  
							  
							
							
							Inspecting Iron Castings by USA DAKOTA 
							Ultrasonic Velocity Gauge 
							
							
							
							According to the international study, and many 
							standards, the ultrasonic velocity though the cast 
							iron and cast steel materials has close relationship 
							with the nodularity, tensile strength, and hardness 
							of the material. Therefore, by the ultrasonic 
							velocity gauge, we could inspect the material 
							quality by large quantity.  
							
							
							
							Moreover, if there is any porosity, shrinkage, and 
							other 
							casting defects inside, the velocity will be 
							abnormal. According to our experience, we could 
							judge the defects types and size. Therefore, we 
							could inspect the inside casting defects by this 
							gauge too. 
							 
							 
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