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The external fillet radius should range from R3 to 13mm, and the internal fillet radius should range from R1.5 to 6.5mm.

So, what are the unique characteristics of aluminum injection molds? When are they most suitable? In the following content, we will explore and answer these questions.

PE is available as HDPE (High Density Polyethylene) and LDPE (Low Density Polyethylene) among others. HDPE, with a higher density, is more applicable at higher temperatures and is more chemically resistant. LDPE is a softer material and therefore has a higher resilience.

When frequent modifications to the mold design are required, aluminum molds are less adaptable than steel molds, making the modification process more challenging.

Aluminum injection molds refer to injection molds made from aluminum alloy, which are considered the best alternative to steel molds.

Material: Aluminum molds are made from lightweight aluminum alloy, offering good thermal conductivity, corrosion resistance, and ease of processing.

The number or height of the ribs should be determined based on specific conditions, and the rib thickness should be less than the mold wall thickness, generally around 5mm.‌‌‌

The production of automotive parts also extensively uses aluminum injection molds, including automotive components and communication parts.

Aluminum injection molds play a vital role in the production of electronic products, such as laptop cases, smartphone housings and frames, and tablet cases.

Aluminum injection molds, with their lightweight, excellent thermal conductivity, and ease of processing, have become the ideal choice for rapid prototyping, small-batch production, and specific industry applications.

As one of China’s leading injection mold manufacturers, FOWMOULD is committed to providing customized aluminum injection mold solutions, offering a one-stop service from mold design to manufacturing to meet the needs of various industries.

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This aluminum alloy has good machinability and high corrosion resistance, making it ideal for producing small and medium-sized injection molds.

Guide pins and bushings should be placed between the upper and lower steel frames for precise alignment, and bolts should be used to achieve the desired tightening or opening effect of the mold.

Compared to traditional mold steel, the processing cycle of aluminum injection molds is shorter because aluminum alloy has excellent machinability.

In summary，aluminum molds are best for low-cost, short-lifespan, high-precision needs, while steel molds are better for long-lifespan, high-volume production requiring high precision.

Because polyethylene softens the moment it is heated, you can easily process it and use the material for a wide variety of applications. By melting the polyethylene granules (granulate), we can convert them into various end applications, such as lids, packaging and seals.

While aluminum molds may not match steel molds in terms of durability and lifespan, they offer significant advantages in cost-effectiveness, production efficiency, and design flexibility.

As an essential aluminum tool in injection molding, aluminum injection molds have a wide range of applications across various industries:

Aluminum molds also have a significant presence in the packaging industry, particularly in the manufacturing of lightweight, durable, and efficient packaging containers, such as thin walled plastic containers and food packaging.

The design of aluminum injection molds is a critical step in the injection molding process, influencing the performance, lifespan, and quality of the molded products.

Cutting speeds are 40% higher than those of mold steel, resulting in smooth and glossy mold surfaces that allow for easier demolding.

Despite the multiple advantages that aluminum injection molds offer, their limitations in the injection molding process cannot be overlooked:

The rear cylindrical diameter should be approximately φ30mm, connected to the mold cylinder through a specially designed steel frame.

To extend the lifespan of aluminum molds, manufacturers sometimes apply nickel plating or other surface treatments to enhance their wear resistance and corrosion resistance, though this also increases costs.

After extended use, aluminum injection molds are prone to surface defects such as flashing, porosity, shrinkage, and warpage, which can affect product quality.

This balance ensures effective heat conduction and dissipation, avoids energy waste, and improves production efficiency.

Aluminum alloy materials are typically less expensive than imported mold steel, and the unit volume weight of aluminum alloy molds is only one-third that of mold steel.

Injection molds are essential tools in the injection molding process, and traditionally, they are made from carbon steel. However, in certain production scenarios, where reducing weight and enhancing thermal conductivity are important, aluminum alloys are also considered as mold materials.

