TPT September 2022

T E CHNOLOG Y

In-line solution to help prevent white rust formation on tubes

The problem can be prevented and an adequate protection against oxidation can be provided by applying a good protective lubricant in a uniform way, covering the whole surface homogenously. DieTronic is specialised in the production of spray systems for the automatic and controlled application of Rust Preventive Oil (RPO) on the surfaces of tubes, pipes and profiles. Giovanni Amato, sales director and founder of DieTronic Srl, said: “The special design of DieTronic systems was developed to enhance the lubrication quality, by solving the problems of environmental contamination as well as fluid and energy consumption.” The LCP-Antirust Line is automatic and designed to set the desired protective fluid’s dosage through a touch-screen panel, thus applying the RPO quantity (in g/m 2 ) in a controlled and precise manner. Additionally the system works

ONE of the main challenges when manufacturing galvanised pipes and profiles is to avoid white rust formation during storage and transportation to the stockist or end customer. White rust is a white, powdery substance that can form on the surface of galvanised products. This corrosion forms under certain conditions when zinc is in an environment together with hydrogen and oxygen. White rust is especially likely to form on pipes/tubes and profiles that are packed in bundles for storage with no surface protection. Commonly the emulsion from the mill will be the catalyst of this corrosion because is predominantly water based. Even if the surface of the product is dry at the packing stage it will not be protected since condensation can form due to changes in ambient temperature and/or humidity, both will have the same result, white rust.

proportionally to tube mill speed with fully automatic adjustment of oil application related to any speed adjustments made. As standard configuration, all Antirust Series spray systems are provided with full oil recovery, filtering and recycling to minimise consumption and reduce cost. All operational functions can be set in automatic to reduce any operator input to a minimum. ‘Plug and play’ retractable spray boxes ensure rapid changeover when making produce size changeovers. Oil mist dispersion is managed using a triple filter suction system, which also forms part of the recovery system. White rust is a white, powdery substance that can form on the surface of galvanised products

DieTronic Srl www.dietronic.eu

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SEPTEMBER 2022