Mehato ea ho itšireletsa khahlanong le ho pshatla ha li-self-drilling screws
Ho robeha ha cap e robehileng, mohatla o robehileng, molamu o robehileng, hangata ho hlaha ka har'a martensitic carbon steel self drilling screw, martensitic carbon steel self drilling screw ka mocheso o phahameng oa carbonitriding surface hardness e fihlile ≥560HV, ka ho kenella ka matla, empa hape e eketsa brittleness ea screw. Ha "self drilling screw" tabeng ea mojaro o feteletseng, torque e feteletseng, ho sisinyeha habonolo ho tla etsahala brittle fracture phenomenon.Ha ho phunya ho itšehla thajana ho ke ke ha ama tsoelo-pele ea kaho feela, eseng e ntle, empa hape e tlisa letoto la likotsi tsa polokeho. Haholo-holo ho na le lintlha tse latelang ho thibela ho robeha ha screw ea ho cheka:
1: Khetha sehlahisoa se nepahetseng
a: Pele o sebelisoa, netefatsa hore na lisebelisoa tsa mochini tsa sehlahisoa li ka fihlela litlhoko tsa tšebeliso
b: Khetho e utloahalang ea boholo ba screw le bolelele
C: Ho kgothaletswa ho sebelisa leino la halofo kapa sehlahisoa sa meno a mabeli sebakeng sa interlayer
2: Sebelisa nomoro
A: Sebelisa lisekere tse 4-6 ka mithara e 'ngoe
B: Palo ea marulelo le poleiti e boima e lokela ho eketsoa ka nepo
C: Sebaka sa moea se seholoanyane se loketseng ho eketsa litekanyetso
3: Mokhoa o nepahetseng oa tšebeliso
A: Tlanya perpendicular ho axis ea khoele, u se ke ua sekamela
B: Ts'ebetsong ea ho tiisa, matla a tlameha ho tšoana, 'me torque e tiisang ha ea lokela ho feta torque ea polokeho.
C: 12 #, 14 # lihlahisoa tse boletsoeng, lebelo la ho cheka motlakase 1000-1800 phetohelo e ke ke ea potlaka haholo
4: Torque e hlolehileng (ka tlase ho data bakeng sa litšupiso feela) yuniti:Nm
| litlhaloso | Senya torque min |
| 4# | 1.5 |
| 6# | 2.8 |
| 8# | 4.7 |
| 10# | 6.9 |
| 12# | 10.4 |
| 14# | 16.9 |