Manufar maganin vulcanization:
Lokacin da vulcanization aka yi amfani da matsayin anti-gogayya abu a foda karafa kayayyakin, baƙin ƙarfe-tushen man-bare bearings ne mafi yadu amfani.Sintered man-impregnated bearings (tare da graphite abun ciki na 1% -4%) da sauki masana'antu tsari da kuma low cost.A cikin yanayin PV <18-25 kg · m/cm 2 · sec, zai iya maye gurbin tagulla, babbitt gami da sauran kayan hana gogayya.Koyaya, a ƙarƙashin yanayin aiki mai nauyi, kamar babban saurin zamewa akan farfajiyar juzu'i da babban nauyin naúrar, juriyar lalacewa da rayuwar sassan da aka lalata za su ragu da sauri.Don haɓaka aikin hana gogayya na sassa na tushen ƙarfe na ƙarfe mai ƙarfi, rage ƙimar juzu'i, da haɓaka zafin aiki don faɗaɗa kewayon amfani da shi, vulcanization magani hanya ce da ta cancanci haɓakawa.
Sulfur da mafi yawan sulfide suna da wasu kaddarorin mai.Iron sulfide yana da kyau mai kyau mai kyau, musamman ma a ƙarƙashin bushewar yanayi, kasancewar sulfide na baƙin ƙarfe yana da juriya mai kyau.
Foda karafa na tushen kayayyakin ƙarfe, ta yin amfani da capillary pores za a iya impregnated da wani babba adadin sulfur.Bayan dumama, sulfur da baƙin ƙarfe a saman pores na iya haifar da sulfide na baƙin ƙarfe, wanda aka rarraba a ko'ina cikin samfurin kuma yana taka leda mai kyau a kan juzu'i kuma zai iya inganta aikin yankewa.Bayan vulcanization, gogayya da yanke saman samfuran suna da santsi sosai.
Bayan da baƙin ƙarfe mai bakin ciki ya ɓarna, babban aikin da ya fi dacewa shi ne samun kyawawan halayen jujjuyawar bushewa.Abu ne mai gamsarwa mai gamsarwa a ƙarƙashin yanayin aikin da ba shi da mai (wato, ba a yarda da mai ko mai ba), kuma yana da juriya mai kyau kuma yana rage yanayin cizon matsi.Bugu da ƙari, halayen juzu'i na wannan kayan sun bambanta da na gabaɗaya kayan haɓakawa.Gabaɗaya, yayin da ƙayyadaddun matsin lamba ke ƙaruwa, ƙimar juzu'i ba ta canzawa da yawa.Lokacin da takamaiman matsa lamba ya wuce ƙima, ƙimar juzu'i yana ƙaruwa sosai.Koyaya, ƙimar juzu'i na baƙin ƙarfe mai ɓarna bayan vulcanization magani yana raguwa tare da haɓaka takamaiman matsa lamba a cikin kewayon matsi na musamman.Wannan siffa ce mai kima ta kayan hana gogayya.
Ƙarfin da aka yi da baƙin ƙarfe wanda ke da ciki mai ciki bayan vulcanization na iya aiki a hankali ƙasa da 250 ° C.
Tsarin vulcanization:
Tsarin maganin vulcanization yana da sauƙi mai sauƙi kuma baya buƙatar kayan aiki na musamman.Tsarin shi ne kamar haka: sanya sulfur a cikin ƙugiya kuma zafi shi don narkewa.Lokacin da yawan zafin jiki da aka sarrafa a 120-130 ℃, da fluidity na sulfur ne mafi alhẽri a wannan lokaci.Idan yawan zafin jiki ya yi yawa, ba zai iya haifar da impregnation ba.Samfurin da aka yi da shi da za a yi ciki yana preheated zuwa 100-150 ° C, sa'an nan kuma an nutsar da samfurin a cikin narkakken sulfur bayani na minti 3-20, kuma samfurin da ba a gama ba yana nutsewa na minti 25-30.Dangane da girman samfurin, kaurin bango da adadin nutsewa da ake buƙata don ƙayyade lokacin nutsewa.Lokacin nutsewa don ƙarancin ƙima da kaurin bangon bakin ciki ya ragu;akasin haka.Bayan leaching, ana fitar da samfurin, kuma sauran sulfur an zubar.A ƙarshe, sanya samfurin da aka yi ciki a cikin tanderun, a kare shi da hydrogen ko gawayi, kuma a zafi shi zuwa 700-720 ° C na 0.5 zuwa 1 hour.A wannan lokacin, sulfur ɗin da aka nutsar yana amsawa da ƙarfe don samar da ƙarfe sulfide.Don samfuran da ke da nauyin 6 zuwa 6.2 g/cm3, abun cikin sulfur yana da kusan 35 zuwa 4% (kashi na nauyi).Dumama da gasawa shine sanya sulfur da aka nutsar a cikin ramukan sashin ya zama ƙarfe sulfide.
Samfurin da aka lalata bayan vulcanization ana iya bi da shi tare da nutsar da mai da ƙarewa.
Misalai na aikace-aikacen maganin vulcanization:
1. Hannun hannu na niƙa na fulawa An shigar da hannayen hannu a duka ƙarshen juzu'i biyu, jimlar saiti huɗu.Matsakaicin mirgine shine 280 kg, kuma gudun shine 700-1000 rpm (P = 10 kg / cm2, V = 2 m / s).Asalin dazuzzuka na tagulla an mai da su da maƙiyin mai.Yanzu an maye gurbin shi da baƙin ƙarfe mai ƙyalƙyali tare da yawa na 5.8 g/cm3 da S abun ciki na 6.8%.Ana iya amfani da na'urar lubrication na asali maimakon na'urar lubrication na asali.Kawai sauke ɗigon mai kafin tuƙi kuma kuyi aiki akai-akai na awa 40.Matsakaicin zafin jiki shine kawai 40 ° C.;Ana nika kilogiram 12,000 na gari, daji yana ci gaba da yin aiki akai-akai.
2. Rikicin mazugi shine kayan aiki mai mahimmanci don hako mai.Akwai hannun riga mai zamewa a saman man haƙora, wanda ke ƙarƙashin matsin lamba (matsi P=500 kgf/cm2, saurin V = 0.15m/sec.), kuma akwai girgiza mai ƙarfi da girgiza.
Lokacin aikawa: Yuli-12-2021