Surface Condition of Tungsten Ball Pen and the Effect

It is well known that tungsten ball pen has greater superiority than stainless steel ball pen in the use of ballpoint pen. Because of its high hardness, corrosion resistance, wear resistance, and low surface roughness, the surface is uniformly filled with small micro-pores and other characteristics, when writing these characteristics are relatively stable, so that the ball on the ball seat body reduces the wear and tear has the advantages of uniform ink, clear delineation, fluent writing, no slippage and no oil and so on. So what is the surface condition of the tungsten ball pen and the effect? Let's take a look.

The following is a list of contents:

l The surface condition of the tungsten ball pen

l The effect of the sintering process on the surface condition of the tungsten ball pen

l The effect of the grinding process on the surface condition of the tungsten ball pen

The surface condition of the tungsten ball pen

To achieve good writing requirements, any type of tungsten ball pen must have low surface roughness and uniform fine microporosity, and these characteristics are relatively stable throughout the writing process, maintaining a long time and minimal changes, and this can effectively reduce the wear between the ball and the ball holder when writing, and the ink is slowly and continuously brought out through the capillary action of the microporosity while the excess ink is brought back to the ball holder body to ensure the writing This ensures stable and excellent performance.

The reason why the surface state of the tungsten sphere has the above characteristics is due to the organization and performance of the tungsten alloy ball itself and the processing technology that is compatible with it. No matter what kind of grinding process is used, the bonded phase on the grinding surface of the ball is worn before the tungsten phase, and it is concave and forms micro-pores.

The effect of the sintering process on the surface condition of the tungsten ball pen

The sintering process is a very important part of the production process of tungsten ball pens. Usually, sintering can be divided into two stages: dewaxing and sintering, and the forming agent paraffin wax must be added in the previous process of tungsten sphere production due to the need for forming spheres.

Paraffin wax is a kind of saturated hydrocarbon substance, which has a certain melting, boiling, and cracking temperature. When dewaxing under gas protection, the time and temperature control should be suitable, so that the wax inside the sphere melts into a liquid and has enough time to be discharged smoothly without residue, if the dewaxing is not complete, the wax will flow out too quickly or cause the wax to boil, and the sintered beads will produce "skinning" and "bulging", ''delamination" and other phenomena, the above situation will cause the internal organization of the tungsten ball pen to loose, poor densification. When the dewaxed beads are sintered at high temperature, at a certain sintering temperature, the bonding metal melts and infiltrates, fills, moistens, and surrounds the tungsten particles, so that the pores of the whole bead are reduced, the sphere shrinks and densifies, and the bead becomes a ball with certain organization and performance by cooling.

The effect of the grinding process on the surface condition of the tungsten ball pen

The sintered ball beads are processed by mechanical grinding to achieve certain roundness, size, surface condition, and other appearance requirements. In the grinding stage, the movement of the ball beads in the grinding disc is the synthesis of self-rotation and revolution, and the tungsten ball pens are mainly subjected to the pressure and friction of the upper and lower grinding discs and the friction of the abrasive, and gradually ground to the specified requirements.

To ensure the grinding quality, the tungsten ball pens are ground from the sintered beads to the finished products in stages, namely, phase grinding, fine grinding, and finished grinding. The grinding in the former stage is fully prepared for the latter stage. The requirements of grinding discs are different in different grinding stages, i.e. the depth of grooves, angle of grooves, number of grooves, and distance of grooves of grinding discs vary according to the diameter of balls, to ensure the smooth grinding and achieve the quality requirements. The choice of abrasive in grinding plays a pivotal role in the grinding of tungsten ball pen, which directly affects the grinding speed and the surface condition of the balls.

Above is the information about the surface condition of the tungsten ball pen and the effect. If you are interested in tungsten spheres, tungsten ball pens, or other cemented carbides, you can contact us, our company focuses on the development of cemented carbide, mining machinery, engineering tools, auto parts, new energy, leisure sports equipment, and other industries. Our website is https://www.7jinxin.com/. We are very much looking forward to your arrival and hope to cooperate with you.