Ukuqina komsonto we-zinc-plated cross countersunk drill? 

Ubona esi sihloko sivela kwiphepha elithile okanye umbuzo, kwaye ngoko nangoko, kukho ukwahlukana. Abanye abantu abathengayo babona nje i-zinc-plated kwaye bacinga ukukhuselwa komhlwa, umsebenzi owenziwe. Abanye, abo bebekumgangatho wefektri okanye bafowunelwa ngo-2 AM malunga nokusilela kwesixhobo, bayazi ukuba elo binzana lingumngxuma womvundla. Ukuqina ayisiyobhokisi yokukhangela enye. Likhonkco, kunye nelona khonkco libuthathaka-linokuba lilo umbala umaleko, i Intambo yokuqhuba ifom, okanye inkqubo yokucwenga ngokwayo-iya kuchaza yonke intsebenzo. Ndibone abaninzi kakhulu becinga isikrufu esihle sentloko eluhlaza okwesibhakabhaka okanye etyheli nge yatshona Intloko yomelele ngokwaneleyo kwintsimbi yangaphandle ngenxa nje yokuba ipleyitiwe. Kulapho iintloko ziqala khona.

Inkohliso yoMaleko oMbala

Masiqale ngombala. Uguqulo lwechromate ngaphezulu kwe-zinc plating ekunika ezo tyheli, ezibhlowu, ezimnyama, okanye zomnquma. Asiyonkangeleko nje; Kumelwe ukuba yongeze umaleko wokwenziwa, okonyusa ukuxhathisa komhlwa. Kodwa nantsi into yokubambisa ngokuziqhelanisa: ingqibelelo yalo mgangatho yiyo yonke into. Ichromate esetyenziswa kakubi ngaphezulu kwe-zinc inokuba yindawo yokusilela. Ndikhumbula ibhetshi emnyama i-zinc-plated self-drillers esetyenziswa kwicanopy yentsimbi. Umbala wawufana, ukhangeleka kakuhle ngaphandle kwebhokisi. Kwiinyanga ezintandathu, umoya oselunxwemeni, yaye sabona umhlwa obomvu wasekuhlaleni usopha ngaphantsi kweentloko. Ingxaki? Umaleko wechromate wawungqindilili kakhulu kwaye umnatha ukusuka kwibhafu egxile kakhulu. Xa isikrufu saqhutyelwa ekhaya ngaloo nto cross countersunk intloko yokuhlala, isambatho kwiindawo eziphezulu zoxinzelelo lwe-micro-cracked. Ukufuma kwangena, kwangena ngaphantsi kwengubo, kwaye yahlasela i-zinc engaphantsi. Isenzo sombingelelo we-zinc saphazamiseka ngenxa yokuba umqobo wesithintelo awuphumelelanga kuqala. Ngoko umbala wanikela imvakalelo yobuxoki yokhuseleko. Yayingeyiyo i-zinc engazange iphumelele ekuqaleni; ibiyibhatyi yayo enemibala.

Oku kubopha ngokuthe ngqo kulawulo lwenkqubo yokucwenga. Indawo efana ne-Handan Zitai Fastener Manufacturing Co., Ltd. ngaphandle eYongnian, eyona ntliziyo yemveliso yaseTshayina, baya kukwazi ebuthongweni babo. Indawo yabo kweso siseko sikhulu semizi-mveliso kuthetha ukuba babone zonke iimvume zokusilela kunye nempumelelo. Ukulungelwa kolungiselelo lwabo kufutshane neendlela ezinkulu zezothutho kubonisa umthamo, kunye nabadlali bevolumu banokusika iikona okanye ukuhambelana okubalaseleyo. Abalungileyo balawula ukungaguquguquki. Udinga umgca wokucwenga olawula ikhemistri yokuhlambela, ubushushu, kunye nexesha lokuntywiliselwa ukuze ufumane umaleko wechromate oncamathelayo kunye ne-ductile ngokwaneleyo ukuze usinde ekufakeni ukufakela. Yinkcukacha, kodwa yinkcukacha.

Kwaye malunga nokukhetha kombala-akukona nje ubuhle. Kwamanye amashishini, ibhlowu ingabonisa ibakala elithile okanye ukuthambisa. Kodwa ngenxa yokuqina, i-chromate chemistry iyahluka. Ichromate etyheli (iridescent) inika ezona yure zininzi zokutshiza ityuwa, mhlawumbi 96+ ngosuku oluhle. Okuluhlaza okwesibhakabhaka okanye kumnyama kunokuba ngaphantsi. Ngoko ukucacisa umbala akuncedi. Kufuneka uchaze uhlobo lwechromate kunye neeyure zovavanyo olulindelekileyo lokutshiza ngetyuwa. Ukuba umntu ucela nje i-zinc-plated enemibala, bayishiya ivulekile ukuze umthengisi amnike eyona ndlela inexabiso eliphantsi, ehlala ilolona xesha lincinci.

