In stone crushing plants, blow bars (palettes) play a critical role in machine performance, lifespan, and operational costs. The material composition of the blow bar determines its efficiency under different working conditions. Among the most widely used types are manganese casting blow bars and chromium casting blow bars.

Manganese Casting Blow Bars

  • Material Property: Made of high manganese steel, highly resistant to impact.

  • Advantages:

    • Excellent toughness against heavy impacts and crushing forces.

    • Can operate for long periods without severe wear.

    • Ideal for crushing large and hard stones.

  • Disadvantages:

    • Less resistant to extremely abrasive materials compared to chromium.

    • Best for high-impact jobs rather than constant abrasion.

Chromium Casting Blow Bars

  • Material Property: Contains a high percentage of chromium, providing superior wear resistance.

  • Advantages:

    • Outstanding durability against abrasive materials.

    • Longer lifespan reduces maintenance and replacement costs.

    • Preferred for crushing abrasive stones like quartz and basalt.

  • Disadvantages:

    • More brittle compared to manganese; higher risk of breakage under sudden impacts.

    • Less flexible under shock loads.

Conclusion

  • Manganese casting blow bars are ideal for high-impact applications.

  • Chromium casting blow bars excel in high-abrasion environments.
    The right choice depends on the material being processed.