One；Effect of burr on parts function and complete machine performance
1, the impact on the wear of the parts, the greater the burr on the surface of the parts, the greater the energy used to overcome the resistance. The existence of burr parts may produce the coordination deviation, the rougher the coordination part, the greater the pressure per unit area, and the surface is more likely to wear.
2. Under the influence of corrosion resistance, the burr parts are easy to fall off after surface treatment, which will damage the surface of other accessories. At the same time, a new surface without surface protection will form on the burr surface. Under wet conditions, these surfaces are more prone to rust and mildew, thus affecting the corrosion resistance of the whole machine.
Two: the impact of the burr on the subsequent process and other processes
1. If the burr on the reference surface is too large, the fine processing will lead to uneven processing allowance. The spare amount of the burr machine is not uniform due to the large burr in the cutting part of the burr will suddenly increase or decrease the stability of the cutting, produce knife lines or processing stability.
2. If there are burrs in the fine datum, the reference face is easy to overlap, resulting in the inaccurate size of processing.
3. In the surface treatment process, such as the plastic spraying process, the coating metal will first gather at the tip of the burr site (electrostatic is easier to adsorb), leading to the lack of plastic powder in other parts, resulting in unstable quality.
4. Burr is easy to cause bonding in the process of heat treatment, which often destroys the insulation between layers, resulting in a significant decrease in the AC magnetism of the alloy. Therefore, some special materials such as soft magnetic nickel alloy must be burr before heat treatment.
Three: the importance of deburr
1. Reduce and avoid the presence of burr affecting the positioning and acceleration of mechanical parts, and reduce the machining accuracy.
2. Reduce the rejection rate of the workpiece and reduce the risk of the operators.
3. Eliminate the wear and failure caused by the uncertainty of the burrs in the mechanical parts during the use process.
4. The mechanical accessories without burr will increase the adhesion when painting the paint, making the coating texture uniform, consistent appearance, smooth and neat, and the coating firm and durable.
5. Mechanical parts with burrs are easy to produce cracks after heat treatment, which reduces the fatigue strength of the parts. For the parts bearing the load or the parts running at high speed to burrs can not exist.
Post time: May-16-2023