Vacuum casting

What is the vacuum casting?

Vacuum Casting is a rapid prototyping technique used to manufacture complex parts. It combines traditional casting processes with modern vacuum technology. This technique is commonly employed for small-batch production and rapid prototyping, especially when high quality, precision, and surface finish are required.

The process of vacuum casting typically involves the following steps
Firstly, a mold for casting is created based on the design of the desired part. This mold is usually made from materials such as silicone or polyurethane and replicates the shape and details of the final product.
The mold is placed inside a Vacuum Casting machine and properly positioned and sealed. The mold should be hollow to allow for material injection.
The selected material, often a two-part liquid epoxy resin, is injected into the mold using the control system of the Vacuum Casting machine. During the injection process, the vacuum system removes the air from the mold to ensure density and quality of the part.
After the material is injected, the mold is placed in a controlled environment for curing and cooling. This process typically requires a certain amount of time to ensure complete solidification and hardening of the material.
Once the material is fully cured, the mold is opened, and the part is removed. Necessary post-processing steps such as trimming, grinding, painting, etc., are performed to obtain the final product.
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The advantages of vacuum casting technology include
Vacuum Casting can produce highly accurate and detailed parts, meeting the requirements of complex products.
Compared to traditional casting processes, Vacuum Casting offers shorter production cycles, allowing for quick production of samples or small-batch products.
Vacuum Casting is compatible with various materials, including polymers, rubbers, and certain metal alloys.
Vacuum Casting is generally more cost-effective than other manufacturing techniques like injection molding or CNC machining, making it suitable for small-batch production.
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Vacuum casting also has limitations and considerations

However, it's important to note that Vacuum Casting also has limitations and considerations, such as limited material choices and mold lifespan. Therefore, the selection of the appropriate manufacturing method should be based on specific requirements and product characteristics.

Overall, Vacuum Casting technology is a powerful manufacturing process that caters to the needs of high-quality, rapid prototyping, and small-batch production. It finds wide applications in industrial design, automotive, aerospace, and other industries.

Materials commonly used in vacuum casting

The commonly used materials in vacuum casting include polymers such as polyurethane resin, acrylic resin, and silicone rubber. These materials have good flowability and curing characteristics during the vacuum casting process, making them suitable for manufacturing complex parts and models.

Here are some common materials used in vacuum casting
In addition to these materials, other polymer resins, rubber materials, or special alloys can be selected based on specific requirements to meet the needs of different products. Vacuum casting technology offers flexibility in material selection to accommodate various applications.
Polyurethane resin is a commonly used material in vacuum casting. It has high strength and wear resistance. It is suitable for manufacturing various parts and products, including models, casings, and decorative items.
Acrylic resin is a transparent material with good weather resistance. It is often used to manufacture transparent parts, lampshades, transparent models, and more.
Silicone rubber is a soft, high-temperature resistant, and wear-resistant material. It is commonly used to manufacture flexible parts, seals, and molds. It has excellent elasticity and resilience.
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High efficiency online Vacuum casting manufactuter - KAIAO
These precision requirements may vary depending on specific applications and product needs. Vacuum casting process is capable of achieving high precision and can be optimized through process parameters and manufacturing control to meet different precision requirements.

Precision type

Precision requirement

Typical range

Dimensional accuracy

±0.1mm or smaller

Typically within ±0.05mm

Surface finish

Ra 1.6μm or smaller

Typically within Ra 0.8μm


High consistency

Typically within ±0.05mm

Our advantage

We are a professional custom manufacturing factory, and we hold a leading position in the vacuum casting industry. As an expert in this field, our company offers several key advantages:

We have extensive experience and expertise in the field, placing us at the forefront of the industry. Our team consists of experienced professionals who can provide high-quality solutions.
We are committed to continuous innovation and improvement to meet customer needs. We stay updated on industry trends and emerging technologies, applying them to our processes to deliver more efficient and precise solutions.
We prioritize accuracy and quality control to ensure that each product meets customer requirements. We utilize advanced equipment and rigorous testing methods to ensure dimensional accuracy, surface quality, and repeatability of our products.
We are capable of completing projects within a short timeframe and delivering on time. Our efficient process flow and flexible production capacity enable us to meet urgent customer timelines.
We understand that each customer's needs are unique, so we provide customized solutions. We work closely with customers to ensure that our processes meet their specific requirements and deliver optimal results.
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Vacuum casting FAQ

