Carbide Stamping Die

Carbide stamping die has good hardness and wear resistance, which is better than any other type of die steel, but still need to be improved in terms of toughness. The material used in this die needs to meet the requirements of low impact and high wear resistance, and hard alloys with lower cobalt content can be selected. Hard alloys with high cobalt content will be used in die with high impact resistance.

The Punching Process of Carbide Stamping Die

Blanking is a process of separating materials through the concave and convex die inside the die. Carbide stamping die technology is a commonly used processing method in the manufacturing industry, used to manufacture complex metal parts. The carbide stamping die process mainly includes the following steps:

1.Material Selection

Firstly, it is necessary to select the corresponding metal material, usually using thin sheet metal, such as steel plate, aluminum plate, etc The design of the carbide stamping die should meet the shape and size requirements of the parts, and design high-quality stamping die. There are many components in die design, including punches, bases, guide pillars, etc.

2.Material Cutting

Cut metal materials into specified sizes and shapes according to design requirements. Carbide stamping die manufacturing: The most commonly used method for producing metal stamping die based on the designed shape is to process and heat treat the steel to ensure that the die has good strength and wear resistance.

3.Assembly and Debugging

Assemble the manufactured stamping die and debug them to ensure that the opening and closing motion and machining accuracy of the die meet the requirements. Manufacturing components: Place the prepared materials on a stamping machine, process them using a die, and use a punch to change the shape of the materials, ensuring that the product can be smoothly formed.

The distance between the cutting edge dimensions of the punching concave-convex die will be relatively gap. Gaps will have an impact on the lifespan of the die. Gaps can have an impact on blade breakage: when punching with small gaps, the vertical force and lateral pressure of the concave-convex die edge will become greater. If the die is limited by production errors and assembly precision, the convex die will not be perpendicular to the concave die, and the gap will be unevenly distributed.

Deep Drawing Process of Carbide Stamping Die

A deep drawing die, also known as a drawing die, is a commonly used stamping method that uses a carbide stamping die to cut a flat blank into a specified shape and extend it into an open and hollow workpiece under the action of equipment. It can also change the shape of a workpiece that has already been made. The drawing die has five structures, mainly composed of a fixed seat, a pressing edge ring, an ejector, a concave die, and a convex die. Molybdenum vanadium cast iron can be used to cast convex die, concave die, and pressure rings. Then, after processing, the edges, concave die, and rounded corners will be subjected to surface flame quenching. Using gray cast iron to cast fixed seats, an annealing treatment is used after drawing die casting to reduce casting stress.

The deep drawing process can be mainly divided into several techniques, including elliptical drawing, mountain drawing, cylindrical drawing, and rectangular drawing. Cylindrical and rectangular deep drawings are commonly used.

1.Deformation Process of Cylindrical Deep Drawing

Cylindrical deep drawing is a processing technique that deepens flat and circular sheet metal into cylindrical-shaped workpieces. During the deep drawing process, due to the anisotropy of the sheet metal, differences in thickness, changes in position, or uneven gaps in the deep drawing die, the produced workpiece may have uneven tops. Operators should take edge trimming measures after deep drawing. Before calculating the size of the blank, the selection of deep drawing workpieces should leave a margin for edge trimming.

The characteristics of cylindrical deep drawing

Firstly, the wall thickness of the deep drawn part is uneven, with a slight increase in the mouth wall thickness and a slight decrease in the bottom wall thickness. The thinning is most severe near the bottom corner. When the degree of deformation is too severe, the tensile stress on the wall exceeds the tensile strength of the material, and tensile cracks will occur in the area with the most severe thinning.

Secondly, during the processing, the main deformation zone is the flange part of the billet. The transmission zone is the remaining part that only undergoes small changes in shape, but must withstand and generate deep drawing forces.

Thirdly, the deformation zone is subjected to tangential compressive stress and radial tensile stress, which can cause deformation, including tangential compression and radial elongation. If a large degree of deformation occurs, the deformation zone mainly experiences instability and wrinkling.

Fourthly, each part of the deep drawing part has its hardness, and the hardness of the workpiece is not the same. If there is significant deformation in the mouth, cold work hardening will become more severe, resulting in higher hardness; The lower hardness is caused by minimal deformation at the bottom, resulting in minor cold work hardening.

2.Rectangular Deep Drawing

During the deep drawing process, the low rectangular part formed by a single stretch has corresponding positions for each part of the blank, and different processing is carried out according to the situation of each part, with different stress conditions for each part. The tensile resistance at the straight edge during deep drawing is smaller than that at the fillet of the flange deformation zone, and the degree of deformation at the straight edge is smaller than that at the fillet.

The advantages of deep drawing deformation of rectangular parts

During the deep drawing process of rectangular parts, there will be complex shape changes and stress. Rectangular parts are different from rotating deep-drawn parts. Compared to cylindrical parts, the stress and deformation during the deep drawing process of cylindrical parts are axisymmetric. However, there are many types of rectangular parts, mainly including square parts, oval parts, etc. During the manufacturing process of rectangular deep-drawn parts, uneven deformation occurs, with significant shape changes occurring at the corners and small shape changes occurring at the straight edges, similar to bending deformation. However, during the deep drawing process, there will be a close connection between the corner part and the straight edge part. The shape of the rectangle plays a very important role, and the greater the change in the shape of the rectangle, the greater the degree of influence it will have.

3.Yamagata Stretching

During the production process, the sidewalls are suspended. If the forming is completed and then the die is attached, the deformation characteristics of different parts of the sidewalls during the forming process are also different.

4.Deep Stretching

Deep stretching requires multiple deep drawing processes to be completed and requires at least two deep drawing processes. Wide flange deep drawing parts need to be drawn to the specified flange diameter in one go, and the flange diameter should also be the same as the first one during the second stretch.

The Forming Process of Carbide Stamping Die

Working mechanism of sheet metal forming: Metal sheet metal forming is suitable for many types of processes, such as forming, bending, rotating, and stretching. In general, parts or products are formed by pressing metal plates between die and tools. The following is a simple breakdown of the sheet metal forming process：

Firstly, cut the required metal plates from the available inventory as individual blanks. The main metals used in the forming process are aluminum, steel, copper, and their alloys. The thickness of each type of metal sheet also varies, and the type of metal used determines the thickness of the product to be manufactured. In general, a plate thickness of up to 6 millimeters will be used for curing.

The next step is to set up: place the desired shape of the board material between the tools in the dyeing machine. Because force is applied through an electronically controlled CNC punching machine. The final metal will be formed into the specified shape. One of the main characteristics of this process is that it can form multiple blanks in one process. This means that when producing parts in large quantities, this process will be very efficient.

The characteristics of bulging deformation: During bulging deformation, the plastic deformation of the blank is limited to a fixed deformation zone, and the material does not transfer outside the deformation zone, nor does it enter the deformation zone from the outside. To achieve an increase in surface area, it is generally only necessary to reduce the thickness of the blank.

Carbide stamping die forming is a manufacturing process used to manufacture metal materials or coils for lightweight parts. The parts formed from metal sheets have high strength and good ductility. Compared to ordinary metal sheet metal processes, Carbide stamping die forming is a more cost-effective process. There are many forming methods, mainly including undulating forming, shaping, bulging, flipping, flanging, etc.

Carbide Stamping Die