阅读说明：本技术 一种铸铁制品专用的气体氮碳氧qpq多元复合共渗炉 (Special gas nitrogen carbon oxygen QPQ multi-component composite co-permeation furnace for cast iron products ) 是由 顾海军 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种铸铁制品专用的气体氮碳氧QPQ多元复合共渗炉,包括滴灌组件、升降组件、共渗炉和炉外桶；所述炉外桶中心设置在与共渗炉相匹配的加热腔,所述共渗炉设置在加热腔中,所述滴灌组件设置的端部与共渗炉连接；所述升降组件与共渗炉的炉盖连接；所述滴灌组件包括溶剂桶、液体流量计、第一支撑架、第二支撑架和多头针式滴入器；所述溶剂桶设置在第一支撑架上,所述溶剂桶与液体流量剂通过管道进行连通,所述液体流量计设置在第二支撑架上；所述溶剂桶的溶液出口位置设置有第一开关,所述液体流量计的出口位置设置有第二开关；本发明通过本装置对共渗炉进行操作时,更加的精准,并且更加的安全和高效；既保证了工艺要求,有节省了时间。(The invention discloses a special gas nitrogen carbon oxygen QPQ multi-component composite co-permeation furnace for cast iron products, which comprises a drip irrigation assembly, a lifting assembly, a co-permeation furnace and an outer furnace barrel, wherein the drip irrigation assembly is arranged on the outer furnace barrel; the center of the outer barrel of the furnace is arranged in a heating cavity matched with the co-infiltration furnace, the co-infiltration furnace is arranged in the heating cavity, and the end part of the drip irrigation assembly is connected with the co-infiltration furnace; the lifting assembly is connected with a furnace cover of the co-infiltration furnace; the drip irrigation assembly comprises a solvent barrel, a liquid flowmeter, a first support frame, a second support frame and a multi-head needle type drip device; the solvent barrel is arranged on the first support frame, the solvent barrel is communicated with the liquid flow agent through a pipeline, and the liquid flow meter is arranged on the second support frame; a first switch is arranged at the position of a solution outlet of the solvent barrel, and a second switch is arranged at the position of an outlet of the liquid flowmeter; when the device is used for operating the co-permeation furnace, the operation is more accurate, safer and more efficient; not only ensures the process requirement, but also saves the time.)

1. The utility model provides a dedicated gaseous nitrogen carbon oxygen QPQ complex of cast iron goods oozes stove altogether which characterized in that: comprises a drip irrigation component, a lifting component, a co-infiltration furnace and an outer furnace barrel; the center of the outer barrel of the furnace is arranged in a heating cavity matched with the co-infiltration furnace, the co-infiltration furnace is arranged in the heating cavity, and the end part of the drip irrigation assembly is connected with the co-infiltration furnace; the lifting assembly is connected with a furnace cover of the co-infiltration furnace.

2. The special gaseous nitrogen carbon oxygen QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 1, wherein: the drip irrigation assembly comprises a solvent barrel, a liquid flowmeter, a first support frame, a second support frame and a multi-head needle type drip device; the solvent barrel is arranged on the first support frame, the solvent barrel is communicated with the liquid flow agent through a pipeline, and the liquid flow meter is arranged on the second support frame; a first switch is arranged at the position of a solution outlet of the solvent barrel, and a second switch is arranged at the position of an outlet of the liquid flowmeter.

3. The special gaseous nitrogen carbon oxygen QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 1, wherein: the liquid flowmeter comprises a flow tube, a ventilation assembly and a scale bar; the solvent barrel is communicated with the flow tubes, the number of the flow tubes is matched with that of the solvent barrel, and the ventilation assembly is arranged at the top of the flow tubes.

4. The special gaseous nitrogen carbon oxygen QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 1, wherein: the multi-head needle type drip chamber comprises a first mixer, a second mixer, a main pipeline, an observation window, a drip irrigation head and an auxiliary supporting rod; the first mixer and the second mixer are symmetrically arranged at the top of the main pipeline, the observation window is arranged on the side wall of the main pipeline, the auxiliary support rod is arranged on the side wall of the main pipeline, the drip irrigation head is arranged at the bottom of the main pipeline, and the drip irrigation head is communicated with the furnace cover; the bottom of first blender and second blender converges through 3 siphunculuss and trunk line, be provided with the third switch on first blender and the second blender.

5. The special gaseous nitrogen carbon oxygen QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 4, wherein: the first mixer and the second mixer are arranged identically, and the first mixer comprises an access pipe, a mixing cavity, a transparent disc and a stirrer; the access pipe is symmetrically arranged on the mixing cavity and communicated with the flow pipe through the access pipe, the stirrer is arranged in the mixing cavity, and the transparent disc is arranged on the mixing cavity.

