WO2011009240A1 - 在金属板材制作微孔的方法 - Google Patents
在金属板材制作微孔的方法 Download PDFInfo
- Publication number
- WO2011009240A1 WO2011009240A1 PCT/CN2009/072901 CN2009072901W WO2011009240A1 WO 2011009240 A1 WO2011009240 A1 WO 2011009240A1 CN 2009072901 W CN2009072901 W CN 2009072901W WO 2011009240 A1 WO2011009240 A1 WO 2011009240A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal sheet
- punch
- micropores
- working platform
- metal plate
- Prior art date
Links
- 239000002184 metal Substances 0.000 title claims abstract description 115
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000010008 shearing Methods 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 29
- 238000004080 punching Methods 0.000 abstract description 12
- 240000005528 Arctium lappa Species 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/02—Stabbing or piercing, e.g. for making sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
- B21D31/043—Making use of slitting discs or punch cutters
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
Definitions
- the present invention relates to a method of making micropores in a metal sheet, and more particularly to a method of forming a maximum number of micropores on a metal sheet having a certain unit area.
- the "geometric microporous sound absorbing panel” patent case mainly consists of a metal plate body under the floor layer, and the top surface and the bottom surface of the plate body are respectively concavely connected with a fine multi-curved surface and Fine geometry holes, which use different angles of the cone to create mutual refraction, which contribute to mutual interference and consume aerodynamic kinetic energy, and between the plate and the floor
- the air layer will increase the frictional loss of the sound wave energy to achieve a good sound absorption function.
- the technical problem to be solved by the present invention is to provide a micro hole in the metal sheet.
- the method can form a maximum number of micropores on a metal plate of a certain unit area, so as to be used as a sound absorbing panel and improve the sound absorption rate.
- the technical solution of the present invention is:
- a method for making micropores in a metal sheet, mainly for shearing a sheet having appropriate hardness and ductility by a shearing mold comprising the following steps: A. causing the sheet metal to face the working platform on a working platform The shear edge feed, the first surface of the metal sheet facing the lower surface contacts the working platform, and a partial metal sheet protrudes from the shearing edge of the working platform; B. placing a punch above the shearing edge of the working platform a first position, and a working gap is maintained between the punch and the work platform, the punch being in a direction parallel to the shear edge of the work platform a plurality of successively arranged unit blades; C. the punch applies a shear force toward the work platform; D.
- the metal sheet is bent by the force applied by the punch in the direction of the force applied, and the metal sheet faces the second surface of the punch Corresponding to the action of the unit blade portion, a plurality of dot-shaped continuous arrangement depressions are formed;
- E. the first surface on the metal sheet is subjected to shearing force, and a linear depression is formed along the shearing edge of the working platform;
- F. Deformation of the metal sheet, the dot-shaped continuous arrangement depression of the second surface is continuous with the linear depression of the first surface, and the micro-hole is formed at the intersection of the penetration;
- the punch is reset at the first position, and then parallel to the working platform The direction of the shearing edge is offset by a working distance and moved to a second position; H.
- the sheet metal is re-feeded toward the shearing edge of the working platform; I.
- the punch is in the second position, repeating steps, D, E, F; J.
- the punch is reset in the second position, offset by a working distance in a direction parallel to the shearing edge of the working platform, and returned to the first position to complete a cycle processing.
- the above is controlled by the number of blade portions of the step B unit and the metal sheet of step H.
- the number of the micropores on the metal sheet is between 250,000 and 400,000 square meters per square meter by controlling the number of the blade portions of the step B unit and the re-feeding stroke of the sheet metal of the step H.
- the hardness of the above metal plate is between 8 and 40, and the ductility is between 4 and
- the unit blade portions are arranged in a zigzag manner.
- the above working distance is less than the pitch of the blades of two adjacent units.
- the above working distance is one-half of the pitch of the blades of two adjacent units.
- the above step F further includes the step F1 of controlling the stroke of the punch, so that the dot-shaped continuous arrangement depression of the second surface penetrates with the linear depression of the first surface, and the formed minimum pore width of the micro-hole is smaller than The thickness of the metal sheet.
