SHENZHEN, China, Nov. 10, 2026 /PRNewswire/ -- Hasung, an experienced jewelry casting machine manufacturer, launched two new jewelry vacuum pressure casting machines in June, catering to different production needs: the mini semi-automatic HS-VPC.S with a gold capacity of 1 kg, and the fully automatic HS-VCT3 with a gold capacity of 3 kg. These two machines are designed for small-batch jewelry production and more automated precision casting applications respectively, providing jewelry manufacturers with more equipment options.

Meeting the Evolving Needs of Jewelry Manufacturers

Jewelry manufacturing involves various production scenarios. Independent studios and small-to-medium processing enterprises typically require compact equipment suitable for small-batch production to meet the needs of sample development, processing of various precious metals, and flexible production. At the same time, fine jewelry casting places high demands on the control of alloy properties, mold conditions, and process parameters. A jewelry casting study published in Special Casting & Nonferrous Alloys also points out that these factors are closely related to the prevention of casting defects such as shrinkage cavities and porosity.

This indicates that jewelry manufacturers should select appropriate processing equipment based on their production scale and jewelry design. In response, Hasung developed the HS-VPC.S and HS-VCT3,  tailored to the diverse requirements of jewelry manufacturing.

Founded in 2014, Hasung specializes in heating, melting, and casting equipment for precious metals and new materials. By providing equipment solutions for different applications, the company continues to expand its product portfolio in the fields of jewelry processing and precious metal manufacturing.

Two New Machines for Flexible Production and Precision Jewelry Casting

The HS-VPC.S is a mini semi-automatic jewelry vacuum pressure casting machine, suitable for small-batch production in jewelry studios, workshops, and small factories. It measures 590×570×800 mm in size and weighs approximately 120 kg, offering flexibility in terms of equipment footprint and single-processing capacity.

It can be used to process gold, karat gold, silver, copper, various alloys, and supports the use of argon or nitrogen as protective gases. This equipment provides a relatively compact option for users who need to process multiple materials, make samples, or produce small batches of jewelry.

For manufacturers requiring higher levels of automation and larger processing capacity, the HS-VCT3 offers an alternative solution. This equipment features one-button fully automatic operation, equipped with a WEINVIEW interface and a Siemens PLC intelligent control system. It has a rated power of 12 kW, a melting time of approximately 2–3 minutes, and casting pressure adjustable within 4 bars.

The HS-VCT3 is designed for applications requiring high precision in casting details and process control. It can be used for the production of fine filigree, lightweight gold jewelry, and complex jewelry designs. Its automated control system coordinates multiple key steps in the casting process, reducing reliance on repetitive manual operations.

The two machines differ not only in capacity, but also in their levels of automation, specifications, and applicable production scenarios. Manufacturers can choose the machine that best suits their production processes based on batch size, material type, and process complexity.

Vacuum Pressure Casting Technology for Better Quality

Vacuum pressure casting is a process used in precious metal jewelry manufacturing to improve metal filling conditions. During the casting process, the equipment uses a vacuum environment, inert gas protection, and pressure difference to help molten metal enter the fine structure of the mold. This process can reduce the risk of problems such as bubbles, porosity, and incomplete filling.

The HS-VPC.S employs technologies such as medium frequency heating, automatic frequency tracking, electromagnetic stirring, and PID temperature control. It integrates melting and casting chambers into a single design, and is equipped with a built-in vacuum pump and corresponding control functions to support vacuum pressure casting and management during equipment operation. This model has a maximum temperature of 1500 °C and a maximum pressure of 0.3 MPa.

The HS-VCT3, on the other hand, utilizes an automated control system. Accommodating flasks up to 5" × 16", its double-chamber system generates a pressure difference to facilitate metal filling, while the bottom-pouring mechanism transfers molten metal from the crucible into the mold, supporting the casting of fine gold paper and lightweight jewelry.

In addition, its gas-wash procedure purges oxygen from the chambers before refilling them with argon or nitrogen, helping reduce gas consumption and minimize alloy oxidation.

With temperature control accuracy of ±1°C, adjustable casting pressure and components from famous brands such as SMC, Shinko Technos, AIRTEC, Shimaden and Schneider Electric, the HS-VCT3 helps operators manage key process parameters more consistently and achieve better control over casting quality.

Hasung's Expertise in Jewelry Casting Equipment

The launch of these two jewelry vacuum pressure casting equipment reflects Hasung's product strategy of providing equipment options to meet the diverse processing needs of precious metals.

Hasung has approximately 5,500 square meters of production facilities, and its products cover continuous casting machines, gold bar casting machines, metal powder making machines, and other jewelry making equipment.

From jewelry casting to precious metal smelting, rolling, and metal powder processing, Hasung's product portfolio covers a wide range of precious metal processing stages. Offering equipment tailored to different materials, production scales, and process requirements helps manufacturers configure and select equipment according to their actual production needs.

"Jewelry manufacturers' needs vary depending on workshop size, production volume, materials, and design requirements. Our goal is to provide practical casting solutions that help customers find the right balance between production flexibility, process control, and operational efficiency," noted Mr. Xiang, the founder of Hasung. "With the HS-VPC.S and HS-VCT3, we further expand our equipment selection to meet the needs of a wider range of jewelry manufacturing applications."

About Hasung

Hasung is a national high-tech enterprise based in Shenzhen, specializing in the manufacturing of equipment for precious metals and new materials processing. Its main products include vacuum pressure casting machines, gold bar casting machines, silver bullion casting machines, jewelry casting machines, jewelry rolling mills, metal powder making machines, gold chain making machines, etc., which are sold to more than 80 countries and regions around the world.

Media Contact:
Shenzhen Hasung Precious Metals Equipment Technology Co., Ltd
No.11, Jinyuan 1st Road, Heao Community, Yuanshan Street, Longgang District, Shenzhen, China 518115
Email: sales@hasungmachinery.com
Tel: +86 17898439424
www.hasungmachinery.com