Yawancin lokaci, bolt head yana samuwa ta hanyar sarrafa robobi mai sanyi, idan aka kwatanta da sarrafa kayan aiki, fiber na karfe (wayar ƙarfe) tare da siffar samfurin yana ci gaba da ci gaba, ba tare da yankewa a tsakiya ba, wanda ke inganta ƙarfin samfurin, musamman ma m inji Properties.Cold heading tsari tsari ya hada da yankan da kafa, guda - danna, biyu - danna sanyi kan kai da kuma Multi - matsayi atomatik sanyi heading.An atomatik sanyi taken inji da ake amfani da stamping, upsetting, extruding da kuma rage diamita a dama forming mutu. .Simplex bit ko Multi-tashar atomatik sanyi heading inji ta yin amfani da aiki halaye na asali blank da aka yi da kayan size 5 zuwa 6 mita tsawo mashaya ko nauyi ne 1900-2000 kg na girman da waya sanda karfe waya, da aiki. fasaha shi ne halaye na sanyi heading kafa ba yanke takardar blank a gaba, amma AMFANI da atomatik sanyi kan inji kanta da mashaya da waya sanda karfe waya.Yanke da tayar da hankali (idan ya cancanta). Kafin ramin extrusion, dole ne a sake fasalin blank. Za a iya samun blank ta hanyar tsarawa. An aika zuwa tashar aiki mai tayar da hankali. Wannan tasha na iya inganta ingancin wuraren da ba komai, rage ƙarfin kafa tashar ta gaba da kashi 15-17%, da kuma tsawaita rayuwar tarkace. Daidaiton da aka samu ta hanyar yin sanyi yana da alaƙa. Zaɓin hanyar kafawa da tsarin da aka yi amfani da shi. Bugu da ƙari, shi ma ya dogara da tsarin halaye na kayan aikin da aka yi amfani da su, halayen tsari da jihar su, daidaitattun kayan aiki, rayuwa da lalacewa digiri.For high gami karfe amfani da sanyi heading da extrusion, Ƙarƙashin ƙarancin aiki na ƙarancin alloy mutu bai kamata ya zama Ra = 0.2um ba, lokacin da ƙarancin aiki na irin wannan mutuwar ya kai Ra = 0.025-0.050um, yana da matsakaicin rayuwa.
Ana sarrafa zaren kullu ne ta hanyar sanyi, ta yadda zaren babu wanda ke cikin wani diamita yana jujjuya shi ta farantin zaren (die), kuma zaren yana samuwa ne ta hanyar matsi na zaren (die). ba a yanke madaidaicin filastik na zaren dunƙulewa ba, ƙarfin yana ƙaruwa, daidaito yana da girma kuma ingancin ya dace.Domin samar da zaren waje diamita na samfurin ƙarshe, diamita da ake buƙata na zaren blank ya bambanta, saboda an iyakance shi da madaidaicin zaren, ko kayan shafa da sauran dalilai.Rolling (rolling) danna zaren hanya ce ta samar da haƙoran zaren ta hanyar lalata filastik. mirgina waya farantin) mutu, daya gefen extrude cylindrical harsashi, daya gefen don yin harsashi juyi, na karshe mirgina mutu a kan conical siffar canjawa wuri zuwa harsashi, sabõda haka, da thread forming.Rolling (rub) matsa lamba thread processing gama gari shi ne cewa yawan juyi juyi bai yi yawa ba, idan ya yi yawa, ingancin aikin ya yi ƙasa kaɗan, saman haƙoran zaren da sauƙi don haifar da rabuwa ko ɓarna al'amarin. ƙananan, diamita na zaren yana da sauƙi don rasa da'irar, mirgina matsa lamba mara kyau a farkon mataki, wanda ya haifar da raguwar mutuwa. .Idan waɗannan lahani sun faru a cikin Lambobi masu yawa, za a same su a cikin matakan sarrafawa. Idan ƙananan adadin waɗannan lahani sun faru, tsarin samarwa ba zai lura da waɗannan lahani ga mai amfani ba, yana haifar da matsala.Saboda haka, mahimman batutuwa na Ya kamata a taƙaita yanayin sarrafawa don sarrafa waɗannan mahimman abubuwan a cikin tsarin samarwa.
