Sodium-Based Wire Drawing Powder & Stearate Soaps
Engineered high-purity sodium stearate dry drawing lubricants formulated for severe thermal and interfacial friction conditions. Delivers high melting points (210°C to 250°C), continuous boundary film resilience, and 100% water-washable residues essential for high carbon spring wire, prestressed concrete (PC) wire, rope wire, and fine wire redrawing.
Direct supply from Ghaziabad plant with batch COA traceability, verified grain consistency, and 100% moisture protection.
Operational Technical Specifications
| Operational Metric | Engineering Specification & Behavioral Range |
|---|---|
| Physical Appearance / Form | Pure White to Off-White Fine Granular Free-Flowing Powder |
| Lubricant Base Chemistry | Sodium based |
| Maximum Continuous Drawing Speed | 15 - 20 m/s on Multi-Hole Continuous Drawing Benches |
| Suitable Substrates | High Carbon Steel (C: 0.45% - 0.85%), PC Strand, Spring Steel, Fine Wire |
| Die Wear Protection | Significantly Extends Die Life |
| Standard Packaging | 50 KG Net Multi-Wall HDPE Moisture-Barrier Bags with Inner Sealed Liner |
| Recommended Storage | Keep Elevated on Pallets in Dry Ambient Warehouse Away from Moisture |
Shop-Floor Operational Guidance
Practical machine-setup recommendations from over three decades of on-site wire mill technical troubleshooting.
1. Die Box Fluidity & Compaction Resistance
Sodium powders have high affinity for ambient humidity. Our custom grain sizing ensures consistent free-flow into the die reduction cone without tunneling or 'rat-holing', guaranteeing continuous powder replenishment even at wire speeds exceeding 15 m/s.
2. High-Temperature Boundary Lubrication
In high carbon wire drawing, interfacial temperatures inside the tungsten carbide die reach 200°C+. While conventional soaps char and decompose into abrasive carbon residue, our sodium stearate matrix transitions into a smooth viscous polymer melt that cushions the reduction cone.
3. Clean Water-Washability for Galvanizing & Annealing
Calcium soaps leave insoluble residues that foul galvanizing flux tanks and cause bare spots on zinc-coated wire. Sodium powder residues wash off rapidly in hot alkaline or fresh water baths, leaving a clean metallic surface ready for bright annealing or patenting.
4. Die Angle Matching & Reduction Optimization
For optimum performance with HC-1000 and HC-2000 grades, maintain an included die approach angle of 10° to 12° for high carbon wire with draft reductions between 18% to 22% per hole. Ensure adequate internal die cooling water flow (4-6 L/min per die block).
Request a 25kg Mill Trial Bag for Machine Testing
Validate lubricant pickup, die temperature moderation, and wire surface finish directly on your plant drawing blocks. Provide your wire grade, operating speed, and mill city for instant dispatch.
Frequently Asked Questions
help_outline What makes sodium-based wire drawing powder superior for high carbon wire compared to calcium powder?
High carbon drawing generates die interface temperatures exceeding 180°C. Calcium soaps soften and break down at 140°C-150°C, causing die pickup and scratches. Sodium stearate powder has a higher softening range of 210°C-250°C, maintaining film strength under extreme drawing forces while remaining easily washable in downstream tanks.
help_outline Can sodium wire drawing powder be washed off easily before hot-dip galvanizing?
Yes. Sodium stearate soaps are naturally water-soluble. Unlike water-insoluble calcium soaps, sodium drawing residue rinses cleanly in warm water or alkaline cleaning baths, preventing black spots and zinc peeling during galvanizing or electroplating.
help_outline What is the recommended storage life for sodium drawing powder in Indian mill conditions?
When stored in original sealed 50 KG HDPE moisture-barrier bags on raised pallets in a dry warehouse, the shelf life is 12 months. Die boxes should be covered during monsoon months to avoid moisture pickup.
help_outline How can our plant request a 25kg Mill Trial Bag for machine qualification?
You can request a 25kg trial bag directly via our WhatsApp desk (+91-9999818908). Please specify your wire carbon grade, input/output diameters, machine line speed, and your mill location.