Reduction gear deform uttermost examination seminars

Fag examination ADI reduction gearbox severity esteems ?? As demonstrated in Table XII, succeeding with the draftings assigned severity demands: 28 ~ 35HRC. Fag examination austempered ductile iron gear microstructure of the center part demonstrated in Figures XIII and XIV are on shellfish +10% to 20% residual austenite.

variable speed drives From the above Table 2 to Table 11 and Figures 3 to 12 perhaps distinctly caught: first of all, the bend fag examination of the nowadays product procedure of austempered ductile iron gear enduringness could conform to 6DF1 diesel usage demands, and it has 50% chance of humiliate foundation circle around tangential effect final fag lading of 10.474kN, and bigger than the gear design computing demands tangential drive burden 2.9392kN, its 3.56 times; ADI gear the rest of the program test bending fag test enduringness 6DF1 diesel engine could contact demands.

Second, we could see from the examination effects, the posit than the posit ⑴ ⑵ limit fag burden ⑶ the state ⑷ than state limit fatigue burden must be high up, i.e. Harmonious to growth the the gear bore sizing, bring down reduction gearbox after the heating circles all over number of intervention will aid better the ADI gear boundary fag burden, which is succeeding with the formula laws, but the consequence isn't visible.

And state ⑴ than the state and ⑶ boundary fag burden higher posit ⑵ ⑷ than the posit boundary fag burden is higher, i.e. decarburized level of the root isn't worn away than the root decarburization layer worn away rather than high, and our preceding figured the reverse effects, and the consequences is visible. How come are these? I believe that subsequently deep analysis, gear bend fag failure procedure is a procedure of cracks and crack generation and the crack generation gear fag failure made a bigger part. Austempered ductile iron gear tooth root decarburized layer is not abraded, the substrate for austempered ductile iron, with a richly forcefulness and a bound grade of plasticity and formidability, is not light to be distorted, whilst the lower surface of the ferrite decarburized layer durability, but good plasticity, a plastic tensile tenseness brought forth in the tooth root in the procedure of bend fag test, the test burden and so that the surface of the 1st level of ferrite decarburization by the tooth root fillet -by tooth root circuit The slant – trust on the tooth root fillet – explore trust on the leaking out of the number of cycles of the tooth root fillet cracks parts.