CN109594036A - Nitridation equipment and its technique based on valve high stability - Google Patents
Nitridation equipment and its technique based on valve high stability Download PDFInfo
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- CN109594036A CN109594036A CN201811640844.7A CN201811640844A CN109594036A CN 109594036 A CN109594036 A CN 109594036A CN 201811640844 A CN201811640844 A CN 201811640844A CN 109594036 A CN109594036 A CN 109594036A
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to valves to nitrogenize field, more particularly to nitridation equipment and its technique based on valve high stability, nitridation equipment based on valve high stability includes the first conveyer belt, workpiece polishing mechanism, rack and the air accumulator being set in turn in rack, drying oven and reactor, nitriding process based on valve high stability, the following steps are included: step 1: valve is sent into drying oven and toasted by the first conveyer belt, while heating to nitrogen；Step 2: when valve temperature is baked to 290-310 DEG C, nitrogen is heated to 390-410 DEG C, valve and nitrogen being sent into nitrogen treatment in reactor；Step 3: after nitrogen treatment 35-45min, valve being sent on the second conveyer belt；Step 4: workpiece polishing mechanism polishes to valve.When using the technical program, the black dirt of valve surfaces is purged while valve stability can be improved.
Description
Technical field
The present invention relates to valves to nitrogenize field, and in particular to nitridation equipment and its technique based on valve high stability.
Background technique
The effect of valve is to be responsible for input air and the exhaust gas being discharged after burning into engine specially, and valve includes valve
Bar and head portion that；Due to starting built-in temperature higher, it requires valve must have certain wear-resisting property, fatigue performance,
Corrosion resisting property and high temperature resistance.
Nitrogen treatment is the chemical heat treatment process for instigating nitrogen-atoms to penetrate into workpiece surface, is carrying out nitrogen treatment to valve
When, usually valve is put into nitridation equipment and is contacted with nitrogen, so that nitrogen-atoms be made to penetrate into valve surface layer, the valve after nitridation
Wearability, fatigue durability, corrosion resistance and in terms of there is certain stability, but find gas in the detection process
The nitrogenizing effect of door is bad, and stability is not up to optimum degree.And valve, after carrying out nitrogen treatment, valve surfaces can glue
Attached a large amount of black dirt, easy-clear, does not directly influence the cleannes of valve finished product.
Summary of the invention
The purpose of the present invention is to provide a kind of nitridation equipment based on valve high stability, which can improve gas
The stability of door, while to the nitridation equipment that the black dirt of valve surfaces is purged.
In order to achieve the above objectives, nitridation equipment of the technical solution of the present invention offer based on valve high stability, including the
One conveyer belt, workpiece polishing mechanism, rack and the air accumulator being set in turn in rack, drying oven and reactor, the reactor
Top be equipped with feed inlet, sliding is provided with sealing plate at the feed inlet；
Appendix is communicated on the air accumulator, the appendix is connected to through drying oven and with reactor, and appendix
Equipped with valve, for the valve between drying oven and reactor, first conveyer belt runs through drying oven, and the first conveyer belt
Valve can be sent at feed inlet；
The bottom of the reactor is equipped with discharge port, and the discharge outlet sliding is provided with plugging plate, the reactor
Lower section is provided with collecting box, and the side wall of the collecting box is provided with vibrating motor, and the bottom of the collecting box is equipped with material-dropping hole, institute
The lower section for stating collecting box is equipped with the second conveyer belt, is evenly arranged with several charge slots on second conveyer belt；
The workpiece polishing mechanism includes heating pipe, supporting block and grinding disc, and the supporting block is set to above the second conveyer belt
Rack on, cylindrical cavity is equipped in the supporting block, the cylindrical cavity is connected to drying oven by heating pipe；The grinding disc rotation is set
It is placed in supporting block, and is fixed with several fan blades in grinding disc, fan blades is located in cavity；The bottom angled of the supporting block is arranged
There are several fumaroles, fumarole is connected to cylindrical cavity, and the gas that fumarole sprays can converge to head portion that.
