Centrifugal pump structure is relatively simple, but the movement of liquid in the pump is very complicated, so far can not be completely analytical method to determine the characteristics of the pump under different conditions. Therefore, the centrifugal pump test for the pump design, production and use are of great significance, is to mention the level of pump technology, one of the important measures. In general, centrifugal pump test type sub-type test and factory test two. Centrifugal pump test ─ type test Type tests include: running test, performance test, cavitation test and noise and vibration test. Commonly used in new product testing. (1) Operation Test The operation test shall check the temperature rise of pump bearings and packing, the leakage of pump stuffing box and the general situation of noise vibration. About the seal ring, balance disc, bearing wear, etc. can be inspected after the test. (2) Performance Tests Performance tests are used to determine the relationship between pump head, shaft power, efficiency and flow rate. Centrifugal pumps should measure at least 15% of the maximum flow from the beginning of zero flow. The mixed flow pump, axial flow pump and vortex pump should measure at least 15% of the minimum flow from the fully open valve. Measuring points should be evenly distributed throughout the curve, the centrifugal pump, whirlpool pump more than 13 points, axial flow pump, mixed flow pump more than 15 points. (3) Cavitation test The cavitation test is used to determine the relationship between the critical NPSH and the flow rate. Or to verify that the pump's critical NPSH is less than or equal to the required NPSH. Centrifugal Pump Test - Factory Test The factory test is a test used to check the centrifugal pump performance before leaving the factory. Factory tests are generally only centrifugal pump working within the scope of the small flow point, the provisions of the flow point, the flow point of more than three test points to check the pump head and power.
TCT Hole Saw
Our Tungsten Carbide Tipped Cutters(TCT hole saws) are a superior alternative to conventional Bi-Metal Hole saws. They cut faster, cleaner, and last longer. Say goodbye to burnt out, smoking holesaws. Try a T.C.T. you'll love it.
Tungsten cutters cut through, steel plate, iron, aluminium, copper, cast iron, and most importantly, stainless steel and other tough alloys.
The spring loaded pilot bit ejects the cut slug, saving time. The cutter body then cuts a clean, burr-free hole faster than conventional twist drills or hole saws.
T.C.T. cutters are the standard for electrical construction, transit work and general metal fabrication. The spring on the pilot bit ejects the cut slug.
With normal care, Tool life is significantly longer than other hole cutting tools. Inexpensive resharpening will allow repeated use
Tct Hole Saw,Tct Cutting Disc,Carbide Circular Saw Blade,Tct Hole Saw Cutter
Behappy Crafts (suzhou)Co.,Ltd , https://www.haoyuebehappy.com
