Hot-Dipping/Immersion Processes TRIZ Cases

An AlSi-based diffusion layer protects brake disc friction surfaces from wear and corrosion without coatings that rub off during braking.

SnZn outer layers block phosphorus diffusion in CuP brazing sheets, suppress brittle phases, and improve steel joint strength and toughness.

Nitrogen segregation and controlled AlN density help 1300 MPa martensitic steel resist zinc-induced LME during spot welding while retaining bendability.

Controlled martensite chemistry and microstructure raise press-hardened part strength while preserving ductility, bending, and weldability.

Controlled FeAl, Fe2Al5, and Zn layers limit LME and microcracks while improving post-coating corrosion resistance with zirconium treatment.

Partial precoating removal limits weld-joint aluminum, enabling full press-hardening and crashworthy laser-welded steel parts.

A 0.5-6.0 µm Ni or Ni-alloy coating supports high-speed heating while limiting liquid metal embrittlement cracking and preserving paint adhesion.

Controlled martensite tempering and Mn interface segregation help galvanized steel keep press formability and low-temperature toughness at 980 MPa.

Controlled Al-Fe-Si and Al layer thickness in welded steel pipe suppresses scale during hot forming, improving corrosion resistance and productivity.

An Fe-based electroplating layer above 20 g/m2 helps galvanized steel resist LME cracking by reducing welding stress and delaying zinc penetration.

A controlled Γ phase and coarse oxides near the pressure weld improve spot-weld corrosion resistance in Zn-plated steel members.

Limiting Zn in a Ni-based hot-press coating suppresses scale, avoids furnace metal adhesion, and prevents liquid metal embrittlement cracking.

An Sb-rich interfacial layer in Al-plated hot-forming steel lowers diffusible hydrogen, improving delayed fracture and impact resistance.

Controlled low-Si, low-CE multiphase steel balances GPa strength, hole expansion, weldability, and surface quality for chassis parts.

Controlled Zn-Al-Mg coating and reheating conditions limit grain boundary penetration and micro-cracks in hot press formed steel.

Cold-formed boron steel cuts scrap and case weight while withstanding 120 ksi pressure for higher propellant capacity.

Mn-enriched retained austenite and controlled ferrite-martensite balance help steel sheet reach 980 MPa strength while preserving formability.

A softened steel surface layer with controlled solid-solution Mn preserves nut weld peeling strength while improving delayed fracture resistance.

Controlled phase fractions and annealing-cooling steps help galvanized steel sheet reach 850 MPa yield strength while preserving elongation and hole expansion.

Fine, uniform former austenite grains and controlled hardness distribution help hot-stamped steel resist hydrogen embrittlement without losing strength.

Controlling annealing time and furnace moisture builds a decarburization layer that suppresses weld LME in ultra-high strength galvanized steel.

Controlled phase balance and surface Si distribution help cold-rolled steel keep high strength, ductility, hole expandability, and weldability.

Multistage heating and Ac3-910°C soaking improve hot-stamped plated steel bending toughness without costly alloy changes.

Multistage heating and controlled soaking improve hot-stamped plated steel toughness and bending without added alloy cost.

Controlled plating composition and grain size improve coating adhesion and post-coating corrosion resistance in hot-stamped steel members.

Grain-size control in a ≤30 μm iron-alloy mask plate improves strength and weldability, helping prevent plastic deformation in use.

Reference marks on the strip calibrate tracking after cutting, enabling accurate defect mark reprinting across metal processing lines.

A Zn-Mg-Si-Al-Sr plated layer blocks oxidation during hot stamping while improving corrosion resistance and complex-shape formability.

Controlled alloying and martensite plus self-tempered martensite improve press-hardened steel strength, ductility, and weldability.

Fine (Fe,Mn)2B precipitates near the steel surface speed boron grain-boundary segregation during spot welding to suppress zinc-induced LME cracking.

A layered multi-electrode sensor structure enables multi-axis bending to reduce mechanical complications and extend continuous glucose monitoring.

Controlling crystal grain area in a 30 μm or thinner alloy plate boosts mask strength and weldability while limiting plastic deformation.

Controlled MnS and BN precipitates improve cold-rolled steel sheet formability, strength, and surface quality while reducing cracks and distortion.

Ni surface diffusion and granular carbide trapping let hot-pressed steel reach 1850 MPa while improving delayed fracture resistance, including weld zones.

Controlled surface texture and nanoscale Ti precipitates help hot-rolled steel reach 980 MPa while suppressing bend cracks and preserving flangeability.

Grain-refined A-group particles in the surface film improve coating adhesion, chemical convertibility, and corrosion resistance after hot stamping.

Controlled steel chemistry and martensitic microstructure keep plated hot-pressed sheets smooth for strong nut projection bonding.

Metal Zn phases retained in the plating near the weld toe improve sacrificial corrosion resistance while limiting welding blowholes.

A Zn-Al intermetallic coating with a Zn-containing oxide layer improves cut-edge corrosion resistance while preserving coated surface appearance.

A selective absorption layer on thicker coated steel regions improves infrared heating uniformity and keeps diffusion, weldability, and corrosion resistance consistent.

Neural network prediction sets air knife gap and pressure in advance to improve strip coating weight accuracy and surface quality.

A Ni-Zn plated surface and tailored martensite-bainite layer let hot-stamped steel keep high strength while improving bendability and embrittlement resistance.

Retained austenite, controlled cementite, and surface decarburization help press-hardened steel keep crash ductility, weldability, and oxidation resistance.

A hydrogen barrier layer and slow batch-anneal cooling suppress hydrogen uptake in pre-alloyed steel sheets, improving delayed fracture resistance.

Multiple sensor elements tuned to different concentration ranges maintain accurate continuous analyte measurement across low and high glucose levels.

Controlled annealing, cold rolling, and Al-alloyed steel chemistry enable spot welds above 1000 MPa with low phosphorus segregation and good ductility.

A thin nickel pre-coat diffuses during annealing to block zinc penetration, reducing LME cracks while preserving weldability and strength.

Controlled ferrite, fresh martensite, and retained γ improve spot-weld fatigue strength after forming while maintaining 550 MPa yield strength.

Controlled preheating and rolling of high-manganese steel limits work hardening, preserves TRIP/TWIP formability, and reduces annealing needs.

A pseudo-deterministic metal surface texture with MZNAC 0.2-0.8 suppresses moiré patterns while preserving paint adhesion and waviness.