Vacuum injection and vacuum complex mold

Machining accuracy ±0.15mm

Maximum molding size of the wh 2000*1200*1000mm

Product material PU, imported PU, transparent PU, soft PU, ABS, PP, PC. You can even create transparent, reinforced, color, and rubber prototypes

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产品详情

Vacuum injection molding and vacuum injection molding

Vacuum Casting (Vaccum Casting), also known as vacuum complex mold. The castable is defoamed, stirred, preheated, and injected under vacuum conditions, and the secondary curing molding process is carried out in a 60℃-80℃ incubator for 2-3 hours. It is suitable for small batch trial production in the process of product development, which has complex structure, uniform wall thickness and meets certain functional requirements.

Advantages of vacuum casting

Low mold cost
The mold can be finished in a few days
Many types of polyurethane resins can be used for casting, including encapsulation molding
Cast copies are highly accurate and have an excellent surface texture
The mold is durable and can be reproduced in 20 or more copies
Ideal for engineering models, samples, rapid prototyping, production Bridges

When to use vacuum injection type?

When product developers only need to produce quality plastic parts in small batches of 10 to 20 pieces, they use vacuum injection molding while avoiding the long lead times and processing costs of manufacturing injection molds.These components are used for handboards and display models, crowdfunding and trade show events, testing the fit and functionality of new designs, and serving as a bridge to greater production. In some applications, vacuum casting can also be used for end-use parts because castable resins effectively mimic the properties of ABS, nylon, PP, acrylic, and soft TPE rubber.

Technical parameters:

Applicable mold: silicone mold (life span 10-20 pieces). Casting material: two-component polyurethane PU. Current materials used: AXSON polyurethane resin, Hei-cast polyurethane resin. Physical properties: similar to ABS, PP, nylon, PMMA/PC transparent parts, soft rubber parts (40-90shord D), high temperature resistant parts (150℃), fireproof materials and so on. General working time: 1-4 hours/piece. Standard reproduction accuracy: ±0.20mm/100mm. Thickness of cast sample: minimum 0.5mm, best 1.5mm-5mm. Maximum casting workpiece: 2000mmX1200mmX1000mm.

Vacuum injection process:

The production of vacuum injection is divided into four steps: silicone mold preheating, castable pre-defoaming, pouring and curing.

Step 1. Preheat the silicone mold

The silicone mold is heated to 60-70 ° C in advance, and when the mold temperature is too low, it will cause incomplete curing and poor physical properties. The mold temperature has a direct relation to the dimensional accuracy of the trial-produced parts.

Step 2. Pre-defoaming of castable

The two liquid A and B were respectively subjected to vacuum defoaming treatment for more than 30 minutes in a vacuum tank.

Step 3. Pour

Place containers containing liquid A and liquid B in separate workrooms. After pumping the vacuum in the working room, stir liquid B from time to time to defoam it for 5-10 minutes, pour liquid A into liquid B and stir for 30-40 minutes, and quickly pour it into the silicone rubber mold. And the operation of restoring atmospheric pressure within 1 minute to 1 minute and 30 seconds from the beginning of mixing.

Step 4. Cure

After 30-60 minutes of curing in an incubator at 60-70 ° C, the mold can be removed. If necessary, the secondary curing is carried out for 2-3 hours in an incubator at 70-80 ° C.

Why choose Kaio CNC Machining Services?

Leading CNC equipment and materials

Our imported 5-axis CNC machining centers manufacture turning and milling parts using a variety of plastic and metal alloy materials such as aluminum, brass, nickel and steel, including mild steel and stainless steel. We use industry-leading software such as Autodesk PowerMill and CGTech Vericut, and we have over 14,000 tools.

Hand plate processing rich experience guidance

We are proud to talk about the experience and performance of our team, and one of the best ways to demonstrate the advantages of our CNC machining services is with our customers, 90% of whom are long-term partners. Our specialist technicians serve the entire process - from the initial stages of product design, helping with material selection, to manufacturing the first prototype, to the final production run.

Full range of surface treatment services

Many CNC machined parts require some form of post-machining before they are ready for use. From sandblasting to polishing, anodizing to electroplating, laser etching to spray painting, we offer every finish you need to make a great finished part.

Complete testing equipment

In order to ensure high quality products to customers, the company is equipped with a full set of quality testing equipment: three-dimensional testing, surface measuring instrument, height gauge, paint surface resistance instrument, micrometer, color difference detector, hardness tester, etc., by professional testing personnel.

Customer evaluation

3D printing FAQ

Why choose vacuum casting?

Vacuum casting is a specialized technique for making high-fidelity copies of mother forms using cheap silicone molds and castable resins. Copies made in this way show the same quality as plastic injection molded parts for a fraction of the production time and expense.

Kaio vacuum injection service frequently asked questions

1. What makes Kaio's vacuum injection service different? Our vacuum injection services are known for their superior quality and speed. Our skilled technicians combine more than 27 years of experience with the latest technology to quickly produce superior hand and engineering models. We can also further enhance the quality of your parts with a range of finishing services, including machining, media sandblasting, printing, painting and more. 2. Can Kaio provide design services, industrial design support or product development support as an extension of its vacuum injection services? Yes. To complement our vacuum injection services, we offer extended services for manufacturing design support. While we used to reserve this service only for approved orders, we now offer it to all incoming RFQS. We also offer light assembly services to meet your needs. 3. What is Kaio's vacuum injection service quality standard? To ensure the highest quality standards for all your finished parts, our team adheres to a strict quality control process. The first is the verification and testing of all materials. During production, we carefully control temperature, humidity and other processing conditions to maintain the highest consistency of your parts. 4, how to get a quote of Kaio vacuum injection service? We can get quick quotes easily. Simply upload your CAD file and product details and we will send you a free quote within 24 hours. Or less. 5. What are the limitations of vacuum injection type? The vacuum injection process has some limitations. Developers need to use good design practices to ensure that there are enough drafts so that parts can be released. For the same reason, avoid breaking the bottom cut, deep ribs, convex and other features of relatively soft silicone molds when opened. 6. What keeps the molds together in vacuum injection? When our technicians cut the mold open to remove the main pattern, they make a zigzag pattern on the cutting line, like a key. This helps to reseal the mold in the right direction to pour the resin. The mold just needs to be taped and closed with nails to avoid any leaks during the pouring process.

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