1. Material: D16 Cast Iron
• Characteristics:
High Rigidity: Cast iron (usually HT250 or higher grade) has excellent natural shock absorption performance, making it suitable for high-precision machining.
Stability: With a low coefficient of thermal expansion, it deforms minimally under temperature changes and maintains flatness over the long term.
Wear Resistance: The microporous structure on the surface of the cast iron can adsorb lubricating oil, reducing the sliding wear of the fixture.
2. Nitriding Surface Treatment
• Process: Gas or ion nitriding to form a hard nitrided layer (white bright layer) on the surface.
• Advantages:
Super-hard Surface: The hardness can reach 900 - 1100 HV, far exceeding that of ordinary cast iron (200 - 300 HV).
Zero Deformation: Low-temperature treatment (<600°C) does not change the size of the substrate, making it suitable for precision platforms.
Rust and Sticking Resistance: The nitrided layer resists the adhesion of welding spatter, making cleaning more convenient.
3. Precision Design Features
• D16 Hole System Standard:
The hole diameter is 16mm, and the pitch is 50×50mm or 100×100mm (German DIN standard).
The hole wall is hardened, and repeated insertion and extraction of the positioning pin do not easily cause wear.
• Double-sided Structure:
The upper surface is the nitrided working area, and the bottom surface can be processed with T-slots or a weight reduction structure.
4. Core Performance
• Flatness: ≤0.05mm/m² (laboratory-level accuracy).
• Load Capacity: The static load can reach 8 - 10 tons/m² (a thickness of ≥30mm is required).
• Temperature Adaptability: The working range is -20°C to 150°C (the nitrided layer does not peel off).
D16 3D Welding Table
5-side welding tables
Material:a. HT300 casting, b. Q355 steel plate welding, c. High hardness steel plate welding, d. Stainless steel plate welding.
Aperture:A=φ16.065--φ16.149mm.
Hole spacing:L1=50±0.05mm.
Engraving:Graduation line spacing W1=50±0.05mm.
Flatness:0.1/1000mm.
Verticality:0.05/200mm.
Roughness:Ra3.2.
Load-bearing:Standard type: 2T, frame type: 5T.
Hardness:Material body hardness.
Maintenance and Usage Taboos
• Cleaning: Use a copper brush to clean welding slag. Do not use a steel brush to scratch the surface.
• Moisture-proofing: If not used for a long time, apply antirust oil to avoid pitting corrosion of the nitrided layer caused by moisture.
• Prohibition of Modification: Do not drill/tap on the platform, as it will damage the integrity of the nitrided layer.
Comparison Table: D16 Cast Iron vs Q355 Steel Nitrided Fixture Platforms
| Feature |
D16 Cast Iron Nitrided Platform |
Q355 Steel Nitrided Platform |
| Vibration Damping |
Excellent (cast iron absorbs vibration) |
Moderate |
| Precision Stability |
Long-term stability (low thermal deformation) |
More affected by temperature changes |
| Load Type |
Ideal for static heavy loads |
Suitable for dynamic loads (e.g., robotics) |
| Cost |
Higher (complex casting+nitriding process) |
Relatively lower |
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Application scenarios
• Precision fields:
Welding of titanium alloy components in aerospace.
Positioning of optical equipment/semiconductor tooling.
Precision assembly of medical devices.
• Special requirements:
Occasions where magnetic interference needs to be avoided (cast iron is non-magnetic).
√ Wuxi Lemar Machinery Equipments Co., Ltd. is a high-tech enterprise specializing in automated welding equipment and H-beam equipment. Our company has developed a series of professional equipment such as CNC cutting equipment, Beveling equipment, welding equipment, etc.
√ On the basis of continuously absorbing advanced technologies and processes domestic and abroad,our products are widely used in pressure vessels, petrochemicals, power stations, heavy machinery, ships, steel structure buildings and other industries.Most of the products have reached advanced international levels.
√ Lemar Machinery has won the praise of users with the corporate spirit of "motivational and enterprising, honest and trustworthy", and is wi ling to work hand in hand with friends from all walks of life to realize its vision.
Q: What's the lead time for custom configurations?
A: Standard units ship in 3-5 business days. Custom builds require 2-3 weeks for production.
Q: Do you provide on-site installation?
A: Yes, our certified engineers offer global installation and calibration services.
Q: What warranty coverage is included?
A: 1-year limited warranty on mechanical components.
Shipping & Support
✓ FOB/CIF terms available
✓ DDU/DDP shipping to 50+ countries
✓ Trade assurance through PICC/Country bank
Enhance Your Welding Capabilities With Our D16 Cast Iron Fixture Table Nitrided Welding Platform For Delicate Applications!
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1. Material: D16 Cast Iron
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