Product Description
Sheet Metal Fabrication
Sheet metal fabrication is the process of shaping sheet steel or aluminum into metal structures or products by cutting, stamping, folding, and assembling them. Sheet metal can be cut, bent, or stretched into almost any shape, which is usually done by cutting and firing the metal.
Sheet Metal Fabrication Process
Metal fabrication usually starts with processing raw materials, such as steel, aluminum, and copper. Sheet metal can be cut, bent, or stretched into the most ideal shape.
Here are the typical steps in their work:
Design
The design phase is the stage where the foundation for the project is laid. Designers usually create an initial sketch or 2D/3D model of the product, which can be done using computer-aided design (CAD) software or by hand. Important factors such as the product's intended use, required dimensions and tolerances, and any specific materials or finishes required are listed before production begins.
Cutting
Laser cutting is usually the first step in the manufacturing process. Laser cutting is one of the most accurate ways to cut sheet metal because the laser is able to follow the programmed design and cut the material accurately.
Bending
The bending process is called CNC folding and can be done using a variety of machines. For example, a manual press brake or an automated panel bender.
The machine forms metal parts by clamping the metal sheets and applying pressure to maintain the desired curvature.
Forming
The forming process bends or deforms the material into the desired shape. Unlike cutting (which reduces the material), forming actually reshapes the material without reducing its mass.
Welding
There are a number of welding techniques that can be used to process sheet metal, including MIG welding, TIG welding, robotic MIG welding, and spot welding.
Metal Inert Gas (MIG) Welding: This is a typically fast welding option that is better suited for thicker materials.
Tungsten Inert Gas (TIG) Welding: Provides better control and precision than MIG. Best for thinner materials. You may also see it referred to as gas tungsten arc welding (GTAW).
Robotic MIG Welding: This is the automated version of the more traditional MIG welding.
Spot Welding: This is a follow-up to the resistance welding process.
Finishing
Finishing is the final step in the preparation of a metal product and can make the product more corrosion-resistant, adding another layer of durability. It also helps to make the surface look more aesthetically pleasing.
Common finishing touches include surface treatment, polishing and powder coating in optional colors, anodizing, passivation and laser marking (such as a logo or etching some text).
| Surface Treatment |
| Aluminum parts |
Stainless Steel parts |
Steel parts |
Brass parts |
| Clear Anodized |
Polishing |
Zinc plating |
Nickel plating |
| Color Anodized |
Passivating |
Oxide black |
chrome plating |
| Sandblast Anodized |
Sandblasting |
Nickel plating |
Electrophoresis black |
| Chemical Film |
Laser engraving |
Chrome plating |
Oxide black |
| Brushing |
Electrophoresis black |
Carburized |
Powder-coated |
| Polishing |
Oxide black |
Heat treatment |
|
| Chroming |
|
Powder Coated |
|
Assembly
In sheet metal fabrication projects, assembly refers to the assembly of the required products before they are packaged and shipped to the required location.
Main Types of Sheet Metal
Aluminum: Used in automotive parts, electrical equipment, and cooking utensils. It has many advantages, including a good strength-to-weight ratio and high electrical conductivity.
Carbon Steel: Carbon steel is used in a variety of products in both industrial and consumer markets. It is a steel alloy containing carbon, which increases the hardness and strength of the material after heat treatment.
Copper: Products made from copper include gutters, roofing, rain gutters, and doors. Copper has higher electrical and thermal conductivity than aluminum, but is also more expensive.
Galvanized Steel: Galvanized steel is often used in the manufacture of automotive bodies, water pipes, fences, roofs, and stairs. It is made by applying zinc to steel through a hot-dip process, which helps to increase its corrosion resistance.
High-Strength Steel: armor plates are often made from high-strength steel. This material is made by alloying steel with a range of elements such as carbon, manganese, and copper. This helps to increase its hardness.
Stainless Steel: Used in kitchen containers, chemical storage tanks, and food processing machinery. Stainless steel has excellent corrosion resistance, fire and heat resistance, strength-to-weight ratio, and manufacturability.
Titanium: Typical products made from titanium include aerospace components, medical devices, and building components. Titanium is primarily used for its high strength-to-weight ratio and corrosion resistance. Titanium is also recyclable.
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FAQ
A: How can I get a quote?
Q: Detailed drawings (PDF/ STEP/ IGS/ DWG...) with material, quantity and surface treatment information.
A: Can I get a quote without drawings?
Q: Sure, we appreciate to receive your samples, pictures or drafts with detailed dimensions for accurate quotation.
A: Will my drawings be divulged if you benefit?
Q: No, we pay much attention to protect our customers' privacy of drawings, signing NDA is also accepted if need.
A: Can you provide samples before mass production?
Q: Sure, sample fee is needed, will be returned when mass production if possible.
A: How about the lead time?
Q: 3~6 weeks usually
A: How do you control the quality?
Q: (1) Material inspection--Check the material surface and roughly dimension.
(2) Production first inspection--To ensure the critical dimension in mass production.
(3) Sampling inspection--Check the quality before sending to the warehouse.
(4) Pre-shipment inspection--100% inspected by QC assistants before shipment.
A: What will you do if we receive poor quality parts?
Q: Please kindly send us the pictures, our engineers will find the solutions and remake them for you asap.
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