Salt spray test machine, cast-wheel hardware corrosion-proof detector

Salt spray test machine, cast-wheel hardware corrosion-proof detector.


Will happen in the castor use many common problems, such as castor rotation is not flexible, castor oscillation is larger, castor bracket corrosion spots and other issues, these problems though not very serious but also can be avoided; Such as corrosion spots on the caster stents and other hardware accessories problems can be avoided, one is to improve the corrosion resistance, 2 it is through the caster stents hardware for testing, to determine the range of values of the corrosion resistance of the product, and tell the customer in the corrosive environment to use in this range.

Castor manufacturers in castor hardware for corrosion detection, usually used equipment is salt spray testing machine, and this kind of method is the most common, the most practical castor castor manufacturers hardware corrosion resistance testing tools; In general, the foot wheel manufacturer will conduct sampling corrosion resistance test after the surface processing of the hardware, such as the foot wheel bracket, etc.

What is the salt spray test machine:

The salt spray test machine is used to detect the corrosion resistance of the tested samples in the way of salt spray corrosion, for example, all hardware of the casters. Salt fog refers to the atmosphere is made up of tiny droplets containing salt dispersion system, which is one of the artificial environment is three series, a lot of enterprise products to simulate ocean surrounding climate cause destructive to product, so the salt spray testing machine application. The salt spray test is divided into two types: neutral salt mist and acid salt fog. The difference is that the standard is different from the test method, which is called "NSS" and "CASS".

Principle of neutral salt spray test machine:

Neutral salt spray test (NSS) testing machine temperature requirements in (35 + 2) ℃, humidity is more than 95%, the fog is 1 ~ 2 ml / 80 cm * h nozzle pressure from 78.5 to 78.5 kPa (0.8 ~ 1.4 KGF/cm2). It is in the salt mist test box, which will contain (5) 0. 5) sodium chloride and pH value of 6.5 ~ 7.2 were used to spray the salt water through the spraying device, and the salt spray was settled to the test piece. After a certain time, the surface corrosion state was observed.

experimental method

Configuration, 5% sodium chloride solution under the condition of test temperature of 36 ℃, continuous casters hardware surface spray for 24 h.

acceptance standard

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If the five gold pieces of casters are treated with zinc and nickel parts, the surface corrosion level is up to the level of GB 6461-2002. Degree of chromium and spray painting up to level 6 is qualified;

Generally salt spray tester can effectively detect the castor hardware corrosion information, so how to avoid in use process to reduce corrosion of castor hardware is users should pay attention to the problem, in addition to the surface for effective maintenance, decrease as far as possible in the corrosive environment is the most effective protective measures.