Chrome Steel Balls
Chrome steel ball, or high carbon high chrome steel balls, is actually an alloy steel ball which owes its enhanced properties to the presence of larger proportions of special alloying elements such as chromium, manganese and silicon than are ordinarily present in carbon steel.
|Technocon Engineers offers a wide range of forged chrome steel balls.|
■ Steel Material: Chrome alloy steel; AISI 52100, EN-31,SUJ-2, 100Cr6, 100C6, DIN 5401. Details...
■ Sizes (Diameters): 2 mm to 12.7 mm and
5/64" to 1/2" diameter. Details...
■ Grades (Tolerances): AFBMA100 to 2000.
Fine grade to grinding media grade. Details...
■ Production sequence of chromesteel ball.
■ Advantages of Technocon's chrome alloy steelballs.
|Applications of chrome steel balls.|
Some common uses of chrome steel balls are as:
Vibratory polishing, burnishing steel media;Details..
Ball bearings in bicycles; Details...
Ball mill media, grinding steel balls and
Grinding media for cocoa, chocolate liquor; Details...
Agitators in paint spray cans, In plating bath of zinc and lead, Casters,
Drawer Slides, Door Locks. Details...
High Carbon High Chrome Balls,
Chrome Steel, Bearing Steel Balls.
AISI 52100, EN 31, SUJ 2, 100Cr6, 100C6.
DIN 5401, Class II to VI.
|Properties of Chrome Steel Balls|
● Corrosion Resistance:
Stainless Steel > Chrome Alloy Steel > High Carbon Steel.
● Hardenability: The above stainless steel are hardenable by heat treatment upto the core. These are generally through hardened upto 58-63 HRC (Rockwell C).
● Passivation: Chrome steel balls are prone to atmospheric oxidation and rusting in corrosive or humid environment.
|Chrome Steel Balls Vs|
Carbon Steel Balls
For better performance and life in most of the above applications chrome steel balls instead of ordinary carbon steel ball (round / spherical) are preferred.
These steel balls have better corrosion resistance, hardenability and toughness.
The chrome alloy steel balls can be thorough hardened (upto the core) to 58-63 HRc (Rockwell C) instead of just case hardened or carburized.
| Material Composition of Chrome Alloy Hardened Steel Ball|
(High Carbon High Chrome Steel, Bearing Steel - Thorough Hardened)
|EN 31||0.90-1.10||1.10 max||0.10-0.35||0.05 max||0.05 max||Nil||1.00-1.50||58-63 HRc|
|0.95-1.10||0.20-0.50||0.35 max||0.025 max||0.025 max||Nil||1.30-1.60||58-63 HRc|
| Effects of Alloying Elements in Chrome Steel Balls|
Alloying Element: Any metallic element added during the making of steel for the purpose of increasing corrosion resistance, hardness or strength.
The metals used most commonly as alloying elements in chrome steel include chromium, manganese and silicon.
The presence of carbon in iron is necessary to make steel. Carbon is essential to the formation of cementite (as well as other carbides), and to the formation of pearlite, spheroidite, bainite, and iron-carbon martensite. The hardness of steel (or more accurately, the hardenability) is increased by the addition of more carbon, up to about 0.65 percent. Wear resistance can be increased in amounts up to about 1.5 percent. Beyond this amount, increases of carbon reduce toughness and increase brittleness.
Manganese slightly increases the strength of ferrite, and also increases the hardness penetration of steel.
Chromium (Cr) has a tendency to increase hardness penetration. Chromium can also increase the toughness and wear resistance of steel. Probably one of the most well known effects of chromium on steel is the tendency to resist staining and corrosion. Steels with 12% or more chromium are referred to as stainless steels.
Silicon is used as a deoxidizer in steel. It slightly increases the strength of ferrite, and when used in conjunction with other alloys can help increase the toughness and hardness penetration of steel.
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