Kuomarara kuri panzvimbo yakatenderedza weld kunogona kubatsira kuongorora kusimba kweweld, nokudaro zvichikubatsira kuona kana weld ine simba rinodiwa, saka weld Vickers hardness testing method inzira inobatsira kuongorora mhando yeweld.
Shandong Shancai /Laizhou Laihua Testing Instrument Company's Vickers hardness tester inogona kuita hardness testing pazvikamu zvakasungirirwa kana nzvimbo dzekusonera. Pakuyedza hardness yewelding point, kuyerwa kwemapoinzi akawanda kuchaitwa pachinhambwe chakati kubva kumucheto wemuenzaniso kana pamusoro pewelding point. Mushure mekuwana multi-point indentation, hardness value inogona kuyerwa nekuyera nguva dzose uye curve graph inogona kuwanikwa.
Paunenge uchishandisa Vickers hardness tester kuyedza zvikamu zvakasungirirwa, zvinotevera zvinofanirwa kucherechedzwa:
1. Kusatsetseka kwemuenzaniso: Tisati taedza, tinokuya weld inofanira kuyedzwa kuti pamusoro payo pave pakanaka, pasina oxide layer, maburi nezvimwe zvinokanganisa.
2. Pakati pemutsetse we weld, tora poindi pamusoro wakakombama 100 mm yega yega kuti uedze.
3. Kusarudza simba rekuyedza rakasiyana kuchaita kuti pave nemigumisiro yakasiyana, saka tinofanira kusarudza simba rekuyedza rakakodzera tisati taedza.
Muchina wekuyedza kuomarara kwemuchina une zvinodiwa pakupedzwa kwepamusoro pemuenzaniso wakaedzwa, izvo zvinoda kugadzirirwa nokungwarira zvichienderana nemuenzaniso wesimbi.
Pfungwa yekuyedza kuomarara kwemuchina munzira yekuyedza kuomarara kwemuchina yakafanana chaizvo neyaVickers, asi mutoro unoshandiswa mudiki pane wekuomarara kwemuchina weVickers, kazhinji uri pasi pe1000g, uye mhedzisiro yacho inongova ma microns mashoma kusvika kuma microns maviri mashoma, saka bvunzo yekuomarara kwemuchina inopa nzira iri nyore yekudzidza hunhu hwe microstructure ye layer inopindika. Inoshandiswa zvakanyanya kuona kuomarara kwechikamu chimwe nechimwe pamusoro uye mu layer inopindika.
Chiratidzo che "microhardness" chinowanzo ratidzwa neHV, uye musimboti wekuona uye nzira yacho zvakafanana nenzira ye "Vickers hardness". Sisitimu yekurodha, sisitimu yekuyera uye kunyatsojeka kwe "microhardness tester" zvinoda simba kupfuura ye "low-load Vickers hardness tester". Parizvino, "microhardness tester" inoshandiswa zvakanyanya mu "workpieces" dzakatetepa, uye nekuti "magnification" inogona kusvika ka400, inowanzo shandiswa se "metallographic microscope" iri nyore.
Mukushandiswa, kutarisisa mutoro, micrometer uye indenter ye microhardness tester kunofanirwa kutariswa usati washandisa, uye hardness block inoshandiswa kuona kukosha kwayo zvizere.
Muchina wekuyedza kuomarara kwemuchina unoshandisa mutoro mukuyedza zvakanaka uye zvakaenzana sezvinobvira, pasina kukanganiswa kana kudedera. Kuti uve nechokwadi chekuti mhinduro dzebvunzo dzakarurama, zvinowanzo dikanwa kuyera kakawanda muzvikamu zvakasiyana, uye kuwana avhareji yehuwandu hunomiririra kukosha kwekuomarara kwechikamu chekuyedza kubvumidzwa kana chikamu chealloy. Kune chikamu chekupinda chinoshandiswa pakupisa kwakanyanya, kuomarara kwacho kunogona kuyerwa nekushandisa muchina wekuyedza kuomarara kwemuchina pamhepo.
Nguva yekutumira: Kubvumbi-10-2024