Having the technical effect that before carrying out nitrogen treatment to valve for this programme, first puts a collection of valve to the first conveyer belt
It goes up and is sent into baking a period of time in drying oven, while drying oven heats the nitrogen in appendix；It is heated to certain temperature
After degree, drying oven is closed, then valve is transferred in reactor by the first conveyer belt through feed inlet, opens valve after closing sealing plate
Door, closes valve after so that the nitrogen in appendix after heating is entered reactor, valve contacted with nitrogen after in reactor to gas
Door carries out nitrogen treatment；Nitrogen treatment for a period of time after, open plugging plate, the valve in reactor falls to collection from discharge port
In case, and under the effect of vibration of vibrating motor, valve phase mutual friction in collecting box is carried out the black dirt of valve surfaces first
Polishing, the valve being collected simultaneously in case are successively fallen on the second conveyer belt from discharge port；Is fallen to from discharge port in valve
When on two conveyer belts, makes drying oven task again, next batch valve and nitrogen are heated, generated in heating process
Hot gas impacts fan blades after heating pipe enters cylindrical cavity, so that grinding disc be driven to rotate；Hot gas impacts after fan blades rotation through fumarole
It sprays, the head portion that passed through below supporting block and be located at valve on the second conveyer belt is fixed, after fixing in rotation
Grinding disc carries out secondary polishing to the black dirt of valve surfaces.
Further, the reactor includes internal layer and outer layer, and annular chamber is formed between the internal layer and outer layer, described defeated
Tracheae is connected to annular chamber, and the internal layer is equipped with hole.Having the technical effect that for this programme ensures that nitrogen can be tapped with filling of valve
Touching improves nitrogen treatment effect.
Further, it is fixed with baffle on first conveyer belt, after the baffle is contacted with the top of reactor, valve
It can slide along baffle to feed inlet.This programme has the technical effect that on the one hand raising valve is steady on the first conveyer belt
It is qualitative, while valve being facilitated to slide along baffle to feed inlet.
Further, the valve includes pressing plate, valve rod, support plate and plugging block, and the plugging block is set to gas transmission
In pipe, and the axial direction in plugging block along appendix is provided with through-hole；The support plate is fixedly installed in rack, the valve rod edge
Appendix extends radially through appendix and plugging block, and valve rod is slidably connected with plugging block, the tube wall of appendix and support plate,
The valve rod is equipped with through slot, and through slot energy and through-hole alignment, and valve rod lower end is cased with spring, and the spring is located at appendix and branch
Between fagging, the pressing plate is fixed on valve rod upper end, and the baffle can be contacted with pressing plate.This programme has the technical effect that
After valve enters reactor, the first conveyer belt remains in operation, and after baffle and pressing plate contact, pushes valve stem slides, works as valve
After through slot and through-hole alignment on bar, the nitrogen in appendix enters in reactor；After baffle is separated with pressing plate, valve rod exists
It automatically resets under the elastic force effect of spring.
Further, the top of the reactor is equipped with arc groove, and the arc groove is located at feed inlet.The skill of this programme
Art effect is: being conducive to slide the valve aggregation to feed inlet, enters in reactor after opening sealing plate convenient for unified.
Another object of the present invention is to provide a kind of nitriding process based on valve high stability, comprising the following steps:
Step 1: feed inlet is blocked by sealing plate, while discharge port is blocked by plugging plate, after starting drying oven work,
A collection of valve is put on the first conveyer belt and being sent into drying oven and toasting, when toasting to valve, drying oven is also right
Nitrogen in appendix is heated；
Step 2: when valve temperature is baked to 290-310 DEG C, nitrogen is heated to 390-410 DEG C, closing drying oven, simultaneously
Sealing plate is opened, valve is closed sealing plate after feed inlet is transferred to reactor by the first conveyer belt；Then valve, gas transmission are opened
Nitrogen in pipe after heating, which enters after reactor, closes valve, valve contacted with nitrogen after in being nitrogenized in reactor to valve
Processing；
Step 3: after nitrogen treatment 35-45min, opening plugging plate, the valve in reactor falls to collection through discharge port
In case, then start vibrating motor, under the effect of vibration of vibrating motor, valve phase mutual friction in collecting box, to valve table
The black dirt in face is polished for the first time, and the valve being collected simultaneously in case is successively fallen on the second conveyer belt from material-dropping hole；
Step 4: when valve is fallen on the second conveyer belt from material-dropping hole, next batch valve being put to the first conveyer belt
It goes up and is sent into drying oven, valve is toasted after being again started up drying oven, while nitrogen is heated；In heating process
The hot gas of generation impacts fan blades after heating pipe enters cylindrical cavity, so that grinding disc be driven to rotate；It is passed through after hot gas impact fan blades rotation
Fumarole sprays, and acts on by the valve below supporting block and on the second conveyer belt, head portion that is fixed, Gu
Grinding disc after fixed in rotation carries out secondary polishing to the black dirt of valve surfaces.
