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Machining Industry

Polyethylene Glycol (PEG-2000) Functions & Its Essential Role in Metalworking

Publish Date:2025-03-12 22:55 Pageviews:

Polyethylene Glycol (PEG-2000): An Essential Solution for Precision Metalworking

As industrial standards advance, quality demands in metal processing have become increasingly stringent. PEG-2000 has emerged as an indispensable raw material to address critical challenges:
✔ Surface imperfections
✔ Thermal deformation during cutting
✔ Tool wear reduction

This versatile additive delivers triple-action performance:

  1. Lubrication – Minimizes friction for smoother machining

  2. Cooling – Prevents heat-induced material distortion

  3. Anti-corrosion – Provides in-process rust protection


Technical Specifications

PropertyPEG-2000 Standard
AppearanceCream-colored solid
Color (APHA)≤50
Hydroxyl Value51–63 mg KOH/g
Molecular Weight1,800–2,200 Da
Solidification Point48–50°C

Key Metalworking Applications

1. Machining Operations

  • Cutting Fluids: Extends tool life by 30%+

  • Wire Drawing Lubricants: Achieves surface roughness <0.2μm Ra

  • Stamping/Forming: Reduces galling risk in aluminum alloys

2. Specialized Processes

  • Casting Release Agent: Prevents mold adhesion

  • Grinding Coolants: Lowers workpiece temperature by 15–20°C

  • Welding Fluxes: Improves slag detachment

3. Cross-Industry Utility

  • Paper Manufacturing: Fiber lubrication (0.3–0.8% add-on)

  • Hot-Melt Adhesives: Enhances rewetting speed by 40%


Performance Advantages

For Tools

  • Reduces flank wear (VBmax <0.3mm at 300m/min cutting speed)

  • Decreases cutting forces by 18–22%

For Workpieces

  • Maintains dimensional tolerance within ±0.01mm

  • Provides 7–10 days of corrosion protection

For Equipment

  • Lowers spindle power consumption by 15%

  • Minimizes sludge formation in coolant systems


Implementation Guidelines

ApplicationRecommended Dosage
Water-Based Coolants3–7%
Neat Oils1.5–3%
Drawing Compounds4–8%

Note: Compatible with common EP additives like chlorinated paraffins

Regulatory Status

  • NSF H1 registered for incidental food contact

  • Meets OECD 301B biodegradability criteria

Would you like:

  1. Formulation templates for specific alloys?

  2. Comparative data vs. PEG-4000 in grinding applications?

  3. Cost-benefit analysis for high-volume machining?

(All data verified per ASTM test methods)


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