Calcium Silicon 60 30 Alloy yeSimbi Making Deoxidation uye Inclusion Control 

Calcium silicon 60 30 inopa chaiyo deoxidation uye kubatanidza kutonga mukugadzira simbi yemazuva ano-kunyanya mumasimbi emhando yepamusoro-giredhi, mamakisi epombi, uye pepa remotokari. Isu takapa iyi alloy kune gumi nemaviri EAF uye BOF zvidyarwa muChina neSoutheast Asia mumwedzi gumi nemisere yadarika. Muzviitiko zvese, vashandisi vakashuma nekukurumidza slag kujekeswa, yakaderera yakazara okisijeni yasara (0.0018–0.0024 wt%), uye inoyerwa kuvandudzwa muultrasonic test test pass rates yegobvu-chikamu forgings.

Sei Calcium Silicon 60 30 Inodarika Generic CaSi Alloys

Haasi ese e calcium silicon alloys anoita zvakafanana mu ladle metallurgy. Iyo "60 30" zita rinoreva zvishoma zvakavimbiswa: 60% Si uye 30% Ca nehuremu. Chiyero ichocho chakakosha-kwete sechinyorwa chekutengesa, asi se thermodynamic anchor. Pa60% Si, iyo alloy inoramba yakagadzikana panguva yekudya; pazasi 58%, inoita kunge ichaputsika mune cored waya maapplication. Pa30% Ca, dissolution kinetics inoenderana neyakajairwa argon-inomutsa maprofiles mu80-120 ton ladles. Takaedza mabheji manomwe eCaSi padivi-ne-parutivi: chete ayo akasangana ese ari maviri specs akawana anowirirana Ca kudzoreredza pamusoro pe62%.

Kudzora kusachena kunoparadzanisa kushanda kubva kune isina kusimba. Yedu calcium silicon 60 30 inobata Al ≤0.3%, S ≤0.03%, uye P ≤0.025%. Nei izvozvo zvine basa? Aluminium inoumba yakaderera-kunyungudika Al₂O₃-CaO spinels inovhara tundish nozzles. Sulfur inosvibisa calcium's sulfide-forming capacity. Mumwe mutengi muGuangdong akadzikisa zviitiko zvekuvharika kwenozzle ne74% mushure mekuchinja kubva pa28% Ca batch ine 0.52% Al kuenda kugiredhi yedu yakasimbiswa 60 30.

Izvi hazvisi dzidziso. Iyo inoyerwa mune tundish sampling data, kubatanidza mepu kubva kuSEM-EDS kuongororwa, uye rolling mill goho remishumo. Calcium silicon 60 30 haingobvisi okisijeni-inogadzirisazve kusanganisa morphology. Globular CaS uye calcium aluminates inotsiva inopinza-kumucheto kwealumina masumbu. Shanduko iyoyo inonatsiridza zvakananga ductility pa -40 ° C uye kuneta hupenyu mune inotonhora-yakaumbwa zvikamu.

Apo Standard CaSi Inokundikana-uye Sei 60 30 Inoigadzirisa

Vamwe vanogona kupokana kuti zvakachipa 25-28% CaSi inoshanda zvakanaka kune yakakosha deoxidation. Asi mukuita, mamakisi iwayo anomanikidza kutengeserana. Yakaderera calcium yemukati inoda mwero wekuwedzera wepamusoro-kuwedzera slag volume, kusimudza refractory kupfeka, uye diluting ladle tembiricha. Mumwe mugadziri wesimbi akawedzera 1.8 kg / toni ye26% CaSi kurova chinangwa [O]; kuchinjira kucalcium silicon 60 30 cheka dosi kusvika 1.1 kg/ton uku uchivandudza Ca recovery ne19 percentage points.

Mutengo chaiwo hausi iwo alloy - ndiko kudzika kwemvura. Under-dosed CaSi inosiya yakanyungudika oksijeni yakakwira. Over-dosed CaSi inogadzira yakawandisa CaS tambo. Chero mamiriro ezvinhu anopfuura ASTM A1019 kana EN 10228-2 kusanganisirwa zviyero zvinodiwa zvekumanikidza mudziyo ndiro. Yedu 60 30 giredhi inorova hwindo rakamanikana uko Ca chiitiko chinokwana kugadzirisa inclusions *pasina* kunyungudika kunyungudika. Miedzo yeLab inoratidza mibairo yakakwana pa 0.0025–0.0032% yakanyungudika Ca-inogoneka chete neyakaomarara kuumbwa kwekutonga uye yakaderera gasi zvirimo (<15 cm³/100g).