If you have any questions about vacuum casting, please read our FAQ, which contains professional questions and answers about technology, industry, production, etc. You can find the answers you want here.
How should I effectively evaluate a supplier's experience and expertise in Vacuum Casting?
To assess a supplier's experience and expertise in Vacuum Casting, it is essential to examine their work history within the field. Look for suppliers who have a proven track record of successfully delivering Vacuum Casting solutions. Additionally, inquire about their technical capabilities, such as their knowledge of different casting materials, mold design expertise, and familiarity with industry-specific quality standards.
What factors should I consider when evaluating a supplier's quality control system?
When evaluating a supplier's quality control system for Vacuum Casting, several factors should be considered. First, examine their quality management processes, including how they monitor and control the casting process to ensure consistent quality output. Second, inquire about the testing equipment they employ to verify the dimensional accuracy, surface finish, and mechanical properties of the cast parts. Finally, check if the supplier holds relevant certifications, such as ISO 9001, which demonstrate their commitment to maintaining high-quality standards.
How can I ensure a supplier's delivery capability and effective time management?
Ensuring a supplier's delivery capability and reliable time management is crucial in Vacuum Casting procurement. Evaluate the supplier's production capacity and their ability to meet your projected demand. Inquire about their production planning and scheduling processes to ensure they can meet agreed-upon delivery timelines consistently. Additionally, assess their responsiveness and flexibility in handling urgent orders or unexpected changes in demand.
What considerations should be made for cost-effectiveness in Vacuum Casting procurement?
Achieving cost-effectiveness in Vacuum Casting procurement involves a careful balance between price, quality, and value. While it is important to seek competitive pricing, it should not come at the expense of compromising quality or timely delivery. Evaluate the supplier's pricing structure in relation to their capabilities, expertise, and the overall value they bring to the table. Consider long-term partnerships that offer a mutually beneficial relationship rather than solely focusing on short-term cost savings.
How can I assess a supplier's material selection and supply capabilities?
Assessing a supplier's material selection and supply capabilities is crucial for Vacuum Casting procurement. Inquire about the range of casting materials they offer and their suitability for your specific requirements. Evaluate the supplier's relationships with material suppliers to ensure a stable and consistent supply of high-quality materials. Additionally, consider their expertise in handling different materials and their ability to provide material certifications or test reports to guarantee material properties.
What measures can be taken to ensure confidentiality and protection of intellectual property?
Protecting intellectual property is paramount when engaging with suppliers in Vacuum Casting procurement. Prioritize suppliers who demonstrate a strong commitment to confidentiality and have established measures in place to safeguard sensitive information. This may include signing non-disclosure agreements (NDAs) that clearly outline the responsibilities and obligations of both parties regarding the protection of intellectual property. Conduct due diligence to ensure the supplier has a reputable track record of maintaining confidentiality.
What factors should I consider regarding a supplier's communication and collaboration abilities?
Effective communication and collaboration are essential for successful Vacuum Casting procurement. Evaluate a supplier's ability to understand your requirements and specifications accurately. Assess their responsiveness and willingness to provide regular updates on project progress. Look for suppliers who actively engage in collaborative problem-solving, offer technical expertise, and provide clear channels of communication to address any concerns or queries that may arise during the procurement process.
What considerations should I make for after-sales service and technical support?
After-sales service and technical support are critical aspects of Vacuum Casting procurement. Inquire about the supplier's warranty policies and the duration of coverage provided for the cast parts. Assess their responsiveness and availability for technical consultations or troubleshooting assistance. A supplier with a robust after-sales service and technical support system can provide valuable assistance in resolving any issues that may arise post-delivery, ensuring a smooth and satisfactory experience.
How can I evaluate a supplier's commitment to sustainability and environmental responsibility?
Evaluating a supplier's commitment to sustainability and environmental responsibility is increasingly important in Vacuum Casting procurement. Inquire about their environmental management policies and practices, such as waste management and recycling initiatives. Assess their efforts to minimize energy consumption and carbon emissions throughout their operations. Look for suppliers who hold relevant certifications or adhere to recognized environmental standards, indicating their dedication to sustainable practices.
What factors should I consider for ensuring supply chain stability in Vacuum Casting procurement?
Supply chain stability is crucial in Vacuum Casting procurement to avoid disruptions and ensure timely product delivery. Assess a supplier's relationships with key material suppliers and partners to gauge their ability to maintain a stable supply chain. Inquire about their contingency plans for potential disruptions, such as alternative sourcing options or inventory management strategies. Additionally, evaluate their track record in managing supply chain risks and their ability to adapt to changing market conditions.
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