Comprehensive Key Testing Guide for Basin Faucets and Shower Sets
2024-03-10
In the sanitary ware industry, the appearance, touch feeling and functionality are the first part for users can directly perceive the product. But actually what truly determines a product's quality and lifespan is if product can pass rigorous testing system refer to different aspect.
Whether it's a basin faucet or a shower set, from structural reliability to surface electroplating quality and water safety, every aspect requires systematic verification. This article will take an engineering perspective, comprehensively analyzing the key testing items, methods, and control points for common bathroom products.
Whether it's a basin faucet or a shower set, from structural reliability to surface electroplating quality and water safety, every aspect requires systematic verification. This article will take an engineering perspective, comprehensively analyzing the key testing items, methods, and control points for common bathroom products.
I. Structural and Functional Performance Testing
Structural performance is fundamental to bathroom products, directly determining their usability and durability.
1. Sealing Performance Test
Purpose: To prevent leakage or dripping during use.
Test Procedure:
Mount the faucet or shower mixer on the test bench.
Close the water outlet or connect a sealing device.
Hold for at least 60 seconds ubder the pressure to 0.6MPa~1.6MPa.
Inspect the valve core, interfaces, and connections.
Judgment Criteria:
No visible water droplets or leakage are allowed.
Pressure remains stable with no significant drop.
2. Flow Rate and Performance Testing
Purpose: To ensure comfortable water flow while meeting water conservation requirements.
Test Procedure:
Test the water flow rate sunder different water pressure conditions (0.1 / 0.3 / 0.5 MPa).
Test the water flow over 60 seconds when open all waer function of the product.
The flow rate (L/min) was calculated.
Key Control Points:
Is the water flow stable and continuous?
Are there any splashing or flow deviations?
3. Service Life Test
Purpose: To simulate long-term use and verify the durability of core components.
Test Method:
Use automated service life testing equipment to perform switching cycles.
Frequency is typically 10-15 cycles/minute.
Number of cycles is typically 50,000-200,000 times.
Post-test checks:
Whether a good seal is still maintained.
Whether operation is smooth.
Whether there is any structural loosening or damage.
4. Pressure and Temperature Shock Tests
Pressure Shock Test:
Rapidly circulate water pressure between 0 and 1 MPa.
Verify the product's resistance to water hammer.
Temperature Shock Test:
Alternate circulation of cold water (approximately 5°C) and hot water (approximately 70°C).
300-1000 cycles.
Evaluation Focus:
Whether cracking, deformation, or leakage occurs.
II. Surface Electroplating and Appearance Durability Testing (Key Point)
The quality of electroplating directly affects the product's appearance lifespan and corrosion resistance, which is also the part that customers are most concerned about.
1. Salt Spray Test
This is the core test for evaluating the corrosion resistance of electroplated coatings.
Test Types:
Neutral Salt Spray (NSS)
Acidic Salt Spray (AASS)
Copper Accelerated Salt Spray (CASS, for high-requirement products)
Test Conditions:
5% NaCl solution
Temperature 35℃
Continuous spraying for 24~72 hours (or even longer)
Test Procedure:
Clean and dry the sample.
Place the sample in the salt spray chamber at a 15°~30° angle.
Continuously spray for the set time.
Remove and allow to air dry before observation.
Judgment Criteria:
Blistering and peeling are not allowed.
There should be no obvious corrosion spots or exposed substrate.
2. Nickel Thickness Test
The nickel layer is the most critical anti-corrosion layer in an electroplated structure, and its thickness directly determines salt spray performance.
Common Methods:
✔ X-ray Fluorescence (XRF)
Non-destructive testing
Can test multi-layer structures (copper/nickel/chromium)
✔ Sectional Analysis
Destructive testing, used to verify structures
Testing Procedure:
Multiple measurements are taken at different locations on the product (planar, curved surfaces).
The nickel layer thickness (μm) is recorded.
Common Industry Levels:
Standard Products: 8~12 μm
Mid-to-High-End Products: 12~15 μm
High-End Products: ≥15 μm (or double-nickel layer structure)
3. Abrasion Resistance Test (Sand Drop Test)
Used to evaluate a surface's resistance to scratches and abrasion.
Test Method:
Impact or rub the surface with quartz sand or abrasive.
Test Procedure:
Fix the sample.
Select sand of the specified grit size (e.g., 0.5~1mm).
Impact the surface at a fixed pressure or height.
Continue for a certain time or number of cycles.
Judgment Criteria:
The substrate (e.g., copper layer) must not be exposed.
Surface scratches should be within acceptable limits.
4. Adhesion Test
Purpose: To verify whether the electroplated layer is firmly adhered to the substrate.
Method:
Cross-cut test + tape peeling test
Judgment:
The plating layer should not peel off in large sheets.
III. Shower Set Specific Testing
Shower products involve multiple components, making the testing more comprehensive.
1. Spray Performance Test
Purpose: To improve user comfort
Test Procedure:
Operate under standard water pressure (0.3MPa)
Use a spray test plate to detect water flow distribution
Evaluation Content:
Coverage area
Water output uniformity
Spray angle
2. Hose Performance Test
(1) Burst Pressure Test
Pressure until the hose ruptures
General requirement ≥2.5MPa
(2) Tensile Test
Apply axial tension (e.g., 500N)
Check for breakage or detachment
(3) Bending/Torsion Test
Simulate repeated bending during daily use
Check for cracking or deformation
3. Switching Mechanism Life Test
Applicable to: Multi-functional shower heads
Test Method:
Automatic equipment repeatedly switches water output modes (≥10,000 times)
Evaluation Points:
Smooth switching
Failure or leakage
IV. Safety and Material Testing
1. Heavy Metal Lamination Test
Purpose: Ensuring Drinking Water Safety
Testing Methods:
Immerse the product in simulated water.
Detect elements such as lead and nickel using ICP-MS.
2. Material Composition Analysis
Method:
Detect copper alloy composition using spectroscopic analysis.
Purpose:
Prevent the use of non-compliant materials.
3. Sealing Material Durability Test
Test Contents:
Rubber compression set
Aging performance
V. Summary: The Core Logic of Bathroom Product Quality
From a professional perspective, the quality control of bathroom products can be summarized into four key dimensions:
Structural Reliability: Sealing, Lifespan, Pressure Resistance
Surface Quality: Salt Spray, Nickel Thickness, Abrasion Resistance (Sandfall)
User Experience: Flow Rate, Spray Effect
Health and Safety: Heavy Metal Latent
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