Wear parts center


High chromium iron roller

High chromium iron roller

High chromium iron roller

Silicon manganese steel roller

Silicon manganese steel roller

Silicon manganese steel roller

Silicon manganese steel roller

Silicon manganese steel roller

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

We can not only provide users with reliable wear-resistant spare parts for vertical grinding and casting, but also have a professional surfacing team with excellent technology and rich experience. They can be operated on-line and off-line, and can provide users with satisfactory secondary welding. 

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

表面硬度 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.

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(%) reduction of crosssection area(%) 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

UBE Japan Fuller USA Losche Germany Liming Heavy Industry (China) Pfeiffer Germany A-C USA
Shenyang Heavy Industry China F.L.Smidth Denmark Kawasaki Japan Sket Germany Raymond USA Mitsubishi Japan
Humboldt Germany IHI Japan Polusius Germany Hefei cement research&design Institute  (HRM) Chuangshu Jiankuang China (CJRM) Jiangsu Pengfei(PRM)

Customer case

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Luoyang Zhili cooperated with Lafarge-holcim cement group in India

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