Hot-Dipping/Immersion Processes TRIZ Cases

Bottom ventilation nozzles accelerate cooling by eliminating counter-current airflow, while suctioning ducts capture overheated polluted air.

Decarburizing the surface of galvanized steel sheets reduces liquid metal embrittlement and microcrack formation during spot welding.

Pickling removes chromium oxide from non-magnetic stainless steel wire, enabling strong zinc adhesion for submarine cable armouring.

A steel sheet with strain-induced transformation composite structure balances strength and elongation through controlled microstructural phase distribution.

A continuous annealing process stabilizes hardness in hot stamped steel sheets by controlling heating and cooling rates.

A Zn-Al-Mg alloy hot-dip plated steel sheet with dispersed Ti-containing precipitates strengthens the base matrix.

Optimized Al-Zn plating microstructures suppress powdering and mold seizing while maintaining corrosion resistance.

A hot-dip galvanized steel sheet achieves high strength through a multi-phase microstructure containing ferrite, bainite, martensite, and retained austenite.

Offset slotted nozzles create dense gas curtains that prevent zinc vapor backflow and maintain product quality in continuous strip galvanizing lines.

An internal oxide layer inside the high-manganese steel prevents selective oxidation of alloying elements, eliminating coating peeling during galvanizing.

A gas wiping nozzle uses a ceramic or carbon shim fitted into groove portions to maintain uniform slit gaps between facing nozzle members.

A measurement device calculates oxide layer thickness by dividing the range into sub-ranges with specific emissivity conversion data.

A fine ferrite grain layer with low manganese content forms on the steel substrate surface to enhance coating adhesion.

A hot dip aluminum plating layer on steel substrate uses irregular tau phase dispersion to reduce hardness difference between alloy and diffusion layers.

Reactive functional groups in the fluororesin form chemical bonds with the plating layer, eliminating the primer layer and reducing production steps.

Segmented gas discharge channels suppress turbulence and resonance to prevent uneven coating thickness in hot dip processes.

Adding lanthanum to zinc coatings prevents microcracking during press hardening while maintaining corrosion resistance.

A high-strength cold-rolled steel sheet uses a ferrite, martensite, and retained austenite microstructure to balance tensile strength with total elongation.

A snout runoff chamber with a suction pump removes molten metal and slag from the coating bath.

Twin-roll casting with gas atomization cooling yields high-strength steel while eliminating long process flows and reducing energy consumption.

A multi-layer plating structure combines Fe-Si alloy sacrificial protection with a ZnO surface to overcome bare corrosion trade-offs.

A steel strip with a hot dip zinc coating achieves high strength and formability through precise chemical composition control.

Microvibration expands surface lattice spacing, accelerating hydrogen desorption without altering mechanical properties.

A high-strength steel sheet stabilizes retained austenite through precise chemical composition and heat treatment parameters.

A Zn-Al-Mg alloy coating reduces liquid metal embrittlement and blowhole formation by limiting zinc thermal evaporation during welding.

Alternate Mn and Al plating layers on a steel sheet create a thin surface oxide that enables high spot weldability while maintaining corrosion resistance.

Composite microstructure resolves the contradiction between yield strength and elongation in aluminum-zinc coated steel plates.

Nitrogen atmosphere processing reduces hydrogen content in zinc-coated steel, preventing liquid metal embrittlement and improving bendability.

An Fe2Al5 intermediate layer prevents iron diffusion to reduce Tannenbaum surface defects while maintaining corrosion resistance.

A galvannealed steel sheet uses controlled ferrite and tempered martensite phases to achieve high tensile strength.

A high-strength steel sheet achieves 1,180 MPa tensile strength through a composite microstructure of martensite and tempered martensite.

Low-temperature flattening annealing with controlled tension prevents film cracking while thermal strain correction reduces transformer noise.

Controlled silicon and aluminum content maintains surface purity during acid pickling, resolving the trade-off between mass reduction and corrosion resistance.

Optimized austenitic steel sheet balances yield ratio and ductility, reducing vehicle weight while maintaining structural rigidity.

Controlled drying prevents zinc hydroxysulphate formation, resolving poor adhesion in automotive metal sheet processing.

A ceramic roller bearing design with axially displaced cylindrical rollers and a convex central ring.

Membrane-based humidity control stabilizes dew point in reducing furnaces, preventing surface oxidation of Si-added steel sheets during galvanizing.

Composite microstructure with ferrite, martensite, and retained austenite improves burring properties while maintaining high tensile strength.

Precise chemical composition and microstructure control suppress plating streaks, prevent die sticking, and enhance press-forming shapeability.

Controlling cooling water pH above 5.5 reduces Al-Zn-Si-Mg coating dissolution, preventing precipitate formation that deteriorates heat exchangers.

Vacuum purge means evacuates fluid from spray heads to prevent molten metal splashes during maintenance.

Continuous quenching and partitioning annealing produces a bainite-martensite microstructure in cold rolled steel plates.

A galvannealed steel sheet features a composite oxide layer of manganese, zinc, and phosphorus to enhance deep drawability.

Oxidation pretreatment on aluminum-silicon layers reduces abrasive tool wear and prevents edge corrosion in press hardening.

A cold-rolled steel sheet with a segmented microstructure combines martensite, bainite, and retained austenite to enhance mechanical properties.

A high strength steel sheet with controlled ferrite and second phase microstructures.

Chemical removal of insulating coating via dicarboxylic acid enables reliable solder plating without mechanical stress or expensive laser equipment.

Alloying zinc with manganese, cobalt, or iron prevents liquid metal induced cracks during welding while maintaining corrosion resistance.