Precision Punch Pins & Mold Components

Product Overview

Precision Punch Pins and high-hardness tooling components are critical wear parts in high-speed metal stamping dies.
They are widely used in progressive dies, fine blanking tools, and precision forming applications where dimensional accuracy and fracture resistance are essential.

We manufacture custom precision punch pins and tooling components on a Built-to-Print basis, focusing on:

• Wear resistance

• Fracture toughness

• Dimensional stability

• High-speed stamping reliability

These components are designed for consistent performance under repeated impact and high-cycle production conditions.

Why Punch Pin Quality Matters in High-Speed Stamping

In mass production stamping lines, punch pins are subject to:

• Repeated high-impact loading

• Side load from misalignment

• Friction heat buildup

• Material adhesion and galling

Common failure modes include:

• Sudden chipping or snapping

• Progressive wear leading to burr formation

• Eccentric wear due to poor concentricity

• Coating flaking under thermal stress

Tooling quality directly affects production uptime and part consistency.

Key Manufacturing Focus

1) Material Selection & Metallurgical Control

We work with high-performance tool steels and carbide materials, including:

• SKH51 / M2

• ASP23 / Vanadis 23

• Tungsten Carbide

Material selection depends on:

• Punching force

• Sheet thickness

• Workpiece material hardness

• Stroke frequency

Heat treatment is performed under controlled vacuum conditions, followed by multiple tempering cycles to ensure uniform hardness and microstructure stability.

Optional sub-zero treatment is available to improve dimensional stability and reduce retained austenite.

2) Concentricity & Cylindricity Control

In high-speed stamping, even minor eccentricity leads to uneven wear.

We ensure:

• Concentricity within ±0.002 mm

• Tight cylindricity control

• Stable guide fit

Precision centerless grinding and jig grinding processes are applied to maintain smooth sliding performance in guide bushes.

Stable geometry reduces internal stress and extends service life.

3) Surface Finish & Coating Engineering

To reduce friction and galling:

• Mirror polishing (Ra 0.05–0.1)

• PVD coatings such as TiCN, AlTiN, and DLC

Surface preparation includes ultrasonic cleaning and ion treatment before coating, ensuring strong bonding and resistance to flaking.

Proper surface engineering significantly reduces heat buildup and adhesive wear.

Technical Specifications

Materials:
SKH51, M2, ASP23, Vanadis 23, Tungsten Carbide

Hardness:
62–64 HRC (Tool Steel)
Up to 90 HRA (Carbide)

Tolerance Capability:
Up to ±0.001 mm (depending on geometry)

Surface Finish:
Mirror finish Ra 0.05–0.1

Geometry Types:
Straight, Stepped, T-Shape, Ball-Lock, Pilot Pins

Compatibility:
Interchangeable with Dayton, Lane, Misumi, Fibro standards upon request

Application Industries

Our precision punch pins and tooling components are used in:

• Automotive stamping (terminals, brackets, connectors)

• Electronics and telecommunication stamping

• Medical precision tooling

• Aerospace fastener forming

• Fine blanking and micro-stamping applications

These industries require long service life and stable dimensional performance.

Quality Control & Documentation

Each batch includes:

• Material certification

• Hardness verification

• Dimensional inspection report (CMM or micrometer)

• Surface roughness confirmation when required

Our ISO 9001-based workflow ensures consistent repeat production.

OEM & Custom Manufacturing

We support:

• Custom profiles based on drawings

• Rapid prototyping for special geometries

• High aspect-ratio micro punch pins (down to 0.2 mm diameter)

• Small-batch and mass production

All components are manufactured strictly according to customer specifications.

Technical FAQ

Q1: How do you prevent punch pin chipping?
Through proper material selection, controlled vacuum heat treatment, and optimized edge geometry to reduce stress concentration.

Q2: Can you produce micro punch pins below 0.5 mm diameter?
Yes. Micro punch pins down to 0.2 mm are supported, with strict straightness and stiffness control.

Q3: How do you ensure coating adhesion?
Surface cleaning and ion pre-treatment are applied before PVD coating to ensure strong bonding under thermal and mechanical stress.

Q4: Do you support carbide punch pins?
Yes. Tungsten carbide options are available for high wear resistance and extreme hardness applications.

Request a Technical Quote

Send your drawings (STEP, DWG, PDF) with material and hardness requirements.
Our engineering team will review your application and provide a manufacturing proposal.