What Material Is The Oil Press Made Of? What Kind Of Material Oil Press Good?

At present, the oil press material on the market is mainly divided into four kinds, that is, cast iron, aluminum alloy, carbon steel and stainless steel.

The different quality of the material directly determines the quality and service life of the oil press, which is why the oil press with the same production capacity and appearance varies greatly, and its price is uneven and its quality is uneven.

In order to avoid the majority of customers into the bad business carefully woven scam net, in this for you to share the type of oil press material and what kind of material oil press good.

Cast Iron Oil Press

Cast iron oil press is fuselage carbon content of more than 2%, silicon content of 1.25% ~ 3.6% iron carbon alloy.

The carbon in cast iron exists in the form of graphite, the fracture is grayish white, soft and easy to cut.

Advantages: low melting point, good fluidity, good wear resistance and shock absorption, low price;

Cons: Hard and brittle, not malleable.

Aluminum Alloy Oil Press

Aluminum content in aluminum alloy oil press is about 8.4%. In order to improve performance, silicon and magnesium are often added, often called "Zinc-silica-aluminum".

Under casting conditions, the alloy has a quenching effect, that is, "self-quenching", can be used without heat treatment, and the castings after metamorphic heat treatment have high strength.

Advantages: 

1. Surface treatment: electroplating, spraying;

2. No iron absorption, no corrosion, no stick mold;

3. Good mechanical properties and wear resistance at room temperature;

4. Low melting point;

5. Good casting performance;

Disadvantages: poor corrosion resistance, short service life, not suitable for use in high and low temperature working environment.

Carbon Steel Oil Press

Carbon steel has a carbon content between 0.02% and 2.11%. It is a carbon alloy without many other alloying elements.

In practice, carbon steel tends to contain different alloying elements, such as manganese, nickel, vanadium, etc., depending on its use.

Advantages: Greater hardness, higher strength, lower molding and cheaper;

Disadvantages: poor hardenability, low strength grade, low yield ratio, poor tempering stability, poor heat resistance, can not achieve wear resistance, corrosion resistance and other special requirements.

Stainless Steel Oil Press

The chromium content of stainless steel is more than 12.5%, and the corrosion of steel alloy steel with high resistance to external media (acid, alkali, salt) has added more Ci, Ni and other metal alloy elements. Therefore, stainless steel is also a lot of material performance is better.

Advantages: good polishing performance, weldability, corrosion resistance, heat resistance, wear resistance;

Disadvantages: High cost, no alkali corrosion resistance.

The performance of four kinds of oil press material is ranked as follows: stainless steel oil press > aluminum alloy oil press > carbon steel oil press > cast iron oil press.

Because the oil press is obtained by the extrusion friction between the oil and the pressing screw and the pressing chamber, the friction heat generation will have high requirements on the material of the oil press, and the stainless steel material has good heat resistance, wear resistance and corrosion resistance, so whether at high temperature or low temperature, the service life of the equipment is long and the oil is guaranteed, and the food safety is assured.

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