In-depth analysis of precision stamping industry knowledge

Precision stamping parts are high-precision metal parts manufactured through stamping processes and are widely used in many fields such as electronics, automobiles, and aerospace. Compared with ordinary stamping parts, precision stamping parts have the characteristics of high dimensional accuracy (the tolerance can usually be controlled within ±0.05mm), complex shape, and good cross-section quality (burr height is less than 0.1mm). The stamping process uses stamping equipment and molds to apply pressure to the metal sheet to cause it to plastically deform or separate, thereby obtaining parts of the desired shape and size. In the field of electrical connections, Punching Metal Stamping Copper Contact Parts are typical precision stamping products. The flatness and surface roughness of the contact area directly affect the stability of the contact resistance. For switch and socket products, Switch Socket Precision Custom Metal Stamping Parts need to ensure that the plugging and unplugging times can reach thousands of times without obvious contact pressure attenuation. In electrical protection equipment such as circuit breakers and relays, the silver contact riveting parts of Electrical Contact Metal Copper Stamping Parts need to undergo precise stamping positioning and riveting processes to ensure that the silver layer does not fall off during repeated breaking.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Commonly used materials for precision stamping parts include carbon steel, stainless steel, copper alloy, aluminum alloy, etc. Different materials have different characteristics to suit various application scenarios. Carbon steel has high strength and hardness and is suitable for manufacturing structural parts that can withstand large loads; stainless steel has good corrosion resistance and is often used in environments that require high corrosion resistance; copper alloys are widely used in the electronic and electrical fields because of their excellent electrical and thermal conductivity. In precision stamping, the thickness tolerance of the material is relatively strict, and it usually needs to be controlled within ±5% of the nominal thickness of the material to ensure dimensional stability during the stamping process; the surface of the material should be smooth, without cracks, scratches and other defects, otherwise it may affect the surface quality of the stamped parts and subsequent electroplating adhesion properties.

 

OEM Precision Copper Sheet Metal In stamping, the selection of copper material is particularly critical-commonly used copper alloys include brass (such as H62, H65), phosphor bronze (such as QSn6.5-0.1) and red copper (T2). Brass has good stamping formability and elasticity, and is suitable for use in switches and sockets. Elastic contacts; phosphor bronze has higher fatigue strength and stress relaxation resistance, and is suitable for manufacturing terminals that require long-term maintenance of contact pressure; red copper has the highest electrical conductivity (up to 98% IACS or above), but low strength, and is usually used in situations where electrical conductivity requirements take precedence over mechanical strength. For Copper Alloys Metal Stamping, the grain size and hardness state (semi-hard, hard or spring hard) of the material have a direct impact on the rebound amount and dimensional accuracy after stamping. The material selection needs to be comprehensively determined based on the functional requirements of the part and the stamping process.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The manufacturing of precision stamping parts involves a variety of stamping processes, among which blanking is one of the most basic processes, including blanking and punching. During the punching process, the cutting edge sharpness of the mold and the gap between the convex and concave dies have a significant impact on the cross-section quality and dimensional accuracy of the stamping parts - the sharp cutting edge can ensure the flatness of the punching section and reduce the height of the tear zone; and a suitable gap (usually 5%-12% of the material thickness) can reduce burrs and sagging. The bending process is used to manufacture stamping parts with certain angles and bending shapes. The springback of the material during bending is an engineering issue that needs to be focused on. The springback will cause the bending angle to deviate from the design requirements. Generally, the amount of springback needs to be controlled through overbending compensation in the mold design (that is, the mold angle is smaller than the angle required by the product) and adjusting the bending force.

 

The drawing process is often used to manufacture stamping parts with deep cavity shapes such as cup-shaped and cylindrical shapes. Defects such as wrinkles and cracks are prone to occur during the drawing process. In order to avoid these problems, it is necessary to reasonably design the convex and concave die fillet radii of the drawing mold, and control the drawing speed and blank holder force. In the field of electrical switches, Copper Stamping Contact For Electrical Switch is usually produced using a composite mold or a progressive mold - the composite mold can simultaneously complete blanking and punching in one stamping stroke, ensuring the concentricity of the inner and outer shapes; while the progressive mold distributes multiple processes (such as punching, punching, punching, bending, and forming) in different stations of a continuous mold. Each step of the automatic feeding mechanism completes a stamping cycle. It is suitable for the production of contact parts with high-volume and high consistency requirements.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Precision stamping parts occupy a fundamental position in the field of electronic, electrical and communication equipment. In products such as switches, sockets, circuit breakers and relays, Punching Metal Stamping Copper Contact Parts are core conductive components. The flatness and surface roughness of their contact areas directly affect the stability and electrical life of the contact resistance. Switch Socket Precision Custom Metal Stamping Parts Toggling the contact piece, it is necessary to ensure that sufficient contact pressure can be maintained after thousands of plugging and unplugging. It has high requirements on the elastic modulus of the material and the stress relief process after stamping. Among connector and terminal products, Electrical Contact Metal Copper Stamping Parts and Elctrical Contact Copper Metal Stamping Terminal are continuously stamped and formed using high-precision progressive dies. The elastic arms at the plug-in and pull-out ends are precision bent and formed. Their positive force and holding force must meet industry standards to ensure that no instantaneous interruption occurs in a vibration environment. In addition, Copper Stamping Contact For Electrical Switch is widely used in micro switches and temperature control switches in home appliances. It is necessary to ensure that there is no obvious electrical wear and tear transfer of the contact material after tens of thousands of on and off times.

 

In the automobile manufacturing and new energy and high-end equipment industries, the application of precision stamping parts is equally extensive and critical. OEM Precision Copper Sheet Metal Stamping is used to manufacture connecting sheets between new energy vehicle battery modules and conductive terminals in high-voltage distribution boxes. The copper connecting sheets need to carry hundreds of amperes of current. The cross-sectional shrinkage and edge burr height after stamping need to be strictly controlled to avoid local overheating. Copper Alloys Metal Stamping uses phosphor bronze to punch connector terminals in automotive electrical systems. Its excellent stress relaxation resistance ensures long-term stable contact pressure in the high-temperature environment of the engine compartment. Metal Copper Stamping Bracket Parts are used to fix sensors, wiring harnesses or control modules, while Custom Metal Brackets Spring, such as clutch return spring brackets, etc., have strict requirements on the consistency of the elastic curve after stamping.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The company can customize a full range of Precision Copper Stamped Parts products on demand, strictly follows high-precision production standards and a full-dimensional quality inspection system, strictly controls product dimensional accuracy, appearance quality and performance, and provides customers with high-precision, high-stability one-stop stamping accessory solutions.