As a large aluminum extrusion machine, it is equipped with various components and possesses multiple functions, making its structure relatively complex. The extrusion machine is composed of the frame, electric and hydraulic systems, conveying system, heating system, die system, control system, shearing system, etc. Among these, the frame, electric and hydraulic systems, die system, and control system are the most critical. 1、FrameThe frame is one of the most important parts of the extrusion machine: it bears the weight and impact pressure of the entire machine. It needs to be made of high-strength steel. A structurally stable frame can withstand high extrusion forces, and its load-bearing capacity is especially important for manufacturing high-strength, high-precision aluminum profiles. It ensures that the aluminum extrusion machine can stably, accurately, and continuously produce aluminum profiles, which is also a key factor affecting the service life of the machine. The frame structure of the aluminum extrusion machine produced by our company, Huanan Heavy Industry(www.huananmachine.com), is composed of an integrally forged front crossbeam, a cast rear crossbeam, tie rods with a diameter of φ350 (material: 42CrMo), and square pressure sleeves, forming a closed prestressed composite frame. Special hydraulic preloading tools are used to apply super-pressure tensile loads along the entire length of the tie rods and compressive stress to the pressure sleeves, putting the entire frame in a prestressed state. The center distances of the four load-bearing tie rods are symmetrical with respect to the center of the press, ensuring uniform force distribution across the entire frame. This improves the precision of the extruded products. Two sets of elastic anchoring devices are installed at the bottom of the rear beam and anchored to the foundation, ensuring reliable fixation of the rear beam. The stable and sturdy frame structure is also one of the reasons why our extrusion machines have a longer service life compared to those of our peers.   2、Electric Motor and Hydraulic SystemThe extrusion machine has two power sources: electricity and hydraulics. As the driving source of the aluminum extrusion machine, the electric motor and hydraulic system require precise control and monitoring to ensure optimal performance. Key components include: Main Cylinder Extrusion Stem Extrusion Container Main Cylinder: Provides enormous extrusion force (ranging from hundreds of tons to tens of thousands of tons) to drive the extrusion stem forward. Requires high stability, sealing performance, and fatigue resistance. Extrusion Stem (Extrusion Shaft): Transfers the pressure from the main cylinder to the aluminum billet, pushing it through the die for shaping. It must be heat-resistant and wear-resistant, typically made from high-strength alloy steel (e.g., H13). Extrusion Container (Billet Container): Holds the heated aluminum billet and withstands the high pressure and temperature during extrusion. The inner lining must be resistant to high temperatures (400–500°C) and wear. It typically has a layered design, with a prestressed outer sleeve and a replaceable inner lining.   3、Die SystemDifferent aluminum profiles require different dies. The shape and dimensions of the die directly determine the cross-sectional shape and dimensional accuracy of the extruded aluminum. Therefore, die fabrication requires precision and stability. Dies are generally made of high-strength steel (such as H13 steel) to withstand the tremendous extrusion force.   4、Control SystemThe operation of the extrusion machine requires a complex control and monitoring mechanism. The electrical control system of our aluminum extrusion machines at Huanan Heavy Industry adopts a two-level control system based on industrial programmable logic controllers (PLCs). Sensors are arranged throughout various parts of the extrusion machine to monitor pressure, temperature, displacement, and other parameters in real time. The PLC system enables full process control of the machine. The control panel is equipped with operation buttons, while the touch screen includes touch switches, digital displays of extrusion speed, stroke, extrusion force, extrusion container temperature, and indicators for machine status and fault alerts.

At present, aluminum profiles come in a variety of shapes, including solid, semi-hollow, and hollow shapes. These profiles play a crucial role in shaping and enhancing the functionality of many everyday products, from household appliances to automobiles. Aluminum profiles are favored by customers for their excellent strength, stability, corrosion resistance, and lightweight characteristics.   The basic steps from aluminum billet to aluminum profile are as follows: 1、Heating the aluminum billet, 2、Extruding the aluminum billet, 3、After the billet is extruded through the mold, pulling the aluminum profile with a traction machine, 4、Cooling the aluminum profile, 5、Surface treatment of the aluminum profile. These steps may look simple, but they require some machinery to perform. Among them, the design and manufacture of the mold are very important parts. The mold is created to match the shape and dimensions required for the final product. Aluminum extrusion molds are usually made of steel or tungsten steel alloy and can withstand thousands of extrusions. 1、The aluminum billet is heated using a MULTIPLE ROD HOT SHEAR FURNACE. The aluminum billet or raw material is usually a long cast rod. It is cut to the appropriate length and heated to a temperature that gives it sufficient ductility for extrusion.   