CN113192478A - Noise reduction method for bar finishing area - Google Patents
Noise reduction method for bar finishing area Download PDFInfo
- Publication number
- CN113192478A CN113192478A CN202110293341.2A CN202110293341A CN113192478A CN 113192478 A CN113192478 A CN 113192478A CN 202110293341 A CN202110293341 A CN 202110293341A CN 113192478 A CN113192478 A CN 113192478A
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- China
- Prior art keywords
- noise
- cover plate
- damping
- damping layer
- finishing area
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Abstract
The invention relates to the technical field of steel rolling production, in particular to a method for reducing noise in a bar finishing area, which comprises the following steps: 1) determining a cover plate causing resonance in a noise-generated region; 2) and a damping layer is arranged on the bottom surface of the cover plate. The damping layer is a butyl rubber damping plate, and the thickness of the butyl rubber damping plate is 3 mm. Aiming at the phenomenon of noise caused by cover plate resonance, the invention adopts a damping sound insulation and vibration stopping method, the damping layer is arranged on the bottom surface of the cover plate, the damping layer reduces the vibration frequency of the cover plate, and the damping layer has high density, so that the noise transmission can be effectively reduced, the working condition that the noise generated in the bar finishing area production process exceeds the standard is fundamentally solved, and the noise treatment is carried out from the noise source. The noise reduction method improves the field operation environment and protects the health of post workers.
Description
Technical Field
The invention relates to the technical field of steel rolling production, in particular to a noise reduction method for a bar finishing area.
Background
The noise in the finished area of the bar in the steel rolling mill is serious, the influence on the hearing is large after long-term work, and the damage of the noise to the hearing is irreversible, so that the bar belongs to a control point of occupational hazard factors.
During the production of the deformed steel bar, threading and shearing, the vibration generated by collision is transmitted to the cover plate at the natural frequency to cause resonance, and the cover plate is similar to a resonance cavity, so the noise is amplified (similar to a drum) and is about 200 pieces in the whole bar finishing area, and the noise often exceeds 85 decibels and seriously affects the physical and psychological health of post workers.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses a method for reducing noise in a bar finishing area.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for reducing noise in a bar finishing area is characterized by comprising the following steps:
1) determining a cover plate causing resonance in a noise-generated region;
2) and a damping layer is arranged on the bottom surface of the cover plate.
Furthermore, the damping layer adopts a butyl rubber damping plate.
Further, the damping layer is connected with the bottom surface of the cover plate through bonding.
Further, the thickness of the damping layer is 3 mm.
Further, an aluminum plate is arranged on the butyl rubber damping plate.
Compared with the prior art, the invention has the beneficial effects that:
aiming at the phenomenon of noise caused by cover plate resonance, the invention adopts a damping sound insulation and vibration stopping method, the damping layer is arranged on the bottom surface of the cover plate, the damping layer reduces the vibration frequency of the cover plate, and the damping layer has high density, so that the noise transmission can be effectively reduced, the working condition that the noise generated in the bar finishing area production process exceeds the standard is fundamentally solved, and the noise treatment is carried out from the noise source. The noise reduction method improves the field operation environment and protects the health of post workers.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The invention will now be further described with reference to the accompanying description and examples:
referring to fig. 1, a method for reducing noise in a finishing area of a bar includes the following steps:
1) determining a cover plate 1 causing resonance in a noise-generated region;
2) the damping layer 2 is adhered to the bottom surface of the cover plate 1.
The environmental temperature of the bar production site is too high, the cover plate of the cold shear roller way with the highest recording temperature in 10 months measured on site is 63 ℃, and the highest temperature in summer is 80-90 ℃, so in the embodiment, the damping layer 2 adopts a butyl rubber damping plate, and the temperature tolerance of the butyl rubber damping plate is generally 150 ℃.
More preferably, in order to consider frequent vibration in the operation process, the thickness of the butyl rubber damping plate is 3MM, the damping plate with the thickness of 3MM has light dead weight, is not easy to fall off, and has relatively strong adsorption force.
Preferably, in order to make the butyl rubber damping plate have smaller bending degree in the vibration damping process so as to achieve better vibration stopping and noise reducing effects, the butyl rubber damping plate is provided with the aluminum plate, and the aluminum plate can better restrain damping.
In this embodiment, because the back of apron 1 is downwards, the butyl rubber damping panel does not influence the equipment operation on 1 back bonding of clear apron, can also make the damping panel of pasting have good operating mode environment, is difficult for dropping.
