Granite V-frame

The granite V-shaped frame is made of Jinan blue stone material through mechanical processing and manual precision grinding.It has the advantages of long service life,low deformation,and is suitable for inspection,measurement,marking,and positioning work in the mechanical processing and component manufacturing industries.

The granite V-shaped frame has advantages such as non rusting,non magnetization,unchanging shape,and good quality.Can maintain stability under heavy loads and general temperatures.It is superior to measuring reference parts made of cast iron and steel,and can achieve high and stable accuracy.The granite V-shaped frame produced by our company can still maintain its original accuracy after being stored for one year.The granite material,which has undergone strict physical testing and selection,is finely crystallized and has a hard texture.Due to the non-metallic nature of granite materials,magnetic reactions occur and there is no plastic deformation.

Precision of granite V-frame:Level 000-1

The execution standard for granite V-shaped frame is GB4987-85,which is an ideal tool for detecting cylinders.The form and position tolerances in the table refer to the flatness of the bottom surface and the parallelism of the axis of the V-shaped groove to the bottom surface.If necessary,other surfaces can also be machined with the required precision.

Physical properties of granite V-frame:

Physical properties of granite V-shaped frame:specific gravity:2970-3070kg/m3

Compressive strength of granite V-frame:245-254N/mm2

Elastic wear of granite V-frame:1.27-1.47N/mm2

Expansion coefficient of granite V-shaped overhead line:4.61×10-6/℃

Water absorption rate of granite V-shaped frame:＜0.13%

Shaw hardness:Hs70 or above