Txoj kev nkag mus rau hauv lub cub tawg
Tus neeg sawv cev carburizing yog qhov tsim nyog rau kev yaj hauv lub cub tawg induction, tab sis kev siv tshwj xeeb tsis zoo ib yam raws li cov txheej txheem xav tau.
(1) Hauv qhov nruab nrab zaus cua sov melting siv carburizing tus neeg sawv cev, raws li qhov sib piv lossis cov pa roj carbon sib npaug nrog cov khoom ntxiv rau qhov qis dua ntawm lub cub tawg, tus nqi rov qab tuaj yeem ncav cuag ntau dua 95%;
(2) cov kua hlau yaj yog tias cov pa roj carbon tsis txaus los kho lub sijhawm carbon, ua ntej ua si lub cub tawg slag, thiab tom qab ntawd ntxiv cov neeg sawv cev carburizing, los ntawm cov kua hlau cua sov, electromagnetic stirring lossis dag stirring kom yaj cov pa roj carbon nqus, tus nqi rov qab tuaj yeem yog li 90, yog tias cov txheej txheem carburizing kub qis, uas yog, tus nqi tsuas yog yaj ib feem ntawm cov hlau yaj kub qis, tag nrho cov neeg sawv cev carburizing ib zaug ntxiv rau cov kua hlau, Tib lub sijhawm, nws raug nias rau hauv cov kua hlau nrog cov khoom them kom khaws nws ntawm qhov chaw ntawm cov kua hlau. Txoj kev no tuaj yeem ua rau cov kua hlau carburization ntau dua 1.0%.
Kev siv cov neeg sawv cev carburizing kom raug hauv qhov cub induction
1, siv lub cub hluav taws xob 5T lossis ntau dua, cov khoom siv raw yog ib qho thiab ruaj khov, peb pom zoo kom siv txoj kev ntxiv dispersive. Raws li qhov yuav tsum tau ua ntawm cov pa roj carbon, raws li qhov sib piv ntawm cov khoom xyaw, tus neeg sawv cev carburizing thiab hlau them nrog txhua pawg ntawm cov khoom siv los koom nrog lub cub hauv qab, ib txheej ntawm cov hlau them ib txheej ntawm tus neeg sawv cev carburizing, tus nqi nqus carbon tuaj yeem ncav cuag 90% -95%, tus neeg sawv cev carburizing thaum yaj tsis txhob slag, txwv tsis pub yooj yim rau qhwv hauv cov khib nyiab slag, cuam tshuam rau kev nqus ntawm carbon;
2. Siv lub cub tawg induction nruab nrab ntawm kwv yees li 3T, thiab cov khoom siv raw yog ib qho thiab ruaj khov. Peb pom zoo kom siv txoj kev ntxiv centralized. Thaum me ntsis hlau molten yaj lossis tso rau hauv lub cub tawg, tus neeg sawv cev carburizing raug ntxiv rau ntawm qhov chaw ntawm hlau molten hauv ib zaug, thiab cov hlau raug ntxiv tam sim ntawd. Tus neeg sawv cev carburizing raug nias rau hauv hlau molten, yog li tus neeg sawv cev carburizing tau sib cuag tag nrho nrog hlau molten, thiab tus nqi nqus yog ntau dua 90%;
3, siv lub cub hluav taws xob me me nruab nrab zaus, cov khoom siv raw nrog npua hlau thiab lwm yam khoom siv carbon siab, peb pom zoo kom kho cov neeg sawv cev carburizing kom zoo. Tom qab hlau / molten hlau yaj, kho cov ntsiab lus carbon, tuaj yeem ntxiv rau ntawm qhov chaw ntawm hlau / molten hlau, los ntawm eddy tam sim no stirring ntawm hlau (hlau) dej lossis dag stirring kom yaj thiab nqus cov khoom, tus nqi nqus carbon yog li 93%.
Txoj kev carburization sab nraum lub cub tawg
1. Tsuag cov hmoov graphite rau hauv lub hnab
Cov hmoov graphite ua tus neeg sawv cev carburizing, tshuab rau hauv qhov ntau ntawm 40kg / t, tuaj yeem ua rau cov pa roj carbon ntawm cov kua hlau los ntawm 2% mus rau 3%. Raws li cov pa roj carbon ntawm cov kua hlau maj mam nce, qhov kev siv cov pa roj carbon txo qis. Qhov kub ntawm cov kua hlau ua ntej carburization yog 1600 ℃, thiab qhov kub nruab nrab tom qab carburization yog 1299 ℃. Cov hmoov graphite carburization, feem ntau siv nitrogen ua tus nqa, tab sis nyob rau hauv kev tsim khoom lag luam, huab cua compressed yooj yim dua, thiab cov pa oxygen hauv cov cua compressed combustion los tsim CO2, cov cua sov tshuaj lom neeg tuaj yeem them ib feem ntawm qhov kub poob, thiab CO2 txo huab cua yog qhov zoo rau kev txhim kho cov nyhuv carburization.
