Profiled Metal Strip Rolling for Deep Embossing Without Smearing

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Solution Overview

Problem

Existing methods for profiling stainless steel sheets result in smeared designs due to through-impression from the opposite pattern on the back side, limiting the achievable profile depth and effectiveness.

Innovation Solution

A method and device utilizing a rolling stand with rolls having predefinable topographies to produce profiles with depths greater than 250 µm on both sides of a stainless steel sheet, allowing for continuous operation and deep profile creation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the impression depth is increased to create deeper profiles, then the profile depth is improved, but the through-impression from the back side becomes more visible and smears the design

Engineering Contradiction:

Improveprofile depthVSAvoiddesign smearing

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The potential harmful through-impression is converted into a beneficial support function by using the back roll to provide counter-pressure and stability during the deep profiling process, while the smooth surface prevents design smearing

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Adaptability or versatility

If conventional rolling methods are used with adapted patterns on both sides, then both sides can be profiled, but the profile depth is limited to approximately 30 μm

Engineering Contradiction:

Improveboth sides profilingVSAvoidprofile depth

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The key parameter change is using a smooth roll surface on the back side instead of a patterned roll, which allows the profile depth to increase from 30 μm to over 250 μm while maintaining the ability to profile both sides of the metal strip

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the production of metal strips with profile depths exceeding 1000 µm, enhancing flexural strength and allowing for improved rigidity and reduced sheet metal thickness in components.

Implementation Method 1

a metal strip with predefinable material thickness consisting, in particular, of stainless steel is wound up on a coil and guided through a rolling stand containing several rolls, wherein at least the rolls that effectively interact with the metal strip are provided with a predefinable topography, by means of which profiles with profile depths > 250 μm can be produced on both sides of the metal strip

Methodology Applied

Scientific EffectPlastic deformation: Plasticity

Data Source

PatentEP2934782B1Method and use of a device for manufacturing profiled metal strips

Publication Date: 2025.05.28 OUTOKUMPU NIROSTA GBMH

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AI summary

The invention relates to a method for manufacturing profiled metal strips (1, 1'), in which a metal strip (1, 1') with predefinable material thickness consisting, in particular, of stainless steel is wound up on a coil (4) and guided through a rolling stand (W1-W4) containing several rolls (2, 3, 2', 3'), wherein at least the rolls (2, 3) that effectively interact with the metal strip (1, 1') are provided with a predefinable topography (8, 9), by means of which profiles with profile depths > 250 μιη can be produced on both sides of the metal strip (1, 1') depending on the geometry of the topography (8, 9) of the rolls (2, 3), and wherein the metal strip (1, 1') is subsequent to its profiling wound up on a coil (5) and, if so required, subjected to a thermal post-treatment.