Pe jaw crusher can crush many different ores and rocks whose compression strength between 147 to 245 mpa to coarse

1. PE Jaw Crusher can crush many different ores and rocks whose compression strength
between 147 to 245 Mpa to coarse, medium, and fine crushing. It is the biggest
broken equipment. Among all the parts, jaw is the main venerable one, so it has a
large consumption. DSMAC pay attention to analyze and research the working
conditions of these parts that easy to be damaged, only in this way, can we choose
materials and processing technology in a reasonable way, can we supply the best PE
Jaw Crushers to our clients.
Jaw Plates
The analysis of Jaw crusher’s working principle. The upper part of movable jaw
plate combines with eccentric shaft, and the lower part is supported by thrust plate,
however, fixed jaw plate is bounded on machine frame. When the eccentric moving,
movable jaw plate is pressed by materials, and fixed jaw plate is mainly exposed to
the material sliding cutting action. Through failure analysis, we conclude that
blocking the damage mechanism of jaw is that the repeated extrusion comes from the
materials to jaw can cause abrasion, and the short-range sliding comes from materials
can lead to wear and tear. In order to improve the usage of jaw, we should mainly
consider the hardness and toughness of materials. If the materials have high hardness,
the depth of jaw pressed into jaw is shallow，so that the surface deformation is small.
At the same time, the amount of abrasive sliding comes from materials is small.
Besides, materials should have a certain toughness，so that can prevent the
occurrence of fracture during the extrusion process to make sure the normal usage of
jaw.
Jaw plates materials
The high-manganese steel is the traditional material of the jaw crusher. It has good
shock load capability, but because of unreasonable structures of crusher, the angle
between the fixed jaw plate and movable jaw plate is too large, which is easy to
cause materials’ sliding. Low surface hardness is due to strain hardening is not fully
leaving the jaw, the materials short-cutting leads to the damage of jaw. In order to
improve the usage of jaw, we delve into many kinds of materials for jaw, such as Cr、
MoW、Ti、V、Nband so on, which can disperse strengthening treatment of high-
manganese steel，and improve Its initial hardness and yield strength.we also
developed manganese steel Bu, low-magic III, high chromium cast iron and high
manganese steel composite, ADI of Qu iron and so on，and all of them make good
effect in production.

2. Commercial chromium rely iron has high wear resistance，however, because of the
toughness is poor , so high chromium cast iron jaw is not necessarily made good
effect. In recent years, we use high chromium cast iron cast-bonding in high-
manganese steel jaw plate to form a complex jaw, whose relative density tolerance is
up to three times more, which made the usage of jaw improved highly. This way is
also a effective one to improve the life of jaw, but the process is very complex, so it is
difficult to complete.
Middle carbon low-alloy cast steel is also a wear-resistant materials,because it has
High hardness (≥ 45HRC) (a ≥ 15J/cm) matched with the appropriate toughness, the
material can resist cutting and repeated extrusion caused by fatigue sapling, so it has
good wear resistance. Besides, middle carbon in low alloy cast steel through the
adjustment of the composition and heat treatment process, which can make the
toughness and hardness change in a large range, so that can meet different production
conditions. It contains 0.4～0.8C、0.7～1.3Si、0.7～1.1Mn、1.5～2.5Cr、0.4～
0.6Ni、0.3～0.7Mo. The life of the low carbon alloy steel jaw plates high manganese
steel can be increased by more than three times
DSMAC has PE Jaw crusher and other crushers, which use the advanced
international crusher technology，manufacturing level, and quality of material. We
have sold thousands of machines around the world, which received the good
evaluation from our clients, welcome to call us and communicate with us.