Steel ball used in precision bearing industrial and living fields has a long history and using range is very wide, also can say the operation is also inseparable from the steel ball bearing, ball although small, but using bearing and life will directly affect the bearing of efficiency, its production process flow and installation will directly affect the quality of bearing steel ball use.

 

First of all, share the detailed steps of the production process of bearing steel balls:

 

1. Raw material

 

The material of every specification and every furnace number is inspected. If it is a wire, it is also necessary to stretch the wire (drawing wire), and the wire is stretched to the required wire diameter with a wire drawing machine.

 

2. Cold heading

 

Under normal temperature condition, the raw material has plastic deformation, forming the ball blank.

 

3, light ball (Flashing)

 

At the same time, the roughness of the surface of the steel ball is improved, so that the ball is preliminarily spherical.

 

4. Heat treatment

 

The ball is loaded into the heat treatment furnace to carburize after quenching and tempering so that the ball has a certain carburizing layer and hardness, toughness and crushing load. Some manufacturers use advanced mesh belt heat treatment line, through all kinds of instruments to quench tempering time and temperature process parameters for effective control, to ensure the stability and controllability of product quality.

 

5. Strengthening (Peening)

 

A processing method in which the steel balls collide with each other by a reinforcing machine and the surface of the steel balls is plasticized and strengthened to improve the compressive stress and surface hardness of the steel balls.

 

6. Grinding (Grinding)

 

The surface quality and shape of the steel ball can be further improved by fixing the iron plate and turning the grinding wheel plate under certain pressure.

 

7. Lapping 1

 

Using two cast iron grinding plates, adding abrasive, through certain pressure and mechanical movement, to achieve the precision of the surface quality specified by the process.

 

8. Appearance/flaw detection (Check/AVKIO)

 

100% manual selection. Plus AVKIO flaw detector: photoelectric, eddy current, vibration three methods to select all kinds of defect balls, such as surface defects, superficial surface layer cracks, internal material defects.

 

9. Refinement (Laping 2)

 

The use of two cast iron precision plate, adding abrasive, under the action of a point of pressure and mechanical movement, consumption of some flow, further improve the precision and surface quality of steel ball.

 

10. Washing

 

Improve the cleaning quality and reduce the damage of the steel ball surface through the spiral cleaning machine and the lifting type of the turnover box, and constantly filter the cleaning fluid circulation, to ensure the cleanliness of the steel ball.

 

11. Final check of finished products

 

Final inspection of each batch of steel balls according to the requirements of the process, such as roundness, hardness, metallographic, stress, etc., refer to the inspection reference book for details.

 

12, rust prevention, packaging (Oil, Pack)

 

Use anti-rust oil, spray anti-rust and pack according to customer's packaging requirements.

 

I see. How is the bearing steel ball produced? Do you know how the bearing steel ball is loaded? In the bearing industry, this process of placing the ball between the inner and outer rings is called "assembly" or "fitting". The process is as follows:

 

1, prepare the inner and outer ring: put the inner and outer ring of the bearing on the plasticine, like the picture to put the inner ring on the side, slightly press in.

 

2. Put the steel ball into the gap between the inner ring and the outer ring.

 

3. Divide the ball by evenly separating the steel ball with a ball distributor with small claws.

 

4. Place the cage and rivet the two cages.

 

Note that in the process of ball distribution, we must pay attention to some matters, otherwise the bearing steel ball is not installed properly.

 

1, the corresponding position of the steel ball should be in the groove of the outer ring, and the groove of the inner ring (press the inner and outer ring into the plasticine, or pull out the point, can be adjusted to the just right position).

 

2. Then move the inner ring to the direction of the steel ball to ensure that the steel ball is stuck in the groove.

 

3. Use tweezers or other rod like objects to pass through the inner ring, and push against the steel ball in the direction of the steel ball.

 

4. Remove the bearing from the plasticine immediately.

 

5. Pay attention to the direction of the steel ball when holding it by hand, or it will easily fall apart.

 

6, then use a screwdriver to position the steel ball.

 

7. It'll be ready in no time.

 

Now ordinary bearings, cages (that is, fixed bearing rings) are usually put into enough bearing balls before the cage is not yet, so the ball is installed in the ball, then the cage can be installed, because there is no cage, the ball can be rolled to the side, so that the inner ring can be taken out.

 

As for no cage of deep groove ball bearings, usually on the inside is, there is a small groove, installs the ball is from here, after installs, mostly bearing USES a and metal bonding in the grooves perfectly, of course, also some glue, in fact, the ball had no way out, unless there is a external force, and if the bonded to a metal in it, The ball is even less likely to come out.