Use: impact crusher
Material: high manganese Mn13%,Mn14%,Mn18%.etc
Features: low abrasion, high resistance
There are different kinds of spare parts for impact crusher. Among
them, liner is one of the most important spare parts. The liner is
easily to be worn out. Therefore, the liner materials should be
required to have both very high hardness surface to resist the
drilling and cutting of ore and very high strength and toughness to
resist impact extrusion.
The function of impact liner of impact crusher
Impact liner is the most important part of impact crusher. Impact
liners are the wearing resistant part of the crusher. They are
installed on the crusher frame and they protect the crusher frame
in the meanwhile.
When the impact crusher is working, the crushing material was fed
into the crushing chamber. The crushing material will firstly hit
the blow bar on the rotor. The crushing material will be crushed
once. Then the crushing material will hit the impact liners and
rebound straight to the blow bar. This process will be repeated
until the crushing material is discharged.
The impact liners are installed to prevent the crusher frame from
wearing. For the whole crusher liners, the cost of impact liner is
much less. It is easier and cheaper to exchange one impact liner
than the whole crusher liners when they are worn and that is one of
the functions of the impact liner.
The main reasons of why liners will be worn
Impact crushers are the the common equipment in mining industry.
Liners are the wearing parts of the impact crusher equipment. This
article will introduce the main reasons of why liners will be worn.
The liners suffer from great forces: While the impact crusher is
working, the fixed liner, the swing liner and the crushing material
are forcing each other. The surface of the liners are suffering
from complicated stress. The drilling, cutting and impact extrusion
are the main way of wearing.
1. The operating conditions are harsh: Because of the job nature of the impact crusher, the liners will
be worn unavoidably. If the impact crusher is under harsh operating
conditions, it will exacerbate the wear of the liners.
2. Hardness and grain size of ore is different: According to the difference of the hardness of crushing material,
the damage degrees of the liner will be different. The harder of
the crushing material, the much force liners will suffer. When
hardness is the same, the bigger of the feeding grain size, the
more serious liner will be worn.
3. The way of feeding material is improper: If the feeding machine of the impact crusher equipment hasn’t installed properly or the feeding material is too much, crushing
chamber will be blocked by the material or any other problems. This
will make the liners suffer from great forces, and strengthen the
wearing of the liners and the liners will be worn seriously.