HLM300 Arc Process: A TiAlN All-Rounder for Milling, Drilling, and Turning

As manufacturing pursues higher efficiency, lower energy consumption, and robust reliability, coatings must remain stable under high temperature, heavy impact, and long cutting cycles. Built on an arc-deposition route, our HLM300 process for TiAlN has been benchmarked against leading international solutions to deliver stronger process reliability and longer tool life in demanding operations—milling, drilling, and turning alike.

Positioning & Targets

Broad operation coverage: Designed for end mills, indexable inserts, and solid tools across milling, drilling, and turning.

Material versatility: Stable performance in steels, stainless steels, cast irons, and high-temperature alloys; qualified for both wet and dry machining.

Process reliability: Maintains strong film-substrate adhesion and consistent performance under high feeds/speeds and interrupted cuts.

Three Core Performance Pillars (compared with similar industry-leading technologies)

Crater-wear resistance

Through optimized cathodic-arc spots and plasma density, HLM300 improves diffusion/chemical wear resistance at the cutting edge’s hot zone, effectively delaying crater formation and late-stage failure.

High-temperature oxidation resistance

TiAlN forms a stable protective surface layer at elevated temperatures; HLM300’s thermal/biased ion bombardment window further enhances layer density and continuity for high-speed and dry machining.

Wet & dry stability

By mitigating droplets and surface micro-defects, HLM300 enables smoother cutting and heat evacuation with or without coolant, supporting consistent chip flow.

Typical Use Cases

Milling: Side/slot/pocket operations in medium-to-high strength steels and stainless steels, balancing anti-adhesion and edge toughness.

Drilling: Through and blind holes in stainless and heat-resistant alloys, emphasizing oxidation resistance and chip evacuation.

Turning: Semi-finishing and finishing of carbon and low-alloy steels and cast irons, focusing on crater-wear suppression and dimensional stability.

Process Highlights

Arc source & magnetic guidance: Reduced macro-droplets/splash, denser films, and cleaner interfaces.

Bias & temperature synergy: Tunes phase formation and residual stress while safeguarding adhesion—improving hot hardness, oxidation resistance, and crack-propagation resistance.

Batch-to-batch consistency: Window-based control of target chemistry, arc current, and reactive atmosphere to stabilize thickness and hardness.

Value Summary

With the combined strengths of crater-wear resistance, high-temperature oxidation resistance, and dual-mode (wet & dry) stability, the HLM300 TiAlN process delivers a wide operating window and robust reliability across milling, drilling, and turning. It helps manufacturers balance productivity, yield, and cost, offering a comprehensive solution for various challenging machining operations.