The Cold Heading Die, also called cold forming die, is a specialized die used in the process of cold heading, where a metal blank is formed into a part without heating. It is designed to form the head of a bolt, screw or other fasteners. The main die is the core component of the cold heading die, and it works together with the punch and the other components to produce the desired shape of the part.
We are a professional cold forging die manufacturers,various types of cold heading machines are available, cold heading die for screw moulds is general application,but for fastener production, it is common to find machines with one die two blow, up to five die six blow, and even more. The use of multi-die headers enables the production of more intricate parts in a single process, overcoming the limitations posed by the diameter ratio reductions.
In summary, the cold heading die and cold forging die is an essential tool for the production of high-quality fasteners. With its high-quality materials, precision machining, and customizable features, it can meet the demanding requirements of various industries and applications.
Cold heading dies include various types such as straight hole dies, triangular dies, extrusion dies, trimming dies, and socket dies. The method of cold pressing, shrink fitting, or taper fitting is chosen for the carbide inserts based on the specific application or customer requirements. Similarly, the carbide heading dies come in different variations such as plain hole, pointing, extrusion, trap extrusion, hexagonal, hex extrusion, flat extrusion, and trilobular to cater to the production of various types of fasteners, screws, and bolts.
Molds and dies for cold heading machine,JERN YAO, CHUN ZU, National, Hyodong, Nedschroef, Sacma, Hatebur and other heading dies models.
The Cold Heading Die is widely used in the production of bolts, screws, rivets, and other fasteners. It is suitable for use in high-volume production environments such as automotive, construction, and electronics industries.
Material for Core of Cold Heading Dies:
Material for Casing of Cold Heading Dies:
Benefit
- Increased efficiency: With excellent wear resistance, tungsten carbide cold heading dies have a longer lifespan, reducing downtime and increasing production efficiency.
- Cost savings: Tungsten carbide cold heading dies can produce a large number of screws with consistent quality, reducing scrap and material waste and lowering production costs.
- Versatility: Tungsten carbide cold heading dies can be customized to produce screws of various sizes, shapes, and thread designs, making them suitable for a wide range of applications.
- 1-Dies-2-Blow Cut-off Fingerless Heading Machine
- 2-Dies-3-Blow Precision Micro Cold Forged Bolt Former (round shears)
- 2-Dies-4-Blow Multi-Stroke Heading Machine
- 4-Dies-4-Blow Precision Micro Cold Forged Bolt Former
- 6-Dies-6-Blow Mini Cassette Bolt Former
- Open mold machine
The production cost of cold heading dies for internal hex bolts and external hex bolts may differ depending on various factors, such as:
- Design and manufacturing cost of the dies: Internal hex bolts and external hex bolts have different shapes and sizes, which require different die designs and manufacturing processes, affecting the cost. The difference lies in the head manufacturing process, as the head structures are completely different and require different dies and processes. The head manufacturing cost of internal hex bolts is higher than that of external hex bolts due to the different head structures, with the cost of external hex bolts being only half that of internal hex bolts.
- Material cost: Internal hex bolts and external hex bolts may use different materials, which may also affect the cost. For example, internal hex bolts are usually cold-headed from solid bar stock, while external hex bolts are cut and machined from hexagonal rod stock.
- Processing cost: The production process of bolts using cold heading dies may involve multiple processing steps, such as cold heading, cutting, forming, cleaning, etc., and the cost of these steps may also differ depending on the type and quantity of bolts.
Therefore, when determining the production cost of internal hex bolts and external hex bolts, it is necessary to consider the above factors.
Cold heading, also known as cold forming, is a highly efficient method of manufacturing metal parts with net or near-net shapes. The process involves using a slug, which is cut from a continuous wire coil, and a cold heading machine that employs a series of hammers and dies to form the part. This process generates little to no waste, resulting in significant material cost savings. Additionally, the volume of the initial slug is similar to that of the finished part, as the material is shaped into the die rather than being cut from a blank. The cold heading process enhances the grain flow of the material and produces a stronger part with smooth, continuous surfaces.
Compared to metal-cutting operations, cold heading is faster and can produce large quantities of parts with tolerances as close as +/- .002″ without requiring secondary operations. Cold heading dies, which are typically made of tool steel or tungsten carbide, are crucial components of the process. Precision-engineered to create the desired shape and size of the finished part, these dies are custom-made for specific applications and designed to withstand the repeated blows of the cold heading process.
The cold heading process is used to manufacture a range of small to medium-sized metal parts, including bolts, screws, nuts, rivets, and pins. This cost-effective and efficient method of manufacturing requires minimal material waste and can produce large quantities of parts quickly and accurately. Overall, cold heading dies play an essential role in enabling the production of high-quality, precision-engineered metal parts for a diverse range of applications.
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