Products Description
Operating at high cyclic pressures up to 35 MPa with peak tolerance to 45 MPa, our Bimetallic Piston Pump Valve Plate delivers dependable fluid distribution between rotating cylinder barrels and pump housings. Utilizing our high-temperature diffusion sintering process, this Bimetallic Piston Pump Valve Plate combines high-strength alloy steel with a wear-resistant high-lead bronze layer to serve heavy axial piston pumps in mining drills, oilfield rigs, and crawler cranes. The precision-machined damping slots on our Bimetallic Piston Pump Valve Plate soften pressure pulses and fluid cavitation, protecting the valve face from bronze smearing under severe thermal and mechanical stresses.
Application Scenarios
- Port face distribution in axial piston pumps and variable-displacement units.
- Hydraulic power systems in mining excavators, petroleum rigs, and heavy construction equipment.
- High-pressure pump core remanufacturing and specialized hydraulic repair shops.
Technical Specifications
|
Material Matrix |
High-strength alloy steel backing + high-lead bronze friction layer |
|
Shear Bonding Strength |
≥180 MPa |
|
Rated Working Pressure |
≤35 MPa (Peak: 45 MPa) |
|
End-Face Flatness |
≤0.003 mm (Roughness Ra ≤0.15 μm) |
|
Alloy Hardness |
HB 80–110 |
|
Media Compatibility |
HM anti-wear hydraulic oil and fire-resistant fluids |
Customization Capabilities
- Optimized damping groove profiles and silencing orifices engineered to customer specs.
- Customized lead-bronze compositions matched to synthetic or water-glycol fluids.
- Fast-track sample delivery within 25–30 days; 100-piece trial orders supported.
Quality Control
- Spectral analysis of inbound copper-lead powders to ensure alloy consistency.
- Precision flatness and roughness verification using three-coordinate measuring systems (CMM).
- 100% full inspection of critical sealing surfaces and anti-rust treatment before packing.
FAQ
Q: How do you prevent valve plate delamination under 35 MPa continuous pressure?
A: Our steel-bronze interface achieves ≥180 MPa shear bonding through continuous sintering, preventing plastic deformation and layer separation under cyclic loading.
Q: What warranty policy applies to our export shipments?
A: We provide a 6-month warranty on non-human manufacturing defects, backed by a dedicated after-sales team that handles inquiries within 3–5 days.
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