With the vigorous development of urbanization and construction industry, the artificial sand industry has also been well developed, because of the foolproof operation of the jaw crusher and low price and convenient maintenance and other characteristics are widely used, and the main way of jaw crusher work is to use the jaw plate to carry out the crushing operation, so the jaw plate of the jaw crusher is very easy to be damaged, so it is very important to choose a good jaw plate to determine the quality of the jaw plate factors What are the factors that determine the quality of jaw plate?
First, the choice of materials for the jaw plate
When we choose the jaw plate used in the jaw crusher, the wear resistance of the material determines the service life of the jaw plate, so the jaw plate in the casting, the selection of materials is a very important issue, you can generally choose the white cast iron or high manganese steel, white cast iron has a greater hardness, wear resistance is better, the source is easy, inexpensive, but the disadvantage of the nature of the brittle, easy to fracture, the use of life is short, and the high manganese steel is strong, with work-hardening properties, greatly enhancing the service life of the jaw plate, and high manganese steel is strong, with work-hardening properties, greatly enhancing the service life of the jaw plate. High manganese steel has strong wear resistance and work-hardening properties, which greatly enhances the service life of the jaw plate.
Second, the shape of the jaw plate.
The life span of the jaw plate is related to the use cost of the jaw crusher, and the life span of the jaw plate has a great relationship with its shape. Generally speaking, the jaw plate of small and medium-sized jaw crusher is designed to be symmetrical up and down. The jaw plates of large-sized jaw crusher should be designed to be symmetrical with each other, so that the jaw plates can be replaced after wear and tear. This design pattern can reduce the frequency of jaw plate replacement and lower the production cost of the equipment.
Third, the ratio between the movable jaw and the fixed jaw
The production process of the jaw crusher mainly depends on the fixed jaw plate and the movable jaw plate, the interaction between the two determines the efficiency of the production process, so in the casting, must pay attention to the combination of the two, in general, the design of the movable jaw plate and the fixed jaw plate should be crushing plate tooth peaks to tooth valleys, this design, in the crushing, in addition to the material has a squeezing effect on the role of the material, there are also bending effect, so that the material is crushed more easily and reduce the damage to the crushing process of the jaw plate, so that the crushing process is more easily, and to minimize the damage to the jaw plate. This design, in addition to the crushing effect on the material, there is also a bending effect, making the crushing of the material easier and reducing the damage to the jaw plate during the crushing process.
Fourth, when pouring, the pouring temperature should be as low as possible, and the pouring speed should be as fast as possible.
Casting jaw crusher jaw plate, in the pouring stage once solidified, the sand box should be promptly loosened. The inner cooling iron should be clean and easy to melt, and the dosage should be small. The three-dimensional size of the cooling iron outside and the size of the three-dimensional cooling material is a function of 0.6-0.7 times. If it is too small, it won't work. If it is too large, the jaw casting will crack.
