1. Siv lub caliperntsuas lub caij nplooj ntoos hlav hlau txoj kab uas hla, nyiam dua mus rau 3 decimal qhov chaw.
2. Ntsuas qhov sab nraud ntawm lub kauj.Qhov no yuav txawv ntawm kauj mus rau kauj, siv qhov nruab nrab ntawm cov kauj hauv nruab nrab ntawm lub cev.
3. Ntsuas qhov ntev ntawm ob txhais ceg ntawm lub caij nplooj ntoos hlav.Rau cov ceg txheem txheem, qhov no yog los ntawm qhov nruab nrab ntawm lub caij nplooj ntoos hlav mus rau qhov kawg ntawm ceg. Rov ua kauj ruam no yog tias sab nraud ntawm ob txhais ceg sib txawv.
4. Ntsuas lub cev ntevlos ntawm kev ntsuas tag nrho qhov kawg - mus rau - qhov kawg ntev ntawm lub coil los ua ke.
5. suav tag nrho cov coils nyob rau lub caij nplooj ntoos hlav, pib ntawm qhov taw tes uas txhais ceg tawm hauv lub cev thiab nkag mus rau lub helix. Suav tag nrho cov coils ua tiav mus rau lwm ceg, suav nrog ib feem ntawm lub kauj.
6. Ntsuas qhov chaw dawb ntawm ob txhais ceg.Cov kev qhia tshwj xeeb muaj xws li: 90 degree, 180 degree, 270 degree, lossis 360 degree. Cov khoom siv tshwj xeeb yuav xav tau cov nqi nruab nrab.
7. Nco ntsoov cov kev taw qhia cov coils raug mob. Hauv cov ntawv thov feem ntau, qhov no tsis yog qhov tseem ceeb, tab sis tshawb xyuas qhov chaw nyob ib puag ncig thiab yog tias lawv xav tau lub caij nplooj ntoos hlav yuav tsum tau coj mus rau hauv ib qho kev taw qhia tshwj xeeb.
8. Txheeb xyuas cov khoom siv caij nplooj ntoos hlav hlau.Yog hais tias cov hlau tsis nyiam cov hlau nplaum, ces nws yuav yog ib qho tshwj xeeb hlau alloy uas yuav tsum tau qhia meej. Yog tias cov khoom siv tsis paub, nco ntsoov qee qhov kev ua haujlwm huab cua xws li: kub siab lossis qis qis, muaj cov khoom siv corrosive, lossis kev caij tsheb kauj vab nrawm.
