CN106498340A - Machinery part surface processing method - Google Patents
Machinery part surface processing method Download PDFInfo
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- CN106498340A CN106498340A CN201610994593.7A CN201610994593A CN106498340A CN 106498340 A CN106498340 A CN 106498340A CN 201610994593 A CN201610994593 A CN 201610994593A CN 106498340 A CN106498340 A CN 106498340A
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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
- C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
- C23C8/58—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 liquids, e.g. salt baths, liquid suspensions more than one element being applied in more than one step
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Machinery part surface processing method, belongs to metal surface treatment technology, more particularly to a kind of for machinery part surface processing method；Technical problem to be solved is can to improve hardness, corrosion-resistant, inexpensive there is provided one kind, at the same environmental sound for method that larger coal mine machinery piece surface is processed；The technical scheme for being adopted for：Processed workpiece is preheated through the first step, second step is nitrogenized, the 3rd step is aoxidized, salt bath is obtained after the cooling of the 4th step and process workpiece；The surface of the work corrosion resistance that the present invention is processed improves more than 5 times than chromium plating and nickel plating, higher more than 10 times than zinc-plated, process than turning blue high more than 20 times, case hardness reaches more than 50HRC, far above chromium plating and nickel plating and process case hardness of turning blue, meanwhile, the method cost of this surface treatment is relatively low, environmental sound, can be widely used for the process of larger volume coal mine machinery piece surface simultaneously.
Description
Technical field
Machinery part surface processing method of the present invention, belongs to metal surface treatment technology, more particularly to a kind of for machinery
Piece surface processing method.Machinery part surface processing method of the present invention, belongs to metal surface treatment technology, more particularly to a kind of
For machinery part surface processing method.
Background technology
As use environment is severe, reliability requirement is high, coal mine machinery it requires that equipment part is wear-resistant, anticorrosive,
Primarily now using chromium plating or nickel plating process, the methods such as process of turning blue, but said method is present, and case hardness is relatively low, corrosion resistance
Poor, relatively costly the shortcomings of.Domestic common Quench-Polish-Quench technology technology, at less surface of the work
Reason, the such as surface treatment of machine tool, due to due to salt bath formula, if nitriding temperature is too low, it is impossible to formed deep enough
The infiltration layer of degree；And nitriding temperature is too high, surface porosity layer is serious, and temperature exceedes temperature can then reduce the hardness of matrix, with
When conventional nitridation salt in cyanide have severe toxicity, have larger harm to environment.Coal mine machinery is as use environment is severe, reliability
Have high demands, it requires that equipment part is wear-resistant, anticorrosive, primarily now using chromium plating or nickel plating process, the side such as process of turning blue
Method, but said method is present that case hardness is relatively low, corrosion resistance is poor, relatively costly the shortcomings of.Domestic common salt bath is combined
Treatment technology, is processed mainly for less surface of the work, such as the surface treatment of machine tool, due to salt bath formula
Reason, if nitriding temperature is too low, it is impossible to form the infiltration layer of enough depth；And nitriding temperature is too high, surface porosity layer is serious, temperature
Degree exceedes temperature can then reduce the hardness of matrix, while the cyanide in conventional nitridation salt has severe toxicity, environment be had larger
Harm.
Content of the invention
The present invention is in order to overcome the shortcomings of that oneself has technology, there is provided one kind can improve hardness, corrosion-resistant, inexpensive, while
Environmental sound for method that larger coal mine machinery piece surface is processed.The present invention is in order to overcome oneself to have technology not
Foot, there is provided one kind can improve hardness, corrosion-resistant, inexpensive, at the same environmental sound for larger coal mine machinery part
The method of surface treatment.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is to follow the steps below：In order to solve
Above-mentioned technical problem, the technical solution used in the present invention are to follow the steps below：
The first step, preheats the first step, preheating
Processed workpiece is put in external-heat crucible electric furnace, 520 DEG C of keeping temperature, 30 minutes time；By processed work
Part is put in external-heat crucible electric furnace, 520 DEG C of keeping temperature, 30 minutes time；
Second step, nitrogenizes second step, nitridation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, the liquid immersed after nitridation salt melting
In body, 580 DEG C of keeping temperature, 2.8 hours time；Processed workpiece is put into the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving
Interior, in the liquid immersed after nitridation salt melting, 580 DEG C of keeping temperature, 2.8 hours time；
3rd step, aoxidizes the 3rd step, oxidation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, the liquid immersed after saline oxide melting
In body, 440 DEG C of keeping temperature, 60 minutes time；Processed workpiece is put into the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving
Interior, in the liquid immersed after saline oxide melting, 440 DEG C of keeping temperature, 60 minutes time；
4th step, cools down the 4th step, cooling
Processed workpiece is taken out from crucible electric furnace, in air, room temperature is naturally cooled to, salt bath is obtained and is processed workpiece；Will
Processed workpiece is taken out from crucible electric furnace, naturally cools to room temperature in air, is obtained salt bath and is processed workpiece；The nitridation salt
Raw material is prepared by following weight portion：50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, 10 parts of potassium hydroxide；
The raw material of the nitridation salt is prepared by following weight portion：50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, hydrogen
10 parts of potassium oxide；The raw material of the saline oxide is prepared by following weight portion：20 parts of sodium nitrite, 15 parts of sodium nitrate, potassium nitrate 15
Part, 50 parts of sodium hydroxide.The raw material of the saline oxide is prepared by following weight portion：20 parts of sodium nitrite, 15 parts of sodium nitrate, nitric acid
15 parts of potassium, 50 parts of sodium hydroxide.
