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Product Description
High-Performance Wear-Resistant Blow Bars for Demanding Impact Crushers
Wear-resistant blow bars are crucial moving elements in impact and hammer crushers. At Shandong Jiujiu Machinery, we engineer these rotating hammers to act as the primary kinetic force in your crushing chamber, turning massive boulders into precisely sized aggregates. They play a vital role in directly imparting high-speed impacts to break down materials such as limestone, coal gangue, and construction waste. Because they are subjected to continuous high-velocity collisions, their performance is a determining factor for crushing efficiency and the continuous operation of the equipment, thus being essential for the mining and construction industries.
Advanced Metallurgy: Hardness and Fracture Resistance
As essential crusher spare parts, their long-lasting nature depends on high-quality wear-resistant materials. The primary operational challenge in a horizontal shaft impactor (HSI) is finding the perfect pivot between brittle hardness and impact toughness. Standard metals simply shear or crack under these extreme forces.
Depending on your specific quarry geology, we customize the alloy chemistry to maximize service intervals:
High-Manganese Steel (Mn13 to Mn22): Commonly employed in medium-impact situations, capitalizing on “work hardening” to enhance surface hardness during usage. It starts at a highly ductile HB 180–220 and jumps to over HRC 50 at the working face as the material impacts it.
High-Chromium Iron (Cr15 to Cr27): For operations dealing with highly abrasive materials like granite or basalt. This metal yields an immediate, consistent hardness of HRC 58–63, ignoring the "sandblasting" effect of fine, sharp particles.
Precision Manufacturing and Operational Stability
When used in conjunction with impact crusher liners, wear-resistant blow bars guarantee stable operation, achieving a balance between cost-effectiveness and performance to meet various production requirements. A common cause of rotor damage in mobile crushing plants is a blow bar that fits loosely or contains internal air pockets. To eliminate this risk, we utilize advanced Vacuum-Sealed Molding. This results in a completely dense internal matrix and a precisely machined locking interface, ensuring the bar locks perfectly into the rotor without localized stress points.
Plant Operator FAQ
Q: My current blow bars are rounding off too quickly. What should I change?
A: If you are processing highly abrasive rock, switching from standard manganese to a High-Chrome or Ceramic-Inlay alloy will maintain the sharp striking edge much longer, reducing your recirculating load.
Q: Can these bars be flipped to extend their service life?
A: Yes. Our bars feature a symmetrical, reversible design. Once the top edge reaches its wear limit, you can flip the bar in the rotor to utilize the fresh bottom edge, effectively doubling its wear life.
Q: Do you produce custom shapes for specialized recycling crushers?
A: Absolutely. We can cast standard, I-shape, and S-shape profiles tailored to your specific rotor design and material feed.
Chemical composition % of high manganese steel
Chemical composition % of high chromium cast iron
This product is a customized product and is produced according to customer drawings or samples.
Casting Process
Casting Process
Casting Process
Casting Process
Casting Process
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Delivery site
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Certifications
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Keywords
wear-resistant blow bars
wear-resistant blow bars
Contact Us
Telephone:+86-13792621099
Weifang Binhai New Area Sino-foreign Cooperation Industrial Park, about 260 meters west of the intersection of Hai 'an Road and Zhenhai Street
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CONTACT US
Telephone：+86-13792621099
Weifang Binhai New Area Sino-foreign Cooperation Industrial Park, about 260 meters west of the intersection of Hai 'an Road and Zhenhai Street
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