Ukwelashwa kokushisa kwe-Fastener, ngaphezu kokuhlolwa kwekhwalithi evamile nokulawula, kukhona ukuhlolwa nokulawula okukhethekile kwekhwalithi, manje sithi ukwelashwa kokushisa kwamaphuzu amaningana okulawula.
01 I-Decarburization kanye ne-carburization
Ukuze unqume ngesikhathi esifanele isilawuli sekhabhoni yesithando somlilo, ungasebenzisa ukutholwa kwenhlansi kanye nokuhlola ubulukhuni be-Rockwell ukuze kukhishwe isidumbu kanye ne-carburization ukuze uthole ukwahlulela kokuqala.
Ukuhlolwa kwenhlansi.
Ingabe izingxenye ezicishiwe, kumshini wokugaya ovela phezulu nangaphakathi endaweni yokwahlulela egaya ngobumnene futhi inhliziyo yenani lekhabhoni iyahambisana. Kodwa lokhu kudinga ukuthi osebenza naye abe namasu anekhono nezinhlansi zokukhomba ikhono.
Ukuhlolwa kokuqina kwe-Rockwell.
Kwenziwa ohlangothini lwebhawodi ene-hexagonal. Okokuqala izingxenye eziqinile zendiza ene-hexagonal ene-sandpaper epholishwe kahle, zikala ubulukhuni bokuqala be-Rockwell. Khona-ke le surface in the sander ukuze ugaye away mayelana 0.5mm, bese ukala ukuqina Rockwell.
Uma ubulukhuni ubulukhuni izikhathi ezimbili ngokuyisisekelo efanayo, ukuthi akukho decarburization, noma carburization.
Uma ubulukhuni bangaphambili buphansi kunobulukhuni bakamuva, kusho ukuthi ingaphezulu le-decarburized.
Ubulukhuni bangaphambili buphakeme kunobulukhuni bamuva, ukuthi i-carburization ebusweni.
Ngokuvamile, umehluko wobulukhuni obubili be-5HRC noma ngaphansi, ngendlela ye-metallographic noma indlela ye-microhardness, izingxenye ze-decarburization noma i-carburization ngokuyisisekelo zingaphakathi kwendawo yokufaneleka.
02 Ubulukhuni namandla
Ekuhlolweni kwe-fastener enentambo, akukwazi ukuvele kusekelwe enanini lobulukhuni bemanuwali efanelekile, eguqulelwe ibe yinani lamandla. Kukhona into yokuqina phakathi nendawo.
Ngokuvamile, ukuqina kwezinto ezibonakalayo kuhle, ubunzima be-cross-section of the screw section bungasakazwa ngokufanayo, inqobo nje uma ubulukhuni bufanelekile, amandla nokuqinisekisa ukuthi ukucindezeleka nakho kungahlangabezana nezidingo;
Lapho ukuqina kwezinto ezibonakalayo kumpofu, nakuba ngokusho kwengxenye enqunyiwe yesheke, ubulukhuni bufanelekile, kodwa amandla nokucindezeleka kwesiqinisekiso ngokuvamile akuhlangabezani nezidingo. Ikakhulukazi lapho ubulukhuni bobuso buvame umkhawulo ophansi, ukuze kulawulwe amandla nokuqinisekisa ukucindezeleka ebangeni elifanelekayo, ngokuvamile kuvame ukuthuthukisa inani eliphansi lomkhawulo wobunzima.
03 Ukuhlolwa kokuhlehlisa
Retempering test ungabheka ubulukhuni quenching akwanele, nge lokushisa eliphansi kakhulu tempering ngokulambisa ukufinyelela ububanzi obubekiwe ubulukhuni ukusebenza okungalungile, ukuze kuqinisekiswe ukuthi olunzulu izakhiwo mechanical izingxenye.
Ikakhulukazi i-carbon martensitic steel threaded fasteners ephansi kakhulu, izinga lokushisa eliphansi lokushisa, nakuba ezinye izakhiwo zemishini zingahlangabezana nezidingo, kodwa ukukalwa kokucindezeleka okuqinisekisiwe, ukuguquguquka kwe-elongation okusele kukhulu kakhulu, kukhulu kakhulu kuno-12.5um, futhi kwezinye izimo zokusetshenziswa. kuzoba yinto yokuphuka ngokuzumayo, kwezinye izimoto kanye nokwakhiwa kwamabhawodi, kuvele kwenzeka ngokuphuka kungazelelwe.
Lapho izinga lokushisa lokushisa eliphansi kakhulu, linganciphisa le nto engenhla, kodwa nge-carbon martensitic steel yokukhiqiza amabhawodi ebangeni eli-10.9, kufanele kuqaphe ngokukhethekile.
04 Ukuhlolwa kwe-hydrogen embrittlement
Ukuba sengozini kwe-hydrogen embrittlement kuyanda ngamandla esibambiso. Izinamathiselo ezinentambo zangaphandle zebanga le-10.9 nangaphezulu, izikulufu eziqinile ezizithintayo ezingaphezulu, izikulufu ezihlanganisiwe ezinamawasha ensimbi aqinile, njll. kufanele zikhishwe i-hydrogen ngemva kokucwecwa.
Ukwelashwa kwe-Dehydrogenation kuvame ukuba kuhhavini noma esithandweni esishisayo, kubambe ku-190~230.℃isikhathi esingaphezu kwamahora angu-4, ukuze kuphume i-hydrogen.
"Insimbi isadinga ukuqina kwayo!" Noma ngabe isimo semakethe sishintsha kanjani, ukucwengwa kwenqubo yokukhiqiza nakho kungenye yezindlela ezisebenzayo zokumelana nezingozi.
Enqubweni yokwelashwa kokushisa okuqinisiwe, ngokungangabazeki kubaluleke kakhulu ukwenza umsebenzi omuhle ezindaweni zokulawula ezibalulekile, okuphinde kube enye yezinto okufanele yonke inkampani yokwelapha ukushisa kwe-fastener enhle yenze kahle.
Isikhathi sokuthumela: Jan-17-2024