Mục lục
Steel laser cutting technology was born as a leading metal processing solution, providing extremely flexible shaping capabilities, sophisticated cutting lines and improving outstanding production efficiency.
At Intech Mechanical, we provide metal laser cutting and steel sheet laser cutting services using the most modern CNC machinery systems. The content of the article below will help you understand clearly from the operating principles, outstanding advantages to the process and the most accurate way to calculate the price of steel laser cutting.
At Intech Mechanical, we provide metal laser cutting and steel sheet laser cutting services using the most modern CNC machinery systems. The content of the article below will help you understand clearly from the operating principles, outstanding advantages to the process and the most accurate way to calculate the price of steel laser cutting.
What is laser steel cutting?
Laser steel cutting is an advanced thermal processing technology that utilizes a high-energy, focused laser beam directed onto the surface of a steel workpiece. The beam melts or vaporizes the material at the point of contact, while a high-pressure auxiliary gas stream blows away the molten dross, resulting in a precise cut that follows the technical drawing programmed into the CNC machine.
Common laser technologies today
In the metal laser cutting service market, the two most common technologies are Fiber Laser and CO2 Laser:
- Fiber Laser: This technology uses optical fibers to transmit and amplify the laser beam. It is currently the most widely used modern technology, favored for its high optical-to-optical conversion efficiency, exceptionally fast cutting speeds for thin to medium-thickness steel, energy efficiency, and low maintenance costs.
- CO2 Laser: This technology utilizes a CO2 gas mixture, which is excited by an electric current. Although it is a more traditional technology, CO2 lasers remain advantageous for certain applications, such as cutting non-metallic materials or very thick steel plates, while producing a smooth, polished finish along the cut edge.
At Intech Mechanical, we utilize two Fiber CNC laser cutting machines equipped with automatic pallet changers (one JFY BFC3015 and one TRUMPF TruLaser 1030). Each machine features a 6 kW power source and a maximum cutting area of 1,500 x 3,000 mm, ensuring high precision throughout the laser cutting process.
.jpg)
Common types of steel processed via laser
Laser technology accommodates a wide variety of input materials and serves diverse manufacturing sectors:
1. Laser cutting of carbon steel
Carbon steel (such as CT3, SS400, S45C, etc.) is highly versatile. Laser cutting is an efficient method for producing base plates, flanges, machine frame components, and structural elements for industrial buildings. The quality of the cut edge depends significantly on the carbon content and the cleanliness of the workpiece surface.
2. Laser cutting of black steel plates
Laser cutting of black steel plate is commonly used to fabricate patterned partitions, gates, doors, or industrial floor plating. Since the surface of black steel plate typically features a thin layer of oxide scale, the laser cutting machine’s focal settings and gas pressure must be precisely calibrated to prevent the formation of dross (slag) spots.
3. Laser cutting of galvanized steel
Galvanized steel (whether electro-galvanized or hot-dip galvanized) is commonly used in the fabrication of electrical enclosures, cable tray systems, and ventilation ducts. When cutting this material, the machinery must be equipped with a high-capacity fume extraction system to capture the zinc fumes generated during the thermal cutting process. Additionally, cutting parameters should be adjusted to minimize scorching of the protective galvanized coating around the cut edges.
4. Laser cutting of stainless steel (Inox)
Stainless steel (grades 201, 304, and 316) offers high aesthetic value and excellent corrosion resistance. Laser cutting of stainless steel typically employs high-pressure nitrogen as an assist gas to prevent oxidation; this ensures the cut edges remain bright and free from blackening, eliminating the need for subsequent polishing.
5. Cutting capacity based on steel thickness
Processing facilities categorize steel into different thickness segments:
- Thin steel (under 3 mm): Allows for extremely high cutting speeds and produces sharp, clean edges.
- Medium-thickness steel (3 mm – 12 mm): Well-suited for standard mechanical manufacturing requirements.
- Thick steel (over 12 mm – 30 mm+): Requires high-power laser machines (ranging from 12 kW to 30 kW+) and sophisticated focal point adjustment techniques.
Key advantages of laser steel-cutting technology
Compared to traditional machining methods, CNC laser technology offers significant advancements:
- High precision: Machining tolerances typically range from ±0.05mm to ±0.1mm (depending on the machine's condition and the thickness of the workpiece). It easily handles the cutting of holes with diameters smaller than the sheet thickness, as well as complex curves.
- Superior cut quality: The heat-affected zone (HAZ) is minimal, resulting in smooth, clean edges with virtually no burrs or warping of the steel sheet.
