Product Introduction

How a Ball is Made

Heading: In the first step, heading machines cut wire into short lengths and form it into spherical shapes between dies.

Deflashing: The flash line, a ridge left by the forming dies, is removed as balls roll between heavy, cast iron plates. Soft Grinding: Similar to deflashing, except that a grinding stone is used to improve precision.

Heat-treating: Carbon steel balls are next carburized and hardened. Heat treatment imparts the desired hardness and case depth.

Descaling: This step removes the residues and by-products from the heat-treating process. Hard Grinding: Slow, meticulous grinding assures proper sizing and sphericity, with tolerances as close as ±.0001″.

Lapping: Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade 10 – 48. Finishing: Proprietary chemical and mechanical processes give the balls their final micro-smoothed finish, for increased wear resistance and product longevity.

Main Parameter

STAINLESS

STEEL

Ball

MARTENSITIC

US

Chemical Composition

AISINO.

Carbon

Silicon

Mangan-ese

Phos-phorous

Sulfur

Nickel

Chrome

Molyb-denum

AISI

0.09

1

1

0.04

0.03

11.5

410

0.15

Max

Max

Max

Max

13.5

AISI

0.26

10

1

0.04

0.03

12

420B

0.35

Max

Max

Max

Max

14

AISI

0.28

0.8

1

0.04

0.03

12

420

0.36

Max

Max

Max

Max

14

AISI

0.04

1

1

0.04

0.03

1

12

420C

0.5

Max

Max

Max

Max

Max

14

AISI

0.75

1

1

0.04

0.03

0.6

16

0.75

440B

0.95

Max

Max

Max

Max

Max

18

Max

AISI

0.95

1

1

0.04

0.03

0.6

16

0.4

440C

1.2

Max

Max

Max

Max

Max

18

0.8

AUSYENITIC

AISI

0.07

1

2

0.045

0.03

8

17

304

Max

Max

Max

Max

Max

10.5

19

AISI

0.03

1

2

0.045

0.03

8

18

304L

Max

Max

Max

Max

Max

12

20

AISI

0.07

1

2

0.045

0.03

10

16.5

2

316

Max

Max

Max

Max

Max

14

18.5

2.5

AISI

0.03

1

2

0.045

0.03

12

16.5

2

316L

Max

Max

Max

Max

Max

15

18.5

3

AISI

0.12

1

1

0.045

0.03

0.6

16

430

Max

Max

Max

Max

Max

Max

18


Figure Photos

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