Muhimmiyar rawa na kore siliki carbide foda a cikin kayan refractory
Koren silicon carbide foda, sunan yana da tauri. Yana da gaske wani irinsilicon carbide (SiC), wanda aka narke a sama da digiri 2000 a cikin tanderun juriya tare da albarkatun kasa irin su yashi quartz da kuma man coke. Daban-daban da na kowabakin siliki carbide, Yana da madaidaicin sarrafa tsari a cikin mataki na gaba na narkewa, tare da ƙazantattun ƙazanta da tsaftar kristal, don haka yana ba da launi na musamman ko kore ko duhu. Wannan "tsarki" yana ba shi kusan matsananciyar taurin (taurin Mohs yana da girma kamar 9.2-9.3, na biyu kawai zuwa lu'u-lu'u da boron carbide) da kuma kyakkyawan yanayin zafi mai zafi da ƙarfin zafi. A cikin fage na kayan refractory, yana da "kashi mai wuya" wanda zai iya jurewa, yaki, zafi da ginawa.
Don haka, ta yaya wannan koren foda zai iya nuna ƙarfinsa a cikin mummunan duniya na kayan haɓakawa kuma ya zama "mutumin maɓalli" mai mahimmanci?
Inganta ƙarfi da jefa babban zafin jiki "kasusuwa na ƙarfe": Abubuwan da ba za a iya jurewa sun fi jin tsoron "rashin jurewa" yanayin zafi ba, zama taushi da rushewa.Koren silicon carbide micropowderyana da matuƙar ƙarfi mai ƙarfi da ƙarfin zafi mai kyau. Ƙara shi zuwa wasu simintin gyaran fuska daban-daban, kayan ramming ko tubali yana kama da ƙara ragamar ƙarfe mai ƙarfi zuwa kankare. Zai iya samar da kwarangwal mai ƙarfi a cikin matrix, yana tsayayya da nakasawa da laushi na kayan a ƙarƙashin babban nauyin zafin jiki. Siffofin fashewar tanderun ƙarfe na babban masana'antar ƙarfe sun yi amfani da kayan yau da kullun a da, wanda ya ɓace da sauri, ƙimar ƙarfe ba za a iya ƙarawa ba, kuma yawan kulawa yana jinkirta samarwa. Daga baya, an sami ci gaba na fasaha, da kuma adadinkoren silicon carbide micropowder an karu sosai. "Kai, yana da ban mamaki!" Daga baya daraktan bitar ya tuno da cewa, “Lokacin da aka saka sabon kayan, narkakkar ƙarfen ya ratsa, gefen tashar ya ‘cika’, adadin baƙin ƙarfe ya juye, kuma an rage yawan lokutan kulawa da fiye da rabin, kuma kuɗin da aka tara duk kuɗi ne na gaske!” Wannan taurin shine tushen dadewar kayan aiki mai zafi.
Inganta yanayin zafi da kuma shigar da "ruwan zafi" akan kayan: Mafi yawan zafin da ke daɗaɗɗen kayan haɓaka shine, mafi kyau! Don wurare kamar kofofin tanda na coke da bangon gefen cell na aluminum electrolytic, kayan da kansa yana buƙatar gudanar da zafi na ciki da sauri don hana zafin gida daga yin girma da lalacewa. The thermal conductivity na kore silicon carbide micropowder ne shakka a "kyakkyawan dalibi" a cikin wadanda ba karfe kayan (ɗakin zafin jiki na thermal conductivity coefficient na iya isa fiye da 125 W / m · K, wanda shi ne da dama na sau na talakawa yumbu tubalin). Ƙara shi zuwa kayan da ke jujjuyawa a cikin wani yanki na musamman kamar shigar da ingantaccen "bututu mai zafi" a cikin kayan, wanda zai iya inganta haɓakar yanayin zafi na gaba ɗaya, taimakawa zafi ya zama da sauri da kuma bazuwa a ko'ina, da kuma guje wa zafi na gida da peeling ko lalacewa ta hanyar "ƙwannafi".
