Special Profiles

Why Choose Us?

Professional Team

Founded in April,2007, Suzhou Shengfa Aluminium Industry Co.,Ltd. Have 15 years experience in aluminium extrusion profiles. We has been a leading aluminum extrusion, machining and surface treatment manufacturer in China.

Accept ODM/OEM service

Can provide aluminium extrusion profiles, semi-finished components, semi-finished systems and finished products. Shengfa provides OEM and ODM services according to DIN EN, ASTM, GB/T standards and customer requirements.

High Quality

Shengfa acquired Jiangsu Province Quality and Integrity Double Guarantee Demonstration2019, acquired ISO9001 International Quality System Certification in May, 2015, acquired IATF 16949 International Quality Systerm Certification in Jul.,2021.

Advanced Equipment

Shengfa has more than 3,000 dies, 630MT, 830MT, 1250MT,1600MT, total 4 extrusion lines, 2 sets of sandblasting machines, 6 sets of plane sawing machines, 3 sets of double end sawing machines, 1 set of 4.5m CNC machine, 2 sets of 850mm CNC machines, 8 sets of punching machines, 2 sets of tapping machines and 1 oxidation line.

What Is Special Profile

Special profiles are basically sections with a shape or set of properties that differ from those of general-use, universal rolled steel. Special profiles are used for specific operating conditions, which, in fact, determine their design, as well as physical and mechanical properties. Special metal profiles are manufactured from carbon, alloyed and stainless steels, aluminium, copper and other non- ferrous metals and alloys.

Industrial Special Profiles

Origin: Suzhou, Jiangsu Province, China. Shape: various. Alloy or not: aluminum alloy

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Roll Screen

Roll-up or poster stand, display stand, advertising industry is also called pull-up frame, easy-pull frame, easy-pull roll, etc., is a set up publicity poster.

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What Are the Advantages of Special Profiles

Special profiles offer several advantages:

Lightweight

Aluminum is a lightweight metal, making special profiles ideal for applications where weight is a concern, such as in transportation, machinery, and construction.

Corrosion resistance

Aluminum forms a natural oxide layer that provides excellent protection against corrosion, making special profiles suitable for use in outdoor environments and humid conditions.

Versatility

Special profiles can be extruded into a wide variety of shapes and sizes, allowing for design flexibility and the ability to create complex structures.

Durability

Special profiles are strong and durable, with a high strength-to-weight ratio. They can withstand heavy loads and various environmental stresses without compromising their structural integrity.

Easy to fabricate

Special profiles can be easily cut, drilled, and machined, making them easy to work with and integrate into various projects.

Low maintenance

Special profiles require minimal maintenance, as they do not rust or deteriorate over time, reducing the long-term costs associated with their use.

Recyclable

Aluminum is a highly recyclable material, making special profiles an eco-friendly choice for sustainable construction and manufacturing.

Cold Rolling and Cold Drawing of Special Profiles

Cold rolled special shapes and sections are produced by forming round wire rod using a continuous rolling process at an ambient temperature. This is an extremely efficient method for producing smaller profiles. The cold process allows us to offer an excellent surface finish on strong, durable, and ductile pieces.

The cold drawn process incorporates a precision reduction of the cross sectional area of pre-rolled pro-files or wire rod that is drawn through a series of one or more dies at an ambient temperature. Cold drawn stainless steel sections offer special profiles required by our customers. Tolerances are tight with improved surface conditions. So they are reducing the need for more machining during finishing operations. Hence, special cold drawn profiles are ideal for gears, keyways, pumps parts, turbines, and many other industrial needs.

How to Improve the Quality of Special Profiles

The working belt must be ground and polished before the mold is put on the machine. The working belt generally requires polishing to the mirror surface. Before assembling the flatness and perpendicularity of the mold work belt, the industrial aluminum profile should be inspected. To a certain extent, the quality of nitriding determines the polishing finish of the work belt. The mold cavity must be cleaned with high-pressure gas and a brush, and there must be no dust or foreign objects. Otherwise, the work belt will be easily pulled down by the metal flow, and the extruded profile products will appear rough or scratched.

