Reduce Aluminum Scratches Effectively, Do You Want To Learn?

Abstract: As the competition in the aluminum profile market becomes increasingly fierce, the problem of aluminum scratches becomes more and more serious. Everyone is working hard to improve their product quality and services. The aluminum extrusion process is a very critical process in the production of aluminum profiles. Therefore, this article mainly describes the main reasons for scratches on aluminum profiles during the extrusion process and the solutions.

Keywords: aluminum profile; aluminum extrusion; aluminum scratches

Scratches are the most common type of quality defects in the extrusion process. How to effectively control and reduce the occurrence of such quality defects plays a very important role in improving the overall yield of the extrusion process.

 Main causes of scratches during aluminum extrusion

Tool wear:

Wear of aluminum extrusion dies, cutting tools, or other processing tools may cause uneven surfaces of aluminum profiles, resulting in scratches.

Improper operation:

If the operator does not operate properly when handling, processing, or installing aluminum profiles, aluminum gouges may be caused.

Improper surface treatment:

If the aluminum profile is not properly treated during surface treatment, such as anodizing, spraying, or polishing, aluminum gouges may be left.

Environmental factors:

Dust, debris, or other contaminants in the working environment may leave scratches on the surface of aluminum profiles.

Uneven cooling:

If the aluminum profile is not evenly cooled during the cooling process, it may cause uneven stress within the material, leading to the formation of surface defects.

Transportation and storage conditions:

During transportation and storage, improper conditions, such as stacking incorrectly or coming into contact with hard objects, may cause aluminum scratches.

Mold design:

Improper mold design, such as an inappropriate mold gap or rough mold surface, may also cause scratches on the surface of aluminum profiles.

Surface condition of raw materials:

If there is oil, rust, or other contaminants on the surface of the raw materials, such as dirt or hard metal material particles will adhere to the surface of the working belt or damage the working belt.
Transfer to the surface of the profile during the extrusion process, forming scratches.

aluminum scratches

12 effective ways to reduce scratches on aluminum profiles

1. Use high-quality raw materials:

Choose high-quality aluminum with a clean surface and no impurities to reduce potential scratches caused by raw materials.

The aluminum billet used for extrusion must strictly control the product quality and must not contain slag or talcum powder.

2. Optimize the extrusion process:

Adjust the extrusion speed, temperature, and pressure to ensure that the aluminum flows evenly during the extrusion process.

3. Maintain the mold regularly:

During the maintenance and polishing of the mold, you must pay attention to careful operation and must not use too much force.

After repairing the mold, one must remove and blow away all dust from the mold surface.

Regularly check and maintain the extrusion mold to ensure that the mold surface is smooth and undamaged.

4. Use appropriate lubricants:

Choose appropriate lubricants to reduce friction and prevent scratches on aluminum profiles when the aluminum extrusion press is working.

5. Cleaning after sawing:

Clean the aluminum chips on the saw table in time after each sawing, and blow the aluminum chips before and after loading the aluminum profile. Ensure that the surface of the aluminum profile is clean and reduces the risk of scratches.

6. Aging furnace operation:

Ensure aluminum surface cleanliness before aging to avoid chip adhesion and scratches at high temps.

Handle with care when entering and exiting the aging furnace to prevent the aluminum profile frame from shaking and causing scratches.

7. Improve mold design:

Design a reasonable mold gap to avoid scratches caused by improper mold design.

8. Use automated equipment:

Use automated equipment to reduce manual operation errors and improve production efficiency and product quality.

Be sure to carefully check and measure the billet temperature, mold temperature, and container temperature before using the machine. Only when the extruder ensures that all three temperatures are up to standard can production be arranged.

9. Use protective film or coating:

Apply a protective film or coating on the surface of the aluminum profile to prevent scratches during processing and transportation.

10. Improve handling tools and methods:

Use handling tools made of soft materials to avoid direct contact between hard objects and aluminum profiles.

When loading the frame and hoisting the aluminum profile, handle it with care and keep an appropriate distance between the aluminum profiles.

11. Optimize the cooling system:

After extrusion, evenly cool the aluminum profile to prevent internal stress from uneven cooling.

12. Clean the production environment regularly:

Keep the production environment clean to reduce the impact of dust and debris on aluminum profiles.

aluminum profile

Why is it so important to reduce aluminum profile scratches?

Because it directly affects the aesthetics, corrosion resistance, structural integrity, and market value of the product. In addition, it helps to improve customer satisfaction, reduce maintenance costs, ensure safety standards, and enhance the market competitiveness of enterprises.

How do you deal with the aluminum scratches problem you find?

  • Evaluate the severity of the scratch: First, determine the depth and length of the aluminum scratch to determine whether it affects the structural integrity and performance of the aluminum profile.
  • Clean the damaged area: Before treatment, thoroughly clean the damaged area to remove all dust, oil, or other contaminants to ensure that the repair material can adhere well.
  • Choose the appropriate repair method: Depending on the type and severity of the scratch, choose an appropriate repair method, such as sanding, filling, painting, or anodizing. You can also use an aluminum scratch remover.
  • Sanding: For minor surface scratches, sanding with sandpaper of appropriate coarseness and fineness can be used to remove the scratch and smooth the surface.
  • Filling material: For deeper scratches, fillers such as epoxy resin may be required to fill the scratch and restore surface flatness.
  • Painting or coating: After the repair, it may be necessary to re-spray or coat to match the original color and appearance and protect the repaired area from further damage.
  • Quality inspection: After the repair is completed, perform a quality inspection to ensure that the repaired area is consistent with the surrounding materials and meets performance requirements.
  • Customer communication: If the product has been delivered to the customer, timely communication should be made with the customer to provide repair or replacement solutions.

Here are some common questions and answers about aluminum profile scratches(FAQ):







Here’s our advice, I hope it helps.
If you have any questions or need further assistance, please feel free to ask us.

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