Yuav kom txhim kho qhov tawv ntawm qhov chaw thiab hnav tsis kam ntawm16Mn cov raj plaub fab, kev kho qhov chaw, xws li nplaim taws ntawm qhov chaw, kev quenching ntawm qhov chaw siab, kev kho cua sov ntawm cov tshuaj lom neeg, thiab lwm yam yuav tsum tau ua rau cov raj plaub fab. Feem ntau hais lus, feem ntau ntawm cov nplaim siab thiab nruab nrab zaus raug quenched, thiab qhov kub ntawm cua sov yog 850-950 degrees. Vim yog qhov tsis zoo thermal conductivity, qhov ceev ntawm cua sov yuav tsum tsis txhob ceev dhau. Txwv tsis pub, cov kab nrib pleb yaj thiab cov kab nrib pleb quenching yuav tshwm sim. Kev quenching ntawm qhov chaw siab yuav tsum tau hais tias cov matrix normalized feem ntau yog pearlite. Dej tsuag lossis polyvinyl cawv kua txias. Qhov kub tempering yog 200-400 ℃, thiab qhov nyuaj yog 40-50hrc, uas tuaj yeem ua kom qhov nyuaj thiab hnav tsis kam ntawmlub raj plaub fabnto.
Cov ntsiab lus tseem ceeb hauv qab no yuav tsum tau sau tseg thaum quenching16Mn lub raj plaub fab:
(1)Cov yeeb nkab ntev yuav tsum tsis txhob raug cua sov ntsug hauv lub cub tawg ntsev lossis lub cub tawg kom deb li deb tau, kom txo qhov deformation los ntawm nws qhov hnyav.
(2)Thaum cua sov cov kav dej uas muaj ntau ntu hauv tib lub cub tawg, cov kav dej me me yuav tsum muab tso rau ntawm qhov kawg sab nraud ntawm lub cub tawg, thiab cov kav dej loj thiab cov kav dej me me yuav tsum tau teem sijhawm sib cais.
(3)Txhua qhov them nqi yuav tsum sib xws nrog lub zog ntawm lub cub tawg. Thaum cov khoom noj ntau, nws yooj yim rau kev nias thiab kub nce, thiab lub sijhawm ua kom sov yuav tsum tau ntev dua.
(4)Qhov kub quenching ntawm cov raj plaub fab plaub fab uas quenched nrog dej lossis brine yuav tsum raug coj los ua qhov txwv qis dua, thiab qhov kub quenching ntawm roj lossis ntsev molten quenched yuav tsum raug coj los ua qhov txwv siab dua.
(5)Thaum lub sijhawm tua hluav taws xob ob chav, lub sijhawm nyob hauv thawj qhov chaw tua hluav taws xob yuav tsum raug tswj raws li peb txoj kev saum toj no. Lub sijhawm txav mus los ntawm thawj qhov chaw tua hluav taws xob mus rau qhov thib ob qhov chaw tua hluav taws xob yuav tsum luv li sai tau, zoo dua yog 0.5-2 vib nas this.
(6)Cov kav dej uas tsis pub oxidation lossis decarburization ntawm qhov chaw yuav tsum tau cua sov rau hauv lub cub tawg ntsev lossis lub cub tawg tiv thaiv huab cua. Yog tias nws tsis ua raws li cov xwm txheej, nws tuaj yeem cua sov rau hauv lub cub tawg tiv thaiv huab cua, tab sis yuav tsum tau ua cov kev ntsuas tiv thaiv.
(7)Tom qab lub raj 16Mn rectangular raug vertically immersed rau hauv qhov nruab nrab quenching, nws tsis viav vias, txav mus rau saum thiab nqis, thiab nres qhov kev nplawm ntawm qhov nruab nrab quenching.
(8)Thaum lub peev xwm txias ntawm cov khoom uas xav tau kev nyuaj siab tsis txaus, tag nrho cov khoom tuaj yeem raug muab tso rau hauv qhov nruab nrab quenching tib lub sijhawm, thiab cov khoom tuaj yeem txias los ntawm kev txau kua kom txhim kho qhov ceev txias.
(9)Yuav tsum muab tso rau hauv qhov chaw uas muaj cua sov zoo. Tus nqi them, txoj kev them thiab daim ntawv teeb tsa yuav tsum ua kom qhov kub ntawm cua sov sib npaug, thiab nws tsis tuaj yeem ua rau muaj kev hloov pauv thiab lwm yam tsis zoo.
(10)Thaum ua kom sov hauv lub cub tawg ntsev, nws yuav tsum tsis txhob nyob ze rau lub electrode kom tsis txhob kub dhau. Qhov deb yuav tsum siab dua 30 hli. Qhov deb ntawm phab ntsa cub tawg thiab qhov tob hauv qab qib kua yuav tsum sib npaug li 30 hli.
(11)Cov hlau ua vaj tse thiab cov hlau carbon tuaj yeem ua kom sov ncaj qha rau hauv lub cub tawg uas muaj qhov kub quenching lossis siab dua 20-30 ℃ dua li qhov kub quenching. Cov hlau carbon siab thiab cov hlau alloy siab yuav tsum tau preheated ntawm li 600 ℃ thiab tom qab ntawd tsa mus rau qhov kub quenching.
(12)Qhov kub quenching tuaj yeem nce ntxiv kom haum rau cov kav dej uas muaj txheej tawv tob, thiab qhov kub quenching qis dua tuaj yeem xaiv rau cov kav dej uas muaj txheej tawv ntiav.
(13)Qhov saum npoo ntawm 16Mn square tube yuav tsum tsis muaj roj, xab npum thiab lwm yam av qias neeg. Yeej, qhov kub ntawm dej yuav tsum tsis pub tshaj 40 ℃.
Lub sijhawm tshaj tawm: Cuaj hlis-16-2022
