Sheet metal processing refers to a series of processing operations on metal sheets, typically with a thickness of less than 6 millimeters. Sheet metal processing covers from basic cutting and forming to more complex assembly and surface treatment processes. Its main feature is that the thickness of the metal sheet remains constant throughout the entire processing process.
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SHEET METAL BENDING MATERIAL
There are various types of materials used in sheet metal bending, and the choice of material usually depends on the functional requirements, cost considerations, and processing characteristics of the final product. Here are some common sheet metal processing materials:
Aluminum alloy, with low density, good conductivity and corrosion resistance, is widely used in aerospace, construction, transportation and other fields. Aluminum 6061, 6061-T6 Aluminum 2024 Aluminum 5052 Aluminum 5083 Aluminum 6063 Aluminum 6082
Widely used in the manufacturing of mechanical parts. Carbon steel has good mechanical properties and its hardness and toughness can be changed through heat treatment. Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36 Die steel Alloy steel Chisel tool steel Spring steel
It is a commonly used thermoplastic with good mechanical properties and impact strength, easy to process, and widely used in prototyping and industrial parts.
Nylon is widely used in engineering parts because of its excellent mechanical properties, abrasion resistance and chemical resistance, but its moisture absorption needs attention.
PC has high toughness, good mechanical processing performance, and excellent impact strength, making it suitable for applications that require high strength and transparency.
POM has very high mechanical strength and hardness, good abrasion resistance, and is one of the engineering thermoplastics with the highest machinability among plastics.
PTFE has a very low coefficient of friction and excellent chemical resistance, making it suitable for applications requiring lubricity or corrosion resistance.
METAL BENDING SERVICE
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The bending tolerance in sheet metal processing refers to the allowable range of changes in dimensions and angles during the bending process. These tolerances ensure the consistency and functionality of the parts, while considering the variability and cost in the manufacturing process.
Maximum Part Size
1200 x 800 x 500mm
Minimum Part Size
5 x 5 x 5 mm
Angle tolerance
± 1.0 °.For a 90 ° bendthe tolerance may be stricter, ± 0.5 ° to ± 1 °.
Bending radius tolerance
The bending radius inside the board is usually taken as 2 to 3 times the thickness of the board.
WORKING PRINCIPLE, ADVANTAGES AND APPLICATIONS
1. What is sheet metal bending?
Sheet metal processing bending, also known as sheet metal bending, is a common metal processing technique mainly used to change the shape of metal sheets, transforming them from a flat state to a three-dimensional structure with a certain curvature or angle. This process usually plays a crucial role in the manufacturing of sheet metal products, creating various structures ranging from simple right angle bends to complex three-dimensional shapes.Sheet metal bending is a metal processing technique mainly used to make flat metal sheets into parts with specific angles and shapes. This process is very common in the manufacturing industry, especially in industries such as automotive, aerospace, construction, furniture, and electronic equipment.
2. The advantages of sheet metal bending mainly include the following points:
High precision
Modern bending machines are usually equipped with numerical control (CNC) systems, which can achieve high-precision bending and ensure that the size and shape of the product meet the design requirements.
Production efficiency
Compared to traditional manual bending, using mechanical bending can greatly improve production speed, reduce labor costs, and ensure consistency.
Material utilization rate
Through precise calculation and design, sheet metal bending can minimize material waste, improve material utilization rate, and thereby reduce costs.
Strength increase
The bending process can enhance the structural strength and rigidity of the metal sheet, making it more suitable for withstanding external forces and improving the durability of the product.
Multifunctionality
Sheet metal bending can be applied to metal plates of various shapes and sizes, suitable for various application needs, such as making boxes, frames, brackets, etc.
Easy to mass produce
Once the bending parameters are set, it is possible to quickly and consistently produce a large number of identical products, which is very suitable for large-scale production environments.
3. Application
Sheet metal bending is a critical metal processing technology that is widely used in many industries. This technology allows for the physical deformation of flat metal materials to form the desired geometric shape without altering their physical properties. The following are some of the main application areas of sheet metal bending:
The automotive manufacturing industry
body panels, doors, hood, bumper, as well as internal frames and support structures, may all be manufactured through sheet metal bending processes.
Aerospace industry
The manufacturing of aircraft and spacecraft requires a large number of complex sheet metal components, such as fuselage panels, wing beams, engine hoods, and other structural components. These components often require extremely high precision and strength.
Electronic and communication equipment
The casings of many electronic devices, such as computers, servers, mobile phones, and base stations, are made by bending sheet metal to protect internal components and provide necessary electromagnetic shielding.
Medical equipment
surgical instruments, diagnostic equipment casings, brackets, and some internal components may require customized sheet metal bending parts.
Household appliances
refrigerators, washing machines, air conditioners, microwave ovens and other home appliances housing and internal structural parts are usually composed of bent sheet metal.
Architecture and Engineering
Ventilation ducts, roof panels, exterior wall panels, stair handrails, etc. in the construction industry need to be made by bending sheet metal.
A 1、Adopting shape bending。 2、Increase the pressure on the top sheet。 3、Add grid patterns on the material board to increase friction and prevent the workpiece from slipping during bending。
Consider the elastic recovery of the material and adjust the bending angle appropriately. Design a reasonable mold, including appropriate bending radius and angle. Use high-precision bending equipment.
A 1、The plasticity of the material is insufficient. 2、The bending radius is too small. 3、The material is subjected to excessive stress concentration in the bending region.
A Materials are mainly divided into two types: plastic materials and brittle materials. The characteristic of plastic materials is that they can both resist tension and compression, with similar tensile and compressive strength, such as carbon steel. However, brittle materials have much higher compressive strength than tensile strength and are generally used for compression, such as cast iron. Bending resistant metals should be plastic materials, such as stainless steel, with grades including 304, 316, 404, etc.
TYPES OF SURFACE TREATMENT PROCESSES
There are a wide variety of surface treatment processes designed to enhance the performance of a part, such as increasing corrosion resistance, wear resistance, aesthetics, or other specific features.
Electroplating
Using the principle of electrolysis to deposit a layer of metal plating on a metal surface, such as zinc, copper, nickel, chromium, etc., to enhance corrosion resistance, wear resistance or decorative properties.
Anodic Oxidation
Especially for aluminium and aluminium alloys, it generates a dense film of aluminium oxide by electrochemical reaction, which improves corrosion and abrasion resistance, and can also be coloured.
Wire drawing
By forming a regular fine line texture on the surface of the metal, thus giving the product a unique texture and visual effect.
Sandblasting
The use of a high-pressure jet of abrasive material (e.g. grit) to remove surface impurities and provide a uniform roughness that facilitates the adhesion of subsequent coatings.
DLC Coating
An amorphous thin film of carbon, similar in structure and properties to natural diamond, but without the crystal structure, DLC coatings are widely used in industry due to their excellent properties.
Marking
Although not a surface coating treatment, laser marking can leave a permanent mark on a metal surface for identification, tracking or decorative purposes.
