Preventing water from entering mobile phones has always been a pain point for users, and mobile phonesCato waterproof testfor a handWaterproof testThe key point is to increase the waterproof function to significantly increase the durability and lifespan of the mobile phone, while allowing users to expand usage scenarios and achieve underwater shooting to improve playability. In addition, supporting random cleaning will greatly improve the cleanliness of the mobile phone and protect user health.Waterproof electronic products have been widely used in countries such as Japan and South Korea and have become an important indicator for consumers to purchase.Doing a good job in waterproof testing is an important basis for ensuring the waterproof ability of the product.

The maturity of the new generation of waterproof technology allows mobile phones to add waterproof functions without being as bulky as three-proof phones. Flagship mobile phones represented by Sony series mobile phones and Samsung flagship S7/NOTE7 have maturely applied the highest level of IP68 waterproof function, and Apple’s latest iPhone 7 also supports it.IP67 waterproof, the watch supports IP68 50m waterproofing. Apple has always been a technology benchmark and is expected to lead the follow-up of domestic brands next year. The waterproofing is also expected to be fully extended from mobile phones and watches to wearable and other 3C products, and it can also make great achievements in many fields such as automobiles and medical care.

Compared with industrial applications, the requirements for all aspects of the waterproof process of mobile phones (design, manufacturing, and testing) are more stringent and demanding, and every part needs to be done.Waterproof test, such as mobile phone card tray waterproof test, mobile phone charging port waterproof test, mobile phone camera waterproof test.From the overall situation, to achieve high-level waterproofing technology (IPX6 or above) requires the cooperation of a variety of processes, and the waterproofing methods are diverse for different parts.Some local processes are quite different from the traditional concept of waterproofing. For example, in the microphone and earpiece parts, due to the need to conduct sound, special processes must be used that can only allow air molecules to pass through, but not water molecules.Generally speaking, the waterproof technology of smartphones adopts different isolation solutions for different parts. First, the outer casing is sealed with silicone rubber (rings, pads) and waterproof adhesive, acoustic waterproofing (waterproof and breathable membrane), and further uses various methods such as circuit board waterproofing (nano material coating) to achieve a high-level waterproof effect.However, this process cannot 100% guarantee the waterproof performance of the mobile phone, so a waterproof testing equipment is needed for the waterproof test of the mobile phone card tray.The more popular ones at present areAir tightness detector, this equipment uses compressed air as the testing medium, and the pressure drop is the testing method for air tightness testing and waterproof testing.Mobile phones and mobile phone card holders are tested for waterproofing using this method.Air tightness testing equipment。

The waterproof test method of air tightness testing equipment is very simple. The following is an introduction using the waterproof test of mobile phone card holder as a case.Air tightness detectorofWaterproof teststep

First make a sealed inspection tooling

then connectAir tightness detectorAir source, power supply and set the parameters of the mobile phone card tray waterproof test, such as test pressure, inflation time, voltage stabilization time, test time, maximum allowable leakage value and other parameters.

Finally, put the mobile phone card holder into the sealing tool and start the air tightness detector to test the waterproofness of the mobile phone card holder. The whole testing process takes about 10 seconds.