- the step F further includes the step F2 of controlling the stroke of the punch, so that the dot shape of the second surface is continuously arranged 1HJ and the microhole formed by the line type 1HJ of the first surface is penetrated, and the hole is formed along the line.
- the hole width in the direction is larger than the hole width in the feeding direction of the metal sheet.
- the step F further includes the step F3 of controlling the stroke of the punch, so that the dot-shaped continuous arrangement depression of the second surface penetrates with the linear depression of the first surface, and the formed hole is located in the linear 1HJ trap. The top position.
- a leveling procedure is further included for leveling the first surface and the second surface of the metal sheet.
- a coating process is further included for the metal sheet which has been finished leveling, and a film layer is coated on the first surface and the second surface.
- the unit blade portion continuously arranged in the above step B is controlled to have a saw blade shape.
- the present invention has the following advantages:
- the present invention can produce the largest number of micropores on a metal plate of a certain unit area, thereby greatly saving material and manufacturing costs.
- the invention can produce the most micropores on the metal plate of a certain unit area, so that the sound absorption rate can be improved, the noise can be effectively reduced, and the best noise prevention effect can be achieved.
- the metal sheet made according to the manufacturing method of the invention has the functions of light weight, non-toxicity, fireproof, salt resistance, waterproof gas, high sound absorption rate, long service life, color change and easy cutting and installation, and the main application thereof.
- places with high temperature, high humidity, ultra-clean and high-speed airflow such as construction, construction, air conditioning, machinery, electronics, medical, transportation and other related noise prevention and control industries, it can be a kind of dustproof, fireproof, waterproof and non-toxic. Durable sound absorbing panels.
- FIG. 1 is a flow chart of an implementation step of the present invention
- Figure 2 is a feed movement of the metal sheet of the present invention on the platform, and the punch is in the first position
- Figure 3 is a schematic view showing the distance between the punch in the first position and the movement to the second position
- FIG. 4 is a schematic view showing the shearing force applied to the metal sheet by the punch of the present invention
- FIG. 5 is a schematic view showing the shearing force applied to the metal sheet by the punch of the present invention
- Fig. 6 is a schematic view showing the formation of micropores through the dot-shaped continuous arrangement depression and the linear depression on the metal plate of the present invention.
- Figure 7 is a cross-sectional view showing the continuous micropores formed by punching a plurality of times on the metal sheet according to the present invention.
- Figure 8 is a schematic view showing the formation of a dot-shaped continuous arrangement depression on the second surface of the metal sheet, and the formation of a linear depression on the first surface;
- Figure 9 is a line drawing of a microporous single-layer sound absorbing metal plate prepared according to the present invention as a sound absorption test;
- Figure 10 is a line drawing of a microporous double-layer sound absorbing metal plate prepared according to the present invention as a sound absorption test;
- Fig. 11 is a line drawing of a sound absorbing metal plate and other various types of fine hole type sound absorbing panels and a general flat plate for sound absorption test according to the present invention.
- the preferred embodiment of the present invention R includes the following steps: A. feeding a metal sheet on a working platform toward a shearing edge of the working platform, the first surface of the metal sheet contacting the working platform And a partial metal sheet protrudes from the shearing edge of the working platform; the edge of a working platform 1 is formed with a shearing edge 11 (shown in FIG.
- the metal sheet 2 has a first surface 21 facing downward and a second surface 22 facing upward, and the metal sheet has a hardness HRB of between 8 and 40 and a ductility of between 4 and 30.
- a punch 3 is disposed at a first position Y1 (shown in FIG. 3) above the shearing edge 11 of the work platform 1, and the first position Y1 and the shearing edge 11 are always perpendicular, the punch The vertical direction of the head 3 and the shearing edge 11 of the work platform 1 are maintained with a working gap S (as shown in FIG. 4), and the punch 3 is provided with at least one or more consecutively arranged unit blade portions 31, the units The blade portion 31 is controlled to have a saw blade shape.
- the punch applies a shearing force to the working platform; the punch 3 is vertically biased downward at the first position Y1, and a working gap S is formed between the vertical direction of the punch 3 and the shearing edge 11 Therefore, when the unit blade portion 31 of the punch 3 intersects with the shear edge 11 of the work platform 1, as shown in Fig. 5, a shear force is formed.
