Ezisibhozo Unyango Surface For Fastener Izikrufu
2021-10-30 00:00:00
Ukuveliswa kwe-screw fasteners, unyango lomphezulu yinkqubo engenakuthintelwa, abathengisi abaninzi ekubuzeni malunga ne-screw fasteners, indlela yonyango lomphezulu, umgangatho womnatha ngokolwazi olushwankathelweyo malunga nomphezulu we-screw fasteners iindlela eziqhelekileyo zokuqhuba kukho iindidi ezisibhozo. iifom, ezifana: omnyama (oluhlaza okwesibhakabhaka), i-phosphating, i-hot dip zinc, i-dacromet, i-galvanized electric, i-chrome plating, i-nickel kunye ne-zinc impregnation. I-fastener screw yonyango lomphezulu yindlela ethile yokwenza umaleko wokugquma phezu kwendawo yokusebenza, injongo yayo kukwenza umphezulu wemveliso ibe mhle, i-anti-corrosion effect.
Iindlela ezisibhozo zoNyango lweFastener Screw:
1, Mnyama (bhlowu)
Iziqhoboshi eziza kunyangwa ngomnyama zafakwa kwitanki yesisombululo (145±5℃) yesodium hydroxide (NaOH) kunye nesodium nitrite (NaNO2) yokufudumeza kwe-oxidant kunye ne-oxidation, umphezulu wezibophelelo zetsimbi wenze umaleko weMazibuthe Fe3O4 (Fe3O4) ) ifilimu, ubukhulu besiqhelo yi-0.6 — 0.8μm emnyama okanye emnyama. Zombini imigangatho ye-HG/20613-2009 kunye ne-HG/T20634-2009 yeefasteners ezisetyenziswa kwiinqanawa zoxinzelelo zifuna ukucwangciswa kweblue.
2, Phosphating
I-Phosphating yinkqubo yokwenza ifilimu yokuguqula imichiza ye-phosphate nge-chemical reaction kunye ne-electrochemical reaction. Ifilimu yokuguqula i-phosphate ibizwa ngokuba yifilimu ye-phosphating. Injongo ye-phosphating kukubonelela ngokukhuseleka kwesiseko sesinyithi kunye nokukhusela isinyithi ukuba singabikho kumlinganiselo othile. Isetyenziswe njenge-primer ngaphambi kokupenda ukuphucula ukunamathela kunye nokuchasana kwe-corrosion yefilimu yepeyinti; Ingasetyenziselwa ukunciphisa ingxabano kunye nokuthambisa kwinkqubo yokusebenza yentsimbi ebandayo. Umgangatho wedayamitha enkulu ephindwe kabini - izikhonkwane ezinentloko kwiinqanawa zoxinzelelo zifuna i-phosphating.
3, Idiphu eshushu yokufaka igalvanizing
I-zinc eshushu yokudipha kukuntywilisela ilungu lentsimbi emva kokususwa komhlwa kwisisombululo se-zinc esinyibilike kubushushu obuphezulu malunga ne-600 ℃, ukuze umphezulu welungu lentsimbi udityaniswe ne-zinc layer. Ubukhulu be-zinc layer abuyi kuba ngaphantsi kwe-65μm kwipleyiti encinci engaphantsi kwe-5mm, kwaye ingabi ngaphantsi kwe-86μm ye-plate eshinyeneyo ye-5mm nangaphezulu. Ngaloo ndlela dlala injongo yokuthintela umhlwa.
4. Dacroll
I-DACROMET yinguqulelo kunye nesifinyezo se-DACROMET, i-DACROMET, i-DACROMET rust, i-Dicron. Yinto entsha yokugquma i-anticorrosive ene-zinc powder, i-aluminium powder, i-chromic acid kunye namanzi adibeneyo njengezona zinto ziphambili. Akukho ngxaki ye-hydrogen embrittlement, kwaye i-torque-preload consistency ilungile kakhulu. Ukuba ukhuseleko lokusingqongileyo lwe-chromium enehexavalent aluthathelwa ngqalelo, lufaneleke kakhulu kwiziqhoboshi ezinamandla ezineemfuno eziphezulu ze-anticorrosion.
