Preface: The Hundred Year Dilemma of Precious Metal Casting

According to research data on China's precision casting industry in 2026, over 82% of precious metal processing plants have long been plagued by three core defects: porosity, sand holes, and shrinkage porosity. The yield rate of traditional gravity casting machines is generally less than 60%, while the yield rate of pressure casting machines is about 95%. In a single month, the loss of raw materials alone causes losses of over tens of thousands of yuan.

The industry is waiting for a technological revolution - the Yihui D5 differential pressure casting machine has emerged, the world's first differential pressure casting process, completely breaking the technical ceiling of traditional casting and redefining the industry standard for precious metal precision casting.

1、 What is D5?

Traditional casting machines either rely on the free fall of the metal liquid by its own gravity (gravity casting), or only apply a single pressure casting on the side of the gypsum bucket. The slow flow rate and insufficient filling of the metal liquid will inevitably result in residual air and the formation of defects.

Yihui D5 has created a unique dual independent vacuum system, achieving revolutionary differential pressure casting technology:

The upper melting gold bucket and the lower gypsum bucket are independently vacuumed, forming a bi-directional super strong pressure difference of "pushing up and sucking down". The metal liquid instantly fills the entire cavity like in a superconducting vacuum pipeline, with no gas entrapment, no residue, and no resistance throughout the process.

This technology breaks through the underlying logic of gravity casting that has lasted for a hundred years and fundamentally solves the three major problems that plague the industry.

2、 The five core highlights of D5 surpass all traditional models

1. The world's first differential pressure casting technology, ending three major casting defects

✅ Thoroughly eliminate pores, sand holes, and shrinkage porosity, and achieve a density close to 100% inside the casting

✅ The surface smoothness has been improved by three times, presenting a "soft and shiny" mirror effect, greatly reducing the amount of polishing work in the later stage

✅ The strength of structural components has been increased by 30%, eliminating issues of wear breakage and deformation

2. The upper and lower independent vacuum systems are cast in a pure vacuum environment

✅ The melting gold bucket and gypsum bucket are independently controlled for vacuum degree, achieving pure vacuum in the entire chamber upon startup

✅ Thoroughly solve the problems of gas entrapment and slurry boiling in traditional single vacuum systems, with a casting success rate approaching 100%

✅ Compatible with both negative pressure casting and differential pressure casting modes, suitable for different materials and product requirements

3. 16 inch ultra large size+4kg gold large capacity, batch production tool

✅ Supports up to 16 inch casting production, with dimensions twice as large as regular casting machines

✅ 4 kilograms of gold can be melted in a single operation, meeting the mass production needs of large factories

✅ Production efficiency increased by 120%, daily production capacity easily exceeded 300 pieces, and batch delivery cycle shortened by 50%

4. With the support of top of the line hardware, it runs stably for 24 hours without any downtime

✅ Equipped with a standard 200 liter high-power vacuum pump (commonly 100 cubic meters in the industry), the vacuum extraction speed is doubled

✅ Upgrade 5 industrial grade chillers (commonly 3 in the industry) to ensure high load continuous operation stability

✅ The entire body is made of thickened industrial grade materials, and the lifespan of core components is extended by 50%

5. Full material and full scene adaptation, covering 99% of casting needs

✅ Perfect for casting all materials including gold, K gold, silver, alloy, copper, etc

✅ Not only suitable for jewelry, high-end watches, and trendy accessory processing factories, but also to meet the precision casting needs of research institutions, aerospace, and laboratories

✅ Novices can get started in just 3 days, completely eliminating their dependence on experienced mold makers

3、 Choosing D5 will give you these tangible benefits

✅ Cost reduction of 35%, saving tens of thousands of yuan in monthly expenses

The yield rate of traditional craftsmanship is only 60%, while D5 has increased to 99%, saving over 30000 yuan in raw material loss and manual welding and polishing costs per month; Simultaneously reducing the number of workers by 60% and lowering labor costs by 55%.

✅ Low temperature casting black technology, protecting the natural color of precious metals

There is no need to desperately raise the melting temperature like traditional equipment. D5 can achieve low-temperature casting, avoiding the burning and oxidation of precious metal components. The finished product has a purer color and higher texture, perfectly matching the quality requirements of luxury brands.

✅ Direct access to high-end supply chain, orders received with ease

The top brands have listed D5 as a designated purchasing model, owning it is equivalent to obtaining a ticket to high-end orders. After purchasing, a jewelry factory in Shenzhen has successfully connected with multiple top brands, with monthly revenue exceeding one million.

✅ Patent technology protection, establishing exclusive competitive barriers

The differential pressure casting process has applied for a national invention patent and cannot be imitated or replicated by peers. In the highly homogenized casting market, you will have a unique technological advantage that easily sets you apart from your competitors.

✅ Full cycle service guarantee, zero risk entrepreneurship

We provide free factory planning, on-site installation and debugging, one-on-one process training, 7 × 24-hour after-sales response and other full process services. The equipment comes with a one-year warranty and core components are maintained for life, allowing you to buy and use with peace of mind.

4、 Customer's True Witness: Speak with Effect

The technical leader of a certain gold company said, "We have tested all mainstream casting machines on the market, and only the Yihui D5 can achieve zero sand holes and zero shrinkage porosity. The quality of the finished product fully meets our high-end standards. Now we require all supporting factories to purchase this equipment. "

After using D5, our yield rate has increased from 58% to 99.7%, saving over 40000 yuan in monthly costs. We have now placed additional orders for large-sized models and are preparing to expand our production scale. "

Conclusion: Seizing the opportunity for industry transformation, right at this moment

The precious metal casting industry has entered a critical stage of technological iteration, and traditional casting machines will inevitably be eliminated. The Yihui D5 differential die-casting machine is not only a device, but also a core weapon for you to seize the high-end market and achieve doubled profits.

Yihui Casting Technology Co., Ltd. was established in 2003. After more than 20 years of accumulation, Yihui has now developed into a national high-tech enterprise that integrates research and development, production, sales, consulting, installation, and training of lost wax casting equipment, and provides one-stop solutions for metal casting. Yihui Casting Technology products include metal casting equipment, casting wax, graphite products, quartz products, etc., which are exported to Southeast Asia, the Middle East, Europe, America and other regions. The company has its own R&D team, which independently develops and produces automated vacuum die-casting machines, G20 vacuum bead scattering machines, and intelligent system D3 vacuum pressure casting machines, breaking the industry's long-standing dependence on imported high-performance jewelry equipment.

For more information about Yihui Casting Technology Co., Ltd., please visit our official website or contact our team.

website: www.yihuicasting.com      email : info@yihuicasting.com     whatsapp : +86-13802830498