Carbide punching pin, also known as tungsten steel punching needle,
is fine grinded of hard alloy round bar. It has the properties of
high precision, high hardness and good bending strength, suitable
for hardware and electrical processing industry. It is generally
used for punching on stamping dies to separate or plastically
deform the material to obtain the required parts. Due to its
characteristics of high hardness, long service life, corrosion
resistance and no rust, it is widely used in industrial machinery
manufacturing and processing.
The punching pin is one of the precision mold parts, and is used to
enhance the strength of the thimble and prevent the thimble from
being deformed or broken. As one of the important connector mold
parts, the punching pin has great influence on the normal operation
of the mold. So, the punching pin processing requirements are high.
When the punching pin is plastically denatured in the mold cavity,
it flows and slides along the surface of the cavity, causing severe
friction between the surface of the cavity and the punching pin.
Thus, the friction causes the punching needle to fail due to wear.
Therefore, the wear resistance of the material is one of the most
basic properties of the pin. Hardness is a major factor affecting
wear resistance. In general, the higher the hardness of the punch
pin, the smaller the wear and the better the wear resistance. In
addition, the wear resistance is also related to the type,
quantity, shape, size and distribution of carbides in the material.
The hard alloy punching pins produced by our company have been
widely used in industrial production and have received wide
recognition. Our hard alloy punching pins have a lot of advantages,
such as high hardness, high strength and good wear resistance.
Our company provides customized hard alloy punching pins according
to the customer's drawing requirements, and provides the actual
physical parameters as follows:
1. CO content: 10% ~ 12%
2. Density (g/cm³): 14.0 ~ 14.5
3. Hardness: 89 ~ 92.0 HRA
4. Grain size: 0.6 ~ 1.2 um
5. Bending strength: 4000MPa
6. Modulus of elasticity (GPa): 490.
7. Thermal expansion coefficient 10-6/0C: 5.4.
8. Tungsten steel punch size specifications are customized
according to the drawings.
Carbide punching pin is a part of cemented carbide mold, also
called hard alloy punching pin or carbide punching pin. It is
mainly used for punching hardware parts or electronic parts. Of
course, other non-metal parts can also be punched out, even belt
holes, plastic holes, etc. can be punched. Because of its
characteristics of acid-resistant, rust-free and long service life,
it has wide application. The pharmaceutical industry has selected
the punch for stamping tablets. The punches and punching pins used
for precision molds require good consistency and coherence, so that
the manufactured products can meet dimensional accuracy. Especially
for the mass production of precision tungsten steel punch, the
consistency control must be controlled from the blank material
production to the precession processing. Each processing procedure
must be strictly controlled! Our technical staff strictly controls
every step of the finishing process to ensure that each punching
punch is qualified.