GB/T 6404-1986
Determination of sound power level for noise emitted by gear units (English Version)
- Standard No.
- GB/T 6404-1986
- Language
- Chinese, Available in English version
- Release Date
- 1986
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2006-04
- Replace By
- GB/T 6404.1-2005
- Latest
- GB/T 6404.1-2005
- Scope
- In order to use a uniform method to measure the noise of the gear unit, this standard specifies the method for the determination of the sound power level of the gear unit. The data measured by this standard can be used to evaluate and compare the noise of gear units for power transmission. In general, gearing can only be part of a machine, so it is part of the overall sound system. In addition to the gear unit, the sound generating system also includes the prime mover, working machine, accessories, foundation and acoustic environment, all of which may have an impact on the noise level of the measured gear unit. The gear manufacturer should ensure that under the specified test conditions, the noise level of the gear unit is not higher than the value stipulated in the contract or agreed upon. This standard is applicable to the determination of the A sound power level of the gear unit at the factory test site that meets the regulations (that is, the environmental correction value K2≤3dB). According to this standard, the frequency band sound power level, directivity index and time-varying sound pressure level can also be determined (see Appendix B, C and D). Use this standard to determine the standard deviation of the gear unit sound power not greater than the requirements in Table 1.
GB/T 6404-1986 history
- 2005 GB/T 6404.1-2005 Acceptance code for gear units.Part 1:Test code for airborne sound
- 1986 GB/T 6404-1986 Determination of sound power level for noise emitted by gear units
