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Coated column

A coating and coating technology, which is applied in the field of corrosion resistance and corrosion resistance, can solve the problems of delamination risk, embrittlement of hot-dip galvanized coating, etc.

Pending Publication Date: 2022-03-18
CLIPEX IP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot-dip galvanized coatings above this thickness become brittle and risk delamination

Method used

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  • Coated column
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Embodiment Construction

[0105] While this best mode section primarily describes fence posts, it should be understood that this section may apply equally to trellis posts or other steel or alloy post types used in agriculture, where the context permits. It can also be applied to aluminum columns.

[0106] The inventors have found that powder coated or passivated coated (painted) posts do not provide further corrosion protection to the steel substrate once the surface has been breached or breached. The zinc coating (active / sacrificial coating) on ​​the posts is functional from the moment they are placed in the ground. By adding at least one additional non-porous / impermeable film or coating over galvanized columns, their "life-sacrificing action" is delayed from beginning - and probably never will be, provided the impervious barrier is never breached Called to start the sacrifice. By adding a tertiary coating (e.g. zinc-aluminum alloy) to provide even longer sacrificial life, this intermediate coating...

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Abstract

A method of extending the corrosion resistance of a ground anchored region of a steel or alloy fence or grillwork column that has been provided with a sacrificial or non-sacrificial coating along the entire length of the fence or grillwork column, the method comprises the step of applying at least one additional coating to the ground anchoring area in order to extend the corrosion resistance of the ground anchoring area. The at least one additional coating may be a sacrificial coating and / or a non-sacrificial coating.

Description

[0001] related application [0002] This application claims priority to Australian Patent Application No. 2019901806, filed 27 May 2019, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to a method of extending the corrosion resistance and working life of a metal post, such as a steel or alloy fence or trellis post, and to a post with extended corrosion resistance. In particular, in one embodiment, the present invention relates to the corrosion resistance of the ground anchorage area of ​​an elongated steel fence post. Background technique [0004] It is standard industry practice to galvanize agricultural steel fence posts or treat the steel with some other protective coating in order to minimize oxidation and rust and thus prolong the life of the posts. The galvanized post can also be further treated (passivated) immediately after the hot-dip galvanizing process in order to prevent the formation of zinc hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H17/20E04H17/14C23C2/00B05D1/18
CPCC23C28/00E04H17/22C23C2/06C23C2/12B05D1/06B05D1/18B05D1/24B05D7/14C23C24/04E04H17/20E04H17/14E04H17/055C23C28/34C23C28/025C23C28/023A01G17/14C23C4/04E04H17/1426C23C2/08C23C4/06C23C28/42C23C24/08C23C2/34C23C2/36C23C30/005B32B15/043B32B15/08B32B15/012B32B18/00B32B15/01C23C30/00C23C28/3225B32B15/04C23C28/321B32B15/013B32B15/18Y10T428/12944Y10T428/12958Y10T428/12743Y10T428/12722Y10T428/12917Y10T428/12562Y10T428/12569Y10T428/12708Y10T428/12799Y10T428/12556Y10T428/1275Y10T428/12757Y10T428/12937Y10T428/12972Y10T428/12979Y10T428/12854Y10T428/1291Y10T428/12924Y10T428/12764B32B1/00
Inventor A·D·奥尔森
Owner CLIPEX IP LTD