Stainless Steel Balancing Weight Composition for Wheel Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing balancing weights made from lead and traditional materials face issues such as environmental harm, corrosion, accuracy problems, and manual application errors due to insufficient flexibility and adhesive strength, particularly when applied to vehicle wheels.
Innovation Solution
A balancing weight composition comprising stainless steel powder and a resin base with a specific ratio of polyester-based engineering plastic, epoxy resin, and ionically cross-linked elastomer, which is extrusion-molded to provide improved physical properties, extrudability, and adhesive strength, allowing for automatic application and reduced unit weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lead (Pb) is used as balancing weight material, then weight and balance correction capability are improved, but environmental harm and corrosion resistance deteriorate
Solution Approach 1:
The invention changes the material composition parameters by replacing lead with a composite system of zinc base alloy (5-20 wt%) and high-density filler (70-90 wt%), adjusting the density and mechanical properties to achieve comparable balancing capability without lead's harmful effects
Solution Approach 2:
The invention uses a composite material system combining zinc base alloy with high-density fillers (stainless steel, tungsten, zinc oxide) to create a balancing weight material that achieves the required density and mechanical properties while eliminating lead's environmental harm and corrosion issues
2Ease of manufacture
If tape-type adhesive is applied to curved surface of vehicle wheel, then balancing weight can be adhered, but adhesive strength and reliability deteriorate due to interface separation and peeling
Solution Approach 1:
The invention changes the adhesive from tape-type to hot-melt adhesive with specific glass transition temperature range (-50°C to 0°C), modifying the adhesive parameters to achieve better low-temperature flexibility and bonding strength on curved surfaces
Solution Approach 2:
The hot-melt adhesive utilizes phase transition properties, being applied in molten state for easy coating on curved surfaces and then solidifying to provide strong bonding, leveraging the temperature-dependent phase change to solve the application and adhesion contradiction
3Object-affected harmful factors
If thermosetting or thermoplastic composite is used as balancing weight, then environmental friendliness is improved, but extrudability and manufacturing precision deteriorate
Solution Approach 1:
The invention optimizes the molecular weight and composition parameters of the thermoplastic resin (polyethylene, polypropylene, EVA) to achieve appropriate melt viscosity and flow characteristics, enabling excellent extrudability while maintaining environmental friendliness
Solution Approach 2:
The invention creates a composite material system combining thermoplastic resin with high-density fillers, where the resin matrix provides extrudability and the filler particles provide density for balancing capability, solving both manufacturing and functional requirements
4Device complexity
If 5 g unit balancing weight is used, then standardization is improved, but accuracy deteriorates due to insufficient flexibility in weight adjustment
Solution Approach 1:
The invention segments the balancing weight into multiple smaller units or provides continuous weight variation capability within the extruded profile, allowing precise adjustment of balance correction while maintaining standardized production processes
Solution Approach 2:
The invention enables dynamic weight adjustment by varying the extrusion length, profile dimensions, or filler distribution along the extruded balancing weight, providing flexibility in weight customization while using standardized manufacturing methods
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 solution offers excellent corrosion resistance, improved accuracy, and enhanced extrusion flowability, enabling precise and durable balancing weights that can be automatically applied to vehicle wheels without corrosion or detachment, while being environmentally friendly by replacing lead with stainless steel.
Implementation Method 1
an ionically cross-linked elastomer produced by graft-polymerizing an EPDM rubber with a carboxylic acid monomer
Implementation Method 2
extrusion-molded to provide improved physical properties, extrudability, and adhesive strength
Data Source
AI summary
A balancing weight composition with excellent extrudability is provided. More specifically, the balancing weight composition includes a stainless steel and a resin base, wherein the resin base includes a polyester-based engineering plastic, an epoxy resin and an ionically cross-linked elastomer at a suitable content ratio to improve extrusion flowability, flexural strength and adhesive strength of a molded material.