Grinding wheel hardness tester

Zvuk-130 grinding wheel hardness tester operation:
Sound-130Combined with a movable electronic block, connected toPCAnd the measuring frame. The operation of the device is based on resonance control method. The measurement is carried out through a piezoelectric sensor on the measuring platform. Frequency and resonance are filtered and analyzed. The result is displayed on the screen as a natural oscillation frequency（Hz）, sound speed,EThe meaning of modulus, acoustic index, or hardness.

Application:

Small item control (grinding wheels and other diameters)3to250Millimeter objects, different grinding stones, cutting blades of various shapes and sizes, etc;

Ceramic, hard alloy, vitrified, electric wood, and vulcanized rubber (resin) bonded abrasive products;
Articles manufactured through powder metallurgy and other methods.

Zvuk-130 Grinding Wheel Hardness Tester PCCompatibility:
This control device will pass the standardCOMPort connection toPCThe installation is also easy, and you can quickly replace the available onesPCLaptops can also be used in different places, including workshops. You can save it immediately inExcelinPCEvaluate all results in.
The equipment is delivered as a set, including the following items:

Electronic module, through standardCOMPort connection toPC

Calculate and analyze in EnglishCDonNOFThe computer program for spectrum

A measuring frame with two piezoelectric sensors should have items fixed between them

Technical Specifications:

Theoretical basis and instrument of Zvuk-130 grinding wheel hardness tester method
The basis of acoustic non-destructive testing based on measuring natural frequency is the correlation between the elastic constant of the material used to make the product and some physical and mechanical properties (such as hardness, porosity, density, strength, etc.), as well as the usage characteristics and manufacturing parameters of the product.
During the measurement process, determine the natural frequency of a certain vibration of the product based on a known relationship（1）Calculate the converted speed of sound wave propagationClCalculate the required physical and mechanical properties based on the previously obtained correlation:
fi=Fi×Cl（1）
in the formulafi—A certain type of natural frequency,Fi—The shape coefficient related to the shape and size of the product, the type of forced vibration, and the Poisson's coefficient,Cl=(E/p)1/2—Conversion speed of sound wave propagation,E—Normal elastic modulus,p—Density. parameterClIt is an important information parameter that can fully characterize the physical and mechanical properties that determine the use of the product in many cases.
To implement this method, there are two types ofSoundThe natural frequency measuring instrument has been widely used in industry. One is an instrument based on the free vibration methodSound-203Another type is an instrument based on resonance measurement methodSound-107These instruments all have corresponding software and have passed national tests.The only method for detecting similar products such as small grinding wheels, oilstones, grinding heads, ceramics, and hard alloy blades is the forced vibration method using a unique decoding method of the natural frequency spectrum. This method is used inSound-107Implemented in the instrument. There are currently no other similar instruments in use. The new generation currently used in conjunction with modern computersSound 130The instrument has been developed.

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