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A stainless steel strip coated with a metallic layer

A stainless steel strip and coating technology, which is applied in the field of metal matrix material manufacturing, can solve the problem that there is no special requirement for good adhesion between the contact surface and the coating

Inactive Publication Date: 2010-02-24
SANDVIK INTELLECTUAL PROPERTY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, this means that there are no special requirements for oxide-free contact surfaces and good adhesion of coatings

Method used

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  • A stainless steel strip coated with a metallic layer
  • A stainless steel strip coated with a metallic layer
  • A stainless steel strip coated with a metallic layer

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Experimental program
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Embodiment Construction

[0019] The end product, in the form of a metal-coated strip material, is suitable for load-carrying components and has a low contact resistance at the contact surfaces. Examples of such applications are connectors and switches. By applying a certain amount of push on the spring, the spring will make contact with the surface and close the circuit. Low contact resistance is important at the contact points where current is carried. Stainless steel is an increasingly used material in spring applications. This is due to its attractive combination of high mechanical strength and good formability, allowing rather complex spring shapes to be formed. High-strength stainless spring steels generally have superior mechanical properties compared to non-ferrous materials. In the above regarding spring properties, especially the relaxation strength and fatigue resistance of high strength stainless steel, are critical for a durable spring with constant force throughout its service life. H...

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Abstract

The invention provides a coated high strength stainless steel strip (2) product with a dense and evenly distributed metallic layer (1, 3) on one side or both sides of said strip. Said layer consists of essentially pure gold, copper, nickel, cobalt, molybdenum, silver, tin or tungsten or alloys of at least 2 of these metals, the thickness of said layer is preferably maximally 15 m, the tolerance of said layer is maximally + / - 30 % of the layer thickness, the Cr content of the steel strip substrate is at least 10 % and, and that the layer has such a good adhesion so that the coated steel stripcan be uniaxially stretched to fracture by tensile testing without showing any tendency to peeling, flaking or the like. The metal-coated strip product is suitable for use in applications that are load carrying and must be able to transfer electrical currents to a contracting surface without an electrical conductivity drop at the interface between the surfaces.

Description

Technical field [0001] The present invention relates to a method for the production of metal-coated steel strip products in a roll-to-roll process, in particular the production of coated metal base materials suitable for the production of high-strength stainless steel products. method. This is achieved by applying an electrically conductive coating to the metal strip, as claimed in claim 1 . Background technique [0002] In many electronic devices such as phones, remote controls, computers, etc., springs and other shaped metal parts are used for different functions. Therefore, for electromagnetic shielding (EMS) purposes, springs are used within pads called "finger stocks" in the removable portion of the shielding box. In most of these products, there are currently several different requirements for materials. For springs, this requirement is usually related to mechanical properties such as load-bearing capacity, relaxation strength and fatigue resistance. However, as me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/56C23C14/30C23C14/16C23C30/00C23C28/02
CPCC23C14/30C23C28/345C23C28/023C23C28/322C23C28/321C23C28/021C23C14/562C23C14/16C23C30/00C23C28/02
Inventor 哈坎·霍姆伯格
Owner SANDVIK INTELLECTUAL PROPERTY AB