Annealing hauv Kev Kho Hniav Kub: Ib qho Kev Qhia
Annealing yog dab tsi?
Annealing yog txheej txheem kev kho cua sov siv los hloov lub cev thiab qee zaum tshuaj lom neeg ntawm cov khoom, feem ntau yog hlau (Nickel alloy,stainless hlau yeeb nkab, tube, phaj, bar). Lub hom phiaj tseem ceeb ntawm annealing yog txo qis hardness, txhim kho ductility, txo cov kev ntxhov siab sab hauv, thiab ua kom zoo dua cov qauv nplej, ua rau cov khoom siv tau zoo dua rau cov txheej txheem tsim khoom tom ntej.
Annealing txheej txheem Peb theem tseem ceeb:
1. Cua sov: Cov khoom yog rhuab mus rau ib tug tshwj xeeb kub qhov twg recrystallization yuav tshwm sim. Qhov ntsuas kub no feem ntau yog siab dua cov khoom siv rov ua dua tshiab tab sis qis dua nws qhov melting point.
2. Soaking: Cov khoom yog tuav ntawm qhov kub ntawm qhov annealing rau ib lub sij hawm kom tso cai rau kev hloov pauv. Lub sijhawm soaking nyob ntawm cov khoom siv thiab cov khoom xav tau.
3. Txias: Cov khoom yog txias ntawm tus nqi tswj. Cov cua txias tuaj yeem ua tiav hauv qhov cub (qhov cub txias), hauv huab cua (cua txias), lossis siv lwm qhov nruab nrab xws li roj lossis dej (quenching). Tus nqi cua txias cuam tshuam rau qhov kawg ntawm cov khoom.
Annealing yog dab tsi: Hom Annealing
1. Full Annealing: Involves heating the material above its critical temperature, holding it there, and then slowly cooling it in the furnace. Cov txheej txheem no tsim cov qauv ntxhib pearlitic, ua rau cov khoom muag muag thiab ductile.
2. Txheej txheem Annealing: Siv feem ntau rau qis- carbon steels, cov txheej txheem no yuav tsum ua kom sov cov khoom hauv qab nws qhov kub thiab txias, tuav nws, thiab tom qab ntawd txias hauv huab cua. Nws feem ntau yog siv los kho cov ductility tom qab ua haujlwm txias.
3. Stress Relief Annealing: Cov khoom yog rhuab mus rau qhov kub thiab txias, feem ntau hauv qab nws cov recrystallization point, los txo cov kev ntxhov siab sab hauv yam tsis hloov nws cov qauv. Qhov no feem ntau yog siv rau cov khoom uas tau ua tiav vuam lossis machining.
4. Spheroidizing Annealing: Ua rau siab - carbon steels, cov txheej txheem no cuam tshuam nrog cov cua sov ntev ntawm qhov kub thiab txias qis dua qhov tseem ceeb los tsim cov spheroidized microstructure, uas txhim kho kev ua haujlwm thiab kev tsim kho.
5. Isothermal Annealing: Cov khoom yog rhuab mus rau qhov kub siab tshaj nws cov ntsiab lus tseem ceeb, ces txias sai sai rau qhov kub ntawm qhov kub ntawm eutectoid thiab tuav nyob ntawd kom txog thaum kev hloov pauv tiav. Thaum kawg, nws yog txias rau chav tsev kub. Cov txheej txheem no ua rau muaj kev sib txuam microstructure thiab txhim kho cov khoom siv kho tshuab.
Sib piv: Annealing vs. Normalizing vs. Hardening
| Kev kho cua sov hom | Hom cua sov ntau yam | Txoj kev txias | Ua rau Mechanical Properties |
| Annealing | Saum toj lossis qis dua qhov tseem ceeb | qeeb heev (Lub qhov cub txias) | Tsawg hardness, siab tshaj plaws ductility, xoom residual kev nyuaj siab. |
| normalizing | 30℃-50℃saum toj kawg nkaus tseem ceeb | Uniform txias nyob rau hauv tseem huab cua | Fine grain qauv, siab yield zog tshaj annealing. |
| Hardening (zeeg) | Saum toj no tseem ceeb transformation ntau yam | Ceev ceev quenching (dej, roj, los yog polymer) |
Maximum hardness, siab brittleness; yuav tsum tau tempering tom ntej. |
Cov txiaj ntsig ntawm Annealing:
- Txhim kho Ductility: Annealing ua rau kom cov ductility ntawm cov ntaub ntawv, ua rau lawv ntau pliable thiab yooj yim rau kev ua hauj lwm nrog thaum lub sij hawm tsim cov txheej txheem tom ntej.
- Txo Hardness: Los ntawm softening cov khoom, annealing txo hardness, ua machining, sib sau, thiab shaping yooj yim dua.
- Relieved Internal Stresses: Cov txheej txheem yuav pab tshem tawm cov kev ntxhov siab sab hauv uas tuaj yeem txhim kho thaum lub sij hawm casting, vuam, los yog machining, tiv thaiv kev cuam tshuam thiab kev ua tsis tiav.
- Refined Grain Structure: Annealing tuaj yeem kho cov qauv nplej, txhim kho cov khoom siv kho tshuab thiab kev ua haujlwm tag nrho ntawm cov khoom.
- Enhanced Machinability: Cov ntaub ntawv softer yog yooj yim dua los txiav thiab zoo, txhim kho kev ua haujlwm ntawm machining.
Koj tus khub rau Rigorously Certified, Thaum tshav kub kub-Thiab Piping Products
Ntawm HT PIPE, peb tsis yog muab cov hlau xwb; peb xyuas kom meej tias txhua yam khoom sib tw raws li cov qauv kev xav tau ntawm koj qhov chaw ua haujlwm. Tag nrho peb cov yeeb nkab steel seamless, forged qhov muag tsis pom flanges, thiab cov phaj hnyav tau dhau los ua cov txheej txheem thermal nruj uas tau lees paub los ntawm kev puas tsuaj siab heev thiab tsis yog -kev kuaj kev puas tsuaj (NDT).
Ua kom tiav cov khoom Scope:
Carbon & Alloy hlau:ASTM A106 Gr. B, A333 Gr. 6, A335 P91/P11/P22 Pipes
Stainless & Duplex Alloys:321, 347H, 904L, 254SMO, Duplex 2205, Super Duplex S32760
High -Nickel Materials:Monel 400, Inconel 625, Incoloy 825, Hastelloy C276 / C2000
