Various Processes in Metal Forming

Stainless steel deep drawing process is a manufacturing technology that shapes stainless steel sheets into complex hollow parts through molds and presses, which is widely used in automotive, home appliances, aerospace and other fields. Its core lies in the use of stainless steel (such as 304, 316 series) of high strength and corrosion resistance, through the mold radial compression and tangential extension of the material, the formation of deep cavity parts (such as shells, containers). The process needs to focus on die rounding design (usually R ≥ 0.8t), lubrication control (oil-based or solid lubricants) and temperature management (cold or warm drawing) to overcome the challenges of stainless steel's tendency to harden in cold working and high deformation resistance, and to ensure the dimensional accuracy and surface quality of the parts. Pretreatment includes annealing to soften the material and pickling to clean the surface, followed by step-by-step drawing and stringent quality control (e.g., CMM testing, mechanical property testing) to safeguard the performance of the finished product. This process is valuable in precision manufacturing where efficient molding and high strength requirements are sought.

 

 

Stainless steel bending process is a manufacturing technology of plastic deformation of stainless steel sheet through molds and presses, bending and molding at a preset angle, which is widely used in automotive, home appliances, construction and other fields. Its core lies in the use of stainless steel (such as 304, 316 series) toughness, through the mold compression of the material and the application of mandatory bending force, combined with pre-treatment (annealing softening, pickling and cleaning), parameter control (press tonnage, bending speed, temperature management) and lubrication and cooling, to overcome the material cold work hardening and deformation resistance, to ensure that the molding accuracy and surface quality. The process requires optimization of mold edge rounding (R value ≥ 0.5t), control of rebound margin (≤ 1.5 °), and quality control (laser goniometry, CMM testing) to ensure that the angle of the part, strength (such as 304 yield strength ≥ 205MPa) and no cracks, burrs and other defects. This process is efficiently adapted to the needs of complex modeling of medium-thin plates (0.5~6mm), combining high strength, corrosion resistance and the flexibility of automated production, and is a key technology for the realization of geometric structure rapid prototyping in precision manufacturing.

 

 

Stainless steel stamping process is a high-speed impact plastic deformation of stainless steel plate through the mold and press, to achieve punching, drop, bending, molding and other processes of manufacturing technology, widely used in automotive parts, home appliance panels, electronic components and medical equipment and other fields. The core of the use of stainless steel (such as 304, 316 series) of high ductility and toughness, through the mold to accurately control the flow of material, rapid production of thin-walled complex parts (thickness usually ≤ 3mm). Processes need to optimize the mold design (such as sharp edges, composite function integration), pretreatment (pickling to remove oxide, annealing to soften the high hardness of the material), stamping parameters (press tonnage to match the tensile strength, high-speed stamping to improve efficiency) and lubrication and chip removal, in order to overcome the risk of cold work hardening, rebound (≤ 3 °) and cracking. Quality control is done through CMM testing for dimensional accuracy (tolerance ≤±0.05mm), laser burr treatment to eliminate burrs, and verification of mechanical properties (e.g. 304 flexural strength ≥205MPa). This process has become the core technology for thin-walled parts manufacturing by virtue of its advantages of efficient mass production (hundreds of pieces per minute), high-precision molding (complex geometries in a single pass), low cost (material utilization ≥ 90%) and surface quality, and will be combined with digital tooling design (CAE simulation) and intelligent presses (IoT monitoring) in the future to move towards high flexibility and high reliability.