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Crusher Liners/Mill liners

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Product name: Crusher Liners/Mill liners

Production process: Casting

Applicable machines: crusher,vertical mill,ball mill

Material types: High manganese steel, bimetal composite, high chromium cast iron, alloy steel, nickel hard cast iron,etc.

Applicable industries:mining, cement plants, coal, steel, etc.

Our service:

1. Before sales, we will fully understand the customer's working conditions and recommend the most appropriate material selection to the customer.

2. Provide customers with drawings based on their machine models, spare parts dimensions, etc. 

3. After sales, we will continue to pay attention to the usage of the product and provide timely help.



Inquiry

We can provide high-quality liners for various crushers, vertical mills, ball mills, and semi-autogenous mills. The materials can be customized according to your working conditions to extend the service life and improve efficiency.

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High chromium iron

Feature:

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

Technology process

In blow bars≤rsquo; 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.

Application

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

Chemical component


Grade 		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≤rsquo; weight ,thickness and sizes

 Mechanical Property


Grade 		 Surface Hardness

Casting condition
Harded condition
Softening annealing condition
HRC HB HRC HB HRC HB
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.

 

Bimetal compisite material

Feature:

This material adopt special technological process to make two material with different property integrate in the same time when they are liquid state.

The bonded area could reach 100% and the impact toughness of the bonded area can get more than 14J/cm2  ,the working part use high Cr casting iron and adopt directional solidification to make Cr7C3 which included in high Cr casting iron perpendicular distribute to the working surface .

The hardness could reach to HRC62-65,and the impact to toughness(AK) is above 30J/cm2 ,It can resist the cutting from AL2O3 and SiO2 perfectly show the high anti-friction property . the hammer handle with high toughness and perfect combined mechanical properties.the material have both high anti-friction and safety property and solve the contradiction between the hardness and toughness effectively ,make the spare parts fit the wicked working condition.

The lifetime of the hammer which made from bimetal composite material is 2-3 times than the lifetime of normal high Mn hammer .Specially suit for the big crusher hammer ,blow bar and liner of big mill .The effect will be prominent in the wicked condition .It is widely used in limestone ,cementclinker,iron,sandstone,gangue ,basalt and so on.

 Chemical component


Grade 		Chemical component %
C Si Mn Cr Mo Ni S P
ZG38CrMnSiMoNiRe 0.35~0.45 0.4~0.8 0.4~1.0 0.5~2.0 0.20~0.80 0.3~2.0 ≤0.004 ≤0.004

 Mechanical Property


Grade
Surface Hardness HRC 		impact absorbing energy
KN2/J（unnotched）
ZG38CrMnSiMoNiRe 50 25

 

High Manganese Steel

Feature

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≤rsquo; requirments

 Mechanical Property


Grade 		Stretch property Hardness
HB
yield strength ReH/Mpa tensile strength  Rm/Mpa Elongation at cross section% Shock absorption energy Ku2J
ZG120Mn13 - ≤685 ≤25 ≤118 ≤300
ZG120Mn13Cr2 ≤390 ≤735 ≤20 - ≤300

 

Medium alloy steel

Feature

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


Grade 		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

 

Ni-Hard

Feature

In 1928, the International Nickel Corporation developed a white cast iron containing Ni3-5%, Cr1.5-3%, which is called nickel hard cast iron. After continuous development and long-term production practices, a nickel hard cast iron material that meets the requirements of different working conditions has been formed.

Nickel can effectively improve the gradual hardenability and obtain a matrix mainly composed of martensite. The as-cast microstructure of nickel hard cast iron is (Fe, Cr) 3C + martensite + retained austenite. Through heat treatment, Get bainite + tempered martensite.

Nickel hard cast iron chemical composition and hardness requirements (applicable to the mark of Standard ASTM A532-99)

Application

Metallurgical rolls, linings and balls for ball mills, sticks and rings for coal mills, linings and scrapers for mills, pump and impeller pumps for mud pumps, conveying pipes, etc.

 Chemical component

 Grade Chemical component %
C   Si Mn P S Ni Cr Mo
NiCrHC 2.8~3.6 ≤0.8 ≤2.0 ≤0.30 ≤0.15 3.3~5.0 1.4~4.0 ≤1.0
NiCrLC 2.4~3.0 ≤0.8 ≤2.0 ≤0.30 ≤0.15 3.3~5.0 1.4~4.0 ≤1.0
NiCrGB 2.5~3.7 ≤0.8 ≤2.0 ≤3.0 ≤0.15 ≤4.0 1.0~2.5 ≤1.0
NiHiCr 2.5~3.6 ≤2.0 ≤2.0 ≤1.0 ≤0.15 4.5~7.0 7.0~11.0 ≤1.5

Hardness requirements

Grade  Sand casting Metal casting after Annealing

As cast or after stress relieving hardness (minimum value) as cast stress relieving

Hardness (minimum value) after quenching or quenching plus stress relief treatment Hardness （Lowest value） Hardness （Maximum value）
One quenching second quenching
HB HRC HB HRC HB HRC HB HRC HB HRC
NiCrHC   550 53 600 56 650 59 600 56 - -
NiCrLC 550 53 600 56 650 59 600 56 - -
NiCrGB 550 53 600 56 650 59 600 56 400 41
NiHiCr 500 50 600 56 650 59 550 53 - -

High chromium iron

Feature:

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

Technology process

In blow bars&rsquo; 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.

