LG408 Free-Flake Zinc Phosphating Agent
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Estimated Delivery:Jun 19 - Jun 23
We focus on the production of metal cleaning agents, neutral rust removers, and metal coating agents. The metals we can handle include iron parts, aluminum parts, cast aluminum, galvanized parts, magnesium-plated parts, etc.
Product description
| Category | Details |
|---|---|
| Product Overview | LG408 Slag-Free Zinc Phosphating Agent is an eco-friendly pre-treatment product for coating, specially designed for steel surface treatment. It forms a uniform, dense and fine zinc phosphate crystal film on steel surface through optimized film-forming mechanism, which greatly improves the adhesion and corrosion resistance of the coating. Compared with traditional phosphating process, it has outstanding advantages of no sediment, stable bath solution, easy management and excellent environmental protection. |
| Main Technical Indexes | Appearance: Light green transparent liquidPhosphating film thickness: 1.5～3.5μmPhosphating film weight: 2.5～4.0g/㎡Copper sulfate drop test: ＞30s (tested 24 hours after phosphating and drying)Impact resistance test: 50kg·cmDrying temperature after phosphating: 120～180℃ |
| Core Advantages & Features | 1. Excellent process performance: Short treatment time (1.5-3min for spraying / 5-15min for immersion), fine and uniform crystal, greatly improved coating adhesion and salt spray resistance; stable bath solution, strong anti-interference ability, easy daily management2. Eco-friendly & easy maintenance: Completely slag-free, no need for frequent tank dumping and slag removal, reducing maintenance cost; free of nickel, chromium and other heavy metals, low wastewater treatment pressure; clear and transparent bath solution, easy to observe workpiece status3. Wide process adaptability: Compatible with two mainstream processes of immersion and spraying, meeting the needs of different production lines |
| Process Parameters | Applicable process: Immersion, SprayingTotal Acidity (TA): 15-25pt; Free Acidity (FA): 0.5-1.2ptWorking temperature: Room temperatureTreatment time: 2-12 minutesTank preparation concentration: 5-10% LG408 Slag-Free Zinc Phosphating Agent |
| Application Scope | Applicable materials: Various carbon steel, alloy steel partsCore application: Phosphating pre-treatment before coating, suitable for surface conversion before electrophoresis, spray painting, powder coatingApplicable process: Spraying production line, immersion treatment lineApplicable industries: Coating industries such as automobile manufacturing, agricultural machinery, chassis & cabinets, metal furniture, general hardware |
| Standard Process Flow | Alkaline degreasing → Water washing → Water washing → Acid derusting → Water washing → Water washing → Neutralization → Surface conditioning → LG408 Phosphating → Water washing → Water washing → Drying |
| Standard Operation Method | 1. Pre-treatment: Before phosphating, the workpiece must be completely degreased and fully washed with water. It is recommended to use a special surface conditioner for surface adjustment, which is the prerequisite for obtaining uniform and fine phosphating film2. Phosphating treatment: Prepare the tank with tap water / deionized water at a ratio of 5-10%, strictly control temperature, time, TA, FA and accelerator concentration; 1.5-3 minutes for spraying line, 5-15 minutes for immersion line3. Post-treatment: After phosphating, use clean tap water for two-stage counter-current rinsing. It is recommended to use deionized water for the last rinsing or passivation sealing, and immediately dry thoroughly with hot air at 110-140℃ |
| Bath Management & Maintenance | 1. Daily monitoring: Test and record TA, FA and accelerator concentration by titration every day, and monitor pH value with precision pH meter2. Parameter adjustment: Replenish LG408 stock solution when TA drops; replenish neutralizer when FA rises; replenish special accelerator when accelerator concentration is insufficient; the slag-free feature makes parameter fluctuation small, and the adjustment difficulty is much lower than traditional phosphating3. Bath maintenance: Regularly clean a very small amount of suspended solids at the bottom of the tank; when the iron ion accumulation is too high (>1.5g/L) or the film-forming quality cannot be restored, partially or completely replace the bath solution. The long-life feature greatly extends the tank replacement cycle |
| Precautions | 1. Personal protection: Wear acid-resistant gloves and safety goggles during operation2. Pre-treatment quality: Incomplete degreasing is the main cause of phosphating film defects (such as blooming, yellowing)3. Water quality requirement: It is recommended to use tap water or deionized water for preparation and replenishment, avoid high hardness water4. Pollution control: Strictly prevent foreign matters such as oil, oxide scale, other acid and alkali solutions from entering the phosphating tank |
| Storage & Packaging | Packaging specification: 25kg/plastic drum, 1000kg/plastic drumStorage condition: Store in a cool and ventilated place, avoid direct sunlight and freezingShelf life: 12 months in sealed original package |
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All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
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All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
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All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
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All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
