What is the function of the passivation layer on DX51D+Z steel coils?
A: The passivation layer further enhances the corrosion resistance of the zinc coating, prevents zinc oxidation, and strengthens the adhesion between the steel coil surface and subsequent coatings, facilitating subsequent spraying processes.
How to avoid scratches on DX51D+Z steel coils during processing?
A: Processing equipment must be kept clean, avoiding impurities on the roller surface; handle with care during operation to avoid collisions; applying oil to the surface can reduce friction and lower the risk of scratches.
What is the function of applying oil to DX51D+Z steel coils?
A: On one hand, it lubricates the surface, reducing frictional damage during processing and storage; on the other hand, it provides temporary rust prevention, protecting the zinc coating from corrosion in the short term.
Is DX51D+Z steel coil suitable for stamping complex parts?
A: Yes, it is. Its substrate has good cold working properties and can be adapted to various stamping processes such as blanking, drawing, and punching, making it a commonly used material for complex parts in the home appliance industry.
How to select the appropriate DX51D+Z zinc coating specification for different applications?
Answer: For indoor environments with mild corrosion, Z80-Z100 is suitable; for outdoor applications such as construction and agricultural machinery, Z150-Z200 is suitable; for highly corrosive environments or long-term outdoor use, it is recommended to choose a zinc coating specification such as Z275.