Two-component parts combine the advantages of two different materials in a single part. The two can be two different filaments, a combination of 3D printing and injection moulding, or the combination of different materials such as plastic and metal.
igus® tribo-filaments have unique, outstanding wear resistance and coefficients of friction. But other 3D printing materials have been optimised for strength and rigidity. Two-component printing allows the tribo-filament to be combined with other materials within a component so as to enhance the mechanical properties without sacrificing wear resistance. Depending on requirements, the second material can be freely selected – rigid or flexible to achieve specific properties for such applications as gripper surfaces.
This creates a combination of injection moulding and greater geometrical freedom without losing the mechanical properties of injection-moulded parts.
Do you have an application that requires the use of two-component parts? Our 3D printing team would be happy to support you in implementing your project.
A component for deflecting forces; its great rigidity protects the joint from interfering influences. The bearing points are very smooth-running, durable, and wear-resistant. A good combination here is a structural material reinforced with glass or carbon fibres such as PET-CF and a tribologically optimised material such as one of the igus® iglidur® tribo-filaments.
The dynamic requirements dictate that the gripper element be as light as possible, but with great flexural strength, and grip securely but gently. While the gripper's body is manufactured with a fibre-reinforced filament, a flexible filament whose high coefficient of friction ensures a secure grip can be used for the gripping surfaces.
A shaft's bearings should compensate for any angle errors and dampen shocks. The iglidur® plain bearing element can be encased with a flexible filament such as TPU with a Shore hardness of 95 A.
Many materials are compatible and can be combined in one way or another in two-component printing. Similar filaments (such a materials with the same base polymer or similar processing temperatures) can be firmly bonded: the materials meld with one another, connecting the component's two "phases". This no longer functions when the difference between processing temperatures is too great: then one of the two materials may not remain dimensionally stable during processing or may even be subjected to damaging temperatures. To be absolutely certain of the connection, an interlocking design in which the two phases are combined so that they cannot be separated by non-destructive means is a good option.
Allow complex injection moulded components with 3D printing inserts
With five decades of expertise in wear-resistant components made of self-lubricating high-performance plastics, igus® brings new capabilities to 3D printing. We offer solutions developed especially for moving applications, in which usual materials would quickly reach their limits – our plastics exhibit wear resistance of up to 50 times that of standard 3D printing plastics.
iglidur® polymers and the products they are used to make are tested extensively for wear, friction, and durability in our in-house test laboratory . The abrasion resistance of 3D printed components has been proven and documented in many tests: this video shows a wear test on a sliding element of I180 tribo-filament compared to a 3D printed part of standard ABS 3D printing material.
For two-component printing and more: print2mold, the igus® Rapid Tooling method, allows wear-resistant components from additive manufacturing quickly and easily from iglidur® injection moulding plastics. Just upload the 3D model to the igus® 3D printing service, select the material and quantity you want, and calculate the price. After a quick check and confirmation by our engineers, your parts will be prepared for shipment within less than ten days' time and delivered.