Cast iron Roots blower casting | EPC, static as a rock, pneumatic as a rainbow!

There is a kind of "silent pusher" beside the aeration tank of sewage treatment plant, beside the air supply pipeline of cement kiln, and in the air supply system of chemical reaction kettle, which delivers a steady air flow day and night-it relies on the precise meshing of two (or three) blades to achieve constant volume delivery.

This is the roots blower.

The foundation of its performance is derived from a pair of high precision, high rigidity and low vibration cast iron shell and end cover castings.

We, with the lost foam precision casting process, build a truly airtight and reliable core cast iron structure with stable operation and long service life for Roots blower!

Why do high-end Roots blower manufacturers trust our EPC castings?

Extreme dimensional accuracy ensures "zero interference" of the rotor Roots blower has very strict requirements on the outline of the inner cavity of the shell, the coaxiality of the bearing hole and the flatness of the end face-micron deviation can cause abnormal sound, heating and even locking.

Using numerical control processing foam model+vacuum negative pressure EPC, we realize:

The dimensional tolerance of castings reaches CT6-CT7.

The roughness Ra of the inner cavity surface is less than or equal to 6.3 μ m, and it can enter the fine grinding process without rough machining.

The position error of bearing seat hole is ≤±0.1mm, which ensures the uniform clearance and smooth operation of the rotor after assembly.

Material selection: HT250/HT300 high-strength gray cast iron, shock absorption and noise reduction.

High-quality gray cast iron is selected, which has dense structure and excellent graphite shape, and has the characteristics of high strength, high damping and low thermal deformation, effectively absorbing high-frequency vibration generated by rotor meshing, significantly reducing the noise of the whole machine and improving the running stability.

Complex cavity, integrated molding-bid farewell to the risk of splicing leakage It is difficult for the traditional sand mold to accurately control the spiral flow channel and sealing groove structure inside the fan shell, and it is easy to cause air tightness failure due to box dislocation and box expansion.

However, the EPC process has no parting surface and no core head deviation, which realizes:

The flow channel is smooth and continuous, the airflow resistance is small, and the efficiency is improved.

The sealing surface is flat and free of flash, so as to prevent gas from leaking in.

The shell and the support legs are integrally cast and formed, and the structural rigidity is stronger.

Green intelligence, efficient delivery

Binder-free waste sand is environmentally friendly and clean.

Digital design of the model shortens the development cycle by 40%

Support batch customization of DN80-DN600 full series fan shell, wallboard and end cover.

Widely adapt to industry needs

Municipal sewage treatment (aeration system) Aquaculture oxygenation

Pneumatic conveying (powder, granules)

Chemical and pharmaceutical positive pressure gas supply

Vacuum dehydration and defoaming equipment

Whether it is two-blade straight waist type, three-blade twisted blade type or high-pressure water cooling type, we can provide high consistency and high qualified rate cast iron casting solutions according to customer drawings or samples.

What we cast is not only the fan shell-but also the promise of "silent, energy-saving and worry-free operation"

Behind every Roots blower with low noise and high efficiency, there is a pair of silent but precise cast iron castings silently supported.

We use the "invisible mold" of EPC to create the "tangible power" of the fan;

Based on the millimeter of casting, the airflow is guaranteed to be stable for ten thousand times.

Choose us and you will get:

Lower vibration and noise of the whole machine

Higher volumetric efficiency and energy efficiency ratio Less assembly rework and after-sales failures

Faster new product development and mass production response

Cast iron roots blower casting-let every air supply be as steady as breathing!

Contact immediately for technical information, sample support and exclusive quotation!

Precision casting in micro, pneumatic in constant-EPC casts a new "core" standard for fans!