To improve the repair process, adjust the transposition method by replacing only the worn components with parts that are slightly or not worn at all, ensuring the system continues to function efficiently. This approach helps maintain performance while minimizing unnecessary replacements.
Secondly, apply the repair size method by refacing or reconditioning damaged parts to restore their original dimensions and geometry. This involves adjusting the corresponding components as well to meet the required technical specifications. For example, if the cylinder of a Dongfanghong-75 (54) tractor is worn, it can be honed to increase its diameter by 0.25, 0.5, 0.75, 1.0, or 1.25 mm, depending on the repair grade, and then paired with appropriately sized pistons and piston rings.
Thirdly, use the additional parts method by adding a specially designed component to the worn area in order to compensate for the wear and restore the original fit and function of the part.
Fourthly, implement the partial or full replacement method when the damage is too severe or the cost of repair is too high. In such cases, replace the entire part with a new one. If only a portion of the part is damaged, remove the faulty section and fabricate a new one using welding or other suitable techniques to reconnect it with the original base, thereby restoring the part's functionality.
Fifthly, employ methods like welding, gas welding, brazing, electroplating, spraying, plastic repair, forging, pressing, machining, heat treatment, and others to restore the damaged parts to their original size and performance standards. These techniques are often more cost-effective, with repair costs typically ranging from 5% to 50% of the price of a new part.
When performing any of these repairs, it’s essential to ensure that the precision of the parts remains intact, the surface hardness and wear resistance are not compromised, the metal structure is not altered, and no harmful residual stresses are introduced. The repaired parts should also maintain their structural integrity and performance after the repair process.
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