Hot-Dipping/Immersion Processes TRIZ Cases

A coating weight control apparatus estimates strip passing position changes to adjust nozzle positions for balanced coating.

Optimizing gas knife distance and alloy composition eliminates beach defects in Zn-Al-Mg coatings while preserving corrosion resistance.

Ti and Nb additions prevent Si, Mn, Al oxidation during annealing to eliminate bare spots and improve plating adhesion on 1000 MPa steel.

Ferrite matrix with dispersed martensite particles reduces yield ratio below 0.6 while maintaining tensile strength above 490 MPa for automotive panels.

Movable cleaning tips adjust position via elastic force to resolve the contradiction between gas jetting pressure uniformity and cleaning tip contact accuracy.

Direct oxidant injection into sedimentation tank flux jet eliminates external mixers and prevents clumping during de-ironing.

An internal oxidation layer on the steel sheet suppresses liquid metal embrittlement cracking during spot welding while maintaining hole expansibility.

Optimized steel strip composition with boron and vanadium enhances mechanical strength and weldability.

Galvanized steel sheet with controlled martensite and bainite phases resolves hydrogen embrittlement while maintaining corrosion resistance.

Zinc-aluminum-magnesium alloy coating on steel interfaces with aluminum elements to form a durable structural bond.

A cold-rolled steel sheet with a martensite and bainite microstructure achieves high tensile strength.

A steel sheet composition and microstructure control antimony segregation at grain boundaries to enhance bake hardening properties.

A meniscus coating apparatus uses physical or pressurized gas barriers to maintain a protective atmosphere around the metal strip during deposition.

Optimized alloy composition and phase fractions resolve the trade-off between tensile strength and in-plane uniformity for automotive applications.

Heating steel to the austenite region while controlling hydrogen levels prevents embrittlement during rapid cooling.

Interstitial free ferritic steel with tailored chemical composition achieves high strength and excellent formability.

A high-strength cold-rolled steel sheet utilizes a multi-phase microstructure of ferrite, martensite, and retained austenite to achieve superior mechanical properties.

Reducing silicon to 0.105% in a ferrite-martensite composite structure resolves the trade-off between tensile strength and paintability.

A post-treatment coating on zinc-plated steel sheets enhances lubricity and weldability through controlled oxygen-to-metal atomic ratios.

A copper alloy wire containing indium and tin achieves high tensile strength through solid solution strengthening and precipitation hardening mechanisms.

A high-strength steel sheet uses a multi-phase microstructure to balance tensile strength and ductility.

Optimized microstructure with 3% retained austenite ensures isotropic bake hardenability while maintaining weldability.

Positions electromagnetic stabilizer closer to blow-off slot to lower energy consumption and improve operator access during metal strip coating.

A ceramic fiber coating device adjusts immersion depth to maintain uniform metal layer thickness during continuous processing.

Decarburization creates a low carbon zone that reduces metal affected zone depth, preventing micro-crack formation during forming.

Reheating a zinc coated steel blank to austenitizing temperature prevents surface cracking while achieving high strength.

Laser irradiation introduces controlled thermal strain to refine magnetic domains, reducing iron loss without increasing magnetostriction noise.

A double-annealed steel sheet achieves high strength and ductility through a specific multi-phase microstructure.

Segmented gas discharge bars form a localized nitrogen cloud that prevents oxidation while reducing heat deformation and nitrogen consumption.

A pressure response compensation unit determines gap ratios based on control periods, resolving delays in air knife pressure adjustments.

Inert gas pressurized supply guide maintains uniform Al concentration in the molten zinc bath, reducing bottom dross generation.

A movable wiping system with vertically adjustable nozzles and a segmented confinement box controls gas flow dynamics during hot dip coating.

Grinding metal powders into a liquid suspension allows homogeneous coating inside complex cavities, avoiding rapid depletion of reactive species.

Segmenting the ingot via a through-hole accelerates melting rate and reduces dross formation, maintaining coating line productivity.

Hot dip galvanized steel strip with controlled retained austenite and bainite phases for high strength and formability.

Modified aqueous flux containing bismuth and copper salts prevents aluminum oxide formation during hot-dip galvanizing.

Forming a protective iron oxide layer before immersion prevents harmful manganese and silicon oxides, ensuring high-quality coatings for continuous production.

Segmenting a TRIP steel core with a low-carbon decarburized layer prevents zinc-induced cracking while maintaining structural strength.

Controlled dual-phase microstructure reduces directional anisotropy in high-strength steel sheets, enhancing formability.

A galvanized steel sheet uses a tempered martensitic and bainitic microstructure to enhance formability.

Vacuum-deposited aluminum oxide on zinc-magnesium coatings prevents cosmetic surface corrosion during storage while maintaining phosphating compatibility.

Humidified gas supply ports in the soaking zone promote Si internal oxidation, preventing pick-up defects and improving coating adhesion for high silicon steel.

Segmenting the adjustment into two rotational axes reduces deflection amplitude while maintaining positioning precision and a clean liquid seal.

An aluminum-zinc-silicon coating prevents microcracks during press hardening while maintaining sacrificial cathodic protection.

Controlled cooling forms fine Al-Si phases in the plating layer, preventing brittle intermetallic separation during hot press forming.

An Al-Fe inhibition layer at the interface manages iron diffusion to resolve plating adhesion versus friction trade-offs.

Precise dew point control during annealing reduces coating porosity, resolving weldability and adhesion bottlenecks.

A steel sheet composition with niobium achieves uniform tensile strength across formed parts independent of cooling rates.

Pickling removes surface oxides before re-annealing, allowing manganese oxide roughening to improve coating adhesion without costly facility upgrades.