Two-row rare earth continuous gas carburization furnace carburization medium flow rate disc

Abstract

The invention provides a two-row rare earth continuous gas carburization furnace carburization medium flow rate disc, which relates to a two-row rare earth carburization furnace carburization medium flow rate disc and solves the problems that the carbon potential control precision is low, the internal oxidation of a workpiece is easy to be caused, non-martensite tissues can be easily generated onthe surface of the workpiece, the service life of the workpiece is reduced, the carburization medium is wasted, and the cost is high. The two-row rare earth continuous gas carburization furnace carburization medium flow rate disc consists of a gas pipeline and a carburization medium dripping pipeline, wherein an electromagnetic valve and a gas and liquid flow rate meter are arranged on the gas pipeline and the carburization medium dripping pipeline. The two-row rare earth continuous gas carburization furnace carburization medium flow rate disc has the advantages that the carbon potential control precision is high, the carbon black is not easy to generate, the operation cost is low, methanol and acetic ether can be saved, the carburization medium cost is reduced by 10 to 20 percent, the surface hardness of a gear is improved by 2 to 3HRC, the deformation of the gear is reduced, the press quenching quality of a driven spiral bevel gear is improved, and the service life of the gear is prolonged. In addition, the defect that an ammonia gas and formamide medium carburization medium pipeline is easy to leak is overcome.

Description

technical field [0001] The invention relates to a flow plate of a double row carburizing furnace. Specifically, it relates to a carburizing medium flow plate of a double-row rare earth continuous gas carburizing furnace. Background technique [0002] At present, when the carburizing medium in the flow plate of the existing double-row carburizing furnace adopts the manual dripping method, the carbon potential control method is to input air into the furnace. On the flow plate, a solenoid valve is installed on the air pipeline system of the sections of II, III, IV, V and the insulation room. On the flow plate of the double-row carburizing furnace, the air flows from the flow plate The branch air line of the furnace is merged into a pipeline through the internal thread cock valve, air flow meter, solenoid valve and ball valve, and the bypass pipeline, which is connected with the pipeline of the corresponding section above each section of the flow plate, and enters each section ...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of low carbon potential control accuracy of the existing flow plate, easy to cause internal oxidation of the workpiece, non-martensitic structure on the surface of the workpiece, reducing the service life of the workpiece, easy leakage of ammonia gas and carburizing medium, and high cost. The problem is to provide a double-row rare earth continuous gas carburizing furnace carburizing medium flow plate, so that the single drip method can be changed into two carburizing methods of drip injection and nitrogen + methanol, propane gas, and rare earth methanol to solve this problem The specific technical scheme is as follows:

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