To make one ball, wire needs to be cut at required length
and each piece compressed
into sphere/ball shape by pair of dies.
Shape of molded ball
with the band still attached.
By using two grooved boards,
a number of balls that have been formed are processed one by one.
The ball is ground while rotating and pressed to remove the ‘belt’.
Then, be a ball of a certain size.
Balls are quenched and tempered to give them sufficient strength and durability.diinginkan
With 2 grooved boards, predetermined number of molded balls are being pressed and grinded while rotating one after another. And the balls are finished with specified size.
Processing method is the same as previous process, GRINDING process. Each process we change the material of board. And when the ball finished with specified size, at the same time the surface roughness and size accuracy also being improved to get specular finish ball.
Shape of ball after first lapping process.
Shape of ball after second lapping process.
We perform automatic visual inspection by machine to decide quality of products.
Balls that passed visual inspection are treated with anti-corrosive oil and then packed in paperboard boxes.