- the metal sheet is bent in the direction of the applied force by the force applied by the punch, and the second surface of the metal sheet facing the punch is correspondingly formed by the unit blade portion to form a plurality of dot-shaped continuous arrangement depressions; when the metal sheet 2 is subjected to the After the downward force of the punch 3, the portion of the partial metal sheet 2 which is protruded beyond the shearing edge 11 and is suspended will be bent and deformed along the direction of the biasing force thereof, and the unit blade portion 31 of the punch 3 will be Second surface of the metal sheet 2 near the shear edge 11 On the 22nd, a plurality of dot-shaped continuous arrangement depressions 4 are formed corresponding to the stamping (as shown in Fig. 6).
- the first surface of the metal sheet is subjected to shearing force, and a linear 1HJ trap is formed along the shearing edge of the working platform; since the metal sheet 2 is deformed by the shearing force, the shearing edge 11 is simultaneously abutted.
- the force is formed on the first surface 21 with a linear recess 5 formed thereon.
- the hole width is larger than the hole width of the sheet metal feeding direction.
- the stroke of the punch 3 is controlled such that the dot-shaped continuous arrangement depression 4 of the second surface 22 penetrates the linear depression 5 of the first surface 21, and the formed micro-hole 6 is located in the linear depression.
- the punch is reset at the first position, and then offset by a working distance parallel to the shearing edge of the working platform to a second position; then the punch 3 is raised back to the first position Y1 to reset, The punch 3 is further paralleled along the shearing edge 11 of the working platform 1 by a working distance T, and moved to a second position Y2 (refer to FIG. 3), the working distance T is smaller than two adjacent unit blades.
- the pitch P of the portion 31, and the working distance T is one-half of the pitch P of the two adjacent unit blade portions 31.
- the metal sheet is re-feeded toward the shearing edge of the working platform; then the metal sheet
- the punch is in the second position, repeating the steps, D, E, F; the punch 3 will then repeat the above steps, D, E, F after the metal plate 2 is fed an appropriate distance, and the metal sheet 2
- a plurality of dot-shaped continuous arrangement depressions 4 and linear depressions 5 are respectively formed, and the dot-shaped continuous arrangement depressions 4 and the linear depressions 5 are formed through the micropores. 6 [shown in Figure 8].
- the punch is reset in the second position, offset by a working distance in a direction parallel to the shearing edge of the working platform, and returned to the first position to complete a cycle processing; finally, the punch 3 will rise again to return to the first position.
- the two positions Y2 are reset, and then along the direction of the shearing edge 11 of the working platform 1, and then offset by a working distance T back to the first position to complete the processing of one cycle punching.
- a leveling procedure may be further included for the first surface 21 and the second surface 22 of the metal sheet 2 to be ground or polished. For subsequent processing, the grading process can be conveniently performed.
- a coating process can be performed to cover the metal sheet 2 which has been leveled, and a film layer is coated on the first surface 21 and the second surface 22,
- the film is electrostatically coated with a film thickness of about 20 mic and does not block the micropores 6, thereby preventing scratching, damage, rust, and aesthetics, and prolonging the service life.
- the present invention selects the number of the blade portions 31 of the step B and the re-feeding stroke of the metal sheet 2 of the step H, and selects the hardness HRB of the metal sheet to be between 8 and 40, and the ductility is between 4 and 30.
- the number of micropores 6 is between 80,000 and 450,000 per square meter, or the micro-plate 2
- the metal sheet 2 produced has 400,000 micropores per square meter.
- the test sample is a microporous single-layer sound absorbing metal plate and a microporous double-layer sound absorbing metal plate, wherein the microporous single layer sound absorbing metal plate has a plate thickness of 1.0 mm and a hole diameter of 0.08 mm.
- test temperature is 25 °C and the test humidity is 60%.
- the sound absorption rate of each interval is determined by CNS 9056.
- the test data of the micro-hole single-layer sound-absorbing metal plate is shown in Table 1.
- the line diagram of the sound-absorbing rate test is shown in Figure 9. Shown.
