Technical analysis of the application of Cold Stamping Brass for Switch

Relay Pin Brass Terminals are widely used in the field of complex cold-stamping parts. The core reasons are its excellent cold forming performance, good comprehensive mechanical properties and reliable post-processing process adaptability. For manufacturing companies engaged in Brass Sheet Metal Stamping, it is crucial to have an in-depth understanding of the material's characteristics and process points.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Brass Sheet Metal Parts Terminal has a nominal copper content of about 68% and a zinc content of about 32%. It is a single-phase alpha brass. Its face-centered cubic lattice structure gives the material extremely high plasticity (elongation usually ≥50%) and excellent cold deformation ability at room temperature. Compared with dual-phase brass (such as H62) containing β′ phase, α brass has no hard and brittle phase in the cold state, so it is not prone to microcracks or fractures during severe deformation processes such as deep drawing, stretching, and flanging. It is especially suitable for parts with complex shapes and large deformations. Its work hardening rate is moderate, which not only ensures the deformation potential, but also obtains a certain strength improvement after forming. This feature is particularly critical in Electrical Brass Metal Stamping for Socket Switch applications.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Complex cold stamping parts usually have the characteristics of large depth-to-diameter ratio, changeable contours, and sudden cross-sections, such as automobile dashboard brackets, precision electronic connector shells, musical instrument parts, high-end decorative parts, etc. Sheet Metal Brass Stamping can perfectly meet these requirements:

High forming limit: Its high plasticity allows the material to undergo substantial flow and redistribution in the mold, and can form fine ridges, grooves and protrusions with high dimensional accuracy and small rebound. This characteristic makes it particularly outstanding in the Sheet Metal Brass Stamping process.

Good surface quality: After cold stamping, the H68 brass plate has a smooth surface and is not prone to "orange peel" or surface tearing. It is very beneficial for subsequent electroplating, spraying or direct use as appearance parts. High-quality surface condition is particularly important for products that require subsequent surface treatment, such as Silver Plated Brass Terminal. Intermediate annealing adaptability: For ultra-deep stamping parts that require multi-pass molding, Brass Contact Plug Pin for Electric Switch Socket Parts can be annealed at low temperatures (such as 400-500°C) in the middle of processing to effectively eliminate work hardening and restore plasticity, thereby achieving continuous and complex molding processes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Despite its superior performance, the following points should be noted when applying Electrical Brass Press Parts For Switch Sockets for complex cold stamping to avoid quality risks: Residual stress and seasonal cracking: H68 brass is sensitive to residual stress. The residual stress inside the parts after stamping may cause stress corrosion cracking (quaternary cracking) in environments such as ammonia and moisture. Key parts must undergo stress relief annealing (260–300°C, heat preservation for 1–2 hours) after stamping.

 

Mold design and lubrication: Because the material is soft, the mold gap and fillet radius need to be designed accurately. It is recommended to use fine blanking or composite mold technology. High-efficiency lubricants such as stamping oil containing extreme pressure additives must be used. Poor lubrication will lead to surface scratches and abnormal mold wear. Blank state selection: According to the amount of deformation, soft (M), semi-hard (Y2) or hard (Y) blanks can be selected. Complex deep-drawn parts usually start from the soft state.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

We can provide customized precision stamping parts manufacturing services based on high-quality brass such as Cold Stamping Brass for Switch. With mature stamping and electroplating processes, we can ensure the excellent conductivity, dimensional accuracy and reliability of the parts to meet your specific needs for electrical connection accessories and metal structural parts. Welcome to inquire and cooperate.