Testing Of Metal Surface Treatment Agents

(1) Product types: degreaser, degreaser, rust remover, acid pickling corrosion inhibitor, phosphating solution, passivator, rust inhibitor, sealing agent, blackening agent, polishing agent, cleaning agent, activator, surface conditioner, paint remover, flux, electroplating pretreatment agent, aluminum alloy/stainless steel/copper special surface treatment agent.

(2) Applicable substrates: metal materials such as steel, carbon steel, cast iron, stainless steel, aluminum and aluminum alloys, copper and copper alloys, zinc alloys, magnesium alloys, etc.

(3) Applicable scenarios: New agent acceptance, process quality control, treatment effect evaluation, environmental safety testing, corrosiveness testing, arbitration testing.

(1) Appearance and physical and chemical properties
Appearance, color, odor, density, solid content, non-volatile matter, pH value, viscosity, free acidity, total acidity, free alkalinity, total alkalinity, moisture, solubility, stability, low temperature stability, high temperature stability, storage stability.

(2) Processing effect performance
Oil removal rate, degreasing effect, rust removal speed, rust removal thoroughness, phosphating film thickness, phosphating film uniformity, phosphating film corrosion resistance, passivation effect, blackening film adhesion, glossiness, roughness, cleanliness, surface tension, wetting performance.

(3) Corrosion resistance and anti-corrosion performance
Salt spray test, wet heat test, drip test, single piece rust prevention, laminated rust prevention, copper corrosion, cast iron corrosion, liquid-phase corrosion, water resistance, oil resistance, weather resistance.

(4) Membrane performance
Film weight, adhesion, hardness, flexibility, impact resistance, friction resistance, sealing, fingerprint resistance.

(5) Environmental and safety indicators
Heavy metals (lead, cadmium, mercury, hexavalent chromium, arsenic, nickel), free formaldehyde VOC, Phosphorus content, nitrogen content, chloride ions, sulfate ions, acidity and alkalinity, corrosiveness, irritability, flammability, acute toxicity.