- the single-layer metal plate was tested at 50 mm in the air layer, and the sound absorption rate was as high as 0.76 at the center frequency of 2 kHz; the sound absorption rate was as high as 0.85 when the center layer was at 800 Hz, and the sound absorption rate was as high as 0.85 at the center frequency of 800 Hz; When the center frequency is 500Hz, the sound absorption rate is as high as 0.81; when the air layer is 500mm, and the center frequency is 125Hz, the sound absorption The rate is as high as 0.85.
- test data of the sound absorbing metal plate of the microporous double layer is shown in Table 2, and the broken line chart of the sound absorbing rate test is shown in Fig. 10.
- the microporous double-layer sound absorbing metal plate has a test plate thickness of 1.0 mm, a geometric hole with a hole diameter of 0.08 mm, a test temperature of 25 ° C, and a test humidity of 60%.
- the sound absorption rate of each interval is in accordance with CNS 9056. , tested at a double layer spacing of 50mm, air layer At 50mm, when the center frequency is 400Hz, the sound absorption rate is as high as 0.83; when the double layer spacing is 50mm, the air layer is 100mm, and the center frequency is 1kHz, the sound absorption rate is as high as 0.89; when the double layer spacing is 100mm, the air layer is 100mm When the center frequency is 630Hz, the sound absorption rate is as high as 0.92.
- the present invention is compared with other various types of fine-hole sound absorbing panels and general flat panels.
- the test data is shown in Table 3.
- the line graph of the sound absorption test is shown in Fig. 11.
- the sound absorbing panel A has 40,000 pores per square meter, the thickness of the plate is 0.5 mm, and the minimum aperture of the pores is 0.45 mm; the sound absorbing panel B has 40,000 pores per square meter, and the thickness is 0.5 mm to 0.6 mm.
- the minimum L diameter of the thin L is 0.5 mm to 0.6 mm;
- the sound absorbing panel C has 55555 holes per square meter, the plate thickness is 0.5 mm to 2 mm, the smallest hole diameter is 2.0 mm to 3.5 mm, and the plate has no fine holes, and the plate thickness is between 0.5 mm and 1.0 mm.
- the number of holes of the present invention is up to 400,000 holes per square meter, and when the plate thickness is 1.0 mm and the hole height is 0.1 mm or less, the sound absorption rate can be as high as 0.92 at the center frequency of 500 Hz, and the sound absorption rate is optimal, and the present invention
- the average sound absorption rate (NRC) is 0.7, while the average sound absorption rate of other sound absorbing panels (without back sound absorbing materials) is only 0.5, and the sound absorbing effect of the present invention is much better than the existing porous sound absorbing panels and general flat panels.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/120,466 US8800340B2 (en) | 2009-07-24 | 2009-07-24 | Method of making micro-holes on metal plate |
ES09847475.2T ES2561481T3 (es) | 2009-07-24 | 2009-07-24 | Método para hacer micro-agujeros en placa de metal |
AU2009350309A AU2009350309B2 (en) | 2009-07-24 | 2009-07-24 | Method of making micro-holes on metal plate |
CN200980140802XA CN102439239B (zh) | 2009-07-24 | 2009-07-24 | 在金属板材制作微孔的方法 |
JP2012520884A JP5728477B2 (ja) | 2009-07-24 | 2009-07-24 | 金属板材の消音孔作製方法 |
EP09847475.2A EP2458101B1 (en) | 2009-07-24 | 2009-07-24 | Method of making micro-holes on metal plate |
CA2738362A CA2738362C (en) | 2009-07-24 | 2009-07-24 | Method of making micro-holes on metal plate |
PCT/CN2009/072901 WO2011009240A1 (zh) | 2009-07-24 | 2009-07-24 | 在金属板材制作微孔的方法 |
