GB/T 33518-2017 in English

GBT33518-2017 Standard Overview

The National Standard of the People's Republic of China GB/T 33518—2017 "Specification for the Inspection and Evaluation of Remanufactured Shafting Components Based on Spectral Analysis" is an important standard formulated for the inspection and evaluation of shafting components. This standard specifies the inspection requirements, power spectrum analysis and evaluation specifications for remanufactured shafting components (hereinafter referred to as components), and is applicable to shafting components such as couplings and expansion sleeves.

Background of Standard Formulation

With the widespread application of remanufacturing technology in the industrial field, the inspection requirements for shafting components are becoming increasingly stringent. This standard was proposed by the National Technical Committee for Standardization of Machine Shafts and Accessories (SAC/TC109) and jointly drafted by Taiyuan Heavy Industry Co., Ltd. and other units, aiming to provide a unified technical basis for the inspection and evaluation in the remanufacturing process.

Interpretation of the main content

1. Inspection requirements

GBT33518-2017 standard covers various inspections of shaft components, including material inspection, processing inspection and assembly component inspection.

2. Power spectrum analysis

The standard specifies in detail the Power spectrum detection method, including torque, frequency calculation and power spectrum analysis. The following are key formulas and analysis points:

• Torque calculation formula: \( T=9~550~P/n \)
• Frequency calculation formula: \( f=n/60 \) and its multiple frequency calculation
• Power spectrum spectrum analysis: Qualified parts must pass modulation and demodulation analysis to determine the natural frequency and error range

3. Failure identification and assessment specifications

The standard specifies a failure identification method based on spectral analysis, including:

• New single frequency component (such as multiple frequency): characteristic frequency of elastomer damage
• Frequency band peak group: mechanical wear or elastomer wear
• Fault degree: determined in combination with the amplitude within the resonant frequency range

Standard framework comparison

The following are GBT33518-2017 and related standards framework comparison table:

Technology evolution and implementation suggestions

GBT33518-2017 reflects the>Remanufacturing technology's technological progress in the field of testing and evaluation. The following are implementation suggestions:

1. Strictly carry out component testing in accordance with standard requirements to ensure data accuracy.
2. Establish a failure database to provide a reference for subsequent remanufacturing.
3. Combined with actual application cases, optimize the testing process and improve testing efficiency.