Stainless steel metal hose to do what performance test

Stainless steel metal metric hydraulic hose fittings with flexibility, corrosion resistance, high temperature resistance, tensile resistance etc.. To achieve such a sophisticated quality must have strict production processes control, but also the need for strict performance testing to ensure quality. The following sea island for you under the stainless steel metal hydraulic hose fittings must be what strict performance test before they leave the factory.
1 pressure test
Pressure test is also called the strength test, which belongs to the safety performance index test. The test pressure is 1.5 times the nominal pressure, test pressure medium for pure water, the chloride ion content should not exceed 25ppm. Each product must withstand voltage test. By using manual or electric pressure test pump pressure, pressure observation usually available 1.5--4 times of test pressure range of level 1.5 or above or equivalent efficacy of pressure gauge, pressure test instrument. During the experiment, the specimen is placed at one end of the straight hose, install the plug with the exhaust valve, the other end is connected with the pressure test pump outlet pipe, the water will be injected into the tube, exhaust air, exhaust valve closed, and then slowly increased pressure test pressure to the specified value, holding pressure 5min, check the sample status, failure form has no leakage, damage to parts such as abnormal. Requirements for qualified product does not allow failure form of sign of leakage or damage to parts such as abnormal.
2 air tightness test
Air tightness test is also a safety index test, each require a manufactured products are to be tested. Air tightness test in the nominal pressure, qualified products does not allow leakage phenomenon, air tightness test can be carried out in the pressure test qualified rear. Experiments using dry, clean air, or the need to use nitrogen or other protective gas as the test medium. The pressure device can adopt the compressor, air pressure generating device, the cylinder or cylinder group. Pressure observation usually adopts 1.5 grade above or equivalent measurement precision pressure gauge pressure testing instrument, with a full set of test equipment groove. Test specimen is arranged on one end of the hose plug, and the other end of the air outlet is connected with the pressurizing device, gas pressure equal to the nominal pressure, the specimen immersed in the water tank, remove the adsorbed on the net sleeve on the bubble, when the air pressure is stable after the pressure 10min check for gas leakage test piece.
Stainless steel metal hose is commonly used now do all sorts of equipment signal wire, wire and cable transmission, optical fiber protection, it and people's work life. If the product quality problems, will bring some loss. So rigorous performance testing is indispensable, and must be strictly implemented once found the product flaw, should be dealt with immediately, must not hold fluky mentality.