Hot-Dipping/Immersion Processes TRIZ Cases

An Al-Fe coated steel member with enriched surface copper reduces hydrogen invasion, mitigating embrittlement cracking in high-strength automotive components.

Composite zinc and nickel interface layers prevent corrosion in harsh downhole conditions while maintaining ductility for oilfield wireline cables.

Controlled annealing atmosphere reduces diffusible hydrogen below 0.25 mass ppm, enabling high tensile strength without compromising bendability.

Controlled oxidizing treatment forms a stable oxide film on galvanized steel sheets to ensure reliable zinc coating adhesion.

Titanium carbides precipitate uniformly in ferrite to maintain yield strength within 50 MPa across the sheet width.

Separate oxidation and reduction heating zones prevent roll pickup on silicon steel while maintaining coating adhesiveness during hot-dip galvanizing.

Rapid induction heating in hydrogen-rich environments suppresses selective oxidation, ensuring clean surfaces for reliable metallic coating adhesion.

A cold rolled steel sheet achieves high formability through controlled ferrite grain aspect ratio and precise chemical composition.

A refractory bearing insert secured within an expanded metallic housing cavity maintains position during operation.

Tin enriches eutectic phases in Zn-Mg-Al coatings, resolving wettability limits while maintaining solidus temperature for durable cold-formed steel.

A steel sheet with controlled ferrite and martensite phases improves press formability.

Lifting bridges and holding mechanisms move strip heads horizontally above the pot to prevent equipment soiling during operator access.

A gas discharge path with a closing unit stabilizes furnace pressure balance during line switching, preventing steel strip quality degradation.

A monitoring unit measures the wall thickness of a hot-dip galvanizing tank during operation to detect erosion and thermal hotspots.

A high-strength steel sheet combines polygonal ferrite, martensite, and retained austenite to achieve excellent formability.

A steel sheet with controlled ferrite, bainite, and martensite phases achieves high tensile strength.

Nanometer TiO2 or CeO2 particles in the alloy matrix create a self-repairing oxide layer that resists electrochemical corrosion and scour damage.

Controlled plating composition improves adhesion durability while maintaining red rust resistance.

A high strength steel sheet with 70% martensite and retained austenite improves bendability at shear end surfaces while resisting delayed fracture.

Applying a steady magnetic field accelerates hydrogen diffusion and desorption from steel sheets during cooling.

Controlled alloying treatment achieves balanced phase structure in galvannealed steel sheets, resolving uneven appearance issues during press formability.

An Ni-Mg bonding alloy joins aluminum to non-aluminum metals through pressure welding and diffusion bonding.

Controlled cooling rates establish martensite and bainite phases, resolving the trade-off between 980 MPa tensile strength and hole expandability.

Composite coating on surface-treated metal material concentrates vanadium in low-resistance regions, resolving uneven corrosion without compromising adhesion.

Apply variable zinc coating thickness before flexible rolling to maintain uniform thermal absorption and corrosion protection across varying sheet thicknesses.

Unsaturated fatty acid film coats copper alloy plumbing surfaces, suppressing copper and zinc elution while maintaining antibacterial properties.

A bake-hardened hot-dip galvanized steel sheet achieves enhanced strength through precise alloying temperature control.

A high strength steel sheet improves bendability by using a surface soft part with ferrite and pearlite while maintaining tensile strength in the center.

Direct fired furnace uses hydrogen combustion with intermediary gas dilution to reduce fossil fuel usage and prevent oxidation.

Selective center cooling reduces surface tension differences that cause comb-pattern defects on galvanized steel edges.

A tertiary amine compound modifies the copper plating bath to enable complete electroplating deposition within fine circuit patterns.

A protective inorganic coating composition combines silicate and alkali metal oxide components with microspheres to form a durable layer on steel.

A high strength steel sheet achieves elevated Young's modulus through controlled ferrite and martensite microstructures.

A method for producing TWIP steel sheets with austenitic matrices through controlled cold rolling and annealing processes.

Rotating rollers transfer fluid from a reservoir to conductive wire, resolving throughput limits and fouling in high-speed manufacturing.

A post heat treatment reduces silicon concentration in the Al-coated steel surface layer to preserve optical reflectivity.

A hot-rolled steel sheet with controlled ferrite and bainite phases achieves high yield ratios.

A composite plating layer reduces diffusible hydrogen content to prevent delayed fracture in high-strength hot-pressed automotive components.

Annealing steel with silicon suppresses dislocation tangling, achieving yield ratios above 0.90 while lowering manufacturing costs.

Concentrating magnesium near the surface of a Zn-Al-Mg plated steel layer prevents oxide dross formation while maintaining white rust resistance.

A galvanized steel sheet with controlled tempered martensite and retained austenite microstructures.

Heating blanks between Ac1 and Ac3 before forming achieves homogeneous ferrite-martensite structures, eliminating springback issues from cold-forming.

Galvanized steel sheet achieves high strength and formability through controlled microstructure and low aluminum content.

Precise chemical composition and annealing parameters balance strength with formability, reducing expensive alloying costs while maintaining weldability.

A steel sheet with controlled residual austenite and bainite phases.

Multi-step heat treatment achieves 1100 MPa tensile strength and crash resistance by controlling hardness uniformity.

A hot-dip galvanized steel sheet features a fine-grain ferrite layer at the interface to enhance plating adhesion and appearance uniformity.

Non-parallel ironing mold clearance matches uneven plate thickness to prevent surface treatment damage and powder residue generation.