【Applicable Materials】

Specifically for various aluminum alloys, die-cast aluminum, and aluminum-magnesium alloys.

[Product Overview]

Die-cast aluminum whitening agent, which can be used at room temperature, is suitable for cleaning and removing dirt, oxidation stains, and black spots from various aluminum alloys, high-silicon die-cast aluminum, and aluminum-magnesium alloys. After treatment with this aluminum whitening agent, the aluminum surface becomes clean and matte white, exhibiting a uniform aluminum alloy white color, and it effectively removes residues of release agents that have dried and hardened on aluminum parts after die casting. 
The aluminum brightening agent features simple operation and environmental friendliness, replacing traditional acid pickling processes. It requires no heating during cleaning and is currently an eco-friendly cleaning product for brightening, decontaminating, and removing oxidation from high-silicon die-cast aluminum.

【Product Features】

1. Cleaning agent for removing scale and residual release agent from die-cast aluminum and aluminum alloy parts; white-etching solution for cast aluminum. 
2. Pre-treatment for aluminum die casting and aluminum alloy electroplating ensures excellent adhesion of the subsequent spray coating after product cleaning. 
3. Replaces nitric acid and hydrofluoric acid cleaning processes, resulting in phosphorus-free wastewater discharge and thereby promoting environmental protection; smokeless bleaching and washing. 
4. Particularly suitable for die-cast aluminum alloys with high silicon content, such as aluminum-magnesium alloys like A356 and ADC12.

【Product Characteristics】

1. Model: Die-Cast Aluminum Whitening Agent 
2. Appearance: Liquid 
3. Usage ratio: 50%–100% 
4. Processing temperature: Ambient temperature (no heating required) 
5. Treatment method: Soaking 
6. Processing time: 1–5 minutes

【Process Flow】

Workpiece awaiting processing → Degreasing → Rinsing with clean water → Aluminum brightening → Water rinsing → Next process step

【Instructions for Use】

Prepare the working solution at a concentration of typically 50% to 100%, and immerse the workpiece to be treated in it.

Before whitening	After pulling white
Application Effects

Before whitewashing	After whitewashing
Application Effects

Before whitening	After pulling white
Application Effects

【Application Areas】

Metal processing industry, hardware and electrical appliance manufacturing, hardware and electronics industry, aerospace components, automotive parts, mobile phone accessories, hardware furniture, medical equipment, and telecommunications devices.

【Precautions】

1. For workpieces with heavy oil contamination, first use an degreasing agent to thoroughly remove the oil; otherwise, the finished product may exhibit mottling. If mottling does occur after cleaning, it indicates that the pre-treatment oil removal was insufficient. 
2. During operation, monitor the bath temperature and keep it below 40°C to prevent volatilization of the active ingredients in the solution. Do not allow metal parts to fall into the solution or soak them in the solution for extended periods, as this may shorten the service life of the bath. 
3. Prolonged immersion in the etching solution will lead to a decrease in its concentration; therefore, the solution should be replenished as needed. At the same time, the Baumé degree of the working solution should be maintained within the range of 15–18. If it falls below 15, simply add undiluted aluminum brightening agent to restore and maintain the desired concentration. 
4. This product is acidic; when handling it for extended periods, be sure to wear rubber gloves, and thoroughly rinse your hands with tap water after contact with the solution.

[Handling, Storage, and Transportation]

1. Storage: During storage at ambient temperature, the packaging drums shall be kept tightly sealed to prevent the ingress of water or other foreign matter. When stored in clean, covered, and appropriately sized containers, this product will not present any operational, handling, or storage difficulties. Protect against freezing and avoid exposure to extreme heat or cold. 
2. Packaging: 25 kg per drum, packaged in plastic drums.

3. Shelf Life: 12 months (calculated from the date of delivery under the specified conditions, provided the product is stored in its original sealed container. The sealed container must be tightly closed immediately after sampling or use). 
4. Transportation: This product is neither flammable nor explosive, is non-corrosive, and contains no heavy metals; it shall be transported as a non-hazardous material.