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Cone crushers are also known as cone breakers. Compressive strength of cone crusher is no more than 250MPa.
Applied Materials: Granite, basalt, quartz stone, iron ore, pebbles, green stone, copper ore and limestone.
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Main considerations for the choice of materials in an irrigation system are the ability of the material to withstand mechanical stresses, extreme temperatures, solar radiation, and chemical contacts to which they may be subjected. Mechanical stress may be due to internal conditions such as water pressure, water acidity and alkalinity, water hammer, and vacuum. Components may also be affected by such external forces as earth load, thermal expansion and contraction, and mechanical blows to the component. There are numerous combinations of metals, composites, plastics, ceramics, and elastomers that can be used in components for an irrigation system. Not only should the materials be able to withstand the mechanical and environmental stresses that may occur, but they should be compatible with each other to avoid internal corrosion or galvanic effects. The main considerations in component selection are pressure rating, temperature range, chemical affinity, and cost
The design working pressure is the most important factor in selecting materials for the water distribution system. Typically, pipelines and control devices should be able to withstand twice the normal operating pressure. For instance, if the maximum normal operating pressure is 50 psi, all components should be able to withstand a surge of 100 psi
The ambient and water temperatures should receive some consideration in the selection of construction materials. High temperatures may decrease the strength of plastics. In cases where components may be exposed to high temperatures (e.g. around pump stations), special high-temperature plastics or steel should be used instead of PVC. In areas subject to freezing, consideration should be given to materials that will not fracture as easily as cast iron. Ultraviolet (UV) radiation is a common problem for applications exposed to sunlight. UV radiation may cause degradation of most plastics; therefore, additives such as carbon black are used to inhibit this process. Elastomers are normally less influenced by UV radiation, and metals are usually unaffected
Chemical resistance is an important consideration since microirrigation systems are usually designed with the potential to inject different types of agricultural chemicals ranging from fertilizers to line cleaners. Consequently, unpredictable combinations of often corrosive compounds may travel through the system. Acidic (low pH) conditions will result in corrosion of most metals. Aluminum and zinc are the metals most sensitive to acid. Cast iron, carbon steel, and copper alloys are less sensitive, but for a prolonged exposure to acidic conditions, a resistant material such as 316 stainless steel should be considered. High pH (alkaline) conditions may be harmful to aluminum, zinc, and titanium. Most other metals, as well as most plastics and elastomers, are not sensitive to alkaline conditions
The effect of dissolved solids in water is to increase the electrical conductivity and acceleration of the corrosion processes. Common cations such as calcium (Ca++), potassium (K+), and sodium (Na+) have almost no effect on most metals and plastics, while ammonium (NH4) may attack some plastics and elastomers. Anions such as sulfides and sulfates are much more harmful to both metals and plastics
Solid particles such as sand in the water stream can result in severe erosion of metal and plastic components. Erosion of surfaces can also result from cavitation. Cast iron, mild steel, and copper alloys can be coated by hard metals or ceramics to make them more resistant to cavitation. Plastics and elastomers are more resilient and resistant to cavitation erosion; however, they are more susceptible to abrasion damage from high-velocity solids
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