CN109594036B - Nitriding equipment based on high stability of air valve and process thereof - Google Patents
Nitriding equipment based on high stability of air valve and process thereof Download PDFInfo
- Publication number
- CN109594036B CN109594036B CN201811640844.7A CN201811640844A CN109594036B CN 109594036 B CN109594036 B CN 109594036B CN 201811640844 A CN201811640844 A CN 201811640844A CN 109594036 B CN109594036 B CN 109594036B
- Authority
- CN
- China
- Prior art keywords
- valve
- reactor
- air
- gas
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
Abstract
The invention relates to the field of valve nitriding, in particular to nitriding equipment based on high stability of a valve and a process thereof, wherein the nitriding equipment based on the high stability of the valve comprises a first conveyor belt, a polishing mechanism, a rack, and a gas storage tank, a drying furnace and a reactor which are sequentially arranged on the rack, and the nitriding process based on the high stability of the valve comprises the following steps: step 1: the first conveyor belt conveys the valve into a drying furnace for baking and heats nitrogen at the same time; step 2: when the temperature of the air valve is baked to 290-grade 310 ℃ and the nitrogen is heated to 390-grade 410 ℃, the air valve and the nitrogen are sent into a reactor for nitriding treatment; and step 3: after nitriding for 35-45min, conveying the valve onto a second conveyor belt; and 4, step 4: the grinding mechanism is used for grinding the valve. When the technical scheme is adopted, the black scale on the surface of the valve can be removed while the stability of the valve is improved.
Description
Technical Field
The invention relates to the field of valve nitriding, in particular to nitriding equipment based on high valve stability and a process thereof.
Background
The valve is used for specially inputting air into the engine and discharging combusted waste gas, and comprises a valve rod and a valve head; because of the high temperature in the engine, the valve is required to have certain wear resistance, fatigue resistance, corrosion resistance and high temperature resistance.
The nitriding treatment refers to a chemical heat treatment process for enabling nitrogen atoms to permeate into the surface layer of a workpiece, and when the valve is subjected to nitriding treatment, the valve is usually placed into nitriding equipment to be contacted with nitrogen gas, so that the nitrogen atoms permeate into the surface layer of the valve, and the nitrided valve has certain stability in the aspects of wear resistance, fatigue resistance, corrosion resistance, high temperature resistance and the like, but the nitriding effect of the valve is found to be poor in the detection process, and the stability performance does not reach the optimal degree. And after the valve is subjected to nitriding treatment, a large amount of black scale can be adhered to the surface of the valve, the valve is not easy to remove, and the cleanliness of a finished valve product is directly influenced.
Disclosure of Invention
The invention aims to provide nitriding equipment based on high stability of a valve, which can improve the stability of the valve and simultaneously remove black scale on the surface of the valve.
In order to achieve the purpose, the technical scheme of the invention provides nitriding equipment based on high stability of an air valve, which comprises a first conveying belt, a polishing mechanism, a rack, an air storage tank, a drying furnace and a reactor, wherein the air storage tank, the drying furnace and the reactor are sequentially arranged on the rack;
the gas storage tank is communicated with a gas pipe, the gas pipe penetrates through the drying furnace and is communicated with the reactor, the gas pipe is provided with a valve, the valve is positioned between the drying furnace and the reactor, the first conveying belt penetrates through the drying furnace and can convey the valve to the feed inlet;
the bottom of the reactor is provided with a discharge port, a blocking plate is arranged at the discharge port in a sliding manner, a collecting box is arranged below the reactor, the side wall of the collecting box is provided with a vibration motor, the bottom of the collecting box is provided with a blanking hole, a second conveying belt is arranged below the collecting box, and a plurality of material containing grooves are uniformly arranged on the second conveying belt;
the polishing mechanism comprises a hot air pipe, a supporting block and a polishing piece, the supporting block is arranged on the rack above the second conveyor belt, a circular cavity is arranged in the supporting block, and the circular cavity is communicated with the drying oven through the hot air pipe; the polishing piece is rotatably arranged on the supporting block, a plurality of fan pieces are fixed on the polishing piece, and the fan pieces are positioned in the cavity; the bottom of the supporting block is obliquely provided with a plurality of air injection holes, the air injection holes are communicated with the circular cavity, and gas sprayed by the air injection holes can be converged to the head of the valve.
