Ukuqina kombala we-zinc-plated pin shaft? 

Uyabona lo mbuzo uvela kakhulu kwii-specs kunye nee-RFQs. Wonke umntu ufuna ipini eyomeleleyo kwaye ekhangeleka ilungile, ihlala ichaza i-zinc emibalabala ngathi yinto enye, egqibeleleyo. Ubunyani bunentsingiselo ngakumbi. Loo ngubo imenyezelayo eluhlaza okwesibhakabhaka, emthubi, okanye emnyama asiyopeyinti nje; ngumaleko wokuguqulwa kwechromate ngaphezulu kwe-zinc, kwaye ukuqina kwayo kuxhomekeke kwizinto ezilishumi elinambini abantu abadla ngokungazihoyi. Akunjalo nje malunga neeyure zokutshiza ityuwa kwiphepha ledatha.

Umbono ongeyiyo ongundoqo: Umbala ulingana nokusebenza

Uninzi lwabantu abathengayo, kunye neenjineli ezithile, babona umbala njengokugqiba. Baza kucela ipini ye-zinc eluhlaza okwesibhakabhaka becinga ukuba umbala ngokwawo ubonelela ngokumelana nomhlwa. Lo ngumgibe wokuqala. Umbala yiproduct yenkqubo yechromate-blue ngokuqhelekileyo i-iridescent chromate, emnyama inokuba yichromate emnyama, njalo njalo. Ikhaka lokwenyani bubungqingqwa be-zinc engaphantsi, elinganiswa kwii-microns, kunye nomgangatho wetywina lechromate. Ndibone izikhonkwane ezinombala oluhlaza okwesibhakabhaka obukekayo, onzulu osilela kwangaphambi kwexesha ngenxa yokuba idiphozithi ye-zinc yayibhityile kwaye inencambu, okanye i-chromate rinse yayingcolisekile. Umbala wawugqibelele wade wadubula umhlwa obomvu ngaphantsi.

Emva koko kukho i-substrate. Ukomelela kwe-pin shaft kuqala kwakudala ngaphambi kokubekwa. Ukuba wenza izikhonkwane ukusuka kwinqanaba eliphantsi, ucingo olungcolileyo kunye nokungafezeki komphezulu, ukucwangciswa kuya kukhulisa ezo mpazamo, ungazifihli. Sifunde oku ngendlela enzima kwiminyaka eyadlulayo kwibhetshi yezikhonkwane zeclevis zefenitshala yangaphandle. Iimpawu zifuna ukugqitywa kwe-zinc emnyama. Babekhangeleka bebahle, kodwa kwiinyanga nje ezintandathu kummandla oselunxwemeni, baba nomhlwa omhlophe nemingxuma enomhlwa. I-Post-mortem ibonise ukuba umcimbi yayingengowokuhlamba ngokutyabeka, kodwa umgangatho wemathiriyeli ongahambelaniyo ovela kumboneleli wentonga yocingo. Ukucwenga kulandele nje iikhonto zentsimbi engaphantsi.

Ulawulo lwenkqubo yinto yonke. Izigaba zokucoca kwangaphambili-ukunciphisa, ukunyuswa kwe-asidi-ngokuqinisekileyo kubaluleke kakhulu kunetanki yokucoca ngokwayo. Naliphi na ioli eseleyo okanye isikali se-oxide sithintela ukunamathela kwe-zinc efanelekileyo. Ndikhumbula ndindwendwela umzi-mveliso wokuqinisa, njenge-Handan Zitai Fastener Manufacturing Co., Ltd. phezulu eYongnian, eHebei-loo mmandla uyindawo enkulu yemveliso. Ubuwubona umahluko phakathi kwemigca. Ezona zingcono zazinokucoca okungqongqo kwizigaba ezininzi kunye nokuhlanjululwa ngokucokisekileyo. Imigca yexabiso eliphantsi inganqumla imijikelo yokuhlamba. Isiphumo? Izikhonkwane eziphumelele uvavanyo olukhawulezayo lweyure ezingama-24 zovavanyo lokutshiza ityuwa kodwa ziya kubonakalisa iingongoma zokungaphumeleli emva kwemijikelo embalwa ye-thermal okanye i-brasion encinci.

