Next-Gen Fully Automatic Laser Welding Machine Redefines Core Drill Manufacturing
In the core drill manufacturing industry, welding quality directly determines product competitiveness. How to enhance production efficiency and reduce overall costs while ensuring weld strength has always been a central concern for manufacturers. The mature application of fully automatic laser welding technology is providing an increasingly compelling answer to this challenge.
I. Industry Pain Points and Process Innovation
Traditional high-frequency brazing has long dominated core drill manufacturing, but its inherent limitations are becoming more evident: insufficient joint strength leading to a high risk of segment loss, poor consistency in manual operations, long production cycles, and high energy consumption. As end‑users continuously demand higher drilling efficiency and longer service life, manufacturers urgently need a new process route that balances quality and productivity.
Laser welding achieves a metallurgical bond between the segment and the steel tube through a high‑energy‑density beam, fundamentally changing the failure mode of the weld joint. Fully automatic laser welding equipment further integrates this technical advantage with large‑scale production requirements, turning high‑quality welding from a “possibility” into a “stable and controllable” reality.
II. Translating Technical Specifications into Production Value
Broad Coverage for Diverse Product Lines
The versatility of a single machine directly affects the return on equipment investment. The LHH-L03 supports segment diameters from 8 to 60 mm, core drill tube diameters from 25 to 400 mm, and a maximum welding length of 900 mm. This means equipment utilisation is maximised across all product lines.
Automatic Gap Compensation
The integrated automatic weld correction function dynamically compensates for radial run‑out within ±0.5 mm, ensuring that every segment is welded with precise positioning, overcoming tube precision challenges.
Four‑Axis Synchronisation
Through movable optical elements on four CNC axes, the laser beam can be positioned rapidly. Welding speed is adjustable from 100 to 2000 mm/min, covering both efficiency and quality.
Minimal Heat‑Affected Zone
Laser welding concentrates energy in a narrow area. This prevents graphitisation of diamond particles, maximizing the retention of original segment performance.
III. Efficiency and Cost – Tangible Returns
Production Cycle Reduced by More Than 50%
Compared with high‑frequency brazing, laser welding cuts the production cycle per piece by more than half. One operator can manage multiple units – greatly reducing labour costs.
Optimised Energy Consumption
The entire machine consumes only 5 kW of power. Fibre laser source offers high electro‑optical conversion efficiency, representing substantial annual electricity savings.
IV. Weld Quality – Let the Data Speak
The laser weld joint strength exceeds that of the base metal itself. Based on this weld quality, end‑users can realise the following quantifiable benefits:
These figures mean a significant reduction in the overall cost per hole for end‑users while building differentiated competitiveness.
V. Quick Changeover for Flexible Production
The innovative tube clamping system enables rapid changeovers between different drill sizes, accommodating diameters from 25 to 400 mm. This translates directly into higher machine utilisation and reduced downtime.
Technical Reference Specifications
| Parameter | Specification |
|---|---|
| Voltage / Power Consumption | 380V 50Hz / 5 kW |
| Laser Source Power | 3 kW (fibre laser) |
| Welding Speed Range | 100 – 2000 mm/min |
| Drill Diameter Range | 25 – 400 mm |
| Maximum Welding Length | 110 – 900 mm (including thread connection) |
| Segment Size Range | Length 12–28 mm / Thickness 2–6 mm / Height 7–15 mm |
| Segment Feeding / Seam Positioning | Automatic / Automatic |
| Machine Weight | Approx. 990 kg |
| Overall Dimensions | 2200 × 1240 × 2200 mm |
Custom modifications are available upon request.