Impact crusher parts

Austenitic Manganese Steel / Mn Steel in the below grades:

• BS3100 BW10
• ASTM A128C
• Mn13Cr2  MnCr13.2, 12-14%
• Mn18Cr2  MnCr18.2,  18%
• Mn20Cr3 MnCr20.3, 20%

Austenitic Manganese steel or Mn steel  provides the maximum resistance to shock loading and is widely used in primary impactor crushing applications.   Due to the tough and ductile nature of this material Mn blowbars are a good choice if there are uncrushable items in the feed. Primary applications offer ideal conditions for work-hardening, however if the feed is particularly abrasive the work-hardening effect will be negligible. In this case other wear materials will offer better results. Ask us for advice.

Manganese hammers and blowbars can  also be produced with titanium carbide TiC inserts. TiC has a hardness of 560-620HV (60-62HRC). In this process rods of TiC are cast into the wearing surface of the blowbar or hammer, this dramatically increases the wear life. The wearing  surface maintains its shape better during its wear life, giving more consistent end products over the lifetime of the hammer or blowbar. Our clients in limestone applications and cement plants have seen 2 to 4 times the wear life over standard Mn Steel hammers and blowbars. Grades available:

• Mn13Cr2+TiC
• Mn18Cr2+TiC
• Mn22Cr2+TiC
• M1+TiC
• M2+TiC
• M7+TiC

Martensitic steel hammers and blow bars are widely used in recycling and quarrying, and offer good impact resistance in all but the heaviest of hard rock primary applications. Martensitic steel hammers and blow bars are good for secondary applications. Very large uncrushable objects or pieces of tramp metal should be avoided in recycling applications. This material will accept limited amounts of smaller tramp metal  pieces and will outperform Mn blowbars in abrasive applications. Also available are impact plates, grinding rails, and grates. Our standard martensitic is hardness 54-56HRC, other grades are available.

Chrome white irons have a hardness of  60-62HRC and possess excellent resistance to wearing from highly abrasive and fine feeds, however they cannot accept any uncrushable items or tramp metal in the feed.  

• High chrome Cr27, Cr27Mo1
• Medium chrome Cr18, Cr18Mo1, Cr20, Cr20Mo1
• Ni-Hard
• BS4244 grade 3D
• ASTM A532

Martensitic ceramic blowbars have a honeycomb of hard ceramic particles through which the molten martensitic steel flows during the casting process.   This leads to a finished product which is a metal and ceramic composite material with a wearing surface of hardness up to 88HRA / 2100HV. It gives a significant improvement in wear life over a standard martensitic blowbar. The shape of the striking edge of the blowbar is also maintained much better giving more   consistent end products. Mart Ceramic blowbars are commonly used in recycling applications and in primary quarry applications, however they are not suitable for very hard rock and primary limestone  crushing. Minimal amount of tramp metal can be accepted in the feed.   

Chrome ceramic blowbars have a honeycomb of hard ceramic particles through which the molten chrome iron flows during the casting process. This leads to a finished product which is a metal and ceramic composite material with a wearing surface of hardness up to 88HRA / 2100HV giving a significant improvement in wear life over a standard chrome blowbar. Chrome ceramic blowbars are commonly used in secondary applications, they are not suitable for primary crushing. Zero tramp  metal can be accepted in the feed.   

Dual hardened hammers or bi-metallic hammers for hammermills. In this type of hammer the wearing part or head of the hammer is 60-62HRC giving maximum wear resistance, especially with highly abrasive feeds. The fixing or mounting part of the hammer is around 200BHN which gives the hammer good tenacity and impact resistance. Especially suited for larger hammer mill crushers, this type of hammer is widely used in the processing of limestone, cement, and in oil shale production.

AHRB can supply parts for:

• VSI crushers
• Rotors and rotor assembly (dynamic and static balancing see video)
• Cavity wear plate sets 
• Distributor plates
• Lower wear plates
• Upper wear plates
• Turbo tip sets
• Extra hard tip sets
• Trail plate sets
• Backup tip sets
• Short backup sets
• Feed eye ring sets
• Lipped wear plate sets
• Distributor bolt rotor tip sets
• Rotor tip sets
• Cavity tip sets 
• Feed tubes