Sab saum toj 7 Txoj Kev ntawm Normalizing thiab Yuav Ua Li Cas Siv Lawv Zoo

 

Kuv Taw Qhia

 

Normalizing, raws li cov txheej txheem kev kho cua sov, yog ib qho tseem ceeb ntawm kev txhim kho cov khoom siv hlau thiab cov hlau. Los ntawm cua sov cov hlau mus rau qhov kub thiab txias, tuav nws rau qee lub sijhawm, thiab txias nws hauv kev tswj hwm, cov qauv xav tau thiab cov khoom tau txais. Normalizing cov txheej txheem sib txawv nyob ntawm qhov kub thiab txias, txoj kev txias, thiab lub hom phiaj. Cov txheej txheem no tuaj yeem muab faib ua cov pa normalizing, subcritical normalizing, isothermal normalizing, high-temperature normalizing, water-cooled normalizing, air-cooled normalizing, thiab spray normalizing. Txhua txoj kev muaj qhov tshwj xeeb ntawm daim ntawv thov scenarios thiab qhov zoo thaum lub sij hawm normalizing txheej txheem.

 

 

II Hom thiab yam ntxwv ntawm Normalizing

 

1. Kev ua kom zoo li qub

Lus Txhais: Kev ua kom zoo li qub yog txheej txheem kev kho cua sov uas cov hlau tau rhuab mus rau qhov kub ntawm 30-50 degree saum Ac3 (rau hypoeutectoid steel) lossis Accm (rau hypereutectoid steel), tuav rau qee lub sijhawm, thiab tom qab ntawd txias hauv huab cua.

 

Yam ntxwv:

• Nruab nrab txias ceev, nruab nrab ntawm annealing thiab quenching.
• Ua zoo pearlite thiab ferrite lug, txhim kho lub zog thiab toughness ntawm hlau.
• Haum rau nruab nrab thiab hnyav mechanical qhov chaw, shafts, thiab springs.

 

2. Subcritical Normalizing

 

▲ Subcritical Normalizing

 

Txhais: Subcritical normalizing, tseem hu ua subcritical lossis theem hloov chaw cua sov normalizing, heats low-carbon alloy steel rau qhov kub ntawm Ac1 thiab Ac3, tuav nws rau ib lub sijhawm, thiab tom qab ntawd cua txias.

 

Yam ntxwv:

• Ib nrab austenitization, ua rau zoo austenite thiab ferrite qauv.
• Tsis tuaj yeem tshem tawm tag nrho cov kev ua haujlwm tsis xws luag, tsim nyog rau kev tswj-dov steel daim hlau thiab cov hlau tsis zoo uas tsis muaj qhov tsis xws luag.
• Txhim kho lub toughness ntawm cov hlau, tab sis nrog tsawg refinement ntawm cov qauv.

 

3. Isothermal Normalizing

 

▲ Isothermal Normalizing

 

Txhais: Isothermal normalizing muaj cua sov cov hlau mus rau lub austenitizing kub, tuav nws ib pliag, sai txias nws mus rau pearlite transformation cheeb tsam, ua isothermal kev kho mob, thiab ces cua txias.

 

Yam ntxwv:

• Kev ua haujlwm qeeb thiab tswj kev ua kom txias, kev hloov pauv ntawm cov qauv zoo ib yam.
• Tsim cov qauv zoo dua pearlite thiab ferrite, txhim kho cov khoom siv ntawm cov hlau.
• Haum rau qhov chaw uas muaj kev ua tau zoo txhua yam uas yuav tsum tau ua, xws li lub zog thiab cov kabmob.

 

4. Kub-kub Normalizing

 

▲ Kub-kub Normalizing

 

Txhais: High-temperature normalizing muaj cua sov cov hlau mus rau qhov kub ntau dua li cov pa normalizing, feem ntau 900-950 degree, ua raws li cua txias tom qab austenitizing.

 

Yam ntxwv:

• Cov cua kub kub, cov nplej austenite loj tuaj, tab sis cov qauv zaum kawg tseem zoo tom qab txias.
• Haum rau tuab-walled castings nrog siab silicon cov ntsiab lus, uas yuav tsum tau cua los yog tsuag txias kom tsis txhob overheating.
• Qhov tseem ceeb txhim kho lub zog thiab hardness ntawm cov hlau, txawm tias toughness yuav txo qis me ntsis.

 

5. Dej-Cooled Normalizing

Txhais: Dej-txias normalizing yog txheej txheem kev kho cua sov uas cov dej siv los ua qhov nruab nrab cua txias kom ceev ceev, raws li cov pa normalizing.

 

Yam ntxwv:

• Cov cua txias ceev ceev, ua rau muaj cov qauv zoo zoo.
• Haum rau loj castings thiab forgings nrog cov duab yooj yim, uas tuaj yeem zam qhov tsim ntawm blocky ferrite los yog networked cementite thaum cua txias.
• Cov cua txias ceev yuav tsum tau ua tib zoo tswj kom tsis txhob tawg.

