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Crusher Liners/Mill liners

OEM tailor design

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.

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.

High chromium iron

Feature:

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.

Application

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

Chemical component

Grade	Chemical component %
Grade	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

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 %
Grade	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 %
Grade	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

Grade	Stretch property				Hardness HB
Grade	yield strength ReH/Mpa	tensile strength Rm/Mpa	Elongation at cross section%	Shock absorption energy Ku2J	Hardness HB
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 %
Grade	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 %
Grade	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		Hardness （Lowest value）		Hardness （Maximum value）
	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’ 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.

Application

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

Grade	Chemical component %
Grade	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

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 %
Grade	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	Shock absorption 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%
Grade	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

Grade	Stretch property	Hardness HB
ZG120Mn13	-	≥685	≥25	≥118	≤300
ZG120Mn13Cr2	≥390	≥735	≥20	-	≤300

Grade

Stretch property

Hardness HB

yield strength ReH/Mpa

tensile strength Rm/Mpa

Section 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%
Grade	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）	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%
Grade	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 requirement

Grade	Sand casting						Metal casting		After 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）
	Hardness after as-cast or stress relief treatment（Value）		One quenching		The second quenching		hardness（lowest value）		Hardness（highest value）
	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	-	-