Views: 16456 Author: Site Editor Publish Time: 2023-12-22 Origin: Site
In mechanical processing, choosing the right cutting fluid is essential for extending tool life and ensuring high machining efficiency. However, as a formulator or cutting fluid manufacturer, you may find that achieving the perfect balance of cooling and heavy-duty lubrication can be highly challenging, especially when moving away from traditional additives.
To solve this, Ruqinba has engineered a series of next-generation synthetic esters. In this blog, we highlight three of our top-tier lubricant additives designed to significantly upgrade the boundary lubrication and stability of your metalworking fluids (MWF).

Derived from modified vegetable oils, RQB-1612C is a self-emulsifying ester perfectly suited for both semi-synthetic fluids and soluble oils. It is engineered to deliver high lubricity with a strictly controlled low-foam profile.
Its non-corrosive nature makes it the ideal choice for machining non-ferrous metals, particularly aluminum and magnesium alloys.
Self-Emulsifying Ester RQB-1612C
Key Benefits:
Provides excellent interfacial lubrication, significantly reducing Built-Up Edge (BUE) and chip welding.
Enhances workpiece surface finish while minimizing tool wear.
Offers outstanding hard water tolerance and auxiliary rust prevention.
| Appearance | Yellow transparent liquid |
| Specific Gravity (25℃) | 0.998 |
| Kinematic Viscosity 40 (mm²/s) | 450 |
| Acid Value (mg·KOH/g) | 53 |
| Threading Torque Value (Ncm) | 160 |
| Hard Water Resistance (ppm) | 500 |
| HLB Value | 10-11 |
RQB-1516 is a highly advanced synthetic lubricant synthesized from polymeric acid derivatives and polyhydroxy polyethers. It excels in cleaning, wetting, and providing exceptional lubricity in water-based systems.

Key Benefits:
Ultra-Low Foaming: Ideal for modern high-pressure CNC systems.
Unmatched Stability: Highly compatible with cationic settling agents and exhibits excellent tramp oil rejection.
Extreme Hard Water Stability: Surpasses conventional products by remaining stable in water hardness up to 2000 ppm, while also contributing to the fluid's overall biostability.
| Appearance | Amber or reddish-brown transparent liquid |
| Specific Gravity (25℃) | 1.048±0.05 |
| Kinematic Viscosity 40 (mm²/s) | 2500-3500 |
| Acid Value (mg·KOH/g) | 60±10 |
| Threading Torque Value (Ncm) | 180 |
| Hard Water Resistance (ppm) | 2000 |
For formulators looking to replace environmentally restricted EP additives, Polymeric Ester RQB-1425 is the ultimate solution. This eco-friendly, biodegradable, and non-toxic additive is designed for high-performance water-based processing.

Key Benefits:
Heavy-Duty Boundary Lubrication: Forms a uniform, high-strength lubricating film capable of replacing traditional chlorinated paraffins in severe machining operations.
Highly compatible with base oils, easy to emulsify, and provides effective dispersion.
Synergistic Performance: When combined with our Self-Emulsifying Esters, it produces a cutting fluid with superior lubricity, robust corrosion inhibition, and outstanding emulsion stability.
| Appearance | Light yellow turbid liquid |
| Specific Gravity (25℃) | 1.0002 |
| Kinematic Viscosity 40 (mm²/s) | 3200-3800 |
| Acid Value (mg·KOH/g) | 25-35 |
Upgrading your metalworking fluid with the right synthetic esters does more than just improve lubrication; it boosts tool protection, extends fluid sump life, and ensures environmental compliance.
By integrating Ruqinba’s RQB-1612C, RQB-1516, and RQB-1425 into your formulations, manufacturers can easily conquer the rigorous demands of modern metal processing. Embrace these game-changing solutions and experience a measurable difference in your cutting fluid's performance today.
(Contact our technical team for samples and detailed formulation guides.)
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