gene yog dab tsiral mechanical zog ntawm hmoov txheej
Cov noobral mechanical zog ntawm hmoov txheej suav nrog cov hauv qab no.
- Kev xeem hlais (adhesion)
- yooj Yim
- Erichsen
- Buchholz Hardness
- Pencil Hardness
- Clemen Hardness
- Qhov cuam tshuam
Kev xeem hlais (adhesion)
Raws li cov qauv ISO 2409, ASTM D3359 lossis DIN 53151. Nyob rau ntawm lub vaj huam sib luag coated kuaj ib tus ntoo khaub lig (indentations nyob rau hauv daim ntawv ntawm tus ntoo khaub lig thiab parallel rau ib leeg nrog kev sib nrig sib nrug ntawm 1 hli lossis 2 hli) yog ua los ntawm cov hlau. Ib daim kab xev txheem yog muab tso rau ntawm tus ntoo khaub lig-txiav. Tus ntoo khaub lig-txiav yog muaj nuj nqis los ntawm qhov ntau ntawm cov yeeb yaj kiab detached tom qab tshem cov kab xev.
yooj Yim
Lub vaj huam sib luag txheej txheem txheej txheem yog folded hla cylindrical yob (raws li cov qauv ASTM D1737, ISO 1519 lossis DIN 53152) lossis conical mandrel (raws li cov qauv ASTM D552 lossis ISO 6860). Qhov no yog ib qho kev ntsuas rau kev yooj yim, ncab thiab adhesion ntawm cov txheej hauv qab deformation. Cov kev ntsuam xyuas no yog siv los ntsuas qhov kev ua haujlwm tom qab deforming peev txheej ntawm cov khoom coated.
Yog hais tias kev ntsuam xyuas panels yog folded nyob ib ncig ntawm lub cylindrical yob (nrog ib tug paub txoj kab uas hla) ces qhov tshwm sim yog txoj kab uas hla ntawm yob thaum tsis muaj kev puas tsuaj ntawm txheej.
Yog hais tias qhov kev xeem vaj huam sib luag yog folded nyob ib ncig ntawm lub conical mandrel ces qhov kev ntsuam xyuas tau sawv cev rau qhov twg cov txheej yog tawg, pib ntawm lub sharpest sab ntawm lub quav nyob rau hauv lub nto.
Erichsen
Raws li cov qauv DIN 53156 lossis ISO1520. Hauv qhov kev sim no, lub pob bearing nrog ib txoj kab uas hla tshwj xeeb yog thawb rau sab nraub qaum ntawm txheej (slow deformation). Qhov no nrog ib tug ceev txiav txim ua ntej. Lub txheej stretches thiab tawg thaum kawg. Qhov tob ntawm pob bearing nyob rau hauv lub vaj huam sib luag xeem thaum lub txheej yog tawg, txiav txim siab.
Buchholz Hardness
Raws li cov qauv ISO 2815 lossis DIN 53153. Qhov kev ntsuas no ntsuas qhov deforming, qhov indentation ntawm cov yeeb yaj kiab coated, thaum lub log tshwj xeeb nrog lub kaum ntse ntse muab tso rau ntawm qhov chaw thaum 30 vib nas this. Buchholz hardness yog sib npaug rau 100 muab faib los ntawm qhov ntev ntawm indentation (mm).
Pencil Hardness
Raws li tus qauv ASTM D3363. Nyob rau hauv ib tug tshwj xeeb ntsuas mem hluav ntawm txawv hardness (2H, H, F, HB, B, 2B) yog muab tso rau tom qab sharped thiab flattened. Ib kab yog kos nrog xaum. Tom qab txhua tus cwj mem kos lub txheej raug tshuaj xyuas ntawm kev puas tsuaj.Cov cwj mem hardness sawv cev rau cov cwj mem hardness ua tiav: ib qho thaum lub txheej tseem tsis tau puas thiab lwm qhov uas nws puas.
Clemen Hardness
Raws li tus qauv BS 3900: E2, ISO 1518, ASTM D5178. Nws yog siv los ua ib qho kev qhia txog kev tiv thaiv inkervingen. Nrog ib rab koob steel ib kab yog kos (kev txiav txim siab ceev thiab siab) ntawm qhov coated nto. Txhua lub sij hawm thaum ib kab yog kos nrog rab koob, hnyav hnyav yog muab tso rau ntawm rab koob. Thaum lub sijhawm txheej txheej puas lawm (koob ntawm cov hlau) kom muaj nuj nqis ntawm lub koob yog qhov cim rau Clemen hardness.
Qhov cuam tshuam
Kev cuam tshuam ncaj qha lossis kev cuam tshuam ncaj qha: ASTM D-2794 ntawm ISO 6272.Impact (ceev deformation) raug kuaj nrog tus impacttester. Lub hauv paus ntsiab lus muaj nyob rau ntawm ib pawg uas ntog los ntawm qhov sib txawv qhov siab ntawm lub coated nto ( ncaj qha : nyob rau hauv lub txheej, indirect nyob rau sab nraud ntawm lub coated xeem vaj huam sib luag). Qhov cuam tshuam, thaum lub indentation nyob rau hauv lub txheej sawv cev tsis muaj kev cuam tshuam ntawm cracking, yog hais nyob rau hauv kg.cm, nyob rau hauv Nm los yog nyob rau hauv nti / phaus.
Koj yuav pom ntau cov lus hais txog cov khoom ntawm hmoov txheej.