Andrushchenko M.І., Ph.D., Osіpov M.Y., Ph.D., Kulikovsky R.A., Ph.D., Kapustіan О.YЕ., Magda Е.S. Akrytova T.О. Designing of the technology of restoration and strengthening of the crankshaft knee-lever presses. Part 2: Technological process and special e
Keywords:
crankshaft, knee-lever press, crank cervix, key groove, wear, modes of surfacingAbstract
A comparative analysis of the methods for restoring worn shaft working elements has shown that the best option for restoring the surfaces of the crankpin and seats is a wide-layer surfacing with a cold rolled strip under the flux, and it is advisable to weld the keyways with a wire of continuous cross section in shielding gases. The parameters of recovery regimes for worn shaft working elements are substantiated. The main ones are: the arc voltage is 30-32 V, the arc current is 650 ± 20 A, the deposition rate is 0.5 cm/s.
A special equipment is proposed on which it is possible to weld a crank neck and seating places. A technological process route is developed.
The technical and economic calculations have shown that when restoring and strengthening even one shaft, the economic effect can reach hundreds of thousands of hryvnias.
References
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