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Zinc Thermal Diffusion Coating Furnace

19 August 2022

Sistem Teknik closely follows the needs and innovations in the industrial furnace industry all over the world and by concentrating on the coating technologies in its R&D center, the field works continue at full speed. The zinc thermal diffusion is a thermal diffusion coating pro- cess, where metal objects are heated with a zinc-powder mixture of zinc dust and additives in a contain- er. The effort to stop or retard metal- lic corrosion has been ongoing since the refinement of ore into metal. No matter what industry, application, or metallurgical make-up, the corro- sion costs of deteriorating metal is significant. Many coating methods have been used to prevent corrosion and increase corrosion resistance from past to present. However, most of these treatments are coatings that lack of the durability and longevity.

Advantage of Thermal Diffusion Coating Method:

➙ Uniform diffusion coating on all surfaces
➙ Low process temperature
➙ Hard and wear-resistant layer ➙ Good bonding between paints or polymers and substrate

➙ No hydrogen embrittlement.
➙ Thin coating in micron sizes
➙ Environment friendly
➙ The thermal diffusion process increases the elasticity and / or duc- tility of the base material and thus significantly minimizes the risk of micro-cracking.

➙ Thanks to the dry furnace process used in zinc thermal diffusion, there is no risk of hydrogen embrittlement. While a conventional zinc process is merely applied as a layer on the base material, zinc thermal diffusion bonds to the base material where it forms a resilient, zinc-alloy metal- lurgical bond. Thermal diffusion zinc coating has a super corrosion resistant gamma layer, a compact delta layer and a ze- ta layer, each layer forming a zinc iron alloy that is harder and more corrosion resistant than the previous one. The hot-dip galvanized coating has 75% Zn 10% Fe in the gamma phase and the thermal diffusion coating has 50% Zn 50% Fe in the gamma phase. The gamma phase in HDG coating has a hardness of 250 HV and the thermal diffusion coating has a hardness of 605 HV.

 

To find out more about Zinc Thermal Diffusion Coating Furnace visit our magazine now: INDUSTRIAL FURNACES 2. SAYI

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