19-Layer Variable Diameter Conical Spinning Parts

Manufactured from Q355D high-strength structural steel, the component integrates nineteen stepped diameter transitions ranging from φ585 mm to φ342 mm within a continuous spin forming cycle. Combined with EQS precision hole machining, CNC indexing control, and full-surface abrasive blasting, the part delivers repeatable forming accuracy and stable mechanical performance for demanding low-temperature industrial service environments.

Attributes

MaterialCarbon Steel
Thickness2mm
CoatingNone
SizeØ 130×140

Core Metal Spinning Process

Integral Variable-Diameter Spin Forming
The component is produced through continuous stepped-diameter metal spinning, enabling nineteen concentric conical transitions within a single forming sequence.

Flexible Shared-Tooling Manufacturing
A shared mandrel platform combined with parameter fine-tuning allows rapid specification changeover across nineteen diameter configurations without full tooling replacement, maximizing tooling efficiency and minimizing setup downtime.

Springback Compensation & Crack Prevention
Optimized deformation path control effectively compensates for springback while suppressing edge cracking and dimensional instability commonly encountered during Q355D high-strength steel spinning.

Precision Machining & Tolerance Control

EQS Hole Position Machining
Equally spaced hole distribution is achieved through CNC rotary table indexing for high-repeatability circumferential positioning accuracy.

Critical Precision Control

Hole positional tolerance ≤ ±0.05 mm
CNC indexing repeatability verification
Controlled stepped-diameter dimensional consistency
Stable concentricity across all transition layers
Guaranteed 19-stage stack alignment without displacement

Surface Treatment

Full-Coverage Abrasive Blasting
Internal and external surfaces receive complete abrasive blasting treatment for consistent industrial-grade surface preparation.

Surface Finish Characteristics

Uniform Ra 6.3 roughness
Oxide scale fully removed
Corrosion-free surface condition
Scratch-free visual finish
Clean internal cavity
No residual blasting contamination

Material Capability

Q355D High-Strength Structural Steel Forming
Dedicated process development ensures stable forming behavior for Q355D low-temperature structural steel under multi-stage deformation conditions.

Material Qualification Control

Negative thickness tolerance inspection
Mechanical property verification
Controlled deformation resistance compensation
Low-temperature toughness validation

Low-Temperature Reliability
The finished component maintains excellent structural toughness and dimensional stability under operating temperatures down to -20°C.

Technical Specifications

Parameter	Specification
Product Name	19-Stage Stepped Conical Component
Metal Spinning Process	Integral Variable-Diameter Spin Forming
Material Grade	Q355D High-Strength Structural Steel
Structure Type	Multi-Layer Stepped Cone
Maximum Diameter	φ585 mm
Minimum Diameter	φ342 mm
Hole Configuration	EQS Equally Spaced Holes
Hole Position Tolerance	±0.05 mm
Machining Method	CNC Rotary Table Indexing
Surface Treatment	Full-Surface Abrasive Blasting
Surface Roughness	Ra 6.3
Surface Condition	Oxide-Free / Scratch-Free / Residue-Free
Low-Temperature Service Rating	-20°C
Manufacturing Capability	Flexible Multi-Specification Changeover