- Exceptional processing speed: Full automation reduces order turnaround times by 3–5 times compared to mechanical cutting or traditional milling methods.
- Material optimization: Intelligent nesting software allows parts to be arranged as closely as possible, minimizing scrap and reducing material procurement costs.
- Flexible processing: There is no need for costly dies or molds. Simply update the design file on the computer, and the laser machine can immediately begin cutting new parts.
Comparing laser cutting of steel with other machining methods
To help you make an informed decision, here is a visual comparison of three common metal-cutting technologies:
| Comparison Criteria | CNC Laser Cutting | Plasma Cutting | Oxy-Gas Cutting |
| Precision | Very high (≈ ±0.05mm) | Medium (≈ ±0.5mm) | Low (≈ ±1.5mm) |
| Complex details | Excellent (small holes, intricate patterns) | Limited with sharp corners | Less suitable for small details |
| Thin steel processing | Very clean, no warping | Prone to edge burning/warping | Not suitable |
| Very thick steel processing | Depends on machine power | Good (up to 40–50 mm) | Very good for ultra-thick steel (> 50 mm) |
| Cut edge quality | Smooth, little to no dross | Slight bevel, some dross | Rough, visible drag lines, significant dross |
| Investment/operating costs | High | Medium | Low |
Conclusion: If a project requires high precision, intricate detail, and aesthetic quality, laser cutting is the premier choice. Conversely, for very thick steel plates where strict aesthetic standards or tight tolerances are not required, Oxy-Gas or Plasma cutting offers better cost-efficiency.
Professional Laser Steel Cutting Process at Intech Mechanical
A standard processing workflow typically consists of five systematic steps:
- Information Receipt: The client provides details regarding the steel type, thickness, quantity, and design files (CAD/PDF).
- Programming: Technicians review the files, extract specifications, calculate cutting paths, and optimize the layout of parts on the steel sheet.
- Execution: Steel blanks are prepared and placed onto the laser cutting machine bed; the coordinate origin is aligned, and the automated cutting program is initiated.
- Quality Control (QC): The QC department verifies actual tolerances, inspects the smoothness of cut edges and the surface of the parts, and removes any dross or slag.
- Handover: Parts are carefully packed according to established standards to prevent damage or impact during transit to the client.
Factors affecting the quality of laser cuts
To achieve the highest level of perfection in the final product, five core factors must be effectively controlled:
- Quality of the steel workpiece: A flat surface, free from significant rust or warping, ensures a stable cutting path.
- Power & Focal length settings: The machine’s power must be matched to the material thickness, and the laser’s focal point must be precisely calibrated according to the thickness of the workpiece.
- Assist gas type: Oxygen facilitates efficient combustion when cutting carbon steel, while Nitrogen ensures a clean, bright edge when processing stainless steel.
- Drawing optimization: The spacing between parts should not be too small ideally at least equal to the material thickness to prevent heat accumulation that could lead to deformation.
- Technical expertise: The operator’s experience in adjusting cutting speeds and gas pressures, as well as performing regular lens cleaning, directly determines 30% of the final product quality.
Practical applications of steel laser cutting services
Thanks to its exceptional versatility, laser cutting services are applied across a wide range of industries:
- Mechanical engineering and manufacturing: Cutting gusset plates, flanges, gears, machine components, jigs, and gearbox housings.
- Construction and structural engineering: Beam-to-column connection plates, column base plates, and formwork assembly accessories.
- Furniture production and decoration: Decorative partitions, CNC-patterned gates, advertising signage, and metal furniture bases.
- Industrial and civil applications: Electrical enclosures, air compressor housings, cable tray systems, and automotive or motorcycle components.
Contact Intech Mechanical for precision laser cutting of steel, tailored to your requirements in Hanoi
Laser steel-cutting technology plays a pivotal role in ensuring precision, aesthetic quality, and cost optimization for modern mechanical engineering projects. Equipped with advanced machinery and a team of skilled technicians, Intech Mechanical (Cơ khí Intech) is a trusted partner, committed to providing the most effective processing solutions for your business.
Do you require laser steel-cutting services based on technical drawings, with strict precision standards and clear project timelines? Send your drawings, along with details regarding the material type, thickness, and required quantity, to Intech Mechanical today. We will provide expert guidance on the most efficient production approach and a detailed, comprehensive quotation!
- Sales/Technical Department: 0966 966 025
- Email for files & inquiries: cokhichinhxac@intech-group.vn
- Address: Lot 6, Lai Xa Industrial Cluster, Tay Tuu Ward, Hanoi
