Rear bar foam.
For the rear bumper material, the general use is polymer material, also known as foam buffer layer.
This material can act as a buffer when the vehicle crashes, reducing the impact of the vehicle. In addition, some car manufacturers use metal low-speed buffer layers, such as Subaru and Honda. It should be noted that these buffer layers are usually made of non-metallic materials such as polyethylene foam, resin or engineering plastics, rather than foam. Therefore, we cannot simply call the rear bumper foam.
The low-speed buffer layer plays an important role in vehicle collision. It can reduce the damage to the vehicle and even offset the damage to the vehicle in minor collisions. This is mainly because the low-speed buffer layer is able to absorb and disperse the impact force during a collision, thus protecting the safety of the vehicle and passengers. Therefore, the low-speed buffer layer is usually made of polyethylene foam, resin or engineering plastics to provide a better buffer effect.
It should be noted that the low-speed buffer material used by different car manufacturers may be different. Subaru and Honda, for example, use metal low-speed buffers. These materials are better able to absorb impact forces and provide greater protection. Therefore, the selection of the appropriate low-speed buffer material is very important for the safety performance of the vehicle.
The foam inside the front bar is broken. Is it necessary to repair it?
It is necessary to repair.
This needs to be installed anti-collision foam, if there is a collision can play a buffer role, it is recommended to go to the repair shop to replace.
In addition, if the front bumper is not dealt with, the crack may become larger in daily driving, and ultimately affect the safety of the car. Among all the exterior parts of the car, the most vulnerable part is the front and rear bumpers. If the bumper is seriously deformed or smashed, it can only be replaced. The bumper is only slightly knocked out of shape, or there is not a very serious crack, and there can be a way to repair it without replacing it.
The repair method after the plastic crack of the front bumper of the car can be carried out according to the following steps:
Preparation work:
Make sure the vehicle is in a safe and smooth position for repair work.
Prepare necessary tools and materials, such as sandpaper, sander, plastic cleaning solution, stainless steel repair mesh, putty, painting tools, etc.
Sanding and cleaning:
Use sandpaper and a sander to sand the area around the crack and remove paint from the area around the crack.
Clean the sanded area with a plastic cleaning solution to ensure that the surface is free of impurities and dirt.
Fill the cracks:
Cut stainless steel repair mesh to fit and fill in the cracks in the bumper.
If the crack is large or irregular in shape, it may need to be filled with multiple repair nets
Filling and sanding:
Fill the gap with putty and wait for the putty to dry.
After the putty is dry and solid, use a sanding tool to sand the putty to make a smooth transition to the surrounding surface.
Spray painting treatment:
Before painting, make sure the repaired area is completely dry and free of obvious flaws.
Go to 4S shop or professional paint shop for spray painting treatment to ensure color matching and paint quality.
After painting, let the vehicle park for a period of time to allow the finish to completely dry and cure.
Other repair methods (depending on the severity and location of the crack) :
For slight cracks or depressions, hot water or a hair dryer can be used to heat the local area, and the principle of thermal expansion and contraction of plastic can be repaired.
If the crack is large or cannot be repaired by the above methods, a new bumper may need to be considered.
Note:
Care should be taken during the repair process to avoid secondary damage to the vehicle.
If you do not have the repair skills or tools, it is recommended to go to a professional repair shop for repair.
When painting, the paint should be selected to match the color of the original car paint to ensure the appearance of the repaired effect.
If you want to know more, keep reading the other articles on this site!
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