CN106811718A - Compressor pump component carbo-nitriding method - Google Patents
Compressor pump component carbo-nitriding method Download PDFInfo
- Publication number
- CN106811718A CN106811718A CN201710097122.0A CN201710097122A CN106811718A CN 106811718 A CN106811718 A CN 106811718A CN 201710097122 A CN201710097122 A CN 201710097122A CN 106811718 A CN106811718 A CN 106811718A
- Authority
- CN
- China
- Prior art keywords
- carbo
- compressor pump
- nitriding
- pump component
- ammonia
- 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.)
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Classifications
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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
- C23C8/28—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 more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
-
- 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
- C23C8/34—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 more than one element being applied in more than one step
Abstract
The invention provides a kind of compressor pump component carbo-nitriding method, belong to metal surface technical field of chemistry.It solves existing compressor pump component and uses salt Bath Nitriding Treatment, there is a problem that pollutant emission is high.This compressor pump component carbo-nitriding method is carried out by following sequential steps：Shove charge first；Then deoxidation in stove；Then chemical surface treatment, by compressor pump element heats to insulation 50min 90min after 570 DEG C 600 DEG C, protective gas, ammonia and carbon dioxide is persistently injected in holding stage is to carbo-nitriding furnace chamber；Finally come out of the stove.The present invention changes compressor pump component nitrogenation treatment technology type.The carbon dioxide used in this compressor pump component carbo-nitriding method is nontoxic, and ammonia can be decomposed at high temperature, and ammonia has strong impulse smell, thus people easily have found that ammonia is revealed, and makes emergency processing in time.
Description
Technical field
The invention belongs to metal surface chemical treatment method field, it is related at a kind of chemistry of the metal surface of compressor structural components
Reason method, particularly a kind of compressor pump component carbo-nitriding method.
Background technology
Low-pressure gas is promoted to compressor a kind of driven fluid machinery of gases at high pressure, is the heart of refrigeration system.
Compressor is used in the electrical equipment such as air-conditioning, refrigerator.The components such as piston, blade are one of important components of compressor pump, whole
Compression high-temperature high-pressure gas refrigerant is carry during individual compressor operating, mechanical energy is converted into the main work of interior energy
Make；Thus the component such as piston and blade must possess good mechanical performance and preferably corrosion-resistant, high temperature resistant and higher
Case hardness.
If Fig. 1 is the piston of a freezer compressor, the requirement of its portion of techniques parameter detecting is lateral surface middle-range end face 4mm
Place's case hardness reaches 500HV0.2, and (A points) compound layer reaches 18 μm at side middle-range end face 4mm, (B points) Bai Liang at sphere
Layer reaches 10 μm.For this it is proposed that a kind of preparation method (application publication number of piston of reciprocating compressor
CN102335812A) and using the method (application of the stainless special sliding parts of steel making rotary compressor of 9Cr18 or 9Cr18Mo
Publication No. CN101905420A) etc., and somebody proposes various nitridation treatment methods, such as a kind of 11Cr17 stainless steels slide plate
Method for nitriding gas (application publication number CN102517541A), 9Cr18 or 9Cr18Mo stainless steels slide plate (or blade)
Liquid tufftriding method (application publication number CN101906607A) etc..Although existing salt Bath Nitriding Treatment mode can reach
Technical standard needed for product, but those skilled in the art want to further reduce pollutant emission, reduce product manufacturing
Cost and raising product quality.
The content of the invention
The present invention proposes a kind of compressor pump component carbo-nitriding method, the technical problem to be solved in the present invention be as
What reduces compressor pump component nitrogen treatment pollutant emission.
