Featured Technology

ZHENGTEK™

Advanced Lost Foam technology for suitable large, intricate, and geometrically complex castings.

Making complex casting routes more practical and economically scalable.

The Application Challenge

When Conventional Wax-Pattern Production Becomes Difficult to Scale

Large and intricate castings can make conventional synthetic-wax pattern routes costly, cumbersome, or operationally complex. Pattern distortions during handling, high wax shrinkage variations, and astronomical multi-segment die tooling costs often restrict investment casting to smaller geometries.

ZHENGTEK™ combines expendable polymer foam pattern technology with engineered negative-pressure process control to provide a robust and practical manufacturing route for suitable demanding applications.

The system seamlessly integrates precision pattern production, refractory coating control, specialized vacuum differential moulding, and metallurgical pouring around the component geometry and production volume objectives.

Process Concept

An Integrated Engineered Route

A clear, engineered sequence connects the expendable foam pattern to mould preparation, vacuum stabilization, controlled pouring, and casting recovery.

01

Foam Pattern Engineering

Segmented EPS/STMMA pattern molding with internal geometry optimization and shrinkage compensation.

02

Assembly, Coating & Drying

Automated cluster assembly, high-permeability refractory ceramic coating, and dehumidified heat pump curing.

03

Vacuum Moulding & Pouring

3D multidirectional sand compaction, continuous vacuum differential negative pressure, and controlled laminar filling.

04

Cooling, Recovery & Review

In-mould controlled cooling, binderless sand shakeout, non-destructive metallurgical inspection, and 95%+ sand reclamation.

Where ZHENGTEK™ Fits

Candidate Application Assessment

Engineering assessment evaluates component dimensions, wall thickness, metallurgical alloy, current pattern route, annual production volumes, quality criteria, and available plant infrastructure.

Engineering Review Inputs

• 2D Drawing or 3D CAD

• Material / Alloy Grade

• Approximate Weight

• Annual Production Target

• Current Casting Route

• Critical Quality Class

Process Advantages

Key Objectives & Measurable Benefits

✓ Large & Complex Geometries: Practical capability for castings exceeding typical investment casting dimensions.
✓ Wax Pattern Elimination: Eliminates synthetic-wax tooling expense, distortion, and fragile assembly procedures.
✓ Improved Pattern Practicality: Low-density expendable foam patterns offer structural rigidity during handling.
✓ Reproducible Process Objectives: Controlled vacuum pressure profiles ensure repeatable molten metal filling.
✓ Integrated Turnkey Systems: Complete coordination of tooling, pre-foaming, coating, vacuum, and sand recovery.

Start Engineering Enquiry

Could ZHENGTEK™ Fit Your Casting?

Send your drawing and production requirements for an engineering review. Our metallurgists will analyze whether ZHENGTEK™ provides the right technical and economic fit for your component.

Start WhatsApp Enquiry with Vinay Online Evaluation Form →

ZHENGTEK™ is presented as a trademark. Suitable applications require engineering review.