Preparation device of anti-hydrogen induction forge piece for high-pressure hydrogen storage container

Abstract

The utility model belongs to the technical field of forge piece manufacturing, and particularly relates to a manufacturing device of an anti-hydrogen induction forge piece for a high-pressure hydrogen storage container. Comprising a smelting unit, a forging unit, a cooling unit, a heat treatment unit and an inspection unit which are connected in sequence, and materials are conveyed among the units through a conveying roller way; the smelting unit comprises an electric furnace smelting device, a ladle refining furnace and a vacuum degassing device which are connected in sequence; the forging unit comprises a first natural gas heating furnace, a composite forging machine and a second natural gas heating furnace which are sequentially connected; the heat treatment unit comprises a normalizing furnace, a quenching bath and a tempering furnace which are connected in sequence. Through ordered connection and material conveying design of all the functional units, full-chain automatic production from raw material smelting to finished product inspection is achieved, the preparation efficiency and the product quality are improved, meanwhile, through comprehensive coverage of the waste gas treatment unit, it is ensured that the production process is safe and environmentally friendly, and the production cost is reduced. The method is suitable for large-scale preparation of the hydrogen-induction-resistant forge piece for the high-pressure hydrogen storage container.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of forging manufacturing technology, and specifically relates to a preparation device of hydrogen-induced resistance forgings for high-pressure hydrogen storage containers. BACKGROUND

[0002] As the core equipment of hydrogen energy storage and transportation, the preparation device of forgings of high-pressure hydrogen storage containers needs to meet the requirements of high strength, high hydrogen embrittlement resistance and high reliability. At present, the traditional forging preparation device has the following shortcomings: the material transmission efficiency between each production unit is low, resulting in discontinuous production process; the equipment functions of smelting, forging and heat treatment links are single, and it is difficult to optimize the material performance in coordination; the cooling process lacks targeted design and is prone to residual stress; in addition, the exhaust gas emission treatment in the smelting and heat treatment process is not perfect, and there is a risk of environmental pollution. In the prior art, the equipment integration is low, the automation level is insufficient, and there is a lack of special preparation device for hydrogen-induced resistance performance, which is difficult to meet the high-standard requirements of high-pressure hydrogen storage container forgings. Therefore, an integrated, efficient and environmentally friendly special preparation device is needed to improve the forging quality and production efficiency. SUMMARY

[0003] In view of the above shortcomings in the prior art, the purpose of the utility model is to provide a preparation device of hydrogen-induced resistance forgings for high-pressure hydrogen storage containers, which realizes full-chain automatic production from raw material smelting to finished product inspection through the orderly connection and material transmission design between each functional unit, not only improves the preparation efficiency and product quality, but also ensures the safety and environmental protection of the production process through the comprehensive coverage of the exhaust gas treatment unit, and is suitable for the large-scale preparation of hydrogen-induced resistance forgings for high-pressure hydrogen storage containers.

[0004] The utility model is implemented by adopting the following technical solutions:

[0005] The preparation device of hydrogen-induced resistance forgings for high-pressure hydrogen storage containers comprises a smelting unit, a forging unit, a cooling unit, a heat treatment unit and an inspection unit connected in sequence, and the material transmission between each unit is realized through a conveying roller.

[0006] The smelting unit comprises an electric furnace smelting device, a ladle refining furnace and a vacuum degassing device connected in sequence.

[0007] The forging unit comprises a first natural gas heating furnace, a composite forging machine and a second natural gas heating furnace connected in sequence.

[0008] The heat treatment unit comprises a normalizing furnace, a quenching pool and a tempering furnace connected in sequence.

[0009] The cooling unit is a sand cooling pool.

[0010] The inspection unit comprises an ultrasonic detection table.

[0011] The preparation device for the hydrogen-induced cracking resistant forged piece for high-pressure hydrogen storage containers further comprises a waste gas treatment unit.

[0012] The preparation device for the hydrogen-induced cracking resistant forged piece for high-pressure hydrogen storage containers further comprises a control system electrically connected with each unit.

[0013] The waste gas treatment unit comprises a bag-type dust collector and a wet scrubber arranged in series.

[0014] The inlet of the waste gas treatment unit is connected with the waste gas discharge ports of the smelting unit, the forging unit and the heat treatment unit respectively.

