Vim li cas malleable steel yeeb nkab fittings muaj nplaum pwm thiab succulent tsis xws luag?
May 16, 2023
(1) Plhaub hom Coated xuab zeb nrog furan resin coated rau saum npoo ntawm cov xuab zeb nplej yog siv. Sprinkle cov resin-coated xuab zeb mus rau lub rhuab hlau qauv nyob rau hauv ib lub sij hawm, thiab cov resin yuav yaj vim lub tshav kub ntawm cov qauv, thiab cov resin xuab zeb yuav tsim ib tug nyias txheej txheej nyob rau saum npoo ntawm tus qauv (qhov seem unbonded xuab zeb yuav ua tau. rov siv dua lwm zaus). Cov xuab zeb nyias txheej yog rhuab ua ke nrog cov qauv mus txog 260 degree, thiab tom qab cov xuab zeb ua kom tawv tawv tag, cov xuab zeb nyias nyias raug tshem tawm ntawm cov qauv kom tau ib nrab lub plhaub. Bonding ob halves ntawm lub plhaub nrog ib tug nplaum ua ib lub plhaub.
(2) Txoj kev tsis zoo siab molding Npog lub ntsej muag ntawm tus qauv nrog ib zaj duab xis yas, muab lub thawv xuab zeb rau ntawm nws, thiab tom qab ntawd sau nrog cov xuab zeb qhuav yam tsis muaj binder. Lub thawv xuab zeb kuj tseem npog nrog cov yas zaj duab xis, thiab tom qab ntawd lub tshuab nqus tsev yog siv los nqus cua thiab decompress tawm sab nraud ntawm lub qhov cua qhib rau ntawm lub thawv xuab zeb. Cov xuab zeb qhuav sandwiched ntawm tus qauv saum npoo thiab txheej txheej ntawm yas zaj duab xis yog compacted nyob rau hauv qhov kev txiav txim ntawm atmospheric siab kom tiav cov duab. Txoj kev qauv no tseem hu ua V method process.
Pouring tuaj yeem nqa tawm tom qab cov pwm tau kos thiab lub thawv yog fastened. Txhawm rau tiv thaiv cov pwm los ntawm kev sib tsoo thaum lub sij hawm nchuav, nws yog ib qho tsim nyog yuav tsum tau ua kom tsis muaj zog ntxiv. Cov yam ntxwv ntawm cov pwm no yog tias tsis muaj binder thiab noo noo ntxiv lawm.
Raws li lub hauv paus ntawm malleable steel yeeb nkab fittings, qhov muaj pes tsawg leeg thiab kub ntawm cov hlau molten muaj kev cuam tshuam zoo rau cov khoom siv ntawm cov yeeb nkab fittings. Yog li ntawd, nruj me ntsis tswj lub Cheebtsam ntawm ntau yam nyob rau hauv lub molten hlau, thiab tswj qhov kub ntawm cov hlau molten los ntawm lub cub tawg thiab casting yog lub hauv paus rau ua zoo malleable steel yeeb nkab fittings. Smelting yog ib qho tseem ceeb ntawm kev tsim cov hlau castings, thiab qhov zoo ntawm cov hlau castings nyob ntawm qhov zoo ntawm cov hlau molten. High-quality molten hlau yuav tsum ua raws li cov cai hauv qab no:
(1) Cov tshuaj muaj pes tsawg leeg ua tau raws li qhov yuav tsum tau ua thiab nyob ruaj khov;
(2) Qhov kub thiab txias txias yog qhov tsim nyog;
(3) Cov ntsiab lus ntawm cov pa oxygen, nitrogen, hydrogen thiab qee cov khoom siv microscopic yog nyob rau hauv kev tswj xyuas;
(4) Cov ntsiab lus tsawg ntawm qhov nyuaj-rau-sib cais thiab theem nrab suav nrog.
