Xov Xwm - Kev Tshuaj Xyuas Ntxiv Txog Kev Kho Mob Kub ntawm Cov Saw Txuas, Lub Zog Rhuav thiab Kev Ntev

Qhov sib npaug ntawm lub zog thiab kev ywj pheej hauv cov saw hlau nqa khoom zoo li G80 thiab G100 yog tswj hwm los ntawm lawv txoj kev kho cua sov. Kev ua tiav lub zog tensile siab dua (txav ntawm G80 mus rau G100) yog txuam nrog kev pauv pauv hlau uas cuam tshuam ncaj qha rau kev ntev thiab kev tawv.

Lub Ntsiab Cai Tseem Ceeb: Kev Sib Hloov Zog-Kev Nyhav

Qhov sib txawv ntawm G80 thiab G100 yog txoj cai tseem ceeb ntawm kev lag luam hlau: kev nce lub zog (qhov nyuaj) feem ntau txo qhov ductility (elongation). Qhov no raug tswj yuav luag tag nrho los ntawm kev kho cua sov, uas tswj cov qauv me me ntawm cov hlau.

- Lub Hom Phiaj: Hloov cov qauv "pearlite-ferrite" mos mos, ductile ntawm cov hlau uas tsis muaj carbon mus rau hauv cov "martensite tempered" uas muaj zog dua.

- Txheej Txheem: Cov saw hlau txuas puag ncig raug austenitized ua ntej (ua kom sov rau qhov kub siab), tom qab ntawd quenched (txias sai) los tsim cov qauv microstructure uas nyuaj heev tab sis brittle hu ua martensite. Thaum kawg, nws raug tempered (rov ua kom sov rau qhov kub nruab nrab) kom rov qab qee qhov ductility thiab toughness.

- Kev Sib Pauv: Qhov kub siab dua ua rau muaj kev ywj pheej tab sis txo qis lub zog. Qhov kub qis dua ua rau muaj zog dua tab sis ua rau muaj kev ywj pheej qis dua. Qhov no yog lub zog tseem ceeb uas siv los sib txawv G80 ntawm G100 saw hlau.

Kev Kho Mob Kub Saw hauv Kev Xyaum: G80 vs. G100

Nrog cov ntaub ntawv siv sib txawv (20Mn2 rau G80 saw hlau raws li ib txwm muaj thiab SAE8620 rau G100 saw hlau), cov kev kho cua sov raug kho kom zoo.

Kev Cuam Tshuam rau Kev Ua Tau Zoo & Cov Lus Qhia Txog Kev Xaiv

Qhov kev sib txawv no qhia txog lawv cov kev siv zoo tshaj plaws:

- G80 saw hlau (Tus "Tough" Performer): Nws qhov kev ntev zoo heev ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev nqa khoom uas muaj zog, muaj kev cuam tshuam loj, lossis tsis tuaj yeem kwv yees tau (piv txwv li, kev tsim kho, chaw nres nkoj, kev tuav pov tseg). Nws lub peev xwm los nqus lub zog thiab deform ua ntej tawg muab cov lus ceeb toom tseem ceeb txog kev nyab xeeb ntawm lub cev thiab lub cev.

- G100 saw hlau (Tus Kws Tshwj Xeeb "Muaj Zog"): Nws qhov sib piv ntawm lub zog thiab qhov hnyav siab dua yog qhov zoo tagnrho rau cov ntawv thov uas qhov muaj peev xwm thauj khoom yog qhov tseem ceeb thiab kev txav mus los tau tswj hwm ntau dua (piv txwv li, cov cranes saum toj kawg nkaus hauv cov chaw tsim khoom, cov hoists qhov twg qhov hnyav txo qis yog qhov zoo). Tus neeg siv yuav tsum paub tias nws qhov elongation qis dua txhais tau tias nws ua haujlwm ze rau nws qhov txwv kawg tom qab tso tawm.

Yuav kom xaiv tau qib zoo, koj ua tau raws li cov laj thawj no:

Ib Daim Ntawv Ceeb Toom Tseem Ceeb Txog Kev Nyab Xeeb ntawm "Over-Tempering"

Qee zaum muaj ib qho kev coj ua txaus ntshai thiab tsis ua raws li txoj cai hauv kev ua lag luam: muag cov saw hlau qib qis dua ua qib siab dua los ntawm kev ua kom nws tsis kub dhau (lossis hla kev ua kom kub dhau). Piv txwv li, cov saw hlau uas tau tua hluav taws tab sis tsis tau ua kom kub txaus yuav ua rau G100 lub zog tawg. Txawm li cas los xij, nws qhov ntev yuav qis heev (tej zaum 5-8%), thiab nws yuav tawg heev. Qhov no yog vim li cas kev sim ob qho tib si lub zog tawg thiab kev ntev tsis yog qhov sib tham rau daim ntawv pov thawj kev nyab xeeb ntawm cov saw hlau - ib tus lej ib leeg tsis lav qhov zoo tiag tiag lossis tus cwj pwm nyab xeeb ntawm cov saw hlau.

