Yuav ua li cas AISI4145H Laum dab tshos tuaj yeem tiv thaiv kev tawg thiab cov khoom siv tshuab tau lees paub los ntawm qhov nruab nrab zaus quenching?

Hauv qhov pibAISI4145H Laum dab tshosnruab nrab zaus quenching txheej txheem, quenching thiab cracking scrapping tus nqi ntawm 70%, thiab txhua yam khoom tsis tsim nyog, rau qhov teeb meem no, nyob rau hauv ntau tshaj ob xyoos ntawm groping thiab ntau lawm xyaum, yeej daws tau qhov teeb meem, yog li muaj ib co kev pom.

Laum dab tshos khoom siv rau AISI4145H, tshuaj muaj pes tsawg leeg raws li qhia nyob rau hauv Table 1. Lub steel hardenability yog zoo, roj quenching yuav quenched Ø80mm, tom qab tempering muaj siab zoo txhua yam khoom, thiab yog ib tug raug roj quenching khoom.

Table 1 Tshuaj muaj pes tsawg leeg

Mechanical Properties ntawm lubAISI4145H Laum dab tshosyog teev nyob rau hauv SY/T5144-1997, raws li qhia nyob rau hauv Table 2, qhov ntev ntawm ib feem yog hais txog 10m.

Table 2 Mechanical zog ntawm laum dab tshos SY/T5144-1997 cov cai

(3) Cov khoom siv nruab nrab zaus induction tempering tau tsim nyob rau xyoo tas los no, cov cuab yeej tshwj xeeb rau kev kho cua sov ntawm cov ncej ntev, vim nws cov yam ntxwv ntawm cov qauv (tshwj tsis yog nyob rau hauv kev nthuav dav), hloov qhov sib sib zog nqus qhov cub, thiab txo qhov kev txhawb nqa peev, xws li siab dua mus txawv tebchaws crane lifting qhov siab ntawm lub rhiav, loj quenching tso tsheb hlau luam, calibration khoom, thiab lwm yam., muaj ib tug high degree ntawm kev hloov. Qhov tsuas yog qhov tsis txaus yog tias quenching coolant tuaj yeem siv cov dej ua kom txias.

(4) Txheej txheem.

Cov txheej txheem siv yog: quenching 840 ~ 860 degree, nrog kev txav ceev ntawm 0.2m / min los ntawm cov cua kub inductor, txias rau cov kais dej peb-theem tshuaj tsuag, dej kub 10 ~ 40 degree . Tom qab kev tsim khoom raws li cov txheej txheem no, cov txiaj ntsig tau txais yog qhia hauv Table 3

Table 3 Mechanical Properties

(5) Kev ntsuas thiab ntsuas.

AISI4145H yog cov khoom siv roj quenching, kev siv cov quenching me me thiab cov cua txias uas tuaj yeem ua tau raws li qhov yuav tsum tau quenching, tab sis nyob rau hauv nruab nrab zaus induction quenching khoom tam sim no siv nyob rau hauv cov kais dej, uas yuav inevitably nce lub quenching nyiam. Tus yuam sij rau kev tiv thaiv quenching thiab cracking yog los tuav tus nqi tsim nyog ntawm cov tshuaj tsuag dej kom ntseeg tau tias qhov tsim nyog quenching thiab txias npaum li cas.

Tsis tas li ntawd, kom ntseeg tau tias cov khoom siv kho tshuab, thawj kauj ruam yog los xyuas kom meej qhov zoo ntawm quenching. Yog hais tias qhov zoo ntawm quenching tsis siab, M transformation tsis txaus, lub hardness yog tsawg, tsis muaj peev xwm mus temper hloov kom tau zoo heev kev ua tau zoo. Yog li ntawd, lub quenching yuav tsum tsis txhob ua los ntawm kev txo qhov txias ceev, tab sis los ntawm kev txo qhov txias ceev nyob rau hauv lub premise ntawm guaranteeing lub quenching zoo, piv txwv li, nrhiav qhov sib npaug point ntawm qhov txias ceev yuav tsum tau lav lub quenching zoo thiab tiv thaiv cracking. Raws li lub tswv yim no, peb tau hu xov tooj los sau cov tshuaj tsuag dej, thiab ua cov kev ntsuam xyuas nrog cov dej sib txawv ntawm cov txheej txheem qub, thiab cov txiaj ntsig tau qhia hauv Table 4.

Table 4 Kev sim tau tshwm sim ntawm cov dej sib txawv

Lus Cim: Cov nplai "4" thiab "5.5" nyob rau hauv cov ntawv nyeem yog cov ntaub ntawv hu thiab tsis sawv cev rau pes tsawg tus dej txau.

Raws li tau pom los ntawm Table 4, tsis muaj cov kab nrib pleb tshwm sim tom qab tswj cov tshuaj tsuag dej, qhia tau hais tias txo cov quenching cua txias tuaj yeem daws qhov teeb meem tawg. Txawm li cas los xij, hauv qhov sib txawv ntawm cov tshuaj tsuag dej, cov txiaj ntsig muaj qee qhov sib txawv:

Cov dej txau ntawm "4", muaj qhov ntsuas lub zog thiab qhov ntsuas toughness yog qhov tsis tsim nyog tshwm sim, teej tug mus rau lub koom haum quenching tsis tau zoo dua, qhia tias qhov txias txias yog muab los ntawm cov me me; Cov tshuaj tsuag dej ntawm "5.5", qhov ntsuas tau tsim nyog, qhia tias qhov kev ua kom txias ceev tau mus txog qhov sib npaug ntawm qhov yuav tsum tau ua.

Hauv cov txheej txheem tsim khoom thiab kuaj pom tau tias cov khoom siv AISI4145H muaj qee yam kev xav rau kev npau taws, tshwj xeeb yuav tsum tau them rau cov cua txias yuav tsum muab cov cua txias txaus, txhawm rau tiv thaiv Akv txo.

Ua ntej roughly hais txog lubAISI4145H Laum dab tshosnruab nrab zaus induction tempering txheej txheem ntau lawm, los tiv thaiv quenching cov kab nrib pleb thiab xyuas kom meej cov khoom ntawm qee cov tswv yim thiab cov txheej txheem, uas kuj yog me ntsis ntawm peb cov kev paub dhau los hauv kev sim ntau lawm. Kev ua raws li cov txheej txheem tshwj xeeb, tseem yuav tsum tau ua raws li cov txheej txheem ntawm cov khoom siv, kev ruaj ntseg ntawm cov khoom siv hluav taws xob, dej kub, thiab lwm yam kev txiav txim siab, suav nrog cov ntsiab lus ntawm kev ua haujlwm, suav nrog kev tsim cov txheej txheem ntxaws ntxaws kom ua tau raws li qhov yuav tsum tau ua. cov khoom kos duab.

Tau qhov twg los: Metalworking (Thermal Processing) Magazine