Umsonto weDrill: Apho ithiyori idibana neNyaniso

Ngoku, Intambo yokuqhuba inxalenye. Esi sisiphelo soshishino. I-self-drilling screw ene-a yatshona intloko. Ukomelela apha akukho malunga nomhlwa nje; imalunga nokusebenza koomatshini ekuhambeni kwexesha. Isenzo sokwenza umsonto kudala uxinzelelo olukhulu lwasekuhlaleni kunye nobushushu. I-zinc plating, kunye nechromate phezulu, iyachetywa kwaye iqatywe ngeli xesha. Ukuba i-plating ithambile kakhulu okanye ingqindilili kakhulu, inokuba nenyongo, inyuse i-torque ye-drive kwaye ikwazi ukuhluba ifom yentambo kwizinto zomzali. Ukuba incinci kakhulu, isiseko sentsimbi sibonakaliswe ngokukhawuleza kwiintambo zentambo.

Oku ndakufunda kabuhlungu kumsebenzi wokugquma. Sasisebenzisa umgangatho i-zinc-plated drill screw for 2mm steel sheets. Ikhulu lokuqala langena kakuhle. Emva koko, saqala ukufumana i-torque ephezulu yokuhlala kunye nokujikeleza kwentloko ngamaxesha athile. Ingxaki? I-plating build-up kwingcambu yomsonto yayingahambelani. Ezinye izikrufu zazinokwaleka okugqithisileyo apho, ziguqula iteyiphu yomsonto esebenzayo kwaye zibangela ukubopha. Ukuqina kokuzibandakanya komsonto kwaba semngciphekweni phambi kokuba isikrufu sibone imvula yaso yokuqala. Yayingengokusilela komhlwa; ibikukusilela kofakelo okubangelwa yiplating.

Ijometri yendawo yokubhola kunye noyilo lwentambo lubalulekile. Indawo yokubhola ebukhali, eqiniswe kakuhle iya kungena ngokucocekileyo, inciphise ukuguqulwa kwezinto ezijikelezileyo kwaye ngaloo ndlela igcine ingqibelelo yomaleko ocwecwe kwimisonto yesikrufu. Inqaku elibuthuntu liya kusebenza-lukhuni ishidi lentsimbi, ukwenza umsonto ube nzima kwaye uqhawule i-plating kwi-screw. Ushiywe ngesikrufu esinemisonto eyintsimbi engenanto, ehleli kumngxunya oxineneyo. Ukonakala kuqala apho, kolu jongano lufihliweyo, kwakudala ngaphambi kokuba ubone nantoni na ephezu komhlaba. Ke, ukuqina komsonto wokubhola ngumsebenzi wesinyithi se-screw, unyango lobushushu, uyilo lwamanqaku, kunye nokukwazi ukucwenga ukusinda kwi-abrasion yofakelo.

INtloko ye-Countersunk: Isigxininisi soxinzelelo

I yatshona uyilo lwentloko luhlala lungahoywa kwiintetho zokuqina. Abantu bagxila kumsonto. Kodwa loo ntloko i-conical, xa ihleli phantsi, iphantsi komthwalo onzima wokubamba kunye noxinzelelo. Ukutshintsha ukusuka entloko ukuya kwi-shank yindawo ebalulekileyo yoxinzelelo. Nayiphi na i-hydrogen embrittlement esuka kwinkqubo yokucwenga (umngcipheko oqhelekileyo nge-zinc electroplated) iya kubonakala apha njengokulibaziseka kokuqhekeka. Ndibone izikrufu zihlutha entloko ngexesha lofakelo okanye, ngakumbi, kwiintsuku ezimbalwa emva koko, ngenxa yoku.

Ukubhaka okufanelekileyo kwi-hydrogen embrittlement relief ayinakuxoxisana kumabanga aphezulu (afana nalawo asetyenziselwa ukuzimbela). Ayizizo zonke iipleyiti eziyenzayo, okanye ziyenze ngokwaneleyo. Inkampani enegama lokuxhasa, esebenza kwisikali ukusuka kwisiseko esikhulu njengale I-Zitai isantya isebenza ukusuka, kuya kubhakwa oku kwinkqubo yabo (ipun ecetyiweyo) kwizicelo ezibalulekileyo. Iprofayile yenkampani yabo ekhankanya owona mgangatho mkhulu wesiseko semveliso ayiyongxaki nje; kuthetha ukufikelela kwiziseko zoncedo ezikhethekileyo zonyango lwasemva kokufakwa kwesitya apho ivenkile encinci inokutsiba.

Ngapha koko, ukuhlaliswa kwentloko ye-countersunk kungonakalisa umaleko wechromate. Ukuba i-mating surface kwi-sheet metal ine-burrs okanye ayiphelelanga ngokugqibeleleyo, iintloko zentloko ngexesha lokuqiniswa kokugqibela, ukukrazula i-coating yokukhusela. Oku kudala indawo egqibeleleyo ye-anode-cathode yokonakala kwegalvanic. Udla ngokubona isangqa sokuqala somhlwa sijikeleze umjikelezo wentloko. Ukusebenzisa i-washer phantsi kwentloko kunokunceda, kodwa itshintsha ukuyila. Umbuzo wokomelela kufuneka uqwalasele ujongano phakathi kwentloko ecandiweyo kunye nezinto eziqhutywa kuyo.

