High speed-tungsten carbide pins for extrusion-piercing-knockout of forming header machinery toolings from China manufacturer

FMT China supplies high quality pins options for a screw making die:Ejection pins / Kick out pins,Extrusion pins,Piercing pins,forging pins,forming pins,heading pins.

1. Ejection pins, also called Kick out pins: These pins are used to eject the finished screws from the die, helping to prevent jamming or damage.

2. Extrusion pins: also known as forming pins or mandrels, are used in the screw making process to form the desired shape of the screw thread.

Here is a brief overview of how extrusion pins are used in screw manufacturing:

1). Material Preparation: The raw material, typically metal wire, is cleaned and prepared for the extrusion process.

2). Extrusion: The prepared wire is fed into a machine called an extruder. The extruder consists of a rotating screw and barrel that heats and compresses the material, forcing it through a die.

3). Die Design: The die is a specially designed tool with a hole through which the heated material is extruded. The die shape determines the final shape and size of the screw thread.

4). Extrusion Pin Insertion: Before the molten material passes through the die, an extrusion pin is inserted into the center of the die hole. The extrusion pin is designed to create the internal thread shape of the screw.

5). Thread Formation: As the molten material passes through the die, it surrounds the extrusion pin, taking on its shape. The pin acts as a mandrel, or template, for the molten material, forming the internal thread of the screw.

6). Cooling and Hardening: After the extrusion process, the screw is cooled to solidify the material and harden the thread. This ensures that the screw retains its shape and strength.

7). Pin Removal: Once the screw has cooled and hardened, the extrusion pin is removed from the center of the screw. This leaves behind the desired internal thread shape.

8). Finishing Operations: The extruded screw is subjected to additional machining and finishing operations to create the external thread, head, and other features.

Extrusion pins are essential in the screw making process as they determine the internal thread shape. They need to be accurately designed and manufactured to ensure the desired thread quality and dimensions of the final screw product.

3. Piercing pins:Piercing pins are typically used in the manufacturing process of screw making to create the initial hole or indentation before the rest of the screw is formed. These pins are often made from hardened steel to withstand the force and pressure applied during the piercing operation.

Here are a few commonly used piercing pins for screw making:

1). Solid piercing pins: These pins are typically made from solid steel rods with a sharp, pointed tip. They are used to create the initial hole or indentation in the screw blank.

2). Tapered piercing pins: These pins are tapered to a point, allowing for more precise piercing and minimizing damage to the screw blank. The tapering allows for gradual penetration into the material.

3). Hollow piercing pins: These pins have a hollow interior with a sharp tip. The hollow design allows for better chip evacuation during the piercing process, improving the efficiency and effectiveness of the operation.

4). Carbide-tipped piercing pins: These pins are made with a steel body but feature a carbide tip for increased durability and longevity. The carbide tip provides extra hardness and resistance to wear, making them suitable for piercing harder materials or high-volume production environments.

5). Customized piercing pins: Depending on the specific requirements of the screw manufacturing process, customized piercing pins can be designed and manufactured. These may include different shapes, sizes, and materials, ensuring they meet the specific needs of the screw-making operation.

It's important to note that the selection of piercing pins will depend on various factors including the type of screw being produced, the materials being used, and the specific manufacturing requirements.

• Punch pins material: High speed steel / Carbide

• Quick delivery time

• Used in Sakamura,Hatebur,Asahi Okuma, Asahi Sunac, Carlo Salvi, Hartford, Jern Yao, National, Nedschroef, Sacma, Saspi, Waterbury machines in China plant.

• Please inform which brand machine in your plant when send a drawing for a quote.