The technical effect of the scheme is as follows: before nitriding treatment is carried out on the air valves, a batch of air valves are placed on a first conveyor belt and sent into a drying furnace to be baked for a period of time, and meanwhile, the drying furnace heats nitrogen in an air conveying pipe; heating to a certain temperature, closing the drying furnace, transferring the valve into the reactor through the feed inlet by using the first conveyor belt, closing the sealing plate, opening the valve, allowing the heated nitrogen in the gas transmission pipe to enter the reactor, closing the valve, and performing nitridation treatment on the valve in the reactor after the valve is contacted with the nitrogen; after nitriding treatment is carried out for a period of time, the plugging plate is opened, the air valves in the reactor fall into the collecting box from the discharge port, the air valves in the collecting box rub against each other under the vibration action of the vibration motor, the black dirt on the surfaces of the air valves are primarily polished, and the air valves in the collecting box sequentially fall onto the second conveying belt from the discharge port; when the air valve falls onto the second conveying belt from the discharge port, the drying furnace works again to heat the air valve and nitrogen in the next batch, and hot air generated in the heating process enters the circular cavity through the hot air pipe and then impacts the fan blade, so that the polishing blade is driven to rotate; the hot air impact fan blade rotates and then is ejected through the air ejecting hole, the valve head of the valve passing through the lower part of the supporting block and positioned on the second conveying belt is fixed, and the polishing blade rotates after the fixation and performs secondary polishing on black dirt on the surface of the valve.
Further, the reactor comprises an inner layer and an outer layer, an annular cavity is formed between the inner layer and the outer layer, the gas conveying pipe is communicated with the annular cavity, and holes are formed in the inner layer. The technical effect of the scheme is as follows: ensuring the nitrogen to be fully contacted with the air valve and improving the nitriding treatment effect.
Furthermore, a baffle is fixed on the first conveyor belt, and after the baffle is contacted with the top of the reactor, the air valve can slide down to the feed inlet along the baffle. The technical effect of the scheme is as follows: on the one hand, the stability of the air valve on the first conveying belt is improved, and meanwhile, the air valve is convenient to slide to the feeding port along the baffle.
Furthermore, the valve comprises a pressing plate, a valve rod, a supporting plate and a blocking block, the blocking block is arranged in the gas pipe, and a through hole is formed in the blocking block along the axial direction of the gas pipe; the backup pad is fixed to be set up in the frame, the valve rod radially runs through gas-supply pipe and shutoff piece along the gas-supply pipe, and the pipe wall and the backup pad sliding connection of valve rod and shutoff piece, gas-supply pipe, be equipped with logical groove on the valve rod, and lead to the groove and can aim at with the through-hole, the pot head has the spring under the valve rod, the spring is located between gas-supply pipe and the backup pad, press the clamp plate to be fixed in the valve rod upper end, the baffle can with press the clamp plate contact. The technical effect of the scheme is as follows: after the valve enters the reactor, the first conveyor belt continues to operate, the valve rod is pushed to slide after the baffle plate is contacted with the pressing plate, and nitrogen in the gas transmission pipe enters the reactor after the through groove in the valve rod is aligned with the through hole; after the baffle is separated from the pressing plate, the valve rod automatically resets under the action of the elastic force of the spring.
Further, the top of the reactor is provided with an arc-shaped groove, and the arc-shaped groove is positioned at the feed inlet. The technical effect of the scheme is as follows: the valve is beneficial to the valve collection sliding to the feed inlet, and the valve can conveniently and uniformly enter the reactor after the sealing plate is opened.
