Ferro Silicon uye Calcium: Mashandisiro Akakosha Mabhenefiti uye Mashandisirwo 

Ferro silicon necalcium — maviri ekutanga anodyidzana asingawanzo kutungamira nhau dzekugadzira simbi asi chinyararire anoumba matani ese emhando yepamusoro-giredhi simbi yekugadzira, ductile iron pombi, kana mota inokanda mitsara yekugadzira yemazuva ano. KuInner Mongolia Xinxin Silicon Indasitiri Co., Ltd., takapa ese ari maviri kwemakore anopfuura gumi nemana-kwete sezvinhu zvega, asi sevamwe vakanyatsogadzirwa-engineered mukutonga kwesimbi. Ferro silicon uye calcium haingo "deoxidize." Ivo vanoronga kubviswa kweokisijeni, nucleate graphite spheroids, kudzvinyirira manganese sulfide stringers, uye kukiya sarufa mu yakagadzikana, globular inclusions. Ndosaka vatengi muShandong, Hebei, neVietnam vasingabvunze *kana* vachizvida-vanobvunza *kuti ndeipi chiyero*, *icho chidimbu saizi*, uye *unokwanisa kukurumidza sei kusimbisa batch kuenderana?*

Nei ferro silicon uye calcium inoshanda pamwe chete zviri nani pane kuparadzaniswa

Standalone ferrosilicon (FeSi) inobvisa okisijeni-asi inosiya yasara sarufa uye kusaenzana kusanganisa morphology. Calcium yega inonyungudika nekukurumidza musimbi yakanyungudutswa, ichipa kupora kusingaite uye kugovera kusingaenderane. Vasanganise se calcium silicide (CaSi) kana silicon-barium-calcium alloy-uye iwe unowana kugadzikana kwekupisa, controlled release kinetics, uye synergistic desulfurization. Muyedzo yedu yechirimwa yepilot ladle, CaSi yakawedzera pa 0.8–1.2 kg/tani yakaderedza okisijeni yakazara kubva pa32 ppm kuenda pa18 ppm * uye* kucheka sarufa zvirimo ne37% maringe neFeSi-chete marapirwo. Kiyi? Calcium inoshandura alumina inclusions; silicon inotsigira mhepo inoderedza. Hapana inoshanda zvakakwana pasina imwe.

Izvi tinozviona zuva nezuva mumhinduro yevatengi: Iyo Tier-1 yakavakirirwa muTangshan yakachinja kubva kuFeSi + CaAl waya kuenda kune pre-alloyed Si-Ba-Ca mushure mekudzokorora kutadza kwenodularity mu40-mm ductile iron castings. Goho ravo rakasvetuka kubva pa71% kuenda pa94% mukati memavhiki maviri. Sei? Calcium silicide's lower melting point (985 ° C vs. 1,260 ° C yeCa pure Ca) inoita kuti inyunguduke zvakakwana isati yasvika slag skimming. Yayo silicon yemukati inodzivirira kupesana neoxidation panguva yekubaya. Izvo hazvisi dzidziso-ndiyo mazana maviri nemakumi matatu nenomwe anoteedzana kupisa ane nodularity> 85% paASTM A536 Giredhi 65-45-12.

Zvitatu zvepasirese zvikumbiro uko ferro silicon necalcium inoita kana kutyora kuita

• Ductile iron inoculation: Calcium silicide (kazhinji 30–33% Ca, 58–62% Si) nucleates Type I graphite spheroids pa1,420–1,450°C. Kunyanya Ca → flake graphite; yakawandisa → tsvina yecalcium oxide. Yedu yakajairwa CaSi-30 inosangana neGB/T 20935.1-2018 uye inobata ± 0.8% kushivirira paCa content-yakakosha kana inoculant dosage iri 0.12% yekunyunguduka uremu.
• Secondary steel refining: MuRH degassers, Si-Ba-Ca alloys anopfuura FeSi + CaF₂ inosanganiswa. Barium inoderedza kushushikana kwepamusoro; calcium inogadzirisa sulfure; silicon inodzivirira slag kupupa. Mumwe mutengi akadzikisa kushandiswa kweargon ne22% mushure mekuchinja-nekuti kusanganisirwa flotation kwakakwidziridzwa pasina yakawandisa slag volume.
• Cored waya kudya kune dzakatetepa-slab casters: Pano, saizi yechidimbu inonyanya kukosha kupfuura kuumbwa. Isu tinogaya CaSi kuD₅₀ = 0.85 mm—yakasimba zvakakwana kuti idyiwe newaya yakatsiga pa280 m/min, yakakora zvakakwana kudzivirira njodzi yekuputika kweguruva. Vatengi vanorondedzera 92% calcium recovery vs. 68% ne-sub-0.3-mm powders.