Salt bath process workpiece sequentially pass through cleaning desalt, dry, immersion oil process obtain finished work-piece.Salt bath process workpiece according to
Secondary desalt, dry through over cleaning, immersion oil process obtain finished work-piece.
The present invention is had the advantages that compared with prior art.The present invention has following beneficial compared with prior art
Effect.
The surface of the work corrosion resistance processed using invention improves more than 5 times than chromium plating and nickel plating, higher more than 10 times than zinc-plated,
Than turning blue, process is high more than 20 times, and case hardness reaches more than 50HRC, far above chromium plating and nickel plating and process case hardness of turning blue,
Meanwhile, the method cost of this surface treatment is relatively low, while environmental sound, can be widely used for larger volume coal mine machinery parts list
Face is processed.
The surface of the work corrosion resistance processed using invention improves more than 5 times than chromium plating and nickel plating, higher more than 10 times than zinc-plated,
Than turning blue, process is high more than 20 times, and case hardness reaches more than 50HRC, far above chromium plating and nickel plating and process case hardness of turning blue,
Meanwhile, the method cost of this surface treatment is relatively low, while environmental sound, can be widely used for larger volume coal mine machinery parts list
Face is processed.
Specific embodiment
Machinery part surface processing method, follows the steps below：Machinery part surface processing method, according to following step
Suddenly carry out：
The first step, preheats the first step, preheating
Processed workpiece is put in external-heat crucible electric furnace, 520 DEG C of keeping temperature, 30 minutes time；By processed work
Part is put in external-heat crucible electric furnace, 520 DEG C of keeping temperature, 30 minutes time；
Second step, nitrogenizes second step, nitridation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, the liquid immersed after nitridation salt melting
In body, 580 DEG C of keeping temperature, 2.8 hours time；Processed workpiece is put into the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving
Interior, in the liquid immersed after nitridation salt melting, 580 DEG C of keeping temperature, 2.8 hours time；
3rd step, aoxidizes the 3rd step, oxidation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, the liquid immersed after saline oxide melting
In body, 440 DEG C of keeping temperature, 60 minutes time；Processed workpiece is put into the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving
Interior, in the liquid immersed after saline oxide melting, 440 DEG C of keeping temperature, 60 minutes time；
4th step, cools down the 4th step, cooling
Processed workpiece is taken out from crucible electric furnace, in air, room temperature is naturally cooled to, salt bath is obtained and is processed workpiece；Will
Processed workpiece is taken out from crucible electric furnace, naturally cools to room temperature in air, is obtained salt bath and is processed workpiece；The nitridation salt
Raw material is prepared by following weight portion：50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, 10 parts of potassium hydroxide；
The raw material of the nitridation salt is prepared by following weight portion：50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, hydrogen
10 parts of potassium oxide；The raw material of the saline oxide is prepared by following weight portion：20 parts of sodium nitrite, 15 parts of sodium nitrate, potassium nitrate 15
Part, 50 parts of sodium hydroxide.The raw material of the saline oxide is prepared by following weight portion：20 parts of sodium nitrite, 15 parts of sodium nitrate, nitric acid
15 parts of potassium, 50 parts of sodium hydroxide.
Salt bath process workpiece sequentially pass through cleaning desalt, dry, immersion oil process obtain finished work-piece.Salt bath process workpiece according to
Secondary desalt, dry through over cleaning, immersion oil process obtain finished work-piece.
Wherein cleaning is desalted, dry and immersion oil processing step is prior art.Wherein cleaning is desalted, is dried and immersion oil technique
Step is prior art.
Embodiment 1
The first step：The preheating first step is carried out to colliery gear part：Colliery gear part is preheated
Colliery gear part is put in external-heat crucible electric furnace, is kept for 520 DEG C of earthenware kettle temperature, 30 minutes time.Will
Colliery gear part is put in external-heat crucible electric furnace, is kept for 520 DEG C of earthenware kettle temperature, 30 minutes time.
