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Heating equipment series tailored for research scenarios
KHL-S1504 Laser Surface Heating System
Product Overview
The KHL-S1504 laser surface heating system is designed for high-temperature material testing, rapid thermal processing, thermo-mechanical coupling, additive manufacturing preheating, and research-grade thermal loading. Powered by 4 1500 W continuous-wave laser(s), the system delivers up to 6 kW of total output power. After collimation, beam expansion, and shaping, the laser beams create square or rectangular heating zones on the sample surface. Through spot stitching, overlap compensation, and independent power control, it generates a large-area, precisely controllable thermal field. Unlike traditional furnace heating that warms the chamber, air, and fixtures first, this system targets the sample directly, offering low thermal inertia, fast response, strong localized heat input, and rapid power adjustment. The system integrates with infrared pyrometers, thermal cameras, motorized lift stages, chillers, and host computer controls to enable synchronized regulation of temperature, laser power, duration, and position.
Product Positioning
Large-area controllable laser thermal field
4-channel 1500W laser beams, reshaped and stitched to create a planar heating zone ranging from 100×100 mm to 300×300 mm.
Three-layer uniformity control
Optical homogenization, geometric stitching, and closed-loop compensation to enhance adjustability and repeatability of large-area planar thermal loading.
Product Type
How it works
4 laser sources each emit continuous near-infrared laser beams, which are delivered via transmission fibers to corresponding beam shaping and projection modules. After collimation and beam shaping, the beams are converted into square, rectangular, or near-flat-top energy distributions. The resulting road surface spots are arranged at specified positions, then stitched together or slightly overlapped on the sample surface. Power compensation across different laser channels ensures uniform thermal input in the target area. An infrared thermometer or thermal camera continuously monitors the sample temperature, while the control system dynamically adjusts the output of the four laser channels to achieve closed-loop temperature control.
6 kW total power yields different theoretical average power densities depending on the area: approximately 60 W/cm² for 100×100 mm, 15 W/cm² for 200×200 mm, and 6.7 W/cm² for 300×300 mm. When selecting a model, match the effective area, target temperature, and heating rate against the material's absorptivity and thermal dissipation conditions.
Important Notice:The 300×300 mm effective area, 1600℃ maximum temperature, and 100℃/s heating rate cannot be achieved simultaneously under the same operating conditions. The 1600℃ value represents the maximum heating capability for specific small-area, high-absorptivity scenarios; highly reflective materials can improve absorptivity through surface roughening, oxidation, or application of a dedicated absorption layer.
Core Advantages
Build a large-area flat-top thermal field using 4×1500 W multi-channel laser stitching. Four independent power compensation channels enable fast, uniform, closed-loop controlled planar thermal loading.
4×1500 W Multi-Path Laser Heat Source
Maximum total laser output power: 6 kW. Channels can operate synchronously or be adjusted independently to enhance uniformity compensation across large thermal fields.
Large-area laser thermal loading
Create a planar effective heating area ranging from 100×100 mm to 300×300 mm using beam shaping and multi-spot combination.
Flat-top beam profile and thermal field uniformity
Beam homogenization and top-hat shaping convert a single-beam laser into a uniform square/rectangular spot, which is then combined across four channels with overlap compensation to create a planar thermal field.
Fast thermal response
Laser output power can be rapidly adjusted, making it ideal for rapid heating, short-duration high-temperature exposure, thermal cycling, and dynamic thermal loading tests.
Four-channel independent power control
Independently adjust power for specific channels in low-temperature zones at the center, edges, or locally to actively compensate the thermal field.
Non-contact high-temperature thermal loading
Non-contact laser head; reserves space for tensile fixtures, extensometers, thermal cameras, and other test sensors.
Electric height adjustment and working distance control
The electric lifting platform facilitates quick changeovers for workpieces of varying heights and dimensions, while optimizing spot size, seam alignment, and energy distribution.
Liquid cooling thermal management
The closed-loop water cooling system manages heat for the laser, optical head, and other critical temperature-sensitive components, enhancing stability during continuous high-power operation.
