Degreasing powder AR-815 is a strong alkaline industrial cleaning agent (1% aqueous solution pH 12.0–13.5). When problems occur during use, it is first necessary to distinguish between safety emergencies and process technical issues, as the handling paths for these two types of problems are completely different.
First Category: Safety Emergencies (Must be handled immediately): If skin/eye contact, ingestion, inhalation discomfort, leakage, or accidental mixing with acids occur, strictly follow the Section 5 "Emergency Measures" of the product safety data sheet – including immediate rinsing with plenty of water for at least 15–20 minutes, prompt medical attention, and presenting the product safety data sheet to the doctor. Do not delay! At the same time, ensure that emergency showers and eyewash stations are available on site.
Second Category: Process Technical Issues (such as poor cleaning effect, residues on workpiece surface, abnormal solution precipitation, excessive foam, signs of corrosion on specific materials, etc.), need to be checked one by one from aspects such as formulation ratio, operating conditions, water quality, and equipment. The following are common faults and recommended countermeasures.
| Problem Phenomenon | Possible Cause | Troubleshooting and Solution Suggestions |
|---|---|---|
| Unsatisfactory cleaning effect, oil residue | Insufficient concentration; low temperature; insufficient cleaning time; bath aging | Check the working solution concentration and replenish according to the recommended ratio; increase cleaning temperature (recommended 60–80°C); extend immersion or spray time; completely replace the bath when severely aged |
| White spots or residues on workpiece surface | High levels of calcium and magnesium ions in hard water; insufficient rinsing after cleaning; accumulation of impurities in the bath | Check water hardness, use soft water or deionized water if necessary; increase rinsing steps and ensure rinse water is clean; regularly clean sediment at the bottom of the bath |
| Abnormal precipitation or turbidity of solution | Excessive water hardness; cross-contamination with other chemicals; improper preparation sequence | Confirm the use of soft water for preparation; check that tools and containers are clean and free of contamination; strictly follow the sequence of "slowly add powder to cold water" |
| Slight corrosion of drill bits or workpiece materials | Excessive concentration; excessive immersion time; workpiece contains amphoteric metals such as aluminum/zinc | Reduce working solution concentration; shorten cleaning time; note that this product is corrosive to amphoteric metals like aluminum and zinc; for such materials, replace with a suitable product |
| Excessive foam affecting cleaning or rinsing | Relatively high working solution concentration; low bath temperature; accumulation of surfactants | Appropriately reduce concentration; increasing working temperature can reduce foam; check whether defoamer needs to be added or the bath needs to be replaced |
| Powder caking, deliquescence, difficult to dissolve | Humid storage environment; poor packaging seal | Slight caking can be crushed and used with basically no effect on performance; severe deliquescence should be discarded; improve storage conditions (cool, dry, sealed) |
To obtain official technical support from Haian Guoli Chemical Co., Ltd., it is recommended to contact via the following methods:
Before contacting technical support, it is recommended to prepare the following information so that technicians can quickly locate the problem: product name and batch number, working solution preparation concentration and method, cleaning temperature and time, water quality (hardness, water source type), material of the workpiece being cleaned and type of oil, detailed description of the problem phenomenon, and on-site photos.