Hot-Dipping/Immersion Processes TRIZ Cases

An Si-based post-treatment and inter-diffusion layer helps Zn-plated hot stamping steel resist oxidation and keep paintability without shot peening.

A thin Ni layer over Al-Si coating suppresses Fe and hydrogen diffusion during hot stamping, improving corrosion resistance and adhesion.

Applying controlled contact pressure during hot stamping crushes zinc-layer voids, suppressing electrode sticking while preserving high strength.

Laser welding with austenite-stabilizing filler wire limits aluminum segregation and preserves joint hardness in coated steel blanks.

By suppressing Mn-concentrated regions through heat treatment and phase control, this case improves steel sheet formability, toughness, and weldability.

Batch annealing forms an Al-Fe alloy layer that evens TWB weld hardness after hot forming without stripping the coating or losing corrosion resistance.

A MgZn2-rich boundary plating layer near the corona bond helps high-strength spot welds suppress LME cracking and improve corrosion resistance.

Controlled ferrite, fresh martensite, and retained γ improve resistance spot weld fatigue strength while maintaining 550 MPa-class steel strength.

Mg2Si and AlMgSiFe phases help aluminum-plated steel resist roller sticking and hydrogen embrittlement during rapid thermoforming.

A Cu/Cu-14P/Sn layered brazing wire enables 0.1-0.5 mm diameter with high Sn content, lowering melting temperature while reducing pores and inclusions.

Surface-concentrated Sb, Sn, or Bi in a zinc coating helps hot press-formed steel restrain microcracks and preserve corrosion resistance.

A Ni barrier over Al-Si plating blocks Fe diffusion and lowers hydrogen embrittlement risk in hot-stamped steel while preserving corrosion resistance.

Controlled Mn-Si-Al-Mo composition with quenching and partitioning delivers high-strength steel sheet with elongation, hole expansion, and weldability.

Controlled Nb and Ti carbonitride precipitation traps hydrogen in 1310 MPa steel sheets, preserving delayed fracture resistance after cold pressing.

A duplex lightweight steel core clad with ferrite carbon steel cuts density while preserving strength and preventing oxide-related plating issues.

Selective coating removal at weld edges lowers austenitization heat, improving weld microstructure, crash performance, and cost.

Deterministic surface valleys on zinc-coated sheet steel use capillary wetting to spread process media evenly and cut lubricant use during forming.

A Ni-rich plating and surface martensite-residual austenite structure help hot-stamped steel reach high strength without sacrificing bendability.

An asymmetric plating layout and boundary plating layer suppress Zn grain-boundary penetration and inhibit LME cracking in spot-welded auto members.

Ni diffusion into grain boundaries and a martensitic surface layer help hot-stamped steel keep 1500 MPa strength while resisting hydrogen embrittlement.

Production data from each flat metal product is used to set processing parameters, reducing incoming inspection delays and quality fluctuations.

A layered Al-Si alloy coating keeps hot-pressed steel surfaces softer than the die, cutting wear while preserving oxidation resistance.

A two-temperature hot tinning sequence fixes thin and skip coating on copper wire, improving heat and salt spray resistance.

Fiber laser cutting limits plating loss on complex steel panel edges, while a fluorine liquid coating restores corrosion resistance.

A thin Al-Si coating controls oxide formation and friction in hot forming, cutting tool wear without protective gas or thick zinc layers.

A Zn-Al-Mg plated layer with controlled ratios suppresses LME while preserving corrosion resistance, spot weldability, and fatigue strength.

A Zn-plated hot press-formed steel case showing how oxide-layer and retained-austenite control improve ductility, crack resistance, and weldability.

Ni-containing Fe-Zn twins at the coating interface improve hot-stamped steel adhesion and resist liquid metal embrittlement cracking.

An iron-containing conversion layer helps variable-thickness aluminum-coated blanks heat more evenly, preserving paintability and weldability.

Preheating nail heads before spraying molten zinc creates thicker, more uniform corrosion coverage with less waste than hot-dip galvanizing.

Controlled skin-pass roughness retains lubricant to prevent galling and orange peel in galvanized steel sheets for better forming and paint clarity.

A layered Zn coating with controlled oxide Zn/Al ratio suppresses cobweb-like defects in hot stamping while preserving corrosion resistance and paint adhesion.

Removing the Al-Fe intermetallic layer at the weld zone prevents ferrite formation and preserves high-strength tailor welded blanks.

A thin tin layer on galvanized steel suppresses hardening oxides, avoiding cleaning while preserving weldability and paint adhesion.

A Ni diffusion layer and low Mn segregation help hot-pressed steel sheets resist hydrogen uptake and delayed fracture after projection welding.

Controlled Fe-Al intermetallic layers and Kirkendall voids improve coating adhesion and corrosion resistance after hot stamping.

A Fe-Zn solid solution with interfacial twins improves plating adhesion and resists liquid metal embrittlement cracking in hot stamped steel.

Granular oxide surface treatment suppresses zinc oxide during hot pressing, preserving metal zinc and corrosion resistance at uncoated areas.

Aerodynamic airlocks isolate the curing zone in vertical strip coating, blocking residual vapors and protecting coating drying quality.

An Fe-Al interfacial alloy layer blocks zinc contact with base steel, preventing embrittlement and microcracking while preserving corrosion resistance.

Controlled MZNAC surface texturing suppresses moiré patterns while preserving paint properties and surface functionality on metal substrates.

Cold-formed boron steel cartridge cases use annealing, heat treatment, and tempering to withstand high pressure while reducing extraction force.

Controlled heating and oxide-layer Mn/Zn balance help Zn-plated hot press-formed steel resist crack propagation while retaining ductility.

Balanced low-carbon alloying and martensitic-bainitic control improve press-hardened part strength, ductility, weldability, and corrosion resistance.

Controlled austempering and bainite transformation improve galvanized steel toughness after plastic strain while preserving strength and formability.

Controlled Al-Fe-Si and Al layer thickness in welded pipe suppresses hot-forming scale and preserves corrosion resistance after hardening.

An acicular Al-Zn-Si-Ca phase forms a dense oxide barrier that limits LME and hydrogen penetration while preserving corrosion resistance.

Controlled oxidizing heat treatment forms stable oxides on Ni-Cr coated steel to limit hydrogen uptake and delayed cracking.

A multilayer aluminum-alloy plated steel sheet lowers surface hardness during hot pressing, reducing die wear while preserving strength.

Specific base steel roughness randomizes zinc grain orientation, improving surface appearance and low-temperature bonding brittleness.