Chemical Equipment Cavity Sleeve

Precision Metal Spun Nickel-Based Alloy Cavity Sleeve for Corrosion-Resistant Chemical Systems

1. Core Specifications (Chemical Engineering Grade)

• Application Industry: Chemical Processing / Petrochemical / Pharmaceutical Equipment
• Component Type: Cavity Sleeve / Inner Liner / Protective Insert
• Manufacturing Process: CNC Metal Spinning (Hot-Assisted Rotary Forming) + Pickling & Passivation

Material System (High-Performance Nickel Alloy)

• Base Material: Nickel-Based Alloy (Ni-Cr-Mo system, NACE MR0175 compliant)
• Formability Range: 0.5–20 mm (optimized for precision spinning)

Mechanical Properties (4.0 mm typical):

• Tensile Strength ≥ 800 MPa
• Excellent resistance to:
  • Acid corrosion (H₂SO₄ / HCl)
  • Alkali attack (NaOH)
  • Organic solvents

Engineering Advantages:

• Outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC)
• Stable performance in highly aggressive chemical media environments

Geometry & Precision

• Nominal Dimensions: Ø130 mm × H140 mm
• Dimensional Tolerance: ±0.1 mm
• Wall Thickness Uniformity: ≤ 0.08 mm
• Roundness: ≤ 0.05 mm/m

Fitment Performance:

• Designed for precision interference fit with chemical equipment cavities
• Eliminates micro-gaps → prevents media permeation and leakage

Surface Integrity

• Surface State: Uncoated (substrate corrosion resistance retained)
• Surface Roughness: Ra ≤ 1.6 μm

Functional Benefit:

• Reduced media adhesion and residue accumulation
• Improved cleanability (critical for chemical & pharmaceutical systems)

2. CNC Metal Spinning Process (Nickel Alloy Forming Technology)

Blank Preparation

• Process: 3000 W Fiber Laser Cutting
• Thickness Capability: ≤ 10 mm (nickel alloy plate)
• Accuracy: ±0.05 mm

Advantage:

• Burr-free edges → eliminates stress concentration before spinning

Core Forming Process (Thermo-Mechanical Spinning)

• Equipment: CNC250 Metal Spinning Lathes (16-machine cluster)
• Forming Method: Constant-temperature + multi-pass incremental deformation

Key Process Parameters:

• Forming Temperature: 200–250 °C
• Feed Increment: 0.08 mm/pass
• Multi-pass controlled deformation

Process Outcome:

• Seamless one-piece forming (no weld seams)
• Uniform wall thickness distribution
• Internal surface Ra ≤ 1.6 μm

Technical Advantage:

• Eliminates weld-induced corrosion risk
• Avoids micro-crevices typical in fabricated liners
• Ensures long-term sealing reliability in corrosive environments

Post-Processing (Corrosion Enhancement)

• Process: Pickling + Passivation

Function:

• Removes oxide scale from hot forming
• Activates protective passive layer (Cr₂O₃ film)

Performance:

• Stable corrosion resistance across pH 1–14 environments

3. Quality Assurance & Inspection (Chemical Equipment Standards)

Quality System

• ISO 9001:2015 Certified

Standards Compliance

• NACE MR0175 (corrosion resistance)
• ASME BPE (bioprocess equipment)
• ISO 15848-1 (leakage control)

Inspection Equipment

• CMM (DCC): Accuracy ±0.001 mm (full-dimension inspection)
• Ultrasonic Thickness Gauge: ±0.01 mm
• Metallographic Analysis: Grain structure & intergranular corrosion verification

Inspection Protocol

Incoming Material:

• Spectrometric analysis (Ni, Cr, Mo content verification)

In-Process Control:

• Thickness uniformity monitoring
• Forming integrity validation

Final Inspection:

• Airtightness test: 1.6 MPa → zero leakage
• Corrosion test:
  • 5% H₂SO₄ immersion, 48 h
  • Corrosion rate ≤ 0.01 mm/year

Quality Level:

• Overall defect rate ≤ 0.05%
• Full traceability per batch

4. Production Capacity & Delivery (Industrial Supply Capability)

Capacity

• 16 × CNC250 spinning lathes
• ≥ 50 pcs/machine/day
• Monthly capacity ≥ 2,000 pcs

Scalable Production:

• CNC600 machines available (Ø600 mm capability)
• Max capacity up to 3,000 pcs/month

Delivery Model

• Lead Time: ≤ 10 working days (standard orders)
• JIT Delivery: Supported
• VMI (Vendor Managed Inventory): Available

Benefit:

• Reduces customer inventory pressure
• Aligns with continuous chemical production cycles

Customization Response

• Engineering solution: within 24 hours
• Sample lead time: ≤ 5 days

5. Application Scenarios

Primary Applications

• Chemical reactors
• Distillation columns
• Media storage vessels

Functional Role:

• Internal corrosion protection
• Media isolation
• Structural reinforcement

Operating Capability

• Temperature Range: –20 °C to +300 °C
• Compatible Media:
  • Strong acids (H₂SO₄ / HCl)
  • Strong alkalis (NaOH)
  • Organic solvents

Performance Value

• Prevents media permeation
• Extends equipment service life
• Reduces maintenance downtime

6. Extended Applications

Pharmaceutical Equipment

• Reaction vessels compliant with GMP
• Smooth internal surface (Ra ≤ 1.6 μm) → no dead zones

Petrochemical Systems

• Sulfur-containing oil & gas transport
• Resistant to sulfide stress corrosion

Environmental Equipment

• High-concentration wastewater reactors
• Resistant to oxidizing agents and salt spray

7. After-Sales & Lifecycle Support

Warranty

• 24 months

Coverage:

• Corrosion perforation
• Dimensional deformation
• Internal surface degradation

Technical Support

• Installation & interference fit guidance
• Torque specifications for assembly
• Remote and on-site engineering support

Lifecycle Service

• Semi-annual condition tracking
• Annual corrosion inspection (key clients)
• Preventive maintenance recommendations

Emergency Response

• Priority production channel
• Emergency delivery as fast as 48 hours

Get a Quote

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