Agricultural machinery parts commonly used repair methods

(1) Adjust the transposition method: replace the worn parts with one position, and continue to work by using parts that are not worn or lightly worn.

(2) Repair Dimensions: Repair the damaged parts to change their geometrical dimensions, and add correspondingly changed parts to achieve the specified technical parameters. If the cylinder of the Dongfanghong-75(54) tractor is worn out, the honing diameter can be increased by 0.25, 0.5, 0.75, 1.0 or 1.25 millimeters in accordance with the repair size, and correspondingly enlarged pistons and piston rings are used.

(3)Additional parts method: Use a special part to assemble to the worn part of the part to compensate for the wear of the part and restore its original matching relationship.

(4) replacement parts and partial replacement method: When the parts are damaged to be repaired or repair costs are too high, the replacement of new parts; if a part of the part is partially damaged, the damaged part can be removed, re-create a new In part, the new replacement part is connected to the base part of the original part by welding or other methods to form an integral part, thereby restoring the working ability of the part.

(5) Restoration size method: The damaged parts are restored to the technical specifications specified by the welding (electric welding, gas welding, brazing), electroplating, spraying, rubber replenishing, forging, pressing, car, pliers, heat treatment and other methods. And performance. In this method, economic benefits are taken into account. The cost of a typical repaired part is about 5 to 50% of the original price.

Matters needing attention: can not destroy the accuracy of the shape of parts; can not reduce the hardness and wear resistance of the surface of the parts; can not make the metal matrix of the parts change and produce harmful residual forces, can not affect the processing of the parts after repair.

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