6. The special gaseous nitrocarb-oxygan QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 1 or 2 or 3 or 5, wherein: the horizontal height positions of the solvent barrel, the liquid flowmeter and the multi-head needle type drip chamber are sequentially lowered, and the height position of the first support frame is higher than that of the second support frame.

7. The special gaseous nitrocarb-oxygan QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 1 or 2 or 3 or 5, wherein: the lifting assembly comprises a hydraulic station, a hydraulic synchronous distribution valve and a jack; the hydraulic station and the hydraulic synchronous distribution valve are arranged at the outer side of the co-permeation furnace, the jacks are arranged on the ring surface of the top of the outer barrel of the furnace, and a plurality of jacks are uniformly arranged on the ring surface of the top of the outer barrel of the furnace; the furnace cover is provided with a furnace cover pressing plate, the furnace cover pressing plate is fixedly connected with the furnace cover, the furnace cover pressing plate is provided with a connecting through hole, the annular surface of the top of the outer barrel of the furnace is provided with connecting screw rods, the number and the positions of the connecting screw rods are matched with those of the jacks, the connecting screw rods are perpendicular to the outer barrel of the furnace, and the bottom ends of the connecting screw rods are fixedly connected with the outer barrel of the furnace.

8. The special gaseous nitrogen carbon oxygen QPQ multi-component co-cementation furnace for cast iron products as claimed in claim 7, wherein: the number of the connecting screw rods is not less than that of the furnace cover pressing plates, the connecting screw rods penetrate through the connecting through holes and are connected by nuts, the bottom end of the jack is fixedly connected with the annular surface of the top of the outer barrel of the furnace, and the output surface of the jack is in contact with the ground of the furnace cover pressing plates; the hydraulic station is connected with a hydraulic synchronous distribution valve, and the hydraulic synchronous distribution valve is respectively connected with each jack.

9. The control method of the special gaseous nitrogen carbon oxygen QPQ multi-component composite cementation furnace for the cast iron product according to claim 7 is characterized by comprising the following steps of:

respectively adding a nitrogen source A base solution, a nitrogen source B base solution, a carbon source and an oxygen source into each solvent barrel; opening a first switch of each solvent barrel to convey each medicament into the corresponding flow tube;

opening a second switch as required, accurately conveying the medicament to be mixed and reacted into the mixing cavity through the scales on the flow tube, opening the stirrer, observing the reaction degree of the stirred medicament in the transparent cover, and finishing the reaction; lifting the furnace cover through a jack, placing a workpiece in advance, locking the furnace cover of the box cover through a screw cap on a connecting screw rod, opening the heating cavity, and preheating the co-infiltration furnace to 530-580 ℃;

and step three, opening a third switch, collecting the medicaments in the first mixer and/or the second mixer in the main pipeline, dripping the medicaments into the workpiece in the furnace cover, controlling the dripping speed through the air leakage assembly, gasifying the dripped medicaments at high temperature, fully contacting the gasified medicaments with the surface of the workpiece to ensure that the reaction is more uniform, and determining the thickness of the oxide layer by controlling the dripping speed of the medicaments.

10. The method for controlling the gaseous nitrogen carbon oxygen QPQ multi-component composite cementation furnace special for cast iron products as claimed in claim 9, wherein in step one, the agents are ethanol, rare earth oxide solution, triethanolamine and citric acid; in the second step, the second switch of the flow tube where the nitrogen source A base liquid and the nitrogen source B base liquid are located is started, the nitrogen source A base liquid and the nitrogen source B base liquid are mixed in the mixing cavity to generate a nitrogen source, then the third switch is started, the nitrogen source is dripped onto the workpiece, nitrides are formed on the surface of the workpiece, and then the workpiece is subjected to oxidation treatment.

Technical Field

The invention relates to the technical field of workpiece surface treatment and processing, in particular to a special gas nitrogen carbon oxygen QPQ multi-component composite cementation furnace for cast iron products.

Background

The QPQ (Quench-Polish-Quench, quenching-polishing-quenching) technology is essentially low-temperature salt bath nitriding + salt bath oxidation or low-temperature salt bath nitrocarburizing + salt bath oxidation, is a metal part surface modification technology, and has the advantages of high corrosion resistance, high wear resistance and micro deformation. The surface of the workpiece treated by the QPQ technology is an Fe3O4 oxide film, the corrosion resistance of the workpiece is far higher than the level of surface protection technologies such as chromium plating, nickel plating and the like, and medium carbon steel can replace stainless steel in many fields after being treated by the QPQ technology. Meanwhile, the QPQ process can replace the traditional corrosion-resistant processes such as blackening, phosphorization, nickel plating and the like. At present, the high corrosion resistance of the QPQ technology causes great attention to relevant industries, especially industries with serious corrosion problems such as petroleum, chemical engineering and the like.

