Low Carbon Ferrochrome (LC FeCr) Muqaddima, Kimiyyar Bayanai, Masu Aikawa Da Yau Da Ake Amfani Densu

Gabatarwa

Low Carbon Ferrochrome (LC FeCr) shine na-ferroalloy mai mahimmanci da ke karamar ingancin shidda na uku. Bayan wani High Carbon Ferrochrome, LC FeCr yana da ƙarin karbon mai zarin, ya zama abin da ba za a iya samar da shidda ba da yawa da ke da shidda mai karbon, kamar stainless steel, super alloys, da wani ƙididda biyu.

Kimiyar Ƙima

A cikin nufin Low Carbon Ferrochrome shine ƙarin karbon mai zarin, ke nan daga cewa 0.015% zuwa 0.50%, depending on the specific grade. Shakina na uku shine chromium, ke nan daga cewa 60% zuwa 70% na alloy. Wani abubuwa biyu sune silicon (kada ya zarin), da kadanin phosphorus da sulfur, wanda ke kwana da yawa don zinza aikin da ke cikin shidda na ƙarshe.

Abubuwa da ke amfani da ita

A mai zuwa a LC FeCr shine wani abin da ake amfani dashi don nuna chromium zuwa gishin farashin kafin kuma ba za a nuna carbon zafi ba.

1. Itace na Farashin Stainless: Wannan shine abin da ake amfani dashi karshen. Kadan daga cikin farashin stainless, wasu daga su Austenitic da Ferritic, suna buƙata ƙarin chromium (16-26%) kuma carbon kirƙira don hana karbidin chromium. Wannan karbidi zai iya tafiya zuwa tsakiyar bututu, yin "sensitization," zai hana tacewar gishin da ke cikin gishin da ke nufin farashin stainless.
2. Alloys na Tsiba da Superalloys: LC FeCr shine wajen samar da farashin acid-resistant, alloys na mituna, da sauran alloys mai tsaban tacewa da ake amfani dashi a cikin sarrafa aerospace, kimia, da enegya.
3. Alloys na Carbon Dogon na Chromium: A yaya don manufacture na alloy steels inda ake buƙatar sauyan ƙima na chromium da carbon dogon don zai su da ma'ana da keɓiɓiyar ƙima'ancin da keɓiɓiya.

Matsayin Gudunwa

Faruwa na Low Carbon Ferrochrome yana ƙwayoye da ƙarin ingantaccen daraja sosai na carbon, wanda ke ƙarin yawan ingantaccen da ke ciki, kamar yadda ke buƙatar izinin carbon. Dalilin muhimmi na ƙarin ingantaccen shine:

1. Tace na Perrin: Wannan shine ma'ana na metallo-thermic. Yana maganem chromite ore ta sodium chromate (ko wani abu na chromium) da silicon inda aka samu shi ne daga Ferrosilicon. Tace ya samo ƙafi mai ƙafi (samfuran abin da ya ke kifi) kuma take place a cikin reactor. Silicon ya zama abin da ake amfani da shi don zanin, kuma don haka ba a amfani da carbon ba, ferrochrome mai kasa na carbon ya zama mai carbon dogon. Wannan tace zai iya amfani da sauyan mai carbon mai zuwa (<0.015% C).
   2. Gwajin Decarburization (VODC): Wannan shine ma'azun cikin zaman kanso da kusurwa. A yau da a ciki zai shagawa gudun chromite a furusin da ke zanen arc don samar da sauya na Ferrochrome mai carbon. Wannan sauya na FeCr zai sauke a cikin Converter a yankin gwajin (Vacuum Oxygen Decarburization - VOD). Zai sa oxygen ya rage a cikin sauya don oxidize da sake wutar carbon. Cella gwajin tare da saita gasin carbon monoxide, wanda ke kara rashin carbon ta hanyar mara izumi na chromium. Wannan tsarin zai ba da izumi don samar da carbon levels da ke so.

Anyang Jinfengda sune da kejiyar mutane, muka ba da mutane mai kwaliti na Low Carbon Ferrochrome wanda yake fitar da alamar kimia.

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