Malleable Hlau Yeeb Nkab Fittings Zoo Tswj Txheej Txheem

1, cov ntsiab lus sulfur ntawm cov hlau kub qub

Elemental sulfur noj deterioration. Nws muaj zog heev ntawm kub hlau sulfur thiab siab magnesium, cerium, calcium, muaj ntau modifier yog vulcanized rau hauv lub slag, li no yuav txo tau lub peev xwm ua rau deterioration ntawm kev kho mob tsis ua tiav. Yog li ntawd, nyob rau hauv zus tau tej cov malleable hlau yeeb nkab fittings yuav tsum tau sim siv tsawg sulfur-muaj npua hlau thiab coke. Cov xwm txheej, ua ntej ntsuas rau desulphurization yog qhov zoo. Qhov no tsis yog hais tias nrog ntau dua cov ntsiab lus ntawm cov hlau molten tsis tuaj yeem ua tiav kev ua tiav malleable hlau yeeb nkab fittings. Ntau lub tsev tsim khoom hauv tsev thiab txawv teb chaws nrog cov ntsiab lus ntawm cov sulfur txog li 0.06-0.08% ntawm cov hlau kub kub cupola tuaj yeem ua kom ruaj khov ua cov hlau yeeb nkab fittings, tab sis deterioration ntawm cov alloy yuav tsum tau siv ntau npaum li cas. Cov ntaub ntawv ntawm cov kev paub dhau los nrog 0.07-0.13% sulfur kub hlau tsim ntawm compacted graphite cam khwb cia hlau uas nyob rau hauv tej yam kev mob, xws li titanium kom nthuav dav ntawm kev txiav txim los ntawm kev siv cov tshuaj tiv thaiv pob ntawm leej faj. Txawm li cas los xij, tus naj npawb ntawm cov sulfur yog ruaj khov ua malleable hlau yeeb nkab fittings tsim nyog yuav tsum tau.

2, ua haujlwm kub ntawm molten hlau

Thaum lub molten hlau tsis kub kev kho mob Gao muaj ib tug tseem ceeb cuam tshuam rau lub nqus tus nqi ntawm cov alloy, tshwj xeeb tshaj yog magnesium-based vermicularizing txawm ntau npaum li ntawd. Qhov siab dua qhov kub, qhov kub hnyiab ntau dua ntawm magnesium gasification, hlawv ntau dua, qee qhov qis li qhov ua tau kom ua haujlwm kub thiab txias. Cov ntaub ntawv piav qhia thaum siv magnesium titanium composite modifier processing malleable hlau yeeb nkab fittings, cov teebmeem ntawm kev kho kub sib txawv ntawm kev kho mob efficiency. Kev ua haujlwm ntawm 1400 ℃, worm-zoo li graphite hauv ntau dua 95%, pob tsis tshua muaj; ntawm 1280 ℃ kev kho mob, ntau tshaj ib nrab ntawm cov graphite nodules. Alloy tus nqi yog tib yam, kev ua haujlwm kub ntawm qhov pom loj pom tus nqi.

Hauv kev tsim khoom tiag tiag, qhov ntsuas kub yuav tsum raug txiav txim siab los txiav txim siab cov txheej txheem rau casting pouring kub yuav tsum tau. Txawm li cas los xij, kev ua haujlwm kub yuav tsum ruaj khov li qhov ua tau, yog tias qhov kub hloov pauv loj, tus nqi yuav tsum tau hloov kho alloy, txwv tsis pub nws yog qhov nyuaj los xyuas kom meej qhov zoo ntawm kev kho mob.

Tsis tshua muaj lub ntiaj teb-raws li vermicularizing, qhov kub ntawm cov txheej txheem yog siab dua Advantageously, qhov kub thiab txias yog tsis yooj yim txawm, tsis txawm tag nrho melted alloy, yog li cuam tshuam rau cov kev kho mob nyhuv.

3. Kev ua haujlwm ua haujlwm

Txij li thaum cov txheej txheem creep ntawm cov txheej txheem vim qhov hloov pauv hauv cov lus teb tangled rhiab, yog li yuav tsum tau ua haujlwm qhia kom nruj me ntsis. Tsis sib xws ntawm cov alloy muaj pes tsawg leeg, alloy npog cov ntaub ntawv, ntau thiab cov hlau alloys, slag slag thiab lwm yam kev ntsuas, xws li muaj kev cuam tshuam ncaj qha rau cov nyhuv kho.