At present gaseous nitrogenize of prior art, adopt ordinary resistance furnace mostly, the compound oozing altogether of nitrogen carbon oxygen is difficult to realize to drop, nitriding methods such as logical ammonia, can't guarantee that the cladding material is even, and the thickness of cladding material can't be controlled and control to switch furnace locking pressurize mode adopts manual operation mostly, hardly masters the balance and the pressure balance of bell.

Disclosure of Invention

The invention aims to: aiming at the problems, the utility model provides a dedicated gaseous nitrogen carbon oxygen QPQ multiple compound cementation stove of cast iron goods, it is difficult to realize nitrogen carbon oxygen multiple compound cementation among the prior art to have solved, can't guarantee that the cladding material is even, and the thickness of cladding material can't be controlled and control to switch furnace locking pressurize mode adopts manual operation mostly, hardly masters the balanced problem with the pressure of bell.

The scheme is realized as follows:

a special gaseous nitrogen carbon oxygen QPQ multi-component combined cementation furnace for cast iron products comprises: comprises a drip irrigation component, a lifting component, a co-infiltration furnace and an outer furnace barrel; the center of the outer barrel of the furnace is arranged in a heating cavity matched with the co-infiltration furnace, the co-infiltration furnace is arranged in the heating cavity, and the end part of the drip irrigation assembly is connected with the co-infiltration furnace; the lifting assembly is connected with a furnace cover of the co-infiltration furnace.

Preferably, the drip irrigation assembly comprises a solvent barrel, a liquid flow meter, a first support frame, a second support frame and a multi-head needle type drip chamber; the solvent barrel is arranged on the first support frame, the solvent barrel is communicated with the liquid flow agent through a pipeline, and the liquid flow meter is arranged on the second support frame; a first switch is arranged at the position of a solution outlet of the solvent barrel, and a second switch is arranged at the position of an outlet of the liquid flowmeter.

Preferably, the liquid flow meter comprises a flow tube, a gas permeable component and a scale bar; the solvent barrel is communicated with the flow tubes, the number of the flow tubes is matched with that of the solvent barrel, and the ventilation assembly is arranged at the top of the flow tubes.

Preferably, the multi-head needle type drip chamber comprises a first mixer, a second mixer, a main pipeline, an observation window, a drip irrigation head and an auxiliary support rod; the first mixer and the second mixer are symmetrically arranged at the top of the main pipeline, the observation window is arranged on the side wall of the main pipeline, the auxiliary support rod is arranged on the side wall of the main pipeline, the drip irrigation head is arranged at the bottom of the main pipeline, and the drip irrigation head is communicated with the furnace cover; the bottom of first blender and second blender converges through 3 siphunculuss and trunk line, be provided with the third switch on first blender and the second blender.

Preferably, the first mixer and the second mixer are arranged the same, and the first mixer comprises an access pipe, a mixing cavity, a transparent disc and a stirrer; the access pipe is symmetrically arranged on the mixing cavity and communicated with the flow pipe through the access pipe, the stirrer is arranged in the mixing cavity, and the transparent disc is arranged on the mixing cavity.

Preferably, the horizontal height positions of the solvent barrel, the liquid flowmeter and the multi-head needle type drip chamber are sequentially lowered, and the height position of the first support frame is higher than that of the second support frame.

Preferably, the lifting assembly comprises a hydraulic station, a hydraulic synchronous distribution valve and a jack; the hydraulic station and the hydraulic synchronous distribution valve are arranged at the outer side of the co-permeation furnace, the jacks are arranged on the ring surface of the top of the outer barrel of the furnace, and a plurality of jacks are uniformly arranged on the ring surface of the top of the outer barrel of the furnace; the furnace cover is provided with a furnace cover pressing plate, the furnace cover pressing plate is fixedly connected with the furnace cover, the furnace cover pressing plate is provided with a connecting through hole, the annular surface of the top of the external furnace barrel is provided with connecting screw rods, the number and the positions of the connecting screw rods are matched with those of the jacks, the connecting screw rods are arranged perpendicular to the external furnace barrel, and the bottom ends of the connecting screw rods are fixedly connected with the external furnace barrel;

preferably, the number of the connecting screw rods is not less than that of the furnace cover pressing plates, the connecting screw rods penetrate through the connecting through holes and are connected by nuts, the bottom end of the jack is fixedly connected with the annular surface of the top of the outer barrel of the furnace, and the output surface of the jack is in contact with the ground of the furnace cover pressing plates; the hydraulic station is connected with a hydraulic synchronous distribution valve, and the hydraulic synchronous distribution valve is respectively connected with each jack.