This programme has the technical effect that before nitrogen treatment, and valve temperature is first baked to 290-310 DEG C, then with 390-
410 DEG C of nitrogen nitrogen treatment 35-45min, can be improved the nitrogenizing effect of valve, enhance wear-resisting property, the fatigue durability of valve
Energy, corrosion resisting property and high temperature resistance；And it can be driven using the hot gas generated during baking valve and heated nitrogen
Grinding disc is purged the black dirt of valve surfaces, and due to the specific shape of valve, moreover it is possible to using the hot gas generated to gas
Door is fixed, to improve the stability of polishing.
Further, valve temperature is baked to 300 DEG C in step 2, nitrogen is when being heated to 400 DEG C, closes drying oven；Step
In 3 after nitrogen treatment 40min, plugging plate is opened.Having the technical effect that for this programme ensures that the nitrogenizing effect of valve reaches most preferably,
So that it is guaranteed that the valve after nitridation reaches good stability.
Detailed description of the invention
Fig. 1 is the positive cross-sectional view of the embodiment of the present invention；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the overhead sectional view of supporting block in Fig. 2.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: the first conveyer belt 1, air accumulator 2, drying oven 3, reactor 4, annular chamber
5, hole 6, plugging plate 7, sealing plate 8, baffle 9, pressing plate 10, valve rod 11, support plate 12, plugging block 13, through-hole 14, through slot 15,
Collecting box 16, the second conveyer belt 18, charge slot 19, heating pipe 20, supporting block 21, grinding disc 22, cylindrical cavity 23, turns material-dropping hole 17
Lever 24, fan blades 25, fumarole 26, valve 27, appendix 28.
Embodiment is substantially as illustrated in the accompanying drawings from 1 to 3: the nitridation equipment based on 27 high stability of valve as shown in Figure 1, including
First conveyer belt 1, workpiece polishing mechanism and the air accumulator 2 being successively fixedly installed in rack from left to right, drying oven 3 and reaction
Device 4, reactor 4 include internal layer and outer layer, form annular chamber 5 between internal layer and outer layer, are provided with several holes 6 on internal layer.Reaction
The bottom of device 4 is provided with discharge port, and sliding is provided with plugging plate 7 in the rack of discharge outlet, and plugging plate 7 can be beaten when sliding to the right
Output material mouth.The top of reactor 4 is provided with arc groove, and feed inlet is provided at arc groove, and sliding is provided with sealing at feed inlet
Plate 8, sealing plate 8 can open feed inlet when sliding to the right.
First conveyer belt 1 can be transmission net band, and transmission net band is fabricated from iron；First conveyer belt 1 runs through drying oven 3, uses
In transmission valve 27, the first conveyer belt 1 is welded with baffle 9.Appendix 28 is communicated on air accumulator 2, appendix 28 is made of copper,
It can certainly be made of nickel or other suitable materials.28 right end of appendix is connected to after running through drying oven 3 with annular chamber 5.
Appendix 28 is equipped with valve, and for valve between drying oven 3 and reactor 4, valve includes pressing plate 10, valve rod
11, support plate 12 and plugging block 13, plugging block 13 are arranged in appendix 28, and the axial direction in plugging block 13 along appendix 28 is provided with
Through-hole 14.Support plate 12 is fixed by bolts in rack, and valve rod 11 extends radially through appendix 28 and closure along appendix 28
Block 13, wherein valve rod 11 is slidably connected with plugging block 13, the tube wall of appendix 28 and support plate 12.Through slot is provided on valve rod 11
15, the alignment of the downward Shi Nengyu through-hole 14 of through slot 15；11 lower end of valve rod is cased with spring, spring be located at appendix 28 and support plate 12 it
Between；Pressing plate 10 is fixed on 11 upper end of valve rod by pin, and when the first conveyer belt 1 operates, baffle 9 can be contacted with pressing plate 10.
It is fixedly installed with collecting box 16 in the rack of 4 lower section of reactor, the side wall of collecting box 16 has been bolted vibration
Dynamic motor.The bottom of collecting box 16 is provided with material-dropping hole 17, and the diameter of material-dropping hole 17 is 2mm bigger than the diameter on 27 head of valve.It collects
The second conveyer belt 18 is installed in the rack of 16 lower section of case, several charge slots 19 are evenly arranged on the second conveyer belt 18 (in figure
It is not completely shown).
As shown in Fig. 2, workpiece polishing mechanism includes heating pipe 20, supporting block 21 and grinding disc 22, supporting block 21 is set to second
In the rack of 18 top of conveyer belt, cylindrical cavity 23 is provided in supporting block 21, cylindrical cavity 23 is connected to drying oven 3 by heating pipe 20.It beats
The upper end of grinding 22 is fixed with rotating bar 24, as shown in figure 3, rotating bar 24 and supporting block 21 are rotatablely connected, and rotating bar 24
On be fixed with eight fan blades 25, fan blades 25 is located in cavity.As shown in Fig. 2, the bottom angled of supporting block 21 is provided with fumarole
26, fumarole 26 is connected to cylindrical cavity 23, as shown in figure 3, the quantity of fumarole 26 is eight.
