Fastener surface treatment process: galvanizing, phosphating, blackening, ndeipi yandinofanira kusarudza?

Muindasitiri yemazuva ano, fasteners zvinhu zvakakosha zvekubatanidza zvikamu, uye kuita kwavo kunobata zvakananga kugadzikana uye kuchengetedzeka kwemidziyo yese. Kurapa kwepamusoro kwezvisungo hakusi kungoenderana nechitarisiko chavo chakanaka, asiwo nekuita kwavo kwe-anti-corrosion uye hupenyu hwebasa. Nokudaro, kusarudza nzira yakakodzera yekurapa kwepamusoro yakave chikamu chakakosha chekugadzira fastener chisingagoni kuregererwa.

Kutanga, ngatitaurei nezve inowanzoshandiswa electrogalvanizing. UYElectrogalvanizing chave chipfeko chakajairwa chezvisungo zvekutengesa zvine mutengo wakaderera uye chitarisiko chakanaka. Nekudaro, iyo anti-corrosion performance haina kushamisira, kunyanya muhunyoro hwepamusoro kana nharaunda dzinoora, uye kusimba kwayo kunoda kuvandudzwa. Kuti agadzirise dambudziko iri, mamwe akakosha sealers akaunzwa kuti awedzere hupenyu hwayo hwekurwisa-corrosion. Asi mutengo wekurapa kwakadaro wakawedzerawo, uye inoda kuyerwa zvichienderana nemamiriro ekushandiswa chaiwo.

Zvinotevera ndizvophosphating. Phosphating haingogoneki chete, asiwo ine yakanaka corrosion resistance uye kupfeka kusagadzikana, kunyanya yakakodzera kune yakakwirira-simba mabhoti. Oil mushure me phosphating inogona kuwedzera kuvandudza kushanda kwayo kwe-anti-corrosion uye yakakodzera kubatanidzwa kwezvikamu zvakakosha. Zvakakodzera kutaura kuti phosphating inogonawo kudzivirira zvinobudirira hydrogen embrittlement, inova chinhu chinofanirwa kutariswa mukugadzira mabhaudhi akasimba.

Ngatitaurei nezvazvooxidation (kusviba)kurapwa. Iyi nzira yekurapa yakanyanya kudhura-inodhura, asi ichaita ngura nekukurumidza kana pasina mafuta. Nokudaro, inowanzobatanidzwa nemafuta kuti uwedzere hupenyu hwebasa. Kunyangwe iyo corrosion kuramba ishoma, ichiri sarudzo yehupfumi mune dzimwe nguva dzisingadhure.

Cadmium electroplatinginoita zvakanaka munzvimbo dzemumhepo yemugungwa nekuda kwekusagadzikana kwayo kwekuora. Nekudaro, iyo yakakwira mutengo uye kutambisa yemvura kurapwa mutengo panguva yekugadzirisa inodzikamisa huwandu hwekushandisa kwayo. Chromium electroplating inozivikanwa nekuoma kwayo kwakanyanya uye kusapfeka, asi zvakare ine mutengo wakakwira uye matambudziko ehydrogen embrittlement.

Nickel platinginzira yekurapa pamusoro inogona kudzivirira ngura uye kuchengetedza yakanaka conductivity. Inonyanya kushandiswa muzviitiko apo zvose corrosion resistance uye conductivity zvinodiwa, zvakadai semabheti ekutungamirira-kunze emabhatiri emotokari.

Kupisa-dip galvanizing uye Zinc infiltrationnzira mbiri dzekurapa dzepamusoro dzinoshandiswa zvakanyanya muinjiniya. Kupisa-dip galvanizing inozivikanwa nekukobvura kwayo kwayakaita uye kunaka kwekusagadzikana kwecorrosion, asi inogona kukonzera matambudziko nekuomerwa mukukorobha shinda dzemukati nekunze. Kupinda kweZinc kunofarirwa nekufanana kwayo kwakanaka, kusimba kwekubatana kwepamusoro neiyo substrate, uye kuchengetedza kwezvakatipoteredza uye kusasvibiswa-kusina.

Pakupedzisira, tinofanira kutauraDacrometkurapwa. Iyi mhando nyowani yeanti-corrosion coating haina chete yakanakisa anti-corrosion performance, asiwo haina hydrogen embrittlement dambudziko uye yakanaka torque-preload kuenderana. Nekudaro, inodhura uye ine matambudziko ezvakatipoteredza, saka inoda kushandiswa mushure mekunyatsofunga nezve mutengo uye zvinodiwa zvezvakatipoteredza.

Muchidimbu, kusarudzwa kwekusimbisa kwepamusoro kurapwa kunoda kutarisisa zvizere zvinhu zvakawanda senge anti-corrosion performance, mutengo, nharaunda yekushandisa, zvinodiwa zvezvakatipoteredza, uye zvinodiwa zvekushanda kwechibatiso pachacho. Chete nekutsvaga nzira yakakodzera yekurapa kwepamusoro tinogona kuve nechokwadi chekuti fastener inochengetedza kushanda kwakasimba uye kuchengetedzwa kwakavimbika mukushandiswa kwenguva refu.

Webhusaiti yedu:https://www.fastoscrews.com/, inzwa wakasununguka taura nesu.