About Different Sandblasting Effects
The particle size of the abrasive will directly affect the sandblasting effect.
Mesh is a common parameter used to represent abrasive particle size. People usually use mesh to decide the size for the sand blasting. When other conditions remain unchanged, the larger the abrasive mesh number, the finer the abrasive particle size, and the smoother the surface effect. Abrasives with higher Mesh can grind and polish the surface of objects more carefully, reducing surface roughness and unevenness. Abrasives with lower Mesh will produce greater roughness and clear texture, and are only suitable for some products that require strong texture effects.
| Mesh |
μm |
mm |
| 80 |
178 |
0.178 |
| 100 |
150 |
0.15 |
| 120 |
124 |
0.074 |
| 140 |
104 |
0.061 |
| 170 |
89 |
0.053 |
During our 25 years in the cnc machining, 80#,100#,120# is the frequently used.
At JANEE, most customers choose #120Mesh abrasives. The abrasive grain size of 120Mesh is finer, which can provide a more delicate and smooth surface effect. It can remove insignificant defects, such as small oxidized areas or tiny scratches, while maintaining a high level of accuracy. According to the specific needs of customers, we can flexibly control the abrasive particle size (maximum no more than #170Mesh) so that the final surface smoothness reaches our desired goal.
Benefits of Sandblasting
With the effectiveness of sandblasting in mind, it is crucial to introduce the numerous advantages it brings to the machining process:
(1)Sandblasting cleans the surface. One of the reasons why sandblasting is an important part of the finishing process isn’t just because it smooths the surface of the object. It cleans the surface, too.
(2)Sandblasting services are a great way to remove rust, oil, and harmful contaminants from almost any kind of surface. Sandblasting is surprisingly fast. Sandblasting cleans and smooths objects for finishing quickly and efficiently. This makes cleaning tough surfaces like metal easier, which saves on time and money.
(3)Sandblasting services remove old paint. When an object has old paint covering it, sandblasting can quickly remove the paint at a high speed. This prepares the object for a new coating of paint with a fresh and smooth result.
Adverse Effects of Sandblasting on Machined Parts
Based on workshop experience, sandblasting can have some adverse effects on machined parts. To minimize unnecessary damage caused by these effects, we kindly advise mechanical designers to consider the following factors during the design process.
- Part Deformation: During the sandblasting process, the impact and frictional forces of abrasive particles can exert significant pressure on the parts, leading to deformation. This is especially critical for thin or easily deformable materials such as thin-walled metals or plastics, where shape distortion should be carefully avoided.
- Loss of Accuracy: The high-velocity impact of abrasive particles during sandblasting can result in surface impact and wear, potentially leading to dimensional and geometric alterations. This is particularly relevant for precision components or processes requiring high accuracy, where sandblasting may cause a loss of precision and necessitate additional compensation and adjustments.
- Material Fatigue: The impact of abrasive particles during sandblasting may create stress concentration on the material surfaces, increasing the risk of material fatigue. This is a significant concern for components with high fatigue life requirements, such as aircraft parts or automotive engine components.
- Excessive Surface Roughness: If excessively coarse abrasive particles are chosen for sandblasting, it may result in surface roughness exceeding the specified range, rendering it unsuitable for subsequent coating, bonding, or other treatments.
It is essential to carefully consider these factors and strike a balance between the desired surface finish and the potential adverse effects of sandblasting to ensure optimal outcomes in the machining of parts.
Sandblasting is suitable finishs for different CNC parts, especially aluminum, brass, and stainless steel. JANEE offers high quality sandblasting finishing options, ideal for both CNC metal and plastic parts. In addition to CNC machining and sandblasting, our team of engineers can also provide spring fabrication, stamping, metal folding ects, services. For more information on our CNC machining and sandblasting services, please contact: [email protected].
Rescources
Aerospace Industry
In the aerospace field, sandblasting is commonly used in the manufacturing of aircraft components and spacecraft assemblies. It enhances the surface roughness of the parts to meet coating adhesion requirements and removes wear and damage from the components.
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Mechanical Manufacturing
In general mechanical manufacturing, sandblasting finds extensive application in surface treatment of various parts such as bearings, gears, and machine bodies. It removes burrs, wear, and damage, improving surface quality and precision
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Medical Industry
In the manufacturing of medical equipment, sandblasting is used for treating various metal and plastic parts, such as surgical instruments, artificial joints, implants, etc. It increases the surface roughness of the parts, improves lubrication performance, and enhances biocompatibility.
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Automotive Industry
Sandblasting is widely used in the manufacturing of automotive components such as engine parts, brake system components, and chassis parts. It improves the surface quality of the parts, increases adhesion and lubrication performance, while removing burrs and scratches.
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