Hot-Dipping/Immersion Processes TRIZ Cases

A zinc-aluminum alloy coating provides sacrificial cathodic protection on steel sheets.

Martensite and bainite microstructure in high-strength steel sheet.

A hot-dip Al-Zn alloy coated steel sheet incorporates cerium to form stable corrosion products that suppress selective corrosion.

Oxide inclusions act as disposable hydrogen traps in tempered martensite steel sheets, preventing delayed fracture while maintaining high tensile strength.

A high-strength steel sheet with controlled martensite and ferrite phases achieves yield strength above 550 MPa.

A diffused Fe-Ni alloy layer blocks liquid metal embrittlement during welding, reducing cracks and enhancing mechanical properties.

Independent gas ports in each furnace zone reduce dew point quickly, preventing oxide film formation on steel strips during processing.

A high strength steel sheet uses controlled martensite and retained austenite fractions to achieve specific mechanical properties.

Controlling the annealing furnace soaking zone dew point prevents silicon surface concentration, resolving coating adhesion issues in high silicon steel.

Hot dip alloy coating layer with controlled magnesium and aluminum content enhances corrosion resistance on base steel sheets.

Controlling annealing temperature and dew point suppresses silicon and manganese oxidation, improving coating adhesion.

A zinc chloride flux composition improves surface wetting during batch hot galvanizing of ferrous metals.

Graphitization in a non-oxidizing atmosphere and particle projection treatment remove oxides without pickling, ensuring excellent plating adhesiveness.

Localized microstructural differentiation suppresses surface unevenness during forming while maintaining high strength.

Silicon/oxygen coating applied to carrying means eliminates zinc adhesion, reducing material waste and post-processing costs.

A galvanized steel sheet with a controlled surface-to-core hardness ratio below 0.95 reduces microcracking during spot welding.

A zinc alloy locking part fits into a galvanized workpiece opening, preventing galvanic corrosion and deformation under dynamic loads.

A steel sheet uses a manganese gradient to enhance bendability and plating properties.

A dual-phase steel sheet with controlled nano-hardness achieves high tensile strength and formability.

A ceramic coating prevents oxide formation on boron steel during hot forming, retaining corrosion protection and eliminating post-process surface conditioning.

Optimized steel composition balances carbon limits with manganese and chromium to maintain weldability while achieving 1450MPa tensile strength.

A galvanized steel sheet combines tempered martensite, ferrite, and retained austenite phases to achieve high strength.

A Zn-Mg galvannealed coating forms an Fe2Al5 inhibition layer to ensure adhesion and prevent iron diffusion.

A ZnAlMg coated steel sheet uses controlled skin-passing to reduce surface waviness.

Removing natural oxides and depositing transition metals forms thick doped layers that reduce furnace dwell time while maintaining corrosion resistance.

A steel sheet uses heat treatment to concentrate manganese in cementite, creating a microstructure with dispersed retained austenite.

A galvanized steel sheet with controlled manganese and aluminum content in the plating film suppresses excessive zinc oxide formation during hot forming.

A steel sheet with ferrite, martensite, and tempered martensite phases develops specific crystallographic textures through controlled rolling.

Specific alkali metal chloride ratios in the flux resolve surface tension issues, eliminating double dipping and reducing energy consumption.

Applying ultrasonic vibration to the plating bath eliminates oxide films and trapped gases, preventing pinhole defects without thermal heating.

Barium doping increases activation energy for grain boundary sliding, reducing creep rates and spalling in turbine engine thermal barrier coatings.

A chromium-free metal surface treatment agent forms a chemical conversion coating on zinc-aluminum-magnesium alloy-plated steel sheets.

Applying electrolytic coating after hot forming prevents thermal damage while auxiliary anodes ensure uniform layer thickness on complex geometries.

A steel sheet with controlled carbon in retained austenite enhances warm workability and residual ductility.

Particle-reinforced steel uses ceramic inclusions to maintain elastic modulus while lowering density.