Agricultural Machinery Manufacturing Materials

Most agricultural machinery operates in open air, dusty, humid and dirty environments or in water, and comes into contact with soil, fertilizers, pesticides, manure, rotting plants and water, etc., and is subject to the corrosive effects of these materials and the environment. During operation, some parts are severely worn due to friction with materials such as soil, crop roots, livestock fur, etc., and some parts are subjected to large dynamic loads and impacts. Therefore, in the manufacturing of agricultural machinery, metal and non-metallic materials with corrosion resistance, wear resistance, friction reduction, impact resistance and fatigue resistance, low cost, and raw materials based on the country's resources are often used, and various treatments are used. processes to improve and enhance the performance of these materials.
Steel pipes and cold-formed steel
The frames of planters and cultivators with small loads are often made of square or rectangular cross-section mild steel welded steel pipes, while the frames of share plows, chisel plows, disc plows and disc harrows with larger loads are usually made of square or rectangular cross-section mild steel welded steel pipes. Low alloy manganese steel pipes. Using cold-formed channel steel or curled channel steel from thin steel plates to make frames such as planters and cultivators can significantly reduce weight compared to using hot-rolled steel frames. High-precision cold-drawn thin-walled seamless steel pipes are suitable for manufacturing hydraulic cylinders in agricultural machinery hydraulic systems.
Alloy steel and low alloy steel
Plowshares, disc harrow blades, cultivator shovels, and blades for harvesters and shearers made of alloy steels such as manganese steel, silicon-manganese steel, nickel-chromium steel, chromium-molybdenum steel, and chromium-manganese steel have good durability. Abrasive. Deep well pump shafts and sprayer parts made of low-alloy steel containing chromium, nickel, copper, titanium and rare earth elements have high corrosion resistance. Bimetal composite steel with wear-resistant steel or corrosion-resistant steel as surface material or cladding is also an important material for manufacturing agricultural machinery.
Carbide
Overlaying a layer of carbide on the surfaces of parts such as plowshares, cultivator shovels and harvester blades can exponentially increase the service life of these parts.
Special cast iron
The plow side plates are made of spheroidal graphite manganese cast iron, the feed pellet press die is made of isothermal quenching of bainite-added boron ductile iron, the feed crusher hammer is made of strong white cast iron, and the pearlitic malleable iron is made. The plowshares and rotary tiller machetes, as well as the water pump impellers made of boron cast iron, all have high wear resistance while ensuring the necessary strength and toughness.
powder metallurgy materials
Using powder metallurgy materials to manufacture complex-shaped parts such as gears for agricultural machinery can replace some steel or iron castings. Oil-impregnated bearings made of powder metallurgy porous materials have better friction reducing effects and self-lubricating properties.
Engineering plastics
Engineering plastics have the characteristics of light weight, corrosion resistance, wear resistance and friction reduction. They are widely used in the manufacture of plant protection machinery, livestock breeding equipment, farmland drainage and irrigation machinery and other agricultural machinery parts, such as medicine boxes, liquid pumps, sprays, etc. And powder spraying nozzles, drainage and irrigation pipes, sprinkler nozzles, bearings of water wheel pumps and submersible electric pumps, milk storage tanks and delivery pipes, feed and water supply pipes, livestock drinking fountains, and seeding groove wheels of seeders, etc. Commonly used plastics include polyethylene, polypropylene, polyester or epoxy glass fiber reinforced plastics, polyvinyl chloride, nylon, polyformaldehyde, phenolic plastics and polystyrene. In addition, using low-pressure polyethylene to make plastic plow walls or covering the working surface of the plow walls with polytetrafluoroethylene plastic can reduce frictional resistance.
rubber
It has the characteristics of wear resistance, corrosion resistance and good elasticity. In addition to being used in various transmission belts in agricultural machinery, rubber is also used to make rubber tracks for harvesting machinery, fertilizer star wheels for fertilizer application devices, and rice seedling claws for rice seeders. , feeding rollers of sugarcane planting machines, rubber rollers of paddy hullers, irrigation hoses and various sealing bodies, etc.