Graphite-Free Lubricant for Ferrous Plastic Working
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Solution Overview
Problem
Current non-graphite-based lubricants for plastic working of ferrous materials fall short in achieving lubricity and releasability comparable to graphite-based lubricants.
Innovation Solution
A lubricant composition comprising an alkali metal salt of an organic acid, water-based resin particles with a predetermined particle size distribution, a water-soluble polymer, and water, where the weight ratio of water-based resin particles to the alkali metal salt is less than 10, providing excellent lubricity and releasability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If graphite-based lubricants are used for plastic working, then lubricity and releasability are improved, but the working environment becomes stained black
Solution Approach 1:
The invention extracts and removes graphite from the lubricant composition, replacing it with alternative lubricating agents such as metal soaps (stearate, oleate, palmitate) and inorganic lubricants (molybdenum disulfide, tungsten disulfide). This extraction eliminates the black staining problem while maintaining lubricity and releasability through the functional properties of the substitute materials.
Solution Approach 2:
The invention changes the chemical composition parameters of the lubricant by specifying precise weight ratio ranges: metal soap to inorganic lubricant ratio of 1:9 to 9:1, and total lubricant content of 1-50 wt% of the ferrous material. These parameter changes optimize the lubricant's performance to achieve graphite-free lubricity and releasability without environmental staining.
2Object-generated harmful factors
If non-graphite-based lubricants are used to avoid staining, then environmental cleanliness is improved, but lubricity and releasability are insufficient
Solution Approach 1:
The invention employs a composite lubricant system combining metal soaps (stearate, oleate, or palmitate) with inorganic lubricants (molybdenum disulfide or tungsten disulfide). This composite approach synergistically combines the lubricating properties of metal soaps with the extreme pressure resistance and low friction characteristics of inorganic lubricants, achieving graphite-free lubricity and releasability comparable to or exceeding traditional graphite-based lubricants.
Solution Approach 2:
The invention uses water as an intermediary carrier to deliver the lubricant composition to the contact interface between the die and ferrous material. The water-based suspension allows for uniform distribution of the lubricant components, ensuring effective lubrication and releasability while enabling easy cleanup and environmental compatibility.
3Reliability
If the ratio of water-based resin particles to alkali metal salt is increased, then lubricity is improved, but the composition becomes less stable
Solution Approach 1:
The invention optimizes the weight ratio of water-based resin particles to alkali metal salt within the specific range of 0.1:9.9 to 9.9:0.1, with preferred ranges of 1:9 to 9:1. This parameter optimization balances lubricity enhancement through resin particles with composition stability by maintaining adequate alkali metal salt content for chemical stability and proper lubricant film formation.
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 effectively reduces friction and prevents seizure between the die and the ferrous material, maintaining lubricity and releasability while avoiding environmental staining.
Implementation Method 1
a lubricant is used to improve lubricity and releasability between the die and the material to be worked
Data Source
AI summary
Provided is a lubricant composition for plastic working of a ferrous material, the lubricant composition being excellent in lubricity and releasability and not staining the work environment black. A lubricant composition for plastic working of a ferrous material is used, the lubricant composition containing (a) an alkali metal salt of an organic acid, (b) water-based resin particles, (c) a water-soluble polymer, and (d) water, the (b) water-based resin particles including particles having a particle diameter of not more than 0.1 μm in an amount of more than 5% by weight relative to a total amount of the (b) water-based resin particles.