Yekugadzira screw fasteners, kurapa kwepamusoro inzira ine isingadzivisike, vatengesi vazhinji mukubvunza nezve screw fasteners, nzira yekurapa pamusoro, iyo yakajairwa network maererano neruzivo rwakapfupikiswa nezve pamusoro peiyo screw fasteners yakajairika kugadzirisa nzira kune marudzi masere. yemafomu, akadai se: dema (bhuruu), phosphating, inopisa dip zinc, dacromet, magetsi emagetsi, chrome plating, nickel uye zinc impregnation.Iyo fastener screw surface treatment iri kuburikidza neimwe nzira yekugadzira chivharo chekuvhara pamusoro pechishandiso chebasa, chinangwa chayo ndechekuita kuti pamusoro pechigadzirwa ive yakanaka, anti-corrosion effect.
Nzira sere dzepamusoro dzekurapa dzefastener screws:
1, Dema (bhuruu)
Mafasteners aifanira kurapwa neatema akaiswa mutangi remhinduro (145±5℃) yesodium hydroxide (NaOH) uye sodium nitrite (NaNO2) oxidant kudziyisa uye oxidation, pamusoro pezvisungo zvesimbi zvakagadzira jira remagineti Fe3O4 (Fe3O4). ) firimu, ukobvu kazhinji 0.6 - 0.8μm dema kana bhuruu dema.Ose ari maviri HG/20613-2009 uye HG/T20634-2009 zviyero zvezvisungo zvinoshandiswa mumidziyo yekumanikidza zvinoda bhuruu kugadzirisa.
2, Phosphating
Phosphating inzira yekugadzira phosphate kemikari inoshandura firimu nemakemikari uye electrochemical reaction.Iyo phosphate inoshandura firimu inonzi phosphating film.Chinangwa chephosphating ndechekupa dziviriro yesimbi yepasi uye kudzivirira simbi kubva pakuora kusvika pamwero wakati.Inoshandiswa sekutanga pamberi pekupenda kuti uvandudze kunamatira uye kusagadzikana kwekuora kwefirimu repende;Inogona kushandiswa kuderedza friction uye lubrication musimbi inotonhora kushanda maitiro.Chiyero chedhayamita hombe kaviri - misoro yezvitsigiro zvemidziyo yekumanikidza inoda phosphating.
3, Kupisa dip galvanizing
Kupisa zinc dipping ndeyekunyudza nhengo yesimbi mushure mekubvisa ngura mumhinduro ye zinc yakanyungudutswa pakupisa kwepamusoro kunosvika 600 ℃, kuitira kuti pamusoro penhengo yesimbi inonamirwa ne zinc layer.Ukobvu hwezinc layer haifanire kunge iri pasi pe65μm yendiro yakatetepa isingasviki 5mm, uye isingasviki 86μm kune gobvu ndiro 5mm uye pamusoro.Saka tamba chinangwa chekudzivirira ngura.
4. Dacroll
DACROMET ishanduro yeDACROMET uye chidimbu, DACROMET, DACROMET rust, Dicron.Iyo itsva anticorrosive coating ine zinc poda, aluminium poda, chromic acid uye deionized mvura sezvinhu zvikuru.Iko hakuna hydrogen embrittlement dambudziko, uye torque-preload kuenderana kwakanaka kwazvo.Kana kuchengetedzwa kwezvakatipoteredza kwehexavalent chromium kusingatariswe, iyo inonyanya kukodzera kune yakakwirira simba fasteners ine yakakwirira anticorrosion zvinodiwa.
5, Electric galvanizing
Electrogalvanizing, inozivikanwawo sekutonhora galvanizing muindasitiri, inzira yekushandisa electrolysis kuumba yunifomu, dense uye yakanyatso kusanganiswa simbi kana alloy deposition layer pamusoro peiyo workpiece.Kana ichienzaniswa nedzimwe simbi, zingi yakachipa uye iri nyore kupfekedza simbi, yakaderera kukosha kwecorrosion resistance electroplating, inoshandiswa zvakanyanya kuchengetedza simbi zvidimbu, kunyanya kurwisa ngura yemuchadenga, uye inoshandiswa pakushongedza.Nzira dzekugadzira dzinosanganisira slot plating (kana kuturika plating), roll plating (yakakodzera zvikamu zvidiki), bhuruu plating, otomatiki plating uye inoenderera plating (yakakodzera waya, tambo).
Electrogalvanizing ndiyo inonyanya kushandiswa coating for commercial fasteners.Yakachipa uye inotaridzika zviri nani, uye inogona kuuya mune nhema kana yegirini yemauto.Nekudaro, iyo anticorrosion performance yakajairika, iyo anticorrosion performance ndiyo yakaderera mu zinc plating (coating) layer.General electrogalvanizing kusarerekera munyu kupfapfaidza bvunzo mukati maawa makumi manomwe nemaviri, kune zvakare kushandiswa kweiyo chaiyo sealant, ichiita iyo isina kwayakarerekera munyu yekupfapfaidza bvunzo kupfuura maawa mazana maviri, asi mutengo unodhura, i5 ~ 8 zvakapetwa kaviri galvanizing.
Mafasteners ezvikamu zvezvimiro anowanzo ane mavara zinc uye chena zinc, senge 8.8 giredhi giredhi mabhaudhi.
6, Chrome yakavharwa
Chrome plating inonyanya kuvandudza kuoma kwepamusoro, runako, kudzivirira ngura.Chromium plating ine kugadzikana kwakanaka kwemakemikari uye haina kuita mualkali, sulfide, nitric acid uye yakawanda organic acids, asi inonyungudika muhydrohalic acid (senge hydrochloric acid) uye inopisa sulfuric acid.Chromium yakakwirira kune sirivheri uye nickel nekuti haishandure ruvara uye inochengetedza kutaridzika kwayo kwenguva yakareba kana ichishandiswa.
7, Nickel plating
Nickel plating inonyanya kupfeka-inodzivirira, anti-corrosion, anti-ngura, kazhinji kutetepa ukobvu hwekuita kunokamurwa kuita electroplating uye makemikari mapoka maviri.
8, Zinc impregnation
Iyo musimboti wepoda zincizing tekinoroji ndeyekuisa iyo zincizing agent uye simbi uye simbi zvikamu muchoto chezincizing uye kupisa kusvika ku400 ℃, uye maatomu ezinc anoshanda achapinda mukati mesimbi nesimbi kubva kunze kuenda mukati.Panguva imwecheteyo, maatomu esimbi anopararira kubva mukati kunze, ayo anoumba zinc-iron intermetallic compound, kana zinc coating, pamusoro pezvikamu zvesimbi.
Nguva yekutumira: Oct-30-2021