With the development of urbanization and construction industry, the artificial sand industry has also been well developed, because jaw crusher features such as fool-like operation, low cost and convenient maintenance are widely used, and the main working mode of jaw crusher is to use jaw plate for crushing operation, so the jaw plate type of jaw crusher is very easy to be damaged, so it is very important to choose a good jaw plate, what are the main factors that determine the quality of the jaw plate?
The first factor is the material selection of jaw plate
When we choose the jaw plate used in jaw crusher, the wear resistance of the material determines the service life of the jaw plate, so it is very important to choose the material of the jaw plate when casting, generally can choose white cast iron or high manganese steel, white cast iron hardness is greater, wear resistance is better, easy source, cheap, but its shortcomings are brittle, easy to break, short service life, and high manganese steel wear-resistant, with work hardening performance, greatly enhanced the service life of jaw plate.
The shape of jaw plate
The life of jaw plate is related to the cost of jaw crusher, and the life of jaw plate is related to its shape. Generally speaking, the jaw plate of small and medium-sized jaw crusher is designed in the shape of upper and lower symmetry. The jaw plates of the large jaw crusher should be designed to be symmetrical so that they can be replaced after wear and tear. This design mode can reduce the frequency of jaw plate replacement and reduce the cost of equipment production.
Factor 3. The ratio between moving jaw and fixed jaw
The production process of jaw crusher mainly depends on the fixed jaw plate and movable jaw plate, the interaction of the two determines the efficiency of the production process, so when casting, must pay attention to the combination of the two, generally speaking, in the design, the crushing plate of the movable jaw plate and the fixed jaw plate should have the tooth peak opposite the tooth valley. This kind of design method, in the crushing time, besides having an extrusion effect on the material, there is also a bending effect, the invention makes the material crushing easier and reduces the damage of the jaw plate during the crushing process.
Factor 4, when pouring, pouring temperature should be as low as possible, pouring speed should be as fast as possible.
When casting jaw plate of jaw crusher, once it is solidified in pouring stage, the sand box should be loosened in time. The chillers should be clean and easy to melt, the amount should be less. Besides, the three-dimensional size of cooling iron and the size of three-dimensional cooling material are functions of 0.6 ~ 0.7 times. If it's too small, it won't work. If it is too large, the jaw plate casting will crack.