Why Do Glass and Ceramics Require Specialized Cutting Fluids?

Glass and ceramics are hard and brittle materials that are highly prone to cracking and edge chipping under pressure during machining. The process also generates large amounts of fine dust and abrasive particles. Using the wrong cutting or grinding fluid can lead to surface scratches, tool damage, and coolant tank clogging. Therefore, selecting a cutting fluid with rapid sedimentation, excellent lubricity, and high fluid stability is essential.

Advantages of Fully Synthetic Cutting Fluids

Fully synthetic cutting fluids contain no mineral oil, offering excellent stability, no sticky residue, and clean, eco-friendly performance. They are especially suitable for high-precision materials like glass and ceramics. These fluids reduce spark generation, noise, and unpleasant odors during machining, while also extending coolant life and machine uptime.

Application Challenges & Differences

Unique Demands in Glass Machining

Glass machining is commonly used in optical lenses, camera modules, display panels, and high-precision instrumentation. If abrasive particles are not rapidly settled, they recirculate through the system, causing chipping, surface scratches, and accelerated tool wear. Additionally, hardened sludge buildup in the tank makes cleaning difficult and increases maintenance costs. Therefore, the key requirements for glass cutting fluids are fast settling and sludge stability.

Lubrication Challenges in Ceramic Machining

Although dry machining is common for ceramics, water-based cutting fluids are often used to manage heat and protect tool life. Materials such as zirconia, silicon nitride, and IC ceramic substrates heavily rely on the lubricating performance of the fluid to minimize noise, sparks, and inconsistent machining. Since fully synthetic fluids lack mineral oil, their performance depends entirely on the quality and stability of the additives, making product selection especially critical.

How Sludge Affect Operators and Workshop

Recommended Cutting Fluids: MORESCO GR Series

MORESCO GR-5 – Designed for Glass Machining

GR-5 is a fully synthetic cutting fluid imported from Japan, specifically developed for optical and precision glass machining. It features ultra-low foaming, fast sedimentation, excellent cooling, and antibacterial performance. GR-5 effectively prevents surface scratches, edge chipping, and reduced tool life.

GR-5 is also ideal for machining quartz glass, a material known for its hardness and thermal stability. The fluid's rapid settling and high cooling capacity help prevent stress-induced cracks and improve machining cleanliness.

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MORESCO GR-4 – Designed for Ceramic Machining

GR-4 is a fully synthetic cutting fluid designed for machining high-hardness ceramics. It is suitable for zirconia, silicon nitride, ceramic rings, IC substrates, and more. GR-4 offers high lubricity and excellent stability, significantly reducing noise and the risk of tool cracking.

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