About HSI Blow Bars
Blow bars for HSI crushers are cast from high-chromium or high-manganese steel.
Driven by the rotors of the Horizontal Shaft Impact (HSI) crushers, the blow bars rotate at high speed and strike the material, causing it to shatter through repeated impacts between the blow bars and the impact liners until the particle size is small enough to pass through the gap and be discharged.
Advantages of Impact Crusher Blow Bars By Material
High chrome blow bars are custom cast for abrasive crushing applications.
- High Wear Resistance
High-chromium blow bars are specifically designed for HSI crushers, where wear is the primary mode of failure.
Cast high-chromium blow bars feature a hardness exceeding HRC 60 and offer excellent wear resistance.
Under specific impact conditions, they exhibit slower wear rates and a longer service life when processing highly abrasive materials. - High Chrome Alloy Options for Different Applications
We support custom production across various standard materials, such as ASTM A532M, EN12513, DIN1695, and GOST 7769, including grades Cr15Mo, Cr20Mo, Cr26, Cr27, EN-GJN-HV600 (XCr27), G-X260Cr27, and ЧХ28.
This allows crusher manufacturers to make flexible material selections based on specific working conditions, without being restricted to a single material type. - Precision-Cast Custom Blow Bars
We custom-cast blow bars for HSI crushers based on drawings, samples, or specifications, developing tailored mold, casting, and heat-treatment solutions for each type of blow bar.
Our standardized production flows ensure consistent product quality, delivering reliable wear performance for crushers.
Although manganese steel blow bars are lower in price than high-chromium blow bars, they are not "low-end" products.
Under certain wear conditions, manganese steel blow bars can withstand greater impact and are less prone to chipping or cracking.
- Designed for High-Impact Crushing
Manganese steel blow bars produced from grades such as Hadfield steel (ASTM A128/A128M Grade A/B1/C, GX100Mn13/GX120Mn13/GX120Mn13Cr2, DIN 1.3401) develop a surface hardness exceeding HB 500 upon impact; the greater the impact, the higher the surface hardness becomes, while the core retains its original hardness and high toughness.
This characteristic makes them an ideal choice for demanding applications involving high-impact conditions. - High Tolerance For Foreign Objects In The Feed Material
In applications where materials often contain scrap steel, bolts, or rebar, high-manganese steel blow bars can withstand instantaneous impacts without fracturing. - Repairable Blow Bars Via Hardfacing
High-chromium cast iron blow bars cannot be repaired via hardfacing, while high-manganese steel blow bars can be hardfaced for extended service.
HSI Crusher Blow Bars By Application
We believe there is no single blow bar material that can perform at its best in every crushing application. Yet many customers are still forced to choose from standard, single-material options that may not fully match their operating conditions.
Our mission is to end that compromise.
We custom-manufacture blow bars for HSI crushers based on the critical operating conditions - feed material, abrasiveness, feed size, and impact intensity - selecting suitable material grades and casting specifications to achieve the optimal balance of wear resistance, toughness, and service life for each application.
Your application is unique. Your blow bars should be too.
HSI Blow Bars for Limestone Crushing
Limestone can range from relatively soft to highly abrasive, depending on its composition and silica content.
For the secondary, tertiary, or fine crushing of pre-screened, clean, and consistently sized limestone, high-chromium HSI impact crusher blow bars are the preferred choice.
For HSI crushers processing limestone containing hard impurities, or for primary HSI crushers handling medium-to-low hardness limestone, manganese steel blow bars may be considered.
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HSI Blow Bars for Hard Rock Crushing
High-chromium blow bars are the preferred choice for general hard rock crushing.
However, they are prone to cracking when processing extremely hard material under high-impact loads.
In this case, dual-metal composite blow bars for HSI crushers should be considered.They use carbon steel or low-alloy steel backing to deliver sufficient toughness and structural support, while high-chromium iron forms the working face to deliver superior wear resistance.
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HSI Blow Bars for Aggregate Crushing
Aggregate production encompasses a wide range of materials and crushing conditions.
The appropriate blow bar material depends on feed size, rock type, abrasiveness, impact strength, and required product specifications.
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HSI Blow Bars for Concrete Recycling
Concrete recycling impact crushers frequently encounter feed material containing rebar and scrap iron, making manganese steel blow bars the preferred choice.
For clean recycled concrete from which rebar and scrap iron have already been removed, HSI crushers equipped with high-chrome blow bars can be used for secondary and tertiary crushing.
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HSI Blow Bars for Asphalt Recycling
For HSI impact crushers in asphalt recycling applications, high-manganese steel blow bars are rarely used.
Mainstream options include martensitic alloy steel blow bars, high-chromium cast iron blow bars, and ceramic-embedded blow bars.
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HSI Blow Bar Manufacturer | Shata Machinery
Application-Engineered Custom Blow BarsWe do not ask customers to select blow bars for HSI crushers from a limited catalog or product list, as even the most extensive product range cannot precisely match a customer's specific crusher and operating conditions.
Instead, we work collaboratively with the customer to analyze the operating conditions and the crusher's structure and model; once these details are clearly understood, the specifications for the blow bars are essentially determined.
Our Foundry Capability
Our foundry runs three production lines using lost foam casting, resin sand, and shell molding processes, with an on-site heat treatment facility.
We have an annual production capacity of 6,000 tons of castings, including blow bars for HSI crushers and other wear-resistant and heat-resistant components in various materials and specifications.
Our technical team is capable of designing casting molds and tooling.
We have also developed a dedicated CNC machining process for high-chromium cast iron blow bars. This allows us to overcome machining difficulties with ultra-hard castings and guarantee excellent dimensional accuracy.
Our factory is equipped with a comprehensive range of testing equipment for material analysis, mechanical property testing, hardness inspection, and non-destructive testing.
Every batch of blow bars for HSI crushers undergoes systematic inspection by our QC team, and visual inspection reports are supplied to guarantee full compliance on all quality metrics.
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