Aluminum profile selection and basic knowledge
First, the basic properties of aluminum
Silver white, in the humid air can form a layer of oxide film to prevent metal corrosion, relative density 2.7g/cm3, melting point 660℃, boiling point 2327℃, high specific strength, good electrical and thermal conductivity, high reflection and oxidation resistance.
Ii. Types
Profile class: aluminum profile, aluminum pipe, aluminum bar, etc
Sheet: Aluminum sheet, aluminum foil, aluminum strip (coil)
Casting: Aluminum castings, aluminum pellets
Third, commonly used brand
(Extended reading: Eight series numbers of aluminum and aluminum alloy, instantly become an aluminum expert!)
The first digit of the grade indicates the aluminum alloy series, the second digit indicates the modification of the original aluminum alloy, and the last two digits indicate the purity of the aluminum alloy in the same group.
1100: For processing needs to have good formability and high corrosion resistance, but does not require high strength parts. Such as storage containers, sheet workpieces, deep-drawn concave vessels, heat exchangers, printing plates, nameplates, reflectors, etc.
2011: Fast cutting alloy, good machinability and high strength, but poor corrosion resistance, suitable for volume shafts, optical components, screw heads, screws and mechanical processing products requiring good machinability.
3003: It has the performance of 1xxx series alloy and has higher strength than 1xxxx series alloy, such as kitchenware, food and chemical products processing and storage devices, tanks and tanks for transporting liquid products, and various pressure vessels and pipelines for sheet metal processing.
4A01: High silicon content, heat resistance, wear resistance, construction materials, mechanical parts, forging materials, welding materials.
5052: The most representative alloy of medium strength (5083 is the highest), good corrosion resistance, solubility and formability, especially high fatigue strength, good seawater resistance, used in the manufacture of aircraft fuel tanks, oil pipes, as well as traffic vehicles, ships of sheet metal parts, instruments, street lamp brackets and rivets, hardware products.
6061: Heat treated corrosion resistant alloy. The T6 treatment has a very high endurance value, but the bonding interface strength is low, so it is suitable for screws, ships, vehicles, and land structures.
6N01: Medium strength extrusion alloy, can be used as a large thin meat profile with complex shape, corrosion resistance and solubility are good. Suitable for vehicles, land structures, ships.
6063: The representative extrusion alloy, the strength is lower than 6061, the extrusion is good, can be used as a complex section shape profile, corrosion resistance and surface treatment are good, suitable for building highway guardrail, vehicles, furniture, household appliances, decorations.
7072: low electrode potential, mainly used for anticorrosive covering material, also suitable for heat exchanger heat sink, air conditioner aluminum foil and ultra-thin strip.
7075: One of the highest strength alloys in aluminum alloys, but the corrosion resistance is not good, and the covering material of 7072 can improve its corrosion resistance, but the cost is increased. Suitable for aircraft, ski pole slab forging.
Examples of material selection:
Product requirements are relatively hard, the surface treatment is coarse brushed or coarse sand surface, choose 5000 series aluminum alloy, commonly used: 5052
Product surface treatment requirements are high, can not have sand holes, profile marks, choose to use 6000 series aluminum alloy, commonly used: 6063/6061
Product requirements are cheap, the need for tensile shape review, choose to use 2000 series pure aluminum, commonly used: 2011
Product high strength, high hardness, need to carry the structure, choose 7000 series aluminum alloy, commonly used :7075
Fourth, aluminum surface treatment
1. Anodizing after sandblasting or wire drawing
2. Electrophoretic painting
3, after polishing powder electrostatic spraying, fluorocarbon spraying
4, polished mirror after electroplating
5, wood grain heat transfer
6, polymer PVC coating
5. Aluminum profiles
Aluminum profile is aluminum rod through hot melting, extrusion, so as to obtain different cross-section shape of aluminum tube material. The molding process mainly includes casting, extrusion, cutting, CNC washing, surface pretreatment, coloring, 5 processes.
Titanium plating and electrophoresis process is the most expensive, followed by wood grain thermal transfer, anodizing, and finally spraying. The specific price is subject to the manufacturer's quotation.
The main applications of aluminum profiles are as follows:
1, building aluminum profiles (doors and Windows, curtain walls)
2, radiator aluminum profile
3, general industrial aluminum profile: mainly used in industrial production and manufacturing, such as automation machinery and equipment, skeleton, etc., can be customized.
4, rail vehicle structure aluminum alloy profile: mainly used for rail vehicle body manufacturing.
5, decorate aluminum profiles, make aluminum alloy surface frame, mount a variety of decorative paintings.
6, the appearance of aluminum profiles, mainly used in home appliances or communication industries, such as mobile hard disk, mobile power, TV, display and other internal structure and appearance decoration.
Six, aluminum plate
aluminum sheet (aluminum sheet)0.15-2.0mm
Conventional plate (aluminum sheet)2.0-6.0mm
Middle plate (aluminum plate)6.0-25.0mm
Thick plate (aluminum plate) 25-200mm
Super thick plate more than 200mm
Single-layer aluminum sheet
Can be used for electronic product shell, home appliance product shell or internal heat conduction parts.
The finished aluminum shell is completed through the metal stamping die stretch forming, surface pretreatment, coloring, 3 processes.
Polymer film aluminum sheet
Molding slope requirements, not easy to stretch, the material should not be corroded, super weather resistance, color diversity, easy maintenance and so on.
Suitable for electronic product shell, home appliance shell, etc
Aluminum-plastic composite board
It is a new type of material made of aluminum plate with surface treatment and coating as the surface, polyethylene and polypropylene plastic mixed as the core layer, and processed by a series of processes.
It can be applied to the decoration of curtain wall, interior and exterior wall, foyer, hotel, shop, conference room, etc., and can also be used for the reconstruction of old buildings, used as counters, furniture surface layer, and the interior and exterior walls of vehicles.
Honeycomb aluminum sheet
The composite honeycomb structure is made of preformed box panel and back plate and aluminum alloy honeycomb core material.
Suitable for building curtain wall decoration, ceiling, bus, train, subway and rail transit vehicles, commercial transport vehicles and container car body, ship construction, billboards, interior decoration projects.
Use aluminum parts as product decoration shell, with high tensile surface, the material is generally 0.4-0.8mm thickness, grade 6063/6061 or pure aluminum series.
The functional shell is made of aluminum parts, with bottom stretching and bending structure, the material is generally 0.8-1.2 thickness, and the hard grade 5052/7075 is selected, or the special grade.
Using aluminum parts to do on the shell of electronic products, it is necessary to carve radium oxide layer and then do conductive ground, because the oxide layer is not conductive after anodizing.
Seven, aluminum alloy die casting
Aluminum alloy die casting in the structural design as little as possible to design the structure of the inclined top, to prevent the subsequent to the rough edge is difficult.
In the structural design of aluminum alloy die-casting parts, it is also necessary to pay attention to the average thickness of the glue and the smooth flow of the glue, which can reduce the appearance of many problems caused by molding and increase the follow-up polishing review.
If you choose a relatively soft grade, then in the design of load-bearing structures, you still need to consider the structural strength, otherwise it is easy to break.
In general, there are more knowledge or problems encountered in the design, welcome to leave a message exchange.