AL2O3 ah hian 310s casting process a tel a ni. An tlem poh leh interfacial tension a hniam a, tihbo a harsa zawk bawk. Deoxidation products te chemical bond a chak chuan melting point a sang a, cohesion a sang zawk a, liquid steel nena an chemical interaction a chak lo zawk tih finfiah a ni bawk. Chuvangin, refractory solid particles te chu interfacial tension tling tak a awm chhung chuan steel atanga slag layer ah speed chak takin a float thei a, chu chu deoxidizer strong deoxidizing products strong tak tak a awm a, float leh elimate a awlsam hle. Melting rate pawh hi charge-a chemical composition-ah a innghat bawk. Carbon steel 0.20% resistance chu copper aiin a let 6 in a sang a, 0.90% carbon steel erawh chu copper aiin a let hnih in a sang thung. Charge hi Joule’s Law angin current secondary circuit anga ngaih theih a ni: b. Carbon sang, phosphorus hniam. Slag picking atana licensing condition a awm loh chuan, he hun lai hian powder spraying dephosphorization hman bakah operation hian decarbonization boiling, leh decarbonization-ah dephosphorization a hmang thei bawk. Steel castings hi cast steel a siam parts a ni a, cast iron property-ah pawh a inang a, mahse cast iron aiin a chak zawk. Casting-ah chuan steel casting-ah hian porosity defect leh angle positioning dik lo ang chi defect a awm fo a, chu chuan hun rei tak hmannaah shell fracture a thlen thei a ni. Molten steel deoxygenate kim vek theih nan calcium carbide slag chu 20 ~ 30min chhung dah tur a ni. Calcium carbide slag hmanga steel siam a nih chuan slag chhunga free carbon hian steel carbon siam zawh tawh chu a siam bawk ang. Calcium carbide slag hi calcium carbide slag chak lo (CAC21 % ~ 1.5%) leh calcium carbide slag chak (CAC22 % ~ 4%) ah then a ni a, hei hi calcium carbide awm zat hrang hrang vang a ni.
310S corrosion resistant casting steel castings thatna pakhat chu design-a flexibility a ni. Castings te shape leh size design thlan dan, a bik takin a parts complex shapes leh hollow sections te chu core formation kalphung danglam tak hmangin siam theih a ni. A pianzia leh a pianzia inthlak danglamna hi a awlsam hle a, drawing atanga finished product transformation speed thlengin a rang hle a, quitation response rang tak leh delivery time a ti tawi a ni. A pianzia leh a design ṭha famkim bakah a structure pum pui hian steel casting design-a flexibility leh technological advantage a lantir a: mahse, molten steel-a temperature sang lutuk chu a tawp thei lo lutuk thei lo, a chhan chu smelting temperature sang tak hian raw material leh electric energy tam tak a tichhe mai ni lovin, furnace lining chu a tichhe nasa hle bawk. Electric furnace capacity lian tak nei tan chuan enthalpy sang leh cooling harsa tak avang hian temperature sang tak steel anga lang emaw, reduction operation leh steel pouring a nghawng emaw a awlsam hle. C. Carbon hniam, phosphorus sang tak nei.
Molten pool a lum chak lutuk loh nan ore chu batch-ah dah tur a ni a, batch khatah 1.0% atanga l.5% velin molten steel-a l.5% vel dah tur a ni a, ore batch hmasa ber reaction a chak loh tan chuan ore batch lo awm tur chu minute 5 atanga minute 7 inkar velah dah tur a ni. Molten pool uniform leh intense boiling hi ore adding rate leh interval time maintain-a control a ni ber. Molten pool temperature a san chuan ore adding rate chu a rang lutuk thei lo. Furnace kawngka leh electrode hole-ah meialh nasa tak a lo lang a nih chuan, spatter emaw steel running accident emaw awm lohna turin ore tihtawp a ngai a ni. Steel casting metallurgical manufacturing hian adaptability leh variability chak tak a nei a, chemical composition leh structure control hrang hrang a thlang thei a, project hrang hrang mamawh angin a insiamrem thei a Heat treatment process hrang hrang hmangin mechanical property leh service property hrang hrang a thlang thei a, welding property leh processing property tha tak tak a nei bawk. Tungsten steel tam takah hian molybdenum hian tungsten hmun thenkhat chu composition-ah a thlak thei a, chuvangin a siamna tur thilte chu uluk taka ngaihven a ngai a ni. A châng chuan liquid steel chu deoxidized ṭha tak a ni a, mahse steel-a hydrogen awm tam lutuk avangin a sang chho zel bawk ang a, hetiang hian hriat chhuah a ni ang: liquid steel chu la chhuak la, aluminum forced deoxidization tlemte chu la chhuak la, chutah chuan liquid steel chu deoxidization cup-ah zawi zawiin inject la, a sang lo a nih chuan deoxidation ṭha lo a awm tih lantir A la sang a nih chuan steel-a hydrogen awm zat a sang zawk.
Molten pool-a blowing emaw co gas emaw hian boiling tha tak a siam thei tih hriat a ngai a, mahse steel chhunga bawlhhlawh awmte oxidation a chinfel loh avangin bawlhhlawh tam tak oxidation chu oxygen-ah a innghat a ni. Chuvangin, oxidation period chhunga molten pool-a oxygen pek loh chuan argon emaw CO gas emaw chu a mah chauhin a puak thei lo va, liquid steel pawh a thianghlim tawk lo ang. Cast steel material isotropy leh cast steel structure pumpui chak tak chuan engineering rintlakna a thlen a ni. Hei bakah hian a design lightweight leh delivery time tawi tak avangin price leh economy lamah competitive edge a nei bawk. Stage palina: Low temperature zone charge stage melting. Three-phase arc hi point heat source nen a inang a, phase tina thermal radiation pawh a inang lo va, chuvangin furnace chhunga temperature distribution pawh a inang lo. A tlangpuiin, charge melting chu electrode hnuai lam leh 2# electrode bula hot spot area-ah a tlan chak zawk a, chutih lai chuan kawngka bula temperature hniam area, steel outlet leh L# furnace wall-ah chuan charge melting chu a slow zawk thung. Stage palina chu heng parts-a charge tihthianghlim nan a ni ber.