The scheme provides a control method of a special gas nitrogen-carbon-oxygen QPQ multi-element composite cementation furnace for cast iron products, which is characterized by comprising the following steps of:

respectively adding a nitrogen source A base solution, a nitrogen source B base solution, a carbon source and an oxygen source into each solvent barrel; opening a first switch of each solvent barrel to convey each medicament into the corresponding flow tube;

opening a second switch as required, accurately conveying the medicament to be mixed and reacted into the mixing cavity through the scales on the flow tube, opening the stirrer, observing the reaction degree of the stirred medicament in the transparent cover, and finishing the reaction; lifting the furnace cover through a jack, placing a workpiece in advance, locking the furnace cover of the box cover through a screw cap on a connecting screw rod, opening the heating cavity, and preheating the co-infiltration furnace to 530-580 ℃;

and step three, opening a third switch, collecting the medicaments in the first mixer and/or the second mixer in the main pipeline, dripping the medicaments into the workpiece in the furnace cover, controlling the dripping speed through the air leakage assembly, gasifying the dripped medicaments at high temperature, fully contacting the gasified medicaments with the surface of the workpiece to ensure that the reaction is more uniform, and determining the thickness of the oxide layer by controlling the dripping speed of the medicaments.

In the first step, the medicament is ethanol, rare earth oxide solution, triethanolamine and citric acid; in the second step, the second switch of the flow tube where the nitrogen source A base liquid and the nitrogen source B base liquid are located is started, the nitrogen source A base liquid and the nitrogen source B base liquid are mixed in the mixing cavity to generate a nitrogen source, then the third switch is started, the nitrogen source is dripped onto the workpiece, nitrides are formed on the surface of the workpiece, and then the workpiece is subjected to oxidation treatment.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. on one hand, the device is more accurate, safer and more efficient when the co-infiltration furnace is operated; the device has the advantages that the process requirement is guaranteed, the time is saved, the labor intensity of workers is reduced, the production efficiency is improved, on the other hand, the nitrogen-carbon-oxygen drop is subjected to multi-component co-permeation in a mode of implementing dropping in by stages and in batches through the combination of a plurality of switches and devices of the device, the coating is uniform, and the thickness is convenient to control.

2. According to the invention, the solvent barrel, the liquid flowmeter and the multi-head needle type dropping device are arranged at different heights, so that the medicament can automatically flow by means of self potential energy difference without being driven by an additional pump set, the overall cost is reduced, and the structure of the device is simpler.

3. When the device is used, the hydraulic synchronous distribution valve is controlled to synchronously lift the jack, the furnace cover is lifted and placed into a workpiece, then pressure relief is carried out, the jack is lowered, the furnace cover and the furnace barrel at the lower end part of the furnace cover are closed by means of the self gravity of the roadside, at the moment, the furnace cover and the furnace barrel are fastened and locked by the nut on the connecting screw rod, and the sealing performance of the integral co-infiltration furnace is ensured; the pressure is uniformly distributed to the jacks through the hydraulic distribution valves, so that the output pressure of each jack is balanced, and the furnace cover can be lifted more stably, efficiently and safely.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a block diagram of the liquid flow meter of the present invention;

FIG. 3 is a structural view of the furnace lid platen and the jack in the present invention;

FIG. 4 is a block diagram of a multiple needle dispenser of the present invention;

the labels in the figure are: 1. a drip irrigation assembly; 2. a lifting assembly; 3. a co-cementation furnace; 4. an outer furnace barrel; 5. a heating cavity; 101. a solvent barrel; 102. a liquid flow meter; 103. a first support frame; 104. a second support frame; 105. a multi-head needle type dropping device; 106. a first switch; 1021. a flow tube; 1022. a venting assembly; 1023. a scale bar; 1024. a second switch; 1051. a first mixer; 1052. a second mixer; 1053. a main pipeline; 1054. an observation window; 1055. a drip irrigation head; 1056. an auxiliary support bar; 1057. a third switch; 1058. an access pipe; 1059. a mixing chamber; 1060. a transparent disc; 1061. a stirrer; 201. a hydraulic station; 202. a hydraulic synchronous distribution valve; 203. a jack; 204. connecting a screw rod; 205. a nut; 301. a furnace cover; 302. a furnace barrel; 303. a seal ring; 304. a gas release device; 305. a furnace cover pressing plate; 501. heating the strip; 502. and (7) an insulating layer.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.