Highly Tough Cermet for Turning GT/NS700 series

Product catalog summary

Overview: The document discusses the GT/NS700 series, a highly durable cermet for turning applications, highlighting its superior wear and impact resistance. It introduces three main grades: GT720, GT730, and NS730, each designed for specific machining priorities.

Specifications:

GT720: Prioritizes wear resistance, ideal for high-speed finishing of steels and cast irons.
GT730: Offers a balanced approach, suitable for a wide range of cutting speeds with good surface finish and wear resistance.
NS730: Focuses on impact resistance, excelling in thermal and mechanical fracture resistance, providing cost-effective performance.

Technological Features:

New Grain Control Technology: Enhances wear resistance through a uniformly fine-grained structure.
Premium Coat: Improves surface finish and wear resistance.
Fine-Grained Skeleton Structure: Increases toughness and resistance to mechanical and thermal impacts.

Cutting Conditions: Standard cutting speeds vary based on material hardness and type, with specific recommendations for low, medium, and high carbon steels, as well as cast irons.

Chipbreaker Designs: Various chipbreaker types (TSF, ZF, ZM, etc.) are designed for different cutting applications, focusing on reducing cutting forces, improving chip control, and enhancing surface finish.

Performance Tests:

Wear-resistance and impact resistance tests demonstrate the superior performance of GT/NS700 series compared to competitors, with GT730 showing gradual wear and maintaining high-quality surface finishes.
Thermal shock resistance tests highlight the toughness of NS730, particularly in challenging machining conditions.

Conclusion: The GT/NS700 series offers advanced solutions for turning applications, with each grade providing specific benefits in wear and impact resistance, making them suitable for a variety of machining environments.

Comparative Analysis: The document provides a comparative analysis of various cutting inserts used in machining processes, focusing on tool life, chip control, and surface finish. The inserts tested include NS730 TSF, GT720 ZF, NS730 ZM, and GT730 PS, compared against competitor products.

Specifications and Test Conditions:

Workpieces: Medium carbon steel (JIS S45C), high carbon steel (JIS S55C), chromium molybdenum steel (JIS SCM435), and others.
Cutting speeds ranged from 125m/min to 300m/min.
Depth of cut varied from 0.1mm to 1.0mm.
Feed rates ranged from 0.05mm/rev to 0.35mm/rev.
Cutting fluid used was water-soluble type, with some tests using dry cutting.

Key Findings:

NS730 TSF Insert: Demonstrated a 30% increase in tool life compared to conventional grades, with improved chip control and reduced power consumption by 15%.
GT720 ZF Insert: Achieved twice the tool life of conventional cermet grades, maintaining superior surface finish.
NS730 ZM Insert: Provided good surface roughness and satisfactory results compared to competitor B's uncoated insert.
GT730 PS Insert: Offered 50% more tool life and better chip control than competitor's grades, with excellent surface finish.

Recommendations:

Use NS730 TSF for improved tool life and chip control in medium carbon steel applications.
Consider GT720 ZF for applications requiring superior surface finish and extended tool life.
GT730 PS is recommended for applications needing excellent surface finish and chip control.

Contact Information: The document lists contact details for Tungaloy's offices worldwide, including locations in Japan, the USA, Europe, and Asia.

Certifications: Tungaloy Co. Ltd is ISO 9001 and ISO 14001 certified, ensuring quality and environmental management standards.

Highly Tough Cermet for Turning GT/NS700 series

Highly Tough Cermet for Turning GT/NS700 series

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