Another object of the present invention is to provide a nitridation process based on high stability of a valve, comprising the following steps:
step 1: the feed inlet is plugged by a sealing plate, the discharge outlet is plugged by a plugging plate, after the drying furnace is started to work, a batch of air valves are placed on a first conveyor belt and sent into the drying furnace for baking, and when the air valves are baked, the drying furnace also heats nitrogen in the air conveying pipe;
step 2: when the temperature of the air valve is baked to 290-grade 310 ℃ and the nitrogen is heated to 390-grade 410 ℃, the drying furnace is closed, the sealing plate is opened at the same time, and the air valve is transferred to the reactor through the feed inlet by the first conveyor belt and then the sealing plate is closed; then opening a valve, closing the valve after the heated nitrogen in the gas transmission pipe enters the reactor, and nitriding the valve in the reactor after the valve is contacted with the nitrogen;
and step 3: after nitriding treatment is carried out for 35-45min, opening the blocking plate, enabling the valves in the reactor to fall into the collecting box through the discharge port, then starting the vibration motor, enabling the valves in the collecting box to rub with each other under the vibration action of the vibration motor, carrying out primary polishing on black dirt on the surfaces of the valves, and enabling the valves in the collecting box to fall onto a second conveying belt from the blanking holes in sequence;
and 4, step 4: when the valves fall onto the second conveyor belt from the blanking holes, placing the next batch of valves onto the first conveyor belt and sending the valves into the drying furnace, starting the drying furnace again, baking the valves, and heating nitrogen; hot air generated in the heating process enters the round cavity through the hot air pipe and then impacts the fan blade, so that the polishing blade is driven to rotate; the hot air impact fan blade rotates and then is ejected through the air ejecting hole to act on the air valve passing through the lower part of the supporting block and positioned on the second conveying belt, the head of the air valve is fixed, and the polishing blade rotates after the fixing to polish black dirt on the surface of the air valve for the second time.
The technical effect of the scheme is as follows: before nitriding treatment, the temperature of the valve is firstly baked to 310 ℃ at 290-; moreover, the black scale on the surface of the valve can be removed by utilizing the hot gas generated in the process of baking the valve and heating nitrogen, and the valve can be fixed by utilizing the generated hot gas due to the specific shape of the valve, so that the polishing stability is improved.
Further, in the step 2, when the temperature of the air valve is baked to 300 ℃ and the nitrogen is heated to 400 ℃, the drying furnace is closed; and 3, opening the plugging plate after nitriding treatment for 40 min. The technical effect of the scheme is as follows: the nitriding effect of the valve is ensured to be optimal, so that the nitrided valve is ensured to have good stability.
Drawings
FIG. 1 is a front cross-sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a top cross-sectional view of the support block of FIG. 2.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a first conveyor belt 1, a gas storage tank 2, a drying furnace 3, a reactor 4, an annular cavity 5, holes 6, a plugging plate 7, a sealing plate 8, a baffle plate 9, a pressing plate 10, a valve rod 11, a supporting plate 12, a plugging block 13, a through hole 14, a through groove 15, a collecting box 16, a blanking hole 17, a second conveyor belt 18, a material containing groove 19, a hot gas pipe 20, a supporting block 21, a polishing piece 22, a circular cavity 23, a rotating rod 24, a fan piece 25, a gas injection hole 26, a valve 27 and a gas pipe 28.
The examples are substantially as shown in figures 1 to 3: the nitriding equipment based on the high stability of the air valve 27 shown in fig. 1 comprises a first conveyor belt 1, a grinding mechanism, an air storage tank 2, a drying furnace 3 and a reactor 4 which are fixedly installed on a rack from left to right in sequence, wherein the reactor 4 comprises an inner layer and an outer layer, an annular cavity 5 is formed between the inner layer and the outer layer, and a plurality of holes 6 are formed in the inner layer. The bottom of the reactor 4 is provided with a discharge hole, a plugging plate 7 is arranged on the rack at the discharge hole in a sliding manner, and the discharge hole can be opened when the plugging plate 7 slides rightwards. The top of reactor 4 is provided with the arc wall, and arc wall department opens there is the feed inlet, and feed inlet department slides and is provided with closing plate 8, can open the feed inlet when closing plate 8 slides right.
