H13 (SKD61) Core Inserts | Precision Cosmetic Injection Mold Parts

Product Overview

The SKD61 die steel core insert is a precision mold component designed for cosmetic plastic injection molds requiring stable performance under repeated thermal and mechanical loads. Manufactured with controlled heat treatment and precision machining, this core insert ensures dimensional stability, wear resistance, and consistent molding quality in multi-cavity cosmetic mold applications.

Key Features & Technical Advantages

• SKD61 hot work die steel with balanced hardness and toughness

• Good resistance to thermal fatigue and mechanical wear

• Stable dimensional performance in high-cycle injection molding

• Precision machining for accurate fit with cavity and mold base

• Suitable for multi-cavity cosmetic injection mold structures

• Fully customized manufacturing based on customer drawings (Built-to-Print)

Applications & Industry Use

• Cosmetic packaging injection molds

• Bottle cap and closure molds for personal care products

• Multi-cavity plastic injection molds

• Mold systems requiring reliable core strength and thermal stability

Mold Structure & Design Description

The SKD61 core insert functions as a critical forming component within the cosmetic injection mold, directly influencing internal geometry and part consistency. The insert interfaces precisely with cavity inserts and mold plates. All structural details—including tolerances, surface conditions, and fitting dimensions—are manufactured strictly according to customer-provided drawings.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision produces SKD61 core inserts using controlled, high-precision machining processes:

• High-precision CNC milling and grinding from MAKINO

• CNC turning systems from HARDINGE

• Heat treatment and stress relief for dimensional stability

• EDM and fine finishing for complex geometries

All processes are executed under drawing-defined tolerances and technical specifications.

Custom Development & OEM Cooperation Process

1. Customer drawing and technical requirement review

2. Material confirmation and machining process planning

3. CNC machining, heat treatment, and finishing

4. Dimensional inspection and functional verification

5. Final packaging and export preparation

All projects are handled under OEM / Built-to-Print cooperation with no standard part limitations.

Quality Control & Export Experience

• Incoming SKD61 material inspection and traceability

• In-process dimensional control during machining

• Final inspection based on drawing tolerances

• Experience supplying mold components to overseas customers

• Inspection reports and measurement data available upon request

Related Products

• Cosmetic mold cavity inserts

• Threaded core inserts for plastic caps

• Multi-cavity mold spare parts

• Custom die steel mold components

FAQ (Technical & Purchasing)

Q1: Why is SKD61 suitable for cosmetic injection mold core inserts?
A: SKD61 offers good thermal fatigue resistance and mechanical strength, making it suitable for repeated injection cycles.

Q2: Can this core insert be used in multi-cavity molds?
A: Yes, it is commonly used in multi-cavity cosmetic mold systems.

Q3: Are surface finish and tolerances customizable?
A: Yes, all dimensions, tolerances, and surface requirements are produced according to customer drawings.

Q4: Do you support repeat orders and spare part supply?
A: Yes, repeat production and long-term spare part supply are supported.

Get a Quote

Please provide your drawings or technical specifications to Senlan Precision for a quotation on SKD61 die steel core inserts for cosmetic plastic injection molds.