 

6. Cua-Cooled Normalizing

Txhais: Cua txias normalizing siv cua ncig kom ceev cov cua txias ceev ntawm steel qhov chaw.

 

Yam ntxwv:

• Cov cua txias ceev yog nyob nruab nrab ntawm huab cua txias thiab dej txias, thiab qhov cua txias tuaj yeem tswj tau los ntawm kev kho cov huab cua ntim.
• Haum rau txoj haujlwm zoo li qub, loj-loj workpieces, txo qhov nyiam deformation thiab tawg.
• Yooj yim rau kev khiav lag luam thiab tus nqi qis.

 

7. Txau normalizing

Lus Txhais: Txau normalizing siv cov dej tsis muaj zog siab ua kom txias nruab nrab kom txias txias rhuab steel qhov chaw.

 

Yam ntxwv:

• Tsis tshua muaj cua txias ceev, nrog rau cov nplej tseem ceeb refinement.
• Haum rau cov khoom uas muaj kev ua haujlwm siab heev thiab cov duab nyuaj.
• Cov cuab yeej siv nyiaj txiag siab thiab kev ua haujlwm nyuaj, yuav tsum muaj kev tswj hwm nruj ntawm cov tshuaj tsuag ntim thiab lub sijhawm txias.

 

 

III Kev siv ntawm Normalizing

 

Rau nruab nrab-carbon steel, normalizing yuav hloov quenching thiab tempering, npaj cov qauv rau high-frequency quenching, txo deformation, thiab txo nqi ua. Rau high-carbon steel, normalizing yuav tshem tawm networked cementite, yooj yim spheroidizing annealing. Rau cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau, normalizing tuaj yeem ua kom tawv tawv, txhim kho machinability. Rau cov hlau loj loj forgings lossis castings nrog kev hloov pauv loj ntawm ntu ntu, normalizing tuaj yeem hloov quenching kom txo tau qhov kev xav ntawm deformation thiab tawg, los yog npaj cov qauv rau quenching. Rau over-tempered steel qhov chaw, normalizing yuav tshem tawm overheating los, tso cai rau re-quenching. Rau cam khwb cia hlau qhov chaw, normalizing nce tus nqi ntawm pearlite nyob rau hauv lub matrix, txhim kho lub zog thiab hnav tsis kam ntawm cov castings.

 

Normalizing yog dav siv hauv kev lag luam xws li kev tsim khoom, kev tsim tsheb, aerospace, thiab cov khoom siv fais fab. Ntau qhov chaw hauv cov kev lag luam no muaj cov kev xav tau sib txawv, yog li cov txheej txheem normalizing yuav tsum raug xaiv.

 

Piv txwv li:

 

• Mechanical Manufacturing:Pa normalizing yog haum rau nruab nrab thiab hnyav mechanical qhov chaw, txhim kho lub zog thiab toughness ntawm qhov chaw. Isothermal normalizing yog haum rau high-precision iav thiab bearings, kom ntseeg tau hnav tsis kam thiab stability.
• Automotive Manufacturing:High-temperature normalizing yog siv rau cov khoom tseem ceeb xws li crankshafts thiab txuas rods, txhim kho lawv cov load-bearing muaj peev xwm thiab kev pab cuam lub neej. Dej-txias normalizing yog siv rau loj castings los tiv thaiv cov yam ntxwv tsis xws luag thaum huab cua txias.
• Aerospace:Cov khoom uas muaj cov khoom siv ua haujlwm siab heev, xws li cov cav ntoo thiab cov tshuab turbine discs, feem ntau siv tshuaj tsuag normalizing kom ua tiav cov khoom zoo tshaj plaws.
• Cov khoom siv fais fab:Isothermal thiab cua-txias normalizing yog ua ke los txhim kho corrosion thiab kev pab lub neej ntawm cov khoom siv fais fab.

 

 

IV Kev xaus

 

Raws li ib feem tseem ceeb ntawm cov txheej txheem kev kho cua sov, normalizing tuaj yeem txhim kho cov cuab yeej ntawm cov hlau thiab castings los ntawm ntau txoj kev thiab kev siv. Hauv kev tsim khoom tiag tiag, cov txheej txheem normalizing tsim nyog yuav tsum raug xaiv raws li cov cai tshwj xeeb thiab cov txheej txheem txheej txheem ntawm cov khoom kom ua tiav cov txiaj ntsig zoo tshaj plaws. Nyob rau hauv lub neej yav tom ntej, raws li cov ntaub ntawv tshawb fawb thiab kev kho cua sov thev naus laus zis txuas ntxiv mus, cov txheej txheem normalizing yuav ua rau muaj kev tsim kho tshiab thiab txhim kho, muab cov khoom siv zoo tshaj plaws thoob plaws ntau qhov kev lag luam.