Hot-Dipping/Immersion Processes TRIZ Cases

See how element-concentrated regions and an Fe-Al interface alloy preserve gloss, adhesion, and corrosion resistance in patterned Zn-Al-Mg plating.

Two-step annealing creates ferrite and retained austenite in steel sheets, delivering UTS×TE above 25,000 MPa% with high formability.

Controlled annealing and cooling create low-Mn ferrite with a dual-phase microstructure, balancing 1080 MPa tensile strength with ductility and bendability.

An alloyed Al-Fe surface layer shields steel during hot press forming, helping retain strength while improving corrosion resistance and spot weldability.

Controlled alloying and ultrafine ferrite balance high strength with formability and surface quality for lighter automotive body panels.

Conventional press hardening steel can lack fracture strain; boron, Nb, and Ti refine microstructure for tougher hot stamped parts.

Annealing and heat treatment control martensite structure and dislocation density to maintain flow stress after rest.

Controlled retained austenite and multiphase structure support 980 MPa strength while improving collision fracture resistance.

Controlled composition, rolling, annealing, and cooling create a multiphase steel structure with high strength and low TS variation.

Alkaline-earth additives enable non-destructive annealing verification through coating color change.

Controlled ferrite and martensite fractions reduce longitudinal yield-strength variation in high strength automotive steel sheet.

Controlled martensite, grain-boundary misorientation, and rapid cooling improve hole expansibility and shearing workability.

This case uses layered metal construction and non-wetting behavior to protect markings from molten tin during high-temperature reflow.

Microalloy precipitates trap hydrogen in hot-forming steel to limit embrittlement.

Binder-free electrostatic layering coats steel sheets with graphene oxide for better orientation.

A uniform soft surface layer and gradual hardness transition improve bendability while retaining tensile strength of at least 800 MPa.

Controlled slurry blasting replaces pickling to prepare steel strip surfaces for more uniform, better-adhering hot-dip aluminum coatings.

Al-Fe-Mg plating improves phosphate adhesion and reduces coating defects.

This case controls the carbon gradient in a steel sheet’s decarburized layer to reduce ghost lines after press-forming.

Controlled Mn and C enrichment in retained austenite balances 980 MPa strength with ductility, flangeability, and weldability.

Controlled martensite, carbides, and inclusions improve edge cracking resistance and bendability in 1310 MPa automotive press steel.

Specific resin and inorganic compounds at controlled pH improve zinc-coated steel corrosion resistance and resin adhesion.

Controlled annealing limits oxides in galvannealed steel and improves coating adhesion.

Fine surface grains and multiphase control improve bendability and resist liquid metal embrittlement in zinc-coated, high-strength steel.

Detachable securing points let wiping and ancillary devices be repositioned or maintained independently during metal strip coating.

A Zn-Mg-Al layer with an Fe-Al inhibition layer targets corrosion, bending workability, surface quality, and welding embrittlement.

Pre-oxidation and controlled heating limit selective oxidation, preserving coating adhesion, forming properties, and surface quality.

This case uses a protective Fe oxide layer and controlled atmospheres to prevent selective oxidation and improve zinc coating adhesion.

A soaking-zone gas strategy controls Si oxidation, coating adhesion, and rapid dew-point switching across steel grades.

This case controls recovery heat treatment and coating sequence to preserve deformation twins, strength, and formability in TWIP steel.

Internal grain boundary oxides limit hydrogen penetration in high-strength galvannealed steel.

Controlled ferrite microstructure balances steel sheet formability and fracture resistance.

Jet, radiant, and induction heating combine with heat recovery and nitrogen-hydrogen gas to rapidly heat high-strength strip steel.

Power ultrasound creates cavitation in liquid metal, removing oxide layers and improving coating adhesion on aluminum wires.

A movable hot-dip plating tank and seal devices switch between plated and cold-rolled strip production while limiting gas leakage.

A pump-fed removable reservoir supports precise adjustment and matte removal while avoiding strip cutting during line maintenance.

This case shows how galvannealed zinc-aluminum coatings preserve cathodic protection and reduce micro-cracking during hot stamping.

Controlled P, Nb, and Ti additions refine ferrite grains, reducing painted surface waviness in high-strength galvanized sheet.

This case uses sequential coatings, selective masking, and PVD to create durable ombre transitions on irregular plumbing fixtures.

A composition with trivalent chromium, carboxylated vinylidene copolymer, and crosslinker forms a barrier against blackening and corrosion.

Controlled granular oxides and an Si-Mn depleted layer resist hydrogen and zinc penetration while preserving plating adhesion.

Controlled alloying, cooling, and coiling produce hot-rolled steel with ultra-high strength, flangeability, toughness, and weldability.

Martensite, retained austenite, and packet structure balance 1180 MPa strength with bendability, flatness, and embrittlement resistance.

A plasma-formed amorphous or microcrystalline interface layer blocks grain-boundary paths and reduces element diffusion beneath graphene.

Controlled Zn–Mg–Al composition, phase structure, and cooling improve sealer adhesion while preserving corrosion resistance.

A tempered-martensite structure with retained austenite balances 1,310 MPa strength, elongation, bendability, and hydrogen resistance.

A three-layer steel structure uses zinc or aluminum and an organic resin layer to improve adhesion and corrosion resistance.

This case controls internal oxide and decarburized layer ratios to preserve high strength, appearance, and galvanized sheet plateability.

A height-adjustable two-part die and controlled gas flow maintain uniform wire coatings while limiting oxidation at high speeds.

Grain size and unrecrystallized ferrite control help limit galvanized-layer voids during hot stamping and improve spot weldability.