Laser quenching tau dhau los ua lub hauv paus ntawm qhov chaw hardening rau cov khoom lag luam -los ntawm iav rings mus rau pwm kab noj hniav -ua tsaug rau nws cov precision thiab tsawg kub distortion. Txawm li cas los xij, txawm tias cov txheej txheem quenching siab tshaj plaws tuaj yeem ua tsis tau raws li cov txiaj ntsig tsis muaj kev tswj xyuas zoo (QC). Hauv qab no, peb rhuav tshem cov lus qhia ua tau zoo los txheeb xyuas thiab tswj xyuas qhov zoo ntawm laser quenching, los ntawm cov kev sim mus rau cov txheej txheem ua haujlwm.
I. Tsis yog-Txoj kev kuaj kev puas tsuaj rau quenching txheej hardness
Hardness yog thawj qhov taw qhia ntawm kev ua tiavLaser Quenchingkev kho mob, tab sis kev ntsuam xyuas kev puas tsuaj (xws li, txiav cov qauv) yog qhov ua tsis tau zoo rau cov khoom muaj txiaj ntsig siab -. Tsis yog-kev kuaj kev puas tsuaj (NDT) muaj lwm txoj hauv kev txhim khu kev qha:
1.Ultrasonic Hardness Test: Siv lub suab yoj tshaj tawm los ntsuas qhov nyuaj yam tsis muaj kev puas tsuaj rau lub workpiece; zoo tagnrho rau qhov loj xws li kis tau tus mob shafts.
2.Eddy Current Testing: Txheeb xyuas qhov sib txawv hardness los ntawm kev ntsuas cov kev hloov hauv hluav taws xob conductivity (cov ntaub ntawv nyuaj dua muaj cov conductivity qis dua); zoo tshaj plaws rau me me, complex Cheebtsam xws li pinions.
3.Leeb Hardness Testing: Ib qho kev xaiv nqa tau yooj yim uas suav cov hardness los ntawm qhov rov qab nrawm ntawm qhov ntsuas ntsuas - zoo meej rau ntawm - qhov chaw soj ntsuam ntawm cov pwm mounted lossis iav sib dhos.
Ⅱ. Kev ntsuas kub -Tshwj xeeb thaj tsam dav nrog Microscopic Examination
Lub tshav kub- thaj chaw cuam tshuam (HAZ)- thaj chaw nyob ib sab ntawm cov txheej txheem quenched- tuaj yeem ua rau deformation lossis txo cov khoom siv zog yog tias dav dhau. Ntsuas nws:
1.Extract ib tug me me, tus qauv piv txwv los ntawm ib tug tsis yog - cheeb tsam tseem ceeb ntawm cov khoom (los yog siv ib tug xeem daim coupon khiav nrog tib yam tsis).
2.Polish thiab etch tus qauv los qhia qhovLaser Quenchingtxheej, HAZ, thiab cov khoom siv ciam teb.
3.Siv lub tshuab ntsuas metallurgical los ntsuas HAZ dav; rau feem ntau ntawm cov khoom lag luam, HAZ ntawm 0.1-0.5 hli yog qhov tau txais (tseem txwv nyob ntawm cov khoom siv thiab daim ntawv thov).
Ⅲ. Cov kev tsis zoo uas tsis zoo thiab lawv cov kev tiv thaiv
Txawm me me inconsistencies nyob rau hauvLaser Quenchingtuaj yeem ua rau cov khoom tsis ua haujlwm. Nov yog cov teeb meem tseem ceeb thiab kho:
1. Tsis tiav Hardening: Ua los ntawm lub zog laser tsis txaus lossis qeeb scanning ceev. Kev Tiv Thaiv: Calibrate laser tso zis ua ntej txhua qhov kev khiav thiab txheeb xyuas qhov tsis zoo ntawm cov khoom siv tshwj xeeb.
2.Cracking nyob rau hauv quenched txheej: Stemming los ntawm txias ceev los yog ntau zog. Kev Tiv Thaiv: Siv kev tiv thaiv roj (piv txwv li, argon) los tswj cov cua txias, thiab preheat siab - carbon steels.
3.Uneven Hardness Distribution: Feem ntau vim yog misaligned laser tsom. Kev Tiv Thaiv: Ua kom pom tseeb nrog cov phaj xeem ua ntej ua cov khoom ua haujlwm.
Ⅳ.Tsim kom muaj txheej txheem Laser Quenching zoo soj ntsuam
Kev sib raug zoo pib nrog cov txheej txheem ua haujlwm. Cov txheej txheem QC muaj zog yuav tsum muaj xws li:
1. Ua ntej-Txoj kev kuaj xyuas: Txheeb xyuas lub zog laser, scanning ceev, thiab cov roj ntws; tshuaj xyuas qhov chaw ua haujlwm rau cov khoom paug (xws li, roj, xeb) uas tuaj yeem cuam tshuam quenching.
2.Nyob hauv -Txoj Kev Saib Xyuas: Siv lub sijhawm tiag tiag - ntsuas kub ntsuas los taug qab cua sov saum npoo; ncua kev ua haujlwm yog tias nyeem ntawv sib txawv ntawm cov hom phiaj.
3.Post-Cov ntaub ntawv txheej txheem: Sau tag nrho cov kev txwv (hwj chim, ceev, HAZ dav, hardness qhov tseem ceeb) thiab cov ntaub ntawv khaws cia rau traceability -tseem ceeb rau tsheb lossis aerospace Cheebtsam uas yuav tsum tau ua raws li nruj me ntsis.
Ⅴ.Xaiv cov cuab yeej ntsuas kev tshaj lij kom tau txais qhov tseeb
Kev nqis peev hauv cov cuab yeej zoo kom ntseeg tau QC cov ntaub ntawv:
1.RauLaser Quenchingkuaj: Xaiv rau aDigital Leeb hardness tester(piv txwv li, Krautkramer PHT-3500) rau kev txav mus los, lossis amicrohardness tester(piv txwv li, Wilson VH1102) rau siab -kev ntsuas qhov tseeb ntawm cov txheej nyias nyias.
2 Rau kev soj ntsuam microscopic: Ametallurgical microscope nrog duab tsom xam software(piv txwv li, Olympus BX53M) ua kom yooj yim HAZ dav ntsuas thiab cov ntaub ntawv tsis raug.
3 NDT: Ibeddy tam sim no flaw detector(piv txwv li, Zetec MIZ-20D) tuaj yeem txheeb xyuas ob qho tib si hardness variations thiab zais cov kab nrib pleb hauv ib qho scan.
Los ntawm kev sib txuas cov phiaj xwm kev sim, kev tiv thaiv tsis xws luag, thiab cov txheej txheem txheej txheem, cov tuam ntxhab tuaj yeem ua kom lub laser quenching xa cov hardness, durability, thiab sib xws uas yuav tsum tau muaj rau cov khoom tseem ceeb.