Ƙarfafa ƙarfin ƙarfin ƙarfi za a yi fushi da fushi bisa ga buƙatun fasaha. Manufar maganin zafi da zafin jiki shine don inganta cikakkun kayan aikin injiniya na kayan aiki don saduwa da ƙayyadadden ƙimar ƙarfin ƙarfin ƙarfi da ƙarfin lanƙwasa. ingancin ciki na maɗauran ƙarfi mai ƙarfi, musamman ingancin ciki.Sabili da haka, don samar da kayan haɓaka mai ƙarfi mai ƙarfi, dole ne a sami kayan aikin fasahar fasahar zafin zafi na ci gaba.Sakamakon babban ƙarfin samarwa da ƙarancin farashi mai ƙarfi mai ƙarfi, da ingantaccen tsari mai kyau da daidaitaccen tsari. da dunƙule zaren, da zafi magani kayan aiki da ake bukata don samun babban samar iya aiki, high digiri na aiki da kai da kuma mai kyau ingancin zafi magani.Tun daga 1990s, ci gaba da zafi magani samar line tare da m yanayi ya kasance a cikin wani rinjaye matsayi.The buga-kasa irin da net-belt makera ne musamman dace da zafi magani da kuma tempering na kananan da kuma matsakaici-sized fasteners.Tempering line banda tanderun shãfe haske yi yana da kyau, amma kuma yana da ci-gaba yanayi, zafin jiki, da kuma tsarin sigogi na sarrafa kwamfuta, ƙararrawar gazawar kayan aiki da ayyukan nuni.Maɗaukakin ƙarfi mai ƙarfi ana sarrafa ta atomatik daga ciyarwa - tsaftacewa - dumama - quenching - tsaftacewa - tempering - canza launi zuwa layin layi, yadda ya kamata yana tabbatar da ingancin maganin zafi.The decarburization na dunƙule thread zai haifar da fastener don yin tafiya da farko lokacin da ya kasa saduwa da juriya na buƙatun aikin injiniya, wanda zai sa screw fastener rasa inganci kuma ya rage rayuwar sabis.Saboda decarbonization na albarkatun kasa, idan annealing bai dace ba, zai sa albarkatun kasa decarbonization Layer zurfafa. A lokacin quenching da tempering zafi magani, wasu oxidizing gas ne usua.lly da aka kawo daga wajen tanderun. Tsatsawar igiyar karfe ko ragowar a kan waya bayan zane mai sanyi zai bazu bayan dumama a cikin tanderun, yana haifar da iskar gas. baƙin ƙarfe carbonate da hydroxide, bayan zafi za a rushe cikin CO ₂ da H ₂ O, don haka aggravating da decarburization.The sakamakon nuna cewa decarburization mataki na matsakaici carbon gami karfe ne mafi tsanani fiye da na carbon karfe, da kuma mafi sauri decarburization. zafin jiki ne tsakanin 700 da 800 digiri Celsius. Domin abin da aka makala a saman karfe waya decomposes da kuma hadawa a cikin carbon dioxide da ruwa a cikin sauri gudun karkashin wasu yanayi, idan ci gaba da raga bel tanderu gas iko bai dace ba, kuma zai haifar da kurakurai decarbonization kuskure.Lokacin da wani babban ƙarfi a kusa da sanyi kai, da albarkatun kasa da annealed decarburizing Layer ba kawai har yanzu wanzu, amma an extruded zuwa saman zaren,sakamakon rage yawan kayan aikin injiniya (musamman ƙarfi da juriya na abrasion) don farfajiyar maɗauran da ke buƙatar taurara. Bugu da ƙari, ƙaddamar da decarburization na waya na karfe, farfajiya da ƙungiyar ciki sun bambanta kuma suna da nau'in haɓakawa daban-daban, quenching na iya haifar da fashe fashe. .Saboda haka, don kare zaren a saman decarburization a zafi quenching, amma kuma ga albarkatun kasa da aka moderately mai rufi carbon decarburization na fasteners, juya da amfani da raga bel makera m yanayi a cikin asali daidai da asali carbon abun ciki. da carbon shafi sassa, riga decarburization fasteners sannu a hankali mayar da asali carbon abun ciki, carbon m aka saita a 0.42% 0.48% bu mai kyau nanotubes da quenching dumama zafin jiki, guda ba zai iya karkashin high zafin jiki, domin kauce wa m hatsi, shafi inji. Properties.Babban ingancin matsalolin fasteners a quenching da quenching tsari asake: quenching taurin bai wadatar ba, rashin taurin kai; Ƙirar lalacewa fiye da kima; Quenching cracking.Irin matsalolin da ke cikin filin sau da yawa suna da alaƙa da albarkatun ƙasa, quenching dumama da kuma kashe sanyaya.Daidaitaccen tsari na tsarin kula da zafi da kuma daidaita tsarin aikin samarwa na iya sau da yawa guje wa irin waɗannan ingantattun hatsarori.
Lokacin aikawa: Mayu-31-2019