Bimetallic Strip Production via Particulate Welding

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Solution Overview

Problem

Existing methods for producing cutting tools, such as saw blades and bands, face limitations in material choice and process efficiency due to the requirement for cutting edge materials to be in wire form and the need for high-temperature welding processes, which restricts the selection of materials and increases production costs.

Innovation Solution

A method involving the welding of particulate cutting material between two flat carriers, allowing for continuous production of bimetallic strips with a stable connection, enabling the use of a wide variety of materials and reducing production costs by eliminating wire production costs and simplifying the process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wire form cutting material is used and welded to flat carriers, then a stable connection is achieved, but material selection is limited and production costs increase

Engineering Contradiction:
Improveconnection stabilityVSAvoidmaterial selection flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the physical form parameter of cutting material from wire to powder, enabling a wider range of materials to be used while maintaining connection stability through the welding process. This parameter change resolves the contradiction by allowing material versatility without sacrificing connection reliability.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite structure where cutting material powder is welded between flat carriers, forming a new composite material system. This composite approach enables the use of diverse cutting materials that would not be available in wire form, while the welding process ensures stable connection between the components.

Inventive Principle:
Principle #40Composite materials

2Reliability

If wire form cutting material is used, then connection stability is achieved, but production costs increase due to wire production requirements

Engineering Contradiction:
Improveconnection stabilityVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces expensive wire form cutting material with cheaper powder form cutting material. The powder can be more readily produced and is less costly than wire, while still achieving the desired connection stability through the welding process between flat carriers.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

By changing the form parameter from wire to powder, the patent eliminates the need for wire production processes, thereby reducing manufacturing costs while maintaining connection stability through the welding of powder material between carriers.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If high-temperature welding processes are used, then stable connection is achieved, but material selection is restricted and process complexity increases

Engineering Contradiction:
Improveconnection stabilityVSAvoidprocess complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent changes the form of cutting material to powder, which can be more easily and efficiently welded using simpler processes compared to wire form. This parameter change reduces process complexity while maintaining connection stability and expanding material selection flexibility.

Inventive Principle:
Principle #35Parameter changes

4Strength

If conventional bimetallic strips with welded edge wire are used, then toughness and flexural strength are achieved, but significant material loss occurs during tooth profile machining

Engineering Contradiction:
Improvetoughness and flexural strengthVSAvoidcutting material loss
Core Design Contradiction:
StrengthVSLoss of substance

Solution Approach 1:

The patent performs preliminary action by forming the cutting material in the desired configuration before final tooth profile machining. The powder form cutting material is welded between flat carriers in a way that pre-establishes the material distribution, reducing the need for material removal during subsequent machining operations.

Inventive Principle:
Principle #10Preliminary action

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

This method allows for the continuous production of cutting tools with increased process speed and material flexibility, reducing material limitations and production costs while maintaining high-quality connections without the need for high-temperature, high-pressure processes.

Implementation Method 1

the first and second carriers are welded together along their edges by supplying at least one particulate cutting material

Methodology Applied
Scientific EffectWelding: Welding

Data Source

PatentEP3074166B1Method for producing a precursor material for a cutting tool and corresponding precursor material
Publication Date: 2020.02.26 VOESTALPINE PRECISION STRIP GMBH
  • EP3074166B1 patent drawingFigure 1~6
  • EP3074166B1 patent drawingFigure 7~13
  • EP3074166B1 patent drawingFigure 14~24

AI summary

The invention relates to a method for producing a primary material for a machining tool, in particular a primary material for a saw blade, a saw band, a cutting line, a punching knife or a blade, wherein a first flat carrier (10) is arranged with one edge (11) thereof along an edge (12) of a second flat carrier (13), wherein the first and second carriers (10, 13) are welded together along the edges (11, 12) by supplying at least a first particulate cutting edge material (19, 19a), and the first and second carriers (10, 13) are separated again substantially along the welded joint (24) formed in the above-mentioned manner. The invention also relates to a corresponding flat primary material.