Water soluble semi-synthetic cutting fluid F6-55

RLT-F6-55 Water Soluble Semi-Synthetic Cutting Fluid – Low Foam Biostable CNC Coolant

Most standard semi-synthetic cutting fluids suffer from severe foaming in automated production lines, rapid bacteria breeding causing stench & frequent fluid replacement, uneven rust protection between aluminum and cast iron, and flocculation when mixed with tap hard water. ROLITOM RLT-F6-55 water-soluble semi-synthetic cutting fluid is custom-formulated to eliminate all these common workshop troubles, fully compliant with global environmental and occupational health standards.

Unlike generic soluble coolants filled with harmful additives, RLT-F6-55 uses premium EP lubricants and multi-metal anti-rust compound additives, with zero heavy metals, sodium nitrite, phenols and toxic substances. It balances extreme pressure lubrication, rapid cooling, long-term anti-corrosion and ultra-low foam performance, perfectly matching conventional machine tools and fully automatic flexible machining production lines.

Whether you run small job shops or large-scale CNC mass production, this transparent semi-synthetic coolant cuts down your fluid maintenance cost, extends tool lifespan, and upgrades workpiece surface finish simultaneously.

Unique Competitive Advantages

1. Premium Extreme Pressure Lubricity, Reduce Tool Wear Rate

   Specialized EP lubricant additives form a protective oil film on cutting contact surfaces during turning, milling and grinding. Friction and thermal abrasion are greatly reduced, cutter service life is extended by 15%-25% compared with ordinary semi-synthetic fluid, delivering mirror-grade smooth surface finish for precision parts.

2. Industry-Leading Defoaming System, No Foam Overflow On High-Speed Equipment

   Passed GB/T 6144 defoaming test: foam height ≤2mL after 10 minutes static standing. Scientific surfactant formula restrains foam generation fundamentally, even under high-pressure coolant circulation of automated machining centers, no overflow mess to interrupt production.

3. Strong Hard Water Tolerance, Stable With Ordinary Tap Water

   No flocculation, precipitation or emulsion breakdown when diluted with regular tap water of medium-high hardness. Shops without deionized water equipment can directly deploy this product to cut water treatment expense.

4. Dual Anti-Rust & Multi-Metal Corrosion Resistance

   Dual protection system separates ferrous and non-ferrous metal protection: It achieves Grade 0 zero-rust performance for cast iron under JB/T 9189-2016 standard (24h single piece / 8h laminated piece at 35℃, RH＞95%); qualified 24h steel disc, 8h red copper & LY12 aluminum corrosion test at 55℃, no discoloration or oxidation on aluminum alloy and copper parts.

5. Long Biostability, Low Comprehensive Production Cost

   High-efficiency biological stabilizer suppresses bacteria and mold reproduction for months, less fluid replacement frequency, fewer waste fluid discharge, lower workshop chemical consumption and waste disposal cost.

Applicable Materials & Machining Operations

Compatible Workpiece Metals (Ferrous & Non-Ferrous Universal)

1. Non-ferrous: Aluminum alloy, LY12 aluminum, red copper

2. Ferrous: Cast iron, carbon steel, alloy steel, die steel

Supported Machining Processes

Turning, Milling, Drilling, Surface Grinding

Suitable Production Scenarios

Conventional single machine tools, CNC machining centers, automated flexible production lines, light precision finishing, heavy load rough cutting.

Typical Physical & Chemical Properties 

Recommended Dilution & Usage Guide

Step-by-Step Preparation Method

1. Pre-cleaning: Fully wash machine tank, circulation pipeline to remove old residual fluid, oil sludge and bacterial colonies before new fluid filling, avoid cross-contamination affecting service life.

2. Dilution sequence: Under continuous stirring at room temperature, slowly pour RLT-F6-55 concentrate into water (concentrate to water, reverse order causes unstable emulsion). Tap water or deionized water are both acceptable.

Working Concentration By Machining Load

1. Light load grinding / precision finishing: 5% ~ 7% mass fraction

2. Heavy load cutting / alloy steel rough machining: 8% ~ 10% mass fraction

FAQ

Q1: Can RLT-F6-55 be used for aluminum alloy high-speed grinding?

A: Yes. It contains special aluminum corrosion inhibitor, no black spot or discoloration on LY12 aluminum after 8h constant temperature immersion, ideal for aluminum precision grinding.

Q2: Does this cutting fluid produce massive foam on automated CNC production lines?

A: No. Ultra-low foam formula passes GB/T 6144 defoaming test, foam volume is controlled below 2mL, no overflow even under high flow circulation.

Q3: Is nitrite contained in RLT-F6-55? Any harmful heavy metals?

A: Nitrite test result is not detected; formula excludes heavy metals, phenols and toxic substances, meets international workshop health & environmental protection regulations.

Q4: Can I mix it with hard tap water directly?

A: Supported. Strong hard water tolerance avoids flocculation and sediment, no need extra water softener for general machining workshops.

Q5: What standard supports its cast iron anti-rust performance?

A: It complies with JB/T 9189-2016 standard, reaching Grade 0 zero rust result under 35℃, RH＞95% high humidity test for 24h single cast iron sheet and 8h laminated sheet.

Q6: How long can the working fluid last without replacement?

A: Excellent biostability inhibits bacterial growth, service cycle is 2-3 times longer than ordinary semi-synthetic cutting fluid under normal maintenance.