CN109680244A - A kind of surface treatment method of damper front fork cylinder - Google Patents
A kind of surface treatment method of damper front fork cylinder Download PDFInfo
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- CN109680244A CN109680244A CN201910007677.0A CN201910007677A CN109680244A CN 109680244 A CN109680244 A CN 109680244A CN 201910007677 A CN201910007677 A CN 201910007677A CN 109680244 A CN109680244 A CN 109680244A
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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
- C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
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Abstract
The present invention provides a kind of surface treatment methods of damper front fork cylinder, infiltration processing first is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, treated damper front fork cylinder penetration enhancer is activated with lanthanum yttrium again to activate, then first time oxonium ion infiltration processing is carried out with oxonium ion penetration enhancer, it is polished after cooling cleaning later, second of oxonium ion infiltration processing is carried out with oxonium ion penetration enhancer, finally carries out Seal treatment and immersion oil with sealer.The damper front fork cylinder handled using the method for the present invention, first infiltration processing is carried out with carbon nitrogen lanthanum ruthenium ion penetration enhancer, being formed has certain thickness compound layer and diffusion layer, it is made of solid solution of the carboritride and nitrogen of metallic element in iron, hardness and corrosion resistance with higher, compared with common chrome-plated process, salt fog corrosion resistance is from the improve for 24 hours of common chromium plating process to 240h, corrosion resistance provides nearly 10 times, meanwhile round-trip fatigue life is promoted to 1,000,000 times from 300,000 times of common chrome-plated process.
Description
Technical field
The invention belongs to field of metal surface treatment technology, and in particular to a kind of surface treatment side of damper front fork cylinder
Method.
Background technique
Damper front fork cylinder is as a part indispensable in mechanical composition, for when inhibiting rebound after spring shock-absorbing
Concussion and the impact from road surface.The vehicles such as automobile, motor are widely used in, to accelerate the decaying of vehicle frame and body vibrations,
To improve the ride performance of automobile etc..The reliability of damper front fork cylinder depends on the structure and material of damper front fork cylinder,
Damper front fork cylinder mainly uses non-hardened and tempered steel is machined to form at present.
The surface treatment of major part damper front fork cylinder uses chromium plating process at present, and addition butter is moistened when in use
It is sliding, to improve poor, the not wear-resisting problem of corrosion resistance of surface existing for non-hardened and tempered steel material itself.However, to damper front fork cylinder
Surface carries out chromium plating process, will lead to: (1) the chromium plating process salt fog time used after the completion of damper front fork cylinder is no more than
24h；(2) chrome layer can generate peeling and cause heavy metal pollution when using；(3) chrome-plated process is seriously polluted.
To sum up, need to develop a kind of new damper front fork cylinder surface treatment method, to solve existing damper front fork cylinder
Corrosion resistance of surface is poor and use process in the flaky problem in surface.
Summary of the invention
To solve in the prior art, damper front fork cylinder corrosion resistance of surface is poor, and chrome-plated surface is flaky in use process
Problem, the present invention provides a kind of surface treatment methods of damper front fork cylinder.
To achieve the above object, the invention adopts the following technical scheme:
A kind of surface treatment method of damper front fork cylinder, comprising the following steps:
(1) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer；
(2) step (1) treated damper front fork cylinder penetration enhancer is activated with lanthanum yttrium to activate；
(3) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer；
(4) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing；
(5) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer；
The temperature that the oxonium ion penetrates into processing is 380~410 DEG C, and the time is 30~40min；
The material of the damper front fork cylinder is No. 20 steel.
Preferably, it is 390~400 DEG C that the oxonium ion, which penetrates into the temperature of processing, time 30min.
Preferably, the surface treatment method further comprises before step (1), to the table of the damper front fork cylinder
Face is processed by shot blasting, treated surface roughness Ra≤0.2.
Preferably, the surface treatment method further comprises carrying out before step (2) to the damper front fork cylinder
The pre-heat treatment.
It is further preferred that the method for the pre-heat treatment are as follows: damper front fork cylinder is put into air heating tank, with 5
The speed of~10 DEG C/min is warming up to 280~300 DEG C, keeps the temperature 20~25min.
