Sand pressing plate

Sand pressing flat plate,also known as sand pressing platform,is a tool used to inspect the flatness of various parts(using the light gap method),repair various measuring blocks,work cards,measuring tools,optical parts,measurement accuracy,and the flatness of tools for parts.

Sandpress plate is a platform used to check the flatness of various parts and repair the flatness of various small measuring tools and optical tools.

Sanding plate material:high phosphorus,alloy,ductile iron.

Method and steps for verifying flatness of sand pressure flat plates

1.Select the layout form based on the shape and size of the tested flat plate,and determine the number of sections and the span of the bridge slab for each section.

2.Place the bridge deck of the inherent level or reflector on the measured section,move the bridge deck with equal spans and tail connections along the measurement direction,and take readings at each position.

3.When measuring with a spirit level,adjust the measured surface to a roughly horizontal position;When using an autocollimator for measurement,adjust the measured line to be roughly parallel to the instrument's optical axis.

4.Process the data according to the segmented calibration results and calculate the flatness value.

The sand pressing flat plate is manufactured according to JB/T7974-99 standard,and the working surface adopts a useful grinding process,which is used for grinding parts and repairing measuring tools.The surface roughness of the parts ground with this product is Ra≤0.08μM.

Specification of sand pressing plate:100*100 200*100 200*200 300*200 300*300 400*300 400*400 450*400 500*300 500*400 600*400 600*400 600*450 600*500 600*300

There are 14 different specifications of sand pressing plates,which are divided into different levels of 0,1,and 2.