Masiyinqumle loo ngxolo. Ukuba ucinga ukuba i-counterhead self-drilling screw yintloko yepani enqabileyo enencam ye-drill, sele ukwinyawo elingasemva. Umdlalo wokwenyani uphakathi kwejiyometri yentloko, uyilo lwefleyiti, kunye nesixhobo senzelwe ukugqobhoza. Ndibone iiprojekthi ezininzi kakhulu apho i-fastener yatyholwa ngokusilela, xa umba wawungowona ungafaniyo kwasekuqaleni.

I-Anatomy ye-Counterhead efanelekileyo

Akunjalo nje malunga neprofayili ephantsi. Igama elithi 'i-counterhead' liphoswa ngapha nangapha, kodwa iinkcukacha ezibalulekileyo ngumgangatho ongaphantsi kwentloko kunye nokutshintsha ukusuka entloko ukuya kwi-shank. Into eyilwe kakubi ayinakuhlala ngokupheleleyo, ishiya isithuba somhlwa, okanye 'itshone kakhulu' kwaye igxumeke imathiriyeli oyibophayo. Ndikhumbula ibhetshi evela kumthengisi-akayi kukhankanya amagama-apho i-angle yentloko yayicinywe ngamadigri ambalwa. Ephepheni, yadibana nenkcazo. Ngokwesiqhelo, kwi-steel-to-wood application, yakha i-stress fractures kwiplanga ngexesha elinye. Intloko yaqhubeka iqhuba ingakhange ifake kakuhle i-countersink.

Kulapho isiseko sokuvelisa sibalulekile. Kwiindawo ezinjengeSithili saseYongnian eHandan, uneqela leengcaphephe. Inkampani efana I-Sunnian Zitai Festener Fishaner Comment Com. ukuba kule ndawo akukho nto iyenzekayo. Iziseko ezingundoqo kunye nekhonkco lokubonelela kulo mmandla, okufuphi neendlela ezinkulu zezothutho ezinje ngeBeijing-Guangzhou Railway, kuthetha ukuba bahlala besebenza ngokuqukuqela kwemathiriyeli ekrwada kunye nengxelo yemveliso ejikelezileyo ukuba iifektri ezincinci, ezikwanti ezingenakufikelela kuzo. Iguqulela ukuhambelana kwistampu kunye neenkqubo zonyango lobushushu ezichaza umqolo wesikrufu.

I-drill point ngokwayo ngomnye umngxuma womvundla. Ukuze i-self-drilling screw isebenze, inqaku kufuneka lisike, likhuphe iitshiphusi, kwaye ke imisonto kufuneka yenze ngaphandle kwe-galling. Ndivavanye izikrufu apho inqaku lalinobundlongondlongo kakhulu kwigeyiji yentsimbi ecekethekileyo—ibiya kugqobhoza kodwa ishiye umngxuma okrazukileyo ukuba imisonto ingakwazi ukubandakanyeka ngokucocekileyo, ikhokelela kwimisonto ekhutshiweyo phantsi kokungcangcazela. Uyilo lwe-counterhead ludibanisa oku; ukuba izihlalo zentloko phambi kokuba imicu ibandakanyeke ngokupheleleyo, ufumana ingqiqo yobuxoki yokuqina. Emva kweveki, ikhululekile.

Ukudityaniswa kwezinto eziphathekayo kunye neNyaniso yoMsebenzi wasentsimini

Awunakuba nesikrufu esinye kuyo yonke into. Eyona ngcamango iphosakeleyo kukuba i-screw ye-10 counterhead self-drilling iyisilungiso sendalo yonke. Kwifreyim yentsimbi, ukusebenzisa isikrufu sentsimbi eqinisiweyo kumjelo owenziwe ngaphambili ngumgangatho. Kodwa sasineprojekthi yokubuyisela kwakhona ebandakanya iipaneli zentsimbi zeCorten ezindala. Isikrufu esikhankanyiweyo, uhlobo oluqhelekileyo lwe-zinc-plated, lombiwe isohlwayo kodwa sabanjwa embindini. Ingxaki? Umxholo ophezulu wobhedu kwi-Corten, udibene ne-coating ye-zinc, udale ukubopha okukhulu kwe-galvanic. Isisombululo yayikukutshintshela kwisikrufu ngenkqubo yokwaleka eyahlukileyo-inkcukacha ehlala ingahoywa kwi-spec yokuqala.

Apha kulapho icala lolungiselelo elivela kwindawo yomenzi, njengendawo yeZitai kufutshane neBeijing-Shenzhen Expressway kunye neNational Highway 107, ibonisa ixabiso layo. Xa ufuna i-coating ethile, engekho-standard-ukuthi, i-geopolymer-based finish for a chemical plant job-ukuba kwindawo yemveliso eshinyeneyo kuthetha ukuguquguquka kwebhetshi encinci. Bangakwazi ukufumana i-coating, baqhube umgca, kwaye bawufumane kwilori ngaphandle kwamaxesha afanayo okukhokela njengomzi-mveliso ophakathi kwendawo. Iwebhusayithi yabo, https //wwww.ziitasteners.com, kudla ngokudwelisa obu buchule, kodwa kufuneka ugrumbe udlule kwikhathalogu ukuze uqonde intsingiselo: imalunga nohlengahlengiso oluphendulayo, hayi nje uluhlu lwezinto ezininzi.

