A salt spray test device capable of constant temperature and humidity

Abstract

The invention aims at providing a novel constant-temperature and constant-humidity salt spray testing device. The novel constant-temperature and constant-humidity salt spray testing device comprises a tank body, a testing chamber, a humidifier, a cooling device, a heater, an evaporator, a water tank, a loop device, a salt spray generator and a drive device. According to the novel constant-temperature and constant-humidity salt spray testing device, the design is reasonable; firstly, with matching of the salt spray generator and the loop device, an object which is in a stereo shape can be wholly and uniformly corroded by salt spray, and in addition, the height of the salt spray generator can be very accurately regulated; secondarily, the whole device has a constant-temperature and constant-humidity structure, the corrosion testing conditions can be carried out in a needed scene and are relatively close to the true environment; in addition, the novel constant-temperature and constant-humidity salt spray testing device also has a good drainage and overflow structure so as to ensure the using safety and has the excellent capability of saving salt spray.

Description

technical field [0001] The invention relates to testing equipment, in particular to a salt spray testing device capable of constant temperature and humidity. Background technique [0002] The salt spray corrosion test chamber is a kind of equipment that uses the simulated salt spray environment to evaluate the corrosion resistance of metal materials and their protective layers or industrial products. It is mainly for the experimenters to simulate an ideal experimental environment for accelerated corrosion. It may take several months or even a year for some products to be corroded in a natural exposure environment, but it takes only a few hours or dozens of hours to achieve similar results in artificially simulated salt spray tests. The artificial simulated salt spray test includes neutral salt spray test, acetic acid salt spray test, copper salt accelerated acetic acid salt spray test, and alternating salt spray test. [0003] But the salt mist testing device (test box) in ...

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Problems solved by technology

[0003] But the salt mist testing device (test box) in the prior art does not have the function of adjusting temperature and humidity, and the salt mist generating device in the prior art is usually compressed air type or ultrasonic type in addition, and the atomization of the former is insufficient, and the latter Otherwise, a uniform and stable airflow cannot be formed, and the part or side of the object to be tested facing away from the salt spray generator cannot get the same amount of fog corrosion.

[0004] In addition, the control of the atomization generator in the prior art generally adopts the method of timed spraying. This method is very practical in the non-constant temperature and humidity test system, and can effectively save the amount of saline solution, but in constant temperature and humidity, especially But in the high temperature mode, because the tiny droplets of salt mist evaporate very quickly, regular spraying cannot guarantee sufficient salt mist

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