Preferably, step (1) temperature for penetrating into processing is 450~470 DEG C, and the infiltration time is 100~160min.
Preferably, carbon nitrogen lanthanum ruthenium ion penetration enhancer includes the component of following parts by weight meter:
25~30 parts of KOCN,
NaHCO330~35 parts,
Sr(OH)25~10 parts,
5~15 parts of KCl,
5%-10 parts of NaCl,
K2SO43~5 parts,
ErCl3·6H21~3 part of O,
Li2B4O75~10 parts,
Ce(NO3)3·6H21~3 part of O,
YbCl30.01~0.02 part,
YCl30.05~0.1 part,
La2(CO3)30.5~1.0 part.
Preferably, the temperature of step (2) described activation is 420~450 DEG C, and activation time is 50~70min.
It is further preferred that the temperature of step (2) described activation is 425~435 DEG C, activation time 60min.
Preferably, lanthanum yttrium activation penetration enhancer includes the component of following mass percent meter:
30~40 parts of KOCN,
NaHCO310~15 parts,
K25~15 parts of S,
14~25 parts of NaCl,
Na2SiO35~8 parts of 9H2O,
K2SO31~3 part,
Ce(NO3)3·6H2L~3 part O,
YbCl30.01~0.02 part,
Li2B4O75~10 parts,
3~5 parts of KCl,
0.3~1 part of YCl3,
La2(CO3)31~1.5 part.
Preferably, the oxonium ion penetration enhancer includes the component of following parts by weight meter:
25~35 parts of NaOH,
NaNO215~25 parts,
30~40 parts of KCl,
NH410~20 parts of Cl,
La2(CO3)30.5~1.0 part.
Preferably, step (5) described sealer includes the component of following parts by weight meter:
35~40 parts of petroleum solvent (CAS.NO 64742-57-0),
40~50 parts of hydrogen weight base oil (CAS.NO:64742-52-5),
14~20 parts of sulfoacid calcium (CAS.NO 68603-42-9).
Roughness does not reach requirement after step (3) aoxidizes for the first time, so being polished after first time aoxidizes, keeps it thick
Rugosity reaches requirement, then carries out second of oxidation.
In the present invention, infiltration processing is carried out first with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the purpose is to make carbon nitrogen lanthanum ruthenium ion
Effective ion in penetration enhancer diffuses into inside damper front fork cylinder, so that being formed has certain thickness compound layer and diffusion
Layer, is made of solid solution of the carboritride and nitrogen of metallic element in iron, hardness with higher, corrosion resistance and anti-
Thread gluing.KCl and K are added in carbon nitrogen lanthanum ruthenium ion penetration enhancer in the present invention2SO4, reaction efficiency can be improved, make infiltration layer more
Uniformly.
It recycles lanthanum yttrium activation penetration enhancer to be activated, metal ion and nonmetallic ion lanthanum yttrium can be promoted to before damper
The more deep diffusion in cylinder matrix direction is pitched, to increase compisite seeping layer thickness, to improve the anti-fatigue performance of plate.The present invention
K is added in middle lanthanum yttrium activation penetration enhancer2S and K2SO3, the activity of penetration enhancer can be improved, shorten the production cycle.
It recycles oxonium ion penetration enhancer to carry out infiltration processing later, remains on the carbon nitrogen lanthanum ruthenium ion on damper front fork cylinder surface
The infiltration layer that penetration enhancer and lanthanum yttrium activation penetration enhancer react, is formed is dissolved in compound lattice for oxygen with gap form, and another part oxygen exists
Surface forms metal oxide layer, to further increase the hardness and anti-corrosion resisting property of plate.Plate surface forms compound layer
And metal oxide layer, the corrosion resistance of damper front fork cylinder is not only greatly improved, and treated that plate also has is good
Good mechanical property, and cost performance is high, there are no pollution to the environment.It is added to KCl in oxonium ion penetration enhancer in the present invention, compared to existing
Technology, almost zero-emission, more environmentally-friendly after reaction.
