Zinc aluminum magnesium square tube in the photovoltaic industry application advantages

With the rapid development of the global economy and the increasing number of construction projects, the development of highly corrosion-resistant coating plate has been the goal of the coating workers, on the basis of galvanization, adding Al, Mg, Ni, Cr and other alloying elements, zinc-aluminum-magnesium plating by the incipient zinc phase, zinc/zinc-magnesium binary eutectic and zinc-aluminum-magnesium ternary eutectic phase, thus making the surface of the plate to form a layer of dense, effective prevention of corrosion factor penetration of the Barrier, greatly improving the material performance corrosion resistance, zinc-aluminum-magnesium alloy materials in the photovoltaic stent more obvious advantages.

Zinc aluminum magnesium square tube compared to the traditional hot-dip galvanized square tube, its corrosion resistance, self-repairing performance is greatly enhanced to help extend the service life of the stent, zinc aluminum magnesium square tube applied to photovoltaic stent advantages are very significant. Zinc aluminum magnesium square tube of zinc aluminum magnesium coating is a main component of zinc, in addition to aluminum and magnesium content between 1.5 ~ 8% (of which the magnesium content is not less than 0.2%) of the ternary alloy coating.

Zinc aluminum magnesium square tube in the photovoltaic industry application advantages

1, reduce costs, zinc aluminum magnesium materials in the hot-rolled basis through continuous galvanizing pretreatment processing, zinc aluminum magnesium coated plate processing and shaping directly after the project to provide use, shorten the component product processing period, the project duration controllability, and reduce the management of hot-dip post-treatment process required, the cost of labor.

2, reduce pollution, conducive to environmental protection, the abolition of hot-dip zinc production process, can reduce the resulting serious environmental pollution problems, play a positive role in environmental protection; and zinc-aluminum-magnesium plating environmental protection monitoring REACH monitoring, ROHS monitoring, and monitoring of food-contact materials are in line with the qualifying requirements, zinc-aluminum-magnesium products are more in line with the national requirements for green environmental protection.

3, zinc-aluminum magnesium with plating incision section self-repair ability, zinc-aluminum magnesium materials in the use of the process of incision or scratch location near the plating layer gradually formed with zinc hydroxide, alkaline zinc chloride and magnesium hydroxide, etc. Composition of the dense protective film (that is, the white rust) adhesion is good, high densities, low electrical conductivity, can be effective in the outside world of the corrosive medium and the bare metal substrate to separate, so as to prevent the bare incision from further corrosion, and the bare incision of further corrosion. The corrosion of the incision and scratch location has an inhibiting effect. Currently zinc aluminum magnesium material incision and surface neutral salt spray test has reached 4440 hours without red rust.

4, zinc aluminum magnesium material performance is stable, material specifications size is easy to control, easy to standardize the photovoltaic stent, mass production. Zinc aluminum magnesium material with good surface quality, super corrosion resistance, stable performance, good environmental performance and low cost advantages have been used in the photovoltaic industry and has been recognized by many power companies, but also for the community to bring good economic benefits.

Common specifications

Zinc-aluminum-magnesium square tubes are commonly used in indoor photovoltaic sunrooms with specifications of 100*100*2.0*6000mm, 50*100*2.0*6000mm, 40*60*20*6000mm, and the material grade is S350GD+275/m2.