High Chrome Alloy Blow Bar for PF & PFW Impact Crusher
Premium Cr15 / Cr20 / Cr26 Casting | Microstructure Refinement | Advanced Heat Treatment | B2B Container Load Only
Hengtai's industrial-grade high chrome alloy blow bars (also widely known as impact hammer bars or rotor blocks) represent the pinnacle of severe abrasive wear protection inside high-speed impact crushers. Utilizing highly advanced electric arc furnace refining and strict directionally-controlled solidification casting methods, we supply heavy quarrying operators with premium, long-lifespan impact solutions.
By transforming the raw matrix microstructure into a highly uniform martensitic matrix embedded with M7C3 eutectic chromium carbides, our blow bars deliver unprecedented resistance against extreme cutting friction from rocks. We cater exclusively to high-tonnage international B2B distributors and large-scale quarries via 20GP full container-load structures, unlocking unparalleled direct foundry cost savings.
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Metallurgical Super-Hardness & Impact Anti-Breakage Technology
High-Velocity Rock Collision Boundary: Installed firmly on the heavy spinning rotor, the high chrome blow bars violently impact block-fed stone aggregate at peripheral speeds exceeding 35 m/s. The face of the bar bears severe perpendicular crushing friction and sliding wear simultaneously.
Eutectic Carbide Hardness Framework: Our Cr26 formula embeds thousands of micro-carbides throughout the casting body. This raises the overall alloy surface hardness to an astonishing 60 - 65 HRC, successfully blunting and shattering high-abrasion ores like granite or basalt without tearing the metal substrate.
Proprietary Shock-Toughening Multi-Alloy Modification: To conquer the inherent brittleness of traditional high-chromium iron castings, Hengtai micro-alloys the matrix with precise additions of Molybdenum (Mo), Nickel (Ni), and Vanadium (V). Complemented by sophisticated computer-controlled thermal tempering, this eliminates internal macro-residual stress, providing absolute anti-shattering security.
Technical Specifications
| Parameter / Asset Feature | Technical Specification Details (B2B Bulk Casting Standard) |
|---|---|
| Material Grade Classification | High Chromium Alloyed Iron (Cr15, Cr20, Cr26 / ASTM A532 Class III Type A) |
| Microstructure Phase | Martensitic Matrix + M7C3 Primary Chromium Carbides |
| Thermal Treatment Process | Air Quenching + Sub-Critical Secondary Low-Temperature Tempering |
| Surface & Core Hardness Range | 60 - 65 HRC (Uniform through-thickness hardness execution) |
| Impact Toughness Value | Impact energy ak ≥ 8 - 12 J/cm² (Enhanced shock-buffer ability) |
| Dimension Control Allowance | Strictly aligned to OEM tolerances via modern CNC milling finishes |
| Primary Application Media | Secondary & Tertiary Crushing for Limestone, Granite, River Gravel, Basalt |
| Minimum Order Tonnage (MOQ) | 20 Tons (Optimized configuration for full 20GP ocean shipping layout) |
| Pricing Architecture | Get Real-Time Quote (Calculated by weight & raw alloy market rate) |
Comprehensive Impact Crusher Compatibility & Application
Hengtai is highly specialized in manufacturing standard 100% interchangeable replacement blow bars and rotor hammer blocks for the following global standard crusher series:
Standard Impact Crusher (PF Series)
- PF-1007 / PF-1010
- PF-1210 / PF-1214
- PF-1315 / PF-1416 (Heavy)
European Type Impact Crusher (PFW Series)
- PFW-1214II / PFW-1214III
- PFW-1314II / PFW-1314III
- PFW-1318II / PFW-1318III
Crushable Rock Matrices: Exceptionally durable for processing aggressive aggregate materials like Granite rock fragments, high-quartz Sandstone, River Gravel, Basalt aggregates, heavy-friction Ore Tailings, and Limestone blocks.
Frequently Asked Questions
Our 20-ton MOQ is curated specifically for B2B wholesale buyers, aggregate distributors, and mining corporations. Since high-manganese and high-chrome castings are heavy-duty components, a 20-ton order perfectly fills a 20GP container load. This completely minimizes ocean freight costs per ton and streamlines shipping logistics, allowing us to pass the maximum manufacturing savings directly to you.
Due to ongoing market price fluctuations for raw steel, manganese, and chromium alloys, we do not issue fixed pricing online. Please send your required crusher series model numbers, custom blueprints/drawings, or OEM original part numbers to our sales engineers through WhatsApp or Email. We supply updated, volume-based factory-direct quotes in real time.
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Our engineers customize solutions tailored specifically to your project requirements, target capacity, and local conditions.