Wear parts center

Discharging device

Alloyed high manganese steel discharging device

Alloyed high manganese steel discharging device

Alloyed high manganese steel discharging device

Alloyed high manganese steel discharging device

Alloyed high manganese steel discharging device

We can provide you with various brands of Discharging device , also can customize and produce according to your working conditions

The barrel is divided into intermediate baffles of two or three grinding bins. Theseparating wearhouse plate has holes that are smaller than the diameter of the steel balls in the two abrasive cavities to allow the material to pass through and be further milled. Due to long-time friction between steel balls and materials in the two sides of the abrasive silo, the silo panel needs to be very wear-resistant to shorten the replacement cycle. Some ball mills use double-layered diaphragms to better distinguish the two abrasive cavities and prevent them from collapsing and damaging the body.

The double storey partition board is also a kind of separating wearhouse plate, and the materials used are basically the same.

we can provides comprehensive material selection for you

High chromium iron


We use proper alloying and and related technological measures to make the blow bars’ surface hardness reaches more than 58HRC ,  during the process of wearing will maintain high hardness and high wear resistance.

Technology process

In blow bars’ working part we use the technique of directional solidification to make Cr7C3 type carbide is perpendicular to the part.The macro-hardness and micro hardness of carbide can be improved without reducing thoghness.


Suitable for making wearable spare parts with lower impact load and simpler shape.

Chemical component

                                   Chemical component%
C Si Mn Cr Mo Ni Cu S P
BTMCr15 2.0~3.3 ≤1.2 ≤2.0 14~18 ≤3.0 ≤2.5 ≤1.2 ≤0.06 ≤0.10
BTMCr20 2.0~3.3 ≤1.2 ≤2.0 18~23 ≤3.0 ≤2.5 ≤1.2 ≤0.06 ≤0.10
BTMCr26 2.0~3.3 ≤1.2 ≤2.0 23~30 ≤3.0 ≤2.5 ≤2.0 ≤0.06 ≤0.10
1:Allowed to add microscale V,Ti,Nb,B and Re etc.
2:We will choose grade and specific component according to blow bars’ weight ,thickness and sizes


 Mechanical Property

                                                                                 Surface Hardness

Casting condition

Harded condition

Softening annealing condition
BTMCr15 ≥46 ≥450 ≥58 ≥650 ≥41 400
BTMCr20 ≥46 ≥450 ≥58 ≥650 ≥41 400
BTMCr26 ≥46 ≥450 ≥58 ≥650 ≥41 400

1:There are no exact corresponing value between rockwell hardness(HRC) and brine hardness(HB),so ,this two kind of hardness value can be inspend used 。
2:The hardness in the 40%deepness of casting section should be lower than 92% hardness of surface.


High Chromium


High manganese steel refers to high alloy steels containing more than 10% manganese. The biggest features of high-manganese steel are:

The greater external compressive stress or impact load, the more conducive to the formation of hardened layer, so the higher the wear resistance of the casting;

With the gradual wear of the hardened layer, new work hardened layers will continue to form under the influence of external compressive stress or impact loads. Therefore, it is suitable for making wearable spare parts that are subject to high impact load and wear for a long time, and is widely used in metallurgy, mining, building materials, railways, electric power, coal and other broken grinding equipment.

 Chemical component

Grade                                   Chemical component %
C Si Mn Cr S P
ZG120Mn13 1.05~1.35 0.3~0.9 11~14 - ≤0.06 ≤0.04
ZG120Mn13Cr2 1.05~1.35 0.3~0.9 11~14 1.5~2.5 ≤0.06 ≤0.04
ZG120Mn17Cr2 1.05~1.35 0.3~0.9 16~19 1.5~2.5 ≤0.06 ≤0.04
1:Allowed to add microscale V,Ti,B and Re etc.
2:We can produce the other grade high manganese steel  hammer according to customers’ requirments


 Mechanical Property

Stretch property



yield strength ReH/Mpa tensile strength Rm/Mpa Section elongation% impact absorbing energyKu2J
ZG120Mn13 - ≥685 ≥25 ≥118 ≤300
ZG120Mn13Cr2 ≥390 ≥735 ≥20 - ≤300


Medium alloy steel


The alloy structure cast steel is an iron-carbon alloy formed by adding an appropriate amount of one or more alloy elements on the basis of ordinary carbon steel.

Process technology

According to the different elements added, with appropriate smelting and heat treatment process to obtain high strength, high toughness, high wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, non-magnetic and other related special properties.

Scope of application

It is suitable for producing the wear-resisting spare parts with good mechanical strength and good toughness that are required for various working conditions, and the main steel structure castings with the required dynamic load.

 Chemical component

                                Chemical component%
C Si Mn Cr Mo S P Ai
ZG42CrMo 0.38-0.43    0.15-0.35    0.75-1.00    0.80-1.10    0.15-0.25    <0.04 <0.035 -
ZG35CrMo 0.32~0.40 0.17~0.37 0.40~0.70 0.80~1.10 0.15~0.25 ≤0.035 ≤0.035 -
ZG38CrMoAl 0.35~0.42 0.20~0.45 0.30~0.60 1.35~1.65 0.15~0.25 ≤0.04 ≤0.04 0.7~1.1
ZG40Cr 0.37~0.45 0.17~0.37 0.5~0.8 0.8~1.1 - - - -
ZG30Mn2SiCrMo 0.25~0.35 0.40~0.80 1.20~1.60 1.35~1.65 0.2~0.5 ≤0.04 ≤0.04 -


 Mechanical Property

 Grade tensile strength(Mpa) yield strength (Mpa)   Elongation at cross section(%) Section shrinkage rate(%) Shock absorption energy(KV2/J)
ZG42CrMo ≥1080 ≥930 ≥12 ≥20 ≥24
ZG35CrMo ≥985 ≥835 ≥12 ≥20 ≥24
ZG38CrMoAl ≥980 ≥835 ≥14 ≥20 ≥24
ZG40Cr ≥980 ≥785 ≥9 ≥20 ≥24
ZG30Mn2SiCrMo ≥1500 ≥1300 ≥3 - ≥24


Crusher brand accessories we accept customized

Thyssen Krupp Fuller( FLSmidth) Mesto Sandvik Hongxing Humboldt
Raymond Pfeiffer Losche Polusius Svedala( Metso) CITIC( CITIC Heavy Industries)
Krupp Polysius( Cment industry) Tyazhmash( Russia) ANI      

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