Do you know how to solve the surface problems of large disc harrow manufacturers?

This kind of mechanical equipment actually absorbs the advantages of the same foreign products. According to the standard design, the whole mechanical equipment adopts a combined structure. This integral rigid rake frame is used as the main body, and it is also equipped with hydraulic landing transport rubber wheel, spring leveling mechanism and special bearing sealed and rolling with square hole inside the outer spherical surface. Because of itsLarge disc harrow manufacturersIt has the advantages of reasonable structure, very durable use, convenient transportation, relatively small radius of gyration, very easy adjustment, maintenance, etc. The above piece is its main core component, which is also an important factor related to the level of mechanical equipment. Follow the editor to learn about it!

1. The hardness is uneven. During welding, it is easy to cause uneven hardness due to uneven thickness. If the cladding layer is too hard, it is usually caused by ten carburizing, which means that the operator invades the flame center of oxygen-acetylene flame into the melted cladding layer or the flame center length of the inner flame is greater than three to one. If the hardness of the deposited layer is relatively low, it is generally the result of the metal of the substrate being mixed into the deposited layer.

2. Cracks. If the preheating temperature before deposition is very low, the deposition process can be cooled first if it is not well controlled and deposited. It is easy to make the cladding layer crack. Therefore, preheating and cooling before deposition are an important feature of the oxygen-acetylene flame deposition of nickel-based cemented carbide. In additionLarge disc harrow manufacturersIn the absence of annealing quenching parts on the deposit is also very easy to crack. If the cracks in the deposited layer do not extend into the base metal, it will take a long time to use a grinding wheel to completely clear the cracks. And then in accordance with the provisions of the process to preheat, cladding, slow cooling. If the crack does not extend to the metal of the substrate, the part can be re-premelted to eliminate the crack.

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The correct use and maintenance of the disc harrow: in operation, the technical condition of the rake, scraper, square shaft, bearing, angle adjuster and connecting parts should be checked frequently, especially the end nut of the disc harrow group and the fixing bolts of each bearing. If it is found loose, tighten it in time, and remove the weeds and dirt on the workpiece in time.

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Defects in castings and forgings

The defects produced in the casting and forging process are similar to the defects produced in the ingot, but they are still process defects, including pores, inclusions, shrinkage holes, loose holes, cracks, etc.

Production of castings and forgings

Castings and forgings must be melted by electric furnaces, mainly electric arc furnaces and induction furnaces. According to the different lining materials and slag system, can be divided into acidic furnace and alkaline furnace. Carbon steel and low alloy steel can be smelted in any furnace, but high alloy steel can only be smelted in alkaline furnaces.

Inspection of Casting and Forging

The complex information system management interface of casting and forging, such as poor ultrasonic penetration, coarse grain, uneven organization, etc., all enhance the scattering of an ultrasonic wave by students, and the energy can be effectively attenuated, so that the detectable thickness is smaller than that of forgings.

What are the advantages and disadvantages of casting and forging

One of the advantages of casting and forging is the flexibility of design. Personnel design has a large degree of freedom of design choice for the shape and size of castings, especially for parts with complex shapes and hollow sections. Steel castings can be manufactured using a unique process known as core assembly.