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Chromium-free passivator for aluminum alloy
Keywords: water-based epoxy resin/water-based acrylic resin/water-based polyester resin.
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Product Details
Product Introduction
WX-A509 aluminum alloy chromium-free passivator is an environmentally friendly and corrosion-resistant passivator. This product does not contain heavy metals such as chromium, lead, and cadmium, and will not cause pollution to the environment. This product is suitable for die-casting aluminum or profile aluminum, especially suitable for Huawei, ZTE and other communications equipment, with the following characteristics:
- The appearance is colorless or slightly blue, and the neutral salt spray resistance can reach 8-336 hours, of which Huawei communication equipment can reach 336 hours of salt spray test;
- Can be used for die casting aluminum alloy, especially suitable for communication equipment such as cavity.
- Wastewater treatment is simple.
- Suitable for dipping, spraying, manual wiping.
Grooving and Groove Control
After the working tank is cleaned, the tank shall be slotted according to the proportion in the following table, and the parameters of the tank shall be controlled according to the data specified in the table:
| Tank control | slotting ratio | 10%-15% |
| PH | 3.8-4.2 | |
| Working temperature | 25-40 ℃ | |
| Processing time | 300-600 seconds (depending on the specific working conditions) |
When slotting, the stock solution and water should be mixed evenly, and then the working solution should be measured.pH, ifpHNot in the requested3.8-4.2to adjust it to that range.
Remarks:
- The operation should wear protective gloves, open the lid after not used up the product liquid should be sealed in time, properly kept.
- If the pH is high, adjust slowly with 5% sulfuric acid solution; if the pH value is low, adjust slowly with 1% sodium hydroxide.
pH measurementDetermination: Take 1000ml of the bath solution and measure it with a PH meter. The stable value is the PH value of the working solution.
Tank maintenance
- The actual production consumption is mostly carried out consumption, and the pH value of the bath solution should be detected regularly during the production process;
- There will be a small amount of precipitation in the tank liquid after long-term use. It is recommended to use the environmental passivation tank with a filter.
- About 100 ml of chromium-free passivator is added to each 2.4m ² product processed in the 200L tank, and the specific data are determined according to the actual working conditions.
- 200L tank, continuous production, and normal supplement of liquid medicine, treatment area reached 1000-1600m, please replace the tank liquid (this data is for reference only, the actual production of products on site depends on the material).
Equipment Requirements
The tank body should be lined with PP/PVC material, with constant temperature device, preferably with mixing device.
Precautions
- If used for the first time, the tank must be thoroughly cleaned.
- When too much precipitation in the working tank affects the passivation effect of the workpiece, or the treatment effect is not significantly improved by adding the stock solution, the tank liquid should be replaced and the tank should be re-slotted.
- Appropriate stirring during work is beneficial to the improvement of passivation effect, and frequent impact of the workpiece should be avoided during passivation and after passivation.
Transportation and storage
- The product should be handled gently, and it is strictly prohibited to use dangerous actions such as falling, throwing and bumping;
- The storage place should be ventilated, dry and cool, and it is strictly forbidden to be exposed to direct sunlight or outdoor;
- Do not be close to heat source, acid and alkali, oxide and other corrosive substances;
- Do not place upside down or open.
Waste water treatment
Discharge after treatment according to local regulations.
Safety Instructions
Use as much as possible to avoid eye contact, can not be swallowed, use should have good ventilation equipment, and the use of personnel operation should be with rubber gloves, such as accidentally touch the eyes or skin, with a lot of water can be washed. Please send for medical treatment if necessary.
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