Xov xwm

Cov hlau nplaum, ua ib yam khoom siv sib txuas tseem ceeb hauv ntau qhov chaw xws li khoom siv hluav taws xob, tsheb, aerospace, thiab lwm yam, nws qhov zoo thiab kev ua tau zoo cuam tshuam ncaj qha rau kev ntseeg tau thiab kev ruaj khov ntawm cov khoom. Nrog rau kev nce qib ntawm thev naus laus zis, qhov yuav tsum tau ua rau kev huv si, microstructure, thiab kev ua tau zoo ntawm cov hlau nplaum tau dhau los ua qhov siab dua. Ua ib qho khoom siv hlau casting siab heev, lub tshuab nqus tsev kab rov tav txuas ntxiv casting tau maj mam nyiam kev saib xyuas hauv kev lag luam hlau nplaum, muab cov kev daws teeb meem zoo rau kev tsim cov hlau nplaum zoo.

1,Txoj cai ua haujlwm ntawmlub tshuab nqus tsev kab rov tav txuas ntxiv mus

Lub tshuab nqus tsev txuas ntxiv mus rau hauv lub tshuab nqus tsev feem ntau yog tsim los ntawm lub cub tawg, lub tshuab crystallizer, lub cuab yeej rub billet, lub tshuab nqus tsev, thiab lwm yam khoom. Ua ntej, muab cov khoom siv solder tso rau hauv lub cub tawg thiab ua kom sov kom txog thaum nws kub txaus. Tom qab ntawd, thaj chaw casting raug tshem tawm mus rau qee qib los ntawm lub tshuab nqus tsev kom txo qhov sib xyaw ntawm cov pa roj tsis huv. Nyob rau hauv qhov kev ua ntawm lub ntiajteb txawj nqus thiab lub siab sab nraud, cov kua solder ntws mus rau hauv lub tshuab crystallizer uas tso rau hauv kab rov tav, uas txias los ntawm cov dej ncig kom maj mam khov thiab crystallize ntawm nws phab ntsa sab hauv, tsim lub plhaub. Nrog rau kev rub qeeb ntawm lub cuab yeej casting, cov kua solder tshiab tau rov ua dua tshiab rau hauv lub tshuab crystallizer, thiab lub plhaub solder khov kho tau rub tawm tas li, yog li ua tiav cov txheej txheem casting tas li.

lub tshuab nqus tsev kab rov tav txuas ntxiv mus

2,Qhov Zoo ntawm Lub Tshuab Nqus Tsev Kab Rov Tav Nruam Casting Tshuab

（1)Txhim kho qhov purity ntawm solder

Kev pov rau hauv qhov chaw nqus tsev tuaj yeem tiv thaiv cov pa roj tsis huv xws li oxygen thiab nitrogen kom tsis txhob nkag mus rau hauv cov hlau nplaum, txo qhov tsim ntawm oxide inclusions thiab pores, txhim kho qhov huv ntawm cov hlau nplaum, thiab txhim kho nws cov dej noo thiab ntws tau thaum lub sijhawm vuam, yog li txhim kho qhov zoo ntawm cov hlau nplaum.

（2)Txhim kho cov qauv me me ntawm cov ntaub ntawv solder

Thaum lub sijhawm nqus tsev txuas ntxiv mus rau hauv cov txheej txheem nqus tsev, qhov nrawm ntawm cov kua nplaum yog qhov sib xws, thiab qhov nrawm txias tuaj yeem tswj tau, uas yog qhov zoo rau kev tsim cov qauv zoo sib xws thiab cov noob zoo thiab txo cov xwm txheej sib cais. Cov qauv kev teeb tsa zoo sib xws no ua rau cov khoom siv kho tshuab ntawm cov nplaum ruaj khov dua, xws li lub zog tensile thiab elongation, uas tau txhim kho thiab ua tau raws li qee qhov xwm txheej thov rau kev ua haujlwm ntawm cov nplaum.

