外文翻譯--磨削過(guò)程中應(yīng)力殘留-資料下載頁(yè)
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【正文】 ress for investigated workmaterials are shown in Figs. 8177。10. In these diagrams the results are summarised for eachworkmaterial regardless of other grinding conditions (grindingwheel properties, grinding 175。uid, grinding parameters). Ineach case the linear dependence was assumed which wasproved in a statistical way (R2 from to ).It results from these 174。gures that the slopes of residualstresscoef174。cient B lines are characteristic for the givenworkmaterial and seem to be independent of other grindingconditions. The highest slope was obtained for bearing steel(L), Fig. 10, and the lowest one for alloy steel (H), Fig. 9.Some additional observations recorded during investigationsindicate that there is a possibility to use the coef174。cientB to predict and/or control such changes in surface layer likemicrocracks, burns or microstructure changes. Additionalinvestigations are necessary to con174。rm the usefulness of thiscoef174。cient in other grinding methods.5. Conclusions1. The grinding coef174。cient B bining power density andwheel/workpiece contact time was developed to predictresidual stress in surface grinding.2. A linear correlation between coef174。cient B and maximumresidual stress was found experimentally. It wascon174。rmed for several workmaterials.3. The relation between coef174。cient B and maximumresidual stress seems to be independent of grindingconditions.4. Coef174。cient B increases linearly with the increase ofgrinding depth and decreases with the increase ofworkspeed. This decrease shows less intensity in therange of higher workspeeds.5. The coef174。cient B is easytoestimate, even online, inindustrial practice.6. The coef174。cient B may be useful in predicting suchsurface layer properties in grinding like microcracks,burns or microstructure changes.References[1] . Althaus, Residual stress in internal grinding, Ind. Diamond Rev. 3(1985) 124177。127.[2] E. Brinksmeier, . To200。nshoff, Basic parameters in grinding, Ann.CIRP 42 (1) (1993) 795177。799.[3] E. Brinksmeier, . Comet, W. Ko200。nig, P. Leskovar, J. Peters, .To200。nshoff, Residual stressmeasurement and causes, Ann. CIRP 31 (2)(1982) 491177。510.[4] . Kruszyn194。ski, . Luttervelt, An attempt to predict residualstresses in grinding of metals with the aid of the new grindingparameter, Ann. CIRP 40 (1) (1991) 335177。337.[5] . To200。nshoff, J. Peters, I. Inasaki, T. Paul, Modelling and simulationof grinding process, Ann. CIRP 41 (2) (1992) 677177。688.[6] E. Vansevenant, A subsurface integrity model in grinding, .Thesis, KU Lueven, 1987.[7] Y. Zheyun, H. Zhonghui, Surface integrity of grinding of bearing steelGCr15 with CBN wheels, Ann. CIRP 38 (1) (1989) 677177。688.
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