09,22,2026 25 views
The SSZ Shock-Swing Sand Screening Machine,also known as the pendulum shock sieve tester,is a specialized laboratory screening instrument designed to analyze particle size distribution of foundry molding sand and other granular materials. Widely adopted in foundry workshops,mechanical manufacturing laboratories,quality inspection departments and university research institutes,it delivers reliable and repeatable particle grading results for casting raw material testing.
Working Principle
Driven by an electric motor,the SSZ machine combines two types of movements simultaneously:horizontal swinging and vertical shocking. The device produces 230 swings per minute with an eccentric swing distance of 12 mm,while the shock mechanism generates 170–175 shocks per minute and adjustable shock amplitude between 1 mm and 3 mm.Under the composite motion of swing and shock,sand samples stacked on stacked standard test sieves are continuously loosened and dispersed. Fine grains pass through the mesh layers step by step according to particle sizes,and coarse particles stay on corresponding sieve surfaces. After a fixed screening cycle,technicians weigh the residual sand on each sieve to calculate the particle size composition of molding sand.
Main Structure
TheSSZ Shock-Swing Sand Screening Machineconsists of a driving motor,main machine body,swing base,shock assembly,control box and sieve holder. Its compact and rigid frame stabilizes the compound swing-shock motion during long continuous testing. The control panel allows operators to set screening time conveniently and automatically stop the machine once the test finishes. The sieve holder can firmly clamp a set of standard laboratory sieves,preventing displacement and sample spillage during shock and swing operations.
Key Advantages
First,the compound shock-swing simulation mimics manual sieving action more closely than ordinary vibrating sieves,which helps reduce particle agglomeration and improves the accuracy of sand grain size analysis. Second,stable mechanical motion ensures excellent repeatability for parallel tests,which is critical for foundry quality control. Third,simple operation and easy sieve loading/unloading lower the threshold for lab technicians. In addition,low noise and stable running performance make it suitable for daily routine inspection.
Applications
Its core application lies in the grain fineness test of foundry molding sand,including silica sand,reclaimed sand and mixed molding materials. Besides foundry industry,it can also be used for particle size analysis of other granular materials in material science research. Accurate sand particle data obtained from the SSZ machine helps foundry engineers optimize sand mixing formulas,control casting surface quality and reduce casting defects such as sand inclusion and porosity.
Conclusion
As standard laboratory test equipment for foundry sand analysis,the SSZ Shock-Swing Sand Screening Machine integrates swing and shock screening into one unit. It provides dependable particle size data for molding sand quality assessment. With stable mechanical performance and user-friendly operation,it remains an essential instrument for casting quality control and granular material research.
If you need,I can shorten it into a 200-word product brief for catalog/Alibaba product page,or adjust it into academic paragraph.