Nitriding process based on valve high stability, comprising the following steps:
Step 1: as shown in Figure 1, sealing plate 8 is manually blocked feed inlet, while plugging plate 7 being blocked into discharge port, then
Start drying oven 3, manually puts a collection of valve 27 on the first conveyer belt 1 and being sent into drying oven 3 and toasting, to valve 27
When being toasted, drying oven 3 also heats the nitrogen in appendix 28；
Step 2: when 27 temperature of valve is baked to 300 DEG C, the nitrogen in appendix 28 is heated to 400 DEG C, closes at this time
Drying oven 3 is closed, while being slidingly sealed plate 8 to the right and opening feed inlet, the first conveyer belt 1 operates and shifts valve 27 through feed inlet
To reactor 4, then a left side is slidingly sealed plate 8 and closes feed inlet；After valve 27 enters reactor 4, the first conveyer belt 1 is after reforwarding
Turn, after baffle 9 and the contact of pressing plate 10, baffle 9 pushes pressing plate 10 and 11 slide downward of valve rod, the through slot on valve rod 11
After 15 are aligned with through-hole 14, the nitrogen in appendix 28 enters in reactor 4, carries out nitrogen treatment to valve 27；Wherein, work as gear
After plate 9 is separated with pressing plate 10, valve rod 11 automatically resets upwards under the elastic force effect of spring, while in baffle 9 and pressing plate
After 10 separation, the first conveyer belt 1 is made to shut down；
Step 3: after the 27 nitrogen treatment 40min of valve of reactor 4, manually sliding plugging plate 7 opens discharge port to the right, instead
The valve 27 in device 4 is answered to fall in collecting box 16 through discharge port；Then start vibrating motor, in the effect of vibration of vibrating motor
Under, the 27 phase mutual friction of valve in collecting box 16 is polished for the first time to the black dirt on 27 surface of valve, is collected simultaneously in case 16
Valve 27 is successively out of, material-dropping hole 17 falls to the second conveyer belt 18 charge slot 19；
Step 4: when valve 27 falls to charge slot 19 from material-dropping hole 17, operating the first conveyer belt 1 and by next group
Secondary valve 27 is put on the first conveyer belt 1 and being sent into drying oven 3, is toasted after being again started up drying oven 3 to valve 27, together
When the nitrogen in appendix 28 is heated；The hot gas generated in heating process enters circle as shown in Figure 3 through heating pipe 20
Fan blades 25 is impacted after chamber 23, so that rotating bar 24 and grinding disc 22 as shown in Figure 2 be driven to rotate；Hot gas impacts fan blades 25 and rotates
It is sprayed by fumarole 26, acts on the valve 27 by supporting block 21 lower section and being located in 18 charge slot 19 of the second conveyer belt,
Valve 27 is fixed in horn-like head portion that, while the grinding disc 22 in rotation carries out the black dirt on 27 surface of valve
Secondary polishing.
Claims (7)
1. the nitridation equipment based on valve high stability, it is characterised in that: including the first conveyer belt, workpiece polishing mechanism, rack and
The top of air accumulator, drying oven and the reactor being set in turn in rack, the reactor is equipped with feed inlet, the feed inlet
Place's sliding is provided with sealing plate；
Appendix is communicated on the air accumulator, the appendix is connected to through drying oven and with reactor, and appendix is equipped with
Valve, the valve is between drying oven and reactor, and first conveyer belt runs through drying oven, and the first conveyer belt can incite somebody to action
Valve is sent at feed inlet；
The bottom of the reactor is equipped with discharge port, and the discharge outlet sliding is provided with plugging plate, the lower section of the reactor
It is provided with collecting box, the side wall of the collecting box is provided with vibrating motor, and the bottom of the collecting box is equipped with material-dropping hole, the receipts
The lower section of header is equipped with the second conveyer belt, is evenly arranged with several charge slots on second conveyer belt；
The workpiece polishing mechanism includes heating pipe, supporting block and grinding disc, and the supporting block is set to the machine above the second conveyer belt
On frame, cylindrical cavity is equipped in the supporting block, the cylindrical cavity is connected to drying oven by heating pipe；The grinding disc is rotatably dispose in
Several fan blades are fixed in supporting block, and in grinding disc, fan blades is located in cavity；If the bottom angled of the supporting block is provided with
Dry fumarole, fumarole are connected to cylindrical cavity, and the gas that fumarole sprays can converge to head portion that.
