Overview
ISO 4875-2:2006 is an international standard that specifies the characteristics and dimensions of metal-cutting band saw blades. Published by the International Organization for Standardization (ISO), this standard applies to various types of band saw blades designed specifically for cutting metals. It provides detailed specifications ensuring consistency, quality, and interoperability of band saw blades used in industrial and manufacturing settings.
This document is part of a series related to metal-cutting band saw blades, with ISO 4875-2 focusing on the physical and mechanical properties such as blade sections, lengths, tooth spacing, hardness, and flatness requirements. The standard plays a crucial role in harmonizing the design and manufacture of band saw blades worldwide.
Key Topics
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Blade Types and Materials
ISO 4875-2 defines four primary blade categories:
- Carbon steel blades (1% to 1.5% carbon content)
- Bimetal blades with teeth made from a different, typically harder material than the blade body
- Friction blades designed to cut by heat generated through friction
- Composite blades combining carbide teeth bonded to a steel body
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Dimensions and Sections
Detailed dimensions for blade width and thickness are specified for each blade type, including standard sizes ranging from 3 mm to 80 mm in width and thickness from 0.65 mm to 1.6 mm. Accurate blade dimensions allow for proper machine compatibility and optimal cutting performance.
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Tooth Pitch and Configuration
The standard defines tooth spacing with both fixed and variable pitch options, specifying the number of teeth per inch (or per 25.4 mm). This impacts cutting speed and finish quality. Pitch ranges from as fine as 1 mm to as coarse as 33.9 mm, accommodating various metal cutting applications.
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Hardness Requirements
Minimum hardness values are specified for blade teeth and bodies, ensuring durability and wear resistance. For example, carbon steel blades require a tooth tip hardness of 62 HRC, while bimetal blade teeth made of high-speed steel must also meet 62 HRC, with a tougher core.
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Flatness and Tensioning
The standard sets a maximum allowable flatness deviation of 2 µm per millimeter for blade straightness, critical for precise cutting. It also governs the evenness of blade teeth set (avoyage), requiring symmetrical tooth bending to ±0.05 mm.
Applications
ISO 4875-2:2006 is essential for manufacturers, distributors, and end-users of metal-cutting band saw blades in multiple sectors:
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Metal Fabrication
Ensures blades are optimized for cutting ferrous and non-ferrous metals with consistent performance and long service life.
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Automotive and Aerospace Industries
Guarantees blade quality for precision cutting of complex metal components, improving safety and reliability.
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Industrial Machinery and Tooling
Provides standards for band saw blades used in automated saw machines, helping reduce downtime and improve cutting accuracy.
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Standardization and Quality Control
Facilitates compliance and interoperability between global suppliers and machinery manufacturers by adhering to internationally recognized blade dimensions and properties.
Related Standards
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ISO 4875-1: Vocabulary
Defines terms and definitions used in the metal-cutting band saw blade series, complementing Part 2.
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ISO 6507-1: Vickers Hardness Test
Specifies the method for measuring the hardness of metallic materials, used for assessing blade component hardness.
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ISO 6508-1: Rockwell Hardness Test
Describes the Rockwell hardness testing method, applicable for determining the wear resistance of blade teeth and body materials.
For manufacturers and users of metal-cutting band saw blades, ISO 4875-2:2006 ensures consistent blade quality, dimensional accuracy, and optimal material properties, supporting efficient metal cutting operations across industries worldwide. Adherence to this standard enhances blade performance, increases safety, and facilitates global trade of band saw blades.