Tinoedza kupisa kwese kwehydrogen, nitrogen, uye oxygen tichishandisa inert gas fusion (Leco ONH-836). Hapana ngarava dzebatch dzisina chitupa chakazara chekuongorora-kusanganisira chaiyo Ca, Si, Al, S, P, uye yasara Mg. Vatengi vanotiudza kuteedzera uku kunocheka yavo yemukati QA nguva nehafu kana vachikodzera kupisa kutsva kwekushandisa kwenyukireya-giredhi.

Kubatanidzwa Zviri Nyore Kupfuura Zvaunofunga

Kudyisa karusiyamu nesilicon 60 30 hakudi retrofit. Inoshanda mune akajairwa cored waya masisitimu (Ø13-15 mm), akanyura lance majekiseni, uye kunyange hupfu jekiseni setups-kana particle size kugovera kunogara mukati me 0.5-3.0 mm. Isu tinozvipa mumhando nhatu dzemuviri: dzakapwanyika granules (yekuwedzera ladle), pre-alloyed cored waya (ine Fe kana SiMn sheathing), uye nemabhegi akavharirwa 25 kg vacuum-akavharwa enzvimbo dzakachena.

Zvinyorwa zvekuisa zvakakosha: chengetedza pasi pe35 ° C uye kure nekunyorova. Kuratidzwa kumhepo ine hunyoro kwe>48 maawa kunowedzera oxidation yepasi-inoonekwa seguruva grey pamagranules. Iyo oxide layer inononoka kunyungudika uye inoderedza inoshanda Ca delivery. Isu tinosanganisira desiccant mapaketi uye humidity zviratidzo mune zvese zvinotumirwa kunze kwenyika. Pamitsetse yekukanda inoenderera ichimhanya > 150 matani paawa, tinokurudzira kudyisa masekonzi 30–60 isati yasvika argon yekupedzisira - kwete panguva - kuwedzera nguva yekugara muhuwandu hwesimbi.

Mhinduro yechokwadi-yenyika inosimbisa kuvimbika. Mutengesi wemotokari weTier-1 muChongqing akamhanyisa kupisa kwakatevedzana makumi mana nenomwe achishandisa silicon yedu yecalcium 60 30. Avhareji yekuverenga pamm² yakadzikira kubva pa8.2 kuenda pa2.7 (ASTM E45 Method A). Goho rakawedzera ne 3.1% - kwete kubva pakurambwa kushoma, asi kubva kune vashoma vadzokororwa nekuda kwekuremara kwepasi.

Kusarudza Mutengesi Akakodzera Kunoreva Kubvunza Mibvunzo Yakakodzera

Bvunza mutengesi wako: Iwe unogaya nekusanganisa-mumba-kana kungorongedza zvechitatu-bato zvinhu? Unogona here kupa batch-chaiyo OES uye Leco data? Ndeipi yako avhareji yeCa kudzoreredza musiyano mukati me100-ton heats? Inner Mongolia Xinxin Silicon Industry Co., Ltd. inopindura kuti hongu kune vese vari vatatu. Isu tinoshanda yakatsaurirwa CaSi mitsara yekugadzira ine yakavharwa-loop tembiricha yekudzora, chaiyo-nguva yekunyunguduka kuongororwa, uye otomatiki sieving yakarongedzerwa ku ± 0.1 mm kushivirira.

Yedu calcium silicon 60 30 inotsigira ferroalloy mazano-kwete chete deoxidation, asi yakanangwa kubatanidza engineering. Iyo inofambidzana nekufungidzira neMg-yakarapwa ladles yekuvandudza nodularity mu ductile iron, uye neTi yekuwedzera kune yakagadzikana microalloyed HSLA mamakisi. Visit xinxinsilicon.com kudhawunirodha yedu tekinoroji bulletin "CaSi 60 30 muLadle Metallurgy: Dosage Charts, Inclusion Mepu, uye Failure Mode Analysis" -yakavakwa kubva ku217 marekodhi ekugadzira pane gumi nemana masimbi.

Calcium silicon 60 30 haisi chinhu. Icho chishandiso chakagadziriswa. Ishandise nemazvo, uye iwe uchaona akachenesa slags, akaomesesa mabhendi ezvivakwa, uye mashoma anoshamisa paguyo rekupedzisa.