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Forging Thaum Tshav Kub Kub Kho Kev Paub

Kev paub txog kev kho kom sov sov

Forging tshav ntuj kev kho mob kev paub - kev zam txim

Ua ntej, txhais kom meej:

Forging yog ib qho kev kho kub ua kom sov thiab kub siab txias, thiab nws lub hom phiaj yog ua kom cov workpiece muaj ib yam khoom zoo txhua yam.

Forging treatment: Tom qab quenching high temperature tempering tshav kub txoj kev kho mob lub npe hu ua forging kev kho mob. Kev kub siab txog kev kub ntxhov yog piv txwv txog tempering ntawm 500-650 ° C. Cov nplaum yuav ua rau cov khoom siv hlau, cov khoom siv rau kev hloov ntau dua, nws lub zog, kev tuav pov hwm thiab kev tuav lub zog zoo dua, nrog kev sib txuam txhua yam khoom. Forging kev kho mob kom tau tempered sorbite. Tempered sorbite yog tsim los ntawm tempering martensite thiab yog nce los ntawm ntau tshaj 500 rau 600 lub sij hawm nyob rau hauv ib qho kho qhov muag metallographic tsom. Nws yog tsi ntsees los ntawm kev faib khoom ntawm carbides nyob rau hauv lub ferrite matrix (nrog rau Cementite) pellets ntawm lub koom haum composite. Nws tseem yog ib lub koom txoos tswj kev tiv thaiv ntawm martensite, sib tov ntawm ferrite thiab granular carbides. Lub sij hawm no lub ferrite yeej tsis muaj cov roj supersaturation, carbide kuj yog ib qho ruaj carbide. Nyob rau hauv chav tsev kub yog ib lub koom haum haum.

Qhov thib ob, muab cov lus piv txwv tawm: 45 steel forgings

Forging feem ntau siv nyob rau hauv nruab nrab carbon (tsawg alloy) yam ntxwv hlau, kuj siv nyob rau hauv tsawg hlau alloy cam khwb cia. Nyob rau hauv luv luv, tus neeg kho tshuab raws cai ntawm high hlau yam yuav tsum tau forging processing. (Cov tawv nqaij thiab qhov kub nyhiab; thermal refining) Cov ntaub ntawv hlau yog ib qho txheej txheem kev kho thaum tshav kub kub. Cov ntaub ntawv nyob rau hauv kev quenching tom qab kub kub tempering hu ua forging kev kho mob. Lub hom phiaj yog ua kom cov hlau muaj lub siab muaj zog thiab txaus lub zog, nrog ib qho kev qhia txhua yam khoom zoo heev. Xws li ntsug ncej, ntsia hlau, iav thiab li ntawd. Feem ntau tom qab cov khoom nyob rau hauv cov ua, tab sis kuj tom qab ntxhib dawb rau cov neeg kho tshuab ua.

45 kev zam txim rau steel

45 steel yog cov pa sib xyaw hlau, kub thiab txias ua tau zoo, zoo mechanical zog, thiab tus nqi yog tsawg, dav qhov chaw, yog li dav siv. Qhov nws tsis loj tshaj plaws yog lub siab tawv, qhov loj me me thiab yuav tsum tau siv cov khoom ua haujlwm me me kuj tsis siv. 45 steel quenching nyob rau hauv A3 + (30 ~ 50) ℃, hauv kev xyaum, feem ntau siv lub siab txwv. Kev kub quenching siab tuaj yeem ua rau lub chaw ua hauj lwm cua sov, qhov chaw oxidation txo, thiab tuaj yeem txhim kho kev ua haujlwm. Yuav kom homogenize lub austenite ntawm lub workpiece, nws yog ib qhov tsim nyog kom muaj sij hawm txaus. Yog hais tias qhov muaj peev xwm muaj peev xwm loj heev, koj yuav tsum tau ntev lub sij hawm raug thaiv. Txwv tsis pub, tej zaum yuav muaj vim muaj cua kub tsis sib xws los ntawm qhov tshwm sim ntawm qhov tsis txaus. Tab sis lub sij hawm rwb thaiv tsev ntev heev, yuav muaj cov tuab tuab, oxidative decarburization loj ills, rau qhov zoo ntawm quenching. Peb ntseeg hais tias yog tias lub chaw ua cua sov muaj ntau dua cov kev cai ntawm cov txheej txheem ntawm tus txheej txheem, cua kub thiab cua sov kom ncav sij hawm txuas ntxiv mus 1 /

Vim 45 steel hardenability tsawg, yog li yuav tsum siv qhov txias txias ntawm 10% brine tov. Tom qab cov haujlwm workpiece mus rau hauv dej, nws yuav tsum tau tawv, tab sis tsis txias, yog hais tias lub chaw ua hauj lwm hauv cov dej txias hauv lub brine, nws yog qhov ua kom tawg tau cov workpiece, qhov no yog vim thaum lub chaw ua haujlwm txias txog 180 ℃, hloov mus rau hauv cov pob zeb nruj Ntau cov ntaub so ntswg los ntawm. Yog li ntawd, thaum lub quenching ntawm lub workpiece sai txias rau qhov kub thiab txias, nws yuav tsum tau txais kev qis txias txoj kev. Raws li qhov ntsuas kub tsis yooj yim, yuav tsum tau ua hauj lwm, thaum dej ntws hauv qhov chaw ua hauj lwm, koj tuaj yeem huab cua txias (xws li roj txias zoo dua). Tsis tas li ntawd, lub workpiece mus rau hauv dej yuav tsum tsis txhob txav mus zoo li qub, yuav tsum ua raws li tus duab geometric ntawm kev ua hauj lwm, rau kev khiav dej num. Nruab nrab txias txias nrog cov workpiece uas zoo li qub, ua rau tsis sib luag nyuaj, tsis txhawj xeeb txog kev ua haujlwm, los yog tawg. 45 plhom kev kho tom qab chwv quenching hardness yuav tsum ncav cuag HRC56 ~ 59, tseem tshuav cross section, tab sis tsis tsawg dua HRC48, txwv tsis pub, nws qhia tau hais tias lub workpiece tsis tag quenched, lub koom haum yuav tshwm sim sorbite los sis txawm ferrite, Lub koom haum no los ntawm tempering, tseem nyob hauv matrix, tsis rau lub hom phiaj ntawm forging.

45 steel tom qab quenching kub kub tempering, cua kub yog feem ntau yog 560 ~ 600 ℃, yuav tsum muaj hardness rau HRC22 ~ 34. Vim hais tias lub hom phiaj ntawm kev zam txim yog yuav tau txais cov khoom sib xyaw mechanical, yog li qhov nyuaj qhov dav yog dav. Tab sis cov kos duab muaj zog, nws tseem yuav tsum tau kho cov tempered kub raws li cov kos duab los xyuas kom meej qhov nyuaj. Yog tias qee qhov chaw seem yuav tsum muaj zog, kev xav hnyav ntawm lub siab; thiab qee lub zog, nrog cov qhov tseem ceeb ntawm qhov tseem ceeb, tab sis tseem forging tom qab lub milling, ntswj kev, kev ua kom nruj ntawm qis dua. Nyob rau ntawm lub sijhawm tuav lub sijhawm kub ntxhov, nyob ntawm seb qhov kev xav hnyav thiab kev ua haujlwm loj npaum licas, peb ntseeg tias qhov kev kub ntxhov tom qab kub hnyiab nyob ntawm qhov kub thiab txias, thiab lub sijhawm txias tsis yog, tiam sis yuav tsum rov qab los ntawm kev ua haujlwm ntawm kev kub ntxhov Ntau tshaj li ib teev.


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