Grinding media steel balls, hardened steel media, 1 to12 mm.

Steel grinding media ball, beads, shots, ballcones and cylinders are manufactured by
Technocon Engineers, India in various alloy steel compositions, shapes and sizes for diverse grinding and milling applications.

This steel grinding media for ball mills, pulverizers and attritors is cold forged and ground.
The hardened steel balls (shots, beads) are available in different hardness, as required, in both high carbon steel and chrome alloy steel. For specific applications, stainless steel media and balls are also used for grinding and milling.

Grinding Media Steel Balls

Steel forged grinding media, hardened, is very suitable wherever high wear and chemical resistance is required. Also where generation of heat is crucial to the milling and dispersion process.

The steel shots, balls and beads - ball mill media - are preferred for contamination free and speedy (dry / wet) milling, grinding of solids, liquids dispersion and fine particle size reduction, homogenization of fillers and raw materials, attrition and pulverizing applications in ball, vibro, dyno, pearl, bead, pebble, attritor and small-media mills, vertical or horizontal.

Alloy steel media is particularly suitable, because of its high relative density and hardness, for crushing and mixing heavy and hard materials. Also where high pressure and impact grinding or crushing methods are employed. The forged steel media balls also find advantage in reducing particle size and fine dispersion of highly viscous fluids.

Stainless steel balls and other shapes are used for grinding applications where absolutely no iron contamination is permissible, specially in food products.

Steel Grinding Media in Ball Mill

Application segments for steel grinding media

► Grinding of solids and fluids.
► Liquids dispersion.
► Fine particle size reduction.
► Homogenization of fillers and raw materials.
► Attrition and pulverizing applications in ball,
vibro, dyno, pearl, bead, pebble, attritor and
small-media mills, vertical or horizontal.

Paints, varnish, lacquers, glazes, pigments, enamels, polymers, colours, elastomers, dyestuff.
Offset printing inks, toners.
Metal powders and oxides, flake powders, brass, copper, iron, ferrites, aluminum, zinc, minerals, ores.
Chemicals, talc, drugs, pharmaceuticals, cosmetics.
Paper and electronic coatings, magnetic tape coatings, carbon black and carbon paper coatings.
Agricultural flowables, confectionery, food products.
Ceramics.
Gas, oil well drilling.
Roasted cocoa nibs, chocolate liquor.

BALL MILL USED FOR GRINDING, MILLING, PULVERIZING AND DISPERSION.

Ball Mill used for grinding, milling, dispersion

Steel grinding media finds advantage where:

High wear and chemical resistance is required.
Generation of heat is crucial to the milling and dispersion process.
Contamination free and speedy (dry / wet) milling is important.
Crushing and mixing heavy and hard materials is undertaken.
High pressure and impact grinding or crushing methods are employed.
Reducing particle size and fine dispersion of highly viscous fluids is required.

Steel balls for chocolate grinding (stainless, inox, hardened chrome)

In the case of chocolates, the optimal size for cocoa particles is approximately 12 microns. Your tongue has the ability to feel texture. If the particles are too big, say 20 to 75 microns, then your tongue would sense an unpleasant roughness. If the particles are too small, say 1 to 9 microns, the cocoa particles would bind up more of the expensive cocoa butter. This would add cost to the process for more butter would have to be added to keep the product fluid.

The bead mills used for cocoa mass are vertical bead mills, using 5 to 6 mm or 1/4" and 3/16" diameter steel balls, beads or shots. Other sizes used vary from 8 mm to 11 mm or 5/16" to 7/16". Chocolate manufacturers use stainless steel (inox) media where absolutely no iron contamination is permissible and otherwise hardened chrome alloy steel balls.

Chocolate is very viscous. Because of the high density, no contamination, reasonable cost and lack of wear of steel media, the chocolate companies essentially use passivated steel balls as grinding media for chocolate paste in ball mills.

Material of alloy steel grinding media

► Chrome or chromium alloy steel.
AISI 52100 / SUJ 2 / En 31.

► High carbon steel.
AISI 1085 / C85.

Thorough hardened to 58 - 63 HRc,
Rockwell C.
Custom hardness also possible.

► Stainless steel or Inox, AISI 304 / 316 / 302 is used where absolutely no iron contamination is permissible. These austenitic steel are unhardenable by heat treatment. Some work hardening and strengthening takes place during cold forging process.

Stainless steel have excellent resistance to corrosion. The stainless steel grinding media is thoroughly passivated to clean it of any carryover iron particles.

A material composition chart for different stainless, chrome alloy and carbon steels is available at
www.steelmedia.com/steel-composition.htm

Shapes and sizes of steel media available for grinding, milling and dispersion

	Spherical ball also referred to as shot or bead. These are most widely used. For more information click here. Sizes: 1 mm to 12.5 mm and 3/64 inch to 1/2 inch diameter. Details...
	Eclipse ball To reduce grinding costs, eclipse - steel ball with slight flattening at the poles - can be used. Since these are not spherical or perfectly round, the price is substantially lower. For more information click here. Sizes: 3 mm to 12 mm and 1/8 inch to 1/2 inch diameter. Details...
	Cylinders / Diagonals Sizes: 1 mm to 3 mm diameters and lengths from 6 mm to 10 mm. In inches, 3/64" to 1/8" diameters and lengths from 1/4 inch to 3/8 inch. Details...
	Ballcones / Satellites Sizes: 3 mm to 6 mm and 1/8" to 1/4" ball diameter. Details...

Surface finish and tolerance of steel grinding balls and shots

Ground and Lapped
For spherical ball, tolerance and surface finish as per AFBMA Grade 1000 is acceptable.
The diameter tolerance for Grade 1000 is;
Ball Diameter Tolerance (Ovality Per Ball): 0.001" or 0.0254 mm or 25.40 microns.
Basic Diameter Tolerance (Ball To Ball Variation): +/- 0.005" or +/- 0.1270 mm or +/- 127 microns.

Ground and Polished
This is acceptable where high quality is not required.
Basic Diameter Tolerance (Ball To Ball Variation): +/- 0.01" or +/- 0.25 mm or +/- 250 microns.

Technocon's grinding steel media is well accepted in the international market for
its very competitive price, excellent quality and timely delivery.

Technocon Engineers, India Request a price quote E-Mail: info@steelmedia.com	Go Top
	www.steelmedia.com

Grinding Media Balls - Alloy Steel Chrome Steel, Stainless Steel and High Carbon

Grinding Media Balls - Alloy Steel
Chrome Steel, Stainless Steel and High Carbon