Hot-Dipping/Immersion Processes TRIZ Cases

Controlled gas cooling at 2–15°C/s hardens UHSS sheets while preserving flatness for continuous hot dip galvanizing.

This case uses a controlled internal oxidized layer to reduce welding microcracks and LME while preserving zinc plating quality.

This one-piece composite liner uses a thin refractory layer and low-cost backing to resist wear, oxidation, and thermal distortion.

A compact optical probe guides laser light directly for precise molten metal analysis.

Epoxy-based paint films curb blistering and improve electrodeposition adhesion.

A Zn-rich Al coating improves phosphation, corrosion protection, and paint adhesion.

Optimized alloying and annealing create a composite microstructure that resolves the contradiction between high tensile strength and poor stretch-flangeability.

Segmented plating layers with controlled Si and Mg content improve spot welding properties while preventing hydrogen delayed fracture during hot press forming.

Boron and potassium additives stabilize fine spangle formation in aluminum coatings, preventing heavy precipitate settling during continuous production.

An acidic aqueous composition stabilizes metallic surface treatment using specific linear polymers and metal compounds.

Fe pre-plating suppresses surface oxides during annealing, improving plating adhesion and reducing non-plating defects.

Controlled heating and cooling rates during primary and secondary annealing produce high-strength galvanized steel sheets with uniform microstructures.

Controlling median grain size below 11.0 micrometers reduces delta waviness to 0.12 μm, ensuring mirror-like paint appearance on formed automotive panels.

A nozzle with a rotatable carrier plate moves suction and blowing units for maintenance access.

A galvanized steel sheet uses controlled Ti carbide precipitation to strengthen the base material while maintaining a clean surface.

A mobile carriage uses perpendicular rotation axles to guide wiping beams across three parallel tracks.

Tin-zinc plating on earth bolts improves electro-conductivity by 12-fold while maintaining corrosion resistance against engine damage.

Vanadium and niobium precipitates strengthen the ferritic matrix, resolving the contradiction between tensile strength and stretched-edge ductility.

Notched ingots increase surface area to volume ratio, accelerating melting rates and preventing dross formation at tank bottoms.

An Al-Mn based alloy phase randomly orients zinc growth in a hot-dip galvanized layer, preventing low-temperature adhesion embrittlement fractures.

Controlling annealing dew point to -40°C or lower suppresses selective Si and Mn oxide formation, ensuring uniform chemical conversion coating.

Optimizing the pressure ratio between the deposition and ejection chambers improves temporary corrosion protection for oxidizable steels.

A hot dip galvannealed steel sheet production method using controlled temperature profiles and minimal temper rolling elongation.

A high strength coated steel sheet undergoes controlled annealing, quenching, and partitioning to form a mixed microstructure.

An aluminum alloy-plated steel sheet with controlled interfacial roughness prevents microcracks during hot forming.