Zirconium Silicate Ceramic Beads for Surface Cleaning Applications (Zircon) by Shengli Abrasives

Zirconium Silicate Ceramic Beads

Zirconium Silicate Ceramic Beads are manufactured by electric/thermal fusion of oxides. The internal structure is made up of a crystalline ceramic phase bonded by an amorphous silica phase resulting in high impact properties coupled with good hardness.

Application of Zirconium Silicate Ceramic Beads

Zirconium Silicate Ceramic Beads are used for surface cleaning of rubber and plastic molds, castings, boiler and heat exchanger parts, shot peening of components and also in nuclear reactor components like exchanger tube plates prior to welding. Zirconium Silicate Ceramic Beads are also used for deburring locks and lock components and surface preparation of stainless steel parts used in the food industries.

Zirconium silicate ceramic beads

Figure 1. Zirconium silicate ceramic beads

Zirconium Silicate Ceramic Bead Performance and Usage Guidelines

Typical examples of zirconium silicate ceramic beads include the following:

  1. It maybe used in airless and compressed air blasting equipment, both wet and dry.

  2. When used in airless blasting equipment, sufficient media coverage of the blades must be maintained to avoid excessive media breakdown rates.

  3. Ensure blasting equipment contains a good operating mix if removal of millscale / discolouration is required.

Table 1. Zirconium silicate ceramic bead performance and usage guidelines

For blasting

B20

B30

B40

B60

B120

B125

B205

For shot peening

Z850

Z600

Z425

Z300

Z210

Z150

Z100

Breakdown Rate

Approx 15% after 100 cycles

Properties of Zirconium Silicate Ceramic Beads

Table 2. Properties of zirconium silicate ceramic beads

Shape

Smooth Spherical Beads

Typical Crystallographic Analysis

Hardness (HRC)

65

Zirconia

67%

True Relative Density

3.85

Glassy Silica Phase

33%

Bead Relative Density

3.76

Typical Chemical Composition

Bulk Density (kg/m3)

2300

ZrO2

67%

Size Standard

Z-AMS 2431/7

SiO2

30%

B-NF L 06.824

Others

3%

Zirconium Silicate Ceramic Beads Grit Sizes

Table 3. Zirconium silicate ceramic bead grit sizes

Grit size

B20

B30

B40

B60

B120

B125

B205

Microns

600-850

425-600

250-425

125-250

70-125

0-125

0-63

Inch (0.001")

.023-.033

.016-.023

.01-.016

.005-.01

.003-.005

0-.005

0-.002

Grit size

Z850

Z600

Z425

Z300

Z210

Z150

Z100

Microns

850-1180

600-850

425-600

300-425

210-300

150-210

100-150

Inch (0.001")

.033-.04

.023-.033

.016-.023

.01-.016

.008-.01

.006-.008

.004-.006

Source: Shengli Abrasives

For more information on this source please visit Shengli Abrasives

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