GB/T 33945-2017 in English

GB/T 33945—2017 Standard Overview

This standard specifies in detail the technical requirements for chromium-zirconium-copper bars for motor commutator segments, including key indicators such as chemical composition, dimensions, mechanical properties and conductivity, and clarifies the test methods and inspection rules.

Product Classification and Brand

Comparison of mechanical properties and conductivity

Implementation suggestions and technology evolution analysis

Selection suggestions:When selecting chromium zirconium copper bars, the application environment, current density and mechanical strength need to be considered comprehensively. For example, TCr0.8 material is recommended for high current applications, as it has better conductivity and tensile strength.

Inspection and quality control:It is recommended that users conduct chemical composition analysis and mechanical property tests in strict accordance with the standards, and use ultrasonic flaw detection technology to detect internal defects. Tables 2 and 3 provide the diameter deviation requirements under different conditions, and special attention should be paid to the distinction between high-precision and ordinary grades.

Technology evolution:In recent years, the conductivity and corrosion resistance of chromium zirconium copper materials have been significantly improved through heat treatment process optimization. Future research directions may focus on microstructure regulation and new alloy development.