CN219174597U

CN219174597U - Atmosphere furnace ferric oxide elimination control system

Info

Publication number: CN219174597U
Application number: CN202222990210.2U
Authority: CN
Inventors: 吕跃鹏; 贾永发; 郑铁军; 张虎; 李海峰
Original assignee: BAICHENG ZHONGYI PRECISION FORGING CO LTD
Current assignee: BAICHENG ZHONGYI PRECISION FORGING CO LTD
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-06-13
Anticipated expiration: 2032-11-10

Abstract

The utility model relates to an atmosphere furnace ferric oxide elimination control system. Comprising the following steps: the device comprises an atmosphere furnace body, a heater, a circulating water cavity, a circulating fan, a slow cooling fan, a nitrogen inlet, a pure water storage tank, a pure water output pipe, a water pump, a flow regulating valve and a branching pipe head, wherein the pure water storage tank is connected with a pure water input port of the branching pipe head through the pure water output pipe; the utility model has the advantages that: by adding the iron oxide elimination control system for injecting pure water, the prior atmosphere furnace performs pre-oxidation treatment by injecting pure water on the basis of tempering heat treatment, thereby achieving the purpose of uniform oxidation of the surface of the workpiece, improving the oxidation effect and realizing the purpose of uniform oxide film on the surface of the workpiece.

Description

Atmosphere furnace ferric oxide elimination control system

Technical Field

The utility model relates to the technical field of surface treatment of engine connecting rods, in particular to an atmosphere furnace iron oxide elimination control system for an engine connecting rod.

Background

The atmosphere furnace is characterized by that under a certain defined temp., a manual preparation atmosphere with a certain composition is introduced into the furnace so as to attain the goal of a certain heat treatment, such as gas carburizing, carbonitriding, bright quenching, annealing and normalizing, etc..

The customer needs to be subjected to cold press shaping treatment in order to improve the quality of the connecting rod material. However, the connecting rod after cold pressing treatment needs tempering and stress-relieving heat treatment because internal stress is generated by local deformation, but tempering is carried out by using the conventional common tempering furnace, the surface is often oxidized due to temperature reasons, and after the connecting rod is placed into a charging basket for a period of time, the problem of poor oxidation effect often occurs on the surfaces of two sides of a workpiece.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to provide an atmosphere furnace iron oxide elimination control system for introducing steam to make the oxidation before the control system ensure that the oxidation degree of each workpiece is uniform, so as to overcome the defects in the prior art.

The utility model provides an atmosphere furnace ferric oxide elimination control system, which comprises: the atmosphere stove body, install the heater in the atmosphere stove body, install the circulation water cavity between atmosphere stove body and heater, install the circulation fan in the heater, install the slow cooling fan on the atmosphere stove body, install on the atmosphere stove body and stretch into the nitrogen gas in the calcination cavity and add the mouth, the improvement of doing is, still include: pure water holding vessel, pure water output tube, water pump, flow control valve and separated time tube head, the separated time tube head comprises two input ports and an output port of an organic whole connection, two the input port is pure water input port and nitrogen gas input port respectively, the pure water holding vessel passes through pure water output tube and the pure water input port connection of separated time tube head, the nitrogen gas of separated time tube head inserts the entry and is connected with atmosphere furnace body from the nitrogen gas circulating pipe of taking, the output port of separated time tube head is connected with atmosphere furnace body on the nitrogen gas inlet, water pump, flow control valve are installed on pure water output tube in proper order, the water pump is used for carrying pure water holding vessel to the separated time tube head through pure water output tube in, flow control valve is used for controlling the velocity of flow in the pure water output tube.

Preferably, the water pump and the flow regulating valve are connected with a ddc controller through wires, and the ddc controller is connected with a control panel of the atmosphere furnace body through wires.

The utility model has the advantages and positive effects that:

1. according to the utility model, the iron oxide elimination control system for injecting pure water is added, so that on the basis of the existing tempering heat treatment of the atmosphere furnace, the pure water (changed into water vapor after reaching the atmosphere furnace) is injected for pre-oxidation treatment, and the purpose of uniform oxidation of the surface of the workpiece is achieved, thereby improving the oxidation effect and realizing the purpose of uniform oxidation film on the surface of the workpiece.

Drawings

Other objects and attainments together with a more complete understanding of the utility model will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:

FIG. 1 is a schematic view of an atmosphere furnace according to the prior art;

FIG. 2 is a top view of a prior art atmosphere furnace configuration;

FIG. 3 is a schematic diagram of an iron oxide abatement control system in accordance with an embodiment of the present utility model.