During the extrusion production, the mold holding time is generally about 2-3 hours, but not more than 8 hours, otherwise, the hardness of the nitride layer of the working belt of the mold will be reduced, which will result in the rough surface of the profile and serious industrial aluminum profile. Will cause defects such as scribing.

Adopt the correct alkali washing (mold cooking) method. After the mold is unloaded, the mold temperature is above 500°c. If it is immediately immersed in the alkaline water, the temperature of the alkaline water is much lower than the mold temperature. If the mold temperature drops rapidly, the mold is prone to cracking. The correct method is to wait for the mold to be unloaded and place the mold in the air to 100°-150°c and then immerse it in alkaline water.

Optimize the extrusion process. To scientifically extend the life of molds, the rational use of molds for production is an aspect that cannot be ignored. Because the working conditions of the extrusion die are extremely bad, reasonable measures must be taken to ensure the organizational performance of the die in extrusion production.

The mold must be treated with a reasonable surface nitriding process in the early stage of use. Surface nitriding treatment can make the mold greatly increase the surface hardness of the mold while maintaining sufficient toughness, so as to reduce thermal wear when the mold is used. It should be noted that the surface nitriding is not completed at one time. During the service of the mold, nitriding treatment must be repeated 3-4 times. The thickness of the nitriding layer is generally about 0.15mm.

The use intensity of the mold is from low to high to low. When the mold has just entered the service period, the internal metal structure performance is still in the floating stage. During this period, the industrial aluminum profile should adopt a low-strength operation plan to make the mold transition to a stable period.

The use and maintenance records of strong molds in the extrusion production process, perfect the tracking record files and management of each set of molds. Extrusion dies are scrapped from the factory inspection and received at the end of use. The intermediate time is as short as several months and as long as more than one year. Basically, the used record of the mold also records the various processes of profile production.

Choose a suitable extrusion machine for production. Before the extrusion production, the profile section needs to be fully calculated, and the tonnage size of the extruder is determined according to the complexity of the profile section, the wall thickness, and the extrusion coefficient λ.

The cross-section of the profile extrusion machine itself is ever-changing, and the aluminum extrusion industry has developed to this day. Aluminum alloys have important advantages such as being lightweight and having good strength. At present, many industries have used aluminum profiles to replace the original materials. Due to the particularity of some profiles, the mold is difficult to design and manufacture due to the special profile section.

Reasonable selection of ingot billet and heating temperature. The alloy composition of the extruded billet must be strictly controlled. At present, general enterprises require the ingot grain size to reach the first-class standard to enhance plasticity and reduce anisotropy.

Application of Special Profiles in the Field of Marine Ships

Aluminum is also an advanced material for building ships and marine engineering structural parts. The characteristics of light weight, strong mechanical properties and corrosion resistance of aluminum alloy make it the material of choice for modern ships.

Ships made of aluminum alloy have the characteristics of high speed, long service life, high load capacity and low maintenance cost.

Special profiles are also widely used in ships. Deformed aluminum alloys are used for the sides, bottom panels, keels, decks, and engine pedestals of speedboats, sailboats, passenger ships, and military boats.

In the application of aircraft carriers, due to the unique characteristics of low density and high strength of special profiles, it plays a vital role in improving the tactical and technical characteristics of aircraft carriers.

Application of Special Profiles in the Field of Military Weapons and Equipment

Special profiles are widely used in the field of military weapons and equipment. The light weight, strength and corrosion resistance of special profiles make them ideal for military equipment manufacturing, improving equipment performance, mobility and reliability while reducing weight and energy consumption.

The lightweight of weapons and equipment has an important impact on the endurance and maneuverability of weapons. Aluminum alloys are widely used in weapons and equipment. In addition to armored vehicles, deformed aluminum alloys are used for balance connecting rod bases, brake discs, steering knuckles, turret seats, smoke launchers, etc.

Military vehicles: Special profiles are used in the chassis and body structure of military vehicles such as tanks and armored vehicles, which can reduce the overall weight and improve flexibility and mobility.

Weapon system: Special profiles are used in the manufacture of artillery, missile launchers and rocket engines to improve portability and reliability.

