The gear precision of the gear shaft is 10 and the machining modulus is 1.8, The structure of gear shaft after normalizing is: F+S for hypoeutectoid steel, S for eutectoid steel, S+ secondary cementite for eutectoid steel, and it is discontinuous.
When quenching and tempering, the whole section of the workpiece is required to be thoroughly quenched, so that the workpiece can get fine needle-like quenched martensite.
Determine tempering temperature
In curves of different carbon content and tempering temperature (Heat Treatment of Steel, Hu Guangli and Xie Xiwen, Northwestern Polytechnical University Press). The curve band with carbon content of 0.4~0.5% was found, and then HRC=35~40 was found on the ordinate. The point where the curve band intersected was the heating temperature, which was about 480℃
Product specification:
modulus | 1.79 |
number of teeth | 85 |
tooth depth | 9.39 |
tooth width | (44±0.1) |
weight | 1.2kg-2.0kg |
material | 8620H |
appearance | circle |
gear surface hardness | 58-63 |
tooth line shape | involute |
application | engineering machinery |
product description: | engineering core components |
accuracy of gear | 8-10 |
processing module | 1.5-1.8 |
gear type | involute external spline |
materials | low carbon alloy steel |
surface treatment | carburizing and quenching |
processing technic | forging+machine work+heat treatment |
fabricating machinery | mechanical press+digital controlled lathe+machining center |
checkout equipment | Klingberg Gear Btesting Center+Zeiss CMM+Mitoyo contourgraph |
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external involute spline |
involute shaft |
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