1.2344 / H13 Steel Cavity Inserts | Precision Core Sleeves for Injection Molds

Product Overview

Senlan Precision supplies front mold inserts and core sleeves made from 1.2344 (H13) tool steel, manufactured for injection molding applications requiring thermal stability, wear resistance, and dimensional consistency. These components are produced strictly to customer drawings and are suitable for multi-cavity molds operating under continuous production conditions.

Key Features & Technical Advantages

• Tool steel 1.2344 (H13) with good hot strength and toughness

• Stable hardness after heat treatment, suitable for long production cycles

• Precision CNC machining for tight dimensional control

• Compatible with multi-cavity and high-speed injection molds

• Optimized surface finish for reduced wear and stable demolding

• Built-to-Print / OEM manufacturing support

Application Scenarios / Industry Applications

• Bottle and container injection molds

• Packaging cap and closure molds

• Medical consumables and disposable molding tools

• Precision plastic components requiring stable cavity geometry

• Front mold (A-side) insert and core sleeve assemblies

Mold Structure & Design Description

Front mold inserts and core sleeves are installed on the cavity side of injection molds, directly defining the external or internal geometry of molded parts. Using 1.2344 tool steel ensures resistance to thermal fatigue and deformation during repeated heating and cooling cycles. Dimensions, fitting tolerances, venting features, and surface requirements are produced according to customer-supplied drawings.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision operates a dedicated precision machining line, including:

• MAKINO high-speed CNC machining centers (Japan)

• HARDINGE CNC turning and milling machines (USA)

• Precision grinding and polishing equipment

• Heat treatment coordination and hardness verification

These capabilities allow stable production of high-precision mold inserts and core sleeves.

Custom Development / OEM Cooperation Process

1. Customer drawing or technical specification review

2. Material and heat treatment confirmation

3. CNC machining and precision finishing

4. Dimensional inspection and fit verification

5. Final quality approval and packaging

All components are manufactured under OEM / Built-to-Print requirements.

Quality Control & Export Experience

• Incoming material inspection for 1.2344 steel

• In-process dimensional and surface checks

• Final inspection using precision measuring instruments

• Experience supplying mold components to international customers

• Export-grade packaging to prevent corrosion and damage

Related Products Recommendation

• H13 / 1.2344 cavity inserts for injection molds

• Core pins and core sleeves for multi-cavity molds

• Mold plates and insert assemblies

• Precision machined mold spare parts

FAQ – Technical & Procurement

Q1: What hardness range can be achieved for 1.2344 inserts?
Hardness is defined according to customer requirements after heat treatment, typically optimized for wear and thermal stability.

Q2: Can these core sleeves be used in multi-cavity molds?
Yes. They are suitable for high-cavity molds with stable thermal performance.

Q3: Do you accept non-standard designs?
Yes. All parts are manufactured strictly according to customer drawings.

Q4: What tolerances can be achieved?
Tolerances depend on part geometry and application and are controlled through CNC machining and grinding processes.

Q5: Are small batch or prototype orders supported?
Yes. Prototype and low-volume production are available.

Get a Quote

For pricing, lead time, or technical consultation on 1.2344 front mold inserts and core sleeves for injection molding, please contact Senlan Precision with your drawings or specifications. Our engineering team will respond with a detailed evaluation and quotation.