Deep Drawing Technology For Brass Metal Socket Terminal Metal Stamping Parts

Deep stamping is the core process for the plastic forming of brass, using pressure equipment and molds to transform brass sheet blanks into hollow precision components. It is the basic process for mass production of electronic connectors. Brass Metal Socket Terminal Metal Stamping Parts mostly adopt the deep stamping process for one-piece molding. The mainstream selection is H65 and H68 soft brass sheets. These copper-zinc alloys have a zinc content of 30%-35% and a high elongation rate, which can adapt to the complex structures of ultra-thin terminals with multiple bends. From the raw material perspective, this process avoids problems such as cracking and uneven thickness in the stamping process. The entire molding process is divided into four stages: blanking, side wall stretching, shaping, and demolding. For complex terminals, multiple passes of deep drawing and intermediate annealing processes are also required.

The mechanical indicators of brass directly determine the yield rate of the stamped terminal products. The strain hardening index and thickness anisotropy coefficient are the two core criteria for material selection. Brass Stamping Contact Connector Accessories has extremely high requirements for the uniform flowability of the sheet material. High r-value brass can reduce wall thickness thinning during the stamping process, and high n-value can delay the necking and cracking caused by local stress concentration. In industry production, lead-containing brass is generally avoided for ultra-thin socket terminals. This type of material has excellent cutting performance but poor cold stamping plasticity, and is prone to cracks at the terminal latch and spring-clip positions. At the same time, the surface of the blank material needs to be kept smooth without oxidation or scratches. Surface flaws will form stress points during stamping, significantly reducing the yield rate of terminal products.

Precise design of mold parameters is the key to stable production of qualified Electrical Metal Brass Terminal Stamping Part. The gap between the concave and convex molds, the radius of the round corner, and the draw-in device all have standardized control ranges. During deep stamping processing, the unilateral gap of the mold is usually set to 1.07 to 1.1 times the thickness of the sheet material. The entrance round corner of the concave mold is controlled at 5 to 10 times the thickness of the sheet material. Too small a gap will increase friction and cracking of the terminal, while too large a gap will cause the side wall to wrinkle and the dimensional accuracy to be out of control. Matching an elastic draw-in ring can output a constant pressure, effectively preventing the terminal flange area from deforming and wrinkling. The polished and chrome-plated working surface of the mold can also reduce surface scratches of the terminal.

During the production process, various process parameters need to be dynamically adjusted. The stamping speed, lubrication scheme, blank size, and heat treatment process are all indispensable. During production, an appropriate stamping speed is selected. If the stamping speed is too fast, the local temperature of the sheet material will rise, causing dimensional rebound deviations. The special stamping lubricant for copper alloys can reduce the friction between the mold and the sheet material, ensuring smooth formation of the spring clip and insertion position. Intermediate recrystallization annealing must be added between multiple deep drawing processes to eliminate the recovery of the plasticity of the cold processing and the brittleness of the brass. The blank size is calculated based on the constant principle of the part volume and a standard trimming allowance is reserved to ensure the regularity of the Electrical Brass Switch Socket Part shape.

Deep stamping production of brass is prone to four typical defects: cracking, wrinkling, scratches, and dimensional deviation. The industry has formed a mature problem-solving system. The bottom corner is the high-risk area for cracking. By enlarging the round corner of the mold, lowering the draw-in force, and optimizing the lubrication, it can be improved; flange wrinkling is mostly caused by insufficient draw-in force, and appropriate pressure can alleviate the problem. The rebound caused by the low elastic modulus of brass will cause dimensional deviations in the terminal insertion. Manufacturers will reserve the rebound compensation amount in the mold design and combine with regular mold maintenance to maintain stable Electrical Contact Assemblies Brass Stamped Parts insertion and clamping accuracy.

The brass deep stamping process integrates materials science, mold design and precision processing technology, enabling large-scale standardized production of socket terminals. As a core component for electrical connections, Brass Stamping Parts Electronic Components have strict requirements for forming accuracy, mechanical lifespan, and conductive stability. Only by synchronously controlling the three dimensions of brass material, mold structure, and stamping parameters can high-ability terminals with low contact resistance and long insertion and removal life be continuously produced. With the development of new energy and industrial control electronics, the market demand for ultra-thin and miniaturized brass stamping terminals is continuously increasing. The deep stamping process is also continuously evolving and upgrading.

By combining this complete set of mature deep stamping processing technology, we professionally create full specifications of Brass Metal Socket Terminal Metal Stamping Parts. They can be made of high-quality soft brass H65/H68, support customized stamping structures, and surface treatments of tin plating / silver plating, strictly control stamping defects, and the products have excellent salt spray resistance and long insertion and removal lifespans. They cover various assembly scenarios in household appliances, new energy, and industrial control equipment, and can be produced and prototyped in various sizes and batches.

Customers with Electrical Industrial Brass Copper Stamping Accessories sample requests or batch purchase needs are welcome to communicate, consult, and place orders for cooperation at any time.