A yau, zan kai ku Donghuan Malleable Iron Casting Co., Ltd. Bari mu koyi yadda ake yin simintin gyare-gyare na yashi mai rufi.
I. Ilimi da fahimtar yashi mai rufi
1. Siffofin yashi mai rufi
Yana da ƙarfin ƙarfin da ya dace; mai kyau ruwa, da shirye-shiryen yashi molds da yashi cores da bayyana contours da m Tsarin, wanda zai iya samar da hadaddun yashi tsakiya; Yashi molds (cores) da kyau surface quality, da kuma surface roughness iya isa Ra = 6.3 ~ 12.5μm , The girma daidaito iya isa CT7～CT9 matakin; haɗuwa yana da kyau, kuma simintin gyaran yana da sauƙin tsaftacewa.
2. Iyakar aikace-aikace
Ana iya amfani da yashi mai rufi don yin gyare-gyare da yashi. Ana iya amfani da ƙira ko ƙananan yashi mai rufi tare da juna ko tare da wasu nau'in yashi (cores); ba za a iya amfani da shi kawai don yin simintin nauyi na ƙarfe ko simintin ƙarancin matsa lamba ba, amma kuma Ana iya amfani da shi don simintin ƙarfe mai yashi da simintin centrifugal na thermal; ana iya amfani dashi ba kawai don samar da simintin simintin gyare-gyare da simintin ƙarfe ba, har ma don samar da simintin ƙarfe.
II. Shiri na yashi mai rufi
1. Haɗin yashi mai rufi
Gabaɗaya an haɗa shi da kayan refractory, masu ɗaure, masu warkarwa, man shafawa da ƙari na musamman.
2. Tsarin samar da yashi mai rufi
Tsarin shirye-shiryen yashi mai rufi ya haɗa da suturar sanyi, rufin dumi, da murfin thermal. A halin yanzu, kusan dukkanin samar da yashi mai rufi yana ɗaukar hanyar suturar zafi.
3. Babban samfurin nau'in yashi mai rufi
(1) Yashi mai rufi na yau da kullun shine yashi mai rufi na gargajiya
(2) Yashi mai ƙarfi mai ƙarfi da ƙarancin iskar gas
Features: high ƙarfi, low fadada, low gas, jinkirin gas, anti-oxidation
(3) Yashi mai rufi (nau'in ND) Babban zafin jiki (nau'in)
Features: high zafin jiki juriya, high ƙarfi, low fadada, low gas, jinkirin gas, sauki rushewa, anti-oxidation
(4) Yashi mai rufi mai sauƙin ruɗewa
Yana da ƙarfi mai kyau da kyakkyawan aiki na rushewar ƙarancin zafin jiki, wanda ya dace da samar da simintin ƙarfe mara ƙarfe.
(5) Sauran bukatu na musamman mai rufi yashi.
III. Babban tsari na ainihin yin tare da yashi mai rufi
The dumama zafin jiki ne 200-300 ℃, da curing lokaci ne 30-150s, da kuma yashi harbi matsa lamba ne 0.15-0.60MPa. Don ƙananan yashi tare da siffofi masu sauƙi da yashi mai rufi tare da ruwa mai kyau, ana iya zaɓar ƙananan matsa lamba. Don ƙananan yashi na bakin ciki, ana iya zaɓar ƙananan zafin jiki na dumama. Lokacin da zafi mai zafi ya yi ƙasa, za a iya tsawaita lokacin warkewa yadda ya kamata. Gudun da ake amfani da shi a cikin yashi mai rufi shine resin phenolic. Abubuwan da ake amfani da su na tsarin yin mahimmanci: aikin ƙarfin da ya dace; ruwa mai kyau; Kyakkyawan ingancin saman yashi (Ra = 6.3-12.5μm); karfi danshi juriya na yashi core; mai kyau collapsibility da sauƙin tsaftacewa na simintin gyaran kafa.
1. Mold (mold) zafin jiki
A mold zafin jiki ne daya daga cikin manyan dalilai shafi kauri da kuma ƙarfi na harsashi Layer, kullum sarrafawa a 220 ℃ 260 ℃.
2. Yashi harbi matsa lamba da lokaci
Ana sarrafa lokacin harbin yashi gabaɗaya a 3-10s. Idan lokacin ya yi guntu sosai, ba za a iya samar da ƙwayar yashi (core) ba. Matsakaicin harbin yashi gabaɗaya kusan 0.6MPa; lokacin da matsin ya yi ƙasa da ƙasa, yana da sauƙi don haifar da rashin isasshen harbi ko sako-sako. Lokacin hardening: Tsawon lokacin hardening yafi dogara ne akan kauri na ƙirar yashi (core) da zazzabi na ƙirar, gabaɗaya a kusa da 60-120s.
A halin yanzu, mu manyan kayayyakin ne malleable baƙin ƙarfe bututu kayan aiki, tube clamps, frame haši, iska tiyo couplings, biyu aron kusa clamps, guda aron kusa tiyo clamps, camlock couplings, sauri couplings, conduit jiki, KC nonuwa, tiyo menders kuma fiye da daruruwan. samfuran da za ku zaɓa. Barka da zuwa Donghuan Malleable Iron simintin gyare-gyare don tambayoyi, da gaske za mu yi hidimar ku.
Lokacin aikawa: Dec-22-2021