KR1020117007620A KR101205165B1 (ko) | 2009-07-24 | 2009-07-24 | 금속판재에 미세구멍을 제작하는 방법 |
ZA2011/02738A ZA201102738B (en) | 2009-07-24 | 2011-04-12 | Method of making micro-holes on metal plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2009/072901 WO2011009240A1 (zh) | 2009-07-24 | 2009-07-24 | 在金属板材制作微孔的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011009240A1 true WO2011009240A1 (zh) | 2011-01-27 |
Family
ID=43498711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2009/072901 WO2011009240A1 (zh) | 2009-07-24 | 2009-07-24 | 在金属板材制作微孔的方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US8800340B2 (zh) |
EP (1) | EP2458101B1 (zh) |
JP (1) | JP5728477B2 (zh) |
KR (1) | KR101205165B1 (zh) |
CN (1) | CN102439239B (zh) |
AU (1) | AU2009350309B2 (zh) |
CA (1) | CA2738362C (zh) |
ES (1) | ES2561481T3 (zh) |
WO (1) | WO2011009240A1 (zh) |
ZA (1) | ZA201102738B (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9251778B2 (en) | 2014-06-06 | 2016-02-02 | Industrial Technology Research Institute | Metal foil with microcracks, method of manufacturing the same, and sound-absorbing structure having the same |
CN104325006B (zh) * | 2014-09-02 | 2017-02-15 | 中国南方航空工业(集团)有限公司 | 孔组加工装置 |
TWI673415B (zh) * | 2017-08-11 | 2019-10-01 | 泰奇想股份有限公司 | 具有拉伸凸部和整平凸部的複合整平擴張式吸音板 |
US10928746B2 (en) * | 2017-10-27 | 2021-02-23 | Canon Kabushiki Kaisha | Image forming apparatus including optical print head |
CN109702438A (zh) * | 2019-02-26 | 2019-05-03 | 苗增茂 | 一种较厚板材开微小孔的加工工艺 |
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2009
- 2009-07-24 KR KR1020117007620A patent/KR101205165B1/ko active IP Right Grant
- 2009-07-24 US US13/120,466 patent/US8800340B2/en active Active
- 2009-07-24 EP EP09847475.2A patent/EP2458101B1/en active Active
- 2009-07-24 ES ES09847475.2T patent/ES2561481T3/es active Active
- 2009-07-24 AU AU2009350309A patent/AU2009350309B2/en active Active
- 2009-07-24 JP JP2012520884A patent/JP5728477B2/ja active Active
- 2009-07-24 CN CN200980140802XA patent/CN102439239B/zh active Active
- 2009-07-24 WO PCT/CN2009/072901 patent/WO2011009240A1/zh active Search and Examination
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2011
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Patent Citations (6)
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TW289784B (zh) | 1993-09-21 | 1996-11-01 | Gentec Bv | |
JPH0988206A (ja) * | 1995-09-28 | 1997-03-31 | Sumitomo Metal Ind Ltd | 音波反射率を低下する表層金属板および制振構造部材 |
US6675551B1 (en) * | 1998-09-02 | 2004-01-13 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Plate-shaped constructional element and method |
CN1307957A (zh) * | 2000-12-15 | 2001-08-15 | 北京市劳动保护科学研究所 | 一种加工微孔金属板的方法和产品 |
CN2839419Y (zh) * | 2005-11-23 | 2006-11-22 | 青钢金属建材股份有限公司 | 金属吸音板 |
TW200920902A (en) | 2007-11-06 | 2009-05-16 | Ckm Building Material Corp | A sound absorptive board with geometric cavities |
Non-Patent Citations (1)
Title |
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See also references of EP2458101A4 |
Also Published As
Publication number | Publication date |
---|---|
CN102439239B (zh) | 2013-11-13 |
EP2458101A1 (en) | 2012-05-30 |
EP2458101B1 (en) | 2015-11-04 |
KR101205165B1 (ko) | 2012-11-27 |
EP2458101A4 (en) | 2013-04-24 |
CN102439239A (zh) | 2012-05-02 |
US20110265539A1 (en) | 2011-11-03 |
AU2009350309A1 (en) | 2011-01-27 |
ZA201102738B (en) | 2012-04-25 |
AU2009350309B2 (en) | 2012-05-24 |
ES2561481T3 (es) | 2016-02-26 |
JP2013500159A (ja) | 2013-01-07 |
JP5728477B2 (ja) | 2015-06-03 |
CA2738362A1 (en) | 2011-01-27 |
CA2738362C (en) | 2013-04-30 |
KR20110056535A (ko) | 2011-05-30 |
US8800340B2 (en) | 2014-08-12 |
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