1. Ts'ebetso ea tlhahiso ea poleiti ea tšepe ea 'mala
poleiti ea tšepe ea mebala (e tsejoang hape e le poleiti ea mebala, poleiti ea tšepe e koahetsoeng ka mebala,ppgi ppl) e thehiloe holim'a poleiti ea tšepe e nang le serame, poleiti ea galvanized steel kapa galvalume steel coil, ka mor'a ho hloekisa holim'a metsi (ho hloekisa, ho hloekisa, phekolo ea phetoho ea lik'hemik'hale), le ho roala (mokhoa oa ho roala ka rolara), sehlahisoa se entsoeng ka ho baka le ho pholile.
Sebopeho sa ho roala se kenyelletsa liaparo tse peli le ho baka e le 'ngoe, liaparo tse peli le lihobe tse peli, joalo-joalo Bophelo ba tšebeletso bo sa lefelloeng bo ka ba lilemo tse 10-30 ho itšetlehile ka sepakapaka se potolohileng.
Mokhoa o ka sehloohong oa tlhahiso ea mofuta o tloaelehileng oa ho roala ka mefuta e 'meli le mefuta e' meli ea ho baka e 'meli e tsoelang pele ea ho roala ka mebala ke: uncoiler --------------stitching machine-------pressing roller-------tensioning machine--- -Uncoiling Looper-----Alkaline Degreasing----Cleaning----Drying-----Passivation-----Drying------Beginning Coating ------- Coating ea pele le drying------ topcoat fine coating------ topcoat drying------ air cooling and cooling------ winding work Set ----- rewinder----- (the moqolo o latelang o phuthetsoe ebe o kenngoa polokelong).
Li-substrates tse tloaelehileng tsa coil ea tšepe e koahetsoeng ka mebala (ppgi ppgl coil)
(1) Substrate e pholileng e batang
Letlapa la 'mala le hlahisoang ho tloha substrate e pholileng e batang e na le ponahalo e boreleli le e ntle' me e na le ts'ebetso ea poleiti e pholileng;leha ho le joalo, mengoaha efe kapa efe e menyenyane ka holim'a barbotage e tla pepesa substrate e batang moeeng, e tla pepesa ka potlako tšepe ho Hlahisa mafome a khubelu.Ka hona, lihlahisoa tse joalo li ka sebelisoa feela bakeng sa mehato ea nakoana ea ho itšehla thajana le thepa ea ka hare e nang le litlhoko tse tlaase.
(2) Chelete e chesang e nang le galvanized substrate
Sehlahisoa se fumanoeng ka ho roala lesela la manyolo holim'ahot-dip galvanized coilke lakane e kolobisitsoeng ka masenke a chesang ka 'mala.Ntle le ts'ireletso ea zinki, ho roala ha manyolo ka holim'a letlapa le koahetsoeng ka mebala e chesang-dip e boetse e phetha karolo ea ho kenya letsoho le ho sireletsa, ho thibela mafome, 'me bophelo ba tšebeletso bo bolelele ho feta ba hot-dip. letlapa la masenke.Likahare tsa zinki tsa substrate e chesang-dip galvanized ka kakaretso ke 180g/m2 (mahlakore a mabeli), 'me boholo ba zinki bo ka har'a substrate ea hot-dip galvanized bakeng sa mohaho oa bokantle ke 275g/m2.
(3) Letlapa le chesang la Al-Zn
Ka kopo, hkhoele ea ot-dip galvalumee ka boela ea sebelisoa e le li-substrates tse koahetsoeng ka mebala (55% AI-Zn le 5% AI-Zn).
(4) Substrate e entsoeng ka motlakase
Letlapa la elektro-galvanized le sebelisoa e le substrate, 'me sehlahisoa se fumanoang ka ho roala pente ea tlhaho le ho baka ke letlapa le nang le mebala e entsoeng ka elektro-galvanized.Hobane lesela la zinki la letlapa la electro-galvanized le le tšesaane, lihlahisoa tsa zinki hangata ke 20/20g/m2, kahoo sehlahisoa sena ha sea lokela ho sebelisoa.Etsa marako, marulelo, joalo-joalo ka ntle.Empa ka lebaka la ponahalo ea eona e ntle le ts'ebetso e ntle ea ts'ebetso, e ka sebelisoa haholo lisebelisoa tsa lapeng, molumo, thepa ea ka tlung ea tšepe, mokhabiso oa kahare, jj.
Pente e ka holimo e koahetsoe ka likarolo tse peli tsa pente le lesela le koahetsoeng ka 'mala ka morao (pente ea mofuta ona hangata ha e loketse ho sebelisoa ka pele)
Prepainted steel coil (ppgi ppgl) ke sehlahisoa se entsoeng ka lakane ea tšepe e kentsoeng ka serame, lakane e chesang-dip kapa lishiti tsa tšepe tsa galvalume ka mor'a ho hloekisoa ha bokaholimo, phosphating le kalafo ea chromate, ebe e apesoa ka pente ea tlhaho ebe e apehoa.Lisebelisoa tse atisang ho sebelisoa bakeng sa lipoleiti tsa tšepe tse nang le mebala ke polyester (BHP XRW coating system, Baosteel JZ, Korea PGS, Taiwan PE), e lateloa ke silicone resin (PSS), fluorine resin (PVDF), joalo-joalo Sebopeho sa ho roala se arotsoe ka tse peli. Botenya ba ho roala ka kakaretso ke 20-25μ holim'a metsi le 8-10μ ka morao.Litekanyetso tse atisang ho qotsoa bakeng sa maqephe a tšepe a koahetsoeng ka mebala ke American ASTM A527 (galvanized), ASTM AT92 (aluminium-zinc), Japanese JIS G3302, European EN/0142, Korea KS D3506, Baosteel Q/BQB420
Win Road International Steel Product
Nako ea poso: Jun-22-2022