Practice chuan reasonable oxygen blowing leh molten slag siam hmasak chuan inclusion fully floating a nei thei tih a finfiah a ni. Oxygen blowing hnuah, oxygen flow hnathawh avang hian molten pool chu a then a boil a, hei hi inclusions te inhnaih leh floating atan a tha hle. Slag hian dephosphorization atan a hlawkpui mai bakah nonmetallic inclusions a adsorb tha thei bawk. Pali, melting period dephosphorization operation melting period of the correct operation, chuan steel-a phosphorus 50% atanga 70% vel a paih thei a, slag leh steel flow, automatic slag emaw, powder spraying dephosphorization thar emaw hmanga interface reaction hmanga oxidation period-a residual phosphorus la awm chu a paih chhuak thei a, chu chu a chhuak chhunzawm zel thei a ni. Steel casting rit zawng hi a zau zawngin a inang lo hle. A rit zawng tlemte chu investment precision casting gram sawm vel chauh a ni thei a, steel casting lian tak tak rit zawng chu ton engemaw zat, ton sawm emaw ton za tam tak emaw pawh a ni thei bawk.
310s Casting Process Corrosion Resistant Castings Defect structure inang lo tak. Liquid metal chu mold-ah a inject hnuah, mold wall nei liquid metal layer hmasa ber chu a temperature tlahniam chak tak avangin fine grains-ah a solidified nghal vat a ni. Die wall atanga hlat zawng nen chuan die wall in a nghawng chu a chak lo zauh zauh a, crystal te chu die wall atanga perpendicular lam hawia parallel columnar crystals ah an thang lian a. Casting lai takah chuan heat dissipation hian kawng pawimawh tak a nei lo va, kawng tinrengah a lo thang lian thei a, chutiang chuan equiaxed crystal area chu a lo awm ta a ni. Casting-a structure chu a inang lo tih a hriat theih a, a tlangpuiin, buhfai chu a tam zawk. Hetih lai hian Stokes formula hi a hnuaia formula-ah hian a awlsam thei ang: v =kr2 i. Melting of Charge Power supply tan hnua, melting period bul tanna a ni a, charge melting chu a tlangpuiin pahnihna a ni a, charge chi hrang hrang sem dan chu a dik tur a ni.
Production practice tam tak chu a tawi zawngin a sawifiah a: carbon steel melting sang, fluidity tha, steel temperature a hniam tur a ni a, carbon hniam steel temperature a sang tur a ni Viscosity, chromium steel sang, steel temperature sang zawk, leh refractory materials fluidity emaw corrosion emaw, silicon steel sang, high manganese steel emaw high manganese high silicon steel ang chi te, steel temperature a hniam tur a ni High alloy steel-a temperature control chu alloying element leh bawlhhlawh tam zawk nen a sang zawk tur a ni a, general alloy steel-a temperature control erawh a hniam zawk tur a ni. tissue chu a dense lo. Liquid metal crystallization chu branch te lo thang lian zel hian a ti a, branch inkar liquid gold te chu a solidified a ni. Mahse, branch zawng zawng chu metal-a khat vek a harsa a, chu chuan casting-te chu a tlangpuiin a inpumkhat tir a ni. Chu bakah, mold-a liquid metal inject chu a volume a shrink a, cooling leh solidification laiin replenishment tling lo a awm chuan loose emaw shrinkage emaw cavity pawh a siam thei bawk. Cast iron-a graphite hi flake lian zawk, ball emaw a lem dang emaw-ah a lang fo thin a, chu chu uncompact structure anga ngaih theih a ni bawk. Hetiang steel siam thatna chu steel molten chu slag hmanga ven theih a ni a, chu chuan molten steel temperature a tihhniam mai bakah secondary oxidation leh molten steel suction a control thei bawk. Chu bakah, steel-a non-metallic inclusions suspend te chu slag hmangin a silfai kim thei a, hei hi floating leh removal atan a tha a, mouth spout hmangin deoxidized leh desulfurized belh theih a ni bawk. Chuvangin, he steel chi hi a tam zawk.
Corrosion-resistant castings chunglam chu a rough hle. A chung lam chu a tlangpuiin a hrual a, machined surface nen tehkhin theih a ni lo va, a lem pawh a complex zawk bawk. A tlangpuiin, metal oxide tam zawk chu metal boiling point-ah an boil a, chu chu M0-a boiling point 4800℃, leh M003 te an ni. The boiling point of is only LL00℃, chuvangin metal oxide tam tak volatilization hian element direct volatilization a hmachhawn fo thin. Melting period chhung hian meikhu leh leivut chu furnace kawngka emaw electrode hole emaw atanga chhuakin metal oxide tam tak a awm a, a tam zawk chu FE203 a ni. Hei hi a chhan chu iron hian charge-ah proportion a luah a, liquid iron-a vapor pressure pawh a lian hle a, chuvangin melting period chhunga meikhu leh leivut tlanchhuahna chu a tam zawk chu brownish red a ni.
