How to Determine the Quality of Finished Metal Chips Briquetting Press Products

Qualified metal chip briquettes should be uniform and regular in appearance, free of noticeable deformation, cracks, or defects, free of loose metal chips on the surface, and free of sharp protrusions or indentations on the edges. The overall shape of the briquettes must be inspected to ensure they meet pre-set standards. For example, the length, width, and height ratios are consistent, with no skew due to uneven molding. The surface of the briquettes should also be inspected for oil stains or impurity buildup. Obvious defects or excessive impurities will not only affect subsequent transportation and storage but may also reduce smelting and recycling efficiency. Such conditions may preliminarily indicate that the finished product is unqualified.

Physical properties are key to determining the quality of the finished product. The density and hardness of the briquettes must be tested in practice. Briquette density can be calculated by weighing and measuring volume. Acceptable products should meet pre-set standards and exhibit no low density due to insufficient compression. Briquette hardness can be assessed using a hardness tester or by observation. Acceptable briquettes should exhibit sufficient hardness and not break or become loose even with the slightest impact. The briquets' drop resistance is also tested. If the briquets remain intact and undamaged from a reasonable height, the physical properties meet the standards. Otherwise, they are unqualified.

The purity of metal chip briquettes directly impacts their subsequent recycling value, so they must be inspected for foreign matter. Visual inspection or partial disassembly can confirm the absence of non-target impurities such as plastic, wood, and stone. These impurities can generate harmful gases during smelting or affect metal purity. Also, check for excess oil residue. If the oil content is too high, it is necessary to determine whether it exceeds recycling standards. Excessive oil not only increases smelting pre-processing costs but also may pose environmental risks. Briquettes with excessive impurities and oil residue do not meet quality requirements.

Evaluate the suitability of the briquettes based on their intended use. If used for smelting and recycling, confirm that the briquettes' size and weight meet the furnace feed requirements, ensuring that they are not too large to feed or too small to feed efficiently. If used for transportation and storage, check that the briquettes are easy to stack and prone to tipping or deformation. Qualified briquettes should exhibit good stacking stability to minimize damage during transportation and storage. If the briquettes fail to meet actual use requirements, they will be considered unqualified, even if their appearance and performance meet the standards.