1. Ka lā hoʻouka: ʻApelila, 15^th,2023
2. ʻĀina: Morocco
3.Commodity：Paʻa pūnaewele alumini pahu pahu
4. Nui: 1000mm x 90mm x 20mm/2000mmx115mmx20mm/2000mmx80mmx42mm
5. Ka nui: 50PCS
6.Usage: ho'āʻo hoʻohāhā

7. Hoʻokaʻaʻike ʻike:
Luna Kūʻai: Jessica

Leka uila: sales22@chinabeihai.net

Hana ʻia ka pā paʻa alumini paʻa i loko o ka pā leo hoʻoheheʻe kiʻekiʻe ma hope o ka mālama ʻana i ka perforation (φ2mm hole, perforation rate 1 ~ 3%), he maikaʻi loa ka hoʻokō ʻana i ke kani, a hiki i ka 60% ~ 90%. No ka mea, ʻaʻohe mokulele ka ili o kēia mea, ua maikaʻi loa ka hana hoʻoheheʻe ʻana i ka leo diffuse noʻonoʻo, a i ka manawa like ua hoʻoheheʻe ʻia ʻo Helmholtz resonance absorber sound absorption hana e hōʻoia i ka nui o ke kani kani. Eia kekahi, i loko o kahi ʻano haʻahaʻa, ʻo nā mea kani kani maʻamau e hoʻomoʻi i ka makū a hoʻonui, a ua hoʻemi nui ʻia ka coefficient hoʻoheheʻe kani, ʻoiai ʻaʻole i hoʻomoʻa ʻia ka mea hoʻoheheʻe alumini, a ʻaʻole i hoʻemi ʻia ka nui o ke kani kani.
Ke piʻi aʻe nei ka mānoanoa o ka papa ea mai 0mm a i 90mm, e emi ana ka nui o ke kani kani mai 2000Hz a ma kahi o 300Hz. Ke 10, 30, 60, 90mm ka mānoanoa o ka pae ea, ʻo ke alapine nui o ke kani absorption rate ma kahi o 1000Hz, 500Hz, 400Hz, 300Hz. E like me ka noise frequency distribution design foam rate sound absorption plate ma hope o ka mānoanoa o ka ea. ʻO ke alapine nui o ka walaʻau i hana ʻia e nā kaʻa ma ke ala nui, ka muliwai lalo a me ka submarine tunnel ma kahi o 400Hz, ʻo ia ka haʻahaʻa haʻahaʻa haʻahaʻa, no laila ua hoʻonohonoho ʻia ka papa o ka ea o 60mm mānoanoa ma hope o ka pahu alumini acoustic plate o ke ala ala ala, lalo o ka muliwai a submarine tunnel acoustic wall, nona ka hopena ho'ēmi leo maikaʻi. ʻO ka walaʻau o ke kaʻaahi he leo alapine-kiʻekiʻe ma luna o 1000Hz, a ʻo 20mm ka mānoanoa o ka ea i hoʻonoho ʻia ma hope o ka pahu alumini hoʻoheheʻe leo, nona ka hopena hoʻemi maikaʻi.