Electric Furnace TRIZ Cases

A calculated hot rolling temperature offset counters Mo, Sn, Sb, and As effects, improving steel scrap processability and roll life.

A 13Cr-Ni-Mo seamless tubular alloy uses degassing and heat treatment to resist pitting and stress corrosion cracking at elevated temperatures.

A 13Cr-Ni-Mo alloy balances cost and corrosion resistance, limiting pitting and stress corrosion cracking in hot chloride service.

Cold-formed pellets bind C-grade iron fines into a low-cost scrap substitute that cuts waste pollution and improves electric arc furnace handling.

Microwave-powered hydrogen plasma reduces ore ultrafines at low temperature, cutting CO2 and energy use while avoiding particle agglomeration.

By tuning pellet oxide-to-metallic iron ratios, this case suppresses shaft-furnace clustering while allowing higher reduction temperatures and productivity.

An electric field across a molten-salt bath speeds ion exchange in ultra-thin glass, increasing compressive stress and depth.

Controlled Mn-Cr alloy composition narrows hardenability to ≤3 HRC, reducing gear heat-treatment distortion while maintaining strength.

Simultaneous oxygen and carbon injection with defined lance geometry generates CO bubbles that stably lower molten steel nitrogen to low levels.

Composite organic and inorganic binders keep iron oxide briquettes intact in transport while balanced carbon supports high-yield EAF iron recovery.

Using induction coils above 10 kHz, this case heats DRI uniformly during transfer while limiting energy use and avoiding overheating.

Hydrogen-containing forming gas cuts iron oxide in molten electric arc furnace slag, enabling reactive granulated slag for recycling.

Using reduced iron at 60%+ metallization, this case shows how slag basicity and carbon adjustment cut submerged arc furnace melting energy.

Different gases in shared-space dual furnaces cut FeO in slag, improve molten steel recovery, and help control nitrogen during DRI melting.

Rapid solidification and spheroidizing annealing refine carbide distribution in high-vanadium high-speed steel while reducing porosity and heat-treatment time.

Melt impact and rapid spheroidizing annealing break coarse carbide networks, reduce porosity, and improve steel strength, toughness, and wear resistance.

Low-permeability electrode holders support heating at 300 Hz and above while reducing power loss and electrode corrosion in glass furnaces.

An electric melter uses organic phosphorus additives to adjust pig iron composition, lower melting point, and reduce decarburization work.

An annular shroud gas stream opens paths through scrap steel before a carrier stream delivers lime into the vessel, reducing tap-to-tap delay.

Low-carbon, low-gangue DRI is melted at 1600–1700°C to form high-purity iron with less slag and oxygen dissolution.

Gas blowing and slag adjustment keep slag fluid during induction melting, improving iron separation and enabling construction-material recovery.

This case applies direct current at the slag-metal interface to lower sulfur faster while limiting power use and facility risk.

A plasma arc furnace uses recycled aluminum, lime, and silica to reduce chromite, recover ferrochrome, and granulate slag.

Continuous shredded scrap feeding stabilizes the electric arc and eliminates gas burner dependency, resolving batch-wise charging interruptions.

Reducing lead in copper alloys degrades machinability. Sulfur addition creates sulfides that restore cutting performance and pressure tightness.

Optimized Ti and N concentrations in Fe-Cr-Ni alloys prevent TiN inclusions that cause surface defects in sheathed heaters.

Precise carbon and lead content management resolves the trade-off between surface wear resistance and bulk toughness in heavy load freight rails.

Inert gas stirring and carbonaceous material layers suppress slag foaming, enabling upright tapping without tilting the furnace.

Low alkali glass composition enables electric melting with tin oxide electrodes while maintaining high transparency and brightness.

Adding boron to high-carbon steel forms boron nitride, reducing free nitrogen below 80 ppm to prevent strain aging and maintain ductility.

Electric melter operates in reducing atmosphere to lower iron oxide content in slag and increase metallic iron yield.

Intermediate frequency furnace rough smelts high-speed steel to improve alloy recovery rates and reduce oxygen content in molten steel.

Primary energy melting in a shaft furnace reduces electrical load on the electric arc furnace, lowering operational costs and extending refractory lifespan.

Recycles high carbon ferromanganese slag with low carbon silicomanganese to produce ultra low phosphorus and carbon ferromanganese alloy.

Magnetic separation recovers trapped iron from waste slag, resolving low concentration issues and creating uniform aggregate.

High basicity slag removes oxygen and Ds inclusions without calcium treatment, stabilizing casting and improving erosion resistance.

Parallel direct reduction furnaces produce ferrochrome and ferronickel intermediates for stainless steel manufacturing.

Metallic aluminum and calcium oxide modify molten steel chemistry to enable nitrogen extraction through controlled aluminum nitride formation.