Izvo vatengi vanotarisa-uye kubhadhara gare gare

Vamwe vanofungidzira zvese ferro silicon uye calcium zvigadzirwa zvinochinjika. Havasi. Takaedza 17 yakatengeswa kunze kweCaSi batches kubva kumakondinendi matatu: 4 yakakundikana kuongorora sieve (yakawandisa mafaindi), 6 yakaratidza Ca segregation muzvikamu-zvidimbu, uye 3 yaiva > 0.15% phosphorus-yakakwana kuti imbrittle low-carbon steels. Mhedzisiro yenyika chaiyo? Chigayo chepombi muJiangsu chakarasa matani zana negumi nemaviri eAPI 5L X65 mushure mekutsemuka kwehydrogen-yakatemerwa-inotsvagirwa kune phosphorus-hupfumi CaSi iyo yakatsvedza kupfuura yavo yaiuya QC.

Ndicho chikonzero vimbiso yedu yehutano isiri mapepa-iyo fizikisi. Yese mijenya inoitwa OES ongororo (Spectro MAXx), laser diffraction sizing (Malvern Mastersizer 3000), uye inopisa-stage microscope kuona hunhu hwekunyungudika pa1,480 ° C. Isu tinonyora mhinduro dzese dzebvunzo-kwete kungopasa/kufoira. Kana chikumbiro chako chichida <0.02% Al kana <0.005% S, tichagovera iyo mbishi spectra faira. Hapana gloss yekushambadzira. Ingori data iwe yaunogona kudyisa mune yako Melt Shop MES.

Kusarudza chigadzirwa chakakodzera kunotanga nevira rako-kwete yedu catalog

Zvibvunze mibvunzo mitatu usati wahodha:

1. Ndeipi yako tembiricha yeladle profile? Pazasi pe1,400°C? Sarudza CaSi-28 (yakaderera melting point). Pamusoro pe1,480°C? Enda kuCaSi-33 yekupera zvishoma nezvishoma uye kupinda mukati.
2. Chii chinangwa chako chesarufa? >0.020%? Isa pamberi Si-Ba-Ca (Ba inosimudzira sulfide simba). <0.008%? Shandisa CaSi + MgFe cored waya yekupedza kupukuta.
3. Iwindo rako rekutumira rakasimba zvakadii? Yedu yakajairika yekutungamira nguva ndeye 7 mazuva FOB Tianjin. Pamaodha echimbichimbi pasi pemaawa makumi mana nemasere, tinobata 120 MT yeCaSi-30 mune yakasungirirwa dura stock-yakaongororwa, yakafanorongedzwa, yakagadzirira kurodha.

Ferro silicon uye calcium hazvisi zvekuwedzera. Iwo masimbi esimbi-chaiyo, asingadzokerike, uye asingataurweki mumhando yepamusoro-yekutendeseka maapplication. KuInner Mongolia Xinxin Silicon Indasitiri Co., Ltd., tinovabata nenzira iyoyo: hapana mafomula emasheya, hapana generic specs, hapana fungidziro. Ingori ma alloys akarongedzerwa kune yako chemistry, midziyo yako, uye zvimedu musanganiswa wako. Nokuti kana kupisa kwako kunotevera kuchirova 1,430 ° C, chinonyanya kukosha hachisi chinyorwa pabhegi-ndezvokuti calcium inonyunguduka * isati yasvika * mafomu e slag, uye kana silicon inoramba ichishanda * mushure me * argon inomira kuputika.