Method for producing an Anti-corrosion coating for hardenable sheet steels and an Anti-corrosion coating for hardenable sheet steels

Inactive Publication Date: 2017-11-09
VOESTALPINE STAHL GMBH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0025]The positive effect of the nickel in the layer or as a separately applied electrolytic layer becomes apparent when b

Problems solved by technology

It is known that particularly with the press-hardening method, problems can occur such that at high temperatures, molten zinc experiences interactions with the austenite in the steel material that are not

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing an Anti-corrosion coating for hardenable sheet steels and an Anti-corrosion coating for hardenable sheet steels
  • Method for producing an Anti-corrosion coating for hardenable sheet steels and an Anti-corrosion coating for hardenable sheet steels
  • Method for producing an Anti-corrosion coating for hardenable sheet steels and an Anti-corrosion coating for hardenable sheet steels

Examples

Experimental program
Comparison scheme
Effect test

Example

[0042]The method according to the invention for producing sheet steel components can either be a press-hardening method or a form-hardening method, i.e. a method in which a sheet steel component is heated and then quench-hardened in a tool (form-hardening) or a method in which a blank is shaped and quench-hardened in a single step (press-hardening).

[0043]According to the invention, a boron-manganese steel is used as the steel material for the press-hardening or form-hardening and with regard to the transformation of the austenite into other phases, the transformation can be shifted to lower ranges and martensite is formed.

[0044]In particular the alloying elements boron, manganese, carbon, and optionally chromium and molybdenum are present in steels of this kind as transformation delayers, i.e. as an element that shifts the phase transformation of austenite into martensite to lower temperatures.

[0045]Steels with the following general alloy composition are suitable for the invention (...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for producing an anti-corrosion coating for hardenable sheet steels, wherein at least two metal layers are deposited one after another onto the steel substrate; the one metal layer is a zinc layer or zinc-based layer and the other layer is a layer composed of a metal that forms baser intermetallic phases with Zn or Fe and has a higher oxidation potential than Zn, namely Ni, Cu, Co, Mn, or Mo, or a layer based on these metals; and an anti-corrosion coating for hardenable sheet steels.

Description

FIELD OF THE INVENTION[0001]The invention relates to a method for producing an anti-corrosion coating for hardenable sheet steels and to an anti-corrosion coating for hardenable sheet steels.BACKGROUND OF THE INVENTION[0002]There are currently two common methods for hardening sheet steels and for producing hardened sheet steel components out of sheet steel, in particular vehicle body components.[0003]The two methods share the fact that a steel band is produced from a steel material by means of hot rolling, usually also followed by cold rolling and the steel band is then continuously galvanized. The usual galvanizing method in this case is hot-dip galvanizing in which the steel band is conveyed through a vat of molten zinc; the molten zinc adheres to the steel, the galvanized steel band is usually conveyed vertically from the vat after which the excess zinc is stripped by means of stripping jets, and then the band undergoes a heat treatment as needed. The resulting galvanized steel b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C2/06C21D9/48C21D8/02C21D8/04C23C28/02C23C2/28
CPCC23C2/06C23C2/28C21D9/48C21D8/0478C21D8/0278C23C28/025C23C2/26C25D5/10C25D5/50C21D1/673C23C28/42C25D5/625C23C2/026
Inventor KOLNBERGER, SIEGFRIEDCOMMENDA, ERNST
Owner VOESTALPINE STAHL GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap