What sheet metal processes are involved in sheet metal fabrication in Luoyang?

　　What sheet metal processes are involved in sheet metal fabrication in Luoyang?

　　Based on the unfolded drawings and large-scale production requirements, different cutting methods are selected for Luoyang sheet metal fabrication, including laser cutting, CNC machining, shearing, and die-cutting. Subsequently, the relevant processing is carried out according to the engineering drawings. CNC machines are susceptible to damage from CNC cutting tools; for the production of certain shaped steel parts and irregularly shaped holes, significant burrs may form along the edges. These burrs can adversely affect the precision of the steel parts during subsequent mirror finishing processes.

　　In Luoyang’s sheet-metal fabrication process, edge materials that can be used are placed in designated areas to clearly display the raw materials when the sheet metal is bent. After steel blanks are cut, the edges, burrs, and contact points must be repaired (by grinding and polishing). The contact points of CNC cutting blades should be smoothed using a polished blade; for steel parts with larger burrs, an electric grinder is used for finishing. For internal hole contact areas, a small reamer is employed to ensure a smooth finish and enhance aesthetic appeal. Additionally, decorative elements in the exterior design help precisely position the sheet metal during bending, ensuring that the steel parts rest against the upper part of the bending machine during the bending process, thereby guaranteeing consistent specifications across batches of products.

　　After cutting and blanking in Luoyang sheet metal fabrication, the parts proceed to the next processing step. Different steel components follow the relevant process flows as specified by production and manufacturing regulations, including sheet metal bending, riveting, reverse tapping, welding, bulging, and step differences. Sometimes, after bending a metal sheet once or twice, nuts or bolts may get crushed. In areas where the die surface is uneven or protruding, it’s important to carefully consider the production and manufacturing process to prevent interference with subsequent operations and avoid unnecessary processing steps. When hooks are attached to the top cover or bottom shell, if welding becomes impossible after the sheet metal has been bent, the necessary production and manufacturing steps should be carried out before bending.

　　When bending sheet metal in Luoyang, the first step is to determine the thickness of the raw material based on the specifications outlined in the engineering drawings. For the lower die, it's crucial to ensure that the bending CNC blade and the blade groove are properly aligned to prevent the workpiece from colliding with the CNC blade and causing deformation. (Different models and specifications of lower dies may be used within the same product.) Depending on the thickness of the sheet metal, the upper die should be kept clean. Second, it’s important to define the sequence for sheet metal bending. The general rule for bending sheet metal is to differentiate between inner and outer bends: start with smaller bends before larger ones, and prioritize unique bends over standard ones. To begin, roll up the edges of the steel material—first bend the steel plate to an angle of 30–40 degrees, then use a leveling die to flatten and compact the steel.

　　When riveting sheet metal, you need to consider the aspect ratio of the nut and select appropriate dies. Then, adjust the working pressure of the press machine to ensure that both the nut and the steel surface are smooth, preventing the nut from being overtightened or protruding beyond the surface of the steel part, which could damage the steel component.

　　That’s all for today’s explanation on “What sheet metal processes are involved in Luoyang sheet metal fabrication?” Does everyone understand now? We hope the information shared above has been helpful to you. Thank you for watching, and we’ll see you again next time.