark tool widely used in mechanical measurement,workpiece inspection,marking,and assembly.It serves as a flat reference plane for testing the flatness,parallelism,and dimensional accuracy of workpieces,playing an irreplaceable role in precision manufacturing and quality control.

Made of high-quality gray cast iron HT200-HT300,the surface plate undergoes strict heat treatment processes—including high-temperature artificial annealing(600-700℃)and secondary aging treatment.This effectively eliminates internal stress,prevents deformation,and ensures excellent thermal stability and wear resistance,even under long-term use and environmental temperature changes.

The working surface is precision-machined(grinding or scraping)to achieve different accuracy levels:Grade 0,1,2,3,and finish-planed grade.Grade 0 and 1 are suitable for high-precision measurement and inspection,while Grade 2 and 3 meet general industrial assembly and marking needs.The surface is smooth and free of defects,with optional T-slots or mounting holes for clamping workpieces conveniently.

Its bottom adopts a reinforced rib structure(grid or well-type)to enhance overall rigidity and load-bearing capacity,ensuring no deformation under heavy loads.Widely applied in machinery manufacturing,auto parts,aerospace,and metrology laboratories,it is a durable,cost-effective basic precision equipment.Regular cleaning and anti-rust maintenance can extend its service life significantly.