Hot-Dipping/Immersion Processes TRIZ Cases

Controlled aluminum in the zinc precoat yields a dense Fe/Zn compound that resists surface crazing and reduces roughness.

Hot-dip galvanized steel uses controlled phase orientation to improve corrosion resistance under running water while preventing powdering during press forming.

A plasma galvanization plant synchronizes power supply with substrate presence to maintain uniform zinc coating.

A gas injector with multiple outlets controls steel strip temperature in a vertical annealing furnace.

Applying an amino acid layer on zinc-coated steel maintains tribological properties after thermal degassing, preventing hydrogen-induced fragilization.

Fine Ti-containing carbides precipitate in the ferrite matrix, resolving the trade-off between high tensile strength and stretch flange formability.

A steel sheet coated with an aluminum-zinc-silicon alloy undergoes hot forming and phosphating to achieve high phosphate crystal coverage.

Optimized chemical composition and cooling rates reduce in-plane anisotropies while maintaining tensile strength above 980 MPa.

A hot-pressed steel sheet member achieves high tensile strength through controlled solute carbon precipitation and niobium carbide formation.

A high-strength galvanized steel sheet achieves tensile strength ≥980 MPa through controlled ferrite phase volume fraction and grain diameter.

A high-strength cold-rolled steel sheet with controlled martensite and bainite microstructures resolves the yield ratio versus bendability trade-off.

A measuring light source and sensor unit positioned at an angle to a diffuse target surface classifies direct or reflected readings.

A cooling chamber uses ionic wind and solution spray to solidify galvanized layers on steel sheets.

A hot-dip galvanized steel sheet uses controlled heat treatment atmospheres to manage surface chemistry during alloying.

A steel sheet with controlled ferrite and martensite phases achieves high tensile strength.

A steel sheet with controlled ferrite and martensite phases achieves high tensile strength.

A hot-dip galvanized steel sheet incorporates a ζ phase layer with controlled oxide inclusions to enhance plating adhesion.

Textured rolling compresses the zinc coating to form a uniform polished surface, avoiding abrasive removal that compromises corrosion resistance.

Upstream electromagnetic coils dampen strip movements before wiping nozzles to maintain coating uniformity.

A cooling rate determining device calculates average cooling rates to control solidification of hot-dip coated steel sheets.

Aluminum, magnesium, and silicon alloying in zinc-iron coatings resolves thickness non-uniformity to ensure complete surface coverage.

A cold-rolled steel sheet balances tensile strength with elongation through controlled ferrite, granular bainite, and martensite phases.

A high strength steel sheet achieves a Young's modulus of 205 GPa through controlled ferrite and martensite microstructure.

A cold-rolled steel sheet controls residual austenite morphology to balance tensile strength with hole expansibility and punching fatigue resistance.

Controlling the annealing furnace dew point prevents surface enrichment of oxidizable elements, maintaining coatability and joint corrosion resistance.

A high strength steel sheet uses a ferrite and hard second phase microstructure with nanoscale interface carbides to enhance material formability.

Martensite steel sheets minimize bending fractures by limiting n-ary inclusion groups to 120 per 100 cm², resolving the strength versus workability trade-off.

An electromagnetic device stabilizes ferromagnetic strips using distributed magnetic fields to minimize deformation during feeding.

A steel sheet with controlled composition and cleanliness suppresses strain-induced ferritic transformation during hot forming.

Niobium micro-alloying expands the continuous annealing process window for high-strength multi-phase steel strips.

Feedback-controlled gas temperature at the stagnation point prevents splashing and top dross defects during hot-dip metal coating.

A high strength galvanized steel sheet uses soft reduction and controlled annealing to establish a specific multi-phase microstructure.

Removing niobium from the steel composition prevents delayed recrystallization and eliminates surface scale defects during hot-rolling.

Nickel and nickel oxide coatings prevent manganese, silicon, or aluminum oxide formation on steel sheets to eliminate bare spots.

Nitrogen annealing prevents silicon and manganese oxidation, ensuring excellent wettability and adhesion of the plated layer on high-strength automotive steel.

Optimized microstructure suppresses member fracture during crash events while maintaining high energy absorption capacity.

A rotating mechanism adjusts the vertical angle of an air knife gas supply pipe.

Controlled crystal orientation pole densities in a cold-rolled steel sheet resolve the contradiction between high strength and insufficient hole expansibility.

A hot-press forming steel sheet achieves high tensile strength through a dual-phase microstructure of martensite and retained austenite.

Iron-plated layer prevents silicon and manganese diffusion during annealing, eliminating bare spots and oxide formation on hot-dip galvanized steel sheets.

Zinc phosphate crystals and Ce-based compounds form a protective film at defect sites to inhibit cathodic reactions.

A molten oxides bath heats ferrous alloy sheets via thermal conduction.

An intermediate coating layer comprising Fe, Ni, Cr and Ti enhances adhesion of the anticorrosion metallic coating.

A zinc-aluminum-magnesium coating method uses precise chemical ratios to improve steel plate formability.

Variable spray width prevents fluid collisions and vortex formation that cause steel sheet vibrations, enhancing cooling efficiency.