Manufacturing process for a plated product comprising a support part in steel and an anticorrosion metallic coating

a technology of anti-corrosion metallic coating and manufacturing process, which is applied in the direction of manufacturing tools, solventing apparatus, transportation and packaging, etc., can solve the problem that only the technique can be used

Inactive Publication Date: 2004-04-08
LE CARBONE LORRAINE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method achieves a robust bond with improved resistance to stripping and maintains the anticorrosion coating's integrity, offering enhanced durability and thermal conductivity for chemical devices, comparable to or exceeding results from other methods like explosion cladding and knurling.

Problems solved by technology

Knurling, explosion cladding and hot rolling make it possible to obtain very strong part / coating links, but these techniques can only be used when the thickness of the anticorrosion coating is less than 0.7 mm.

Method used

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  • Manufacturing process for a plated product comprising a support part in steel and an anticorrosion metallic coating
  • Manufacturing process for a plated product comprising a support part in steel and an anticorrosion metallic coating
  • Manufacturing process for a plated product comprising a support part in steel and an anticorrosion metallic coating

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Trials 1

[0039] Trials on manufacturing assembly parts were carried out by vacuum brazing using plates in carbon steel and anticorrosion coatings in tantalum. The brazing material was a BNi alloy of the ASTM classification, with a nickel base and containing boron, chromium and silicon.

[0040] The values of resistance to stripping observed during these trials were between those obtained on assembly parts produced by explosion cladding and those obtained on assembly parts produced by knurling.

[0041] The applicant noted that the depth of diffusion of the brazing material in the tantalum element was of the order of 10 to 20 .mu.m, such that the resistance to corrosion of the tantalum coating was not affected by this diffusion.

[0042] Trials 2

[0043] Trials on manufacturing assembly parts were also carried out by vacuum brazing using plates in carbon steel and anticorrosion coatings in either tantalum or titanium. The brazing material had a silver and copper base.

[0044] Bending and punching ...

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Abstract

The aim of the present invention is a process for manufacturing a plated product (1) comprising a support part in steel (2) and an anticorrosion metallic coating (3), characterized in that the anticorrosion coating (3) is fixed on the support part (2) by controlled-atmosphere brazing, in particular by vacuum brazing. The process according to the invention makes it possible to fix solidly an anticorrosion coating with a thickness smaller than 1 mm on a steel plate.

Description

[0001] The present invention relates to devices for the handling, stocking and processing of chemical products intended for the chemical industries. In particular it concerns mixers, processing devices and routing devices capable of handling highly corrosive products, such as concentrated acids or bases. In the present application, the expression "elements of chemical devices" means in particular, and in a collective manner, storage chambers, tanks, heat exchangers, mixers, treatment devices and routing devices.[0002] More specifically, the invention relates to a manufacturing process for plated products comprising at least one support part in steel and an anticorrosion metallic coating, such as elements of chemical devices or assembly parts intended for manufacturing elements of chemical devices.STATE OF THE ART[0003] The chemical industries use numerous elements of chemical devices, which are needed for handling, stocking and / or processing highly corrosive chemical products and wh...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B23K1/008B23K20/00B23K1/19B23K1/20B23K31/02B23K35/30B23K35/32B23K103/18B32B15/00
CPCY10T428/12806B23K1/008
InventorTOTINO, ERNESTHUG, CHRISTIAN
OwnerLE CARBONE LORRAINE SA