Sintered Water Pump Flange From China

BLUE offers 100+ standard water pump flanges, perfectly suited for your engine, with no mold fees. Compatible with Audi, VW, Toyota, Mazda, Jaguar, Ford, Kia, Suzuki, etc.

Why Choose BLUE?

We have established ourselves as a trusted supplier of water pump flanges, providing free mold design service, free samples, fast shipping, and competitive prices.

What Is a Water Pump Flange ?

A water pump flange is a connecting element that secures the pump to the engine block or piping system, creating a stable and leak-free path for coolant or water circulation. What distinguishes it is the flat, bolted surface through which the pump’s inlet and outlet are joined to pipes or housings.

In automotive and industrial applications, manufacturers often choose sintered metals, since they allow cost-effective mass production while holding tight tolerances. When the flange is installed, gaskets or O-rings are typically added, so that the joint remains sealed under pressure and long service.

Production of Water Pump Flange by Powder Metallurgy Process

The following is a typical powder metallurgy route for manufacturing water pump flanges, consisting of mixing, pressing, sintering, and secondary operations.

Mixing

First, mixed the metal powder with a binder such as zinc stearate or lithium stearate. These binders aid powder flow, improve compressibility, and reduce the force required to release the pressed part from the mold.

Common water pump flange materials include FC-0205, FC-0208, and FN-0205.

Compacting

Mixed metal powder is compacted in a precision PM mold under high pressure (400–800 MPa) to form the green compact of the water pump flange.

This process establishes the flange’s basic geometry, including its profiles and dimensions. Although bulk density increases during compaction, the green compact still has low strength.

Sinteirng

Then, the green compact undergoes sintering process in a controlled atmosphere at a temperature lower than the metal’s melting point.

For ferrous materials, this is typically around 1120 °C. In this stage, solid-state diffusion bonds the particles, leading to higher density, improved strength, and enhanced structural integrity of the part.

Secondary Operations

Sintered water pump flanges may require secondary operations to obtain higher precision, surface roughness, or other features. For example, sizing can improve the dimensional accuracy of water pump flanges, and machining can improve surface finish.

Common surface treatments include steam treatment, Dacromet, electroplating, etc.

BLUE Powder Metallurgy Water Pump Pulley

BLUE provides a variety of flanges for your water pump, covering a wide range of vehicle engine models.

BLUE Water Pump Flange Features

BLUE water pump flanges are manufactured in compliance with IATF 16949:2016 standards.

Our sintered water pump flanges are available in many types, including round, rounded square, and triangular, suitable for many types of automotive water pumps.

BLUE powder metallurgy flanges have high dimensional accuracy within ±0.015mm, ensuring precise connection..

The threads of our water pump flangs are precisely processed with a smooth surface and no burrs, making them easy to install.

Standard Water Pump Flange

With over 20 years of expertise in powder metallurgy, BLUE provides a wide range of standard parts with no tooling fees.

Our standard sintered water pump flanges are compatible with a variety of automotive engines, including GTE, TDCi, Carens, TDI, DCI, TSI, and more.

These standard flanges are available in various sizes, shapes, and surface treatments.

Download our product list for free by clicking the link below.

Sintered Water Pump Flanges Benefits

High Raw Material Utilization
Sintered flanges are compacted from metal powder to achieve a net shape, reducing the need for further machining process.

Tight Tolerance
The tolerance of water pump flange can reach between IT6 to IT7 after sizing.

Cost-effective in Mass Production
Powder metallurgy water pump flanges are cost-effective in mass production due to fewer processes and higher material utilization.

Batch to Batch Quality Consistency
Water pump flanges have good quality consistency between different batches.

Wide Range of Surface Treatments

Dacromet
Dacromet is a water-based, chrome-free coating made from zinc, aluminum flakes, and a binder. Water pump flanges are cleaned, coated by dipping or spraying, then cured to form a protective layer.
Anti-rust oil
Sintered flanges can be oil-soaked to prevent rust for up to one year.
Galvanizing
Sintered flanges have pores inside, which need to be filled before electroplating, and then a layer of zinc is applied by electroplating.

Custom Water Pump Flange Specifications

The following table shows BLUE’s production capabilities for water pump flanges, including density, hardness, tolerance and diameter range, surface treatment, etc.

Attribute	Value
Material	MPIF Standard 35 FC-0205. FC-0208, FN-0205, FD-0208
Density	6.6-7.0g/cm3
Hardness	65-90 HRB
Surface Treatment	Steam Treatment, Dacromet, Electroplating
Diameter	Max. 350mm
Length	Max. 200mm
Tolerance	±0.015 mm

BLUE's Powder Metallurgy Manufacturing Equipment

BLUE has a complete range of advanced powder metallurgy production equipment, including 25T to 1000T compaction press, conveyor belt sintering furnace, vacuum sintering furnace, sizing press, CNC machining equipment, hardening furnace, etc.