2, kev siv cov hlau carburizing tus neeg sawv cev
100-300 graphite hmoov carburizing tus neeg sawv cev tuaj yeem muab tso rau hauv pob, lossis los ntawm lub qhov hluav taws xob hlau nrog cov dej ntws mus rau hauv, tom qab hlau tawm ntawm cov kua tag nrho do, kom deb li deb tau kom yaj cov pa roj carbon nqus, cov pa roj carbon rov qab yog li 50%.
Thaum siv cov neeg sawv cev carburizing yuav tsum tau them sai sai rau qhov teeb meem
Yog tias lub sijhawm ntxiv cov khoom siv carburizing ntxov dhau, nws yooj yim rau txuas nws ze ntawm qab ntawm lub cub tawg, thiab cov khoom siv carburizing uas txuas rau phab ntsa ntawm lub cub tawg tsis yooj yim rau kev sib xyaw rau hauv cov hlau kua. Ntawm qhov tsis sib xws, ntxiv lub sijhawm lig dhau, yuav poob lub sijhawm los ntxiv cov pa roj carbon, ua rau yaj, thiab lub sijhawm cua sov qeeb. Qhov no tsis yog tsuas yog ncua lub sijhawm rau kev tshuaj xyuas cov tshuaj lom neeg thiab kev hloov kho, tab sis kuj muaj kev pheej hmoo ntawm kev puas tsuaj los ntawm kev sov ntau dhau. Yog li ntawd, cov khoom siv carburizing lossis thaum lub sijhawm ntxiv cov hlau them me ntsis los koom ua ke.
Xws li yog tias muaj ntau ntxiv, tuaj yeem ua ke nrog lub cub tawg induction thaum cov kua hlau overheating ua haujlwm ua ke nrog kev xav, kom ntseeg tau tias lub carburizer hauv cov kua hlau nqus lub sijhawm ntawm 10Min, ntawm ib sab tes los ntawm electromagnetic stirring nyhuv ntawm carburizer tag nrho diffusion nqus, kom ntseeg tau tias qhov nqus tau zoo. Ntawm qhov tod tes, tus nqi ntawm nitrogen coj mus rau hauv lub carburizer tuaj yeem txo qis.
Tsis txhob ntxiv ib zaug, ntxiv rau hauv cov khoom ua ke, thiab thaum kawg yaj ib feem, muab ib feem ntawm cov hlau kub (kwv yees li ib pob) rau hauv lub hnab, thiab tom qab ntawd rov qab mus rau lub cub tawg carburizer 1-2 zaug, thiab tom qab ntawd slag, ntxiv alloy.
Muaj ntau yam uas yuav tsum tau them sai sai rau:
1. Tus neeg sawv cev carburizing nyuaj rau nqus (tsis muaj calcination);
2, cov khoom faib ntawm cov tshauv ntawm cov neeg sawv cev carburizing tsis sib xws;
3. Koom nrog lig dhau lawm;
4. Txoj kev sib txuas tsis yog lawm, thiab kev sib txuas ua ntau txheej yog siv. Tsis txhob siv cov hlau ua kua thiab cov slag ntau dhau thaum ntxiv;
5. Sim tsis txhob siv cov khoom xeb ntau dhau.
Cov yam ntxwv ntawm cov neeg sawv cev carburizing zoo
1, qhov loj ntawm cov khoom me me yog qhov nruab nrab, qhov porosity loj, qhov ceev nqus tau sai.
2. Cov tshuaj lom neeg ntshiab, cov pa roj carbon ntau, cov sulfur tsawg, cov khoom me me uas ua rau muaj kev phom sij, thiab kev nqus dej sai.
3, cov khoom graphite crystal qauv zoo, txhim kho lub peev xwm nucleation ntawm cov kua hlau qub. Nce tus naj npawb ntawm cov nodular hlau nodules hauv kev txhaj tshuaj, thiab nce lub nucleus graphite hauv hluav taws xob cua sov kua hlau. Txhim kho thiab txawm tias kev faib tawm ntawm cov kua fossil hauv castings.
4. Kev ua tau zoo heev thiab ruaj khov.
Kev xaiv cov neeg sawv cev carburizing tsim nyog pab txo cov nqi tsim khoom smelting, txhim kho qhov zoo ntawm cov hlau smelting thiab castings, yog li ntawd cov nroj tsuag smelting, casting
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-02-2022