If the piston rod of the oil cylinder is strained during use, then we must repair and deal with it in time. I hope you can remember this, because the lighter will affect the normal or it will affect the serious. To the use of the entire hydraulic cylinder, so let's take a look at the specifics with the piston rod manufacturer:
Formation of pull marks: After disassembling the crane, it was found that a piston rod of the luffing cylinder was severely strained, and there were 6 pull marks side by side. The main reason for the strain on the piston rod is: after the dust ring becomes brittle and lumps off, it not only loses its dust-proof function, but also accumulates a lot of dust and magazines, causing the piston rod to directly grind with impurities, causing the piston The rod was strained, and the scars then scratched the rubber seal assembly of the cylinder mouth, causing serious leakage of the hydraulic cylinder.
Repair requirements: The filler and the base material must be firmly and smoothly combined; the seasoning must be durable and easy to be processed by hand; manual processing must ensure that the error of the piston rod diameter is less than 0.06mm. After analysis, it is determined that the filler used is J422 electrode. Because the acid electrode is not sensitive to rust, oil and moisture, it is not easy to produce hydrogenation holes; it has good manufacturability and is easy to operate; the weld seam is beautifully formed; the material has moderate hardness and is easy to process by hand; the arc is stable and the penetration depth is large. The combination is firm.
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