Umdaniso wokusiNgqongileyo kunye neeNdlela zoKungaphumeleli zokwenyani zehlabathi

Ukuqina akunantsingiselo ngaphandle kokusingqongileyo. Ngaphakathi, yomile? Phantse nayiphi na I-chinc-ipinc-ipeyintiwe i-fastener iya kuhlala amashumi eminyaka. Kodwa yongeza umswakama, i-chlorides (i-coastal or de-icing salts), okanye iikhemikhali zoshishino, kwaye ibali liyatshintsha. Imowudi yokungaphumeleli kweklasikhi kwezi zicelo zangaphandle yi-corrosion emhlophe-i-zinc oxide kunye ne-hydroxide-ephuma kwizithuba, ilandelwa yi-rust ebomvu. Umsonto wokugrumba, ufakwe ngaphakathi, uhlala ugqwala ekugqibeleni kuba ubekwe wodwa. Uhlaselo lokuqala ludla ngokuba kwi-shank evulekileyo okanye phantsi kwentloko apho amachibi okudibanisa.

Siye savavanya ibhetshi yeprojekthi yefacade enomoya. Isikrufu esifanayo, iichromates ezintathu ezahlukeneyo: blue, black, yellow. Emva konyaka kwindawo yasezidolophini, eziluhlaza zabonisa umhlwa obalulekileyo entloko. Ezimnyama zazinomhlwa onamabala obomvu. Ezo zityheli bezilungile, zibuthuntu nje. I Intambo yokuqhuba amacandelo, xa ecatshulwa, abalisa elinye ibali. Eziluhlaza okwesibhakabhaka nezimnyama zazinomhlwa omkhulu apho umsonto wawuvela ngasemva weshiti (icala elimanzi). Abamthubi babonise ilahleko encinci ye-zinc kuphela. Umgangatho wechromate yayingumahluli.

Kulapho umnqamlezo kwisihloko sakho ungangena khona-uhlobo lokuqhuba (Phillips, Pozi, njl.). Intwana yomqhubi egugileyo okanye engahambelaniyo inokuphuma, yonakalise ikhefu lokuqhuba. I-recess eyonakalisiweyo ibeka i-installability, enokuthi iholele kwiindawo zokuhlala ezingafanelekanga (ezichaphazela ukutywinwa kwe-corrosion) okanye isidingo sokususa / ukubuyisela i-fastener, eyonakalisa i-plateed layer. Ngoko ke, ukuqina kofakelo ngokwalo, okuchaphazela ukuqina kwexesha elide, kuboshwe kweso sixhobo sokuqhuba. Yonke idibene.

I-Snthesis kunye ne-Pragmatic Specification

Ngoko, buyela kumbuzo wokuqala. Ukuqina kwe-a I-chinc-idwebile ye-chinc yipropathi yeenkqubo. Awukwazi ukwahlula inxalenye enye. Indawo entle yokugrumba ithotywa yikhromati ebrittle. Ichromate egqibeleleyo yehliswa yi-shank ene-hydrogen-embrittled. Inkulu yonke into iyehliswa ngokusetyenziswa kwindawo engalunganga.

Xa ucacisa okanye uthenga, kufuneka uqhube phantsi (kwakhona, i-pun ijoliswe). Musa nje ukuthetha i-zinc-plated. Cacisa ubukhulu beplating (umzekelo, 8-12μm), uhlobo lwechromate (umzekelo, hexavalent yellow, trivalent blue, black), kunye nesiphumo esifunekayo sovavanyo lwesitshizi setyuwa ukuya kumgangatho ofana ne-ASTM B117. Cacisa ibakala lezinto ezisisiseko (umzekelo, i-1022 yentsimbi) kunye nobunzima bendawo yokubhobhoza. Khankanya i-hydrogen embrittlement yokubhaka yokubhaka ukuba inqanaba eliphezulu lamandla. Qwalasela indawo yesicelo kwaye mhlawumbi ude unyuke uye kuthi ga kwingubo eyomelele ngakumbi njengokutyabeka koomatshini okanye ifilimu ebhityileyo yokugquma phezu kwe-zinc ukuba iyafuneka.

Iindawo ezihlala kwaye ziphefumla iziqhoboshi, njengamaqela emizi-mveliso e-Hebei ejikeleze iinkampani ezinjengeZitai, ziyawaqonda la ma-nuances kuba abathengi babo baphosa zonke izicelo ezinokwenzeka kubo. Ukusondela kwabo kunxibelelwano olukhulu lwezothutho kuthetha ukuba bathumela ngenqanawa kwiindawo ezahlukeneyo zemozulu nakumashishini, nto leyo enyanzelisa isiseko solwazi esisebenzayo, sokusombulula iingxaki. Impendulo yokuqina, ekugqibeleni, ayikho kwiphepha ledatha. Kukumava aqokelelweyo, ngamanye amaxesha abuhlungu, oko kusilelayo, nini, kwaye kutheni. Kwaye into ethathwayo yile: phatha lonke ixesha kwisihloko eside njengotshintsho olufuna ukuchazwa, hayi njengesiqinisekiso.