2. the nitridation equipment according to claim 1 based on valve high stability, it is characterised in that: the reactor includes
Internal layer and outer layer form annular chamber between the internal layer and outer layer, the appendix is connected to annular chamber, and the internal layer is equipped with
Hole.
3. the nitridation equipment according to claim 2 based on valve high stability, it is characterised in that: first conveyer belt
On be fixed with baffle, after the baffle is contacted with the top of reactor, valve can be slid along baffle to feed inlet.
4. the nitridation equipment according to claim 3 based on valve high stability, it is characterised in that: the valve includes pressing
Pressing plate, valve rod, support plate and plugging block, the plugging block are set in appendix, and the axial direction in plugging block along appendix is set
It is equipped with through-hole；The support plate is fixedly installed in rack, and the valve rod extends radially through appendix and plugging block along appendix,
And valve rod is slidably connected with plugging block, the tube wall of appendix and support plate, the valve rod is equipped with through slot, and through slot can with it is logical
Hole alignment, valve rod lower end are cased with spring, and between appendix and support plate, the pressing plate is fixed on valve rod the spring
End, the baffle can be contacted with pressing plate.
5. the nitridation equipment according to claim 4 based on valve high stability, it is characterised in that: the top of the reactor
Portion is equipped with arc groove, and the arc groove is located at feed inlet.
6. the nitriding process according to claim 1 based on valve high stability, it is characterised in that: the following steps are included:
Step 1: feed inlet being blocked by sealing plate, while discharge port is blocked by plugging plate, after starting drying oven work, by one
Batch valve is put on the first conveyer belt and being sent into drying oven and being toasted, and when toasting to valve, drying oven is also to gas transmission
Nitrogen in pipe is heated；
Step 2: when valve temperature is baked to 290-310 DEG C, nitrogen is heated to 390-410 DEG C, closing drying oven, open simultaneously
Valve is closed sealing plate after feed inlet is transferred to reactor by sealing plate, the first conveyer belt；Then valve is opened, in appendix
Nitrogen after heating, which enters after reactor, closes valve, valve contacted with nitrogen after in being carried out at nitridation in reactor to valve
Reason；
Step 3: after nitrogen treatment 35-45min, plugging plate is opened, the valve in reactor is fallen in collecting box through discharge port,
Then start vibrating motor, under the effect of vibration of vibrating motor, valve phase mutual friction in collecting box, to the black of valve surfaces
Dirt is polished for the first time, and the valve being collected simultaneously in case is successively fallen on the second conveyer belt from material-dropping hole；
Step 4: when valve is fallen on the second conveyer belt from material-dropping hole, by next batch valve put on the first conveyer belt simultaneously
It is sent into drying oven, valve is toasted after being again started up drying oven, while nitrogen is heated；It is generated in heating process
Hot gas impact fan blades after heating pipe enters cylindrical cavity, so that grinding disc be driven to rotate；Hot gas impacts after fan blades rotation through jet
Hole sprays, and acts on by the valve below supporting block and on the second conveyer belt, head portion that is fixed, after fixed
Grinding disc in rotation carries out secondary polishing to the black dirt of valve surfaces.
7. the nitriding process according to claim 5 based on valve high stability, it is characterised in that: valve temperature in step 2
Degree is baked to 300 DEG C, nitrogen is when being heated to 400 DEG C, closes drying oven；In step 3 after nitrogen treatment 40min, plugging plate is opened.
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 true CN109594036A (en) | 2019-04-09 |
| CN109594036B 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 |
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| CN (1) | CN109594036B (en) |
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| US6012444A (en) * | 1998-10-19 | 2000-01-11 | Skender; David J. | Radiant cooking with burners mounted over the cooking medium |
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| CN203419976U (en) * | 2013-08-07 | 2014-02-05 | 湖南特科能热处理有限公司 | Nitriding furnace |
| CN103627956A (en) * | 2013-11-27 | 2014-03-12 | 江苏科技大学 | Wear-resistant intake valve and preparation method thereof |
| 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 |
-
2018
- 2018-12-29 CN CN201811640844.7A patent/CN109594036B/en active Active
Patent Citations (7)
| 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 |
| 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 |
| CN103627956A (en) * | 2013-11-27 | 2014-03-12 | 江苏科技大学 | Wear-resistant intake valve and preparation method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN109594036B (en) | 2020-07-28 |
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