Water Pump Impeller

Why choose us?

1. Precision investment casting

Silica sol + zirconium sand 7-layer shell: shell high temperature strength ≥1600℃

Vacuum directional solidification: porosity ≤0.3% (X-ray detection ASTM E505)

2. Digital processing technology

Five-axis linkage machining center:

Blade profile tolerance ±0.05mm

Shaft hole matching accuracy H7/g6

Robot polishing: Surface roughness Ra≤0.4μm

3. Dynamic balance reinforcement

Coordinate measurement: centroid deviation ≤0.01mm

Debalancing: Laser precise material removal (accuracy ±0.1g)

4. Special testing

Fluorescent penetration test (ASTM E1417) : 0.01mm surface crack detected

High speed hydraulic test: 1.5 times working pressure (GB/T 3216)

Product introduction

This stainless steel precision cast impeller is made of 30/316L and duplex steel 2205 material (316L contains 2-3% molybdenum), through 7 layers of silica sol vacuum casting (porosity ≤0.3%) to achieve 1.2-3mm thin-wall flow molding, blade profile is optimized by three-way flow theory (efficiency increase 15-20%). After five-axis precision machining (profile tolerance ±0.05mm) and robot polishing (Ra≤0.4μm), the dynamic balance level reached G6.3 (ISO 1940), and passed the fluorescent flaw detection (0.01mm crack detection) and 1.5x water pressure test, widely used in chemical pumps, fire pumps and other high pressure scenes.

Our advantage

1. Fluid dynamics optimization design

Three-way flow theory is used to design blade profile, which improves efficiency by 15-20% (vs traditional impeller).

Balance rating G6.3 (ISO 1940), vibration value ≤1.5mm/s (ISO 10816)

2. Multi-material selection

304 stainless steel: cost-effective solution, resistance to general corrosion (salt spray ≥500h)

316L stainless steel: Molybdenum 2-3%, CL- corrosion resistance (≥1000ppm)

Duplex steel 2205: Strength/corrosion resistance balance (yield ≥450MPa)

3. Precision runner molding

Blade thickness 1.2-3mm, runner roughness Ra≤1.6μm (cast state)

Can be cast back bend type/front bend type/radial type blade, suitable for flow 5-500m³/h

4. Strict industry certification

Provide hydraulic performance test report (GB/T 1236 standard)

Comply with ISO 5199 centrifugal pump technical specification

Detail data

FAQ

1.What is the Minimum Order Quantity?

5~1000 pcs. And we also accpet sample orders.

2. Can you manufacture according to customer's samples?

According to samples, we can make drawing, tooling and sample

3.How long will it take to make new samples according to customer's drawing or sample?

Totally 20 days. 10 days for tooling and another 10 days for sample.