Ibhawodi yehange enezinhlamvu ezi-7, enezinhlamvu ezingu-9 emise okuka-L (isikulufu sehange esishumekiwe sesizwe samaShayina se-GB/T799-1988)

1. Ukusetshenziswa komkhiqizo namazinga wokwenza

Lo mkhiqizo ukhiqizwa ngokuhambisana ngokuqinile ne-Chinese standard standard GB/T799-1988. Iyibhowodi yehange eshumekwe ngaphambili enezinhlamvu ezingu-7 ezimise okuka-L kanye nezinhlamvu ezingu-9. Kuyi-fastener ekhethekile yezindawo zokusebenzela zesakhiwo sensimbi, izisekelo ze-tower crane, izigxobo zokukhanya zasemgwaqweni, imibhoshongo yensimbi enamandla amakhulu, izisekelo zemishini yebhuloho, nengqalasizinda yemishini emikhulu yobunjiniyela. Imikhiqizo isithunyelwe ezimakethe zengqalasizinda zaphesheya ezifana ne-Middle East, i-Southeast Asia, kanye ne-Afrika isikhathi eside. Zifakwe kukhonkolo ngesikhathi sokwakhiwa kokuthululwa kwabantu futhi zidlala indima ebalulekile ekulungiseni indikimba eyinhloko yemishini, ukuthwala umthwalo ophelele, nokumelana nokuhlaliswa kwesisekelo nokufuduka. Ziyizesekeli ezibalulekile ezishumekiwe zamaphrojekthi wobunjiniyela bomphakathi.

2. Ukukhetha impahla eluhlaza kanye nenqubo yokukhiqiza

Izinto zokusetshenziswa yi-Q235, 35cr, 45#, kanye nensimbi eyindilinga engu-40cr ephezulu. Inqubo yokukhiqiza yilena: ukuvala nokusikwa kwensimbi eyindilinga → ukugoba okunezinga lokushisa eliphezulu nokwenza amahhuku anezinhlamvu ezingu-7 kanye nezinhlamvu ezingu-9 ekugcineni → ukugoqa intambo ngokunemba ngakolunye uhlangothi → ukwelapha okuqeda ukugqwala. Ihhuku iyakhiwa futhi igotshwe ibe yisiqephu esisodwa, ngaphandle kokuqhekeka noma okunesici ekugobeni. Ngemva kokufakwa kukhonkolo, ingwegwe ihlanganiswe ngokuqinile nosimende, inikeze amandla aqinile okubambelela. Intambo isebenzisa ubuchwepheshe bokugoqa obunembayo, obunomumo wamazinyo ojwayelekile, futhi isebenzisana eduze namantongomane afanayo, okwenza kube nzima ukuthi intambo ishelele lapho ikhiyiwe ngesikhathi sokufakwa.

3. Ukukhethwa kwendawo kanye nezinzuzo zomkhiqizo

Okuvamile esitokweni kuwubufakazi bokugqwala kwe-oxide emnyama, eyongayo, futhi ihlangabezana nezidingo ezishunyekiwe zamafekthri angaphakathi; i-hot-dip zinc plated kanye nezinqubo zokulwa nokugqwala kwe-zinc zingenziwa ngokwezifiso uma kudingeka. Inguqulo ye-hot-dip galvanized ine-zinc layer ewugqinsi futhi imelana nesifutho sikasawoti kanye ne-asidi yangaphandle nokugqwala kwe-alkali, futhi ifanele indawo enzima njengolwandle, izitshalo zamandla omoya ezivulekile, namabhuloho. Isakhiwo se-hook esimise okwe-L sihlukile kumabhawodi aqondile. Ithembele kuhuku ukwandisa indawo yokulunywa ukhonkolo, inokumelana okuhle kakhulu kokukhipha, futhi igwema ngokuphumelelayo ingozi yokuxega esikhathini esizayo. Imidwebo ecacisiwe, ubude bokugoba, nobude besigaba sentambo kungashintshwa ngokuya ngemidwebo yokwakhiwa kwekhasimende engajwayelekile.

4. Ukulethwa kokuhlolwa kwekhwalithi kanye nezinsizakalo ezisekelayo

Ukucaciswa okujwayelekile kwe-M12~M48 kuhlala kusesitokweni, osayizi abafushane bathunyelwa esitokweni phakathi namahora angama-48, futhi amamodeli enziwe ngokwezifiso esikhathi eside akhiqizwa ngokuya ngeshejuli yokwakha. Idayamitha yesikulufu, ukunemba kwentambo, nobukhulu bokugoba kuqinisekiswa ngaphambi kokuphuma embonini ukuze kuqedwe ukuchezuka kwe-dimensional nemikhiqizo enesici enochungechunge olungaphelele. Inganikeza ukusekelwa okukodwa kwamantongomane azikhiqizela wona embonini, amawasha ayisicaba, namawasha asentwasahlobo, futhi lonke iphakethe liyapakishwa futhi lithunyelwe, konga amakhasimende inkinga yokuthenga ngokuhlukana; isekela amabhawodi okusetshenzwa amise okwesipesheli enziwe ngokwezifiso ngokwemidwebo, futhi ithembele kumthamo omkhulu wokukhiqiza ukuze kutholwe ngokuzinzile ama-oda okuthekelisa anesitsha esigcwele. Ingumkhiqizo okhethwayo wokuthengwa kwengqalasizinda yaphesheya kwezilwandle okushunyekiwe ngaphambilini.