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[GB/T 26483-2011] Noise limits of mechanical presses
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GB 26483-2011
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Basic data Standard ID | GB 26483-2011 (GB26483-2011) | Description (Translated English) | [GB/T 26483-2011] Noise limits of mechanical presses | Sector / Industry | National Standard | Classification of Chinese Standard | J62 | Classification of International Standard | 25.120.10 | Word Count Estimation | 6,697 | Date of Issue | 2011-05-12 | Date of Implementation | 2012-01-01 | Quoted Standard | GB/T 23281; GB/T 23282 | Regulation (derived from) | Announcement of Newly Approved National Standards No. 6 of 2011 | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | Summary | This Chinese standard specifies the mechanical press sound power level and sound pressure level of the noise limits. This standard applies to mechanical presses, including various types of open press, closed presses and screw presses. |
GB 26483-2011: [GB/T 26483-2011] Noise limits of mechanical presses---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Noise limits of mechanical presses
ICS 25.120.10
J62
National Standards of People's Republic of China
Noise limits Mechanical Presses
Issued on. 2011-05-12
2012-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
3.1.2,3.1.3,3.2.2,3.3.2 this standard is mandatory, the rest are recommended.
Accordance with the standards GB/T 1.1-2009. Drafting Rules "Standardization Guide Part 1 standard structure and preparation of" given.
The standard proposed by China Machinery Industry Federation.
This standard by the National Forging Machinery Standardization Technical Committee (SAC/TC220) centralized.
This standard was drafted. Jinan Machine Tool Group Co., Ltd., Jinan Foundry and Metalforming Machinery Research Institute Co., Ltd., Qingdao Green forging forging press
Mechanical Co., Ltd., Jiangsu Yang Li Group Co., Ltd.
The main drafters of this standard. Li, Ma Liqiang, DU Yong, Xing Jibai.
Noise limits Mechanical Presses
1 Scope
This standard specifies the mechanical press sound power level and sound pressure level of the noise limits.
This standard applies to mechanical presses, including various types of open press, closed presses and screw presses.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 23281 Forging Machinery noise level measurement method
GB/T 23282 forging machinery noise power level measurement
3 noise limits
3.1 Noise limit open press
3.1.1 open press the sound power level limits
Noise A-weighted sound power level LWA limit open press continuous idling time should not exceed specified in Table 1.
Table 1
Nominal power/kN limit sound power level LWA/dB (A)
≤160 80
> 160 ~ 25 090
> 250 to 63095
> 630 100
3.1.2 open press the noise level limits
Open press in continuous idling noise A-weighted sound pressure levels prescribed position limits LpA shall not exceed the provisions of Table 2.
Table 2
Nominal power/kN SPL limit LpA/dB (A)
≤160 70
> 160 ~ 25 080
> 250 to 63085
> 63088
3.1.3 open press impulse noise limits SPL
When open press load in a single stroke impulse noise A-weighted sound pressure levels prescribed position shall not exceed the limits specified in Table LpAI 3.
table 3
Nominal power/kN pulse SPL limit LpAI/dB (A)
≤250 93
> 250 to 63095
> 63099
3.2 Noise limits Closed Press
3.2.1 Closed Press the sound power level limits
Noise A-weighted sound power level LWA limits Closed Press continuous idling time should not exceed specified in Table 4.
Table 4
Nominal power/kN limit sound power level LWA/dB (A)
≤2500 110
> 2500 ~ 6300115
> 6300120
3.2.2 The noise level limits Closed Press
Closed Press continuous idling noise A-weighted sound pressure levels prescribed position limits LpA shall not exceed the provisions of Table 5.
table 5
Nominal power/kN SPL limit LpA/dB (A)
≤2500 85
> 2500 - 630 086
> 630 087
3.3 Noise limit screw press
3.3.1 screw press sound power level limits
Screw press at a predetermined operating condition of noise A-weighted sound power level LWA shall not exceed the limits specified in Table 6.
Table 6
Nominal power/kN limit sound power level LWA/dB (A)
≤1000 92
> 1000 to 160 094
Table 6 (Continued)
Nominal power/kN limit sound power level LWA/dB (A)
> 1600 - 315 098
> 3150 ~ 6300101
> 6300110
3.3.2 screw press noise level limits
Screw press when the conditions required to operate at a predetermined position of the A-weighted noise pressure level LpA shall not exceed the limits specified in Table 7.
Table 7
Nominal power/kN SPL limit LpA/dB (A)
≤1000 76
> 1000 to 160 080
> 1600 - 315 082
> 3150 ~ 630 085
> 630 090
4 Measurement
4.1 noise level measurement method
Noise level measurement method mechanical presses shall comply with GB/T 23281 of.
4.2 sound power level measurement
Sound power level measurement of mechanical presses shall comply with GB/T 23282 of.
Measurement conditions 4.3 screw press Noise
Screw press operation when used as prescribed norms, the noise should be measured from the lowest position during the upward movement of the slider.
4.4 Noise Measurement Description
4.4.1 factory test only measures the noise level.
4.4.2 The new design or improve the design, technology, materials, new products after the noise level should be measured during the performance test; can then measure the noise
Sound power level to the noise level of conformity assessment basis.
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