Hot-Dipping/Immersion Processes TRIZ Cases

Controlled alloying and low diffusible hydrogen help high-strength galvanized steel resist nugget-edge cracking during spot welding.

An Fe-based electroplating layer with controlled annealing forms internal oxides that limit zinc penetration and reduce LME cracking in resistance welding.

Controlled Si/Mn composition and near-surface microstructure improve weld fatigue and resist liquid metal embrittlement in high-strength steel sheets.

Controlled bainitic ferrite, martensite, and retained austenite balance raises tensile strength while preserving elongation and hole expansion.

Partial aluminum coating removal enables laser-welded press hardened steel blanks with corrosion resistance, ductility, and low-aluminum weld metal.

A nickel-enriched surface layer blocks hydrogen diffusion in press hardened steel sheet, enabling over 1800 MPa strength with less delayed cracking.

Higher skin-pass rolling creates zinc-grain microfractures that raise surface area and improve phosphating, forming, and paint finish.

Controlling Fe-Al and Mg-Zn phase formation in plated steel welds helps prevent LME cracks while preserving red rust resistance.

An Fe-based electroplating layer with controlled oxidation and grain refinement delays zinc penetration and suppresses welding cracks in Si steel.

Controlled Mn-Cr-Ti chemistry and cooling create ferrite-lower bainite steel that balances strength, elongation, hole expansion, and bendability.

Controlled Mn-rich retained austenite and fine cementite help press-hardened steel reach high strength, crash ductility, and weldability.

A pierced edge structure with controlled fracture and shearing ratios lowers shear stress and helps prevent hydrogen embrittlement.

Controlling zinc plating thickness and hydrogen permeation helps hot stamped steel resist embrittlement while retaining ultra-high strength.

Controlling Mn segregation and phase balance helps 980 MPa steel sheet retain formability while improving welded joint strength.

A dual-layer aluminum coating with controlled interdiffusion and crack density balances spot weldability with strong paint adhesion.

A layered aluminum coating with controlled interdiffusion thickness and crack density balances spot weldability with strong paint adhesion.

An oxide-controlled Zn-Al-Mg plating suppresses LME cracking and blowholes during welding while preserving corrosion resistance.

Thermal bonding keeps joint aluminum below 0.5 wt% to limit segregation, avoid hardness loss, and preserve hot-stamping strength.

Controlled shear-surface ratios and an interdiffusion-plating structure help pierced hot-stamped parts resist hydrogen embrittlement.

A thin hydrogen barrier coating on tailored rolled blanks limits hydrogen uptake during austenitization and improves delayed fracture resistance.

Applying KOH or LiOH to galvanized steel before hardening suppresses oxide layers, avoiding mechanical cleaning while preserving accuracy.

A carbide-forming filler wire enables welding of aluminum-coated press-hardening blanks without coating removal, preserving corrosion protection.

Aerodynamic airlocks, hot gas flow, and rapid liquid cooling keep a downward coated strip isolated, dry, and free from contact damage.

Controlled phase transformation and tempering create a mixed microstructure that raises steel sheet strength while preserving ductility and hole expansion.

Controlled Zn-based oxide size and coverage improve chemical convertibility while helping hot stamped steel resist LME during spot welding.

A zinc-containing plating layer suppresses hydrogen embrittlement in hot stamped steel while preserving ultra-high strength through controlled thickness and permeation.

Laser-structured skin-pass rolls create repeating surface depressions that cut abrasion and adhesion during forming of coated flat metal products.

A deterministic die-element layout on skin-pass rolls improves embossment uniformity, microscopy assessment, and coating-substrate adhesion.

Controlled dew point decarburization creates a low-carbon surface zone that improves hot-stamped toughness while preserving VDA peak force.

A low-nickel steel base layer with carbide coating cuts nickel release while improving brake disc wear resistance, oxidation protection, and adhesion.

A Zn-Si-Al coating composition suppresses liquid metal embrittlement during hot forming while preserving corrosion resistance and productivity.

Controlled Ti-V alloying and cooling create hot-rolled ferritic steel with high strength, formability, and hole expansion for automotive parts.

A three-layer hardness gradient in high-strength steel sheet reduces surface strain and suppresses LME cracks during spot welding.

Controlled phase balance and surface crystal orientation reduce recessed forming damage while preserving fatigue strength in high-strength hot-rolled steel.

A controlled ferrite interdiffusion layer helps coated press-hardened steel keep corrosion resistance while reaching high strength and bendability.

A decarburized ferrite surface layer and controlled hot forming help coated steel reach 1350 MPa strength while keeping bendability and coatability.

A Zn-Si-Al coating composition enables hot-formed steel parts to avoid liquid metal embrittlement while retaining corrosion resistance and hardness.

A reel-to-reel meniscus coating process with thickness control cuts batch variation and cost in implantable continuous analyte sensor production.

Controlled residual austenite and grain boundary ratios help hot-stamped steel keep formability while improving strength and hydrogen embrittlement resistance.

An Al-Fe intermetallic coating and diffusion layer limit hydrogen entry and speed release in hot-pressed steel, improving delayed fracture resistance.

A layered Al film with Fe-Al-Si and oxide phases limits hydrogen absorption during hot stamping, improving delayed-fracture resistance.

Controlled alloying and microstructure enable press-hardened steel parts to combine high strength, crash ductility, weldability, and corrosion resistance.

Thick aluminum precoating and hot-forming diffusion preserve corrosion protection in flexibly rolled hardened steel with variable thickness.

A carbon-based black coating helps overlapped Al-plated hot-stamping blanks heat faster and more uniformly without sacrificing spot weldability.

Controlled heating of overlapped Al-plated steel sheets equalizes temperatures, reducing warpage while preserving corrosion resistance.

A dual-layer aluminum alloy coating balances paint adhesion and spot weldability in hot-stamped steel by controlling interdiffusion and crack density.

A retained-austenite steel composition balances press-hardened strength, crash ductility, and weld-zone resistance to softening.

Controlled heating and hot stamping create Fe2Al5 and FeAl layers with tuned roughness, improving paint adhesion and corrosion resistance.

Mn-Si-Cr-Mo alloy control and low coarse-carbide density improve hardenability, uniformity, and crash energy absorption in hot-formed steel.

A layered coated steel sheet uses controlled ferrite and martensite zones to keep corrosion resistance while improving press-hardened part bendability.