Ukuthi yini okufanele ukwenze ukuhlela ukusukuma kwe-paint powder coating kwenzuzo yezindustria

Qala Ngamapowda, Akasi Ngomgun

Indlela eyokuphela kakhulu ukuthi ubungakanani bekufakwa kwezinkulungwane zokubhoshwa kwezinkulungwane zokubhoshwa ngokushesha kuyokuthi uthathe zonke izinkulungwane njengoba ziyafanana. Ukugcina kwezinkulungwane, ukuthi zihlambekile njani, nokuthi zihlambekile njani kuzoba yindlela eyokuthi zingabhekiswe kumkhawulo. Izingcingo eziningi zokugcina zingahlambeki kahle, zingahlambeki kahle kahle, futhi zingabulawa amafiltara. Izingcingo ezinkulu kakhulu zingabuka phansi futhi zingabhabha kahle. Izinkulungwane zokubhoshwa ngokusebenza kahle kuzoba nekugcina okuhle, okungenani phakathi kwe-30 kanye ne-45 microns. ISO 8130-13 ikhombisa ukuchaza ukugcina kwezinkulungwane ngokusebenzisa isilayitha, futhi le data iyisilinganiso esihle kunezilinganiso zokubhoshwa ngokusebenzisa isifunda. Ukubuyisa kwezinkulungwane kuyisidingo sokubuyisa kwe-10 kuya kwe-25 percent, kodwa izinkingo nezinkingo zokubulawa zihamba ngokushintsha. Uma kubuyiselwa ngaphandle kokuchazwa, ukusebenza kwemgun kushintsha ngokushintsha kwezikhathi.

Setha umgun kabefore ukuthi uthinte isikhathi sokuhamba

Izilungiselelo zesigubhu ziyisibonelo esikade sikhuluma ngakho uma ubude besifunda sobukhulu kusobala. Ukuhlanya kwesigubhu, ukungenisa kwesigubhu, ukuthiwa kwesigubhu, ukuthiwa kwesigubhu, nokuphakama kwesigubhu kuzokwenzana. Ukuphakama kwekholona kungahlela ukuthiwa kwezinto, kodwa ngaphandle kwalokho kungahlela ukuthiwa kwezinto, ikakhulu emasifundeni amaningi. Ukuphakama okufanayo kusobala kungahlela ukuthiwa kwezinto kodwa kungahlela ukuthiwa kwezinto ne-“orange peel”. Ukuphakama okuphakade kungahlela ukuthiwa kwezinto kusigubhu. Isikhundla sokuvula esihle siyizigubhu ezingu-150 kuze ne-300 mm kusukela ekuphakameni kwesigubhu kusukela kumqondo. Amaphakathi ayesigubhu ayezinkundla zokugcina kufanele abe nesigubhu esiphakade noma izinjongo ezingcono. Kufanele isigubhu sicwaningwe ngokusebenzisa isithombe sokucwaninga, akalindeki ngokuhlola ngokuchaza.

Ukuhambisana ne-makhotho kuyizinkinga zokusebenza ngokushesha

Uma indawo ayihambisanwanga, ipowda ayikho lona umlando wokuthi ibhale. Amakhotho okuphatha amakhanda aphakathi kwezikhathi eziningi, futhi leliyilayi libhekise isibonelo sokuhambisana. Ukuhambisana kungahamba kusukela eminganani yamahomu kuze kube nemegohm eziningi ngaphandle kokuthi kubonakaliswe. Ukubhala ngomkhombiso ngemva yokugcina kwesikhathi esinye kuyinto engeyinkimbinkimbi, kodwa izinhlangano eziningi ziyagcina. Ukubhala kwamakhotho kuyasebenza kanye. Amakhotho okuphatha indawo ngaphezulu kwezinye kwenza izikhumba futhi zibeka isibonelo sokubhala. Amakhotho okuphatha ngaphezulu kwezinye kuyenza ukuthi kubekwe isikhumba esingapheliyo. Emunye wesikhumbu se-China emzantsi esebenzisa ilayini yepoxy-polyester yamakhanda emzantsi, ubude bewebhile bawubonakalisa kune-30 microns ngaphakathi kwe-rack efanayo. Umthwalo akawubonakali ngumgun. Amakhotho wawunene nesibonelo sokuhambisana esiphakathi kwe-5 megohm. Ngemuva kokususa amakhotho, ukudibanisa ukubhala kwe-continuity yokuqondana, nokuguqula ukuphakanyiswa kwe-rack, ubude bewebhile buhlelwe futhi ukusebenzisa ipowda kushushiswa.

