Yawancin lokaci, bolt head yana samuwa ne ta hanyar sarrafa filastik 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, sau biyu - danna sanyi taken da 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 an yi sama 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 kan kafa ba da yanke takardar blank a gaba, amma AMFANI da atomatik sanyi kan inji kanta da mashaya da waya sanda karfe waya yanke da upsetting da blank (idan ya cancanta) .Kafin extrusion rami, da blank dole ne. Za'a iya sake fasalin blank ɗin ta hanyar siffatawa.Babu blank ɗin baya buƙatar siffa kafin ya tayar da hankali, rage diamita da dannawa.Bayan an yanke blank ɗin, a tura shi zuwa tashar aiki mai tayar da hankali.Wannan tashar na iya inganta ingancin babur, ragewa. Ƙaddamar da ƙarfin tashar ta gaba da kashi 15-17%, da kuma tsawaita rayuwar mold. Daidaitaccen da aka samu ta hanyar yin sanyi yana da alaƙa da zaɓin hanyar kafa da tsarin da ake amfani da shi. Bugu da ƙari, shi ma ya dogara da tsarin halaye na kayan aiki da aka yi amfani da, tsari halaye da kuma jihar, kayan aiki daidaici, rayuwa da kuma lalacewa degree.For high gami karfe amfani da sanyi kan kai da extrusion, da aiki surface roughness na wuya gami mutu kada ya zama Ra = 0.2um, a lokacin da Rashin aiki na irin wannan mutuwa 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 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 don extrude cylindrical harsashi, daya gefen don yin harsashi juyi, na karshe mirgina mutu a kan conical siffar canjawa wuri zuwa harsashi, sabõda haka, da zaren forming.Rolling (rub) matsa lamba thread sarrafa na kowa batu. shi ne cewa yawan juyi juyi bai yi yawa ba, idan ya yi yawa, ingancin aiki ya yi ƙasa, saman haƙoran zaren da sauƙi don haifar da rarrabuwa ko rikicewar rikice-rikice. Sabanin haka, idan adadin juyin ya yi ƙanƙanta, zaren Diamita yana da sauƙi don rasa da'irar, mirgina matsa lamba mara kyau a farkon mataki, yana haifar da raguwar rayuwa. Lalacewar zaren naɗawa na yau da kullun: wasu fashewar saman ko karce akan zaren; Rashin tsari; Zaren ya fita daga zagaye.Idan waɗannan lahani yana faruwa 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 cewa waɗannan lahani za su gudana zuwa ga mai amfani ba, haifar da matsala.Saboda haka, mahimman al'amurra na yanayin sarrafawa ya kamata. a taƙaice 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 lankwasa. ingancin ciki na maɗauran ƙarfi mai ƙarfi, musamman ingancin ciki. Saboda haka, don samar da high quality-high-ƙarfi fasteners, shi wajibi ne don samun ci-gaba zafi magani kayan aikin.Saboda da babban samar iya aiki da kuma low farashin high-ƙarfi kusoshi, kazalika da in mun gwada da kyau da kuma daidai tsarin. da dunƙule zaren, da zafi magani kayan aiki da ake bukata don samun babban samar iya aiki, babban mataki 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 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 cika 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.Lokacin da quenching da tempering zafi magani, wasu oxidizing iskar gas yawanci kawo daga waje da makera.The tsatsa na mashaya karfe waya ko saura a kan waya waya bayan sanyi zane zai bazu bayan dumama a cikin tanderun. , samar da wasu oxidizing gas. Karfe waya surface tsatsa, alal misali, an yi shi da baƙin ƙarfe carbonate da hydroxide, bayan zafi za a rushe zuwa CO ₂ da H ₂ O, don haka aggravating da decarburization.The results nuna cewa decarburization digiri. na matsakaicin carbon alloy karfe ya fi tsanani fiye da na carbon karfe, kuma mafi sauri decarburization zafin jiki ne tsakanin 700 da 800 digiri Celsius. Domin abin da aka makala a kan saman karfe waya bazuwa da kuma hadawa a cikin carbon dioxide da ruwa a cikin sauri sauri a karkashin wasu. yanayi, idan ci gaba da raga bel makera gas iko bai dace ba, kuma zai haifar da dunƙule decarbonization kuskure.Lokacin da wani high-ƙarfi aron kusa sanyi shugaban, da albarkatun kasa da kuma annealed decarburizing Layer ba kawai har yanzu wanzu, amma an extruded zuwa ga saman da zaren, sakamakon rage inji Properties (musamman ƙarfi da abrasion juriya) ga surface na fasteners cewa bukatar da za a taurare. Bugu da kari, da surface decarburization na karfe waya, surface da kuma ciki kungiyar ne daban-daban da kuma daban-daban fadada coefficient, quenching iya samar da surface fasa.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 tanderu m yanayi a cikin asali daidai daidai. zuwa asali carbon abun ciki da carbon shafi sassa, riga decarburization fasteners sannu a hankali mayar da asali carbon abun ciki, carbon m an 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. Babban matsalolin ingancin kayan ɗamara a cikin quenching da quenching tsari sune: quenching taurin bai isa ba; Taurin rashin daidaituwa; Ƙarƙashin lalacewa mai lalacewa; Quenching cracking.Irin matsalolin da ke cikin filin sau da yawa suna da alaka da albarkatun kasa, kashe dumama. da quenching sanyaya. Daidaitaccen tsari na tsarin kula da zafi da kuma daidaita tsarin aikin samarwa na iya sau da yawa kauce wa irin waɗannan haɗari masu inganci.
Lokacin aikawa: Mayu-31-2019