Description of the drawings: the atmosphere furnace comprises an atmosphere furnace body 1, a heater 2, a circulating water cavity 3, a nitrogen gas inlet 4, a pure water storage tank 5, a pure water output pipe 6, a water pump 7, a flow regulating valve 8, a branching pipe head 9, an output port 901, a pure water input port 902 and a nitrogen gas input port 903.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

Fig. 3 shows a schematic overall structure according to an embodiment of the present utility model.

As shown in fig. 3, the atmosphere furnace iron oxide elimination control system provided by the embodiment of the utility model includes: the furnace comprises an atmosphere furnace body 1, a heater 2 arranged in the atmosphere furnace body, a circulating water cavity 3 arranged between the atmosphere furnace body 1 and the heater 2, a circulating fan arranged in the heater 2, a slow cooling fan arranged on the atmosphere furnace body 1, a nitrogen gas inlet 4 arranged on the atmosphere furnace body 1 and extending into a calcination cavity, and an external pure water storage tank 5, a pure water output pipe 6, a water pump 7, a flow regulating valve 8 and a branching pipe head 9. The branching pipe head 9 comprises two input ports and an output port 901 which are integrally connected, the two input ports are respectively a pure water input port 902 and a nitrogen input port 903, the pure water storage tank 5 is connected with the pure water input port 902 of the branching pipe head 9 through a pure water output pipe 6, the nitrogen input port 903 of the branching pipe head 9 is connected with a nitrogen circulation pipe of the atmosphere furnace body 1, the output port 901 of the branching pipe head 9 is connected with the nitrogen input port 4 of the atmosphere furnace body 1, a water pump 7 and a flow regulating valve 8 are sequentially arranged on the pure water output pipe 6, the water pump 7 is used for conveying the pure water storage tank 5 into the branching pipe head 9 through the pure water output pipe 6, and the flow regulating valve 8 is used for controlling the flow rate in the pure water output pipe 6. The water pump 7 and the flow regulating valve 8 are connected with a ddc controller through wires, and the ddc controller is connected with a control panel of the atmosphere furnace body 1 through wires.

In the embodiment, the workpiece after shot blasting is put into a special charging basket for tempering heat treatment; put into the muffle tank with loading fork truck to the charging basket, close the furnace gate and carry out the pre-evacuation, afterwards get into and inject nitrogen gas (purity 99.995%), when the stove internal pressure reaches 1035 mbar, stop the nitrogen charge, begin the heating intensification, when the temperature risees to 500 ℃, start water pump 7, pure water in the pure water holding vessel 5 is carried to branch line tube head 9 through pure water output tube 6, branch line tube head 9 gets into in the jar through nitrogen gas inlet 4, let in water 25 minutes, pure water in the stove becomes steam because of the temperature reasons this moment, the work piece in the muffle tank carries out preceding oxidation under the state of steam, reach the anticorrosive purpose of surface.

Working principle: on the basis of not changing the sealing performance of the shell of the atmosphere furnace body 1, the original nitrogen inlet 4 is utilized to connect a pure water output pipe 6 extending out of a pure water storage tank 5 through a branching pipe head 9, and a nitrogen circulating pipe provided by the atmosphere furnace body 1. The circulation of the compressed air in the atmosphere furnace body 1 can be controlled by the water pump 7 and the flow regulating valve 8 which are installed on the pure water output pipe 6 without changing the nitrogen input structure of the atmosphere furnace body 1.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. An atmosphere furnace iron oxide abatement control system comprising: atmosphere stove body, install the heater in the atmosphere stove body, install the circulation water cavity between atmosphere stove body and heater, install the circulation fan in the heater, install the slow cooling fan on the atmosphere stove body, install on the atmosphere stove body and stretch into the nitrogen gas in the calcination cavity and add the mouth, its characterized in that still includes: pure water holding vessel, pure water output tube, water pump, flow control valve and separated time tube head, the separated time tube head comprises two input ports and an output port of an organic whole connection, two the input port is pure water input port and nitrogen gas input port respectively, the pure water holding vessel passes through pure water output tube and the pure water input port connection of separated time tube head, the nitrogen gas of separated time tube head inserts the entry and is connected with atmosphere furnace body from the nitrogen gas circulating pipe of taking, the output port of separated time tube head is connected with atmosphere furnace body on the nitrogen gas inlet, water pump, flow control valve are installed on pure water output tube in proper order, the water pump is used for carrying pure water holding vessel to the separated time tube head through pure water output tube in, flow control valve is used for controlling the velocity of flow in the pure water output tube.

2. The atmosphere furnace iron oxide elimination control system according to claim 1, wherein the water pump and the flow regulating valve are connected with a ddc controller through a wire, and the ddc controller is connected with a control panel of the atmosphere furnace body through a wire.