The first conveyor belt 1 may be a conveyor belt made of iron; the first conveyor belt 1 penetrates through the drying oven 3 and is used for conveying the air valve 27, and the baffle plate 9 is welded on the first conveyor belt 1. The air storage tank 2 is communicated with an air pipe 28, and the air pipe 28 is made of copper, but can also be made of nickel or other suitable materials. The right end of the air pipe 28 penetrates through the drying oven 3 and then is communicated with the annular cavity 5.
The air delivery pipe 28 is provided with a valve which is positioned between the drying furnace 3 and the reactor 4, the valve comprises a pressing plate 10, a valve rod 11, a supporting plate 12 and a blocking block 13, the blocking block 13 is arranged in the air delivery pipe 28, and a through hole 14 is arranged on the blocking block 13 along the axial direction of the air delivery pipe 28. The support plate 12 is fixed on the frame through a bolt, the valve rod 11 penetrates through the air pipe 28 and the blocking block 13 along the radial direction of the air pipe 28, and the valve rod 11 is connected with the blocking block 13, the pipe wall of the air pipe 28 and the support plate 12 in a sliding mode. A through groove 15 is formed in the valve rod 11, and the through groove 15 can be aligned with the through hole 14 when downward; the lower end of the valve rod 11 is sleeved with a spring which is positioned between the air pipe 28 and the support plate 12; the pressing plate 10 is fixed to the upper end of the valve rod 11 by a pin, and the baffle plate 9 can contact with the pressing plate 10 when the first conveyor belt 1 is operated.
A collecting box 16 is fixedly arranged on the frame below the reactor 4, and a vibrating motor is fixed on the side wall of the collecting box 16 through a bolt. The bottom of the collecting box 16 is provided with a blanking hole 17, and the diameter of the blanking hole 17 is 2mm larger than that of the head of the air valve 27. A second conveyor belt 18 is arranged on the rack below the collecting box 16, and a plurality of material containing grooves 19 (not completely shown in the figure) are uniformly arranged on the second conveyor belt 18.
As shown in fig. 2, the grinding mechanism includes a hot air pipe 20, a supporting block 21 and a grinding piece 22, the supporting block 21 is disposed on the frame above the second conveyor belt 18, a circular cavity 23 is formed in the supporting block 21, and the circular cavity 23 is communicated with the drying oven 3 through the hot air pipe 20. The upper end of the polishing plate 22 is fixed with a rotating rod 24, as shown in fig. 3, the rotating rod 24 is rotatably connected with the supporting block 21, and eight fan blades 25 are fixed on the rotating rod 24, and the fan blades 25 are located in the cavity. As shown in fig. 2, the bottom of the supporting block 21 is provided with air injection holes 26 in an inclined manner, the air injection holes 26 are communicated with the circular cavity 23, and as shown in fig. 3, the number of the air injection holes 26 is eight.