5, Ukugalela koMbane
I-Electrogalvanizing, eyaziwa ngokuba yi-galvanizing ebandayo kushishino, yinkqubo yokusebenzisa i-electrolysis ukwenza iyunifomu, i-dense kunye nentsimbi edibeneyo okanye i-alloy deposition layer kumphezulu we-workpiece. Xa kuthelekiswa nezinye isinyithi, i-zinc ayibizi kakhulu kwaye kulula ukuyigquma isinyithi, i-electroplating yexabiso eliphantsi yokumelana ne-corrosion, isetyenziswa kakhulu ukukhusela iindawo zentsimbi, ngakumbi ngokuchasene nokuhlwa kwe-atmospheric, kwaye isetyenziselwa ukuhombisa. Ubuchule bokudibanisa bubandakanya i-slot plating (okanye i-hang plating), i-roll plating (efanelekile kwiindawo ezincinci), i-blue plating, i-automatic plating kunye ne-continuous plating (efanele ucingo, i-strip).
I-Electrogalvanizing yeyona nto isetyenziswa ngokuqhelekileyo kwi-fasteners yorhwebo. Ixabiso eliphantsi kwaye ikhangeleka ngcono, kwaye inokuza ngombala omnyama okanye ohlaza umkhosi. Nangona kunjalo, ukusebenza kwayo kwe-anticorrosion kuqhelekileyo, ukusebenza kwayo kwe-anticorrosion yeyona nto iphantsi kwi-zinc plating (i-coating) layer. Uvavanyo ngokubanzi lwe-electrogalvanizing engathathi hlangothi yokutshiza ityuwa kwiiyure ezingama-72, kukwakho ukusetyenziswa kwe-sealant ekhethekileyo, ukwenza uvavanyo lokutshiza ityuwa olungathathi hlangothi ngaphezu kweeyure ezingama-200, kodwa ixabiso liyabiza, liphindwe ka-5 ~ 8 kune-galvanizing jikelele.
Izibophelelo zamalungu olwakhiwo ngokuqhelekileyo ziba zinc ezinemibala kunye ne-zinc emhlophe, njenge-8.8 yeebholiti zebakala zorhwebo.
I-6, i-Chrome ifakwe
I-Chrome plating ikakhulu kukuphucula ubunzima bomhlaba, ubuhle, ukuthintela umhlwa. I-Chromium plating inozinzo oluhle lweekhemikhali kwaye ayisebenzi kwi-alkali, i-sulfide, i-nitric acid kunye ne-organic acids eninzi, kodwa i-soluble kwi-hydrohalic acid (efana ne-hydrochloric acid) kunye ne-asidi ye-sulfuric eshushu. I-Chromium iphezulu kunesilivere kunye ne-nickel kuba ayitshintshi umbala kwaye igcina ukubonakala kwayo ixesha elide xa isetyenziswa.
7, iNickel plating
I-Nickel plating ayinyangeki, i-anti-corrosion, i-anti-rust, ubukhulu becala ubukhulu benkqubo bohlulwe ngokwe-electroplating kunye neendidi ezimbini zeekhemikhali.
8, ukufakwa kweZinc
Umgaqo weteknoloji ye-zincizing ye-powder kukubeka i-agent ye-zincizing kunye nentsimbi kunye neengxenye zetsimbi kwisithando somlilo kunye nobushushu ukuya malunga ne-400 ℃, kunye ne-athomu ye-zinc esebenzayo iya kungena kwintsimbi kunye neengxenye zetsimbi ukusuka ngaphandle ukuya ngaphakathi. Ngelo xesha, ii-athomu zentsimbi zisasazeka ngaphakathi ngaphakathi, eyenza i-zinc-iron intermetallic compound, okanye i-zinc coating, phezu kwendawo yentsimbi.