How to produce gel pens and how to make steel balls with tips?

The production of steel balls for gel pens is a patented process. The steel wire is punched and cut or directly fed, and then directly extruded or cut into small particles by a special extruder. When cutting or extruding, it is not a usable sphere and needs to be rolled at high speed in the machine. At this time, the cut fine materials rub against each other at high speed, which requires spray cooling and lubrication to keep the spherical shape uniform.

After high-speed throwing and rolling, it is shaped into a usable small ball. At present, water mist or aerosol is used to manufacture microspheres: molten steel is sprayed on a high place, so that the produced stainless steel beads are naturally cooled in the air during free fall. In this process, spraying water mist into the air at the same time will improve the cooling speed of stainless steel beads.

Extended data:

Types of gel pen tips

1, bullet type

In the manufacturing process, we cut an original rod into a complete nib by metal cutting. Bullet type is suitable for making thicker pens, which are mostly 0.5MM in the market and the thickest can reach 1.2.

2. Needle type

The key difference with bullet-shaped pen is that it is made by non-cutting method. Before it is processed into a pen tip, it is a complete thin tube, and three concave points are punched out at the front end of the thin tube from three directions with precision instruments to form the bowl seat of the ball; The thin tube at the back forms a triangular oil groove. The ink flows out through the oil tank, and then the ink is brought out by the rolling of the ball to complete the writing process.

Half needle tube

3, the half needle tube is between the bullet and the needle tube, and the appearance is more beautiful. The nib can be as thin as a needle tube and the tail can be as big as a bullet. The semi-needle tube type can be used as a thinner pen tip, such as 0.48, 0.35 and so on.

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