The thermal conductivity of aluminum alloy is 4-5 times that of steel, enabling more efficient heating or cooling, reducing energy consumption, and significantly shortening demolding time, which effectively enhances mold production efficiency.

Aluminum injection molds are used to manufacture components for machinery and ships, which need to be highly durable and stable to withstand complex working environments.

Generally , aluminum molds can withstand between 50,000 to 100,000 injection cycles, depending on the specific application.

As a result, aluminum molds are becoming increasingly favored in the injection molding industry, especially in situations where rapid prototyping and small-batch production are required, where their advantages are particularly pronounced.

Thanks to its unique properties, polyethylene can call itself the most widely used plastic in the world. PE can be found in various industries due to its favorable properties and low price. It is a soft plastic, which remains flexible and usable up to -50 degrees Celsius. In addition, PE has a high chemical resistance and negligible moisture absorption. Polyethylene is naturally transparent, but any desired color can be made by using pigments.

Fleur Plastics is located in Boxtel (near Eindhoven, The Netherlands) and has been a producer of technical plastic products for more than 15 years. The core business of Fleur Plastics is plastic injection moulding and we want to continue to develop on this as much as possible. As an involved partner, we gladly discuss your entire project, starting from the product drawings and construction of moulds, to optimize the final production. We use top notch injection moulding processing techniques to produce these products in all types of thermoplastic plastics. As a family business in the plastic injection moulding industry, we are able to provide our customers with expertise, quality, service and flexibility.

Compared to steel molds, the lifespan of aluminum molds is typically shorter, making them more suitable for small-batch production or prototyping.

This is a high-strength, high-hardness aluminum alloy with excellent mechanical properties and machinability, making it suitable for producing large injection molds.

In addition to 3D product drawings, injection moulds and plastic injection moulding, the various plastic materials are also important for the quality of your products. For each new injection moulded product, we consider which material is best to use. After all, the type of material must match the application of the injection moulded product. The wide range of types of plastics each have unique mechanical properties, but in general, plastics offer greater design freedom, weight savings and are widely applicable. Due to the different prices of the plastic materials, choosing the right material can immediately save costs for you. One of our sustainable and high-quality raw materials is polyethylene (PE).

Cost: Aluminum molds are cheaper to produce due to simpler processing, while steel molds are more expensive due to the need for higher precision and tougher materials.

When manufacturing aluminum molds, it is crucial to select the appropriate type of aluminum alloy based on the specific requirements of the mold.

Our modern moulding facility is optimized to work day and night. Our machines produce polyethylene injection moulded products, ranging from 1 to 420 grams. In addition, we share our expertise through project management in the Netherlands. If you have any questions about your project or PE injection moulding, gladly get in touch with us.

The thin-walled parts formed from this alloy have high hardness and strength, and it is widely used in the aerospace industry.

Aluminum molds are approximately 50% lighter than steel molds, which reduces costs associated with manufacturing, assembly, and installation, as it eliminates the need for expensive lifting equipment.

They are ideal for small parts and boiler components. Steel molds, made from strong and hard steel, are suitable for large parts and plastic components due to their high strength and wear resistance.

Due to the inherent fragility of aluminum compared to steel, aluminum molds have a shorter lifespan, necessitating more frequent replacements and maintenance.

In plastic injection moulding, plastic is melted and injected into an injection mould under high pressure. The mould is shaped after the desired product. During the cooling process, an additional amount of material is pressed into the mould to account for the shrinkage of the material. When the product has cooled sufficiently, the mould opens and the product is ejected.

If you already have 3D drawings, please upload them now, and FOWMOULD will provide you with a free quote in the shortest possible time!

These products not only require a stylish appearance but also need excellent heat dissipation to ensure stability during high-performance operation.

The use of aluminum alloy can enhance the hardness and strength of the mold, while also offering significant advantages in reducing weight and improving thermal conductivity.