Dab tsi yog qhov yuam kev thaum siv cov khoom siv portable hardness tester los kuaj H13 cov khoom?

Untreated surfaces, overly dense measuring points, uncalibrated instruments, unfixed workpieces, and environmental interference are the most common mistakes made while testing H13 material with a portable hardness tester. Kev ntsuam xyuas ntawm kev kho cua sov zoo yuav raug cuam tshuam los ntawm cov xwm txheej no, uas yuav ua rau muaj qhov qis dua lossis muaj kev sib tw ntau dhau.

 

1. Thawj qhov yuam kev thiab lawv cov teebmeem

Hom yuam kev

Kev nthuav qhia tshwj xeeb

Qhov tshwm sim

Unpolished nto

ntsuas yam tsis muaj kev tshem tawm corrosion, roj, lossis oxide nplai.

Hardness nyeem ntawv uas yog 2-5 HRC qis dua tuaj yeem txhais yuam kev tias tsis tsim nyog.

Ntau dhau ntawm ntsuas cov ntsiab lus

Tsawg dua 3 hli cais cov neeg nyob sib ze indentations, qhia tias muaj kev ntxhov siab tsis tu ncua.

Kev ntsuas tom qab ntawd tsis ruaj khov lossis siab dua.

Cov cuab yeej tsis calibrated.

Cov cuab yeej drifts thaum nws tsis yog calibrated ntawm tus qauv thaiv.

general nyeem distortion thiab systematic divergence.

Unclamped Workpiece

Cov khoom me me, tsis ruaj khov nrog cov phab ntsa nyias yuav co thaum ntsuas.

cov ntaub ntawv tseem ceeb volatility, tsis zoo reproducibility, thiab txawv txav rebound.

Kev ntsuas qhov kub siab - Ib puag ncig kub

Freshly ci workpieces raug kuaj ncaj qha hauv qhov kub siab tshaj 50 degree.

Nyob rau hauv ib lub xeev rhuab, cov khoom softens thiab ntsuas yog feem ntau qis dua.

Cov ntaub ntawv tiag tiag: Vim tias cov oxide txheej ntawm qhov chaw ntawm H13 nozzle tsis polished, cov chaw tsim khoom ntsuas qhov hardness ntawm 44 HRC nkaus xwb. Txhawm rau tiv thaiv qhov tsis lees paub qhov tseeb, qhov tawv tawv tiag tiag tom qab polishing yog 50.2 HRC.

 

2. Kev tiv thaiv thiab zam kev yuam kev

Ua ntej- xeem Sib Tsoo: Txhawm rau lav qhov kev sojntsuam kom raug, txhuam cov lus qhia ntsuas nrog cov ntawv xuab zeb kom txog thaum lawv muaj xim hlau.

Standardized Measuring Point Layout: Xaiv peb mus rau tsib qhov chaw piv txwv (xws li qhov chaw nruab nrab, ntug, thiab tuab ciam teb) rau txhua daim, sib nrug tsawg kawg peb millimeters sib nrug.

Calibration Ua ntej siv txhua qhov: Xyuas kom tseeb tias qhov tsis raug yog tsawg dua lossis sib npaug rau ± 1 HRC los ntawm kev kuaj xyuas ntawm tus qauv hardness thaiv.

Stable Workpiece Positioning: Txhawm rau kom tsis txhob me lossis nyias -cov phab ntsa ntawm qhov txav, clamp lawv rau hauv qhov chaw.

Tsis txhob kub siab thiab kev vibration ib puag ncig: Ua ntej kev sim, cia lub workpiece txias rau chav tsev kub (tsawg dua 50 degree), thiab kom nws deb ntawm stamping thiab forging machinery.