Cov khoom siv hlau
Portable hardness testers feem ntau siv cov ntaub ntawv hlau xws li aluminium alloy thiab stainless hlau. Aluminium alloy yog lub teeb yuag thiab yooj yim nqa; stainless hlau yog qhov muaj zog dua thiab tuaj yeem tiv taus ntau dua thiab kev co. Txawm li cas los xij, vim qhov zoo thermal thiab hluav taws xob conductivity ntawm cov hlau, yuav tsum tau saib xyuas los tiv thaiv lub ntsuas thiab tus neeg teb xov tooj thaum ntsuas.
Cov ntaub ntawv yas
Portable hardness testers feem ntau siv cov ntaub ntawv yas xws li ABS yas thiab PC yas. Cov ntaub ntawv no muaj qhov zoo corrosion kuj, hnav tsis kam, thiab toughness, tso cai rau siv nyob rau hauv ib puag ncig hnyav. Txawm li cas los xij, cov ntaub ntawv yas yog cov khoom tawg yooj yim dua li cov ntaub ntawv hlau, yuav tsum tau ceev faj tiv thaiv cov cuab yeej.
Cov khoom siv hybrid
Portable hardness testers feem ntau siv cov khoom siv sib xyaw, xws li aluminium alloy + yas ua ke. Qhov no ua ke qhov zoo ntawm ob qho khoom siv, uas ua rau lub teeb pom kev zoo thaum tuav cov kev tiv thaiv corrosion thiab hnav tsis kam, yog li nthuav nws cov ntawv thov ntau yam.