Hot galvanizing method capable of obtaining grass green coating on profile steel
A grass-green, hot-dip galvanizing technology, applied in metal material coating process, coating, hot-dip plating process, etc., can solve the problems of difficult to obtain grass-green coating, high color temperature range requirements, uneven color of color coating, etc. To achieve the effect of easy control of process parameters, wide process window and excellent surface finish
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[0065] Example 1
[0066] Perform color hot-dip plating process on angle steel with a thickness of 1mm. The size of the angle steel is L40×70mm. First, prepare a special color hot-dip galvanizing bath, then pretreat the surface of the plated parts, and finally perform the hot-dip plating operation. The specific operation steps are as follows :
[0067] Step 1. Prepare the plating solution
[0068] (1) After melting the zinc ingot, add the pre-prepared master alloy.
[0069] (2) Make the zinc liquid element ratio meet 98.8% Zn content, 1% Mn content, 0.1% Y content, 0.05% Ce content, and 0.05% Cu content.
[0070] Step 2, surface pretreatment of plated parts
[0071] (1) Soak the plated parts at 50° C., soak in 6 wt.% NaOH solution for 30 minutes for alkaline washing and degreasing, take it out after soaking, and wash with clear water.
[0072] (2) Soak the plated parts in a 15% hydrochloric acid solution at room temperature for 30 minutes for pickling, take it out after soaking, and wash...
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[0087] Example 2
[0088] Perform color hot-dip plating process on angle steel with a thickness of 10mm. The size of the angle steel is L45×50mm. First, prepare a special color hot-dip galvanizing bath, pretreat the surface of the plated parts, and finally perform the hot-dip plating operation. The specific operation steps are as follows :
[0089] Step 1. Prepare the plating solution
[0090] (1) After melting the zinc ingot, add the pre-prepared master alloy.
[0091] (2) Make the zinc liquid element ratio meet 99.4% Zn content, 0.5% Mn content, 0.05% Y content, 0% Ce content, and 0.05% Cu content.
[0092] Step 2, surface pretreatment of plated parts
[0093] (1) Soak the plated parts at 70°C, soak in a 6wt.% NaOH solution for 30 minutes for alkaline washing and degreasing, take it out after soaking, and wash with clear water.
[0094] (2) Soak the plated parts in a 20% hydrochloric acid solution at room temperature for 30 minutes for pickling, take it out after soaking, and wash with...
Example Embodiment
[0108] Example 3
[0109] Color hot-dip plating process is performed on angle steel with a thickness of 20mm. The size of the angle steel is L100×100mm. First, prepare a special color hot-dip galvanizing bath, pretreat the surface of the plated parts, and finally perform hot-dip plating. The specific operation steps are as follows:
[0110] Step 1. Prepare the plating solution
[0111] (1) After melting the zinc ingot, add the pre-prepared master alloy.
[0112] (2) Make the zinc liquid element ratio meet the requirements of Zn content 99.85%, Mn content 0.1%, Y content 0%, Ce content 0.04%, and Cu content 0.01%.
[0113] Step 2, surface pretreatment of plated parts
[0114] (1) Soak the plated parts at 60° C., soak in a 6 wt.% NaOH solution for 30 minutes for alkaline washing and degreasing, take it out after soaking, and wash with clear water.
[0115] (2) Soak the plated parts in 18% hydrochloric acid solution at room temperature for 30 minutes for pickling, take it out after soaking, ...
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