The nitriding process based on high stability of the valve comprises the following steps:
step 1: as shown in fig. 1, the sealing plate 8 is manually used for plugging the feeding hole, the plugging plate 7 is simultaneously used for plugging the discharging hole, then the drying oven 3 is started, a batch of air valves 27 are manually placed on the first conveyor belt 1 and sent into the drying oven 3 for baking, and when the air valves 27 are baked, the drying oven 3 also heats nitrogen in the air delivery pipe 28;
step 2: when the temperature of the air valve 27 is baked to 300 ℃, the nitrogen in the air delivery pipe 28 is heated to 400 ℃, the drying furnace 3 is closed at the moment, the feed opening is opened by sliding the sealing plate 8 rightwards, the first conveyor belt 1 runs, the air valve 27 is transferred to the reactor 4 through the feed opening, and then the feed opening is closed by the sliding sealing plate 8 leftwards; after the air valve 27 enters the reactor 4, the first conveyor belt 1 continues to operate, after the baffle plate 9 is contacted with the pressing plate 10, the baffle plate 9 pushes the pressing plate 10 and the valve rod 11 to slide downwards, and after the through groove 15 on the valve rod 11 is aligned with the through hole 14, nitrogen in the air conveying pipe 28 enters the reactor 4 to perform nitriding treatment on the air valve 27; after the baffle 9 is separated from the pressing plate 10, the valve rod 11 automatically resets upwards under the action of the elastic force of the spring, and simultaneously, after the baffle 9 is separated from the pressing plate 10, the first conveyor belt 1 stops running;
and step 3: after the valve 27 of the reactor 4 is subjected to nitriding treatment for 40min, manually sliding the plugging plate 7 rightwards to open the discharge hole, and enabling the valve 27 in the reactor 4 to fall into the collection box 16 through the discharge hole; then starting the vibration motor, enabling the air valves 27 in the collection box 16 to rub against each other under the vibration action of the vibration motor, performing primary polishing on the black dirt on the surfaces of the air valves 27, and enabling the air valves 27 in the collection box 16 to sequentially fall into the material containing grooves 19 of the second conveyor belt 18 from the blanking holes 17;
and 4, step 4: when the air valve 27 falls from the blanking hole 17 to the material containing groove 19, the first conveyor belt 1 is operated, the next batch of air valves 27 are placed on the first conveyor belt 1 and sent into the drying furnace 3, the drying furnace 3 is started again, then the air valve 27 is baked, and meanwhile, nitrogen in the air conveying pipe 28 is heated; hot air generated in the heating process enters the round cavity 23 shown in fig. 3 through the hot air pipe 20 and then impacts the fan blade 25, so that the rotating rod 24 and the grinding blade 22 shown in fig. 2 are driven to rotate; the hot gas impact fan sheet 25 rotates and then is sprayed out through the gas spraying hole 26 to act on the valve 27 passing through the lower part of the supporting block 21 and positioned in the material containing groove 19 of the second conveying belt 18, the flared valve head part of the valve 27 is fixed, and meanwhile, the rotating grinding sheet 22 carries out secondary grinding on black dirt on the surface of the valve 27.
Claims (4)
1. Nitriding equipment based on valve high stability, its characterized in that: the automatic grinding device comprises a first conveyor belt, a grinding mechanism, a rack, and a gas storage tank, a drying furnace and a reactor which are sequentially arranged on the rack, wherein a feed port is arranged at the top of the reactor, and a sealing plate is arranged at the feed port in a sliding manner;
the gas storage tank is communicated with a gas pipe, the gas pipe penetrates through the drying furnace and is communicated with the reactor, the gas pipe is provided with a valve, the valve is positioned between the drying furnace and the reactor, the first conveying belt penetrates through the drying furnace and can convey the valve to the feed inlet;
the bottom of the reactor is provided with a discharge port, a blocking plate is arranged at the discharge port in a sliding manner, a collecting box is arranged below the reactor, the side wall of the collecting box is provided with a vibration motor, the bottom of the collecting box is provided with a blanking hole, a second conveying belt is arranged below the collecting box, and a plurality of material containing grooves are uniformly arranged on the second conveying belt;
the polishing mechanism comprises a hot air pipe, a supporting block and a polishing piece, the supporting block is arranged on the rack above the second conveyor belt, a circular cavity is arranged in the supporting block, and the circular cavity is communicated with the drying oven through the hot air pipe; the polishing piece is rotatably arranged on the supporting block, a plurality of fan pieces are fixed on the polishing piece, and the fan pieces are positioned in the cavity; the bottom of the supporting block is obliquely provided with a plurality of gas injection holes, the gas injection holes are communicated with the circular cavity, and gas sprayed by the gas injection holes can be converged to the head of the valve;
the reactor comprises an inner layer and an outer layer, a ring cavity is formed between the inner layer and the outer layer, the gas pipe is communicated with the ring cavity, and the inner layer is provided with holes;
a baffle is fixed on the first conveyor belt, and after the baffle is contacted with the top of the reactor, the air valve can slide down to the feed inlet along the baffle;
the valve comprises a pressing plate, a valve rod, a supporting plate and a blocking block, wherein the blocking block is arranged in the gas pipe, and a through hole is formed in the blocking block along the axial direction of the gas pipe; the backup pad is fixed to be set up in the frame, the valve rod radially runs through gas-supply pipe and shutoff piece along the gas-supply pipe, and the pipe wall and the backup pad sliding connection of valve rod and shutoff piece, gas-supply pipe, be equipped with logical groove on the valve rod, and lead to the groove and can aim at with the through-hole, the pot head has the spring under the valve rod, the spring is located between gas-supply pipe and the backup pad, press the clamp plate to be fixed in the valve rod upper end, the baffle can with press the clamp plate contact.
