Punching needles are also known as sharp mouth punches, round punches, punch heads, etc. Knife die hardware accessories, punching needles, leather punching special punches, leather punching special molds, edge cutting holes, double-sided punching, digital punching special punches, EVA punching, there are so many classifications. How is the punching needle processed? Let's take a look at the general manufacturing process of punching needles with the editor below.

1. Car breakage

After passing the laboratory test, the raw materials are drawn into the required diameter scale by a wire drawing machine, and then cut into fixed length rod-shaped punch blanks.

2. Knife edges at both ends of the car

Before heat treatment, the needle blank material is first straightened on a straightening platform using a dial gauge. Then, it is placed in a high-frequency electric furnace or salt bath furnace and heated to 800-1300 degrees Celsius for 2-5 minutes. After oil cold quenching and precision quenching heat treatment, the needle tip hardness can reach Hv590-800. Finally, low-temperature tempering treatment is carried out.

3. Wash two slanted holes

Clamp the punching needle onto the spring clamp of the machine tool, and perform grinding and forming processing according to the viewpoint and scale requirements of various pointed bases of the punching needle.

4. Grinding the wool thread

Polishing is the process of cleaning the surface of oil stains, rust, and other contaminants to achieve a clean finish.

5. Heat treatment

Inspect according to the required target index, and ship qualified products with rust proof oil in tight bags.

Article source: Jiangmen Leather Punching Machinehttp://www.hslichuang.com/