Key Technical Specifications
| Product Model | KHL-S1504 |
| Heating Method | Multi-channel continuous laser surface heating |
| Number of Lasers | 4 units |
| Single laser power | 1500 W |
| Total Laser Output Power | Max 6 kW |
| Work Mode | Continuous Laser / Power Modulation |
| Operating wavelength | Approx. 1070–1080 nm; actual values subject to laser configuration. |
| Beam shape | Square/rectangular flat-top or near-flat-top beam |
| Effective heating zone | 100×100 mm to 300×300 mm, customizable |
| System heating start point | Room temperature |
| Typical Closed-Loop Temperature Zone | 200～1600℃* |
| Maximum Temperature Rating | Up to 1600°C in specific small-area, high-absorption scenarios* |
| Typical heating rate | 15～100℃/s* |
| Typical steady-state temperature fluctuation | ±1～2℃* |
| Zone Temperature Uniformity | Typical ≤ ±2%* |
| Temperature Measurement Method | Infrared Thermometer, Thermal Imager, or Thermocouple (optional) |
| Temperature Control | Multi-channel PID closed-loop control with four independently adjustable channels |
| Spot Stitching | Supports multi-spot stitching and overlap compensation |
| Sample Stage | Electric Lift Platform |
| Cooling Method | Circulating water cooling |
| System Power | AC 380 V ±10%, 50 Hz |
| Data Features | Temperature, Power, Time, Alarm, and Test Curve Records |
| Control Interface | Ethernet, RS85, Modbus, and others |
| Security Protection | Door interlock, emergency stop, cooling, over-temperature, laser enable, and optical path interlock |
Typical Applications
High-Temperature Performance Testing of Materials
Rapid planar thermal loading for superalloys, ceramics, composites, thermal barrier coatings, and other high-temperature materials.
Thermo-mechanical coupling test
Integrates with tensile, fatigue, and creep testing machines to apply rapid, non-contact thermal fields to the gauge section of specimens during mechanical loading.
Additive Manufacturing Auxiliary Heating
Substrate preheating, interlayer temperature control, localized thermal stress regulation, and post-forming local heat treatment
New Energy Battery Materials
Laser drying, preheating, and thermal process research for electrode materials, electrodes, and functional materials
Semiconductor and Electronic Materials
Local annealing, preheating, and rapid thermal processing for wafers, substrates, and functional devices
Composite Material Machining
Research on localized preheating, softening, and joining processes for carbon fiber and thermoplastic composites
Simulation of Extreme Thermal Environments for Scientific Research
Enables rapid heating, constant temperature, thermal cycling, and dynamic temperature field testing via fast power regulation and multi-channel closed-loop temperature control.
System Configuration and Control Mode
| Configuration Type | Typical Components | Use Cases |
|---|---|---|
| Basic Power Regulation | Focusing heating head, power controller, cooling assembly, mounting bracket | Process exploration, rapid heating, and experiments with low constant-temperature precision requirements. |
| Closed-loop temperature control | Basic Configuration + Thermocouple or Infrared Temperature Sensor + PID Controller | Target temperature control, heat preservation, over-temperature protection, and repeatability testing |
| Automated Integration Suite | Closed-loop system + 3-axis platform/robotic arm + data acquisition and host computer | Multi-point switching, scan heating, test process linkage, and automatic recording |
Selection Details & Customization Services
Product power, focal length, and control method should be determined jointly based on the sample and test objectives. Before selection, clarify the following information to ensure the spot size, heating rate, and temperature stability meet actual operating conditions:
- Sample material, dimensions, thickness, weight, and surface condition
- Heated zone dimensions, target temperature, allowable ramp-up time, and hold time
- Temperature fluctuation, repeatability, measurement accuracy, and whether temperature curve logging is required
- Fixed-point scanning, multi-position switching, or mobile scanning
- Installation space, working distance, fixture interference, and cooling and safety protection conditions
Available Customizations
- Different power outputs, focal lengths, and target spot sizes
- Fixed, adjustable-angle, or three-axis movable mounting structures
- Thermocouple, Infrared Thermometry, and Dual-Point Verification Solution
- PID closed-loop temperature control, programmable temperature ramping, hold function, and over-temperature protection
- Temperature, Power, and Alarm Data Collection and Export
- Integrate with test machines, robotic arms, fixtures, and automation platforms
Usage and Safety Instructions
- ⚠Strong visible and infrared radiation is emitted during operation. Do not look directly at the light source or focus area. Use appropriate eye and radiation protection equipment.
- ⚠The sample, heating head tip, and surrounding structures may be hot. Install heat guards and allow adequate cooldown time after power-off.
- ⚠Keep the air-cooled channel clear. Do not operate continuously if cooling is abnormal, the reflector surface is contaminated, or electrical connections are loose.
- ⚠Infrared temperature readings are affected by emissivity, angle, and spot size coverage. For highly reflective metals, combine with thermocouples or use a calibrated measurement solution.
- ⚠For adhesives, coatings, and materials that may emit volatiles, evaluate ventilation, smoke extraction, and fire safety conditions.
Product Value
4 1500W continuous lasers, after collimation, beam expansion, and top-hat shaping, are stitched into multiple spots to create a large-area uniform laser thermal field. Combined with multi-channel PID closed-loop control and an electric lifting platform, this system supports high-temperature material testing, thermo-mechanical coupling studies, auxiliary heating for additive manufacturing, and simulation of extreme thermal environments in research.