2. The valve high stability based nitriding apparatus according to claim 1, wherein: the top of the reactor is provided with an arc-shaped groove which is positioned at the feed inlet.
3. The nitridation process based on high-stability nitridation equipment for valves, according to claim 1, wherein: the method comprises the following steps:
step 1: the feed inlet is plugged by a sealing plate, the discharge outlet is plugged by a plugging plate, after the drying furnace is started to work, a batch of air valves are placed on a first conveyor belt and sent into the drying furnace for baking, and when the air valves are baked, the drying furnace also heats nitrogen in the air conveying pipe;
step 2: when the temperature of the air valve is baked to 290-grade 310 ℃ and the nitrogen is heated to 390-grade 410 ℃, the drying furnace is closed, the sealing plate is opened at the same time, and the air valve is transferred to the reactor through the feed inlet by the first conveyor belt and then the sealing plate is closed; then opening a valve, closing the valve after the heated nitrogen in the gas transmission pipe enters the reactor, and nitriding the valve in the reactor after the valve is contacted with the nitrogen;
and step 3: after nitriding treatment is carried out for 35-45min, opening the blocking plate, enabling the valves in the reactor to fall into the collecting box through the discharge port, then starting the vibration motor, enabling the valves in the collecting box to rub with each other under the vibration action of the vibration motor, carrying out primary polishing on black dirt on the surfaces of the valves, and enabling the valves in the collecting box to fall onto a second conveying belt from the blanking holes in sequence;
and 4, step 4: when the valves fall onto the second conveyor belt from the blanking holes, placing the next batch of valves onto the first conveyor belt and sending the valves into the drying furnace, starting the drying furnace again, baking the valves, and heating nitrogen; hot air generated in the heating process enters the round cavity through the hot air pipe and then impacts the fan blade, so that the polishing blade is driven to rotate; the hot air impact fan blade rotates and then is ejected through the air ejecting hole to act on the air valve passing through the lower part of the supporting block and positioned on the second conveying belt, the head of the air valve is fixed, and the polishing blade rotates after the fixing to polish black dirt on the surface of the air valve for the second time.
4. The nitridation process based on nitridation equipment with high valve stability, which is used for the valve according to claim 3, is characterized in that: in the step 2, when the temperature of the air valve is baked to 300 ℃ and the nitrogen is heated to 400 ℃, the drying furnace is closed; and 3, opening the plugging plate after nitriding treatment for 40 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640844.7A CN109594036B (en) | 2018-12-29 | 2018-12-29 | Nitriding equipment based on high stability of air valve and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640844.7A CN109594036B (en) | 2018-12-29 | 2018-12-29 | Nitriding equipment based on high stability of air valve and process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109594036A CN109594036A (en) | 2019-04-09 |
| CN109594036B true CN109594036B (en) | 2020-07-28 |
Family
ID=65965472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811640844.7A Active CN109594036B (en) | 2018-12-29 | 2018-12-29 | Nitriding equipment based on high stability of air valve and process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109594036B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747317A (en) * | 2012-07-27 | 2012-10-24 | 重庆三爱海陵实业有限责任公司 | Liquid nitrocarburizing automatic production line for valve |
