- Auto- frettage is done to increase parts (Tubes) fatigue life.
- It is a technique used on thick walled metal tubes to improve the durability of the part by creating a compressive residual stress at the bore.
- A pressure that is high enough to plastically deform the bore of the part but not so high that it bursts the pressure is applied to the inside of the tube.
- Result – After the pressure is removed, the elastic recovery of the outer wall puts the inner wall into compression, providing a residual compressive stress.
- Machine is capable up to 100000 Psi test pressures
- Process Pressure is Selected on the basis of OD/ ID ratio & Mechanical Properties.
High Pressure Hose Assembly
- Hot Impulse Machine:- To check the hose assembly life in hot condition under pressure and oil temperature and ambient temperature
- Static Impulse Machine- To check the hose assembly life in static condition
- Dynamic Impulse Machine- To check the hose assembly life under dynamic condition
- Cold Chamber-To conduct cold bending test of hose as per SAE J 343
- Tensile Tester- To check the tensile load
- Ozone chamber-To conduct Ozone resistance test of hose as per SAE J 343
- Contamination level testing-To check Internal cleaning of hose as per customer standard
- Burst Pressure test Machine:- To conduct the burst test on hose assembly
- Salt Spray chamber:-To check corrosion resistance of components as per ASTM B 117 and DIN 50021
Rubber Testing PVT
- Durability test (PVT, Pressure Vibration Temperature)
- Ambient temp. & inside air temp. : range -40 ~ +250 °C and programmable
- Vibration and impulse : range is programmable.
- Movement : eng. Moving 3-axles data from actual vehicles.
Multilayer Extrusion facility with extrusion capacity of 600,00 mts per month
In-House Testing Facility:
- Durability test
- Low Temp test
- UV test
- Mandrel Insertion
- Weighing balance
- Milipore testing
- Abrasion test
- Life Cycle Test
Low Pressure Tubes
- Flaring process
- Furnace brazing process
- Cnc bending process
- Plc controlled leakage testing
- Crack detection test
- Vibration testing
- Profile projector
- Rockwell hardness tester
- Jet testing machine