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Challenges in Processing Stainless Steel Materials | |
Challenges in Processing Stainless Steel Materials Processing stainless steel, particularly austenitic and martensitic grades like 1Cr18Ni9Ti and 2Cr13, presents unique challenges. Common issues include rapid tool wear, poor surface finish, and difficulty in chip removal. These problems impact production efficiency, product quality, and costs. Below is an analysis of these difficulties and solutions for improving drilling, reaming, and boring processes. Key Processing Challenges High Cutting Force and Temperature Stainless steel’s high strength and poor thermal conductivity lead to increased cutting force and heat. The heat concentrates near the tool edge, causing accelerated wear. Severe Work Hardening Austenitic stainless steel hardens significantly during cutting, often several times more than carbon steel. This shortens tool life when cutting through the hardened layer. Chip Adhesion Tough chips generated during cutting can stick and weld to the tool’s cutting edge, reducing surface quality. Tool Wear High plasticity and cutting temperature cause frequent tool wear, increasing the need for sharpening and replacement. Recommended Processing Techniques 1. Drilling Stainless Steel Tool Geometry Use high-speed steel (HSS) materials like W6Mo5Cr4V2Al. Increase the drill tip angle to 135°–140° to reduce chip size and improve chip removal. Sharpen the chisel edge to reduce cutting resistance, ensuring angles between 47°–55° for the bevel and 3°–5° for rake. Back angle should be 12°–15° for better heat dissipation. Cutting Parameters Cutting speed: 12–15 m/min. Feed rate: 0.32–0.50 mm/rev to balance tool life and surface quality. Cutting Fluid Use emulsions to lower cutting temperatures effectively. 2. Reaming Process Tool Design Use carbide reamers with fewer teeth to strengthen cutter teeth. Rake angles: 8°–12°; Back angles: 8°–12°. Select main deflection angles of 15°–30° for through holes and 45° for blind holes. Cutting Parameters Cutting speed: 10–20 m/min. Feed rate: 0.08–0.4 mm/rev, depending on material thickness. Cutting Fluid Employ molybdenum disulfide-based fluids for enhanced cooling and lubrication. 3. Boring Stainless Steel Tool Material Use cemented carbides like YW or YG for high strength and thermal conductivity. For fine machining, opt for ceramic tools like Sialon, which are heat-resistant and durable. CBN (Cubic Boron Nitride) tools are recommended for processing hardened stainless steel. Geometry Adjustments Rake angles: 10°–30° for rough to fine machining. Back angle: 5°–12° for optimal blade strength. Cutting Amounts Low speed with a high feed rate prevents work hardening. Cutting speed should prioritize minimizing tool wear and vibration. Cutting Fluid Use chlorine-rich cutting fluids for lubrication and improved cooling. Benefits of Improved Techniques By addressing the above challenges, tool life can be significantly extended, reducing the need for frequent sharpening. Additionally, production efficiency and surface quality improve, while labor intensity and costs are minimized. These methods ensure consistent and high-quality results when processing stainless steel materials.  | |
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| Target State: All States Target City : All Cities Last Update : Dec 17, 2024 4:00 AM Number of Views: 12 | Item Owner : TIANJIN TEDA GANGHUA Contact Email: Contact Phone: +86 22 86896631 |
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2024-12-19 (0.541 sec)