Yini isakhi sofuzoral izakhiwo zemishini ye-powder coatings
Isakhi sofuzoral izakhiwo mechanical of i-powder coatings faka okulandelayo.
- Ukuhlolwa kwe-Cross-cut (ukunamathela)
- Ukuvumelana nezimo
- Erichsen
- Ubulukhuni beBuchholz
- Ukuqina Kwepensela
- Ukuqina kukaClemen
- Impact
Ukuhlolwa kwe-Cross-cut (ukunamathela)
Ngokuvumelana nezindinganiso ISO 2409, ASTM D3359 noma DIN 53151. Ephanelini yokuhlola eboshiwe i-cross-cut (ama-indents ngendlela yesiphambano ne-parallel komunye nomunye ngebanga mutual of 1 mm noma 2 mm) yenziwa ngensimbi. Itheyiphu ejwayelekile ifakwa esiphambanweni. I-cross-cut ibhekwa ngobuningi befilimu ehlukanisiwe ngemva kokukhipha i-tape.
Ukuvumelana nezimo
Iphaneli yokuhlola evamile emboziwe igoqwe phezu kwamaroli angama-cylindrical (ngokwezindinganiso ASTM D1737, ISO 1519 noma DIN 53152) noma i-mandrel eyikholi (ngokuvumelana nezindinganiso ze-ASTM D552 noma ISO 6860). Lesi yisilinganiso sokuguquguquka, ukunwebeka nokunamathela kokugqoka ngaphansi kwe-deformation. Lezi zivivinyo zisetshenziselwa ukuhlola umthamo wokuguqulwa kweposi wezingxenye ezimboziwe.
Uma amaphaneli okuhlola agoqwe azungeze ama-cylindrical rolls (ngobubanzi obaziwayo) umphumela uba ububanzi bomqulu lapho kungekho monakalo ku-coating.
Uma iphaneli yokuhlola igoqiwe nxazonke ze-mandrel eyi-conical khona-ke imiphumela yokuhlola imelela ukuthi isambatho siqhekekile kangakanani, siqala ohlangothini olucijile kakhulu lwe-fold in the surface.
Erichsen
Ngokwamazinga e-DIN 53156 noma i-ISO1520. Kulokhu kuhlolwa ibhola elinobubanzi obuthile liphushwa ohlangothini olungemuva lwe-coating (ukuguqulwa okuhamba kancane). Lokhu ngesivinini esinqunywe kusengaphambili. I-coating iyanwebeka futhi iqhekeke ekugcineni. Ukujula kwebhola elithwala ephaneli yokuhlola lapho ukugqoka kuqhekeka, kunqunywa.
Ubulukhuni beBuchholz
Ngokwezindinganiso ISO 2815 noma i-DIN 53153. Lokhu kuhlola kulinganisa ukukhubazeka, ukuhlehlisa ifilimu eboshiwe, lapho isondo elikhethekile eline-engeli ecijile libekwe ebusweni phakathi nemizuzwana engu-30. Ubulukhuni be-Buchholz bulingana no-100 buhlukaniswa ngobude bokuhlehlisa (mm).
Ukuqina Kwepensela
Ngokusho kwe-ASTM D3363 evamile. Kuthuluzi elikhethekile amapensela obulukhuni obuhlukene (2H, H, F, HB, B, 2B) abekwa ngemva kokucijiswa nokucaciswa. Umugqa udwetshwa ngepensela. Ngemva kokudwetshwa kwepensela yonke into ibhekwa ukuthi imoshekile yini.Ukuqina kwepensela kumelela ubulukhuni bepensela obulandelanayo : okukodwa ngesikhathi okokunamathela kwakungonakele kanti okunye lapho konakale khona.
Ukuqina kukaClemen
Ngokuvumelana nenkambiso ye-BS 3900:E2, ISO 1518, ASTM D5178. Isetshenziswa njengenkomba yokumelana ne-inkervingen. Ngenaliti yensimbi umugqa udwetshwa (isivinini esinqunyiwe nokucindezela) endaweni eboshwe. Ngaso sonke isikhathi lapho umugqa udwetshwa ngenaliti isisindo esindayo sibekwa yenaliti. Okwamanje lapho ukugqoka konakalisiwe (inaliti ensimbi) inani lesisindo senaliti liwuphawu lobulukhuni beClemen.
Impact
Umthelela oqondile noma umthelela ongaqondile: I-ASTM D-2794 ye-ISO 6272.Impact (ukuguqulwa okusheshayo) ihlolwe nge- impacttester. Isimiso sihlanganisa isisindo esiwa sisuka ezindaweni eziphakeme ezihlukene endaweni eboshwe (okuqondile : embozweni, ngokungaqondile ohlangothini olungemuva lwephaneli yokuhlola eboshwe). Umthelela, lapho i-indent ku-coating ingameleli umthelela wokuqhekeka, icashunwe ngo-kg.cm, ngo-Nm noma ngamayintshi/amaphawundi.
Uzothola izihloko eziningi mayelana nezakhiwo ze-powder coatings.