Warships and submarines: Special profiles are used to support the hull structure, deck and internal equipment to improve the depth and speed of submersion.

The Main Points to Pay Attention to for Daily Maintenance of Special Profile

From a professional point of view, the daily maintenance of special profiles needs to pay attention to the following aspects:

Choice Of Cleaning Agent

The surface treatment and coating of special profiles have a great influence on its corrosion and wear resistance. Therefore, cleaning agents containing acid-base components should be avoided when choosing cleaning agents, as they may damage the treatment and coating of the surface of special profiles. It is recommended to use a soft cloth and a neutral detergent such as water and soapy water.

Storage And Placement

Special profiles should be stored and placed to avoid moisture, dryness, direct sunlight and polluting the environment. At the same time, the storage and placement site should be flat and unobstructed to avoid damage such as deformation and bending of special profiles during storage. It is recommended to place the special profile in a dry, ventilated, free of direct sunlight and use a mat or wooden frame to isolate the special profile from direct contact with the ground or storage area to avoid friction or corrosion.

Maintenance Of Fasteners

Special profiles need to be regularly checked for looseness during use. If the fasteners are found to be loose or damaged, they should be treated and repaired in time to avoid problems such as deformation, bending or corrosion of special profiles.

Surface Protection

Special profiles need surface protection during use to enhance their corrosion resistance and wear resistance. Protective coatings such as varnishes, acrylic coatings, etc. Can be used to protect the surface of special profiles.

Regular Inspection

Special profiles need to be regularly checked during use, including whether the surface is damaged, deformed, whether the fasteners are loose, etc. If a problem is found, it should be dealt with and repaired in time to avoid the problem from expanding.

Our Factory

Founded in April,2007, Suzhou Shengfa Aluminium Industry Co.,Ltd has been a leading aluminum extrusion, machining and surface treatment manufacturer in China with fine quality, prompt customer service and overall solutions for customer products. Shengfa acquired Jiangsu Province Quality and Integrity Double Guarantee Demonstration Unit in Nov.,2011, acquired Jiangsu Province Intergity Management Demonstration Unit in Mar., 2015, acquired Jiangsu Province Private Technology Enterprise in Oct.,2019, acquired ISO9001 International Quality System Certification in May, 2015, acquired IATF 16949 International Quality Systerm Certification in Jul.,2021.

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Our Certificate

ISO9001,IATF16949，Shengfa have patents of a camera housing, a radiator anti-hot air return structure and a radiator containing the structure, an automobile radiator with a shock absorption structure for easy replacement of the core body, an automobile radiator guard plate structure and a radiator containing the radiator.

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Production Equipment

FAQ

Q: What are special profiles?

A: Special profiles are rolled in widths ranging from 15 mm to 300 mm and thicknesses from 5 mm to 60 mm. Being able to produce hot-rolled special profile bars tailored to suit customer needs, allows us to often find a solution that allows more efficient manufacturing and lower production costs.

Q: How do I choose special profile?

A: Things to consider when selecting aluminium extrusion profile
Understand the different aluminum alloys.
Consider the properties required for your product. .
Consider the extrusion process.
Consider the surface finish.
Evaluate strength and formability requirements.
Consider the cost. .
Consult with a professional.

Q: What are the different types of special profiles?

A: Common profile types include round, square and rectangular tubes or bars. They provide strength and durability without much maintenance. Square and rectangular hollow sections can be used for horizontal and vertical rails.

Q: What is the standard length of special profile?

A: There are three standard lengths for the anodized profile tube – 3000, 4000 and 6000 mm. Alternatively, a custom cut-off that has been sawn to size with millimetre precision can be ordered. The special profile tubes are significantly lighter than steel tubes and permanently stable.

Q: How are special profiles extruded?

A: Aluminum extrusion involves heating and pushing aluminum alloy through a die with a predesigned cross-sectional shape. A firm ram pushes the aluminum through the die and pulls it along a runout table during the operation.

Q: How do you clean special profile?