Txoj kev taug kev los ntawm G80 mus rau G100 yog ib qho ntawm kev sib haum xeeb thiab xam tau zoo. Los ntawm kev txo qhov kub ntawm kev kub ntxhov, cov chaw tsim khoom " pauv " qee qhov ntawm qhov ductility thiab kev nyab xeeb rau qhov muaj peev xwm thauj khoom ntau dua. Qhov kev xaiv zoo tshaj plaws nyob ntawm seb daim ntawv thov puas xav tau qhov siab tshaj plaws (G80) lossis qhov siab tshaj plaws lub zog (G100).

Txawm li cas los xij, ib tug neeg yuav xav txog kev quenching tsuas yog rau cov saw hlau sib txuas kom ua tiav qhov nyuaj zoo thaum lees txais lub zog tsawg dua rau qee cov ntawv thov conveyor saw.

Kev ua tiav qhov nyuaj ntawm kwv yees li 50 HRC los ntawm kev kho cua sov tsuas yog ua tau. Txawm li cas los xij, rau cov saw hlau uas yuav muaj kev thauj khoom ntau, hla dhau qhov kauj ruam tempering ua rau muaj kev pheej hmoo loj ntawm kev ua tsis tiav thiab kev ua tau zoo tsis paub tseeb.

Cov lus hauv qab no piv cov khoom ntawm cov hlau hauv lub xeev uas tau quenched piv rau tom qab tempering kom raug:

Cov Kev Pheej Hmoo Tseem Ceeb ntawm Kev Ua Kom Kub Xwb

Lub hardness siab los ntawm tus nqi ntawm lwm cov khoom tseem ceeb:

- Kev Nyuaj Siab Loj: Cov martensite uas tau quenched, tshwj xeeb tshaj yog los ntawm cov hlau medium-carbon, muaj qhov ductility qis heev. Ib txoj saw hlau tuaj yeem tawg yam tsis muaj lus ceeb toom lossis hloov pauv yas.

- Qhov Loj Tsis Ruaj Khoov: Kev ntxhov siab sab hauv siab tuaj yeem ua rau muaj kev cuam tshuam lossis tawg, txawm tias tam sim ntawd tom qab quenching lossis tom qab kev pabcuam.

- Kev rhiab heev rau qhov tsis zoo: Cov khoom siv tawg yooj yim rhiab heev rau qhov nkhaus, khawb, lossis qhov tsis zoo me me ntawm kev tsim khoom, uas tuaj yeem ua rau muaj qhov tawg.

Cov Kev Qhia Kom Ua Tau Raws Li Koj Lub Hom Phiaj

Es tsis txhob tshem tawm kev ua kom sov, xav txog cov hau kev nyab xeeb dua thiab tswj tau no:

1. Xaiv Cov Hlau Alloy Leaner: Rau cov saw hlau uas muaj zog ntawm Qib 30 (≈ 300 MPa) thiab Qib 50 (≈ 500 MPa) nrog 50 HRC hardness, cov hlau alloy uas muaj carbon tsawg lossis carbon tsawg (xws li 20CrNiMo lossis 20Mn2) zoo dua. Thaum quenched, lawv tsim cov martensite uas muaj carbon tsawg, uas muaj kev sib xyaw ua ke zoo dua ntawm lub zog siab (txog li ~ 1300 MPa yield) thiab kev tawv zoo ntawm qib hardness ntawm 45-50 HRC.

2. Siv Qhov Kub Qis: Yog tias siv cov hlau uas muaj cov pa roj carbon nruab nrab, qhov kub luv luv (piv txwv li, 150-250 ° C) tuaj yeem txo qhov kev ntxhov siab sab hauv uas txaus ntshai tshaj plaws thiab txhim kho qhov tawv me ntsis nrog kev txo qis tsawg kawg nkaus rau koj lub hom phiaj 50 HRC.

3. Xav txog Cov Txheej Txheem Siab Tshaj Plaws: Rau qhov sib npaug zoo tshaj plaws, tshawb nrhiav cov txheej txheem Quenching thiab Partitioning (Q&P). Nws yog tsim los ua kom muaj zog heev thaum tseem khaws cia qhov ruaj khov siab dua los ntawm kev ruaj khov austenite uas khaws cia.

Txawm hais tias quenching ib leeg tuaj yeem ntaus koj tus lej hardness, nws tsim cov saw hlau uas tsis zoo rau kev siv tiag tiag.

Lub sijhawm tshaj tawm: Lub Ib Hlis-19-2026

Kev Tshuaj Xyuas Ntxiv Txog Kev Kho Mob Kub ntawm Cov Saw Txuas Round, Lub Zog Rhuav thiab Kev Ntev