Vacuum low-pressure carburizing process for shaft gear parts
A vacuum low-pressure carburizing and process technology, applied in metal material coating process, furnace type, manufacturing tools, etc., can solve problems such as large deformation of keyway and tooth shape, eliminate machining stress, improve surface carburizing effect, The effect of reducing the amount of deformation
Pending Publication Date: 2022-04-08
常州新区河海热处理工程有限公司
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Abstract
The invention discloses a vacuum low-pressure carburizing process for shaft gear parts, and belongs to the technical field of heat treatment. The vacuum low-pressure carburizing process for the shaft-gear parts sequentially comprises the temperature rising stage, the carburizing stage and the quenching stage, the temperature rises to the carburizing process temperature in a stepped temperature rising and heat preservation mode in the temperature rising stage, the machining stress of the shaft-gear parts can be eliminated, and the deformation amount of the parts in the heating process is reduced; the carburizing deformation of the shaft gear part reaches 0.005-0.015 mm, so that the problem of distortion generated in the carburizing process of the shaft gear part is effectively solved; moreover, in the vacuum low-pressure intense carburizing stage, acetylene-nitrogen alternating pulses are used as carburizing atmosphere, waste gas generated in the furnace is exhausted through nitrogen, the effective carburizing layer depth and the surface carbon content are controlled more accurately, and the shaft gear part surface carburizing effect is improved.
Application Domain
Solid state diffusion coatingFurnace types +1
Technology Topic
CarburizingHeat conservation +4
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PUM
Property | Measurement | Unit |
Surface hardness | 80.1 ~ 82.5 |
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