（3)Kev tsim khoom tas mus li zoo

Piv rau cov txheej txheem casting ib txwm muaj, cov tshuab nqus tsev txuas ntxiv mus rau kab rov tav tuaj yeem ua tiav kev tsim khoom tas mus li thiab tsis tu ncua, txhim kho kev ua haujlwm ntau lawm. Tib lub sijhawm, nws muaj qib siab ntawm kev ua haujlwm tsis siv neeg, txo cov kauj ruam ua haujlwm tes, txo qis kev siv zog ua haujlwm thiab cov nqi tsim khoom, thiab ua rau cov txheej txheem tsim khoom ruaj khov thiab txhim khu kev qha, uas yog qhov zoo rau kev tswj hwm cov khoom zoo tas mus li.

（4)Txo cov khoom siv raw pov tseg

Vim yog cov txheej txheem casting tas mus li thiab kev tswj hwm qhov loj me thiab cov duab ntawm lub billet, piv rau lwm txoj kev casting, nws tuaj yeem siv cov khoom siv raw zoo dua, txo cov khoom pov tseg los ntawm kev txiav, kev siv tshuab, thiab lwm yam, txhim kho tus nqi siv cov khoom siv raw, thiab txo cov nqi tsim khoom.

3,Cov ntawv thov tshwj xeeb hauv kev lag luam solder

（1)Cov txheej txheem ntau lawm

Hauv kev tsim cov khoom siv solder, thawj kauj ruam yog sib tov cov khoom xyaw solder uas xav tau thiab ntxiv cov khoom siv raw uas tau npaj tseg rau hauv lub cub tawg ntawm lub tshuab nqus tsev kab rov tav txuas ntxiv. Pib lub tshuab nqus tsev, txo qhov siab hauv lub cub tawg mus rau qib nqus tsev uas tsim nyog, feem ntau ntawm kaum tawm pascals thiab pua pua pascals, tom qab ntawd cua sov thiab yaj cov solder thiab tswj qhov kub thiab txias kom ruaj khov. Kho qhov ceev casting thiab qhov ntim dej txias ntawm lub crystallizer kom ntseeg tau tias cov kua solder khov kho sib npaug hauv lub crystallizer thiab raug rub tawm tas li, tsim cov lus qhia tshwj xeeb ntawm cov solder billet. Cov khoom seem yog ua tiav los ntawm kev dov tom qab, kos duab thiab lwm yam kauj ruam ua tiav los tsim ntau yam duab thiab cov lus qhia ntawm cov khoom solder, xws li hlau vuam, vuam strip, solder paste, thiab lwm yam, kom tau raws li qhov xav tau vuam ntawm ntau qhov chaw sib txawv.

（2)Txhim kho qhov zoo ntawm cov ntaub ntawv solder

Piv txwv li, siv cov khoom siv Sn Ag Cu uas tsis muaj hmoov txhuas uas feem ntau siv hauv kev lag luam hluav taws xob, thaum tsim los ntawm kev siv lub tshuab nqus tsev txuas ntxiv mus, cov pa oxygen hauv cov khoom siv tuaj yeem tswj tau nruj me ntsis ntawm qib qis heev, zam cov khoom tsis huv xws li tin slag los ntawm kev oxidation thiab txhim kho kev siv cov khoom siv zoo. Tib lub sijhawm, cov qauv kev teeb tsa sib xws ua rau cov khoom siv tuaj yeem sau cov qhov sib koom ua ke me me thaum lub sijhawm micro soldering ntawm cov khoom siv hluav taws xob, txo cov qhov tsis zoo ntawm kev vuam xws li virtual soldering thiab bridging, thiab txhim kho kev ntseeg tau ntawm kev vuam thiab kev ua haujlwm hluav taws xob ntawm cov khoom siv hluav taws xob.

Hauv cov txheej txheem brazing ntawm kev lag luam tsheb, rau cov khoom siv aluminium muaj zog siab, cov khoom siv solder uas tsim los ntawm lub tshuab nqus tsev kab rov tav txuas ntxiv mus tas li muaj zog dua thiab tiv taus corrosion. Nws cov qauv noob sib xws ua kom ntseeg tau tias cov khoom siv solder ruaj khov thaum lub sijhawm brazing kub siab, uas tuaj yeem txuas cov khoom siv tsheb kom ruaj khov thiab txhim kho kev ua tau zoo tag nrho thiab lub neej kev pabcuam ntawm cov khoom siv tsheb.

