Nyob rau hauv thiaj li yuav txhim kho lub nto hardness thiab hnav tsis kam ntawm16Mn plaub lub raj, kev kho deg, xws li nplaim hluav taws xob, qhov siab ntawm qhov chaw quenching, tshuaj kho cua sov, thiab lwm yam. Feem ntau hais lus, feem ntau ntawm qhov chaw siab thiab nruab nrab yog quenched, thiab cov cua kub kub yog 850-950 degrees. Vim tsis zoo thermal conductivity, cua kub ceev yuav tsum tsis txhob ceev heev. Txwv tsis pub, melting tawg thiab quenching tawg yuav tshwm. High zaus quenching yuav tsum tau lub normalized matrix mas pearlite. Cov tshuaj tsuag dej los yog polyvinyl cawv ua kom txias. Tempering kub yog 200-400 ℃, thiab hardness yog 40-50hrc, uas tuaj yeem ua kom cov tawv tawv thiab hnav tsis kamcev squarento.
Cov ntsiab lus tseem ceeb hauv qab no yuav tsum raug sau tseg thaum quenching16Mn square tub:
(1)Lub elongated yeeb nkab yuav tsum tsis txhob rhuab vertically nyob rau hauv lub ntsev da dej rauv los yog zoo rauv kom deb li deb tau, thiaj li yuav txo tau cov deformation los ntawm nws net hnyav.
(2)Thaum cov kav dej cua sov nrog cov seem sib txawv hauv tib lub qhov cub, cov kav dej me me yuav tsum muab tso rau ntawm qhov kawg ntawm lub qhov cub, thiab cov kav dej loj thiab cov kav dej me me yuav tsum tau teem caij sib cais.
(3)Txhua tus nqi them yuav tsum sib haum nrog lub hwj chim theem ntawm lub cub tawg. Thaum lub sij hawm pub mis yog loj, nws yog ib qho yooj yim rau pressurize thiab kub nce, thiab lub sij hawm cua sov yuav tsum tau ncua.
(4)Lub quenching kub ntawm square square raj quenched nrog dej los yog brine yuav tsum tau coj raws li qhov tsawg kawg nkaus txwv, thiab quenching kub ntawm cov roj los yog molten ntsev quenched yuav tsum tau coj raws li lub sab sauv txwv.
(5)Thaum lub sij hawm dual nruab nrab quenching, lub sij hawm nyob rau hauv thawj quenching nruab nrab yuav tsum tau tswj raws li saum toj no peb txoj kev. Lub sijhawm txav los ntawm thawj qhov nruab nrab quenching mus rau qhov nruab nrab quenching thib ob yuav tsum luv li sai tau, nyiam dua 0.5-2s.
(6)Cov kav dej uas nws qhov chaw raug txwv tsis pub oxidation lossis decarburization yuav tsum tau muab tso rau hauv lub qhov cub ntsev da dej lossis lub qhov cub tiv thaiv. Yog tias nws tsis ua raws li cov xwm txheej, nws tuaj yeem ua rau cua sov hauv qhov cub hluav taws xob, tab sis kev tiv thaiv yuav tsum tau ua.
(7)Tom qab 16Mn lub voj voos raj yog vertically rau hauv qhov nruab nrab quenching, nws tsis viav vias, txav mus thiab nqis, thiab nres qhov sib tov ntawm qhov nruab nrab quenching.
(8)Thaum lub peev xwm ua kom txias ntawm qhov chaw uas yuav tsum tau muaj zog hardness tsis txaus, tag nrho ib feem tuaj yeem muab tso rau hauv qhov nruab nrab quenching tib lub sijhawm, thiab cov khoom tuaj yeem ua kom txias los ntawm kev txau cov kua los txhim kho qhov txias txias.
(9)Nws yuav tsum tau muab tso rau hauv qhov chaw cua sov kom zoo. Tus nqi them, txoj kev them nqi thiab daim ntawv stacking yuav tsum xyuas kom meej tias cov cua kub tsis sib xws, thiab nws tsis tuaj yeem ua rau deformation thiab lwm yam tsis xws luag.
(10)Thaum cua sov hauv lub qhov cub ntsev, nws yuav tsum tsis txhob nyob ze rau ntawm lub electrode kom tsis txhob muaj cua sov hauv zos. Qhov kev ncua deb yuav tsum siab tshaj 30mm. Qhov kev ncua deb ntawm phab ntsa rauv thiab qhov tob tob hauv qab cov kua theem yuav tsum sib npaug li 30mm.
(11)Cov qauv hlau thiab cov pa roj carbon steel tuaj yeem ua kom sov ncaj qha rau hauv lub qhov cub nrog qhov kub thiab txias los yog 20-30 ℃ siab tshaj qhov kub quenching. High carbon thiab high alloy steel yuav tsum tau preheated ntawm txog 600 ℃ thiab ces tsa rau quenching kub.
(12)Qhov kub quenching tuaj yeem tsim nyog ntxiv rau cov kav dej nrog cov txheej txheej sib sib zog nqus, thiab qhov qis quenching tuaj yeem xaiv tau rau cov kav dej nrog cov txheej tuab tuab.
(13)Qhov saum npoo ntawm 16Mn square raj yuav tsum tsis muaj roj, xab npum thiab lwm yam av. Yeej, qhov kub ntawm cov dej yuav tsum tsis pub tshaj 40 ℃.
Post lub sij hawm: Sep-16-2022
