Cikakken tsarin fasaha na graphite electrode

Mahimman tsari na extrusion shine bayan manna ya wuce ta cikin bututun ƙarfe na wani nau'i a ƙarƙashin matsin lamba, an haɗa shi kuma a lalata shi ta hanyar filastik zuwa wani fanko mai siffar da girman.
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 manna) da madauwari arc bututun ƙarfe.
The zafi manna a cikin loading dakin ana korar 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 barga mai gudana, kuma granular Layer yana da layi ɗaya.
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 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 sashin 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 ta kwal a matsayin ɗaure, kusan kashi 10% na masu lalacewa gabaɗaya ana fitar dasu bayan gasasu.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 tsakanin aggregate barbashi don da tabbaci haɗa duk tara tare 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 albarkatun ƙasa, 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 gasa 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 ƙara
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.
Koyaya, bayan gasa ɗanyen kayayyakin, wani ɓangaren kwalta na kwal ya zama iskar gas kuma ya tsere, ɗayan kuma yana murɗawa cikin coke 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, da yawa 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 zahiri da sinadarai na samfuran.
Gabaɗaya magana, samfuran graphitized tare da ƙãra porosity, rage girman girma, ƙãra resistivity, ƙarfin injiniya, a wani zazzabi na ƙimar iskar shaka yana haɓaka, juriya na lalata kuma ya lalace, iskar gas da ruwa cikin sauƙi.
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 ɗin 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 samfurin.
(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 digiri daban-daban na nakasawa 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 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.