Experimental test of Hikelok twin ferrule tube fittings

Product

Test type

Testing process

Test result

Double ferrule tube fittings

Vibration test

The vibration test is carried out in the X, Y and Z directions of the test piece respectively. The test frequency is between 4 ~ 33hz, and there is no leakage during the test process.

 Pass 

Hydraulic proof pressure test

The test medium is clean water, the test pressure is 1.5 times the working pressure, the pressure holding time is 5min, and the fitting is free of deformation and leakage.

Pass 

Corrosion resistance test

The salt spray test of stainless steel fitting was carried out for 168 hours, and there was no rust spot.

Pass 

Pneumatic proof test

The test medium is nitrogen, the test pressure is 1.25 times the working pressure, and the pressure is maintained for 5min without leakage.

Pass 

Impulse test

The pulse pressure rises from 0 to 133% of the working pressure, and then reduces the pressure to no more than 20 ± 5% of the rated pressure. The sum of a pressurization period and a decompression period is a cycle. After the cycle is not less than 1000000 times, there is no leakage.

Pass 

Dismantling and reassembly test

No less than 10 times of interpenetration and reassembly in each experiment without leakage.

Pass 

Thermal cycle test

Under the working pressure, the test piece shall be kept at low temperature - 25 ℃ for 2 hours, and the test piece shall be kept at high temperature 80 ℃ for 2 hours. From low temperature to high temperature is a cycle, which lasts for 3 cycles. After hydraulic test, there is no leakage.

Pass 

Pull off test

Apply a constant tensile load at a speed of about 1.3mm/min (0.05in/min). At this speed, reach the calculated minimum allowable tensile load value, the ferrule is not separated from the fitting, and there is no leakage and damage in the hydrostatic test.

Pass 

Bending fatigue test

1. The specimen reaches the bending strain value required by F1387 under the rated working pressure,

2. The position from zero change point to the maximum positive strain position, from zero change point to the maximum negative strain position, and from the maximum negative strain to the neutral point is a cycle.

3. Conduct 30000 total cycles on the test piece, and there is no leakage during the test.

Pass 

Bursting pressure test

Pressurize the test piece more than 4 times the working pressure until the tube bursts, and the ferrules are free from falling off and leakage.

Pass 

Rotational deflection test

1. Introduce a bending moment according to F1387 and lock it in place.

2. Pressurize the test piece to a minimum static pressure of 3.45mpa (500PSI).Maintain bending moment and pressure during the test.

3. Rotate the test piece for at least 1000000 cycles at a speed of at least 1750 rpm, and there is no leakage in the hydrostatic test.

Pass 

Over torque test

Clamp the test piece with a suitable tool and rotate the other end until the tube is permanently deformed or displaced relative to the fitting and there is no leakage in the hydrostatic test.

Pass