Manganese Cone Crusher Liners

What is manganese cone crusher liners?

Cone crusher liners include mantle and concave. Mantle: Covers the cone head of the crusher to protect it from wear. It is the inner sacrificial wear liner that sits on the cone head. Concave: Sits in the upper frame of the crusher to protect it from wear. It is the outer sacrificial wear liner that sits inside the upper frame. They are the main crusher replacement parts. Because of the working conditions, manganese steel is the standard material choice for those liners. Those manganese steel mantle and concave are called manganese cone crusher liners.

 

Why manganese steel?

Manganese steel, also called Hadfield steel or mangalloy, is a steel alloy containing 12-14% manganese. Renowned for its high impact strength and resistance to abrasion in its hardened state, the steel is often described as the ultimate work hardening steel. Manganese steel has no equal its ability to work-harden. Although it is normally reported that a maximum hardness of about 550 BHN is obtainable, the typical maximum hardness on worn castings is in the 400–450 BHN range. With the impact of raw stone, the surface of manganese steel parts hardness higher and higher. Because of this characteristic, manganese steel is the standard material choice for crusher wear parts, which include cone crusher liners.

 

How many grades of manganese steel?

Except for the standard 12-14% manganese steel, there are also some other grades of manganese steel, such as Mn18 (17%-19% manganese), Mn22 (21%-23% manganese), Mn18Cr2 (17%-19% manganese with 2% chromium), Mn22Cr2 (21%-23% manganese with 2% chromium) , and manganese alloy steel (manganese with some rare elements) . For more details →

 

 

How to choose the right grade of manganese steel?

Before choosing the right grade of manganese steel for your cone crusher liners, you need to know more about your material properties and hardness.

 

What is your material crushability?

Crushability means how easily is product broken into smaller fragments.

Crushability
CLASSIFICATION	CRUSHABILITY (%)	BOND WORK INDEX (KWH/T)	LOS ANGELES VALUE	UCS (MPa)
Very Easy	50+	0-7	27+	0-90
Medium	40-50	7-10	22-27	90-150
Difficult	20-30	14-18	12-17	220-300
Very Difficult	10-20	18+	5-12	300+

Notice:

BOND WORK INDEX: The amount of energy required by plants to crush material.

LOS ANGELES VALUE: The Los Angeles test is commonly used to evaluate the hardness of aggregates to find the suitability of aggregates for use in road construction. Therefore, the road aggregates should be hard enough to resist abrasion.

UCS (UNIAXIAL COMPRESSIVE STRENGTH): Predicting the strength and brittleness of rocks from a crushability index.

 

What is your material abrasiveness?

Abrasiveness: It is very important to know the abrasive qualities of the material you are looking to crush. Materials can be soft but abrasive. The abrasive nature of the material will dictate the estimated wear life of your wear parts and what metallurgy should be utilized.

Abrasiveness
CLASSIFICATION	FRENCH ABRASIVENESS ( G/TON)	ABRASION INDEX
Non Abrasive	0 – 100	0.0 – 0.1
Slightly Abrasive	100 – 600	0.1 – 0.4
Medium Abrasive	600 – 1200	0.4 – 0.6
Abrasive	1200 – 1700	0.6 – 0.8
Very Abrasive	1700 +	0.8 +

Notice:
FRENCH ABRASIVENESS: The Abrasivity Coefficient (ABR) is defined as the ratio of the plate’s weight loss to the mass of the tested material. The index is given in grams per ton and varies between 0 to over 2000, depending on whether the rock is respectively little or highly abrasive.

Material Properties

Material Properties
ROCK NAME	CRUSHABILITY	ABRASIVENESS
Amphibolite	25-46	30-1600
Basalt	20-44	500-2300
Diabase	18-44	450-2300
Diorite	20-36	400-1700
Dolomite	30-56	20-450
Gabbro	27-34	800-1700
Gneiss	30-67	600-1600
Granite	28-90	900-1900
Gravel	30-55	300-2500
Limestone	30-62	0-500
Rhyolite	16-56	700-1900
Sandstone	32-60	300-2200
Quartzite	22-65	1400-2400

 

What is your material hardness?

The hardness of a material is a major consideration in the selection of the type of crusher to use. Hardness is a factor in the amount of wear and tear crushers and screens experience.

MOHS Scale Of Hardness
SCALE	MINERAL	EXAMPLES
1	TALC	Baby Powder
2	GYPSUM	Finger Nail, Gold
3	CALCITE	Concrete, Limestone
4	FLOURITE	Marble, Copper Penny
5	APATITE	Window Glass
6	FELDSPAR	Steel Blade Knife
7	QUARTZ	Granite, Sand
8	TOPAZ	Topaz
9	CORUNDUM	Ruby, Sapphire
10	DIAMOND	Diamond

 

 

Material selection for your cone crusher liners

We supply various kinds of materials to suit to crush different materials.

Material	Applications	Properties
Mn14Cr2	hardest material, mildly abrasive material	highest impact resistance, low abrasion resistance
Mn18Cr2	harder material, medium abrasive material	higher impact resistance, better abrasion resistance than Mn14
Mn22Cr2	hard material, most abrasive material	less impact resistance, better abrasion resistance than Mn18
Mn18Cr2+TIC	hardest material, most abrasive material	highest impact resistance, highest abrasion resistance
Alloy Steel	harder material, medium abrasive material	magnetic separation

 

 

How about Qiming Machinery manganese cone crusher liners?

Qiming Machinery stocks and supplies an extensive range of aftermarket manganese cone crusher liners to suit the majority of the different makes and models of cone crushers in operation around the globe. All liners supplied by crusher spares are manufactured and machined to the highest quality standard and are all covered by our full guarantee for correct fitment and superior performance. Case studies and customer reports comparing our wear liners to other suppliers have displayed up to a 50% increase in wear life across various applications using the identical profile design, Our technical sales team, product engineers and pattern makers work closely together alongside our customers to develop and modify cone crusher liner designs to further increase wear life, some of these modified designs have increased wear life in excess of 300% over standard design liners.

Benefits

• Qiming Machinery supplies all kinds of manganese grades to cast cone crusher liners;
• Compare with other suppliers, our quality more stable and wearable;
• Qiming Machinery supplies a stick quality control system;
• There are thousands of patterns can be used.