How Vacuum Pressure Casting WorksVacuum pressure casting machine technology evacuates the mold chamber to 0.01-0.05 MPa residual pressure before injecting molten metal under controlled positive pressure of 0.1-0.2 MPa. The vacuum phase removes oxygen and trapped gases from the investment mold cavity, while the subsequent pressure injection forces metal into every detail of the pattern — including filigree channels thinner than 0.3mm and micro-settings requiring ±0.05mm dimensional accuracy.The process cycle typic···...

How to Match Casting Machine Type to Your Jewelry Metal and Production VolumeSelecting the right casting machine is not just a technical decision — it is a strategic investment that determines your defect rate, material loss, and production capacity for years to come. At Yihui Casting Technology, with 21+ years serving 5,000+ manufacturers across 60+ countries, we have seen workshops lose 8-15% of their precious metal inventory to mismatched equipment. This guide provides a systematic framework for matching castin···...

Why Vacuum Casting Eliminates Common Jewelry DefectsTraditional gravity casting leaves air pockets, porosity, and incomplete fills — especially in intricate filigree and micro-detail jewelry designs. Vacuum pressure casting machine technology solves these problems by evacuating the mold chamber before injecting molten metal under controlled pressure (up to 0.2 MPa).Defect Reduction by the NumbersPer ASTM B928 testing standards, vacuum-cast jewelry achieves porosity levels below 0.5% — compared to 3-8% for convent···...

Why Modern Jewelry Casting Equipment MattersThe jewelry manufacturing industry has undergone a significant transformation over the past two decades. From hand-crafted methods to precision-driven vacuum pressure casting machine technology, the shift toward modern equipment is not just a trend—it is a measurable improvement in quality, efficiency, and profitability.5 Key Benefits of Vacuum Pressure Casting Technology1. Superior Cast Quality with Reduced PorosityTraditional gravity casting methods often produce jewel···...

Complete Guide to Jewelry Casting Equipment: Essential Tools for Professional Jewelry ManufacturingIntroduction to Jewelry Casting EquipmentJewelry casting is one of the most fundamental processes in the jewelry manufacturing industry, transforming raw precious metals into intricate and beautiful designs. The quality of the final product heavily depends on the jewelry casting equipment used throughout the process. From small artisan workshops to large-scale manufacturing facilities, having the right equipment ensur···...

Yihui Casting, which focuses on the research and development of precious metal casting and forming equipment, has launched a fully automatic hydraulic press for gold coins and commemorative coins. It provides intelligent, high-precision, and high-efficiency integrated solutions for precious metal pressing and forming for global precious metal refineries, professional mints, and cultural and creative commemorative medal customization enterprises.With the booming development of the global precious metal investment ma···...

Introduction: Why Vacuum Matters in Modern Injection TechnologyIn modern manufacturing, especially in precision molding industries such as plastic injection molding, rubber molding, and jewelry casting, vacuum technology plays a critical role in ensuring product quality, consistency, and structural integrity. The injection process is highly sensitive to trapped air, moisture, and volatile gases inside the mold cavity. Without proper air removal, even the most advanced injection systems can produce defective parts w···...

Two core techniques have traditionally defined jewelry manufacturing: handcrafting and lost-wax casting. While both methods deliver high-quality results, they demand extensive craftsmanship, are highly time-consuming, and leave little room for error—where even small mistakes can result in costly material and production losses.Today, however, digital design and 3D printing technologies are reshaping these traditional workflows. By integrating jewelry 3D printing into established production processes, manufacturers ···...

New Trends in the Precious Metals Industry | Yihui Casting Desktop&Handheld Gold Testing Machine Helps Precise Gold DetectionGlobal gold consumption and precious metal trade continue to heat up, with jewelry customization, used gold recycling and circulation, precious metal raw material processing, cross-border gold trading and other tracks flourishing. With the continuous expansion of the market volume, industry pain points such as material adulteration, purity non-compliance, and non-standard testing have bec···...

Global precious metal collection and investment market continues to heat up, with gold coins, gold nuggets, and commemorative coins becoming the core choices for overseas collectors and institutional investors due to their preservation properties and cultural value. Exquisite casting techniques and high-end packaging design have become key factors determining the competitiveness of product markets. Yihui Foundry deeply cultivates overseas markets, focusing on the casting of gold coins, gold nuggets, and commemorati···...