Residual Stress Detection Methods

 

Qhov muag tsis pom - Qhov Txoj Kev
Ua ntej thiab tom qab kev vibration kev ntxhov siab - kev kho mob, qhov qhov muag tsis pom kev yog drilled rau saum npoo ntawm LR eH32 steel workpieces. Lub lim tawm ib ncig ntawm lub qhov thaum lub sij hawm drilling txheej txheem yog ntsuas los ntawm strain gauges thiab cov residual stress yog xam raws li txoj kev xav ntawm elasticity. Yog hais tias qhov kev vibration kev nyuaj siab - kev kho mob zoo so kom txaus thiab homogenizes residual kev nyuaj siab, lub internal kev nyuaj siab lub xeev ntawm cov khoom raug hloov thiab nws yuav muaj feem xyuam rau lub hardness. Qhov kev cuam tshuam no tuaj yeem suav tau los ntawm kev sib piv cov lej hloov pauv ntawm cov kev ntxhov siab seem ua ntej thiab tom qab kho. Piv txwv li, qhov txo qis ntawm qhov seem ntawm qhov kev ntxhov siab tuaj yeem cuam tshuam nrog kev hloov ntawm hardness. Yog tias qhov seem ntawm qhov kev ntxhov siab txo qis, cov khoom siv hardness yuav nce ntxiv vim qhov kev txhim kho ntawm lub xeev kev ntxhov siab.

 

X - Ray Diffraction Method (XRD)
Cov khoom nto yog irradiated nrog X-rays. Raws li Bragg txoj cai lij choj (, qhov twg yog qhov kev txiav txim diffraction, yog X - ray wavelength, yog inter - planar spacing, thiab yog lub diffraction lub kaum sab xis), lub displacement thiab tag nrho dav ntawm ib nrab - qhov siab tshaj plaws ntawm lub diffraction ncov yog ntsuas los txiav txim. lub internal residual kev nyuaj siab ntawm cov khoom. XRD tsis tuaj yeem ntsuas qhov kev ntxhov siab seem ntawm qhov chaw ntawm cov khoom siv thiab ntsuas qhov cuam tshuam ntawm kev vibration kev ntxhov siab - kev kho mob ntawm cov kev ntxhov siab residual. Yog tias qhov seem seem raug txo qis tom qab kev kho mob, cov khoom hardness yuav hloov. Los ntawm kev tsim cov qauv kev sib raug zoo ntawm qhov seem ntawm qhov kev ntxhov siab thiab qhov nyuaj (uas tuaj yeem tau txais los ntawm kev siv cov ntaub ntawv sim), qhov kev cuam tshuam no tuaj yeem suav tau.

 

 

 

 

 

LR/FH32 siab zog tshuaj muaj pes tsawg leeg
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al	N
LR/FH32	0.16	0.05	0.9-1.6	0.025	0.025	0.015
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02	0.35	0.20	0.80	0.08

 

 

Mechanical Property Test Methods

 

 

Impact Test
Qhov cuam tshuam toughness ntawm cov khoom yog ntsuas los ntawm kev ntsuas kev cuam tshuam. Muaj qee qhov kev sib raug zoo ntawm kev cuam tshuam toughness thiab cov khoom hardness. Feem ntau hais lus, cov ntaub ntawv uas muaj zog dua tuaj yeem muaj qhov cuam tshuam qis dua. Yog tias qhov cuam tshuam toughness txo qis tom qab kev vibration kev ntxhov siab - kev kho mob, nws yuav txhais tau tias qhov hardness yog nce; conversely, yog hais tias qhov cuam tshuam toughness yog nce, lub hardness yuav raug txo. Kev cuam tshuam ntawm hardness tuaj yeem suav tau los ntawm kev sib piv cov lej hloov pauv ntawm cov kev cuam tshuam toughness ua ntej thiab tom qab kev kho mob, thiab kev sib raug zoo ntawm kev sib raug zoo ntawm kev cuam tshuam thiab hardness tuaj yeem tsim tau (los ntawm kev ua kom haum ntau ntawm cov ntaub ntawv sim) rau kev ntsuam xyuas ntau dua. .

 

 

 

 

Vim li cas thiaj xaiv peb?
Peb txaus siab rau peb lub peev xwm los muab cov kev cai daws teeb meem rau peb cov neeg siv khoom cov kev xav tau tshwj xeeb.
Peb txheeb xyuas thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb LR EH32 Steel Phaj, thiab tsim cov txheej txheem tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom ntseeg peb kom xa cov khoom zoo Cold-rolled Steel khoom raws sij hawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis siv cov kev pab cuam sov so thiab kev xav tom qab muag, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau hom Cold-rolled Steel khoom kom tau raws li cov neeg siv khoom xav tau.
Peb ua raws li cov neeg siv khoom-centric thiab hom-taw qhia kev lag luam lub tswv yim, thiab txuas ntxiv muab cov neeg siv khoom txhim khu kev qha thiab cov khoom zoo thiab cov kev pabcuam.
Peb lub Hoobkas tau cog lus los txhawb nqa cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab zoo.
Txhua tus neeg ua haujlwm ntawm peb lub tuam txhab thiab txhua lub tuam haujlwm ua haujlwm ua ke los ua ke kev tswj hwm kev lag luam, kev tshaj lij thev naus laus zis, kev txheeb cais ntau thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Relying ntawm superior tej yam kev mob thiab muaj zog zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg muas zaub.

Cim npe nrov: Lr eh32 steel phaj, Tuam Tshoj lr eh32 steel phaj lwm tus neeg, hoobkas