One of the most common manufacturer rubber needs is rubber to metal bonding. When metal is bonded to the rubber, it becomes extremely strong and durable. This becomes incredibly important in NVH (Noise, Vibration & Harshness) applications.
The process also creates reliable, custom isolators for machines and equipment. Manufacturers can choose the elastomer and the metal that they would like to be bonded. Each material has its standout features and best case uses. These choices enable manufacturers to hand-pick materials for bonding based on the temperature resistance, durability and other characteristics needed for the intended application.
Continue reading to learn more about rubber metal bonding and the various applications, material options and methods.
Metal Bonded Rubber Applications
Metal bonding can be performed on virtually any rubber part. This is what makes it so versatile and popular. There are many applications for the use of metal bonded rubber. Here are a few:
· Automotive: Gaskets, seals, bushings, engine mounts, hangers, bumpers
· Agriculture: Seals, isolation mounts, pumps, stabilizers, ball joints, cab isolation
· Medical: O-rings, tubing, extrusions, pump compressor isolation
· Mass Transit: Valve seals, pedal, suspension, engine parts
· Construction: Conveyor belt, vibration reduction, isolation mounts, stabilizers
Metal bonding ensures the highest level of security. Bonded metal to rubber parts can last a long time, keeping users and equipment safe. Optimal outcomes are achievable as long as the right materials are used.
Materials for Rubber Metal Bonding
There are many different materials that can be used in the rubber metal bonding process. Take a look at the different kinds of rubber and metal materials that can be used in bonding.
Rubber
There are numerous options for rubber material, or polymers, that can be bonded with metal. Manufacturers choose the polymer based on the characteristics that they are looking for. For example, if a manufacturer needs an especially flexible polymer, they may choose silicone. These are the six most common rubbers used for metal rubber bonding:
· Natural rubber (NR)
· Fluro-Elastomer (FKM)
· Ethylene-Propylene (EPDM)
· Nitrile (NBR)
· Neoprene (CR)
· Silicone (VMQ)
Metal
There are many metal options for rubber bonding. OEMs will choose a metal type depending on the application of the rubber part they need. If a manufacturer is looking for an inexpensive, durable material then they may choose aluminum. Here are five metal surface options that are commonly used in molded rubber parts:
· Steel
· Aluminum
· Brass
· Beryllium
· Copper
Steps of Rubber Metal Bonding
The rubber metal bonding process is carried out in six basic steps. In some methods, these steps vary a little. Here’s the basic process for rubber metal bonding:
1. Choosing an elastomer
2. Prepare the metal
3. Prime the part (if necessary)
4. Apply adhesive the metal part
5. Molding and bonding
6. Testing to ensure quality bond and load / deflection testing.
Elements like the kind of glue used and the adhesive system for application make a huge difference in terms of quality and durability.