Haɓaka juriya na girgiza thermal da haɓaka ikon "zama cikin nutsuwa yayin fuskantar canji": Ɗaya daga cikin mafi damuwa "masu kashe" na kayan da ba su da ƙarfi shine saurin sanyaya da dumama. Ana kunna wutar lantarki da kashewa, kuma zafin jiki yana canzawa da ƙarfi, kuma kayan yau da kullun suna da sauƙin "fashe" da kwasfa.Green siliki carbideMicropowder yana da ƙananan haɓaka haɓaka haɓakar haɓakar thermal da saurin zafin zafi, wanda zai iya daidaita damuwa da sauri ta hanyar bambancin zafin jiki. Gabatar da shi a cikin tsarin refractory zai iya inganta ƙarfin kayan don tsayayya da canje-canjen zafin jiki na kwatsam, wato, "juriyawar girgiza zafi". Iron bakin da aka jefar da simintin rotary kiln yana fuskantar tsananin sanyi da zafi mai zafi, kuma gajeriyar rayuwarsa matsala ce mai dadewa. Wani gogaggen injiniya injiniya gini ya gaya mani: "Tun lokacin da aka yi amfani da simintin ƙarfe mai ƙarfi tare da koren silicon carbide micropowder a matsayin babban jigon da foda, tasirin ya kasance nan da nan. Lokacin da iska mai sanyi ta buso lokacin da aka dakatar da kiln don kiyayewa, wasu sassa suna fashe, amma wannan kayan bakin kiln yana da ƙarfi kuma yana da ƙarfi, kuma akwai ƙarancin fashewar fage! Wannan "kwantar da hankali" shine don magance tashin hankali a cikin samarwa.
Dominkoren silicon carbide micropowder ya haɗu da ƙarfi mai ƙarfi, haɓakar haɓakar thermal, kyakkyawan juriya mai ƙarfi na thermal, da juriya mai ƙarfi mai ƙarfi, ya zama “abokin rai” a cikin ƙirƙira kayan haɓaka kayan aiki na zamani. Daga tanderun fashewa, masu juyawa, ramukan ƙarfe, da tankuna masu ƙarfi a cikin ƙarfe da ƙarfe ƙarfe zuwa sel electrolytic a cikin ƙarfe mara ƙarfe; daga muhimman sassa na siminti kilns da gilashin kilns a cikin ginin kayan masana'antu zuwa sosai lalatattu kilns a cikin filayen sunadarai masana'antu, wutar lantarki, da sharar gida incineration, har ma da zuba kofuna da kwarara karfe tubalin domin simintin gyaran kafa... Duk inda akwai high zafin jiki, lalacewa, kwatsam canji, da yashwa, wannan kore micropowder ne aiki. An saka shi cikin shiru a cikin kowane tubali mai jujjuyawa da kowane murabba'in simintin gyare-gyare, yana ba da kariya mai ƙarfi ga "zuciya" na masana'antar - kilns mai zafi mai zafi.
Tabbas, "nama" na koren silicon carbide micropowder kanta ba sauki. Daga zaɓin albarkatun ƙasa, daidaitaccen tsari na narkewar wutar lantarki (don tabbatar da tsabta da kore), don murkushewa, niƙa, ƙwanƙwasa da ƙazanta, ƙayyadaddun ƙayyadaddun ƙayyadaddun hydraulic ko iska, zuwa marufi mai ƙarfi bisa ga girman girman rabo (daga 'yan microns zuwa ɗaruruwan microns), kowane mataki yana da alaƙa da kwanciyar hankali na samfurin ƙarshe. Musamman, da tsarki, barbashi size rarraba da barbashi siffar da micropowder kai tsaye shafi ta dispersibility da sakamako a refractory kayan. Ana iya cewa babban ingancin koren siliki carbide micropowder shine kanta samfurin haɗin fasaha da fasaha.