Cikakken tsarin fasaha na graphite electrode

Mahimman tsari na extrusion shine bayan manna ya wuce cikin bututun ƙarfe na wani sifa a ƙarƙashin matsin lamba, an haɗa shi kuma a canza shi ta hanyar filastik zuwa wani fanko tare da takamaiman tsari da girmansa.
Tsarin gyare-gyaren extrusion shine yafi aikin nakasar filastik na manna.

Ana aiwatar da tsarin extrusion na manna a cikin ɗakin kayan (ko silinda na silinda) da madauwari arc bututun ƙarfe.
The zafi manna a cikin loading dakin ana kora da raya main plunger.
Ana tilasta iskar gas a cikin manna don ci gaba da fitar da shi, manna yana ci gaba da haɗawa kuma manna yana motsawa gaba a lokaci guda.
Lokacin da manna ya motsa a cikin ɓangaren Silinda na ɗakin, ana iya ɗaukar manna a matsayin tsayayyen kwarara, kuma granular Layer yana daidai da daidai.
Lokacin da manna ya shiga ɓangaren bututun ƙarfe tare da nakasar baka, manna kusa da bangon bakin yana ƙarƙashin juriya mafi girma a gaba, kayan ya fara lanƙwasa, manna a ciki yana samar da saurin gaba daban-daban, manna na ciki na gaba a ciki. gaba, haifar da samfurin tare da radial yawa ba uniform, don haka a cikin extrusion block.

An haifar da damuwa na ciki ta hanyar saurin daban-daban na ciki da na waje.
A ƙarshe, manna yana shiga ɓangaren nakasar layin layi kuma an fitar dashi.

Menene gasa?Mene ne dalilin gasa?

Roasting tsari ne na maganin zafi wanda aka matsar da albarkatun da aka damfara a wani ƙima a ƙarƙashin yanayin ware iska a cikin matsakaicin kariya a cikin tanderun.

(1) Ware rashin ƙarfi Don samfuran da ke amfani da kwalta na kwal a matsayin ɗaure, kusan kashi 10% na rashin ƙarfi ana fitarwa gabaɗaya bayan gasasshen.Saboda haka, ƙimar gasasshen kayan gabaɗaya yana ƙasa da 90%.

(2) Binder coking raw kayayyakin ana gasassu bisa ga wasu fasaha yanayi don yin daura coking.A coke cibiyar sadarwa da aka kafa a tsakanin aggregate barbashi don da tabbaci haɗa duk aggregate da daban-daban barbashi girma dabam, sabõda haka, samfurin yana da wasu jiki da sinadaran Properties. .A ƙarƙashin yanayi guda ɗaya, mafi girman ƙimar coking, mafi kyawun inganci.Matsakaicin matsakaicin matsakaici - zafin jiki na kwalta yana kusan 50%.

(3) Kafaffen nau'i na geometric

A cikin tsarin gasasshen kayan daɗaɗɗen, abin mamaki na ƙaura mai laushi da ƙaura ya faru.Tare da karuwar zafin jiki, cibiyar sadarwar coking an kafa, yana sa samfuran su kasance masu ƙarfi.Saboda haka, siffarsa ba ta canzawa yayin da zafin jiki ya tashi.

(4) Rage resistivity
A cikin roasting tsari, saboda kawar da volatiles, da coking na kwalta Forms a coke Grid, da bazuwar da kuma polymerization na kwalta, da samuwar babban hexagonal carbon zobe jirgin sama cibiyar sadarwa, da dai sauransu, da resistivity rage muhimmanci. Game da 10000. x 10-6 raw kayayyakin resistivity Ω "m, bayan gasa ta 40-50 x 10-6 Ω" m, da ake kira masu gudanarwa masu kyau.

(5) Ƙarin ƙarar ƙarar
Bayan gasa, samfurin yana raguwa da kusan 1% a diamita, 2% a tsayi da 2-3% a girma.

A danyen samfurin bayan matsawa gyare-gyare yana da low porosity.
Duk da haka, bayan gasa danyen kayayyakin, wani ɓangaren kwalta na kwal ya zama iskar gas kuma ya tsere, ɗayan kuma yana yin coke na bituminous.
Ƙararren coke na bituminous da aka samar ya yi ƙasa da na bitumen kwal. Ko da yake yana raguwa kaɗan a cikin tsarin gasa, yawancin marasa daidaituwa da ƙananan pores masu girma dabam dabam har yanzu suna samuwa a cikin samfurin.
Misali, jimlar porosity na samfuran graphitized gabaɗaya har zuwa 25-32%, kuma na samfuran carbon gabaɗaya 16-25%.
Kasancewar adadi mai yawa na pores ba makawa zai yi tasiri ga kayan jiki da sinadarai na samfuran.
Kullum magana, graphitized kayayyakin tare da ƙara porosity, rage girma yawa, ƙara resistivity, inji ƙarfi, a wani zazzabi na hadawan abu da iskar shaka kudi ne kara, lalata juriya ne kuma deteriorated, gas da ruwa mafi sauƙi permeable.
Impregnation wani tsari ne don rage porosity, ƙara yawa, ƙara ƙarfin matsawa, rage juriya na ƙãre samfurin, da canza yanayin jiki da sinadarai na samfurin.

Graphitization: Menene graphitization?

Menene manufar graphitization?

Graphitization wani tsari ne na maganin zafi mai zafi ta amfani da samfuran gasa don zafi zuwa babban zafin jiki a cikin matsakaicin kariyar graphitization tanderun don yin grid na jirgin sama mai hexagonal carbon atom ya canza daga rikice-rikice a cikin sarari mai girma biyu don daidaitawa cikin tsari mai girma uku sarari kuma tare da tsarin graphite.

Manufofinta su ne:
(1) Inganta yanayin zafi da lantarki na samfurin.
(2) Don haɓaka juriyar girgiza zafi da kwanciyar hankali na samfur.
(3) Haɓaka mai da juriya na samfur.
(4) Cire ƙazanta da haɓaka ƙarfin samfur.

(1) Bukatar tiyatar filastik

Kayayyakin carbon da aka danne tare da takamaiman girman da siffa suna da nau'ikan nakasu daban-daban da lalacewar karo yayin gasa da zane. A lokaci guda, wasu filaye suna ɗaure a saman samfuran carbon da aka matsa.
Ba za a iya amfani da shi ba tare da sarrafa injina ba, don haka samfurin dole ne a siffata kuma a sarrafa shi zuwa ƙayyadadden siffar geometric.

(2) Bukatar amfani

Dangane da buƙatun mai amfani don sarrafawa.
Idan ana buƙatar haɗa na'urar graphite na tanderun ƙarfe na ƙarfe, dole ne a sanya shi cikin rami mai zare a ƙarshen samfurin, sannan a haɗa na'urorin lantarki guda biyu don amfani da haɗin haɗin zaren na musamman.

(3) Bukatun fasaha

Wasu samfuran suna buƙatar sarrafa su zuwa siffofi na musamman da ƙayyadaddun bayanai bisa ga buƙatun fasaha na masu amfani.
Har ma ana buƙatar ƙarancin ƙasa.