DONGHENG PrecisionCore: Pioneering the Next Generation of Foundry Efficiency

The Science of Precision: From Blowing to Shooting

A foundational shift in core making is the move from traditional blowing methods to advanced shooting techniques. As highlighted in recent technical forums, the distinction is critical for quality and efficiency. The ideal shooting process is remarkably fast, with optimal shoot times targeted at approximately 0.5 seconds-1. Dongheng's PrecisionCore machines are calibrated to achieve this benchmark, overcoming the common industry pitfall of "overblowing," where extended cycle times over 2 seconds lead to poor core quality and wasted energy-1.

The core of this precision lies in advanced venting and tooling optimization. Dongheng engineers have pioneered an integrated approach that combines overpressure shooting with a reduced-pressure (vacuum) venting system. This hybrid technology, supported by recent academic research, solves the classic problem of uneven sand density and "under-shooting" defects, particularly in complex or large cross-sectional core geometries-3. By actively pulling air out of the core box during filling, the sand mixture achieves a more uniform initial compaction, resulting in stronger, more dimensionally stable cores right from the first shot-3.

Driving Sustainability and Performance

Beyond precision, the environmental footprint of core production is a paramount concern. Dongheng's technology directly tackles this by optimizing amine consumption—a key binder component in many core sand mixtures. Industry best practice recommends a consumption rate of 1 gram of amine per 1 kilogram of mixed sand-1. Dongheng's systems are designed with closed-loop control and precision metering to consistently meet and maintain this efficient ratio, reducing both chemical usage and harmful emissions.

This commitment to sustainable innovation extends to material science. Dongheng machines are fully compatible with the latest inorganic binder systems, such as Cordis binders, which are gaining prominence for their environmental and workplace safety benefits-3. Furthermore, when compared to emerging alternatives like 3D printing for cores, advanced shooting technology demonstrates a significant advantage in terms of lower carbon dioxide evolution per unit produced, making it a more sustainable choice for high-volume manufacturing-1.

Engineered for the Future of Manufacturing

Dongheng Machinery's philosophy is rooted in deep industry engagement and continuous improvement. The insights from global technical lectures emphasizing a "Back to Basics and Forward into the Future" approach resonate deeply with our R&D ethos-1. We understand that the future of foundries lies in producing not just more, but better—with capabilities to manufacture massive, high-integrity cores weighing up to 2,500 kg in a single, flawless cycle-1.

Our machines are built to empower this future, transforming core shops into hubs of efficiency where quality is assured from the first blow, waste is minimized, and productivity scales to meet the demands of the world's most ambitious casting projects.