What Are the Precautions for Processing Machine Parts?

In order to ensure that precision parts are not corroded by sweat, air, and other components, keep them in the factory state and increase their service life, we should pay attention to the following matters in the processing of machine parts.

1. The unmarked shape tolerance should meet the requirements of GB1184-80;

2. The allowable deviation of the unmarked length dimension is ±0.5mm;

3. Unfilled corner radius R5;

4. All unfilled chamfers are C2;

5. The sharp angle is obtuse;

6. The sharp edge is dull, and the burr and flash are removed.

1. There should be no scratches, abrasions, and other defects that damage the surface of the parts on the processing surface of the parts;

2. The surface of the processed thread is not allowed to have defects such as black skin, bumps, random buckles, and burrs. All steel parts that need to be painted must be painted with rust, oxide scale, grease, dust, soil, and salt;

3. Before removing rust, use organic solvents, lye, emulsifier, steam, etc. to remove grease and dirt on the surface of steel parts;

4. The surfaces of the riveting parts in contact with each other must be painted with anti-rust paint with a thickness of 30-40μm before connecting. The lap edges should be sealed with paint, putty, or adhesive. The primer damaged by processing or welding must be repainted;

5. The time interval between the surface to be coated by shot blasting or manual derusting and the primer coating should not be more than 6h.

1. The finished parts should not be placed directly on the ground when placed, and necessary support and protection measures should be taken;

2. The machined surface is not allowed to have defects such as rust, bumps, and scratches that affect performance, life, or appearance;

3. The surface processed by rolling shall not peel off after rolling;

4. There should be no oxide scale on the surface of the parts after heat treatment in the final process. Finished mating surfaces and tooth surfaces should not be annealed.

1. After quenching and tempering treatment, HRC50～55;

2. Medium carbon steel: 45 or 40Cr parts are subjected to high-frequency quenching, tempered at 350～370℃, HRC40～45;

3. The carburizing depth is 0.3mm;

4. Carry out high-temperature aging treatment.

1. All seals must be soaked in oil before assembly;

2. Strictly check and remove the sharp corners, burrs, and foreign objects remaining during parts processing before assembly. Ensure that the seal is not scratched when it is installed;

3. After bonding, remove the excess adhesive flowing out.

In addition to paying attention to the above matters during the machining of machine parts, it is also necessary to master a very good professional level for the order of precision machine parts processing. If you want to learn more about machine parts after reading the above, ZHONGKEN is happy to provide you with professional advice.

As a professional parts manufacturer, we have been advancing with the times since its establishment, committed to providing customers with high-quality and low-cost products, with the purpose of meeting customer needs, and continuing to provide customers with satisfactory products and high-quality services. We have a strict quality inspection system and a comprehensive management system, which can control the details of the products to the greatest extent. If you want to buy our machine parts, please don't hesitate to contact us immediately!