[0015] The preparation device for the hydrogen-induced cracking resistant forged piece for high-pressure hydrogen storage containers has the following working principle:

[0016] After the raw materials are melted by the electric furnace smelting device of the smelting unit, the melted materials are sequentially sent to a ladle refining furnace and a vacuum degassing device for composition optimization and gas removal to improve the purity of the materials. Then, the molten steel billets are conveyed to the forging unit by a conveying roller, are uniformly heated to a forging temperature by a first natural gas heating furnace, are formed by a multi-directional forging press of a compound forging machine, and are subjected to an intermittent heat preservation process in a second natural gas heating furnace to promote internal organization self-repair. The forged piece after forging is slowly cooled in a sand cooling pool of the cooling unit to eliminate residual stress. The forged piece after cooling is sent to the heat treatment unit, is sequentially sent to a normalizing furnace to refine grains, a quenching pool to rapidly strengthen and a tempering furnace to stabilize the organization to avoid brittle defects. Finally, the forged piece is subjected to internal defect screening by an ultrasonic detection table in the inspection unit to ensure that the hydrogen-induced cracking resistance meets the standards. In the whole process, the waste gas treatment unit performs multi-stage purification on the waste gas generated in the smelting, forging and heat treatment links, and the control system is used to real-time control the process parameters of each unit to ensure the continuity and environmental protection of production. Through the automatic connection of the above process, the efficient and stable preparation of the hydrogen-induced cracking resistant forged piece is realized.

[0017] Compared with the prior art, the preparation device for the hydrogen-induced cracking resistant forged piece for high-pressure hydrogen storage containers has the following advantages:

[0018] The apparatus for preparing hydrogen-inducible forgings for high-pressure hydrogen storage containers described in this invention integrates smelting, forging, cooling, heat treatment, and inspection units, combined with conveyor rollers to achieve continuous production, significantly improving the synergy and efficiency of the process flow. In the smelting stage, multi-stage refining and vacuum degassing technologies optimize material purity. The forging stage employs a dual-heating furnace and composite forging process to ensure dense microstructure, combined with precise slow cooling in a sand-cooling pool to eliminate internal residual stress. The heat treatment unit enhances mechanical properties and avoids brittle defects through controlled normalizing, quenching, and tempering processes. An integrated ultrasonic testing unit strictly controls internal defects in the forgings, ensuring that the hydrogen-inducible forging performance meets standards. Simultaneously, the introduction of a waste gas treatment system and automated control technology achieves environmental purification of production waste gas and precise control of process parameters, adapting to the large-scale production needs of forgings of different specifications, significantly improving the reliability and service life of high-pressure hydrogen storage containers, and meeting the industry's stringent requirements for high-strength, hydrogen-resistant forgings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to the present invention;

[0020] In the diagram: 1. Electric furnace smelting unit; 2. Ladle refining furnace; 3. Vacuum degassing unit; 4. First natural gas heating furnace; 5. Composite forging machine; 6. Second natural gas heating furnace; 7. Normalizing furnace; 8. Quenching pool; 9. Tempering furnace; 10. Sand cooling pool; 11. Ultrasonic testing table; 12. Bag filter; 13. Wet scrubber. Detailed Implementation

[0021] To make the objectives and technical solutions of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 As shown, the apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers includes a smelting unit, a forging unit, a cooling unit, a heat treatment unit, and an inspection unit connected in sequence, with material transfer between the units via conveyor rollers.

[0024] The smelting unit includes an electric furnace smelting device 1, a ladle refining furnace 2, and a vacuum degassing device 3 connected in sequence;

[0025] The forging unit includes a first natural gas heating furnace 4, a composite forging machine 5, and a second natural gas heating furnace 6 connected in sequence.

[0026] The heat treatment unit includes a normalizing furnace 7, a quenching tank 8, and a tempering furnace 9 connected in sequence.

[0027] The cooling unit is a sand cooling pool 10.

[0028] The inspection unit comprises an ultrasonic detection table 11.

[0029] The preparation device of the hydrogen-induced cracking resistant forging for high-pressure hydrogen storage containers further comprises a waste gas treatment unit.

[0030] The preparation device of the hydrogen-induced cracking resistant forging for high-pressure hydrogen storage containers further comprises a control system, which is electrically connected with each unit.

