Aluminum Extrusion

The annual production of Suanl aluminum extrusion capacity is 30,000 tons. We have 2 extrusion production lines (600 tons, 1100 tons).The extrusion process begins with logs or billets of aluminum. These logs are 22 feet long and average 1200 pounds in weight. 7″, 8″, and 10″ diameter logs are offered with alloys like 6063, 6005, 6463, and 6061.

aluminum extrusion

What is Aluminum Extrusion?

Aluminum extrusion is the application of an external force to a metal billet . and placed inside an extrusion barrel to cause it to flow out of a specific die hole. to obtain a desired cross-sectional shape and size. Extrusion is a forming process for aluminum by which various profiles.

Why Custom Aluminum Extrusions ?

Due to the industrial production and daily life. we will have customized design for aluminum profile shape. The function will also according to the environment of application and use function. So the Custom Aluminum Extrusions has widely used in the aluminum profile industry .

Aluminum Extrusion Profiles

1. Improve the aluminum’s deformation capacity 

In the extrusion deformation zone, aluminum is under a strong three-way compressive stress state. which allows it to fully display its plasticity and obtain a high deformation volume. Due to its mechanical qualities. aluminum is a good material for forming and shaping metal billet segments.

Aluminum’s strong ductility allows it to be easily molded into varied cross sections . without exerting a great deal of energy in machining or forming. and its melting point is typically around half that of common steel. the extruded aluminum profile manufacturing method requires comparatively little energy. resulting in reduced tooling and production costs. Aluminum’s strong strength-to-weight ratio also makes it an ideal material for industrial uses. makes it an ideal material for industrial use

2.A variety of items.

Extrusion may generate not just simple cross-sectional tubes, rods, and wires. but also solid and hollow profiles with extremely complicated cross-sectional shapes.

3.Excellent versatility in production.

Extrusion molding has a high degree of adaptability. by simply changing the mold, numerous shapes, sizes. and kinds of goods manufactured on the same equipment. and the process of changing the mold is easy, quick, and efficient.

What are Aluminum Extrusions used for?

Aluminum Extrusions used for 9 Applications as follow:

  • Aluminum profiles for construction
  • Aluminum Extrusion Heat Sinks
  • Industrial aluminum profiles
  • Aluminum profiles for auto parts
  • Furniture aluminum profiles
  • Solar photovoltaic profiles
  • Aluminum alloy profile for rail vehicle structure
  • Mounted aluminum profiles
  • Medical equipment aluminum profiles
aluminum profile extrusion

Sunal Your Trusted Aluminum Extrusion Factory

Sunal Aluminum committed to custom aluminum extrusion service for more than 20 years. mainly producing 6000 series aluminum alloy industrial profile products. Our service areas include: curtain wall, louvers, heat sink, industrial fence, protective fence, assembly line workbench. ventilation louvers and other industrial aluminum profile products. We know how to control every detail of aluminum profiles in the processing process.

aluminum extrsion casting


  • Insist on using high quality raw materials, 99% pure aluminum ingots and rods.
  • Provide a complete service from communication to design. and then from design to completion of mass production of products.
  • As 18 years of OEM service factory experience. we guarantee product quality and strictlyfollow quality inspection and testing
  • Professional cargo shipment system. so that customers can rest assured and receive customized products on time.
  • Professional technical and construction personnel are the most valuable assets of Taiyang Aluminum.
  • 1-1 customized customer service system. so that customers can consult at any time.customers can consult anytime

How to Test the Quality of Aluminum Extrusion?

Profile aluminum testing divided into six categories according to performance, mainly include items: size, hardness (Rockwell, ball indentation, Shore D), density, tensile performance, flaring test, bending performance, flattening test, Charpy impact, cup burst test, torque test, Poisson’s ratio, elements, magnetism, etc.

  1. Profile aluminum metallographic analysis test items: metallographic organization, intergranular corrosion, decarburization layer depth, carburization layer depth, low magnification organization, high magnification microscope organization. grain size and microscopic rating, high temperature metallographic organization, etc.
  2. Aluminum profile fire performance testing items: oxygen index, horizontal combustion, smoke density, smoke toxicity index, burning of interior parts, fire rating, etc.
  3. Aluminum electrical performance testing items: resistivity, resistance coefficient, etc.
  4. Profile aluminum thermal performance testing items: thermal conductivity, specific heat capacity, coefficient of linear expansion, etc.
  5. Aluminum aging performance testing items: fatigue test, salt spray test, etc.
  6. Profile aluminum environmental performance testing items: heavy metals, health performance, etc.

To choose the testing project according to the problem that needs to test. for example, if you want to identify the aluminum profile grade. then only the composition analysis can be done. Want to solve the problem of easy fracture of aluminum profile products? Then you can refer to test the indicators of tensile strength, toughness, bearing capacity and hardness. Want to obtain authoritative certification such as CMA or CANS. then you need to carry out full inspection of the specified indicators according to the testing standards. So clear their own testing needs.


How does Aluminum Extrusion Work ?

Aluminum Extrusion Processing

Aluminum bar preheating + die preheating → extrusion → straightening → fixed-edge sawing → (cold processing) → artificial aging

aluminum extrusion processing
  1. Lift the aluminum rods onto the material rack of the long rod hot shear furnace. ensuring that the rods are positioned flat on the material rack to prevent accidents and mechanical faults.
  2. The typical operation of aluminum bar insertion into the furnace, heating. room-temperature need heating for approximately 3.5 hours . until the temperature reaches around 480 degrees Celsius (normal production temperature). insulation for 1 hour, you can create;
  3. Aluminum bar has heated at the same time. the mold placed in the mold furnace for heating (about 480 degrees Fahrenheit).
  4. After the aluminum bar and die have heated and insulated, the die will be placed in the extruder’s die block.
  5. Operate the long bar hot shear furnace to shear the aluminum bar. then deliver it to the raw material entrance of the extruder. run the extrusion pad to extrude the raw material;
  6. The aluminum profile enters the cooling air stage through the extrusion outlet hole . and tractored and sawed by the traction machine. then transports the aluminum profile to the adjustment table for modulation and straightening. the conveying the straightened aluminum profile to the next table for fixed-length sawing.
  7. The final aluminum profile will be taken by the workers to the aging furnace. where it will shoved into the furnace at approximately 200°C and kept warm for two hours.
  8. As the furnace cools, the ideal hardness is obtained. and the completed aluminum profiles reach the standard dimension.

The causes of corrosion spots and bubbles on the surface of the profile

Reasons for surface corrosion spots

White corrosion spots sometimes appear on the surface of the profile during the extrusion process. and small pockmarks appear on the surface of the profile after the surface oxidation treatment. which are caused by the extrusion process. The reason for this phenomenon is that the surface of the profile is burned due to the high surface temperature when the profile is extruded. In other words, it is caused by too high temperature of die and ingot, or too fast extrusion speed. In order to solve the generation of corrosion spots. the ingot temperature and extrusion speed must be strictly controlled.


Causes of surface bubbles

Profile in the extrusion process often appear surface bubbles phenomenon. The causes of bubbles and ingot looseness, the center of the crack and ingot.The presence of gas inside the ingot is related. But the extrusion process is not strictly controlled will also produce bubbles. such as the die end pressure residue cut uneven. pressure residue is too small, the ingot ends cut slope is large. the extrusion barrel cleaning is not clean. extrusion barrel wall damage, etc.. Poor exhaust during the extrusion process. the air inside the metal will also cause bubbles on the surface of the profile.

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