Test method for gas-tightness of ductile iron pipe
Today,Hebei Haihao Group will give you a detailed description of some knowledge about the air tightness testing methods of ductile iron pipes.
The traditional methods for detecting leakage of ductile iron pipes are bubble method and smearing method.The air tightness detection bubble method of ductile iron pipe is to immerse the workpiece in water,fill the compressed air,and then collect the leaked bubbles in a certain time to measure the leakage.
Ductile iron pipes ISO 2531 DN1200
The gas tightness testing smearing method of ductile iron pipe is to smear soap water on the surface of work piece filled with a certain pressure,which is easy to produce bubbles,and observe the situation of producing bubbles to detect the size of leakage.
These two methods are simple to operate and can directly observe the leakage part and the leakage situation,but it is difficult to collect the whole bubbles due to not knowing the leakage part and several leaks beforehand,which affects the accuracy of measurement;secondly, for large, bulky and complex parts with external surface,the bubbles adhere to the bottom and folds of parts and are not easy to observe;after testing,the workpiece needs to be carried out.Cleaning and drying can not achieve automatic and quantitative leak detection.Therefore,these two methods of detecting air tightness of ductile iron pipes are unable to meet the production demand of high precision and efficiency.
Ductile iron pipes
With the rapid development of computer, electronics and sensing technology,the development of air tightness testing technology for ductile iron pipes will usher in a new development opportunity.In the future,the air tightness testing technology of ductile iron pipes will be further developed in the direction of high precision,high efficiency and intellectualization.
Above is the sharing of the air tightness testing methods of ductile iron pipes by Hebei Haihao Group,hope above can help you.If you want to know more about our products,please feel free to contact us:sales@haihaogroup.com