Furnace Types TRIZ Cases

Controlled pearlite refinement and staged cooling raise hot rolled steel strength while preserving ductility, hole expandability, and stampability.

A reordered carbonitriding, quenching, tempering, and nitrocarburizing sequence cuts distortion while preserving wear and corrosion resistance.

Induction and resistive heating zones replace fossil fuel burners to heat rolled products with lower energy use, cost, and emissions.

Separated conductor members form a closed induction circuit that heats only metal plate end portions, cutting power use and helping prevent edge cracking.

Controlled heating, radial forging, and hot rolling dissolve Nb compounds, improve thermoplasticity, and prevent surface cracks in small bars.

Tailored blank welding and quenching let burring and plate regions reach different hardness targets while lowering steel cost.

A tapered chamber and slit outlet accelerate air or nitrogen uniformly, avoiding Leidenfrost effects and improving long steel cooling.

Baked resist coatings on grain-oriented electrical steel balance etching resistance and alkaline removability while preventing discoloration.

Online microstructure sensing detects martensite during steel rolling, enabling cooling adjustment to preserve ductility and cut scrap.

Controlled bcc microstructure limits work hardening in thick-wall ERW steel pipe, keeping yield ratio low while maintaining −40°C toughness.

Rotating the steel sheet blank so rolling follows the blank length reduces ghost lines in thin high-strength automotive outer panels.

Controlling weld-zone dislocation density and ferrite fraction helps friction stir welded ferrite steel joints resist fracture and keep high joint efficiency.

Multiple non-contact sensors and ratio pyrometry improve shrink-fit chuck temperature measurement despite unknown emissivity.

Pre-aging metal before heated quench forming preserves strength, dimensional accuracy, and seizure resistance in lightweight parts.

Fine dispersed oxides in Nb-free TMCP steel pin austenite grains and promote IAF, preserving weld-zone toughness under high heat input.

Q&P processing stabilizes retained austenite in hot-rolled steel sheet to balance high yield strength with toughness, elongation, and formability.

Alloy balance in C, Si, Mn, and Cr helps hot-stamping steel keep hardness stable across cooling changes while preserving strength and toughness.

Controlled reheating, cooling, and tempering refine bainite in thick clad steel plate to preserve strength while improving low-temperature toughness.

Simultaneous case-hardening and ammonia nitriding raises fatigue strength in aeronautical steel parts without shot peening complexity or roughness.

Controlled quenching and partitioning create a hot-rolled steel sheet that balances high strength, ductility, and hole expansion with fewer process steps.

A martensite-ferrite-austenite pipe composition balances high yield stress with low-temperature toughness and corrosion resistance in CO2, SSC, and acid environments.

Controlled Cu enrichment near the steel surface suppresses pitting, helping ultra-high-strength steel retain toughness and resist hydrogen embrittlement.

Low-carbon V micro-alloying, Cr-controlled cooling, and staged dephosphorization help H-shaped steel reach 420 MPa with low-temperature toughness.

Multi-step forging and normalizing compress central pores in thick flange steel, improving internal soundness, strength, and low-temperature toughness.

Solid-liquid composite casting with a zinc interlayer raises Mg alloy bar modulus while preserving plasticity and manufacturability.

A multiphase steel sheet uses retained austenite and tempered martensite to balance tensile strength, ductility, hole expansion, and bending.

Partial cold forming hardens the strip steel knife edge without thermal treatment, improving wear resistance while preserving strip body ductility.

Controlled rolling and cooling refine bainite grain structure to balance sour resistance with low-temperature toughness in line pipe steel.

Controlled surface microstructure and hardness help welded steel pipe resist SSC and HIC while maintaining high yield strength in H2S service.

Continuous induction heating between rolling units keeps wire rod ductile, cutting passes, annealing, and lubricant contamination.

