Calcium Silicon 60 30 Alloy for Steelmaking Deoxidation da Inclusion Control 

Calcium silicon 60 30 yana ba da madaidaicin deoxidation da sarrafa haɗawa a cikin ƙera ƙarfe na zamani-musamman a cikin manyan ƙarfe na ƙirar tsari, maki bututu, da takaddar mota. Mun ba da wannan gami ga shuke-shuken EAF 12 da BOF a duk faɗin China da kudu maso gabashin Asiya a cikin watanni 18 da suka gabata. A kowane yanayi, masu amfani sun ba da rahoton fayyace fa'ida cikin sauri, ƙarancin jimlar oxygen (0.0018-0.0024 wt%), da haɓakar ma'auni a cikin ƙimar gwaji na ultrasonic don haɓakar sashe mai kauri.

Me yasa Calcium Silicon 60 30 Ya Fi Kwarewar CaSi Alloys

Ba duk kayan siliki na siliki ba ne ke yin irin wannan a cikin ladle metallurgy. Sunan "60 30" yana nufin mafi ƙarancin garanti: 60% Si da 30% Ca ta nauyi. Wannan rabon yana da mahimmanci-ba azaman alamar talla ba, amma a matsayin anka na thermodynamic. A 60% Si, gami ya kasance barga yayin ciyarwa; ƙasa da kashi 58%, yana ƙoƙarin rugujewa a aikace-aikacen waya mai tushe. A 30% Ca, narkar da kinetics sun dace daidai da daidaitattun bayanan martabar argon a cikin ladles 80-120. Mun gwada batches CaSi guda bakwai na kasuwanci gefe-da-gefe: kawai waɗanda suka hadu duka ƙayyadaddun bayanai sun sami daidaitaccen farfadowar Ca sama da 62%.

Ikon ƙazanta yana raba aiki da mara ƙarfi. Silicon mu na calcium 60 30 yana riƙe da Al ≤0.3%, S ≤0.03%, da P ≤0.025%. Me yasa hakan ke da mahimmanci? Aluminum yana samar da ƙarancin narkewar Al₂O₃-CaO spinels masu toshe nozzles tundish. Sulfur yana lalata ƙarfin samar da sulfide na calcium. Wani abokin ciniki a Guangdong ya rage bututun rufewar abubuwan da suka faru da kashi 74% bayan canzawa daga wani tsari na 28% Ca tare da 0.52% Al zuwa ƙwararrun 60 30.

Wannan ba ka'idar ba ce. An auna shi a cikin bayanan samfurin tundish, taswirorin haɗa taswira daga nazarin SEM-EDS, da rahotannin samar da niƙa. Calcium silicon 60 30 baya cire iskar oxygen kawai - yana sake fasalin haɗar halittar jiki. Globular CaS da aluminates na calcium sun maye gurbin gungu na alumina masu kaifi. Wannan canjin kai tsaye yana haɓaka ductility a -40 ° C da rayuwar gajiya a cikin abubuwan da aka kafa sanyi.

Inda Madaidaicin CaSi ya kasa—da kuma Yadda 60 30 ke gyara shi

Wasu na iya jayayya cewa mai rahusa 25-28% CaSi yana aiki lafiya don ainihin deoxidation. Amma a aikace, waɗannan maki suna tilasta yin ciniki. Ƙananan abun ciki na alli yana buƙatar ƙarin ƙimar kari-ƙara ƙarar ƙararrawa, haɓaka lalacewa, da diluting zafin ladle. Wani mai yin ƙarfe ya ƙara 1.8 kg/ton na 26% CaSi don buga manufa [O]; canjawa zuwa siliki siliki 60 30 yanke sashi zuwa 1.1 kg/ton yayin da inganta farfadowar Ca ta kashi 19 cikin dari.

Haqiqa farashin ba shine gami ba — tasirin ƙasa ne. Ganyen CaSi da ba a yi amfani da shi ba ya narkar da iskar oxygen sama. Yawan adadin CaSi yana haifar da kirtani na CaS da yawa. Babu yanayin da ya wuce ASTM A1019 ko EN 10228-2 buƙatun ƙididdige ƙima don farantin jirgin ruwa. Matsayinmu na 60 30 ya bugi kunkuntar taga inda ayyukan Ca ya isa don gyara abubuwan da aka haɗa * ba tare da * saturating narke ba. Gwajin gwaje-gwaje na nuna kyakkyawan sakamako a 0.0025-0.0032% narkar da Ca-wanda za'a iya samu kawai tare da sarrafa abun ciki mai ƙarancin iskar gas (<15 cm³/100g).

