Kev tshawb fawb faib pwm, tsim pwm kev lag luam raws li kev npaj, kev tshawb fawb thiab tsim pwm tsim tshuab, thiab kev tshawb fawb thiab tsim pwm kev qauv qauv. Piv nrog rau kev tsim khoom, txoj haujlwm inkstone tiag tiag muaj qhov tseem ceeb ntawm kev lag luam thiab kev lag luam, thiab nws muaj qhov tseem ceeb tshaj qhov kev txiav txim siab thiab yog lub hauv paus rau kev tshawb fawb thiab kev tsim cov pwm txheej txheem txheej txheem. formwork nrog rau formwork formwork
Muaj ntau txoj hauv kev los faib cov pwm, thiab cov uas feem ntau siv yav dhau los yog:
Raws li cov qauv pwm, xws li ib qho txheej txheem pwm, ob hom xuas nrig ntaus pwm, thiab lwm yam .;
Muab faib raws li cov khoom siv, xws li tsheb vaj huam sib luag pwm, lub cev muaj zog pwm, thiab lwm yam .;
Muab faib raws li cov khoom siv, xws li pwm rau cov khoom hlau, pwm rau cov khoom tsis yog xim hlau, thiab lwm yam.;
Muab faib los ntawm cov khoom tsim pwm, xws li cemented carbide pwm, thiab lwm yam.; cais los ntawm cov txheej txheem, xws li kos duab tuag, hmoov metallurgy tuag, forging tuag, thiab lwm yam.
Qee yam ntawm cov txheej txheem no tsis tuaj yeem cuam tshuam tag nrho cov qauv ntawm ntau yam pwm thiab cov yam ntxwv ntawm kev tsim cov tshuab ua haujlwm, nrog rau lawv txoj haujlwm. Txog rau qhov kawg no, kev faib tawm dav dav raws li cov txheej txheem cov khoom thiab cov khoom siv ntawm kev siv pwm rau kev tsim thiab ua tiav, thiab pwm tau muab faib ua kaum pawg. chav kawm lossis ntau yam.
