H13 Venting Core Pins for Medical Injection Molds with ±0.005mm Tolerance

H13 Venting Core Pins are specialized mold components designed to improve air evacuation in precision medical injection molds. These pins combine the functions of core formation and mold venting, allowing trapped air and gases to escape from the mold cavity during the injection process.

Manufactured from H13 hot-work tool steel, venting core pins provide high strength, excellent wear resistance, and stable performance under continuous injection molding cycles. Their micro-vent structure helps reduce common molding defects such as burn marks, short shots, and trapped gas, which are especially critical in medical-grade plastic parts.

These venting core pins are widely used in medical injection molds requiring high dimensional precision, stable molding conditions, and high cavity productivity.

During injection molding, molten plastic rapidly fills the mold cavity. If air or gas cannot escape efficiently, it may lead to defects such as burn marks, incomplete filling, or surface imperfections.

Venting core pins are designed to solve this problem by incorporating precision venting paths or micro-clearances that allow gas to escape while preventing plastic flash.

In medical injection molds, where components often have micro features and thin structures, effective venting becomes essential for maintaining consistent product quality.

Our H13 venting core pins are manufactured using precision CNC machining, micro grinding, and specialized finishing processes to ensure accurate venting gaps and stable structural strength.

• Made from H13 hot-work tool steel
• Integrated core forming and venting function
• Precision micro-vent structures for gas evacuation
• High resistance to wear, pressure, and heat
• Smooth surface finishing for stable molding cycles
• Designed for high-precision medical injection molds
• Custom dimensions and venting structures available
• Machining tolerance up to ± 0.005 mm

These characteristics help maintain consistent molding quality and reduce defect rates in medical production environments.

H13 venting core pins are commonly used in medical injection molds and high-precision plastic molding applications where proper cavity venting is essential.

Used in molds producing precision plastic components for medical devices requiring defect-free surfaces.

Applicable for molds producing laboratory plastic parts such as micro tubes, connectors, and diagnostic components.

Ideal for molds forming small cavities or micro features where air entrapment can affect molding quality.

Used in thin-wall molding processes where air evacuation must occur quickly during cavity filling.

Ensures stable molding performance across multiple cavities with consistent air venting.

Our manufacturing process ensures consistent quality for precision medical mold components.

• High precision CNC turning and micro machining
• Micro grinding and polishing
• Precision control of vent clearance structures
• Professional vacuum heat treatment
• Strict dimensional inspection
• Machining tolerance up to ± 0.005 mm

These processes ensure stable venting performance and long service life in demanding injection molding environments.

Venting core pins help release trapped air and gases during cavity filling, improving mold performance.

Proper venting reduces the risk of burn marks, short shots, and surface defects.

Reliable venting supports the continuous operation of high-cavity medical molds.

Better air evacuation results in smoother molded surfaces and consistent part quality.

Durable H13 material ensures long-term stability under repeated molding cycles.

To provide an accurate quotation for custom venting core pins, please provide:

• 2D drawings or 3D CAD files
• Core pin diameter and length
• Venting structure requirements
• Tolerance requirements
• Material specification (H13 or equivalent)
• Surface treatment or finishing requirements
• Order quantity
• Mold application details

Our engineering team will review your drawings and recommend suitable manufacturing solutions.