GB/T 25671-2010High speed steels metal cutting tools with hard coating - Technical specifications (English PDF)

3.1 Hard coating

The tool surface is coated with a hardness greater than 1800HV film layer to improve the wear resistance of the tool coating.

4.1

high-speed steel cutting tools coating is applied by physical vapor deposition (PVD) production method, it can generally be divided titanium-based, titanium-based aluminum and aluminum chrome base three. often

Coating elements of expression in Table 1.

4.2

high-speed steel cutting tools should be based tool varieties, the workpiece and the cutting parameters required to select suitable coating.

5.1 Appearance

5.1.1

before coating the tool should be without any surface treatment, and non-magnetic and rust.

5.1.2

require coating part of the work should not have chipping, burrs, cracks and grinding burn and other defects affecting performance.

5.1.3

Tool no screws or pressure fixing portion.

5.2 surface roughness

The upper limit of the work required surface roughness of the coating is Ra0.8µm.

5.3 dimensions and tolerances

Tool required dimensions and tolerances and geometric tolerances should be considered part of the coating thickness.

5.4 Hardness

Before coating hardness of the tool shall comply with relevant product standards.

6.1 Appearance

6.1.1

coated tools working part should not have to chipping, cracking, magnetic, rust and arc spots and other defects affecting performance.

6.1.2

coat color should be consistent.

GB/T 28253-2025 | GB/T 33524.2-2017 | GB/T 5104-2008 | GB/T 25672-2021 | GB/T 25665-2010 | GB/T 25664-2010 | […]