H13 Steel Core Inserts | Precision Wire EDM Parts for Consumer Packaging Molds

Product Overview

Senlan Precision supplies H13 polished core insert parts manufactured by wire cutting (WEDM) for daily packaging plastic injection molds. Produced strictly to customer drawings (OEM / Built-to-Print), these core inserts are designed for stable mold operation, consistent surface quality, and reliable dimensional accuracy in high-cavity packaging applications.

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Key Features & Technical Advantages

• H13 hot work die steel with balanced toughness and wear resistance

• Wire cutting (WEDM) for precise profiles and sharp edges

• Polished functional surfaces to support stable plastic flow

• Good thermal stability for continuous injection molding cycles

• Suitable for multi-cavity and high-output packaging molds

• Manufactured strictly to drawings with controlled tolerances

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Application Scenarios / Industry Applications

• Daily packaging plastic injection molds

• Bottle caps, closures, and functional packaging components

• Multi-cavity packaging mold tooling

• Mold core inserts requiring stable geometry and surface finish

• Injection molds for household and industrial packaging products

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Mold Structure & Design Description

The H13 polished core insert functions as a key forming element inside the mold cavity, shaping internal or functional features of the plastic part. Wire cutting is applied to achieve accurate outer profiles and fitting interfaces, while polishing ensures controlled surface conditions. The insert is designed to integrate seamlessly with cavity blocks, sleeves, or core plates according to the mold structure.

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Manufacturing Capability & CNC Machining Capacity

Senlan Precision maintains a complete in-house precision manufacturing system:

• MAKINO high-precision CNC machining centers (Japan)

• HARDINGE CNC turning equipment (USA)

• Wire EDM (WEDM) and sinker EDM processes

• Precision grinding and surface polishing

• Typical achievable tolerances: ±0.003 mm to ±0.01 mm, depending on structure

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Custom Development / OEM Cooperation Process

1. Customer drawing review and technical confirmation

2. Material selection (H13 or equivalent per specification)

3. Wire cutting (WEDM) and CNC machining

4. Polishing and dimensional finishing

5. Inspection and quality verification

6. Export packing and shipment

All parts are supplied under OEM / Built-to-Print manufacturing mode.

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Quality Control & Export Experience

• Incoming material inspection with traceability

• In-process inspection during wire cutting and finishing

• Final dimensional and visual inspection before delivery

• Stable export experience serving international mold makers and packaging suppliers

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Related Products Recommendation

• Plastic mold cavity inserts

• Core pins and ejector components

• Threaded cores and sleeves

• Custom mold spare parts for packaging molds

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FAQ – Technical & Procurement

Q1: Why is H13 used for packaging mold core inserts?
H13 offers good thermal stability, strength, and wear resistance, making it suitable for continuous injection molding.

Q2: What is the advantage of wire cutting for core inserts?
Wire cutting enables accurate profiles, tight tolerances, and clean edges that are difficult to achieve by conventional milling.

Q3: Are these parts standard or off-the-shelf?
No. All parts are custom-manufactured to customer drawings.

Q4: Can polishing level be specified?
Yes. Surface finish is controlled according to drawing or technical requirements.

Q5: Do you support export-ready packaging?
Yes. All products are packed to meet international shipping standards.

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Get a Quote

For pricing or technical consultation on H13 polished core insert parts with wire cutting for daily packaging plastic molds, please contact Senlan Precision with your drawings or specifications. Our engineering team will provide a clear OEM manufacturing solution.