[0031] The waste gas treatment unit comprises a bag-type dust collector 12 and a wet scrubber 13 arranged in series.

[0032] The inlet of the waste gas treatment unit is connected with the waste gas discharge ports of the smelting unit, the forging unit and the heat treatment unit respectively.

[0033] The device works as follows:

[0034] 1) Smelting stage: raw materials are sent into the smelting unit through a conveying roller, and are sequentially melted by the electric furnace smelting device 1, desulfurized and dephosphorized by the ladle refining furnace 2, and removed of gas impurities by the vacuum degassing device 3 to obtain high-purity molten steel and cast into a billet. In the smelting unit, the exhaust ports of the electric furnace smelting device 1, the ladle refining furnace 2 and the vacuum degassing device 3 are connected with the inlet of the waste gas treatment unit through pipelines to collect smoke dust and harmful gases generated in the smelting process.

[0035] 2) Forging stage: the billet is sent into the forging unit through a conveying roller, and is heated to a preset temperature by the first natural gas heating furnace 4 and then sent into the composite forging machine 5 for multi-directional forging and forming. During the forging process, the semi-finished forging is subjected to intermittent heat preservation treatment by the second natural gas heating furnace 6 to promote internal organization self-repair. In the forging unit, the combustion exhaust discharge ports of the first natural gas heating furnace 4 and the second natural gas heating furnace 6 are connected with the waste gas treatment unit to treat the exhaust gas generated in the heating process.

[0036] 3) Cooling stage: the forged product is transferred to the sand cooling pool 10 of the cooling unit through a conveying roller, and is slowly cooled in the environment covered with sand to uniformly release internal stress.

[0037] 4) Heat treatment stage: the cooled forging is sent into the heat treatment unit, and is sequentially subjected to grain refinement by the normalizing furnace 7, rapid cooling strengthening by the quenching pool 8, and stabilization of the organization performance by the tempering furnace 9. In the heat treatment unit, the combustion exhaust discharge port of the normalizing furnace 7, the volatile medium discharge port of the quenching pool 8 and the exhaust discharge port of the tempering furnace 9 are connected with the waste gas treatment unit to ensure that the exhaust gas and volatile matter generated in the heat treatment process are purified.

[0038] 5) Inspection stage: the heat-treated forgings are conveyed to the inspection unit by the conveying roller, and the internal defects of the forgings are non-destructively detected by the ultrasonic detection station 11 to screen out products meeting the hydrogen-induced performance standard.

[0039] 6) Waste gas treatment: all waste gas from the smelting unit, forging unit and heat treatment unit is collected by pipeline to the waste gas treatment unit, and is discharged after removing particulate matter by the bag filter 12 and neutralizing acid gas in the wet scrubber 13.

[0040] During the whole process, the control system monitors the temperature, pressure and running state of each unit in real time, automatically adjusts the heating power, cooling speed and waste gas treatment parameters, and ensures the continuity of production and the stability of the process.

Claims

1. An apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers, characterized in that, It includes a smelting unit, a forging unit, a cooling unit, a heat treatment unit, and an inspection unit connected in sequence, with materials transferred between the units via conveyor rollers; The smelting unit includes an electric furnace smelting device (1), a ladle refining furnace (2), and a vacuum degassing device (3) connected in sequence; The forging unit includes a first natural gas heating furnace (4), a composite forging machine (5), and a second natural gas heating furnace (6) connected in sequence. The heat treatment unit includes a normalizing furnace (7), a quenching tank (8), and a tempering furnace (9) connected in sequence.

2. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 1, characterized in that, The cooling unit is a sand cooling pool (10).

3. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 1, characterized in that, The inspection unit includes an ultrasonic testing station (11).

4. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 1, characterized in that, It also includes an exhaust gas treatment unit.

5. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 4, characterized in that, It also includes a control system, which is electrically connected to each unit.

6. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 4, characterized in that, The exhaust gas treatment unit includes a bag filter (12) and a wet scrubber (13) connected in series.

7. The apparatus for preparing hydrogen-resistant forgings for high-pressure hydrogen storage containers according to claim 4, characterized in that, The inlet of the waste gas treatment unit is connected to the waste gas emission outlets of the smelting unit, the forging unit, and the heat treatment unit, respectively.

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