1. High corrosion kuj Muaj ntau cov resins thiab additives muaj ib tug corrosive nyhuv ntawm cov pwm kab noj hniav. Qhov kev xeb no ua rau cov hlau tawg thiab tev tawm ntawm qhov chaw ntawm cov pwm kab noj hniav, uas ua rau cov txheej txheem deg tsis zoo, thiab qhov tsis zoo ntawm cov khoom yas. Yog li ntawd, siv corrosion resistant steel los yog chrome plating los yog npib tsib xee plating rau saum npoo ntawm pwm kab noj hniav.
2. Zoo hnav tsis kam Lub glossiness thiab qhov tseeb ntawm qhov chaw ntawm cov khoom yas yog ncaj qha cuam tshuam rau kev hnav tsis kam ntawm qhov chaw ntawm cov pwm kab noj hniav. Tshwj xeeb tshaj yog thaum cov iav fibers, inorganic fillers, thiab tej pigments ntxiv rau ib co plastics, lawv ntws ua ke nrog cov yas yaj ntawm ib tug ceev ceev nyob rau hauv txoj kev khiav thiab kab noj hniav, ua rau muaj kev sib txhuam loj ntawm cov kab noj hniav. Yog tias cov khoom tsis hnav-resistant, nws yuav hnav sai sai, ua rau kev puas tsuaj rau qhov zoo ntawm cov khoom yas.
3. Kev ruaj ntseg zoo thaum lub sij hawm yas molding, qhov kub ntawm cov yas pwm kab noj hniav yuav tsum ncav cuag 300 degree. Vim li no, nws yog qhov zoo tshaj plaws los xaiv cov cuab yeej steel (kua sov kho steel) uas tau raug kho kom haum rau tempering. Txwv tsis pub, nws yuav ua rau muaj kev hloov pauv hauv microstructure ntawm cov khoom, uas ua rau muaj kev hloov pauv ntawm qhov loj ntawm cov pwm yas.
4. Ib qho yooj yim rau txheej txheem pwm feem ntau yog ua los ntawm cov ntaub ntawv hlau, thiab qee cov qauv tsim kuj tseem nyuaj. Txhawm rau kom luv luv lub voj voog ntau lawm thiab txhim kho kev ua tau zoo, cov ntaub ntawv pwm yuav tsum tau ua kom yooj yim rau cov duab thiab qhov tseeb ntawm cov duab kos.
5. Kev ua haujlwm zoo polishing Cov khoom yas feem ntau xav tau zoo gloss thiab deg mob, yog li qhov roughness ntawm kab noj hniav yuav tsum me me heev. Nyob rau hauv txoj kev no, cov kab noj hniav yuav tsum tau ua rau saum npoo, xws li polishing, sib tsoo, thiab lwm yam. Yog li ntawd, cov hlau xaiv yuav tsum tsis txhob muaj cov impurities ntxhib thiab qhov hws.
6. Tsawg qhov cuam tshuam ntawm kev kho cua sov Txhawm rau txhim kho hardness thiab hnav tsis kam, cov pwm yas feem ntau raug rau kev kho cua sov, tab sis qhov kev kho no yuav tsum txo qis qhov hloov pauv. Yog li ntawd, pre-hardened steel muaj peev xwm ntawm machining yog siv.