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 Posted: Sat 17:04, 08 Jan 2011 Post subject: air jordans 20CrMnMo CARBURIZED _3207 effective co |
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20CrMnMo CARBURIZED effective control of the depth of hardening
1 ~ Kq region, quenching with quenching hardness distribution is independent, the two curves is the weight station. Effective depth of hardening in the big O40mm area, with different ways of quenching hardening depth reached HV550 is completely the same base,[link widoczny dla zalogowanych], and this depth corresponds to the carbon concentration of 0.45; Organization (carburizing followed by air cooling) for Layer hypereutectoid and the eutectoid layer Restraints degrees. Fourth, the discussion based on test results, we can still use the optical method to control the quality of it, carburizing depth is still touch-type 0 for the (soon to Quine to the provisions of the depth of the carbon concentration of 0.45%, generation model). Of 20CrMnMo CARBURIZED (module 4) the degree of effective control of the hardness of Restraints formula is: = p x EU where the effective hardening depth (mm); A and the carbon potential of a relevant factor (Table 1): an absolute temperature (K): t a carburizing time (h). Table 1 Effect of different carbon potential (cp A value under the polyester pieces c%) l080l0.90l1.130l1.10 『1.20II30A value l329l365l396l443l446l467 1,3】 【literature on quenching after carburizing temperature on the effective depth of hardening for a more in-depth study of carburized gears can learn, but to fully consider the specific requirements of its geometric shape and specificity. We believe that 20CrMnMo CARBURIZED, has good hardenability and hardenability, its small modulus gear tooth width are not big, no significant effect on the hardenability of the carburized layer to ensure the level of sub-eutectoid End barrier under the conditions of austenite hardening,[link widoczny dla zalogowanych], not sets of gear at the pitch circle a significant impact on the effective depth of hardening. R we confirmed that test ride. Tooth root of the effective hardening depth of the body by the cross section by the quality of gear, a total depth of the effective hardening depth and carburizing are shallower (generally more shallow pitch at 0I2 ~ 0.20mm),[link widoczny dla zalogowanych], on the requirements of a high resistance to tooth root bending strength or broken gear tooth failure, care should be take into account this difference. Literature f4_ test results also show that the microstructure of carbon concentration at the festival won the existence of effective degree of hardening of Restraints good correlation. Visible, 20CrMnMo steel carburized gear L-state relationship is common that we can use their correspondence, from the traditional indirect method to control the microstructure and the concentration of touch with the modified model to determine carburizing carburizing process parameters to ensure Gear heat treatment quality. . V. Conclusion 1.20CrMnMo carburized steel gear means only the surface layer is less than O40mm hardness distribution impact on the effective hardening depth of no effect: 2. Module 4 20CrMnMo effective hardening depth of steel and 0.45% carbon concentration carburizing l cold air over adding eutectoid eutectoid layer depth has a good correspondence between {3. The carbon concentration and effective case depth of the relationship between the modified model of the carbon concentration can still be used indirectly to control the phase plate heat transfer l volume, determine the process parameters during carburizing. 【Reference】 J Su Jian Wo infiltration incident in a hardened layer probe degree of technical control \1989,[link widoczny dla zalogowanych], 【9) 【2】 Zhao Zhendong. Carburizing algae Model of Export Xiamen application \\forging forging CAD in the calculation of the volume, the calculation of derived common sting-type, and the preparation of the BASIC program. It can also be used independently to calculate the volume of such forged disobedient. Key words What I fish I twist forging,[link widoczny dla zalogowanych], CAD, volume calculation TheMethodofVolumeCalculationinRotaryForgingCADLiuYongbiao [Abstract] Thispaperintroducesthemethodofvolumeculculationinrc ~ ryforgingCADandd.rivesthecurrcntformulas Ⅱ dworksouttheprogrammeinBASICItalsocanbeindependflyusedtocalculatethevolume. fr. taryf0rg.i \
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air jordans Development of refined steel productio
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