At Delmer Group we specialise in high-end vacuum casting induction furnaces designed for jewellery, precious metals and high-purity casting applications. Whether you are working with gold, silver, brass, or platinum, our vacuum casting equipment delivers superior results through advanced melting, vacuum, and over-pressure technology.

Why Choose Vacuum Casting?

Vacuum casting is an essential technology for manufacturers seeking defect-free, high-integrity castings. By combining induction melting with vacuum and controlled gas pressure, our systems reduce porosity, ensure clean metal flow, and guarantee consistent quality.

Key advantages include : 

• High quality castings : By melting and casting under vacuum or controlled atmosphere, you eliminate oxidation, blowholes, and impurities.
• Versatility across metals : Suitable for gold, silver, brass, platinum, and other precious/industrial alloys.
• Repeatability & control : With programmable channels (100+), LCD interface, and automatic cycle routines, you can standardise production for reliability.
• Reduced rework & scrap : Cleaner castings mean fewer rejects, less polishing and preparation time, and an overall lower cost of ownership.

Our Vacuum Casting Equipment Features

Our range includes vacuum casting induction furnaces and vacuum chambers capable of handling flasks, crucibles, and cylinder dimensions to suit diverse production needs.

Typical features : 

• Electric induction heating — silent frequency, rapid melt times, and stable control.
• Vacuum pump integrated chambers, optionally with argon or inert-gas protection to maintain a clean casting environment.
• GUI LCD displays with storage for up to 100 timing/temperature channels for precise repeat cycles.
• Flask systems with or without flange, pneumatically lifted, and optional granulation attachments.
• Designed and manufactured at our facility in Italy, combining global technology partnerships with local production expertise.

Applications – Where Vacuum Casting Makes the Difference

• Jewellery & precious-metal production : From gold jewellery, silver items to platinum components, vacuum casting ensures flawless cast surfaces, high detail fidelity, and minimal downstream finishing. 
• Industrial & high-purity alloys : For components requiring high structural integrity (e.g., aerospace, medical, electronics), vacuum casting offers the control and environment needed for premium results.
• Prototyping and small-batch production : Ideal for manufacturers creating intricate designs or collectors’ items where precision and surface quality are critical.
• Art, sculpture & speciality metalwork : Vacuum casting enables creative freedom — complex shapes, thin sections, fine detail — without sacrificing metallurgical quality.

Frequently Asked Questions (FAQs)

Q1 : What is vacuum casting and how does it differ from conventional casting?

A : Vacuum casting uses a sealed chamber where air is evacuated (vacuum) before or during the melt and cast cycle. This reduces oxidation, gas entrapment, and porosity compared to conventional open-air casting methods, resulting in higher metallurgical integrity and surface finish.

Q2 : Which metals can be processed with a vacuum casting induction furnace?

A : Our machines are designed for noble and semi-noble metals including gold (18 k, 24 k), silver (Ag925), brass and platinum, and can also handle special-alloys. The key is controlling temperature, atmosphere and mold/flask design for each metal.

Q3 : What production volumes are suitable for vacuum casting machines?

A : Our range accommodates small to medium batch production — for example, models can handle crucible capacities of 1–5 kg gold or larger flasks/cylinders for greater capacity. Choose the model that matches your output, flask size, and metal type.

Q4 : How do I pick the right machine model?

A : Consider your metal type, weight of each pour, flask/cylinder dimensions (diameter×height), required temperature range, and whether you need manual or fully automatic operation. Our sales team can help match your output goals and budget with the right specification.

Q5 : What maintenance is required for vacuum casting equipment?

A : Routine maintenance includes checking vacuum pump performance (vacuum time), inspecting seals and tubes, cleaning induction coils and crucibles, verifying gas-protection supply (argon), and following the manufacturer’s recommended schedule for calibration and part replacement.

Q6 : Is vacuum casting more expensive than traditional casting?

A : Initially, yes, vacuum casting machines have higher capital cost than basic open-air furnaces. However, the ROI is achieved through fewer defects, less polishing/rework, better yield, and metal savings — making it cost-effective for quality-driven manufacturing.

Q7 : What is the typical cycle time for a vacuum casting operation?

A : Cycle time depends on metal type, mass, flask size, and design. While vacuum systems may add a few minutes for evacuation, induction heating is faster and overall cast times can be comparable or better than conventional methods — with superior quality as a trade-off.

Explore our Vacuum Casting Induction Furnaces collection and connect with us for a consultation. Whether you’re upgrading to vacuum casting, designing new jewellery lines or expanding into platinum, the Delmer Group team will guide you to the right solution.