SKD61 (AISI H13) CNC Mold Core Inserts | High-Precision Plastic Mold Parts

Product Overview

SKD61 CNC Machined Mold Core Inserts are precision plastic mould components designed for high-load and high-temperature injection moulding applications. Manufactured by Senlan Precision using controlled CNC machining and heat treatment processes, these mold core inserts provide stable dimensional accuracy, wear resistance, and long service life. All components are produced strictly according to customer drawings for custom injection mould structures.

Core Features & Technical Advantages

• Material: SKD61 Hot Work Tool Steel
  Excellent thermal stability, toughness, and resistance to thermal fatigue

• High-Precision CNC Machining
  Tight dimensional control for cavity geometry and assembly interfaces

• Stable Heat Treatment Process
  Controlled hardness and minimal deformation after heat treatment

• Optimized Surface Quality
  Suitable for EDM, polishing, nitriding, or coating based on mould design

• Built-to-Print Manufacturing
  Fully customized dimensions, tolerances, and structural features per drawing

Application Scenarios / Industry Applications

• Plastic Injection Moulds

• Bottle Cap and Closure Moulds

• Packaging Mould Systems

• Medical Consumables and Disposable Moulds

• High-Cavity and Multi-Cavity Injection Moulds

These mold core inserts are widely used in moulds requiring consistent thermal performance and long production cycles.

Mould Structure & Design Explanation

Mold core inserts form the functional cavity geometry inside an injection mould.
In SKD61-based mould designs, core inserts are commonly applied to:

• High-wear cavity zones

• Areas exposed to elevated moulding temperatures

• Inserts requiring frequent replacement or maintenance

Using replaceable core inserts improves mould serviceability, reduces maintenance cost, and extends overall mould life.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision produces SKD61 mold core inserts through a controlled manufacturing process:

• CNC Milling and Turning for structural accuracy

• EDM Machining for complex cavity features and sharp internal corners

• Precision Grinding for datum surfaces and assembly fits

• Heat Treatment Control to reduce internal stress

• Dimensional Inspection using CMM and precision measuring tools

Typical tolerance capability: ±0.01 mm, tighter tolerances available upon request.

Custom Development / OEM Cooperation Process

1. Drawing & Specification Review
   2D/3D drawings, tolerance, and surface requirements confirmed

2. Process & Material Planning
   Machining route, heat treatment, and finishing methods defined

3. CNC & EDM Manufacturing
   Controlled production with in-process inspection

4. Final Quality Inspection
   Dimensional, hardness, and surface verification

5. Batch Supply & Long-Term Support
   Stable repeatability for mould maintenance and replacement programs

Quality Control & Export Experience

• ISO 9001 quality management system

• Full material traceability for SKD61 steel

• In-process and final dimensional inspection

• Controlled heat treatment verification

• Export experience supporting packaging and medical mould projects

Inspection reports and material certificates are available upon request.

Related Precision Mold Components (Internal Links)

• Precision Mold Inserts

• Mold Core Pins

• Injection Mold Cavities

• Mold Sliders and Wear Inserts

• Precision Mold Components

Frequently Asked Questions (FAQ)

Q1: Why is SKD61 suitable for mold core inserts?
A: SKD61 provides excellent toughness and thermal fatigue resistance, making it suitable for injection moulds operating under repeated heating and cooling cycles.

Q2: Can these core inserts be EDM-machined?
A: Yes. SKD61 mold core inserts are suitable for EDM machining and complex cavity structures.

Q3: Do you support custom sizes and tolerances?
A: All products are manufactured strictly according to customer drawings with defined tolerances.

Q4: Can surface treatment be applied?
A: Yes. Polishing, nitriding, and coating options can be applied based on mould requirements.

Request a Technical Quotation

For custom SKD61 CNC mold core inserts, technical drawings, or OEM cooperation, please contact Senlan Precision.
Our engineering team will review your application requirements and provide a detailed technical quotation.