Muna gwada kowane zafi don hydrogen, nitrogen, da oxygen ta yin amfani da fusion inert gas (Leco ONH-836). Babu jiragen ruwa batch ba tare da cikakkiyar takardar shaidar bincike ba - gami da ainihin Ca, Si, Al, S, P, da sauran Mg. Abokan ciniki sun gaya mana wannan ganowa yana yanke lokacin QA na cikin gida da rabi lokacin da suka cancanci sabon zafi don aikace-aikacen matakin matakin nukiliya.

Haɗin kai Ya Fi Sauƙi fiye da yadda kuke tunani

Ciyar da silikon siliki 60 30 baya buƙatar sake gyarawa. Yana aiki a daidaitattun tsarin waya (Ø13-15 mm), injectors na lanƙwasa, har ma da saitin allurar foda-idan girman rabon barbashi ya tsaya tsakanin 0.5-3.0 mm. Muna ba da shi a cikin nau'i na zahiri guda uku: dakakken granules (don ƙari na ladle), waya mai haɗaɗɗiya da aka rigaya (tare da sheathing Fe ko SiMn), da daidaitattun jakunkuna masu rufewa mai nauyin kilogiram 25 don mahalli mai tsabta.

Bayanan shigarwa na maɓalli: adana ƙasa da 35 ° C kuma nesa da danshi. Fitar da iska mai danshi na awanni 48 yana ƙaruwa da iskar shaka-bayyane kamar ƙurar launin toka akan granules. Wannan Layer oxide yana jinkirta rushewa kuma yana rage ingantaccen isar da Ca. Mun haɗa fakitin bushewa da alamun zafi a cikin kowane jigilar kayayyaki na fitarwa. Don ci gaba da layukan simintin gyare-gyaren da ke gudana> ton 150/hour, muna ba da shawarar ciyar da daƙiƙa 30-60 kafin tashin argon na ƙarshe-ba lokacin-don ƙara yawan lokacin zama a cikin ƙarfen ƙarfe ba.

Ra'ayin gaskiya na duniya yana tabbatar da aminci. Tier-1 auto maroki a Chongqing ya yi gudu 47 a jere heats ta amfani da mu calcium silicon 60 30. Matsakaicin hada adadin da mm² ya ragu daga 8.2 zuwa 2.7 (ASTM E45 Hanyar A). Yawan amfanin ƙasa ya karu da kashi 3.1 cikin ɗari-ba daga ƙima ba, amma daga ƙaramar sake yi saboda lahani.

Zaɓan Mai Kayayyakin da Ya dace yana nufin yin Tambayoyi masu Dama

Tambayi mai kawo kaya: Kuna niƙa kuma kuna haɗawa a cikin gida-ko kawai sake tattara kayan ɓangare na uku? Za ku iya samar da takamaiman OES da bayanan Leco? Menene matsakaicin bambance-bambancen dawo da Ca ku a cikin zafi-ton 100? Inner Mongolia Xinxin Silicon Industry Co., Ltd. ya amsa e ga duka ukun. Muna aiki da keɓaɓɓun layin samar da CaSi tare da sarrafa zafin jiki mai rufewa, bincike narke na ainihi, da sikelin sarrafa kansa wanda aka daidaita zuwa ± 0.1 mm haƙuri.

Silicon ɗin mu na calcium 60 30 yana goyan bayan dabarun ferroalloy-ba don deoxidation kawai ba, amma don injiniyan haɗawa da niyya. Yana haɗa nau'i-nau'i mai tsinkaya tare da ladles da aka yi wa Mg don ingantacciyar nodularity a cikin baƙin ƙarfe ductile, kuma tare da ƙarin Ti don ingantaccen maki HSLA microalloyed. Ziyarci xinsilicon.com don zazzage sanarwar fasaha ta mu "CaSi 60 30 a cikin Ladle Metallurgy: Shafukan Shafuka, Taswirorin Haɗawa, da Binciken Yanayin Kasawa" -wanda aka gina daga bayanan samarwa 217 a cikin aikin ƙarfe 14.

Calcium silicon 60 30 ba kayayyaki bane. Kayan aiki ne mai ƙima. Yi amfani da shi daidai, kuma za ku ga mafi tsaftataccen slags, maɗaurin kayan aikin inji, da ƙananan abubuwan ban mamaki a injin gamawa.