Thaum xyoo 1980s, ultrasonic hardness testers tau qhia rau kuv lub teb chaws los ntawm txawv teb chaws. Qee lub tsev kawm ntawv qib siab hauv tsev tau pib tshawb fawb cov ntsiab lus thiab cov qauv ntawm ultrasonic hardness testers, tsim thawj tiam ntawm domestically tsim pointer - hom ultrasonic hardness testers los ntawm tsev kawm ntawv - kev lag luam kev koom tes.
Cov thawj - tiam no nyob rau hauv domestically tsim ultrasonic hardness testers feature pointer qhia thiab tsuas muaj cov txheej txheem ntawm cov teb chaws Europe thiab America nyob rau hauv lub lig 1960s. Lawv raug kev txom nyem los ntawm qhov tseeb tsawg, qhov ua tsis tiav siab, thiab kev ua haujlwm tsis zoo. Cov tiam thib ob tau nthuav tawm cov duab digital, tseem muaj cov txheej txheem thev naus laus zis ntawm Tebchaws Europe thiab Asmeskas thaum xyoo 1980s. Lawv tsis muaj peev xwm khoov nkhaus, tsuas yog muab cov kev kho kom haum, ua rau qhov raug qis thiab tsis zoo. Txog rau thaum ntxov xyoo pua 21st, siab- cov neeg siv kawg hauv Suav teb tseem cia siab rau cov khoom siv ultrasonic hardness imported los ntawm lub teb chaws Yelemees thiab Nyiv.
Tom qab ntawd, Suav manufacturers nkag mus rau theem ntawm kev ywj pheej innovation. Piv txwv li, Euro-Spectrum Instruments tau tsim lub OU2300 digital zaub ultrasonic hardness tester, uas txhawb nqa nkhaus algorithms. Zhongwang Instruments tsim thiab tsim OU2380 ultrasonic hardness tester, uas txhawb nqa nkhaus algorithms, hluav taws xob sojntsuam, thiab Bluetooth cov ntaub ntawv xa mus. Tam sim no, qee cov tuam txhab nyob sab Europe tau siv cov tshuab ua haujlwm thiab kov lub vijtsam digital ntawm lawv lub davhlau ya nyob twg, ua tiav ntau yam - nplai ua haujlwm.
