Cov kev txwv ntawm Hardness Scale

 

Kev siv tsawg tsawg ntawm cov nplai sib txawv: Txawm hais tias Rockwell hardness tester muaj ntau qhov ntsuas (xws li HRA, HRB, HRC, thiab lwm yam), txhua qhov ntsuas muaj nws cov ntawv thov tshwj xeeb. Piv txwv li, HRC nplai yog tsim rau cov ntaub ntawv hardness siab, thiab HRB nplai yog tsim rau cov ntaub ntawv softer. Yog tias qhov ntsuas tsis tsim nyog raug xaiv los ntsuas cov khoom hardness, nws yuav ua rau qhov ntsuas tsis raug lossis qhov muaj nuj nqis sab nraud ntawm qhov ntsuas. Piv txwv li, thaum siv HRC nplai los ntsuas cov khoom siv softer, tus nqi hardness yuav qis dua 20HRC. Hauv qhov no, cov ntaub ntawv tau txais tsis raug vim tias HRC nplai tsis rhiab txaus hauv qhov nyuaj no.

 

Tsis muaj kev txuas ntxiv ntawm cov nplai: Tsis muaj kev hloov pauv yooj yim ntawm cov nplai sib txawv, uas ua rau nws nyuaj rau kev sib piv cov hardness ntawm cov ntaub ntawv sib txawv hardness ranges. Piv txwv li, yog tias qhov nyuaj ntawm ib qho khoom yog 80 ntawm HRA nplai thiab qhov hardness ntawm lwm cov khoom yog 90 ntawm HRB nplai, nws yog ib qho nyuaj rau txiav txim siab ncaj qha ntawm ob cov ntaub ntawv uas nyuaj dua. Nws yog ib qho tsim nyog los ua kom tiav cov kev hloov pauv nyuaj thiab kev sib piv raws li qhov hardness ranges sib xws rau lawv cov nplai thiab cov rooj hloov pauv (yog tias muaj).

 

Test Precision cuam tshuam los ntawm ntau yam

 

Cov nyhuv ntawm Specimen Surface Roughness: Rockwell hardness test yog rhiab heev rau qhov roughness ntawm cov qauv. Yog hais tias tus qauv saum npoo tsis du txaus, kev sib cuag ntawm qhov indenter thiab qhov chaw seem yuav tsis sib npaug, yog li cuam tshuam qhov ntsuas qhov ntsuas qhov tob ntawm qhov tob. Piv txwv li, rau lub phaj steel nrog pom tseeb machining cov cim los yog siab roughness ntawm qhov chaw, lub indenter yuav tsis muaj peev xwm nias nyob rau hauv vertically thaum lub sij hawm qhov kev xeem, uas ua rau ib tug sib txawv nyob rau hauv lub ntsuas tus nqi ntawm lub indentation qhov tob thiab thaum kawg ib tug tsis raug hardness tus nqi. .

 

Cov nyhuv ntawm Non- uniform microstructure ntawm cov ntaub ntawv: Thaum lub microstructure sab hauv ntawm cov khoom siv tsis sib xws, xws li qhov muaj nyob ntawm kev sib cais, suav nrog, lossis cov txheej txheem sib txawv, nws yuav ua rau qhov sib txawv hauv zos hardness. Txij li thaum Rockwell hardness test yog ib qho kev xeem indentation hauv zos, cov txiaj ntsig kev xeem yuav tsuas cuam tshuam qhov hardness ntawm qhov indentation txoj hauj lwm thiab tsis tuaj yeem sawv cev qhov tseeb tag nrho hardness ntawm cov khoom. Piv txwv li, nyob rau hauv cov khoom siv hlau uas muaj cov tawv tawv-theem hais, yuav muaj qhov sib txawv loj ntawm qhov hardness qhov tseem ceeb tau txais thaum lub indenter yog nias raws nraim ntawm cov tawv-theem hais thiab thaum nws nias rau ntawm qhov muag-matrix.

 

 

 

 

 

 

 

 

Element	CCS D460 Max %	Element	CCS D460 Max %
C	0.20	Ni	2.0
Mn	1.70	Mo	1.0
Si	0.10-0.55	Al	0.015 min
S	0.030	Nb	0.06
P	0.030	V	0.10
Cu	1.5	Ti	0.20
Cr	2.0	N	0.020

 

 

Cov teeb meem muaj peev xwm ntawm Indentation - qhov tob ntsuas txoj cai

 

Nruam ntawm qhov tob - ntsuas yuam kev: Rockwell hardness yog xam raws li qhov tob indentation. Thaum lub sij hawm xeem, tej yam me me yuam kev nyob rau hauv qhov tob ntsuas yuav ua rau ib tug kuj loj sib txawv nyob rau hauv tus nqi hardness. Piv txwv li, yam xws li indenter hnav, loosening ntawm cov neeg kho tshuab qauv ntawm lub hardness tester, los yog cov kev txwv ntawm kev ntsuas qhov system precision yuav ua rau yuam kev nyob rau hauv indentation - qhov tob ntsuas. Ntxiv mus, cov kev ua yuam kev no yuav sib sau nrog txhua qhov kev ntsuas, thiab qhov ntsuas qhov tseeb ntawm lub hardness tester yuav txo qis tom qab siv sijhawm ntev.

 

Tsis muaj peev xwm ntsuas qhov nyuaj ntawm cov khoom nyias: Rau cov ntaub ntawv thinner, txij li Rockwell hardness test yuav tsum muaj ib qho indentation qhov tob, lub indenter tuaj yeem nkag mus rau hauv cov khoom, lossis cov khoom siv hauv qab yuav muaj kev cuam tshuam zoo rau qhov indentation, uas ua rau tsis muaj peev xwm ntsuas qhov nyuaj ntawm cov ntaub ntawv nyias. Feem ntau, nws yuav tsum tau hais tias cov qauv thickness tsis tsawg tshaj li 10 npaug ntawm qhov tob indentation. Thaum cov khoom tuab tsawg dua qhov yuav tsum tau ua, qhov ntsuas ntsuas tsis tuaj yeem ntseeg tau.

 

 

 

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 CCS D460 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 sijhawm thiab ntawm kev siv nyiaj.
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: ccs d460 steel phaj, Tuam Tshoj ccs d460 steel phaj lwm tus neeg, hoobkas