1. What is the relationship between the specifications of the aluminum profile extrusion press and the cross-sectional diagonal of the profile?

The tonnage of the extruder is calculated according to the size of the extrusion force, and the tonnage represents the extrusion force. Common ones are 500t, 630t, 800t, 1000t, 1200t, 1800t, 2500t, etc. The larger the tonnage, the larger the aluminum profile that can be produced, that is, the larger the diagonal. Simply put, the larger the size of the extruder, the larger the diagonal of the aluminum profile can be produced.

2.  How to determine the tonnage of the extruder to be used for aluminum profile production?

Extruder is the main equipment for the production of aluminum profiles. The shape, size and appearance quality of aluminum profiles are closely related to the quality of the extruder. There are many types of extruders. When choosing the tonnage of the extruder, it is generally necessary to First calculate the extrusion ratio of the extruder. The extrusion ratio is also called the extrusion coefficient. It refers to the ratio of the cross-sectional area of the extrusion cylinder to the total cross-sectional area of the aluminum profile. It is used to measure the deformation of the aluminum alloy in the production of aluminum profiles. The main parameters of the amount are expressed by the following formula:

Λ=Ft/ΣF1

Among them, Ft represents the cross-sectional area of the aluminum ingot after being filled in the extrusion cylinder, expressed in mm²;

ΣF1 represents the total cross-sectional area of the extruded profile, expressed in mm²;

When the aluminum profile is extruded, the amount of deformation of the aluminum alloy can also be expressed by the degree of deformation: ε=λ-1

If the extrusion processing method is used, the extrusion ratio is limited. The extrusion ratio λ of the aluminum profile and aluminum rod in the first extrusion is greater than 8-12, and the extrusion of the blank for the second extrusion There is no limit to the pressure ratio.

The method used to calculate the extrusion ratio above is simply the cross-sectional area of the extruded ingot ÷ the cross-sectional area of the extruded profile. It can also be calculated in other ways, that is, the length of the extruded profile ÷ the extrusion use The length of the ingot.

Before determining the tonnage of the extruder, it is necessary to understand the cross-sectional shape of the profile, so as to determine the size of the mold, and then determine the structure of the mold, so that it can be determined whether the extrusion is a hollow profile or a solid profile. These two different types The extruder tonnage required for structural profiles is different.

There are many types of extruders. According to the extrusion capacity, they can be divided into small, medium, large and heavy extruders. The extrusion capacity of each type of extruder is limited. The extrusion capacity is usually MN Representation, that is, tonnage.