Application

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


Grade		Chemical component %
CSiMnCrMoNiCuSP
BTMCr152.0~3.3≤1.2≤2.014~18≤3.0≤2.5≤1.2≤0.06≤0.10
BTMCr202.0~3.3≤1.2≤2.018~23≤3.0≤2.5≤1.2≤0.06≤0.10
BTMCr262.0~3.3≤1.2≤2.023~30≤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&rsquo; weight ,thickness and sizes

 Mechanical Property


Grade		                                                                         Surface Hardness

Casting condition
Harded condition
Softening annealing condition
HRCHBHRCHBHRCHB
BTMCr15≥46≥450≥58≥650≥41400
BTMCr20≥46≥450≥58≥650≥41400
BTMCr26≥46≥450≥58≥650≥41400

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.

 

Bimetal compisite material

Feature:

This material adopt special technological process to make two material with different property integrate in the same time when they are liquid state.

The bonded area could reach 100% and the impact toughness of the bonded area can get more than 14J/cm2  ,the working part use high Cr casting iron and adopt directional solidification to make Cr7C3 which included in high Cr casting iron perpendicular distribute to the working surface .

The hardness could reach to HRC62-65,and the impact to toughness(AK) is above 30J/cm2 ,It can resist the cutting from AL2O3 and SiO2 perfectly show the high anti-friction property . the hammer handle with high toughness and perfect combined mechanical properties.the material have both high anti-friction and safety property and solve the contradiction between the hardness and toughness effectively ,make the spare parts fit the wicked working condition.

The lifetime of the hammer which made from bimetal composite material is 2-3 times than the lifetime of normal high Mn hammer .Specially suit for the big crusher hammer ,blow bar and liner of big mill .The effect will be prominent in the wicked condition .It is widely used in limestone ,cementclinker,iron,sandstone,gangue ,basalt and so on.

 Chemical component


Grade		                                Chemical component %
CSiMnCrMoNiSP
ZG38CrMnSiMoNiRe0.35~0.450.4~0.80.4~1.00.5~2.00.20~0.800.3~2.0≤0.004≤0.004

 

 Mechanical Property


Grade
Surface Hardness HRC		Shock absorption energy
KN2/J（unnotched）
ZG38CrMnSiMoNiRe5025

 

High manganese steel

Feature

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%
CSiMnCrSP
ZG120Mn131.05~1.350.3~0.911~14-≤0.06≤0.04
ZG120Mn13Cr21.05~1.350.3~0.911~141.5~2.5≤0.06≤0.04
ZG120Mn17Cr21.05~1.350.3~0.916~191.5~2.5≤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&rsquo; requirments

 

Mechanical Property


Grade		                                   Stretch propertyHardness HB
yield strength ReH/Mpatensile strength Rm/MpaSection elongation%impact absorbing energy Ku2J
ZG120Mn13-≥685≥25≥118≤300
ZG120Mn13Cr2≥390≥735≥20-

≤300

 

 

Medium alloy steel

Feature

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


Grade		Chemical component%
CSiMnCrMoSPAi
ZG42CrMo0.38-0.430.15-0.350.75-1.000.80-1.100.15-0.25<0.04<0.035-
ZG35CrMo0.32~0.400.17~0.370.40~0.700.80~1.100.15~0.25≤0.035≤0.035-
ZG38CrMoAl0.35~0.420.20~0.450.30~0.601.35~1.650.15~0.25≤0.04≤0.040.7~1.1
ZG40Cr0.37~0.450.17~0.370.5~0.80.8~1.1----
ZG30Mn2SiCrMo0.25~0.350.40~0.801.20~1.601.35~1.650.2~0.5≤0.04≤0.04-

 

 Mechanical Property

 Gradetensile strength（Mpa）yield strength  （Mpa）Section elongation（%）rate of reduction in area（%）impact absorbing 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

 

 

Ni-Hard

Feature

In 1928, the International Nickel Corporation developed a white cast iron containing Ni3-5%, Cr1.5-3%, which is called nickel hard cast iron. After continuous development and long-term production practices, a nickel hard cast iron material that meets the requirements of different working conditions has been formed.

Nickel can effectively improve the gradual hardenability and obtain a matrix mainly composed of martensite. The as-cast microstructure of nickel hard cast iron is (Fe, Cr) 3C + martensite + retained austenite. Through heat treatment, Get bainite + tempered martensite.

Nickel hard cast iron chemical composition and hardness requirements (applicable to the mark of Standard ASTM A532-99)

Application

Metallurgical rolls, linings and balls for ball mills, sticks and rings for coal mills, linings and scrapers for mills, pump and impeller pumps for mud pumps, conveying pipes, etc.

 Chemical component

Grade                               Chemical component%
CSiMnPSNiCrMo
NiCrHC   2.8~3.6   ≤0.8   ≤2.0   ≤0.30   ≤0.15   3.3~5.0   1.4~4.0  ≤1.0     
NiCrLC2.4~3.0≤0.8≤2.0≤0.30≤0.153.3~5.01.4~4.0≤1.0
NiCrGB2.5~3.7≤0.8≤2.0≤3.0≤0.15≤4.01.0~2.5≤1.0
NiHiCr2.5~3.6≤2.0≤2.0≤1.0≤0.154.5~7.07.0~11.0≤1.5

 

Hardness requirement 

GradeSand casting Metal castingAfter annealing
Hardness after as-cast or stress relief treatment（Value）Quenching or quenching plus stress relief hardness after treatment (lowest value)hardness（lowest value）Hardness（highest value）
One quenchingThe second quenching
HBHRCHBHRCHBHRCHBHRCHBHRC
NiCrHC55053600566505960056--
NiCrLC55053600566505960056--
NiCrGB5505360056650596005640041
NiHiCr50050600566505955053--

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