Second step：Nitrogen treatment second step is carried out to colliery gear part：Nitrogen treatment is carried out to colliery gear part
By 50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, 10 parts of potassium hydroxide are put into external-heat earthenware
In pot electric furnace, it is 580 DEG C to adjust furnace temperature, is allowed to melt.Colliery gear part is taken out from external-heat crucible electric furnace, is put
Enter in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, in the nitridation salt liquid after immersion melting, keep earthenware kettle temperature 580
DEG C, immerse 2.8 hours time.By 50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, 10 parts of potassium hydroxide are put
Enter in external-heat crucible electric furnace, it is 580 DEG C to adjust furnace temperature, is allowed to melt.By colliery gear part from external-heat crucible electricity
Take out in stove, be put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, in the nitridation salt liquid after immersion melting, keep earthenware
580 DEG C of kettle temperature, immerses 2.8 hours time.
3rd step：The 3rd step of oxidation processes is carried out to colliery gear part：Oxidation processes are carried out to colliery gear part
By 20 parts of sodium nitrite, 15 parts of sodium nitrate, 15 parts of potassium nitrate, 50 parts of sodium hydroxide are put into external-heat crucible electric furnace
Interior, it is 440 DEG C to adjust furnace temperature, is allowed to melt.By colliery gear part from the external-heat crucible electricity equipped with liquid nitrogen salt dissolving
Take out in stove, be put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, in immersion saline oxide liquid, keep earthenware kettle temperature
440 DEG C, immerse 60 minutes time.By 20 parts of sodium nitrite, 15 parts of sodium nitrate, 15 parts of potassium nitrate, 50 parts of sodium hydroxide are put into outer
In hot type crucible electric furnace, it is 440 DEG C to adjust furnace temperature, is allowed to melt.By colliery gear part from equipped with liquid nitrogen salt dissolving
Take out in external-heat crucible electric furnace, be put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, in immersion saline oxide liquid, protect
440 DEG C of earthenware kettle temperature is held, 60 minutes time is immersed.
4th step：Colliery gear part is carried out cooling down the 4th step：Colliery gear part is cooled down
Colliery gear part is taken out from the crucible electric furnace for loading saline oxide, is placed in atmosphere, is naturally cooled to room
Temperature, obtains salt bath and processes workpiece.Colliery gear part is taken out from the crucible electric furnace for loading saline oxide, is placed in atmosphere,
Room temperature is naturally cooled to, salt bath is obtained and is processed workpiece.
Finally salt bath process workpiece is desalted, is dried through over cleaning, immersion oil process obtains finished product colliery gear part.Finally
Salt bath process workpiece is desalted, is dried through over cleaning, immersion oil process obtains finished product colliery gear part.
Embodiment 2
The first step：The preheating first step is carried out to hydraulic support of coal mine and cylinder sleeve：Hydraulic support of coal mine and cylinder sleeve are carried out pre-
Heat
Hydraulic support of coal mine and cylinder sleeve are put in external-heat crucible electric furnace, are kept for 520 DEG C of earthenware kettle temperature, 30 points of time
Clock.Hydraulic support of coal mine and cylinder sleeve are put in external-heat crucible electric furnace, are kept for 520 DEG C of earthenware kettle temperature, 30 minutes time.
Second step：Nitrogen treatment second step is carried out to hydraulic support of coal mine and cylinder sleeve：Hydraulic support of coal mine and cylinder sleeve are entered
Row nitrogen treatment
By 50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, 10 parts of potassium hydroxide are put into external-heat earthenware
In pot electric furnace, it is 580 DEG C to adjust furnace temperature, is allowed to melt.By hydraulic support of coal mine and cylinder sleeve from external-heat crucible electric furnace
Take out, be put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, in the nitridation salt liquid after immersion melting, keep in crucible
580 DEG C of temperature, immerses 2.8 hours time.By 50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, hydroxide
10 parts of potassium is put in external-heat crucible electric furnace, and it is 580 DEG C to adjust furnace temperature, is allowed to melt.By hydraulic support of coal mine and cylinder sleeve
Take out from external-heat crucible electric furnace, be put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, the nitridation after immersion melting
In salt liquid, 580 DEG C of earthenware kettle temperature is kept, immerse 2.8 hours time.
