Surface treatment is the process of converting one material into another object’s surface through processing, which can enhance the aesthetic appearance of an object. At present, we commonly use baking paint and electroplating. Before electroplating, polishing is generally necessary to further reduce the roughness of the forging surface and obtain a bright appearance.
Electroplating is a chemical process that involves redox reactions between the anode and cathode electrodes through two types of conductivity under the action of an external DC power source. It refers to a surface processing method in which the cations of the metal to be plated are deposited on the surface of the substrate metal through electrolysis in a salt solution containing the metal to be plated, using the substrate metal as the cathode, forming a coating. The performance of the coating is different from that of the base metal and has new characteristics. According to the function of coatings, they are divided into protective coatings, decorative coatings, and other functional coatings.
Baking paint is generally divided into two types: powder and liquid. Our company mainly uses the following three types of substrates: stainless steel, alloy steel and aluminum. The characteristic of baking paint is its wide applicability and relatively cheap price.
Forging packaging, after being wrapped in moisture-proof paper, can be wrapped with hessian cloth and tied with soft metal wire or wrapped with moisture-proof paper before being loaded into a wooden box. For larger forgings, they can be wrapped with hessian cloth or tied with soft metal and fixed on wooden pallets with steel strips or iron wires.
- 1. Packing list: The packaged products should have a packing list, which should have a certain degree of moisture resistance and indicate: A. Supplier name; B. Name or code of the purchaser; C. Product name and contract number; D. Product brand, specification, and batch number; E. Box number and net weight; F. Inspection stamp G, packaging date.
- 2. Transportation mark: A. Transportation number; B. Arrival; C. Name and code of the receiving unit; D. Contract number and box number; E. Product name; F. Net weight (gross weight) total number of pieces; G. Name of shipping unit and shipping station; H. Factory date.
- 3. Transportation packaging instructions: According to the nature of the product or the requirements of its corresponding technical standards, there should be obvious transportation packaging instructions on the packaging box, such as words and signs such as “moisture-proof”, “upward”, and “lifted from here”.
- 1. The packaging of forgings should ensure that the product is not loose, damp, deformed or damaged during transportation and storage;
- 2. Products in the same box, bundle, or package should be from the same batch. In special circumstances, when several batches of products are packed into the same box, they should be bundled, packaged, and clearly marked separately;
- 3. The weight and dimensions of each package should comply with the shipping regulations of the relevant carrier department;
- 4. When packaging in boxes, the walls of the boxes should be lined with polyethylene plastic film or neutral moisture-proof paper. When packaging products, the pieces inside the box must be filled and fixed with paper scraps or other materials to prevent movement or collision. After packaging the products, the packaging materials on all four sides should be folded up and covered with 1-2 layers of moisture-proof paper before being stamped or sealed. When packaging in boxes, the inside of the box should be as full as possible, and the loading capacity of each box should not be less than two-thirds of the volume of the box. The empty part in the box shall be filled and plugged with paper scraps or foam plastics to prevent movement;
- 5. When using various materials for bundling and shipping, they should be firmly bundled, and if possible, the bundling should be structured with one end flush. The length of products in the same bundle should be approximately the same. The bundling should be wound in sections, with a dead knot made every 5 to 10 turns. The horizontal and vertical intersections should be made with a buckle lock. Each bundle should be wound in no less than 3 layers and should be evenly arranged starting from the end.