Using (Nb,Ti)CN precipitates as grain-growth inhibitors helps grain-oriented electrical steel maintain Goss texture, lower core loss, and avoid high-temperature furnace damage.

Multiple angled pyrometers measure shrink chuck shell temperature contactlessly and compensate for emissivity differences during heat treatment.

A pre-formed larger hole guides hot cutting of a smaller opening through a reinforced double layer, reducing burrs, wear, and precision loss.

Controlled ferrite-MA microstructure and low skin-layer oxides help press hardened steel resist bending cracks while keeping ≥1800 MPa strength.

A decarburized surface layer and stepwise annealing-cooling route help ultra-high strength steel keep bendability, shape quality, and cold stamping processability.

A pre-formed larger opening guides hot cutting of a smaller hole in a double-layer steel component, improving edge precision and reducing burrs.

Low-cost alloying with boron, titanium, and niobium enables cold-workable steel with uniform microstructure, hardness, and impact toughness.

Optimized Mn, Nb, Al, and B chemistry with two-stage air cooling delivers a drilling pipe with high strength, toughness, and low residual stress.

Downward-inclined coolant jets in a vertical strip cooling tank improve widthwise temperature uniformity and reduce flatness defects.

Two-stage accelerated cooling controls surface and core microstructure in thick hot-rolled steel sheet to improve SSC resistance in ERW pipe.

Balanced Cr-Ni-N duplex welding filler limits nitrogen loss and intermetallic phases to keep multipass joints strong and tough.

Controlled steel composition, tempered martensite, and small inclusions raise fuel pipe pressure capacity while improving ultra-high cycle fatigue.

A tempered martensite, bainite, retained austenite, and ferrite mix helps steel sheet keep high strength while improving bending and hole expansion.

Pre-formed Ti, Nb, and V precipitates pin grain boundaries, boosting boiler alloy creep strength while resisting stress relaxation cracking.

Residual-heat online quenching and tailored rare-earth steel chemistry cut energy use while limiting quench cracking in petroleum casing.

Controlled C, Cr, Sn, and Sb contents form 5-50 nm precipitates during rolling, maintaining magnetic stability without hot-band annealing.

Circumferential hardness variation and shot peening balance residual stress to improve coil spring settling and corrosion fatigue resistance.

Controlled S, Mn, Ca, Ti, and Al levels shape MnS and ferrite-pearlite structure to improve hot-forging machinability without sacrificing impact toughness.

Controlled alloy composition and thickness-based cooling create uniform ferrite-bainite steel plate microstructures that resist cracking after cold forming.

Using the coil's apparent radial elastic modulus, this case sets tension patterns that prevent steel sheet kinking and collapse across varying sheet types.

Tempered bainite and martensite microstructure in steel plates maintains tensile strength above 600 MPa.

Normalizing and annealing a case hardening steel tube controls hardness to improve workability while preventing coarse grain formation during carburizing.

Repeated heating and rapid cooling cycles convert tensile residual stress to compressive stress in austenitic stainless steel pipes.

Segmented cooling in a continuous annealing furnace prevents wave formation and material deviations while achieving 1700 MPa tensile strength.

Precise nitrogen and zirconium ratios prevent welding blowholes while maintaining high yield strength and corrosion resistance.

Differential cooling rates across the plate thickness prevent uneven hardness distribution while maintaining high tensile strength.

Segmented internal and external air quench devices create counter-current flow patterns to resolve uneven cooling rates between interior and exterior surfaces.

High cold rolling reduction of hot strips achieves optimal crystalline structure for magnetic steel production.

Independent control channels compensate for resistance variations and position-dependent heat loss, ensuring uniform temperature distribution.

A copper alloy with controlled zinc, nickel, and tin content achieves high strength and conductivity.

A steel alloy slab casting method achieves tailored mechanical properties through precise chemical composition control.

Pre-hardened aluminum alloy sheets utilize GPII zones to enable plastic forming without subsequent artificial aging.