3rd step：The 3rd step of oxidation processes is carried out to hydraulic support of coal mine and cylinder sleeve：Hydraulic support of coal mine and cylinder sleeve are entered
Row oxidation processes
By 20 parts of sodium nitrite, 15 parts of sodium nitrate, 15 parts of potassium nitrate, 50 parts of sodium hydroxide are put into external-heat crucible electric furnace
Interior, it is 440 DEG C to adjust furnace temperature, is allowed to melt.By hydraulic support of coal mine and cylinder sleeve from the external-heat equipped with liquid nitrogen salt dissolving
Take out in crucible electric furnace, be put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, in immersion saline oxide liquid, keep crucible
440 DEG C of interior temperature, immerses 60 minutes time.By 20 parts of sodium nitrite, 15 parts of sodium nitrate, 15 parts of potassium nitrate, 50 parts of sodium hydroxide
It is put in external-heat crucible electric furnace, it is 440 DEG C to adjust furnace temperature, is allowed to melt.By hydraulic support of coal mine and cylinder sleeve from being equipped with
Take out in the external-heat crucible electric furnace of liquid nitrogen salt dissolving, be put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, immerse oxygen
In salt dissolving liquid, 440 DEG C of earthenware kettle temperature is kept, immerse 60 minutes time.
4th step：Hydraulic support of coal mine and cylinder sleeve are carried out cooling down the 4th step：Hydraulic support of coal mine and cylinder sleeve are carried out cold
But
Hydraulic support of coal mine and cylinder sleeve are taken out from the crucible electric furnace for loading saline oxide, is placed in atmosphere, naturally cold
But to room temperature, obtain salt bath and process workpiece.Hydraulic support of coal mine and cylinder sleeve are taken out from the crucible electric furnace for loading saline oxide, is put
Put in atmosphere, naturally cool to room temperature, obtain salt bath and process workpiece.
Finally salt bath process workpiece is desalted, is dried through over cleaning, immersion oil process obtains finished product hydraulic support of coal mine and cylinder
Set.Finally salt bath process workpiece is desalted, is dried through over cleaning, immersion oil process obtains finished product hydraulic support of coal mine and cylinder sleeve.
Claims (2)
1. machinery part surface processing method, it is characterised in that follow the steps below：
The first step, preheating
Processed workpiece is put in external-heat crucible electric furnace, 520 DEG C of keeping temperature, 30 minutes time；
Second step, nitridation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid nitrogen salt dissolving, the liquid immersed after nitridation salt melting
In, 580 DEG C of keeping temperature, 2.8 hours time；
3rd step, oxidation
Processed workpiece is put in the external-heat crucible electric furnace equipped with liquid oxygen salt dissolving, the liquid immersed after saline oxide melting
In, 440 DEG C of keeping temperature, 60 minutes time；
4th step, cooling
Processed workpiece is taken out from crucible electric furnace, in air, room temperature is naturally cooled to, salt bath is obtained and is processed workpiece；The nitrogen
The raw material of salt dissolving is prepared by following weight portion：50 parts of carbamide, 20 parts of potassium carbonate, 10 parts of sodium carbonate, 10 parts of potassium chloride, potassium hydroxide
10 parts；The raw material of the saline oxide is prepared by following weight portion：20 parts of sodium nitrite, 15 parts of sodium nitrate, 15 parts of potassium nitrate, hydrogen-oxygen
Change 50 parts of sodium.
2. according to claim 1 machinery part surface processing method, it is characterised in that methods described is also included at the salt bath
Science and engineering part sequentially pass through cleaning desalt, dry, immersion oil process obtain finished work-piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994593.7A CN106498340A (en) | 2016-11-11 | 2016-11-11 | Machinery part surface processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994593.7A CN106498340A (en) | 2016-11-11 | 2016-11-11 | Machinery part surface processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106498340A true CN106498340A (en) | 2017-03-15 |
Family
ID=58323952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610994593.7A Withdrawn CN106498340A (en) | 2016-11-11 | 2016-11-11 | Machinery part surface processing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106498340A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287554A (en) * | 2017-07-12 | 2017-10-24 | 合肥康之恒机械科技有限公司 | A kind of surface processing method for coal mining mechanical parts |
| CN108149187A (en) * | 2017-12-26 | 2018-06-12 | 苏州贝尔纳德铁路设备有限公司 | A kind of wear-resisting preparation method for pulling out bar of hydraulic track-switching device |
| CN109161840A (en) * | 2018-09-10 | 2019-01-08 | 义马丰达设备有限责任公司 | Prevent the two opposite methods and its valve member for moving back and forth the occlusion of stainless steel valve member |
-
2016
- 2016-11-11 CN CN201610994593.7A patent/CN106498340A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287554A (en) * | 2017-07-12 | 2017-10-24 | 合肥康之恒机械科技有限公司 | A kind of surface processing method for coal mining mechanical parts |
| CN108149187A (en) * | 2017-12-26 | 2018-06-12 | 苏州贝尔纳德铁路设备有限公司 | A kind of wear-resisting preparation method for pulling out bar of hydraulic track-switching device |
| CN109161840A (en) * | 2018-09-10 | 2019-01-08 | 义马丰达设备有限责任公司 | Prevent the two opposite methods and its valve member for moving back and forth the occlusion of stainless steel valve member |
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Application publication date: 20170315 |