Apho Ukuqina Kwenyani Kuvavanywa

Kwihlabathi lokwenyani, i-pin shaft ayihlali kwilebhu engathathi hlangothi. Iyaphathwa, ifakwe, mhlawumbi ifumana ukungqubana, ukuvezwa kweekhemikhali, okanye ukukhanya kwe-UV. Ukumelana ne-abrasion yinto enkulu. Olo maleko lwechromate lubhityile, ludla ngokuba ngamaqhezu emicron. Ukuba isicelo sakho sibandakanya isilayidi sokutyibilikiswa ngaphakathi nangaphandle kwibhore ngokuphindaphindiweyo, loo ndawo inomtsalane inombala inokuguga ngokukhawuleza, iveze i-zinc yedini kunye nesiseko sentsimbi. Kwiimeko ezinjalo, umaleko we-zinc ongqindilili onechromate ecacileyo okanye emthubi (ethande ukuba ngqindilili kancinci) inokudlula ikhromatithi emnyama ebhityileyo, ehombisekileyo, nokuba emnyama inomlinganiselo ophezulu wokutshiza wetyuwa kuvavanyo olumileyo.

Ukubonakaliswa kwemichiza ngomnye umbulali othuleyo. Cinga ngeendibano ezikufutshane namagumbi ebhetri, okanye koomatshini apho kusetyenziswa izithambiso okanye izinyibilikisi zokucoca. Abanye abacoci bealkaline banokuhluba iingubo zechromate zisuka. Sasinecala elinezikhonkwane ezisetyenziswe kwisibiyeli senzwa yemoto. Bachaza iphinifa ye-zinc-plated blue yokukhusela umhlwa. Iplanti yokudibanisa isebenzise uhlobo oluthile lwesicoci semizi-mveliso kwiyunithi yokugqibela. Kwiiveki nje ezimbalwa, i-coating eluhlaza yajika yanebala kwaye yaba buthuntu. Umba ibikukungahambelani kwe-pH. Ifilimu yechromate yayingazinzanga kuloo ndawo yekhemikhali ethile. Ukulungiswa kwakungeyona nto ingcono ye-zinc plating, kodwa ukutshintshela kwi-chromate chemistry eyahlukileyo (i-trivalent passivate endaweni ye-hexavalent) eyayiyi-inert yekhemikhali ngakumbi kweso sicwangciso.

Emva koko kukho i-hydrogen embrittlement. Kwizikhonkwane zensimbi eziphezulu (ngaphezulu ~ 40 HRC), inkqubo ye-electroplating inokungenisa i-hydrogen kwintsimbi, iyenze ibe brittle kwaye ilungele ukuphuka ngokukhawuleza phantsi komthwalo. Lo ayingomba wokuqina kwezithambiso; kukusilela kokusebenza. Nawuphi na umenzi ohloniphekileyo ojongene nezikhonkwane eziqiniweyo kufuneka abandakanye inkqubo yokubhaka emva kokugcoba ukukhupha i-hydrogen. Yongeza iindleko kunye nexesha, kwaye ngamanye amaxesha ixabiso lenziwe ngababoneleli abasika iikona. Ngalo lonke ixesha ubuza ukuba ukubhaka kufakwe kwiindawo eziphezulu zamandla. Akuxoxiswana.

Umzekelo we-Handan kunye noRhwebelwano oluSebenzayo

Ukusebenza nabavelisi bevolumu kwiindawo ezinjengeSithili saseYongnian, ubona ukurhweba ngexesha langempela. Inkampani efana I-Handan Zitai Fastener Manufacturing (ungafumana uluhlu lwabo apha https //wwww.ziitasteners.com) imiselwe isikali, ibekwe ngasekunene ngamakhonkco othutho amakhulu. Inzuzo yabo ihambelanayo, i-high-volume processing. Kumgangatho iphini elinemibala ye-zinc izicelo-cinga ifanitshala yangaphakathi, uqhagamshelwano non-critical mechanical, abathengi elektroniki-banokuhambisa ixabiso kakhulu-esebenzayo, imveliso endilisekileyo-umgangatho. Ukomelela kuya kulunga kwimeko engqongileyo yangaphakathi.

