平板(平台)Surface Plate 按JB/T7974-99标准制造,产品制成筋板式和箱体式,工作面有长方形,材料HT200,工作面采用刮平工艺,工作面上可加工V形、T型、U型槽和圆孔、长孔等。平板是用于工件检测或划线的平面基准器具。平板安装应调至水平、负荷均匀分布于各支点上,环境温度(20±5℃)使用时应避免振动。 Made according to Standard JB/T7974-99,rib type or case type,rectangle/square/roundworking surface,material:HT200,Working sruface made by skiving,groove V/T/U shape and hole of long-round shape can be made at the surface of the plate.The surface plate is a plane standard equipment used for testing ana drawing of work pieces on it.The surface plate shall be adjusted to horizontal position and loaded evenly on each pivot.Environmental temperature 20±5℃,and vibration shall be avoided when using.
铸铁研磨平板(JB/T7974-99)(单位:块) 按JB/T7974-99标准制造,工作面用研磨工艺用于制作的研磨,量具修理,用本产品研磨后的制件表面粗糙度Ra≤0.08μm。 Made according to Standard JB/T7974-99,working surface made by skiving,used for rubbing of workpiece and repairing of measuring tools.The surface roughness of workpiece after wubbing on this plate can reach Ra≤0.08μm.