The technical problem to be solved of the invention can be realized by following technical proposal：This compressor pump component carbon nitrogen
Co-infiltrating method is carried out by following sequential steps：
Shove charge first, compressor pump component is put into carbo-nitriding furnace chamber and is put in carbo-nitriding furnace chamber
Put energizer；
Then deoxidation in stove, first passes through to vacuumize carbo-nitriding furnace chamber pressure is evacuated into below 5KPa, then common to carbon nitrogen
Injection protective gas is until malleation in oozing furnace chamber；
Then chemical surface treatment, by compressor pump element heats to being incubated 50min-90min after 570 DEG C -600 DEG C,
Protective gas, ammonia and carbon dioxide are persistently injected in holding stage is to carbo-nitriding furnace chamber；
Finally come out of the stove, first stop to injection ammonia and carbon dioxide in carbo-nitriding furnace chamber, then cool down compressor pump
Component, pump body member temperature to be compressed stop after being down to less than 200 DEG C in carbo-nitriding furnace chamber inject protective gas with
And compressor pump component is taken out from carbo-nitriding furnace chamber.
Compared with prior art, the present invention changes compressor pump component nitrogenation treatment technology type.This compressor pump
The carbon dioxide used in body component carbo-nitriding method is nontoxic, although ammonia energy skin ambustion, eyes, respiratory apparatus
Mucous membrane, but ammonia can decompose at high temperature, and ammonia has strong impulse smell, thus people easily have found that ammonia is revealed, in time
Make emergency processing.From for still further aspect, this compressor pump component carbo-nitriding method and salt Bath Nitriding Treatment method
Compared to without using high poisons such as potassium cyanide, Cymag, potassium sulfides and being difficult the chemicals of post processing, thus this compressor pump structure
Part carbo-nitriding method significantly decreases compressor pump component nitrogen treatment pollutant emission.
Confirmed by testing, this compressor pump component carbo-nitriding method also has following beneficial compared with prior art
Effect：1st, compressor pump component surface will not produce the piebald that similar salt Bath Nitriding Treatment is produced, and then improve product conjunction
Lattice rate and product quality.2nd, each working procedure parameter of this compressor pump component carbo-nitriding method is easily controlled, effectively
The salt Bath Nitriding Treatment uppity problem of liquid composition is avoided, and then is reduced production cost and is improved product quality uniformity.
3rd, the nitride layer, white layer of sphere is finer and close.
Preferably, protective gas is nitrogen and/or ammonia.
Preferably, energizer is tetrachloro-ethylene solution or citric acid solution.
Preferably, energizer and solid particulate matter mixing are placed on energizer and place in bucket, energizer is placed bucket and is placed
On carbo-nitriding furnace chamber bottom surface.
Preferably, the injection flow of ammonia is 100L/min-110L/min, the injection flow of carbon dioxide is 0.5L/
min-0.8L/min。
Brief description of the drawings
Fig. 1 is the cross section structure diagram of piston for refrigerator compressor.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
The present embodiment further illustrates this compressor pump component carbon nitrogen by taking the piston for refrigerator compressor shown in Fig. 1 as an example
The specific operation and beneficial effect of co-infiltrating method.
The material of piston for refrigerator compressor is 040A12 (BS970), and weight is 21 grams.
To that must carry out cleaning treatment before piston for refrigerator compressor carbo-nitriding, cleaning treatment is first by freezer compressor
Piston is placed in fixture, then fixture is put into 45 DEG C -50 DEG C of alkaline solution and is utilized together with piston for refrigerator compressor
Ultrasonic wave carries out cleaning 5min-8min, peels off the greasy dirt on piston for refrigerator compressor surface and comes off；Taken out simultaneously from solution afterwards
Drying.
The carbo-nitriding furnace chamber volume that this compressor pump component carbo-nitriding method is used is 1.5m3, batch should
Control the 45%-65% in above-mentioned volume.
This compressor pump component carbo-nitriding method is carried out by following sequential steps：
Shove charge first, fixture is put into carbo-nitriding furnace chamber and in carbo-nitriding together with piston for refrigerator compressor
Energizer is placed in furnace chamber.
Energizer is tetrachloro-ethylene solution or citric acid solution.More particularly, on the bottom surface of carbo-nitriding furnace chamber
It is placed with energizer and places bucket, tetrachloro-ethylene solution and solid particulate matter mixing is placed on energizer and places in bucket, solid particle
Thing is quartz sand or ceramic grain.Solid particulate matter can reduce energizer aequum and improve the volatility of energizer, Jin Erti
Nitriding result high.
