Ni-Hard 4 Anti-Wear Cast Impellers For Heavy Duty Slurry Pump Mining

Ni-Hard 4 Cast Impellers are premium white iron casting components with exceptional abrasion and erosion resistance, designed for heavy-duty mining slurry pumps conveying mineral-laden, high-solid abrasive slurry.

Product

Ni-Hard 4 Wear Resistant Cast Slurry Pump Impellers

MOQ

1 piece

Model NO

OEM customized per slurry pump model

Size

Produced strictly according to customer drawings, pump casing matching dimensions

Machining Tolerance

±0.02mm

Material

Ni-Hard 4 High Chromium White Cast Iron (ASTM A532 Class II Type A)

Application

Mining mineral processing, coal washing plant, tailings transportation, gravel slurry delivery

Surface Treatment

Stress relief annealing, shot blasting, precision machining of hub and blade surfaces

Manufacturing Process

Sand casting, precision pattern molding, dedicated quenching & tempering heat treatment, dynamic balancing

Factory

Professional mining wear-resistant casting foundry

After-sales Service

24-hour online technical support

Warranty

Quality guarantee under normal slurry working conditions

Certification

ISO 9001, CE

Standard

ASTM A532, GB/T 8263

Inspection

Hardness test, impact toughness test, abrasion erosion test, metallographic examination, UT nondestructive testing, dynamic balance test

Application Scope

Open/closed/semi-open impellers for heavy slurry pumps transporting ore slurry, tailings, silt and hard particle mixed medium

Delivery Time

12–32 working days, negotiable for bulk orders

Transport Package

Steel frame fixed seaworthy wooden case, rust-proof, shock-proof and blade scratch-proof packaging

Advantages

Ultra-high anti-abrasion & anti-cavitation performance, hard martensitic matrix with chromium carbides, long service life against sharp mineral particles, stable dynamic balance

C: 2.7–3.2, Cr: 14.0–18.0, Ni: 4.0–6.0, Mn ≤1.0, Si ≤1.0, Mo trace, S ≤0.07, P ≤0.07

• Bulk Hardness: HRC 55–62
• Dense chromium carbide hard phase uniformly distributed inside matrix
• Excellent resistance to particle erosion, slurry scouring and cavitation damage
• Low deformation rate under long-term high-solid slurry circulation

1. Massive hard chromium carbide phases effectively resist continuous scouring of sharp ore, quartz and rock particles in mining slurry
2. Optimized casting blade structure with smooth flow channel, lower slurry flow resistance and higher pump efficiency
3. Complete heat treatment eliminates casting internal stress, prevents blade cracking under cyclic slurry impact load
4. Strict dynamic balancing processing to reduce pump vibration and extend bearing service life
5. Superior cost performance compared to duplex steel and high alloy impellers for general heavy slurry mining conditions

Semi-open impeller, closed impeller, open impeller for horizontal/vertical heavy mining slurry pumps, custom non-standard Ni-Hard 4 impellers per pump design drawing

Q: What mining working conditions suit Ni-Hard 4 impellers?

A: Ideal for medium and high-concentration abrasive slurry with hard mineral particles, such as iron ore, lithium ore, coal tailings and aggregate sludge transportation.

Q: Can you adjust impeller blade structure as per slurry concentration?

A: Yes, we optimize blade thickness, curvature and flow channel width according to solid content and particle size of your slurry.

Q: Can you supply full material inspection reports?

A: Hardness, metallographic, abrasion resistance and dynamic balance test certificates are available for customer acceptance.

1. Specialized Ni-Hard series white iron smelting and heat treatment production line
2. Rich experience in casting wear parts for mining slurry pump manufacturers
3. Strict dimensional and dynamic balance inspection for finished impellers
4. Stable bulk supply for global mineral processing and tailings transport projects

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