Tubing Aluminium Tubes ndi Kutentha Kwambiri

Induction Brazing Aluminium Tubes yokhala ndi Kutentha Kwambiri Pafupipafupi

Malo ogwiritsa ntchito buku la Kutentha kotentha Pamafunika kusanthula kugawa kwa kutentha mkati mwazinthu zotenthetsera poganizira zomwe zikugwirizana ndi zinthuzo. Njira yotsirizira (FEM) imapereka chida champhamvu chochitira kusanthula kotereku ndikukhathamiritsa kwamakina otenthetsera kudzera pamagetsi ndi ma thermal kusanthula ndi kuyerekezera.

Cholinga chachikulu cha zoperekazi ndikuwonetsa kuthekera kogwiritsa ntchito ukadaulo woyenera, wotsogola komanso wogwira ntchito popanga osonkhanitsa dzuwa potengera kuyerekezera kwamanambala ndi zoyeserera zomwe zachitika.

Kufotokozera kwavuto

Ntchitoyi imagwira ntchito yopanga zigawo za osonkhanitsa dzuwa oyenera kupanga brazing, zomwe ndi magawo osonkhanitsira tubing (mkuyu 1a). Machubu amapangidwa kuchokera ku Al alloy ya mtundu wa AW 3000 wokhala ndi mankhwala omwe amaperekedwa mu Gulu 1. Pogwiritsa ntchito mtundu wa Al 104 womwe umagwiritsidwa ntchito (Gulu 2) limodzi ndi kutuluka kwa Braze Tec 32/80 komwe zotsalira sizili -kuwononga. Kutentha pakati pa solidus ndi kutentha kwamadzimadzi kwa Al 104 brazing alloy kuyambira 575 ° C mpaka 585 ° C. Kutentha kwa solidus kwa chubu ndi 650 ° C.

Gulu 1 Kupanga kwa mankhwala a AW 3000 alloy [wt. %]

Si Fe Cu Mn Mg Zn Cr Al
0.05-0.15 0.06-0.35 Max. 0.1 0.3-0.6 0.02-0.20 0.05-0.3 Max. 0.25 bwino

Tebulo 2 Mapangidwe amtundu wa brazing alloy wa Al 104 mtundu [wt. %]

Si Fe Cu Mn Mg Zn Ti Al
11-13 0.6 Max. 0.3 0.15 0.1 0.2 Max. 0.15 bwino

Njira yolimbitsira imaganiza kuti ntchito yotenthetsera. Ndikofunikira kupanga makina otenthetsera munjira yoti kutentha kwa brazing kukwaniritsidwe mgwirizanowu (zitsulo zamkuwa - brazing alloy) nthawi yomweyo. Kuchokera pamalingaliro awa, kusankha koyenera koyilo induction, ma geometry ake ndi magwiridwe antchito (makamaka mafupipafupi ndi magwero apano) ndikofunikira kwambiri. Maonekedwe ndi kukula kwake kwa koyilo wamkuwa wonyezimira wamkuwa akuwonetsedwa Chithunzi 1b

Zotsatira zamakonzedwe oyenera a Kutentha kotentha pamagawidwe otentha m'magawo olimba adayesedwa pogwiritsa ntchito kuyerekezera kwamankhwala kotentha kotentha komwe kumagwiritsa ntchito pulogalamu ya ANSYS 10.0.

Mtundu woyimira

Malinga ndi njira yothetsera zovuta zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi ndi zida zamagetsi.Malinga ndi njira yothetsera zovuta zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi, malingana ndi njira ya yankho la zovuta zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi zamagetsi.Malinga ndi njira yothetsera zovuta zamagetsi zamagetsi zamagetsi ndi matenthedwe a FEM ogwiritsa ntchito pulogalamu ya ANSYS 10.0 [3-5], mtundu wofanizira wa kutenthetsa kwa brazing kunapangidwa kuphatikiza mawonekedwe a geometrical, thupi, komanso koyambirira komanso malire. Cholinga chachikulu cha kuyerekezera manambala ndikutanthauzira magawo abwino otenthetsera kutentha (pafupipafupi komanso gwero lazomwe zilipo) kuti akwaniritse kutentha kofunikira m'chigawo chophatikizana.

Zithunzi za 3D (mkuyu 2) zowunikira zamagetsi zimakhala ndi ma machubu, aloyi wa brazing, coil yoziziritsa madzi ndi mpweya wozungulira (wosawonetsedwa mkuyu. 2). Pakusanthula kwamafuta, ndimachubu ndi brazing alloy zokha zomwe zimaganiziridwa. Tsatanetsatane wa mauna omwe adapangidwa kuchokera pamzere, zinthu za 8-node m'dera la mapangidwe olumikizidwa zikuwonetsedwa mu mkuyu. 2b.

Chith. 2 a) Mtundu wamagetsi wamagetsi wamagetsi wamagetsi wamagetsi wamagetsi osapumira mpweya ndi b) tsatanetsatane wa mauna a 3D omwe amapangidwa mgulu la mapangidwe olumikizana. Kudalira kwamphamvu yamagetsi ndi matenthedwe a AW 3000 alloy ndi Al 104 brazing alloy adapezeka pogwiritsa ntchito JMatPro mapulogalamu [6]. Kutsatira kuchokera kuzipangizo zomwe zimagwiritsidwa ntchito ndizosagwiritsa ntchito maginito, zimayendera limodzi µr = 1.

Kutentha koyamba kwa zida zamkuwa kunali 20 ° C. Kulumikizana kwabwino kwamagetsi ndi matenthedwe pamalire azida zimayenera. Pafupipafupi gwero lazomwe zilipo mu coil induction limayenera kukhala 350 kHz. Mtengo wazomwe zidachokera pano umatanthauziridwa kuchokera pakatikati pa 600 A mpaka 700 A. Kuzizira kwa machubu olimba ndi ma convection aulere komanso cheza mlengalenga ndi kutentha kwa 20 ° C kudaganiziridwa. Kuphatikizira kwa kutentha kophatikizana kutengera kutentha kwapamwamba kwa magawo amkuwa kunatanthauzidwa. Mu mkuyu 3, magawidwe akutentha azinthu zopangika pambuyo pokwaniritsa kutentha kofunikira m'chigawo chophatikizidachi akuwonetsedwa pamitundu yosankhidwa yamafunde oyambira mu kutentha kotentha. Nthawi yamasekondi 36 ogwiritsa ntchito komwe akuchokera ku 600 A ikuwoneka ngati yayitali. Kutentha kwachangu komwe kumagwiritsa ntchito gwero la 700 A sikungakhale kokwanira kusungunuka kwa al 104 brazing alloy. Pachifukwa ichi gwero lomwe lilipo pakadali pano pamlingo wa 620 A mpaka 640 A tikulimbikitsidwa kutsogolera ku nthawi yolimba kuyambira masekondi 25 mpaka 27.5 ……

Tubing Aluminium Tubes ndi Kutentha Kwambiri