Corrosion-Resistant Core Inserts | Precision Ground Hot Runner Parts

Product Overview

Corrosion-resistant inner grinding rounding core inserts are precision mold components designed for hot runner injection mold systems. These inserts feature controlled internal grinding accuracy and optimized roundness to ensure stable melt flow, reliable demolding, and long-term dimensional stability under high-temperature and corrosive processing environments.

Key Features & Technical Advantages

• Inner grinding process for high roundness and concentricity

• Corrosion-resistant material options for aggressive molding conditions

• Stable geometry under hot runner thermal loads

• Precision rounding profile to support uniform melt flow

• Suitable for high-cycle and multi-cavity mold systems

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

Applications & Industry Use

• Hot runner injection mold systems

• Bottle cap and closure molds

• Packaging container and liquid dispensing molds

• Medical plastic injection molds requiring corrosion resistance

Mold Structure & Design Description

The rounding core insert is positioned in critical flow and forming areas of the hot runner mold. Its internal geometry, roundness, and surface integrity directly influence melt distribution, cavity balance, and demolding reliability. Designs are customized according to mold structure, runner layout, and material behavior defined in customer technical drawings.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision manufactures inner grinding rounding core inserts using controlled precision processes:

• High-accuracy CNC machining centers from MAKINO

• Precision turning and milling systems from HARDINGE

• Internal grinding for roundness and concentricity control

• EDM and fine finishing for complex internal geometries

All processes are executed strictly according to drawing specifications.

Custom Development & OEM Cooperation Process

1. Drawing review and technical feasibility evaluation

2. Material and corrosion-resistance requirement confirmation

3. CNC machining and inner grinding processing

4. Dimensional inspection and functional verification

5. Cleaning, identification, and export-grade packaging

All components are supplied under OEM / Built-to-Print cooperation.

Quality Control & Export Experience

• Incoming material inspection and traceability

• In-process dimensional monitoring

• Final inspection based on drawing tolerances

• Stable supply experience for international mold manufacturers

• Inspection reports available upon request

Related Products

• Hot runner system mold inserts

• Mold core inserts and cavity inserts

• Thread core inserts for injection molds

• Custom non-standard mold spare parts

FAQ (Technical & Purchasing)

Q1: What level of roundness can be achieved with inner grinding?
A: Roundness and concentricity are controlled according to drawing requirements and application needs.

Q2: Are corrosion-resistant materials mandatory?
A: Material selection is based on customer specifications and molding environment.

Q3: Can this insert be used in multi-cavity hot runner molds?
A: Yes, it is suitable for high-cavity and balanced hot runner systems.

Q4: Do you support replacement or spare part orders?
A: Yes, replacement and spare part manufacturing is supported.

Get a Quote

Please send your drawings or technical specifications to Senlan Precision to receive a quotation for corrosion-resistant inner grinding rounding core inserts for hot runner injection molds.