COLD GALVANISING AEROSOL
METALLISATION RETOUCHING FINISH
Jacques P. TARDIF
Cold galvanizing or Make up ?
The literature on cold-galvanising products is extremely dense. Manufacturers and distributors alike release documentation that is, more often than not, sales-oriented. For economic reasons, the vast majority of these aerosols are packaged using liquefied butane or propane gas. Aside from the hazards of these extremely flammable and explosive gases, with a flash point of -58°C, the concentration of the active galvanising ingredient is very low, at around 20-30%. This results in a low cost price and, accordingly, a low retail price. However, only a small surface area can be treated. The real cost is far from clear. Manufacturers rarely commit on this score, with the more reputable stating coverage of 1.2 m² to 1.8 m². Weighing the aerosol before use is very revealing. The primary function of a cold-galvanising product is to protect against corrosion. There is a standardised method to test the performance of a protective anti-corrosion, as set out in the ISO 9227 and ISO 4623-3 standards. Few manufacturers guarantee the performance of their products, considering that in the majority of cases, users require galvanising products for touch-up work; this is known by professionals as "make-up". Nor do they back up these results through test reports carried out by certified laboratories.
We subscribe to different values.
Non-flammable propellant: 3% (patented packaging process),
active ingredient: 97%, coverage: 10 m² per aerosol, net weight: 522 grams, resistance to ISO 9227 salt spray test: 2808 hours.
Temperature resistance : +550°C.
Dust dry after 4'30 minutes, touch dry after 7 minutes.
Galva Zn+is more than just a zinc paint.It is unquestionably the highest-performing product on the market, in terms of both value for money and protection against corrosion.
TEST RESULTS – SALINE FOG – RI 5 more than 2,800 h
MINUTES OF ANALYSIS BY INTERTEK LABORATORIES (with COFRAC and ISO 17.025 certification)
N°PVA-CHL-R14-0135D-A01 dated 28.07.2014
This expertise report can be sent to you upon simple request, using the contact card
Can be used at the following range: -50°C – +550°C
GALVA Zn+ is solderable
GALVA Zn+ is paintable
Aerosol 650 ml
For jobs at very high heights, it is preferable to use an aerosol with strong hedging power
GALVA Zn+ = 10 m2
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