Published on Sat Jun 24 2023 01:30:44 GMT+0000 (Coordinated Universal Time) by Alex

Voxeljet VX200: A Deep Dive into Binder Jetting Power

The Voxeljet VX200 is a name that resonates within the binder jetting world. It represents a compact yet capable system designed for both prototyping and small-scale production of sand and plastic parts. Let’s take a thorough look at this printer, its specifications, usage tips, and its overall value.

Detailed Specifications: The Core of the VX200

Understanding the VX200 starts with knowing its specifications. These details outline its capabilities and limitations, which are essential for determining if it fits your specific needs.

• Build Volume: The VX200 offers a build volume of approximately 200 x 300 x 100 mm (7.9 x 11.8 x 3.9 inches). This workspace provides enough room for producing multiple smaller parts or a single larger component.
• Layer Thickness: Layer thickness is a critical factor in binder jetting. With the VX200, you can achieve layer resolutions ranging from 150 to 400 microns (0.15mm to 0.4mm). This adjustability allows you to balance surface finish and print speed based on the job requirements.
• Print Head Technology: The print head utilizes a piezo-based inkjet system. This technology delivers precise binder application, ensuring accurate part formation.
• Materials: This system is compatible with a range of materials. Common options include silica sand for casting molds and PMMA (Polymethyl methacrylate) for plastic parts, which require infiltration to gain full mechanical properties.
• Machine Dimensions: The VX200’s footprint is relatively compact. It typically measures around 1500 x 1200 x 2000 mm, making it suitable for smaller workshops or labs.
• Power Requirements: The machine operates on standard industrial power, generally 400V, 3-phase AC power. Be sure to check the exact requirements for your region.
• Control Software: Voxeljet provides dedicated software for controlling the print process. This software allows for job setup, parameter optimization, and real-time monitoring.
• Connectivity: Connectivity options generally include Ethernet for network communication.

Usage Tips: Maximizing Your VX200

Getting the most out of your VX200 involves understanding best practices for material handling, job preparation, and machine maintenance. Here are some key tips:

• Material Preparation: Proper material preparation is paramount. Ensure the powder is dry, free of contaminants, and properly graded for optimal flow and binding. Follow Voxeljet’s recommendations for the specific material you are using.
• Job Design: Consider support structures carefully. While binder jetting often minimizes the need for supports, complex geometries may require them to prevent collapse during the build process. Design support structures to be easily removable after printing.
• Parameter Optimization: Experiment with printing parameters like layer thickness, binder saturation, and drying times to achieve the desired part quality. Voxeljet provides baseline parameters, but fine-tuning is often necessary.
• Post-Processing: Binder-jetted parts are typically fragile in the “green state.” Handle them with care during removal and post-processing. Sand castings require burnout and metal casting steps. PMMA parts require infiltration with a compatible material to achieve the desired strength and durability.
• Regular Maintenance: Maintain the VX200 according to Voxeljet’s recommendations. This includes cleaning the print head, inspecting the powder bed, and lubricating moving parts. Regular maintenance will ensure consistent performance and prolong the machine’s lifespan.
• Environment Control: Manage the ambient temperature and humidity. Variations can affect material flow and binder adhesion.
• Software Updates: Keep your machine’s software up to date to benefit from the latest features and bug fixes.
• Safety Precautions: Adhere to all safety guidelines outlined in the user manual. Binder jetting can involve handling potentially hazardous materials, so proper ventilation and personal protective equipment are essential.

Evaluating the VX200: Performance Scorecard

To provide a clear picture of the VX200’s capabilities, let’s score it across several key categories:

• Print Quality: 8/10 - Offers good resolution and dimensional accuracy, especially after infiltration for PMMA. Surface finish depends on the material and layer thickness.
• Build Volume: 7/10 - The build volume is suitable for many applications, but larger parts may require segmentation.
• Printing Speed: 7/10 - The printing speed can vary based on layer thickness and material, but it generally offers a reasonable throughput.
• Material Compatibility: 7/10 - While primarily designed for sand and PMMA, the VX200 can be adapted for other materials with appropriate parameter adjustments.
• Bed Adhesion & Leveling: 9/10 - Binder jetting inherently provides excellent bed adhesion as the powder is compacted during the process. Leveling is crucial for consistent layer deposition.
• Reliability: 8/10 - With proper maintenance, the VX200 is known for its reliable performance.
• Ease of Use: 7/10 - The software interface is relatively intuitive, but mastering the printing process requires experience and optimization.
• Firmware and Software: 7/10 - Voxeljet’s software provides the necessary tools for job preparation and machine control.
• Connectivity Options: 6/10 - Ethernet is a standard connectivity option.
• Build Quality & Durability: 8/10 - The machine is robustly built for industrial use.
• Noise Level: 6/10 - The noise level is typical for industrial equipment.
• Maintenance Requirements: 7/10 - Requires regular maintenance to ensure optimal performance.
• Customer Support: 7/10 - Voxeljet provides customer support and training, but response times may vary.
• Upgradeability: 6/10 - Upgrade options are limited.
• Price to Performance Ratio: 7/10 - The VX200 represents a solid investment for businesses requiring binder jetting capabilities.

Average Score: 7.27/10

Conclusion

The Voxeljet VX200 is a capable binder jetting system that is well-suited for prototyping and small-scale production. Its reliability, material flexibility, and print quality make it a valuable asset for various industries. By understanding its specifications, following best practices, and carefully managing maintenance, you can unlock the full potential of the VX200 and achieve exceptional results.

Written by Alex