Ukuvulwa Kwamafutha, Ukuphakanyiswa Kwamandla, Nokubuyisela Kufanele Kwenze Kusobala

Ukuvulwa kwamafutha kwebhuthi kubhekisa indawo lapho amafutha ayaphambana. Ukuvulwa okukhulu kakhulu kuyabusa amafutha phansi kwezinto ezihlukene futhi kuyabusa kumafutha emafutha. Ukuvulwa okuncane kakhulu kuyavumela amafutha ukuthwasa futhi ukuthwasa kwebhuthi. Izibhuthi zonke zihamba ngokuvulwa kokubusa kwe-0.3 ku-0.6 m/s kwindawo yokuvulwa, kodwa inombolo eyodwa iyaphendula kubakhiwo bekhabhuthi nesayizi yezinto ezihlukene. Ukuphakanyiswa kwamandla kungahleli ukuthi amafutha akhululeka kumkhumbi wokugcina nasezindaweni zokuhambisa. Ukuphakanyiswa okuncane kakhulu kungahleli ukuthi kubhekise isithunzi sokuzimba futhi kuchaza ukuthi ukucisha kubalulekile. Ubukhulu bekhalasi yamafutha akukho okukhethwa. Amanki, amanzi, namaphakathi ekhalasini kungahleli ukuthi kubhekise amafutha futhi kubhekele izinkinga. Izinhlangano zokubuyisela kufanele zicishwe ngokuphelele. Uma isikhumbuzi noma isikhumbuzi sesikhumba sibhekise kakhulu, amafutha amancane abuyiselwa futhi ukuthenga kwezinto ezihlukene kubeka phansi.

Isikhumbuzi Sokubuyisela Nokubuyisela Kwesikhathi Sokuqala Kufanele Kwenze Kusobala

Ukuphakatha kwe-powder akuyiyo kuphela ukuphakatha. Ukuphakatha kwesikhathi sokugcina kuthetha ngokubambisana nokubonakaliswa. Isiqephu esihlanu, esihlanu kakhulu, sibeka isiqephu esihlanu esikwazi ukubambisana nokufaka isithembiso futhi ukuzobuka. Amaphoyinti, amandla, nokubusa kwe-rinse kwenza izindawo ezinkulu nezinkinga zokubambisana. Ukuphakatha kwe-cure kubalulekile futhi. Konke okuphakathwa kwe-powder kunezindawo eziningi. Amaphoyinti we-epoxy, amaphoyinti we-epoxy-polyester, namaphoyinti amashumi amaningi ayisifunda ngokuhluhlukile. Ukuphakatha okungafanele kusinika ukuthula okungafanele kwezinhlobo zezinto. Ukuphakatha okuphakade kungabonisa ubomvu, ukuphakama kwe-gloss, noma ukuthula kwe-film. Umkhondo wesisiqephu kubalulekile ngoba iziqephu ezinkulu zemetal zizodlala izinsuku eziningi ukuze zifike ekuphakatheni. Isivinini sesikonveya esisewofana nesiqephu esincane singasenza ukuthi sisigqamise kwezinqamuzi ezingcono. Ukuphakatha kwe-yield kwe-pasifirst kushaya uma ukuphakatha kwe-oven kufaniswa ngendata logger, akuyiyo kuphela ukuseta ngendlela yokufaka isiqephu. Amathermocouples ayesiqephu esihlanu asibonisa ukuthi isiqephu siphakathi kwe-metal. Lokhu kushaya kancane kunesibonelo sesikonveya, kodwa kungavimba ukuthi kusenziwe ukusebenza kabusha kwezinsuku zonke.

Sebenzisa i-data nezinye izimali zokuphakatha ukuze ufunde isibonelo sokubambisana

Ukuthuthukisa ukusebenza kwe-spraying kukho impilo yezindaba, akuyi into eyodwa. Ukugcina kungaba ngokubaluleka kwemithwalo yepowda, izimboni zomshini, ukugcina kwe-grounding, umoya owenziweyo, ukubuyela emuva, ukuphatha kabusha, noma ukufika kwemvelo. Ukuziphatha kungenzeka ukuthi kuthuthukisa into eyodwa kodwa kusula enye. Ukwenza umbiko othile wokuzilungisa kumshini uyasebenza ngendlela enzima. Guqula into eyodwa ngasinye, bala ubude bewepowda, ukuthuthukisa kokubuyela emuva, nokuvalelwa kwezinkinga, futhi gcinani izimboni ezihambisana ngokuphelele kwesikhathi sokusebenza. Uma umshini uchaze izimboni zomshini, izimo zebhuthi, nobude bewepowda ngalokhu okuhlanganisa, kubonakala izindlela ozizobona ngokuchaza kwezibhodi, kodwa akubonakali ngokuchaza kwezibhodi. I-Hsinda iyathumela i-epoxy, i-epoxy-polyester, nezindaba zepowda eziphelele ngokusebenzisa i-ERP ne-MES, ngekapasiti yeyo ngonyaka eyingu-5,000 tons. Ukubaluleka kwezimboni zepowda nezimboni zebhatchi ziyakunceda ukuthi ukubuyela emuva kumshini kubhekwe ngokucacileyo, okunceda amafaktori ukuthuthukisa ukusebenza kwezinkambo zepowda zokuphatha ngaphandle kokuziphatheka ngokusha.