What is metal stamping? How many metal stamping methods are there?

Metal stamping or stamping is a type of manufacturing process by which a metal is subjected to a compression load between two molds. Stamping is a cutting process for the production of flat parts from different materials (metal sheet ) with a stamping press or by hitting a cutting tool with a hammer head. In the case of metallic materials, shear cutting is usually used, in which the cutting tool consists of two parts: The base has a recess that corresponds to the shape of the punch used (with a certain tolerance). The contour of the shape to be punched out is thus notched from above and below by the cutting edges of the base and the punch and finally sheared off. The load can be a progressively applied pressure or a percussion, for which both presses and rams are used. The molds are steel dies or dies, one of which slides through a guide (hammer or upper die) and the other is fixed (anvil or lower die).

If the temperature of the material to be deformed is higher than the recrystallization temperature, it is called hot stamping, and if it is lower it is called cold stamping.

Stamping Tool Description

A Stamping tool consists of the punch, which represents the inner shape, and the die, which has a suitable opening (example: punch). Depending on the tool structure, the punch can be both the upper and the lower part of the Stamping tool. Depending on the application, the counterpart to the Stamping can also be a flat surface. Then the upper part of the tool consists of a correspondingly shaped, closed Stamping knife (e.g. punch pliers, punch, production of beer mats). The base is made of a softer material than the knives, which are often referred to as the cutting line.

Periodic Stamping of small circular segments in a row to cut out sheet metal parts is known as nibbling. There are hand-operated nibbling machines, nibblers as an electric hand-held device and also CNC-controlled nibbling machines.

In high-performance stamping, processes such as welding, flanging, riveting and forming are integrated into special progressive tools. These sometimes highly complicated tools need to be used effectively and effectively protected.

The waste that arises during stamping is called punched slugs.

When stamping cardboard and corrugated cardboard, the stamping tools contain not only the stamping knives but also creasing lines, so that stamping and creasing (preparation of the folded edges) take place in one operation; In this case, the stamping base is usually provided with creasing arrangements.

CNC Stamping

With CNC stamping, the material (sheet metal) moves between the stamping tools. It is captured at the edge and shifted accordingly. The machine selects one of its tools depending on the shape to be punched out (nibblers for complicated shapes, narrow squares for squares of various sizes, round punches for circular disks, special tools for frequently repeated special shapes). This process is used, for example, to manufacture machine housings or control cabinets. The process is used in the production of small and medium-sized series. It competes with laser cutting here; but there are also combined machines.

Hot stamping

This type of stamping is carried out with the material at a higher temperature than the recrystallization temperature, which in the case of iron is 910ºC.
The product obtained has lower roughness (mechanical) and dimensional precision than when working cold, but with the advantage of being able to obtain higher deformations when hot.

Cold stamping

Cold stamping is carried out with the material at a lower temperature than the recrystallization temperature, so the grain is deformed during the process, obtaining anisotropy in the microscopic structure. It is usually applied to pieces of less thickness than when working hot, usually plates or sheets of uniform thickness.

The main cold stamping operations are:
stamping: stamping (making holes), cutting (separating pieces from a sheet) or coining.
Bending deformation between dies: curved, folded or rolled.
The materials used in cold stamping are ductile and malleable, such as low alloy steel, aluminum alloys (preferably magnesium, without copper), brass, silver and gold.

SUCCESS IN stamping FOR MORE THAN 15 YEARS

Growth has allowed us to expand our stamping capabilities beyond the deep stamping niche. Today we have the skills, people, and equipment to offer a variety of metal stamping solutions.
KANGDING can meet any of your metal stamping demands, including automatic transfer presses, inline and progressive presses, high-volume blanking applications, as well as specialized low-volume stampings, and of course, deep sausages.

Deep embedded

With millions of deep drawn compressor housings, we are experts in deep drawn technology. This superiority is what separates KANGDING from other typical metal stamping companies. Our housings, produced under the deep drawing process, have been used in the production of millions of compressors for air conditioning.

At KANGDING we produce parts for different types of compressors. We also have blanking, manufacturing, machining, welding and assembly capabilities, these capabilities complement our experience. Our progressive die welding process provides our customers with increased efficiency along with financial benefits in their manufacturing process.

AUTOMATIC IN-LINE / TRANSFER / PROGRESSIVE PRESSES

We have the necessary equipment and press to meet your needs, we have hydraulic and mechanical presses in various locations.

We have hydraulic presses from 100 to 1000 tons of capacity. While our mechanical presses are from 100 to 3000 tons.

With our wide variety of sizes and tons, we surely have presses in one of our plants that can serve you. We have manual and automatic presses with the ability to weld within the die, as well as threaded, finally we have multiple lines of tandem presses of various sizes.

HIGH VOLUME APPLICATIONS

We have the structure to meet any production request. With warehouses and processes to deliver just in time, KAMGDING can meet any delivery time.

Shopping
It's simple, the best results come from the best materials. We work with your sources and our supplier base to acquire the best raw materials and obtain the best solutions.

Team
We proudly maintain an extensive inventory of presses, which are complemented with auxiliary equipment that includes, overhead cranes, unwinders, straighteners, feeders, robots, in-line washers with anti-oxidant applicators. Because of the ability we have to offer a variety of openings, bed sizes, and feeder options, we make sure we have the ability to meet any need. Our presses can handle rolls of steel of up to twenty tons thus limiting the loss of time caused by excessive changes.