Aqueous PEG Slurry for Wire Saw Lubrication

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing aqueous fluid compositions for abrasive slurries, such as those used in wire saw cutting, face issues with poor cooling performance, high viscosity leading to increased drag forces and breakage of cut pieces, and costly disposal challenges, particularly with mineral oil and glycol-based solutions.

Innovation Solution

A fluid composition comprising polyethylene glycol and water, with a minimum 10 vol % water content, which can include viscosity modifiers, activators, and rust inhibitors, to enhance lubrication, heat dissipation, and reduce viscosity, thereby minimizing product breakage and simplifying disposal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If mineral oil is used as the fluid composition, then good lubricating and cutting properties are provided, but poor cooling performance and disposal difficulties occur

Engineering Contradiction:

Improvelubricating and cutting propertiesVSAvoidcooling performance

Core Design Contradiction:

Ease of manufactureVSTemperature

Solution Approach 1:

The invention changes the chemical composition parameters of the fluid from mineral oil to an aqueous solution containing surfactants and corrosion inhibitors, transforming the fundamental properties to achieve both lubrication and cooling performance simultaneously

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite fluid composition by combining water, surfactants, and corrosion inhibitors, where each component contributes specific properties: water provides cooling, surfactants provide lubrication, and corrosion inhibitors protect the workpiece

Inventive Principle:

Principle #40Composite materials

2Temperature

If glycols such as PEG are used as the fluid composition, then some benefits over mineral oil are achieved, but high costs and disposal problems occur

Engineering Contradiction:

Improvecooling performanceVSAvoidcost and disposal complexity

Core Design Contradiction:

TemperatureVSQuantity of substance

Solution Approach 1:

The invention uses water as the base fluid, which is inexpensive and easily disposable, replacing expensive glycols while maintaining cooling performance. The aqueous solution can be easily refreshed and does not require specialized disposal procedures

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention changes the base fluid from glycol to water, fundamentally altering the cost and disposal characteristics while adding surfactants to maintain the necessary lubricating properties

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If high viscosity fluid compositions are used, then lubrication is improved, but drag forces increase leading to breakage of cut pieces

Engineering Contradiction:

Improvelubrication qualityVSAvoiddrag forces on wafer

Core Design Contradiction:

Ease of manufactureVSForce

Solution Approach 1:

The invention changes the viscosity parameter by using an aqueous base with surfactants, achieving optimal lubrication with lower viscosity compared to mineral oil or glycol-based fluids, thereby reducing drag forces on the wafer

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

The composition provides improved lubrication and cutting properties, reduced viscosity to minimize breakage, and cost-effective heat dissipation, enabling efficient machining with reduced drag forces and easier disposal options.

Implementation Method 1

enhanced heat dissipation properties

Methodology Applied

Scientific EffectEvaporation: Evaporation

Implementation Method 2

enhanced heat dissipation properties

Methodology Applied

Scientific EffectConvection: Convection

Implementation Method 3

reduced viscosity to minimize breakage

Methodology Applied

Scientific EffectViscosity reduction through mixing:

Data Source

PatentUS7690968B2Aqueous fluid compositions for abrasive slurries, methods of production, and methods of use thereof

Publication Date: 2010.04.06 FIVEN NORGE AS

AI summary

Aqueous slurry compositions for use in loose-abrasive machining processes, particularly aqueous abrasive slurries for use in wire saw processes. These aqueous slurry compositions comprise abrasive particles uniformly and stably dispersed in lubricant, which comprises a combination of a vehicle and water, particularly PEG and water.