Understanding Copper Stamping And Copper Stamping Parts

Copper Stamping

Stamping is a forming process in which a press processes a copper metal and a die to produce plastic deformation or separation to obtain a workpiece of the desired shape and size (stamped part).

Copper alloys and copper stamping process characteristics

Three copper alloy stamping materials are brass, bronze, and white copper. Copper stamping refers to the highest amount of copper, also known as purple copper, because of its purple-red color. The main component is copper plus silver, with 99.5 to 99.95% content; the main impurity elements: are phosphorus, bismuth, antimony, arsenic, iron, nickel, lead, tin, sulfur, zinc, oxygen, etc. Because the characteristics of various types of copper are different, the way of processing is also different.

Pure copper and brass stamping processability are better, but H62 is stronger than H68 brass cold work hardening. Bronze is somewhat worse than brass in stamping processability and has a strong cold work hardening phenomenon; therefore, when stamping, as needed, frequent intermediate annealing should be performed for softening treatment to improve stamping processability. Bronze and brass are generally stamped in the cold state and are not suitable for stamping in the hot state.

Pure brass is applied to easy hot pressing and cold pressure processing and is used in magnetic instruments and meters, compasses, and aviation instruments. Brass is high in strength, hardness, and chemical corrosion resistance. There are also cutting and machining outstanding mechanical properties. Brass has strong wear resistance, has a good cold working properties.

Bronze has a low melting point, high hardness, high plasticity, wear resistance, corrosion resistance, bright color, and other characteristics suitable for casting a variety of appliances, mechanical parts, bearings, gears, etc. Bronze has good castability, wear resistance, and chemical stability. Cold processing performance is good.

The pure copper stamping process is suitable for hot and cold stamping, while brass and bronze are suitable for cold stamping but not for hot stamping.

The difference between copper stamping and ordinary stamping

When it comes to processing equipment, the processing equipment of copper stamping is the same as that of ordinary stamping, semi-automatic punching machine production, which is less efficient. If the product needs to be processed in multiple processes, one requires more than one press, and the other increases the number of workers; each press completes one process and then moves to another machine, reducing stamping efficiency and increasing the cost of the product. For products with simple processes, multi-process stamping dies are more suitable. Although multi-process dies are more complicated, they are more suitable for copper stamping products, which not only ensure the accuracy of the products but also increase the production output.

In other words, there is no big difference between copper stamping products and other materials in the production process, but the materials used are different. The specific processing should be customized according to the applicability and requirements of the product.

Copper stamping parts

Applications:

It can be used as a construction material and can form a variety of alloys. Copper alloys have excellent mechanical properties and low resistivity, of which bronze and brass are the most important. In addition, copper is a durable metal that can be recycled many times without destroying its mechanical properties.

The stamping parts made of copper by cold stamping process are called copper stamping parts. The material of copper stamping parts is not pure copper, the raw material of copper stamping parts is mostly copper alloy, and other metal elements are added to pure copper to improve the wear resistance of copper parts and some other special properties.

In today’s society, copper alloy and its stamping parts are used in many fields such as electric power, light industry, machinery manufacturing, construction, national defense, electronics, communications, and other national economies and people’s livelihood, and its application is very wide. It is second only to aluminum in China’s consumption of non-ferrous metal materials.

What surface treatment is needed for copper stamping parts

The copper descaling process mainly has the following kinds.

1. for copper stamping parts with just a little rust and oil stains: copper rust remover degreasing agent – water washing – copper chromium passivation solution – water washing – copper protective film solution.

2. for copper stamping parts with slight rust: copper degreasing agent – water washing – ultrasonic cleaner – water washing – copper chromium passivation solution – water washing – copper film protection solution treatment.

3. For copper stamping parts with serious rust: treat with copper degreasing agent – water washing – copper pickling and polishing solution – water washing – copper passivation solution – water washing – then treat with copper film protection solution. Treatment.

Due to the different sizes of the stamping parts, the different performance of the required conductive welding, and the different materials used, the selection of the descaling process is also different. The stamping manufacturer should analyze the specific situation and choose the descaling process for copper stamping parts.

The characteristics and advantages of copper stamping parts include

Electrical and thermal conductivity: Second only to silver, copper has excellent thermal conductivity, making it the primary material for electrical, HVAC, and gas pipe applications.

Surface finish: A beautiful “non-ferrous” metal, copper is often chosen for architectural, design hardware, and consumer applications.

Durability and corrosion resistance: Copper is non-reactive and will not become brittle in sunlight or at low temperatures. It can also be alloyed with other metals to improve corrosion resistance in adverse environmental conditions.

Ductility and Ductility: Copper’s high flexibility and elasticity after hardening make it ideal for wiring, plumbing, and other industrial applications.

Hygienic: Copper is a naturally hygienic metal with antimicrobial properties in the food and beverage industry.

Sustainability: Copper is highly recyclable and does not degrade or lose mass, making it an attractive green option.

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