Nzira yekutarisa kana iyo yakaoma tester iri kushanda zvakajairika?
1.Muongorori wekuoma anofanira kunyatsosimbiswa kamwe chete pamwedzi.
2. Nzvimbo yekuisa yehukukutu tester inofanira kuchengetwa munzvimbo yakaoma, isina kudengenyeka uye isina-corrosive, kuitira kuti ive nechokwadi chekururama kwechiridzwa panguva yekuyera uye kugadzikana uye kuvimbika kwekukosha panguva yekuedza.
3. Kana iyo yakaoma tester ichishanda, haibvumirwi kubata zvakananga pamusoro pesimbi kuti ionekwe kudzivirira kuenzana kwechiyero chisina kururama kana kukuvadza diamond cone indenter pamusoro weiyo yakaoma tester.
4. Panguva yekushandiswa kwedhaimondi indenter, inofanirwa kuongorora kupera kwepamusoro kweiyo indenter kamwe chete pagore.Mushure mechiyero chega chega, indenter inofanira kudzoserwa mubhokisi rakakosha rekuchengetedza.
Hardness tester precautions:
Pamusoro pezviyero zvekuchengetedza kana uchishandisa akasiyana siyana ekuomarara testers, kune mamwe matambudziko akajairika anofanirwa kutariswa, ayo akanyorwa pazasi:
1. The hardness tester pachayo inoburitsa marudzi maviri ekukanganisa: imwe ndeye kukanganisa kunokonzerwa ne deformation uye kufamba kwezvikamu zvayo;imwe ikanganiso yakakonzerwa nekuomarara parameter inodarika mwero wakatarwa.Pachikanganiso chechipiri, muyedzo wekuomarara unofanirwa kuverengerwa neyakajairwa block isati yayera.Kune iyo calibration mhedzisiro yeRockwell kuomarara tester, mutsauko unokodzera mukati ± 1.Kururamisa kukosha kunogona kupihwa kune yakagadzikana kukosha ine musiyano mukati ± 2.Kana mutsauko uri kunze kweiyo ± 2, zvinodikanwa kugadzirisa uye kugadzirisa muyedzo wekuomarara kana kushandura kune dzimwe nzira dzekuomarara.
Imwe neimwe chiyero che Rockwell kuomarara ine de facto chiyero chekushandisa, iyo inofanirwa kusarudzwa nemazvo zvinoenderana nemirairo.Somuenzaniso, kana kuoma kwakakwirira kudarika HRB100, chiyero cheHRC chinofanira kushandiswa pakuongorora;kana kuoma kwacho kwakadzikira pane HRC20, chiyero cheHRB chinofanira kushandiswa kuongororwa.Nemhaka yokuti kunyatso uye kunzwisiswa kwehukukutu tester kwakashata kana chiyero chekuedza chinopfuura, uye kukosha kwekuoma kusina kururama, hazvina kukodzera kushandiswa.Dzimwe nzira dzekuomesera dzakaomarara zvakare dzine zvinoenderana nechiyero chekuenzanisa.Iyo yakajairwa block inoshandiswa kuyera iyo yakaoma tester haigone kushandiswa pamativi ese, nekuti kuomarara kweyakajairwa mativi uye kuseri kwedivi hakuna hazvo kufanana.Zvinowanzo kutaurwa kuti iyo yakajairwa block inoshanda mukati megore rimwe kubva pazuva recalibration.
2. Paunenge uchitsiva indenter kana anvil, teerera kuti uchenese zvikamu zvekusangana.Mushure mekushandura, zviedze kakawanda nesimbi yemuenzaniso wehumwe kuoma kusvikira kukosha kwekuoma kunowanikwa kaviri mumutsara kwakafanana.Chinangwa ndechekuita kuti indenter kana anvil uye chikamu chekusangana chemuchina wekuyedza chisimbiswe zvakasimba uye chiri mukubata kwakanaka, kuitira kuti zvisakanganisa kurongeka kwemhedzisiro yebvunzo.
3. Mushure mokunge muyedzo wekuoma uchigadziriswa, paunotanga kuyera kuoma, chiyero chekutanga chekuedza hachina kushandiswa.Nekutya kusabatana kwakashata pakati pemuenzaniso neanvil, kukosha kwakayerwa hakuna kururama.Mushure mekunge poindi yekutanga yaedzwa uye muyedzo wekuomarara uri mune yakajairwa maitiro ekushandisa, sampu inoedzwa zviri pamutemo uye kuyerwa kwekuomarara kukosha kunorekodhwa.
4. Kana chidimbu chekuedza chichibvumira, kazhinji sarudza zvikamu zvakasiyana-siyana kuti uedze hutsika hutatu hwekuoma, tora chiyero chepakati, uye tora chiyero chekukosha sehuwandu hwekuoma kwechidimbu chekuedza.
5. Pazvimedu zvekuedza zvine maumbirwo akaoma, mapadhi emhando dzinoenderana anofanirwa kushandiswa, uye anogona kuongororwa mushure mekugadzirisa.Iyo yakatenderedza bvunzo chidimbu inowanzoiswa muV-yakaita groove yekuyedza.
6. Usati watakura, tarisa kana mubato wekutakura wakaiswa panzvimbo yekudzikisa.Paunenge uchitakura, chiito chinofanira kuva chakareruka uye chakadzikama, uye usashandise simba rakawandisa.Mushure mekutakura, mubato wekutakura unofanirwa kuiswa munzvimbo yekudzikisa, kuitira kuti chidziviriro chirege kuva pasi pemutoro kwenguva yakareba, zvichiita kuti plastiki deformation uye inokanganisa kuyerwa kwechiyero.
Vickers, Rockwell kuoma
Kuoma: Iko kugona kwechinhu kuramba deformation yepurasitiki yemuno, uye inonyanya kuyerwa nenzira yekudzika.
Cherechedza: Hwaro hwekuoma haugoni kuenzaniswa zvakananga kune umwe neumwe, uye hunogona kushandurwa chete kuburikidza nekuoma kwekuenzanisa tafura.
Muna 2019, Shandong Shancai Testing Instrument Co., Ltd. yakabatana neNational Testing Machine Standardization Technical Committee uye yakapinda mukugadzira mazinga maviri enyika.
1. GB/T 230.2-2022: "Metallic Materials Rockwell Hardness Test Chikamu chechipiri: Kuongorora uye Calibration yeKuoma Matesta uye Ininters"
2. GB/T 231.2-2022: "Metallic Materials Brinell Hardness Test Chikamu chechipiri: Kuongorora uye Calibration yeKuoma Matesta"
Muna 2021, Shandong Shancai akatora chikamu mukuvaka kweiyo otomatiki yepamhepo kuomarara purojekiti yeaerospace injini mapaipi, zvichibatsira kuindasitiri yezvemhepo yenyika.
Nguva yekutumira: Zvita-29-2022