A: Rinse generously with clean water to remove all debris. It may be necessary to rub with the sponge while rinsing. To remove non water soluble deposits, such as silicone, grease or others, use a mild solution of alcohol in water. Denatured alcohol or methanol or isopropyl alcohol and methanol can be used.

Q: Does special profile rust?

A: Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion. Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion.

Q: How is special profile made?

A: Aluminum extrusion is a process by which aluminum alloy material is forced through a die with a specific cross-sectional profile. A powerful ram pushes the aluminum through the die and it emerges from the die opening. When it does, it comes out in the same shape as the die and is pulled out along a runout table.

Q: What are the properties of special profile material?

A: Special profile exhibits high corrosion resistance, durability, lightweight characteristics, and ease of mechanical processing. Aluminum profile profiles are commonly used in the production of doors and are integrated with various types of glass and different lock mechanisms.

Q: What are the advantages of special profile?

A: Aluminum (Al) profiles have good ductility, which allows them to be combined with many metal elements to create high-quality light alloys. Aluminum (Al) profiles are modular and multifunctional, which allows for the rapid construction of ideal mechanical equipment (including driver devices, gear-gear devices, etc.)

Q: Is the special profile corrosion-resistant

A: Special profiles are made from high-quality aluminum alloys. High quality aluminum alloys are extremely strong and can withstand a lot of weight. In addition to this, they are also resistant to corrosion, so they will not rust or lose their original shape even after going through harsh weather conditions.

Q: How do you bend special profiles?

A: Ensure that you have a well-ventilated area and wear appropriate protective gear. Position the induction coil over the section of the profile that needs to be softened and activate it according to manufacturer instructions. Once heated, use hydraulic pressure to gradually bend the softened area into shape.

Q: How many types of special profile are there?

A: The main types of special profile include extruded, rolled, sheets, composite panels, diamond plate, and tread plate. Extruded sections are the strongest and most commonly used for structural framing, doors, windows and curtain walls.

Q: What are the uses of special profile?

A: They are used in chassis, body parts, railings, and frames within cars, trucks, trains, and even aerospace applications; Solar energy systems: the renewable energy sector, particularly solar panel frames and mounting systems, benefits from the durability and corrosion resistance of aluminum profiles.

Q: How do you calculate special profile?

A: Taking the 4545 aluminum profile as an example, we already know that the length of the aluminum profile is L=500mm, the load is F=800N (1kgf=9.81N), and both ends are fixedly supported, then the aluminum profile deformation amount = The force calculation formula of industrial aluminum profiles is: The calculation.

Q: Is the hardness of special profiles high?

A: Special profile are known for having the highest tensile strength of any metal. Aluminum has a tensile strength of 60,000 psi, while titanium has a tensile strength of 35,000 psi and steel has a tensile strength of 30,000 psi. contractors often choose aluminum extrusions when selecting a lightweight material because it provides the ideal choice without sacrificing strength.

Q: What is the tolerance of special profile?

A: Designing special profiles gives immense possibilities. There are no general rules for what shapes and tolerances that can be applied in each case. Shape, wall thickness and alloy will have influence on the achieved tolerances. Narrow tolerances can reduce the productivity of the profile and thus the cost.

Q: How do you cut special profile straight?

A: One option for cutting special profiles is to simply use a hacksaw. Look for a bimetal blade and select the highest teeth per inch, or TPI, available. A miter box is recommended to help ensure a straight cut.

Q: What is the classification of special profile?

A: According to the classification of processing technology, industrial aluminum profile is divided into rolled products, extruded products and cast products. Rolled products include Sheet, Plate, Coil, and Strip. Extruded products include pipes, solid bars, and profiles.

Q: What is the density of special profile?

A: The aluminum profile has a density of only 2.7 g/cm3, which is about 1/3 of the density of steel, copper or brass (7.83 g/cm3, 8.93 g/cm3, respectively). Aluminum shows excellent corrosion resistance under most environmental conditions, including air, water (or brine), petrochemicals, and many chemical systems.

As one of the most professional special profiles manufacturers in China, we're featured by quality products and low price. If you're going to buy cheap special profiles for sale, welcome to get quotation and free sample from our factory. Also, customized service is available.

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