The invention adopts a damping sound insulation and vibration stopping method aiming at the phenomenon of noise caused by cover plate resonance, a damping layer is arranged on the bottom surface of the cover plate, the damping layer reduces the vibration frequency of the cover plate, and the noise transmission can be effectively reduced due to the high density of the damping layer, thereby fundamentally solving the working condition that the noise generated in the production process of the bar finishing area exceeds the standard and carrying out noise treatment from a noise source.
After the method is used for noise reduction improvement, the noise in the original production process often exceeds 85 decibels, and the actual measurement after improvement is reduced by 40 percent compared with the original noise. The method improves the field operation environment, thereby better protecting the body health of the post workers.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (5)
1. A method for reducing noise in a bar finishing area is characterized by comprising the following steps:
1) determining a cover plate causing resonance in a noise-generated region;
2) and a damping layer is arranged on the bottom surface of the cover plate.
2. The method of reducing noise in a rod finishing area according to claim 1, wherein: the damping layer adopts a butyl rubber damping plate.
3. The method of reducing noise in a rod finishing area according to claim 1, wherein: the damping layer is connected with the bottom surface of the cover plate through bonding.
4. The method of reducing noise in a rod finishing area according to claim 1, wherein: the thickness of the damping layer is 3 mm.
5. The method of reducing noise in a rod finishing area according to claim 2, wherein: and an aluminum plate is arranged on the butyl rubber damping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293341.2A CN113192478A (en) | 2021-03-19 | 2021-03-19 | Noise reduction method for bar finishing area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293341.2A CN113192478A (en) | 2021-03-19 | 2021-03-19 | Noise reduction method for bar finishing area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113192478A true CN113192478A (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110293341.2A Pending CN113192478A (en) | 2021-03-19 | 2021-03-19 | Noise reduction method for bar finishing area |
Country Status (1)
| Country | Link |
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| CN (1) | CN113192478A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315768A (en) * | 2008-06-26 | 2008-12-03 | 北京市射线应用研究中心 | Sponge plastics perforation and sound absorption board and method for producing the same |
| CN203403925U (en) * | 2013-07-25 | 2014-01-22 | 北汽福田汽车股份有限公司 | Sound absorption structure |
| CN204760019U (en) * | 2015-03-26 | 2015-11-11 | 安徽微威胶件集团有限公司 | Composite damping board based on reclaimed rubber base member |
| CN108595789A (en) * | 2018-04-04 | 2018-09-28 | 上海理工大学 | A kind of constrained damping structure vibration radiation acoustical power hierarchy optimization design method |
| CN110909496A (en) * | 2019-11-06 | 2020-03-24 | 上海理工大学 | Two-stage collaborative optimization design method for constrained damping structure |
| CN111114039A (en) * | 2019-12-20 | 2020-05-08 | 株洲时代新材料科技股份有限公司 | Environment-friendly composite damping plate for vibration and noise reduction and preparation method thereof |
| CN111739502A (en) * | 2020-06-01 | 2020-10-02 | 南京航空航天大学 | Underwater sound absorption metamaterial with damping lining hexagonal honeycomb perforated plate |
| CN112046192A (en) * | 2020-09-18 | 2020-12-08 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction method and composite damping noise reduction device |
-
2021
- 2021-03-19 CN CN202110293341.2A patent/CN113192478A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315768A (en) * | 2008-06-26 | 2008-12-03 | 北京市射线应用研究中心 | Sponge plastics perforation and sound absorption board and method for producing the same |
| CN203403925U (en) * | 2013-07-25 | 2014-01-22 | 北汽福田汽车股份有限公司 | Sound absorption structure |
| CN204760019U (en) * | 2015-03-26 | 2015-11-11 | 安徽微威胶件集团有限公司 | Composite damping board based on reclaimed rubber base member |
| CN108595789A (en) * | 2018-04-04 | 2018-09-28 | 上海理工大学 | A kind of constrained damping structure vibration radiation acoustical power hierarchy optimization design method |
| CN110909496A (en) * | 2019-11-06 | 2020-03-24 | 上海理工大学 | Two-stage collaborative optimization design method for constrained damping structure |
| CN111114039A (en) * | 2019-12-20 | 2020-05-08 | 株洲时代新材料科技股份有限公司 | Environment-friendly composite damping plate for vibration and noise reduction and preparation method thereof |
| CN111739502A (en) * | 2020-06-01 | 2020-10-02 | 南京航空航天大学 | Underwater sound absorption metamaterial with damping lining hexagonal honeycomb perforated plate |
| CN112046192A (en) * | 2020-09-18 | 2020-12-08 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction method and composite damping noise reduction device |
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Application publication date: 20210730 |
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