Kupaka zitsulo zogwira ntchito

1. Zipangizo zomangira

(1) Titaniyamu ndi zitsulo zake zoyambira sizimapangidwa ndi solder yofewa. Zitsulo zodzaza zitsulo zomwe zimagwiritsidwa ntchito popanga soldering zimaphatikizapo maziko asiliva, maziko a aluminiyamu, maziko a titaniyamu kapena maziko a titaniyamu zirconium.

Chotsukira chopangidwa ndi siliva chimagwiritsidwa ntchito makamaka pazinthu zomwe kutentha kwake kumagwira ntchito kuli pansi pa 540 ℃. Zolumikizira zomwe zimagwiritsa ntchito chotsukira choyera cha siliva zimakhala ndi mphamvu zochepa, zosavuta kusweka, komanso kukana dzimbiri komanso kukana okosijeni. Kutentha kwa chotsukira cha Ag Cu ndi kotsika kuposa kwa siliva, koma kunyowa kumachepa ndi kuchuluka kwa Cu. Chotsukira cha Ag Cu chomwe chili ndi Li pang'ono chingathandize kunyowa ndi digiri yolumikizira pakati pa chotsukira ndi chitsulo choyambira. Chotsukira cha AG Li chili ndi mawonekedwe otsika osungunuka komanso kuchepetsedwa kwamphamvu. Ndi choyenera kutsukira titanium ndi titanium alloys mumlengalenga woteteza. Komabe, chotsukira chopanda mpweya chidzaipitsa ng'anjo chifukwa cha kuphulika kwa Li. Chitsulo chodzaza cha Ag-5al- (0.5 ~ 1.0) Mn ndicho chitsulo chodzaza chomwe chimakondedwa kwambiri pazinthu zopyapyala za titanium alloy. Cholumikizira chotsukira chili ndi kukana kokosijeni komanso dzimbiri. Mphamvu yocheka ya zolumikizira za titanium ndi titanium alloy zomwe zimatsukidwa ndi chitsulo chodzaza cha siliva chikuwonetsedwa mu Gome 12.

Gome 12 magawo a njira yopangira brazing ndi mphamvu yolumikizirana ya titaniyamu ndi titaniyamu alloys

Kutentha kwa brazing kwa solder yochokera ku aluminiyamu ndi kotsika, komwe sikungayambitse kusintha kwa titanium alloy β Phase kumachepetsa zofunikira pakusankha zipangizo ndi mapangidwe a brazing. Kuyanjana pakati pa chitsulo chodzaza ndi chitsulo choyambira ndi kochepa, ndipo kusungunuka ndi kufalikira sikuwonekeratu, koma pulasitiki ya chitsulo chodzaza ndi yabwino, ndipo n'zosavuta kukulunga chitsulo chodzaza ndi chitsulo choyambira pamodzi, kotero ndi yoyenera kwambiri pa radiator ya titanium alloy, kapangidwe ka uchi ndi kapangidwe ka laminate.

Ma fluxes okhala ndi titanium kapena titanium zirconium nthawi zambiri amakhala ndi Cu, Ni ndi zinthu zina, zomwe zimatha kufalikira mwachangu mu matrix ndikuchitapo kanthu ndi titanium panthawi yopangira brazing, zomwe zimapangitsa kuti matrix iwonongeke komanso kuti ikhale yopanda mphamvu. Chifukwa chake, kutentha kwa brazing ndi nthawi yogwirira ziyenera kulamulidwa mosamala panthawi yopangira brazing, ndipo siziyenera kugwiritsidwa ntchito popangira brazing nyumba zokhala ndi makoma ochepa momwe zingathere. B-ti48zr48be ndi solder ya Ti Zr yodziwika bwino. Imakhala ndi chinyezi chabwino ku titanium, ndipo chitsulo choyambira sichimakula bwino panthawi yopangira brazing.

(2) Zitsulo zodzaza zitsulo za zirconium ndi maziko a zitsulo zosungunulira zitsulo za zirconium ndi maziko a zitsulo zimaphatikizapo b-zr50ag50, b-zr76sn24, b-zr95be5, ndi zina zotero, zomwe zimagwiritsidwa ntchito kwambiri posungunulira mapaipi a zirconium alloy a ma reactor a mphamvu ya nyukiliya.

(3) Kutuluka kwa brazing ndi mpweya woteteza titanium, zirconium ndi ma base alloys zimatha kupeza zotsatira zabwino mu vacuum ndi inert atmosphere (helium ndi argon). Argon yoyera kwambiri iyenera kugwiritsidwa ntchito potulutsa brazing yotetezedwa ndi argon, ndipo mame ayenera kukhala -54 ℃ kapena kuchepera. Kutuluka kwapadera komwe kuli ndi fluoride ndi chloride yachitsulo Na, K ndi Li kuyenera kugwiritsidwa ntchito potulutsa flame.

2. Ukadaulo wa brazing

Musanagwiritse ntchito brazing, pamwamba pake payenera kutsukidwa bwino, kuchotsedwa mafuta ndikuchotsedwa oxide film. Filimu yokhuthala ya oxide iyenera kuchotsedwa pogwiritsa ntchito njira yamakina, njira yophulitsira mchenga kapena njira yosungunula mchere. Filimu yopyapyala ya oxide ikhoza kuchotsedwa mu yankho lomwe lili ndi 20% ~ 40% nitric acid ndi 2% hydrofluoric acid.

Ti, Zr ndi zitsulo zake siziloledwa kukhudza pamwamba pa cholumikizira ndi mpweya panthawi yotenthetsera chotenthetsera. Chotenthetsera chotenthetsera chingachitike motetezedwa ndi vacuum kapena mpweya wopanda mpweya. Chotenthetsera cho ...

Ni Cr, W, Mo, Ta ndi zipangizo zina ziyenera kusankhidwa ngati zinthu zotenthetsera Ti, Zr ndi zitsulo zake zoyeretsera. Zipangizo zokhala ndi graphite yowonekera ngati zinthu zotenthetsera siziyenera kugwiritsidwa ntchito kupewa kuipitsidwa kwa kaboni. Chopangira chitsulo choyeretsera chiyenera kupangidwa ndi zipangizo zomwe zili ndi mphamvu yabwino yotentha kwambiri, kutentha kofanana ndi Ti kapena Zr, komanso mphamvu yochepa yogwiritsira ntchito chitsulo choyambira.