2、The heated aluminum billet is then placed into the Aluminum extruder for extrusion. After passing through the extrusion mold, the aluminum is formed into the desired shape. Currently, there are two modes of extrusion for aluminum billets: one is direct extrusion, and the other is indirect extrusion.In direct extrusion (also known as forward extrusion), the billet is placed in a container, and a ram is used to push the billet through the mold opening. The force applied by the ram causes the aluminum to flow through the mold opening, forming the shape of the mold. The extruded part is pushed out of the mold at the end of the process. Direct extrusion is typically used to produce solid shapes such as rods, bars, and tubes.Indirect extrusion is also called reverse extrusion or backward extrusion. In the indirect extrusion process, unlike the direct extrusion process where the billet is pushed through the mold, in indirect extrusion, the mold is pushed toward the billet to form the desired extruded shape. The mold is placed at the end of the ram (a hollow mandrel), the billet is loaded into the container, and then the ram is forced toward the billet, causing the billet to pass through the mold and produce the aluminum extrusion. The main advantage is that there is no friction on the surface of the billet. This reduces the extrusion load, allowing the same aluminum extrusion to be produced with a smaller machine, or a larger extrusion to be produced with the same machine. There is also no heat generated by billet-container friction. This results in better extrusion flow, fewer variables, a more consistent and easier process, and the final extruded material has better tolerances and more stable shapes.Both direct and indirect extrusion processes have their own advantages and disadvantages. The direct extrusion process is a simpler process and is usually faster, making it more cost-effective to produce simple shapes. On the other hand, the indirect extrusion process allows for the creation of more complex shapes, and due to the uniformity of material flow, parts with higher structural integrity can be produced.   3、Full servo double puller is used to pull the aluminum material, keeping the aluminum straight. The traction machines currently in use generally have a shearing function to cut the aluminum material to a suitable length, which is then cooled with water or allowed to cool naturally on a cooling table. The extruded aluminum is cooled by air or water, which helps it retain its shape.   4、The extruded aluminum is usually cut to the required length and then subjected to any necessary finishing processes, such as painting, anodizing, powder coating, or polishing. This step usually requires the use of an Ageing Furnace.   If you want to know more about aluminum extrusion machine, please visit our website www:huananmachine.com.

                                          What is the typical lifespan of an aluminum extruder? In general, the lifespan of an extruder can range from 5 to 20 years. At Huanan Heavy Industry Technology Co., Ltd., the aluminum extruders we produce have a minimum lifespan of 10 to 20 years, with an average lifespan of around 15 years. However, the exact lifespan varies depending on several factors, such as the type of materials being processed, production volume, extrusion time, machine maintenance, equipment manufacturing quality, and the operating environment. Therefore, it's difficult to provide a specific lifespan for an Aluminum extrusion machine. If the materials being processed cause significant wear on the cutting edge of the Aluminum extrusion machine , or if there is high production volume and extended continuous operation, the extruder's lifespan may be shorter. Additionally, if the extruder is not properly maintained and serviced in a timely manner, or if the working environment is harsh, its lifespan could also be affected.   To extend the lifespan of an Aluminum extrusion press, it is essential to choose reliable, high-quality equipment, ensuring the manufacturing quality and design technology meet standards. At the same time, the machine should be used correctly, following the guidelines in the user manual, with regular inspections and maintenance carried out. Parts should be replaced, repaired, or serviced promptly. Moreover, it is important to manage the equipment's working environment, ensuring the machine is operating under favorable conditions to prevent external factors from negatively affecting the extruder.    

The 75MN horizontal short-stroke front-loading single-action aluminum alloy profile extrusion machine adopts a horizontal three-beam and four-column prestressed composite frame structure, a forward extrusion method, direct drive by an oil pump, and is equipped with advanced foreign electromechanical and hydraulic control components and systems, and The complete set of mechanized auxiliary equipment adopts PLC and computer two-level control to accurately control the speed, position and pressure of the press. The technology used embodies the development trend and advanced technology level of contemporary extrusion presses, and is suitable for production. Manufacturing, operation and maintenance are conducive to improving production efficiency and reducing usage costs. Prestressed composite frame The stress-bearing frame of the Aluminum extrusion machine body consists of an integral front beam ZG35Mn (thickness 1950mm) and a rear beam thickness 1800mm (materialZG35Mn), square prestressed sleeve (material ZG35) is a closed prestressed composite frame. Special hydraulic preloading tools are used to pull the An over-pressure tensile load is applied to the entire length of the rod, and compressive stress is applied to the pressure sleeve at the same time, so that the entire frame is in a stress pre-tightened state.The column prestress is above 115% of the maximum load. (1) The center distance of the four stressed tie rods of the frame is symmetrical to the center of the press, so that the entire frame is stressed evenly. This can increase the squeeze Accuracy of pressed products. (2) Since the frame has a large bending resistance section, under the action of extrusion force, the frame elongation and bending deformation are small, so it is the frame can be fixed with horizontal and vertical guide rails at the bottom of the extrusion beam and extrusion barrel. The centering adjustment is very convenient, and the upper frame can be used as an X-shaped moving guide rail for the extrusion barrel. (3) There are two sets of elastic anchoring devices and foundation anchors at the lower part of the rear beam to make the rear beam fixed reliably. Main working cylinder/side cylinder 1. The main working cylinder of aluminum extrusion press is a plunger cylinder, which is fixed to the center of the rear beam through four pressing blocks. The plunger diameter is Φ1740mm, and the medium