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For the worktable of high-precision Coordinate Measuring Machines (CMMs), the preferred material is high-qualision granite (mainly Jinan Black); industrial ceramics can be selected for ultra-high

I. Preferred MaterialJinan Black Granite (Black Biotite Granite, JJG Standard Grade)Natural internal stress fully released, almost no deformation for decadesLow coefficient of thermal expansion, minimal

I. Preliminary Steps: Visual Inspection Quick Screening with Simple Tools (Defects must be aed) II. Precision Inspection: Verification of Compliance with Standards (Most Reliable) III.

I. Situations Where Cleaning Is Required at First SightVisible accumulation of dust and metal powder on the surfaceEspecially powder ulation near guides, edges, and threaded

I. Three Bottom Lines to Remember Before CleaningNever use strong acids or strong basesIncluding oxalic acid, chloric acid, caustic soda, powerful descalers, and rust removers,

I. Cleaning and Surface Maintenance ErrorsUsing strong acids or strong alkalis for scrubbingHydrochloacid, oxalic acid, and strong alkaline cleaners will corrode the granite surface, destroy

Granite Parallel Rule (also known as Marble Parallel Rule) is a high-precision precision measuriol. The core of maintenance lies in preventing impact, corrosion, and temperature/humidity

It can be repaired, and the precision of the granite platform (marble platform) can be restored through professional grinding, which is a very routine operation

The core differences between granite square rulers and cast iron square rulers in precision measurement stem from essential disparitiesr dimensions: material physical properties, precision stability,

In precision granite components, surface grinding is not merely about “smoothing”; it is the core process that determines precision, lifespan, stability, and perform, and it