RECENT BLOG

There are many kinds of casting, which are used in different industries and different places. But when it comes to the defects in the castings, then it is the unwanted irregularities which all appear in a way during the metal casting process. If you look at these defects, then you can find many types of defects.

Types of Casting Defects

1. Shrinkage

The defects that arise when the shrinkage of the casting cavity takes place.

2. Gas Porosity

So, when this type of defect occurs, then you can find many blowholes, pinholes, and even some open holes in it.

3. Pouring Defects

When any hot metal is poured to take the shape of anything, then it needs to be cooling down in a gradual manner. But many times, due to the inclusion of slag or even faster colding of metal or misrun lead to this defect.

4. Mold Defects

In this defect, due to swelling, metal penetration, rat tail, or even washing lead to a defect in the molding material.

5. Metallurgical Defects

In this type, you need to handle the hot liquid metals. These metals are required to be pure and at the right temperature for going for the metallurgical process. But if hot spots or hot tears occur, then it is a significant defect that you can face.

Causes and Remedies for the Defects

1. Blowholes Causes

- Due to excess moisture.

- Fine sand grains.

- Lack of venting.

Remedies

- Control the moisture content.

- Go for right sand grain size.

- Provide good venting.

Sand HolesCauses

- Due to the loose packing of sand.

- Dirty mold cavity.

- Fast pouring of molten metal.

Remedies

- Go for proper packing.

- Clean the mold carefully.

- Pour the molten metal slowly.

2. Dirt Causes

- Improper handling and cursing the mold.

- Due to slag particles.

Remedies

- Properly handle the mold. Don’t crush.

- Go for the removal of slag particles.

If you are sand casting manufacturers, then you must take care of these defects in a significant way. It is because due to these defects only, the sand casting gets weak, and it leads to issue in the cast.

Conclusion

Whenever you are going for any casting, always see about the quality and how they are done. Among all casting manufactures, sand casting manufactures are excellent , and it comes with fewer defects and can easily be sorted out with remedies.