Hot-Dipping/Immersion Processes TRIZ Cases

Balancing tensile strength and elongation requires reducing carbon content while adding microalloying elements to stabilize the equiaxed ferrite phase.

Optimized steel sheet microstructure balances tensile strength with elongation.

Tungsten carbide coatings on immersion roller journals extend service life to 15 days by resisting tribo-corrosive attack from molten aluminum.

Two-stage current application removes Al-Si plated layers before main welding, preventing one-sided nugget formation and improving weld strength.

High strength hot dip galvanized steel strip uses boron and vanadium to achieve mechanical strength.

A copper substrate coating featuring a Cu6Sn5 intermetallic phase and silver-rich precipitations reduces mechanical friction.

Preliminary hydrogen desorption prevents embrittlement in hot-formed steel sheets, maintaining mechanical integrity during martensitic phase transformation.

Electromagnetic stabilizing means hold the metallic strip position while image-reading apparatuses capture real-time surface data for automated control.

Natural convection cools metal vapors in a snout, eliminating complex blowers and reducing fumes without mechanical circulation.

A heat treatment method for high strength steel pieces using specific annealing and overaging parameters to achieve desired mechanical properties.

Microcracks in the Fe-Zn coating layer provide hydrogen desorption paths, reducing diffusible hydrogen to prevent delayed fracture in high-strength steel.

A ceramic roller sleeve protects steel journals in molten metal baths by providing a durable, non-reactive barrier against abrasion and chemical attack.

A galvannealed steel sheet features a soft interfacial layer that reduces hardness to preserve formability.

A high strength steel sheet manufacturing method uses controlled Ac1 temperature heat treatment and cold rolling to achieve superior formability.

An Al-Si-Mg coated steel sheet lowers diffusible hydrogen without dew point control, ensuring high tensile strength and post-coating corrosion resistance.

Controlling the SiC/SiO2 ratio at the steel-galvanized layer interface prevents uncoated areas caused by silicon oxidation, maintaining mechanical strength.

An internal oxidized layer containing Al and Mn oxides prevents external oxidation, resolving poor wettability in high-strength steels.

Dip-coated rare-earth plates on fire-resistant cores eliminate costly casting steps while maintaining high productivity in magnet manufacturing.

Niobium precipitation pins grain boundaries in the steel sheet, preventing stretcher strains during deep drawing operations.

An intermetallic compound layer of Fe, Al, and Zn at the interface prevents cracking during severe working processes.

A steel sheet combines ferrite, granular bainite, and tempered martensite to achieve high tensile strength.

Electromagnetic braking controls strip velocity through zinc baths to eliminate gas-induced splashing and dross formation.

Tempered martensite and lower bainite phases in a hot-rolled steel sheet maintain low-temperature toughness despite high tensile strength.

Controlled Si oxide grains in the surface layer suppress zinc penetration into austenite grain boundaries, preventing liquid metal embrittlement cracking.

Electromagnetic wiper preliminarily removes excess plating layer at steel sheet edges, reducing gas wiping load and minimizing scattered particles.

A thermal spray powder forms a protective coating on rolls using specific mole ratios of tungsten and aluminum.

Intermetallic zinc-magnesium phases in the Zn-Mg-Al coating raise nanohardness to 4 GPa, reducing tool wear and improving adhesion.

Controlled silicon and manganese oxide concentrations in the galvanized layer ensure stable phosphatability for high-strength steel sheets.

An inclined laser beam removes pre-coating layers from metal sheets, reducing ablation time and preserving intermetallic alloy layers for corrosion resistance.

Heat treating Al-Zn-Si-Mg coated strips to globularize brittle Mg2Si particles, resolving the corrosion resistance versus ductility trade-off.

Strain-assisted annealing precipitates coherent copper particles in ferrite to prevent brittle fracture during high-speed tension forming.

A vibrating plate regulates metal powder flow in a levitated molten bath, maintaining constant source height for continuous industrial wire production.

Annealing transforms austenite to ferrite, preventing liquid metal embrittlement during welding.

Annealing high strength galvanized steel at 600 to 750 C suppresses selective oxidation of silicon and manganese, improving coating appearance.

A hot dip metal plating bath roll uses vertical and horizontal grooves to channel molten metal away from the steel strip surface.

Applying hexagonal boron nitride as a non-wetting inhibitor lowers surface energy, preventing zinc adhesion and eliminating unnecessary material consumption.

Replacing zinc with a manganese alloy prevents liquid-metal embrittlement during hot forming while blocking hydrogen absorption.

A high-strength galvanized steel sheet with a specific multi-phase microstructure achieves excellent formability and shape fixability.

A welding method for zinc plated steel sheets uses variable heat input and speed to control blowhole formation.

Optimized ferrite-martensite microstructure balances tensile strength over 780 MPa with total elongation above 30%.

A high-strength galvanized steel sheet with controlled martensite and bainite phases delivers superior mechanical properties.

A chrome-free silane-based sol-gel coating provides blackening and alkali resistance to galvannealed steel without heavy metal pollution.

A zinc alloy plated steel material with a controlled ternary inhibition layer enhances surface quality and corrosion resistance.

Replacing CMR solvents with DMSO and alkanolamines eliminates toxicological harm while maintaining storage stability.

Apply a steady magnetic field to expand steel lattice spacing via magnetostriction and accelerate hydrogen desorption.

High power density thermal processing refines Al/Zn alloy coatings, resolving coarse dendritic structures that limit corrosion resistance.

A high-strength steel sheet with bainite and tempered martensite microstructures achieves superior plating wettability.

Precise oxidation atmosphere management prevents silicon dioxide formation, ensuring reliable coating adhesion on high silicon steel.

Hot-dip coating serves as recovery heat treatment for TWIP steel sheets, preventing interdiffusion damage while maintaining coating integrity.

A plated steel sheet with a controlled lamellar structure of Al-Zn and MgZn2 phases enhances post-coating corrosion resistance.