【Applicable Materials】

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

[Product Overview]

Die-cast aluminum descaling and whitening agent, which can be used at ambient temperature, is suitable for cleaning and removing contaminants and oxidized black stains 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 finish, and it effectively removes residual release agent residues that have dried and hardened on aluminum parts after die casting. 
The ash-removal and whitening agent features simple operation and environmental friendliness, replacing traditional acid pickling. It requires no heating during cleaning and is currently an eco-friendly cleaning product for whitening, decontaminating, and removing oxidation from high-silicon die-cast aluminum.

【Product Features】

1. Used for descaling and removing mold-release agent residues from aluminum and aluminum-alloy die-cast parts, as well as for ash removal and whitening treatment of 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; produces smokeless whitening and wash-out whitening. 
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 Ash Removal and 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 washing → Next process step

【Instructions for Use】

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

Before cleaning	After cleaning
Application Effects

Before ash removal	After ash removal
Application Effects

Before ash removal	After ash removal
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 solution temperature and ensure it does not exceed 40°C to prevent volatilization of the active ingredients. Do not allow metal parts to fall into the solution or soak them in the solution for extended periods, as this may shorten the solution’s service life. 
3. Prolonged immersion in the etching solution will lead to a decrease in its concentration; therefore, it 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 the reading falls below 15, simply add undiluted aluminum brightening agent to restore and maintain the proper 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 challenges. 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 does not contain heavy metals; it shall be transported as a non-hazardous material.