pressure is 28Mpa. Under the action, it can produce 66.55MN extrusion force. The cylinder body is made of 20MnMo forged steel. After forging and tempering treatment in three sections, it is buried Arc narrow gap welding, processed according to GB\T6402\2008 II level flaw detection. The main plunger is made of forged steel. The outer surface Stainless steel cladding is welded to 2Cr13 with medium frequency treatment, surface hardness is HRC46~48, and polishing degree is 0.2um. V-ring used for master cylinder seal Combined seal, using copper sleeve inner guide 2. The two main side cylinders are horizontally fixed on both sides of the rear beam main working cylinder. The diameter of the side cylinder is Φ450/Φ320mm, which generates an extrusion force of 8.9MN and a return force of 4.4MN, which can realize the rapid forward, backward and extrusion of the main plunger. The cylinder block and piston rod are made of 45 forged steel quenched and tempered. The two-way seal and piston rod seal of the combined piston head adopt V-ring combined seals, and are guided by copper sleeves. Hydraulic transmission and control system pump station The pump station of the Aluminum extrusion press adopts an integrated design and is centrally arranged under the rear part of the oil tank of the press. It is composed of an imported German Rexroth electro-hydraulic proportional control axial piston variable pump and a Chinese-made stainless steel plate circulation filtration and cooling system. The piping system design adopts necessary buffering and anti-shock measures, such as cushioning pads, hoses or shock-absorbing hoses, and flexible rubber pipe joints that can absorb vibration. The main system consists of 10 355L/min plunger pumps and 10 320L/min vane pumps from the German REXROTH company. They are designed to be arranged and matched in a certain combination. They can generate a pressure of 28Mpa and a flow rate of 3350L/min to meet the needs of main and side work. According to the cylinder operating speed requirements, closed-loop adjustment of the extrusion speed of 0~21mm/s is achieved, and the extrusion barrel locking cylinder is matched with a dedicated oil pump. Isolation control valves are designed between each oil pump group. If the two mechanisms need to operate at the same time according to the program, they can not interfere with each other. It can realize functions such as isolation between pumps, no-load starting, pressure regulation and overload protection. The pump head electro-hydraulic proportional valve and electronic control device are imported with the main pump and connected with the press main control computer to achieve online control. The main oil cylinder, auxiliary oil cylinder, spindle cylinder, and scissor oil cylinder are integratedly controlled by logic valves. The sliding mold and supporting frame are integratedly controlled by three-position four-way electro-hydraulic reversing valves. Main hydraulic components: master cylinder reversing surface valve, overflow surface valves etc. The main control system oil pump station has a total flow rate of 3350L/min, and its oil pumps are individually controlled. The design of each aluminum extrusion machine is to maximize the use of resources under the premise of ensuring quality, and has been in a leading position in the industry.

                                             Aluminum Extrusion press for prestressed composite frames A solid extruder structure is a prerequisite for ensuring the performance of the extruder. After being used for a period of time, many Aluminum extrusion machine become loose, the interfaces age, and the cylinders bend, resulting in deformation and unstable quality during the aluminum extrusion production process. In fact, the main reason is that the extruder as a whole is not strong enough. The stress during the operation of the extruder is very large, and our extruders mostly adopt a prestressed composite frame structure, which is composed of a high-thickness integral front beam, a high-thickness rear beam, and a square prestressed sleeve to form a closed The prestressed composite frame uses a special hydraulic preloading tool to apply an overpressure tensile load to the entire length of the tie rod, and at the same time applies compressive stress to the pressure sleeve, so that the entire frame is in a stress pretightened state, and the tension column prestress is 115% of the maximum load. above. For example, our 7500-ton hydraulic extrusion press has a front beam thickness of 1950mm made of ZG35Mn, a rear beam thickness of 1800mm (material ZG35Mn), and a square pre-applied sleeve (material ZG35). It can make it bear force better, which is also an important reason for the long service life of the extrusion machine.   Other advantages of prestressed composite frames 1. The center distance of the four stressed tie rods of the frame is symmetrical to the center of the press, so that the entire frame is stressed evenly. The main reason why the quality of aluminum materials produced is stable or unstable is whether the force is uniform. Only by maintaining uniform force can the overall density of the aluminum material be uniform, thereby improving the accuracy of extruded products.   2. The prestressed composite frame frame has a larger bending section, which makes the frame elongation and bending deformation smaller under the action of extrusion force. Therefore, the extrusion beam and the lower part of the extrusion tube can be fixed on the lower frame. The horizontal and vertical guide rails are very convenient for centering adjustment between the extrusion beam, extrusion barrel and mold. The upper frame can be used as an X-shaped moving guide rail for the extrusion barrel. On the premise of ensuring the stability of the machinery, the available space is used to reduce the space occupancy of the machinery.   3. There are two sets of elastic anchoring devices and foundation anchors on the lower part of the rear beam to make the rear beam fixed reliably.   After many years of production experience and continuous improvement based on customer feedback, our extrusion press is currently one of the most stable extruders on the Chinese market and one of the longest-lasting Aluminum extrusion machine.