Kodwa kwizicelo ezinzima okanye eziqatha, kufuneka ubandakanyeke nzulu. Kumalunga nokucacisa iinkcukacha: ubukhulu be-zinc (umzekelo, i-8-12μm min), uhlobo lwechromate (umzekelo, i-chromate emnyama ye-corrosion engcono kancinci, i-iridescent ye-aesthetics), kunye ne-post-plating sealant okanye i-topcoat. Ewe, isambatho esicacileyo se-organic phezu kwe-zinc plating inokonyusa kakhulu i-abrasion kunye nokumelana nemichiza. Yongeza elinye inyathelo kunye neendleko, kodwa iguqula ubomi benxalenye entsimini. Ngumahluko phakathi kwephini lokudlala lomntwana kunye nephini lokufakela idekhi yaselwandle.

Uhlalutyo lokusilela ngoyena titshala wakho ubalaseleyo. Sakhe safumana ibhetshi yezikhonkwane ezityheli eziplated cotter kumenzi wezixhobo zezolimo. Iingxelo zentsimi ziye zavela nomhlwa onzima emva kwesizini enye. Uhlalutyo lweLebhu lubonise ukuba umaleko wechromate wawungaphuhliswanga, phantse wawungekho kwiindawo. Umthubi ubukhulu becala ibiyidayi. Oyena nobangela? Ibhafu yechromate ediniweyo umthengisi wayezama ukuzolula. Isifundo: themba kodwa qinisekisa. Uvavanyo lomntu wesithathu kwiisampulu ezingaqhelekanga ezivela kwiibhetshi zemveliso yi-inshurensi ephantsi. Musa ukuxhomekeka nje kwisatifikethi sokugaya.

Ke, sithini iSigwebo soKuhlala ixesha elide?

Ixhomekeke. Owenziwe kakuhle i-zinc-plated pin shaft ngoguqulo olululo lwechromate yomelele ngokwaneleyo kuluhlu olukhulu lwezicelo. Ibonelela ngokhuseleko olulungileyo lokutya kunye nokumelana nokunxiba okundilisekileyo. Ukugqitywa kombala kunika umqobo osisiseko kunye nenzuzo yobuhle. Kodwa imida yayo icacile: i-abrasion eqhubekayo, i-acids eyomeleleyo okanye i-alkalis, i-high-temperature environments, kunye nokuntywiliselwa okuqhubekayo kwamanzi etyuwa kuya kuyoyisa.

Ukuba ufuna okungaphezulu, unyukela kwiplating yomatshini (ngcono kwiimilo ezintsonkothileyo, umngcipheko omncinci wokuhombisa), okanye iingubo ezifana ne-geomet okanye i-dacromet, okanye ekugqibeleni, insimbi engenasici. Kodwa ngeendleko, i-zinc-plated pin kunzima ukuyibetha. Undoqo kukulawula okulindelweyo kunye nokucacisa ngokuchanekileyo. Musa nje ukubhala i-zinc eluhlaza. Cacisa ibakala lesiseko semathiriyeli, amandla okuqina, ubuncinci be-zinc ubukhulu, inkqubo yechromate (umzekelo, i-ISO 4042, i-ASTM B633 Type II), kunye naluphi na unyango olufunekayo emva kokubhaka okanye ukutywinwa.

Ekugqibeleni, ukuqina akuyiyo ipropati yombala. Yipropathi yetsheyini yonke yokuvelisa-ukusuka kwi-wire mill ukuya ekubunjweni, unyango lobushushu, i-plating chemistry, kunye nokulawula inkqubo. I-pin evela kumvelisi onengqeqesho eneenkcukacha eziqinileyo ingahlala iminyaka. Iphini elifana nelo elivela kwivenkile etyebileyo lisenokungaphumeleli ehlotyeni elifumileyo. Umahluko ukwiinkcukacha ongaze uzibone de kusilela.