KOCN, NaHCO is added in the present invention in penetration enhancer3、NaOH、NH4Cl、NaNO2、Li2B4O7Etc. components, these components
Fusing point is lower, can substantially drag down the fusing point of ion penetration enhancer, increase the mobility of penetration enhancer, makes the more uniform stabilization of quality layer,
And can be handled at lower temperatures, and can be improved the diffuser efficiency of carbon nitrogen lanthanum ruthenium ion in the base, reduce diffusion
Activation energy.It is 450~470 DEG C that carbon nitrogen lanthanum ruthenium ion of the present invention, which penetrates into temperature, and lanthanum yttrium activation temperature is 420~450
℃.I.e. carbon nitrogen lanthanum yttrium penetrates into and the treatment temperature section of lanthanum yttrium activation is at 420~470 DEG C, and the temperature range is public far below
That opens is processed similarly technology, can be effectively reduced the condition of reaction, achievees the purpose that energy-saving.It is prepared in above-mentioned temperature range
Damper front fork cylinder will not be deformed, precision is high, and the service life is long.In surface treatment method provided by the present invention, each step
For constant temperature, each penetration enhancer can activate under cryogenic, can guarantee effective infiltration of carbon nitrogen lanthanum ruthenium ion, and do not influence
The size and precision of damper front fork cylinder, expand use scope.
Sr, Er, Yb, Ce ion being added in penetration enhancer of the present invention can effectively improve and penetrate into the diffusion of ion in the base
Efficiency reduces diffusion activation energy, but content ratio need to be suitable for.When Ce is more than 3.5%, the diffuser efficiency of C in the base can be inhibited.
Penetration enhancer fusing point of the invention is low, and stability is good, and ion cooperates, and can effectively ensure that infiltration effect, so as to guarantee to produce
Quality.By the way that nonmetalloid and minor metallic element to be penetrated into the surface into plate, the surface of plate formed it is carbon containing,
Nitrogen, oxygen, lanthanum, yttrium infiltration layer, make plate matrix surface formed wearing layer, not only greatly improve the longevity of damper front fork cylinder
Life, and plate after processing has good mechanical property, and the precision of plate is not influenced by being surface-treated.And due to
When oxonium ion penetrates into, the harmful ions such as cyanogen root of surface residual are also oxidized simultaneously, are generated to the non-harmful carbonate of environment
Substance has good social and economic benefit to realize the purpose of protection environment.
Beneficial effects of the present invention
1, the damper front fork cylinder handled using the method for the present invention, first carries out infiltration processing with carbon nitrogen lanthanum ruthenium ion penetration enhancer,
Being formed has certain thickness compound layer and diffusion layer, by solid solution of the carboritride and nitrogen of metallic element in iron
Composition, hardness and corrosion resistance with higher, compared with common chrome-plated process, salt fog corrosion resistance is from common chromium plating process
It being improved for 24 hours to 240h, corrosion resistance provides nearly 10 times, meanwhile, 30 ten thousand promotions of the round-trip fatigue life from common chrome-plated process
To 1,000,000 times；
2, the damper front fork cylinder handled by chrome-plated process, overlay coating can peel off in use, make to environment
At secondary heavy metal pollution, the processing method provided by the present invention solves the problems, such as this, and infiltration layer will not peel off, and in infiltration layer containing only
There are C, N and O element；
3, it is being carried out penetrating into processing and then activated using lanthanum yttrium activation penetration enhancer, energy with carbon nitrogen lanthanum ruthenium ion penetration enhancer
Enough promote the diffusion that metal ion and nonmetallic ion lanthanum yttrium are more deep to damper front fork cylinder matrix direction, increases compound
Alloying layer thickness improves the anti-fatigue performance of plate, carries out infiltration processing with oxonium ion penetration enhancer, remains on damper front fork cylinder table
The infiltration layer that the carbon nitrogen lanthanum ruthenium ion penetration enhancer in face and lanthanum yttrium activation penetration enhancer react, is formed dissolves in compound lattice for oxygen with gap form
In, another part oxygen forms metal oxide layer on surface, to further improve the hardness on damper front fork cylinder surface and resist
Corrosion resisting property；
4, processing method temperature provided by the present invention is lower, and damper front fork cylinder will not be deformed in treatment process,
Machining accuracy is unaffected, and is to ensure that effective infiltration of carbon nitrogen lanthanum ruthenium ion under cryogenic；
5, processing method cost performance provided by the present invention is high, and due to when oxonium ion penetrates into, the cyanogen of surface residual
The harmful ions such as root are also oxidized simultaneously, are generated to the non-harmful carbonate material of environment, to realize the mesh of protection environment
's.
