Sheet metal laser cutting

Custom sheet metal laser cutting services in Hanoi

1. Sheet metal laser cutting capabilities at Intech Mechanical

2. Comprehensive mechanical services

• CNC Bending/Folding: Shaping components into precise angles, boxes, channels, or electrical enclosures according to technical drawings.
• CNC Punching/Stamping: Efficiently creating specific hole patterns or shaped cutouts.
• Final Welding: Utilizing TIG, MIG, or spot welding to ensure structural integrity and a high-quality, aesthetic finish.
• Surface Treatment: Applying powder coating, galvanizing, or stainless steel polishing, tailored to project requirements.

3. Why do customers trust and choose Intech Mechanical?

• Advanced Fiber Laser technology: Delivers exceptionally fast cutting speeds, precise edges, and no thermal distortion.
• Flexible, custom processing: We cut according to your specific drawings and provide support for optimizing design files (CAD, detailed sketches).
• Cost and time efficiency: Smart material utilization ensures timely delivery, even for urgent projects in Hanoi and surrounding provinces.
• Competitive pricing: Best factory-direct rates for both individual orders and large-scale industrial production partnerships.

4. Process for placing orders and receiving quotes for sheet metal laser cutting

• Step 1: Submit drawings: The client sends drawing files (CAD, DWG, DXF, or PDF with dimensions) via Zalo or email.
• Step 2: Analysis & Quotation: Technicians analyze the drawings, calculate material requirements, and provide a detailed quote along with the estimated delivery time—all within 15 minutes.
• Step 3: Prototyping / Mass Production: Laser cutting and processing are carried out according to the agreed-upon specifications.
• Step 4: Quality Inspection & Delivery: Finished products undergo quality control (QC) checks before being delivered directly to the client.

 

What is sheet metal laser cutting?

The basic principle works as follows:

• Laser generation and focusing: The laser source produces a monochromatic beam of light, which is amplified and focused by a lens system onto a tiny, precise point on the metal surface.
• Thermal impact: The intense energy causes the material at the point of contact to melt or vaporize instantaneously.
• Dross removal: An assist gas, injected coaxially with the laser beam, blows the molten metal away from the cut path, resulting in a clean, sharp-edged cut.

How does CNC laser cutting differ from manual laser cutting?

• Laser power: Determines penetration capability and the speed at which thick materials can be cut.
• Cutting speed: Directly influences the smoothness of the cut edge and the formation of dross.
• Material thickness: Inversely proportional to cutting speed and dictates the required power source capacity.
• Focal length & focal position: Determine the spot size and the width of the kerf (cut width).
• Assist gas type & gas pressure: Aid in cooling, expelling dross, and preventing oxidation on the cut surface.

Types of sheet metal that can be laser-cut

• Material: Carbon steel, black steel.
• Characteristics: High heat absorption; enables fast cutting speeds when using oxygen as an assist gas.
• Applications: Structural steel for workshops, machine frames, and industrial machinery components.

• Material: 304 stainless steel, 316 stainless steel, 201 stainless steel, etc.
• Characteristics: Requires the use of high-pressure nitrogen (N2) gas to ensure the cut edges remain free from oxidation, resulting in a bright, shiny finish without any black dross or residue.
• Applications: Medical equipment, the food industry, elevators, and high-end interior and exterior furnishings.

• Characteristics: Aluminum possesses high thermal and light reflectivity, as well as excellent thermal conductivity. Consequently, laser cutting aluminum sheets requires a laser source with high energy density and precise parameter adjustment techniques.
• Applications: Aerospace industry, electronic device enclosures, and automotive components.

Standard process for laser cutting of sheet metal

• Step 1: Receive requests & drawings: Receive CAD/DXF/DWG files, information about materials, thickness, quantity and tolerances.
• Step 2: Check and process drawings: Check geometric errors, hole size, corner radius, distance between details.
• Step 3: CNC cutting programming (Nesting): Arrange optimal details on the metal plate surface to save maximum scrap.
• Step 4: Prepare materials: Check type, thickness, flatness and quality of workpiece surface.
• Step 5: Set cutting parameters: Set appropriate power, speed, focal length and support gas type on the cutting machine software.
• Step 6: Conduct laser cutting: Position the workpiece on the machine table, start the program and monitor the automatic cutting process.
• Step 7: Check the finished product: Measure dimensions, check accuracy, cutting lines and burr/slag levels.
• Step 8: Post-cutting treatment: Remove burrs, clean the surface, move to folding, welding or finishing as required.

Advantages and disadvantages of laser cutting technology

- Key advantages:

• Ultra-high precision: Extremely tight tolerances, allowing for the easy machining of intricate parts and complex contours.
• Clean, smooth cuts with minimal burrs: A narrow heat-affected zone prevents significant thermal deformation of the workpiece.
• High processing speed: Optimizes production time for large-batch manufacturing.
• Material efficiency: Nesting software optimizes the layout of parts, minimizing scrap material.
• High flexibility: Easily switch between different production designs simply by changing the program file on the computer.

- Limitations to note:

• The initial investment cost for machinery and equipment is very high.
• It requires highly skilled technicians for operation.
• For orders with very small quantities or simple components, the initial setup costs can increase the per-unit price.

Comparing laser cutting with other metal-cutting methods