Na obosara ngwa nkengwaahịa plastik, ọha na eze nwere elu na elu chọrọ maka ọdịdị ọdịdị nke ngwaahịa plastik, ya mere, a ga-emeziwanye àgwà nke ime oghere plastik nke dị n'elu ya, karịsịa n'ịdị elu nke ọdịdị ihu enyo na elu na-egbuke egbuke dị elu. Ihe ndị a chọrọ dị elu, ya mere ihe ndị a chọrọ maka polishing dịkwa elu. Polishing bụghị nanị na-abawanye mma nke workpiece, kamakwa mma corrosion iguzogide na eyi iguzogide ihe elu, na nwekwara ike ikwado ụdi injection ịkpụzi, dị ka eme ka plastic ngwaahịa mfe demould na mbenata mmepụta injection ịkpụzi okirikiri. Ka ọ dị ugbu a, ụzọ polishing a na-ejikarị eme ihe bụ ndị a:
(1) Mechanical polishing
Mechanical polishing bụ usoro polishing nke a na-enweta elu dị larịị site na ịkpụ na nrụrụ plastik nke elu nke ihe ahụ iji wepụ akụkụ convex na-egbuke egbuke. N'ozuzu, a na-eji eriri whetstone, wiil ajị anụ, akwụkwọ aja, wdg. Iji ngwá ọrụ inyeaka dị ka turntables, ultra-mma egweri na polishing ụzọ nwere ike iji maka ndị nwere elu elu mma chọrọ. Ultra-nkenke egweri na polishing bụ ihe pụrụ iche abrasive ngwá ọrụ, nke a na-enwe n'elu nke workpiece ka machined na-egweri na polishing mmiri mmiri nwere abrasive, na-atụgharị na elu na-agba. N'iji teknụzụ a, enwere ike nweta oke ike nke Ra0.008μm, nke kachasị elu n'etiti ụzọ polishing dị iche iche. Igwe anya lens na-ejikarị usoro a
(2) Ultrasonic polishing
A na-etinye workpiece na nkwusioru abrasive ma tinye ya n'ọhịa ultrasonic ọnụ, na abrasive bụ ala ma na-egbuke egbuke n'elu nke workpiece site na oscillation nke ultrasonic ife. Ike macroscopic nke ultrasonic nhazi dị ntakịrị, ọ gaghịkwa eme ka nrụrụ nke workpiece, ma ọ siri ike ịme ma wụnye ngwá ọrụ. Enwere ike ijikọ machining ultrasonic na usoro kemịkalụ ma ọ bụ electrochemical. Na ndabere nke ngwọta corrosion na electrolysis, ultrasonic vibration na-etinye aka ịkpali ihe ngwọta, nke mere na etisasịwo ngwaahịa n'elu nke workpiece na-wepụrụ, na corrosion ma ọ bụ electrolyte nso n'elu bụ edo; mmetụta cavitation nke ebili mmiri ultrasonic na mmiri mmiri nwekwara ike igbochi usoro mmebi ahụ, nke na-eme ka ọ dịkwuo elu.
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(3) Nchacha mmiri
Nchacha mmiri na-adabere na mmiri na-agba ọsọ na-agba ọsọ yana ihe abrasive nke ọ na-ebu na-eme ka ọ dị n'elu ihe ahụ iji nweta nzube nke polishing. Ụzọ ndị a na-ejikarị eme ihe bụ: abrasive jet machining, mmiri mmiri jet machining, hydrodynamic egweri, wdg Hydrodynamic egweri na-chụpụrụ hydraulic mgbali, nke mere na mmiri mmiri ọkara na-ebu abrasive ahụ eruba reciprocatingly gafee n'elu nke workpiece na elu na-agba. A na-eme usoro ahụ site na ogige pụrụ iche (ihe ndị dị ka ihe ndị dị na polymer) na-enwe ezigbo ike n'okpuru nrụgide dị ala ma jikọta ya na abrasives, na abrasives nwere ike ịbụ silicon carbide ntụ ntụ.
(4) Magnetik egweri na polishing
Igwe ndọta na-egweri na polishing bụ iji magnetik abrasives na-etolite brushes abrasive n'okpuru omume nke a magnetik na-egweri workpieces. Usoro a nwere nhazi nhazi dị elu, ịdị mma dị mma, njikwa dị mfe nke ọnọdụ nhazi na ọnọdụ ọrụ dị mma. Site na abrasives dabara adaba, ịdị nro dị elu nwere ike iru Ra0.1μm
Nchacha na nhazi ịkpụzi plastik dị nnọọ iche na ncha elu nke achọrọ na ụlọ ọrụ ndị ọzọ. N'ikwu ya n'ụzọ ziri ezi, polishing nke ebu kwesịrị ịkpọ nhazi mirror. Ọ bụghị naanị na ọ nwere nnukwu ihe achọrọ maka ịmecha onwe ya kamakwa ụkpụrụ dị elu maka ịdị larịị elu, ịdị nro na izi ezi geometric. A na-achọkarị polishing elu naanị iji nweta elu na-egbuke egbuke
A na-ekewa ọkọlọtọ nke nhazi mirror n'ime akara anọ: AO = Ra0.008μm, A1 = Ra0.016μm, A3 = Ra0.032μm, A4 = Ra0.063μm, ọ na-esiri ike ịchịkwa kpọmkwem geometric ziri ezi nke akụkụ n'ihi polishing electrolytic. , polishing mmiri na ụzọ ndị ọzọ Otú ọ dị, elu àgwà nke kemịkalụ polishing, ultrasonic polishing, magnetik egweri na polishing ụzọ enweghị ike izute ihe ndị a chọrọ, ya mere mirror elu nhazi nke ziri ezi ebu ka na-achịkwa n'ibu polishing.
Oge nzipu: Mee-11-2022
