August 01, 2020
Steel Galvanizing Pot
Reliability, longevity, and performance with Saint-Gobain’s refractory solutions
Steel sheet coating lines for galvanizing or zinc coating represent an important investment with a basis built upon high volume throughput. The heart of such lines is the coating pot, where the steel sheet comes in contact with the molten metal coating. With Mg, Zn or Al being the primary components of these coatings, refractory quality and performance is vital. Utilizing a long-lasting, high quality refractory lining offers the required process control to ensure stable operating conditions with consistent coating quality.
Saint-Gobain Foundry Solution's product offering of NORVIBE™ A 126 A dry-vibrated cement is a signature product in the market for coating pots, pre-melters, and inductor linings. NORVIBE A 126 A dry-vibrated cement is based on an alumina-magnesia mix, and has been utilized with outstanding performance for many years. It is for this reason that NORVIBE A 126 A is a first choices material for many furnace OEM and steel coaters.
In addition to steel coating facilities, NORVIBE A 126 A is also used in cathode melting applications.
Performances
The longevity of NORVIBE™ A 126 A dry-vibrated cement is built on the basis of carefully selected and qualified raw materials. Careful attention is paid to the sourcing and design of all materials, with significant emphasis placed on the Al2O3 fractions. Through careful design considerations, all materials are combined in a precise manner to ensure a dense sintered service layer while also allowing for an appropriate thickness of loose backup layer. These design considerations allow for a reliable and clean working surface that is not prone to dross accumulation.
While the loose backup layer aids in the safety of the lining by preventing crack propagation, which can lead to metal leakage or damage to the core furnace.
NORVIBE™ A 126 A dry-vibrated cement shows outstanding performance properties in contact with zinc, magnesium or any Zn-Mg-Si alloys usually used for coating applications (e.g; Galvalume, Galvanizing). To truly understand the versatility and robustness of dry-vibrated cement NORVIBE A 126 A, it’s performance is unaltered even while in operation with Al-Si alloys, which are considered one of the most demanding alloys as it pertains to refractory life and performance. Dry-vibrated cement VA126 is used in pre-melters (lining for both coreless or inductors) and in the main coating pot (coreless or inductors). The ease of installation of this product provides the installer the ability to ram a homogeneous monolithic body, with consistent density, in coating pots of capacities of up to 300t of molten metal.
As the expected lifetime of such products are supposed to be several years, our product quality itself will not change. Within our value proposition we insure our customers that they can source NORVIBE™ A 126 A over many campaigns without any variation in the quality or properties of the mix; a significant feature which allows for concentration of efforts in other areas of your operations.
As reported by our customers, using dry-vibrated cement NORVIBE™ A 126 A has led to a significant increase in the lifetime of their equipment, reduced refractory material consumption, ease of installation, and increased availability of the equipment. Moreover, the consistency of product performance allows more precise energy and manpower management.
To ensure the best performance, we can provide installation support from installation supervision to full turnkey responsibility of the refractory part (e.g. material, installation, dry-out and on-site management) through our experienced teams.
To ensure the best performance, we can provide installation support from installation supervision to full turnkey responsibility of the refractory part (e.g. material, installation, dry-out and on-site management) through our experienced teams.
We are additionally providing ceramic loop systems to help further maximize the lifetime of equipment, boron nitride coatings to reduce adherence of molten metal and their slags on refractory linings and immersed metal equipment parts, as well as silicon carbide immersion heater tubes.
By using this package of Saint-Gobain refractory solutions, our customers have every asset in their hands to optimize their operations and coating quality.
Write us directly at ceramics.refractories@saint-gobain.com or contact us.
By using this package of Saint-Gobain refractory solutions, our customers have every asset in their hands to optimize their operations and coating quality.
Write us directly at ceramics.refractories@saint-gobain.com or contact us.