Ityala lokungaphumeleli elifanele ukukhankanywa: usebenzisa isikrufu se-counterhead esilungiselelwe isinyithi kwisihombiso somthi oqinileyo. Ingqiqo yayikukuzibhora, ngoko ke akukho mngxuma wokulingwa. Intloko ephantsi yayinqweneleka kwi-aesthetics. Izikrufu zakrazuka entanyeni ngexesha lentshukumo yeenkuni zonyaka. Sifunda ntoni? Indawo yokubhola yayingeyomfuneko kwiplanga, kwaye i-shank, elungiselelwe amandla ohlukeneyo okucheba kwintsimbi, yayimnkum kakhulu kumthwalo osecaleni kumaplanga. Sitshintshele kwisitayile se-counterhead esifanayo kodwa kwibakala elahlukileyo kunye nefom yentambo. Isebenzile.

I-Seti kunye ne-squeak

Iisetingi zeTorque kubaqhubi ziyashunyayelwa, kodwa kunqabile ukuba zilandelwe ngokuchanekileyo ngezikrufu. I-counterhead yenzelwe ukudweba izinto kunye nokumisa. Kodwa ukuba i-drill point ayisebenzi kakuhle okanye i-flute ivaliwe (eqhelekileyo kunye ne-aluminium okanye i-composites ethile), umqhubi uqhubeka ejikeleza, kwaye i-torque idlulisela entloko. Oku kunokukhupha i-cam-out kwaye kuhlube i-recess ye-drive okanye, okubi nakakhulu, ukujikelezisa isikrufu esihleliyo, ukutshabalalisa imisonto kwizinto zomzali. Ufumana isandi esincwinayo—kukungaphumeleli okwenzekayo oko. Ngoku ndiyanyanzelisa kwiphaneli yovavanyo enento eqokelelweyo yemathiriyeli ngaphambi kokuba kuqale naluphi na ufakelo olukhulu. Yiyo kuphela indlela yokulinganisa umqhubi kwaye uqinisekise ukhetho lwe-screw.

Ngamanye amaxesha, ukulungiswa kuyaphikisana. Kufakelo olude lwefascia enezikrufu ezihambelana nombala, sasifumana izihlalo ezingahambelaniyo. Iintloko zazizidla okanye zazitshona nzulu kakhulu. Emva kokulawula imiba yomqhubi, sijonge izikrufu ngokwazo. Umbala we-anodized, ngelixa ulungele ukuxhathisa umhlwa, wawudala ukungqubana okungahambelaniyo phantsi kwentloko. Isithambisi esincinci kubuso bewasha-intambo yeenyosi, yazo zonke izinto-yayilungelelanisa indawo yokuhlala. Incinci, inkcukacha ezincinci ezingekho kuyo nayiphi na incwadi.

Ngaphaya kwePhepha eliKhethekileyo: Ukufumana kunye nokungaguquguquki

Ikhathalogu evela kumenzi omkhulu okanye indawo efana neZitai iya kukunika iipropati zoomatshini kunye nemilinganiselo. Into ehlala ingakuxeleli yona kukungaguquguquki kweqashiso-kwiqashiso kwimeko yobunzulu bokuqina okanye ukuchaneka kokuqengqeleka komsonto. Kusetyenziso olubalulekileyo lwesakhiwo, njengakulwakhiwo lweemodyuli, le yinto yonke. Ndiqalile ukucela isiqinisekiso somthombo wekhoyili wezinto ezikrwada kunye nomgangatho wabo wokuhlola umgangatho wokwenziwa kwentloko. Inkampani emiliselwe kwisiseko esikhulu semveliso esinje ngeSithili saseYongnian siqhele ukusethelwa olu hlobo lokulandeleka kuba isebenzela abathengi abayifunayo kwiimarike ezithumela ngaphandle.

Ikwamalunga namalungu ancedisayo. Isikrufu se-counterhead sihlala siza kunye newasha ye-EPDM. Umgangatho waloo washer ubaluleke kakhulu njengesikrufu. Ixabiso eliphantsi liya kuthomalalisa ekuvezweni kwe-UV, liphulukane ne-elasticity, kwaye libeke esichengeni itywina ixesha elide ngaphambi kokuba isibophelelo sisilele. Xa ndivavanya umboneleli, ngoku ndicela ukubona iinkcukacha zomthombo wewasha. Yindlela yenkqubo.

Ingcamango yokugqibela: indaleko ayiyeki. Sibona izicelo ezininzi zendibaniselwano-njenge-counterhead enendawo yobhola exutyiweyo enokuphatha i-steel sheeting exhaswa yi-thermal insulation board. Ityhala uyilo. Iifektri ezikwaziyo ukuphindaphinda ngokukhawuleza, ngokufuthi ezo zinobonelelo olomeleleyo lwendawo kunye namaqela obunjineli, zizo ezisombulula ezi ngxaki. Kuncinci malunga nokuyila isikrufu esitsha kunye nokunye malunga nokucofa ii-engile, inkqubo yobushushu, kunye neengubo ezichanekileyo. Obo bubuchule bokwenyani, kwaye yiyo eyahlula isiqhoboshi sempahla kwisisombululo.