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Introduction
In our titanium wire drawing production line design, the surface stripping system (also referred to as a peeling system or descaling system depending on the process stage and surface condition) is configured as a dedicated process module within the overall line architecture. It is positioned according to the production route, typically before fine drawing sections, annealing units, or flattening stages, based on material grade and process requirements.
This module is not treated as an auxiliary or optional machine. It is fully integrated into the production line as a controlled surface conditioning section to ensure stable deformation behavior in continuous operation.
During processing, titanium wire surfaces inevitably develop oxide layers, work-hardened outer skins, and localized surface contamination caused by previous drawing passes and thermal exposure. If these surface conditions are not properly controlled within the line, they will directly affect friction stability, die wear rate, annealing consistency, and downstream forming performance.
Therefore, in our engineering definition, the surface stripping system, peeling system, and descaling system are considered functional equivalents within the surface conditioning section of the titanium wire production line. The final configuration is determined together with material grade, wire
1. Engineering Function of Surface Stripping System
The titanium wire surface stripping system is designed to control and stabilize the outer surface condition of the wire throughout continuous production.
Its main engineering functions include:
- Removal of oxide layers formed during annealing or exposure
- Removal of hardened surface layers from multi-pass drawing
- Stabilization of friction coefficient between wire and dies/rollers
- Improvement of surface uniformity before fine drawing or flattening
- Preparation of wire surface for controlled annealing behavior
In continuous production lines, surface condition is a stability parameter, not a cosmetic requirement.
Material-Based Process Selection
Different titanium grades require different stripping strategies due to differences in hardness, oxidation behavior, and surface sensitivity.
2.1 Commercially Pure Titanium (Gr1 / Gr2 / Gr3 / Gr4)
Typical wire diameter range: 0.2 – 6.0 mm
Application: medical wire, chemical wire, industrial forming wire
Process characteristics:
- Fast oxidation tendency at elevated temperature
- Moderate hardness after drawing
- High sensitivity to surface damage
Recommended system configuration:
- Mechanical peeling system (roller or blade type)
- Light brushing conditioning unit
- Optional mild descaling module
Engineering parameters:
- Surface removal depth: 5 – 30 μm
- Contact pressure: 0.1 – 0.6 MPa
- Line speed: 20 – 120 m/min
- Surface roughness target (Ra): 0.3 – 1.2 μm
Engineering principle: CP titanium requires uniform surface conditioning rather than aggressive material removal.
2.2 Titanium Alloy (Ti-6Al-4V / TC4)
Typical wire diameter range: 0.3 – 4.0 mm
Application: aerospace wire, implant wire, high-strength flat wire
Process characteristics:
- High strength after deformation
- Low tolerance to surface damage
- Sensitive to hydrogen and micro-crack initiation
Recommended system configuration:
- Low-damage mechanical stripping system
- Precision brushing module
- Controlled cleaning section (dry or inert assisted)
Engineering parameters:
- Surface removal depth: 3 – 20 μm
- Contact pressure: 0.05 – 0.3 MPa
- Vibration limit: ≤0.02 g
- Surface defect removal efficiency: >95%
Engineering principle: TC4 requires strict control of mechanical stress on the surface layer.
2.3 Near-β Titanium and High-Performance Alloys
Typical wire diameter range: 0.1 – 3.0 mm
Application: aerospace structural wire, defense-grade wire
Process characteristics:
- Extremely narrow process window
- High sensitivity to surface defects
- Strong dependence on thermal history
Recommended system configuration:
- Ultra-low contact mechanical stripping system
- Precision micro-brushing module
- Inert gas or controlled environment cleaning system
Engineering parameters:
- Surface removal depth: 2 – 10 μm
- Contact pressure stability: ±2%
- Surface consistency deviation: ≤5%
- Alignment precision: ≤0.1 mm
Engineering principle: surface integrity is more critical than material removal rate.
Surface Stripping System Types
3.1 Mechanical Peeling System
Main industrial solution for titanium wire lines.
Structure:
- Multi-roller peeling section
- Centerless wire guiding system
- Adjustable blade/roller contact mechanism
Capability:
- Continuous operation up to 150 m/min
- Stable removal of oxide layer and hardened skin
- Suitable for medium and large diameter wire
3.2 Brushing / Polishing System
Used for fine surface conditioning before precision forming.
Functions:
- Reduce micro-surface irregularities
- Stabilize friction coefficient
- Improve flattening stability
Brush speed range:
- 800 – 3500 rpm
3.3 Hybrid Stripping & Descaling System
Used in high-end titanium production lines.
Configuration:
- Mechanical stripping + controlled cleaning zone
- Optional chemical or inert gas assisted section
Functions:
- Remove annealing oxide layers
- Stabilize surface energy before furnace entry
- Improve annealing atmosphere consistency
Process Integration in Production Line
Surface stripping is a key interface between deformation and thermal processes.
In wire drawing sections:
- Reduces die wear by stabilizing friction conditions
- Prevents surface tearing during high reduction passes
- Improves high-speed drawing stability
In annealing sections:
- Ensures uniform oxidation behavior
- Prevents localized furnace contamination
- Improves thermal consistency across wire length
In flattening sections:
- Reduces edge cracking probability
- Improves roll contact stability
- Enhances final surface finish of flat wire
Technical Parameters of Surface Stripping System
5.1 Mechanical System Parameters
| Parameter | Range |
| Wire diameter range | 0.1 – 6.0 mm |
| Contact pressure | 0.05 – 0.6 MPa |
| Alignment accuracy | ≤0.3 mm |
| Vibration level | ≤0.02 g |
| Material removal depth | 2 – 50 μm |
| Line speed | 10 – 150 m/min |
5.2 Surface Quality Control Parameters
| Parameter | Target |
| Surface roughness (Ra) | 0.2 – 1.5 μm |
| Defect removal efficiency | ≥95% |
| Surface consistency deviation | ≤5% |
| Friction stability variation | ≤3% |
5.3 System Synchronization Parameters
| Parameter | Requirement |
| Drawing tension fluctuation | ≤±2% |
| Speed synchronization error | ≤±1.5% |
| Continuous operation stability | ≥720 hours |
| Entry/exit alignment offset | ≤0.3 mm |
Engineering Selection Rules
Rule 1 – Material determines stripping intensity
- CP titanium → medium mechanical stripping
- TC4 → low-damage precision stripping
- β alloys → ultra-low contact hybrid system
Rule 2 – Diameter determines system structure
- 2.0 mm → roller peeling system
- 0.5 – 2.0 mm → combined stripping + brushing
- <0.5 mm → precision micro-stripping system
Rule 3 – Downstream process determines surface target
- Drawing → friction stability priority
- Annealing → oxidation control priority
- Flattening → surface uniformity priority
Conclusion
The titanium wire surface stripping system is a core process module in modern wire production lines. It is not an independent machine selection, but an integrated engineering function within the production architecture.
Correct system design ensures stable friction behavior, controlled surface condition, reduced tooling wear, and consistent downstream forming performance.
We provide complete titanium wire production line engineering solutions with integrated surface stripping systems designed according to material grade, wire diameter, and process requirements.
Contact us
We design and manufacture complete titanium wire production lines, including mechanical peeling systems, drawing machines,rolling mills,annealing system,precision brushing units, and hybrid surface conditioning modules.
System design is customized based on:
- Titanium grade (Gr1–TC4–β alloys)
- Wire diameter range
- Line speed and reduction schedule
- Final product requirements
Contact us for full engineering design and turnkey production line solutions.