Then deoxidation in stove, it is to avoid piston for refrigerator compressor forms oxide layer after being heated.Deoxidation is first using true in stove
Empty pump carries out vacuumize process to carbo-nitriding furnace chamber, and carbo-nitriding furnace chamber pressure is less than 5KPa；Again to carbo-nitriding stove
Nitrogen injection in inner chamber, until malleation, carbo-nitriding furnace chamber pressure is higher than 120KPa.The present embodiment provides protective gas for nitrogen
Gas, and then reduce pollutant emission and improve economy.
Then chemical surface treatment, will be incubated, in holding stage after compressor pump element heats to carbo-nitriding temperature
To lasting injection in carbo-nitriding furnace chamber and nitrogen, ammonia and carbon dioxide.The injection flow of nitrogen is 40L/min-50L/
min。
Carbo-nitriding temperature, insulation duration, the injection flow of ammonia and the injection flow of carbon dioxide can be implemented by table 1:
Table 1
When ammonia injection flow is identical with carbon dioxide injection flow, carbo-nitriding temperature is higher, during required insulation
Length is shorter；Otherwise carbo-nitriding temperature is lower, required insulation duration is more long.When carbo-nitriding temperature is identical, ammonia injection
Flow and carbon dioxide injection flow are lower, and required insulation duration is more long, on the contrary ammonia injection flow and carbon dioxide injection
Flow is bigger, and required insulation duration is shorter.When insulation duration is identical, carbo-nitriding temperature is higher, required ammonia injection
Flow and carbon dioxide injection flow are lower, otherwise carbo-nitriding temperature is lower, required ammonia injection flow and carbon dioxide
Injection flow is higher.
Finally come out of the stove, first stop to injection ammonia and carbon dioxide in carbo-nitriding furnace chamber, then open blower fan and accelerate carbon
Air flow in nitrogen permeation furnace chamber, and then shorten duration, pump body component temperature to be compressed needed for piston for refrigerator compressor cooling
Degree stops to nitrogen injection in carbo-nitriding furnace chamber and by compressor pump component from carbo-nitriding after being down to less than 200 DEG C
Taken out in furnace chamber.
Detected by one piston for refrigerator compressor of random sampling and draw the testing result of table 2
Embodiment eight
The present embodiment is essentially identical with the structure and principle of embodiment one, the no longer burden description of essentially identical part, only retouches
Different place is stated, different place is：Protective gas is the gaseous mixture of ammonia or ammonia and nitrogen.In surface chemistry
Ammonia injection flow-adaptable ground is reduced in process step, but total gas flow rate is more than in injection carbo-nitriding furnace chamber
130L/min, wherein ammonia injection total flow should be greater than 110L/min, and the injection flow of carbon dioxide is 0.5L/min-0.8L/
min.The injection flow of protective gas is 40L/min-50L/min in step of coming out of the stove.
Claims (10)
1. a kind of compressor pump component carbo-nitriding method, it is characterised in that this compressor pump component carbo-nitriding method
Carried out by following sequential steps：
Shove charge first, compressor pump component is put into carbo-nitriding furnace chamber and is placed in carbo-nitriding furnace chamber urge
Penetration enhancer；
Then deoxidation in stove, first passes through to vacuumize carbo-nitriding furnace chamber pressure is evacuated into below 5KPa, then to carbo-nitriding stove
Protective gas is injected in inner chamber until malleation；
Then chemical surface treatment, by compressor pump element heats to 50min-90min is incubated after 570 DEG C -600 DEG C, is protecting
Thermophase in carbo-nitriding furnace chamber to persistently injecting protective gas, ammonia and carbon dioxide；
Finally come out of the stove, first stop to injection ammonia and carbon dioxide in carbo-nitriding furnace chamber, then cool down compressor pump component,
Pump body member temperature to be compressed stops to injection protective gas in carbo-nitriding furnace chamber after being down to less than 200 DEG C and will press
Contracting pump body component takes out from carbo-nitriding furnace chamber.
2. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that the energizer is four
Vinyl chloride solution or citric acid solution.
3. compressor pump component carbo-nitriding method according to claim 1 and 2, it is characterised in that the energizer
Energizer is placed on solid particulate matter mixing to place in bucket, energizer is placed bucket and is placed on carbo-nitriding furnace chamber bottom surface.
4. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that deoxidation step in the stove
In rapid, the air pressure of carbo-nitriding furnace chamber is higher than 120KPa.
5. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that the protective gas is
Nitrogen.
6. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that at the surface chemistry
In reason step, the injection flow of ammonia is 100L/min-110L/min, and the injection flow of carbon dioxide is 0.5L/min-0.8L/
min。
7. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that at the surface chemistry
Manage and come out of the stove in step, the injection flow of nitrogen is 40L/min-50L/min.
8. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that the protective gas is
The gaseous mixture of ammonia or ammonia and nitrogen.
9. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that at the surface chemistry
In reason step, total gas flow rate is more than 130L/min in injection carbo-nitriding furnace chamber, and the injection total flow of wherein ammonia is more than
110L/min, the injection flow of carbon dioxide is 0.5L/min-0.8L/min.
10. compressor pump component carbo-nitriding method according to claim 1, it is characterised in that the step of coming out of the stove
In, the injection flow of protective gas is 40L/min-50L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097122.0A CN106811718A (en) | 2017-02-22 | 2017-02-22 | Compressor pump component carbo-nitriding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097122.0A CN106811718A (en) | 2017-02-22 | 2017-02-22 | Compressor pump component carbo-nitriding method |
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| Publication Number | Publication Date |
|---|---|
| CN106811718A true CN106811718A (en) | 2017-06-09 |
Family
ID=59112735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710097122.0A Pending CN106811718A (en) | 2017-02-22 | 2017-02-22 | Compressor pump component carbo-nitriding method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575642A (en) * | 2020-05-28 | 2020-08-25 | 眉山市三泰铁路车辆配件有限公司 | Gas QPQ multi-component composite instillation agent for cast iron product and instillation process thereof |
| CN115418602A (en) * | 2022-10-14 | 2022-12-02 | 贵州黎阳国际制造有限公司 | Carbonitriding method for austenitic stainless steel |
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| CN101392361A (en) * | 2008-10-31 | 2009-03-25 | 四川航空液压机械厂 | Nitrocarburizing method of martensitic stainless steel and preparation method thereof |
| CN104250720A (en) * | 2014-09-15 | 2014-12-31 | 哈尔滨汽轮机厂有限责任公司 | Method for shortening gas nitriding process time of structural alloy steel |
| CN105369189A (en) * | 2015-11-30 | 2016-03-02 | 太仓久信精密模具股份有限公司 | Nitriding process for H13 die steel |
-
2017
- 2017-02-22 CN CN201710097122.0A patent/CN106811718A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392361A (en) * | 2008-10-31 | 2009-03-25 | 四川航空液压机械厂 | Nitrocarburizing method of martensitic stainless steel and preparation method thereof |
| CN104250720A (en) * | 2014-09-15 | 2014-12-31 | 哈尔滨汽轮机厂有限责任公司 | Method for shortening gas nitriding process time of structural alloy steel |
| CN105369189A (en) * | 2015-11-30 | 2016-03-02 | 太仓久信精密模具股份有限公司 | Nitriding process for H13 die steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575642A (en) * | 2020-05-28 | 2020-08-25 | 眉山市三泰铁路车辆配件有限公司 | Gas QPQ multi-component composite instillation agent for cast iron product and instillation process thereof |
| CN115418602A (en) * | 2022-10-14 | 2022-12-02 | 贵州黎阳国际制造有限公司 | Carbonitriding method for austenitic stainless steel |
| CN115418602B (en) * | 2022-10-14 | 2023-09-22 | 贵州黎阳国际制造有限公司 | Carbonitriding method for austenitic stainless steel |
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Application publication date: 20170609 |
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