In heavy-duty crushing industries such as mining, quarry, aggregate production, cement plants and metal recycling, crusher hammers are one of the most critical wear parts directly affecting production efficiency, downtime and maintenance cost.
A low-quality hammer may wear quickly, crack, break suddenly or even damage the crusher rotor and shaft. Once hammer failure causes unplanned shutdown, the customer not only loses spare parts cost, but also loses production time, labor cost and operating profit.
For this reason, more and more customers are choosing double liquid bimetal crusher hammers.
TangShan Polarislink Advanced Materials Technology Co.,Ltd. specializes in manufacturing high-performance crusher hammers with stable quality and long service life. Our double liquid bimetal hammer combines Cr26 high chromium alloy at the hammer head with 35# carbon steel at the hammer shank, achieving both excellent wear resistance and superior impact toughness.
What Is a Double Liquid Bimetal Crusher Hammer?
A double liquid bimetal hammer is produced by a special dual-liquid composite casting process. The hammer working area uses high chromium alloy Cr26 material, while the hammer handle and mounting area use 35# carbon steel. This design solves the contradiction between wear resistance and toughness.
Cr26 high chromium alloy provides excellent wear resistance, high hardness and strong anti-abrasion performance under severe crushing conditions. 35# carbon steel provides good toughness, strong impact resistance and reduces the risk of hammer breakage.
Why Use Different Materials for Hammer Head and Hammer Shank?
Many customers ask why the entire hammer is not made from high chromium material. The reason is simple. High chromium alloy is extremely wear resistant, but under heavy impact it is relatively brittle. If the entire hammer is made from high chrome material, sudden overload or material blockage may cause hammer cracking or shaft damage.
The 35# carbon steel hammer shank acts like a buffer zone. It absorbs impact energy and protects the crusher rotor and hammer shaft. In actual operation this means less shaft wear, lower rotor damage risk and reduced maintenance cost.
In the crusher industry, customers often say “35# steel does not damage the shaft.” This is extremely important for long-term crusher operation.
Applications of Double Liquid Bimetal Crusher Hammers
Double liquid bimetal hammers are widely used in mining industry, quarry and aggregate production, cement plants, limestone crushing, granite crushing, basalt crushing, coal crushing, construction waste recycling and metal recycling industries.
Typical crusher types include hammer crushers, impact crushers, reversible hammer crushers, heavy hammer crushers and single-stage crushers.
Common international crusher brands include Metso, Sandvik, Terex, Kleemann, Hazemag, Thyssenkrupp, McCloskey, SBM, Shanbao, Kinglink and Liming.
Common Problems During Hammer Usage
Hammer edge wear is one of the most common problems. After long-term crushing, hammer edges become rounded and wear resistance decreases. Possible reasons include excessive rotor speed, oversized feed material, high silica content and improper material selection. Solutions include adjusting rotor speed, controlling feed particle size, optimizing feeding system and selecting suitable alloy material.
Hammer breakage is another serious issue. Main causes include poor casting quality, shrinkage cavities, gas porosity, improper heat treatment, overload impact and metal entering the crusher chamber. Our company has maintained stable quality for 29 years without hammer fracture caused by casting defects. Our hammers have no gas porosity, no sand inclusion and stable metallographic structure.
Material blockage may cause sudden impact load. Customers should reduce oversized feed material, maintain stable feeding, avoid excessive moisture materials and install iron removal systems. The toughness of the 35# steel hammer shank significantly reduces damage risk during sudden blockage situations.
Professional Manufacturing Process
At TangShan Polarislink Advanced Materials Technology Co.,Ltd., every hammer follows strict manufacturing procedures.
We use precision casting patterns according to crusher working conditions and customer drawings. Depending on product structure and quantity, we use resin sand casting, lost foam casting and composite casting technology.
Every furnace of molten steel is sampled before pouring. We perform spectrometer analysis for carbon, chromium, manganese, silicon, molybdenum and other alloy elements. Only qualified molten steel can enter the pouring stage.
The Cr26 high chrome alloy and 35# carbon steel are combined through advanced dual-liquid casting technology. This process ensures strong metallurgical bonding and stable composite interface performance.
Heat treatment directly determines hammer performance. Our company uses automatic temperature control furnaces, strict holding time control and controlled cooling processes. Complete heat treatment records are available for every batch.
Proper heat treatment ensures uniform hardness, stable metallographic structure, improved toughness and reduced internal stress.
Whether the hammer shaft hole requires machining depends on customer installation requirements and crusher precision standards. For high precision crushers, shaft holes are usually machined by CNC equipment to ensure accurate installation and stable operation.
Strict Quality Inspection Before Delivery
Every batch of crusher hammers undergoes strict inspection including spectrometer chemical analysis, hardness testing, metallographic inspection, impact testing, tensile testing, dye penetrant inspection, digital ultrasonic flaw detection and dimensional inspection.
Our testing equipment includes digital spectrometers, metallographic microscopes, ultrasonic flaw detectors, hardness testers and three-coordinate measuring machines.
Before delivery, customers receive complete quality documentation including hardness test reports, impact and tensile test reports, metallographic inspection reports, heat treatment records, complete furnace videos and attached cast test bars.
Why Choose TangShan Polarislink Advanced Materials Technology Co.,Ltd.?
Tangshan is one of the world’s most important steel industry bases. Our location advantages include strong industrial supply chain, stable raw material supply, lower production cost and experienced technical workers.
Our advantages include 29 years manufacturing experience, stable product quality, no quality-related shutdown accidents, rich export experience, professional technical support and cost-effective products.
Our crusher hammers are widely exported to Europe, Australia, Russia, Middle East, Indonesia, Central Asia, South America and Africa.
For mining and quarry customers, stable hammer quality means less downtime, lower maintenance cost, higher production efficiency and more stable profit.
TangShan Polarislink Advanced Materials Technology Co.,Ltd.
www.polarislink.net