（3)Piv txwv ntawm daim ntawv thov

Ib lub tuam txhab tsim khoom siv solder uas paub zoo tau qhia txoglub tshuab nqus tsev theem txuas ntxiv mus, uas tau ua kom nws cov khoom siv tin lead solder huv si los ntawm 98% mus rau ntau dua 99.5%, thiab txo cov ntsiab lus ntawm cov oxide inclusions. Hauv kev siv vuam ntawm cov laug cam hluav taws xob, qhov tsis ua haujlwm vuam tau txo qis los ntawm 5% mus rau tsawg dua 1%, ua rau kev sib tw ua lag luam ntawm cov khoom zoo dua. Tib lub sijhawm, vim yog kev txhim kho kev ua haujlwm zoo thiab kev txo cov khoom siv pov tseg, tus nqi tsim khoom ntawm lub tuam txhab tau txo qis li 15%, ua tiav cov txiaj ntsig zoo rau kev lag luam thiab kev sib raug zoo.

4,Kev cia siab rau kev loj hlob

Nrog rau kev loj hlob sai ntawm cov lag luam xws li khoom siv hluav taws xob, lub zog tshiab, thiab kev tsim khoom siv siab heev, qhov zoo thiab kev ua tau zoo ntawm cov khoom siv solder yuav txuas ntxiv mus ntxiv. Lub tshuab nqus tsev kab rov tav txuas ntxiv casting muaj kev cia siab dav hauv kev lag luam solder vim nws cov txiaj ntsig tshwj xeeb. Yav tom ntej, nrog rau kev nce qib tas mus li ntawm cov cuab yeej tsim khoom siv, nws lub tshuab nqus tsev yuav ua haujlwm tau zoo dua thiab ruaj khov, qib ntawm kev tswj hwm automation yuav raug txhim kho ntxiv, thiab kev tswj hwm cov txheej txheem parameter meej dua tuaj yeem ua tiav, tsim cov khoom lag luam solder zoo dua thiab tus kheej ntau dua. Lub caij no, nrog rau cov kev cai ib puag ncig nruj dua, qhov zoo ntawm cov tshuab nqus tsev theem txuas ntxiv casting hauv kev txo kev siv hluav taws xob thiab cov pa phem kuj tseem yuav ua rau lawv yog cov thev naus laus zis txhawb nqa tseem ceeb rau kev txhim kho kev lag luam solder.

5, Xaus lus

Daim ntawv thov ntawm lub tshuab nqus tsev kab rov tav txuas ntxiv casting hauv kev lag luam solder muab kev lees paub zoo rau kev tsim khoom zoo thiab ua haujlwm tau zoo ntawm solder. Los ntawm kev txhim kho qhov huv ntawm solder, txhim kho cov qauv kev teeb tsa, ua tiav kev tsim khoom tas mus li, thiab txo cov nqi, qhov kev thov nce ntxiv rau solder hauv kev lag luam niaj hnub no tau raug ntsib. Nrog rau kev txhim kho tas mus li thiab kev txhim kho ntawm thev naus laus zis, nws daim ntawv thov hauv kev lag luam solder yuav dhau los ua qhov dav dua thiab tob dua, txhawb kev txhim kho ntawm kev lag luam solder mus rau qhov zoo, kev ua tau zoo, thiab kev tiv thaiv ib puag ncig ntsuab, muab cov ntaub ntawv txuas zoo dua thiab txhim khu kev qha rau ntau lub lag luam uas vam khom kev sib txuas solder, thiab txhawb kev txhim kho thev naus laus zis thiab kev nce qib ntawm tag nrho cov saw hlau kev lag luam.

Hauv kev txhim kho yav tom ntej ntawm kev lag luam solder, cov tuam txhab lag luam yuav tsum lees paub tag nrho lub peev xwm thiab tus nqi ntawm cov tshuab nqus tsev txuas ntxiv mus, nquag qhia thiab siv cov thev naus laus zis siab heev no, txhawb nqa kev tsim kho tshiab thiab kev ua kom zoo dua qub, txuas ntxiv txhim kho lawv txoj kev sib tw ua lag luam, thiab ua ke txhawb kev lag luam solder kom txav mus rau theem tshiab ntawm kev txhim kho.