Granite Four Sided Square Ruler from China manufacturer

Granite Four Sided Square Ruler from China manufacturer,also known as marble square ruler,is a precision marble measuring tool used to detect the straightness,parallelism,and perpendicularity of workpieces.Here is a detailed introduction about it:

Material and Characteristics

Material:natural stones such as"Jinan Green","Mount Taishan Green"and"Mount Taishan Qingbaili"are selected.The main mineral components are pyroxene,plagioclase,a small amount of olivine,biotite and a small amount of magnetite.These stone materials have precise structures,good stability,uniform texture,high strength,and high hardness.

characteristic

High precision and good stability:Made from high-quality underground rock layers that have undergone billions of years of natural aging,the structure is uniform,the coefficient of linear expansion is extremely small,the internal stress completely disappears,it is not easy to deform,and can maintain high precision for a long time.

Wear resistant and corrosion-resistant:With a hard texture and fine crystal structure,it is extremely resistant to wear and has good acid and alkali resistance,and can adapt to various complex working environments.

Non magnetic and non plastic deformation:Made of non-metallic materials,it has basically no magnetic reaction and no plastic deformation.The hardness is 2-3 times higher than that of cast iron materials.When bumped by heavy objects,at most a few pieces of debris will fall off,and the accuracy will not be damaged due to deformation.

High surface smoothness:Made by hand grinding,the surface is smooth and can move smoothly during measurement without any roughness.

Specification and accuracy

Common specifications:200×200×50,250×250×50,300×300×50,350×350×50,400×400×50,500×500×50,600×600×50,800×800×100,1000×1000×100,etc.

Accuracy level:generally divided into 00 level,0 level,etc.,the higher the accuracy,the smaller the error.

purpose

Industrial testing:Used to test the straightness,parallelism,and perpendicularity of high-precision components,machine tool guides,etc.,it is an ideal testing reference surface.

Instrument and meter inspection:plays an important benchmark role in the installation,debugging,and accuracy testing of instruments and meters,ensuring their accuracy and stability.

Precision tool manufacturing:In the manufacturing process of precision tools,it is used to detect and calibrate the accuracy of the tools,ensuring the quality and performance of the tools.

Mechanical parts processing:Assist in the positioning,measurement,and calibration of mechanical parts during the processing,improve the machining accuracy of parts,and ensure the quality of mechanical parts.

Maintenance methods

Handle with care:Although granite rulers will not deform or affect accuracy due to the impact or knocking of hard objects,when hard objects hit their working surfaces,they will drop debris and create pits.Excessive or large pits can affect accuracy,so attention should be paid to handling with care during use.

Regular maintenance:When not in use for a long time,the square ruler should be wiped with special lubricating oil or replaced with edible oil.When used again,it can be wiped dry with a soft cloth.

Cleaning stains:When the surface is contaminated,it is advisable to use a lighter corrosive agent such as lemon juice or vinegar to clean the stains.Do not use soap or baking soda or other materials that are easily damaged by granite rulers to wipe.