| CN203419976U (en) * | 2013-08-07 | 2014-02-05 | 湖南特科能热处理有限公司 | Nitriding furnace |
| FR3001231A1 (en) * | 2013-01-24 | 2014-07-25 | Renault Sa | THERMOCHEMICAL DIFFUSION PROCESSING METHOD FOR A MECHANICAL ELEMENT, AND CORRESPONDING MECHANICAL ELEMENT |
| CN108638274A (en) * | 2018-07-18 | 2018-10-12 | 重庆力迅家居有限公司 | Scrap loop formula timber device for thermally cutting |
| CN108747686A (en) * | 2018-07-18 | 2018-11-06 | 重庆力迅家居有限公司 | Timber surface processing fixing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6012444A (en) * | 1998-10-19 | 2000-01-11 | Skender; David J. | Radiant cooking with burners mounted over the cooking medium |
| CN103627956B (en) * | 2013-11-27 | 2015-07-15 | 江苏科技大学 | Preparation method for wear-resistant intake valve |
-
2018
- 2018-12-29 CN CN201811640844.7A patent/CN109594036B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747317A (en) * | 2012-07-27 | 2012-10-24 | 重庆三爱海陵实业有限责任公司 | Liquid nitrocarburizing automatic production line for valve |
| FR3001231A1 (en) * | 2013-01-24 | 2014-07-25 | Renault Sa | THERMOCHEMICAL DIFFUSION PROCESSING METHOD FOR A MECHANICAL ELEMENT, AND CORRESPONDING MECHANICAL ELEMENT |
| CN203419976U (en) * | 2013-08-07 | 2014-02-05 | 湖南特科能热处理有限公司 | Nitriding furnace |
| CN108638274A (en) * | 2018-07-18 | 2018-10-12 | 重庆力迅家居有限公司 | Scrap loop formula timber device for thermally cutting |
| CN108747686A (en) * | 2018-07-18 | 2018-11-06 | 重庆力迅家居有限公司 | Timber surface processing fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109594036A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206284290U (en) | A kind of tealeaves cleaning drying device for being capable of damping | |
| CN204711753U (en) | A kind of automation timber stoving polishing all-in-one | |
| CN109822405A (en) | Blade ground device | |
| CN110274247B (en) | Spinneret high-temperature incineration cleaning furnace | |
| CN109594036B (en) | Nitriding equipment based on high stability of air valve and process thereof | |
| CN106690360A (en) | Conveying type fruit-vegetable cleaning and drying device | |
| CN108800780B (en) | Drying box | |
| CN111111821A (en) | Stone waste processing equipment | |
| CN102551179A (en) | Roaster for coffee beans | |
| CN107308900A (en) | A kind of chemical reaction kettle of high insulating effect | |
| CN109182613B (en) | Natural environment-friendly scalp and processing technology thereof | |
| CN114628303B (en) | Crystal grain stripping off device | |
| CN217483108U (en) | Silicon mud recycling device | |
| CN115814994A (en) | Multistation anchor ring rotation thermal spraying device | |
| CN113584276A (en) | Heat treatment device and method capable of carrying out full-through quenching and surface quenching on air valve | |
| CN203620948U (en) | Wood chip treatment device | |
| CN207187735U (en) | A kind of chemical reaction kettle of high insulating effect | |
| CN216614752U (en) | Stepped heat treatment device for automobile clutch friction plate | |
| CN219037501U (en) | Drying device for concrete | |
| CN207071385U (en) | Body of heater heater | |
| CN111777142A (en) | Waste concentrate handles with purifier that flocculates | |
| CN106670739B (en) | A kind of process of surface treatment of grinding roll overlaying | |
| CN215113969U (en) | Porcelain imitating decoration firing furnace for producing milky white glass bottle | |
| CN117697605B (en) | Multifunctional device for polishing mechanical accessories | |
| CN108902377A (en) | A kind of automatically cleaning tea water-removing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210128 Address after: 401520 no.63-2, Xinyou Road, Yinxiang new town, Tuchang Town, Hechuan District, Chongqing Patentee after: Chongqing henglei industry and Trade Co., Ltd Address before: 401520 sankou village, Tuchang Town, Hechuan District, Chongqing Patentee before: CHONGQING JIANDA HENGYI VALVE Co.,Ltd. |
|
| TR01 | Transfer of patent right |