Specific embodiment
The following is specific embodiments of the present invention, and further retouches to technical solution of the present invention work in conjunction with the embodiments
It states, however, the present invention is not limited to these examples.
Embodiment 1
Present embodiments provide the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
450 DEG C, the infiltration time is 100min；
(2) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
420 DEG C, activation time 50min；
(3) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer,
The temperature that oxonium ion penetrates into processing is 380 DEG C, time 30min；
(4) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing, stating oxonium ion to penetrate into the temperature of processing is 380 DEG C, time 30min；
(5) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Embodiment 2
Present embodiments provide the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
470 DEG C, the infiltration time is 160min；
(2) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
450 DEG C, activation time 70min；
(3) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer,
The temperature that oxonium ion penetrates into processing is 410 DEG C, time 40min；
(4) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing, stating oxonium ion to penetrate into the temperature of processing is 410 DEG C, time 40min；
(5) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Embodiment 3
Present embodiments provide the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
460 DEG C, the infiltration time is 130min；
(2) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
430 DEG C, activation time 60min；
(3) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer,
The temperature that oxonium ion penetrates into processing is 390 DEG C, time 35min；
(4) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing, stating oxonium ion to penetrate into the temperature of processing is 390 DEG C, time 35min；
(5) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Embodiment 4
Present embodiments provide the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) surface of the damper front fork cylinder is processed by shot blasting, treated surface roughness Ra≤0.2；
(2) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
460 DEG C, the infiltration time is 130min；
(3) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
430 DEG C, activation time 60min；
(4) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer,
The temperature that oxonium ion penetrates into processing is 390 DEG C, time 35min；
(5) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing, stating oxonium ion to penetrate into the temperature of processing is 390 DEG C, time 35min；
(6) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Embodiment 5
Present embodiments provide the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) surface of the damper front fork cylinder is processed by shot blasting, treated surface roughness Ra≤0.2；
(2) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
460 DEG C, the infiltration time is 130min；
(3) the pre-heat treatment, method are as follows: put damper front fork cylinder are carried out to step (2) treated damper front fork cylinder
Enter in air heating tank, is warming up to 290 DEG C with the speed of 7 DEG C/min, keeps the temperature 22min.
(4) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
430 DEG C, activation time 60min；
(5) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer,
The temperature that oxonium ion penetrates into processing is 390 DEG C, time 35min；
(6) it will polish after the cooling cleaning of step (3) treated damper front fork cylinder, carried out for the second time with oxonium ion penetration enhancer
Oxonium ion infiltration processing, stating oxonium ion to penetrate into the temperature of processing is 390 DEG C, time 35min；
(7) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Embodiment 6
Carbon nitrogen lanthanum ruthenium ion diffusion agent formulation is present embodiments provided, the component of following parts by weight meter is specifically included:
27 parts of KOCN, NaHCO332 parts, Sr (OH)27 parts, 10 parts of KCl, 7 parts of NaCl, K2SO44 parts, ErCl3·
6H2O2 parts, Li2B4O77 parts, Ce (NO3)3·6H22 parts of O, YbCl30.015 part, YCl30.07 part, La2(CO3)30.7 part.
Embodiment 7
Lanthanum yttrium activation diffusion agent formulation is present embodiments provided, the component of following parts by weight meter is specifically included:
35 parts of KOCN, NaHCO312 parts, K2S10 parts, 20 parts of NaCl, Na2SiO37 parts of 9H2O, K2SO32 parts, Ce
(NO3)3·6H22 parts of O, YbCl30.015 part, Li2B4O78 parts, 4 parts of KCl, 0.6 part of YCl3, La2(CO3)31.3 part.
Embodiment 8
Oxonium ion diffusion agent formulation is present embodiments provided, the component of following parts by weight meter is specifically included:
30 parts of NaOH, NaNO220 parts, 35 parts of KCl, NH415 parts of Cl, La2(CO3)30.8 part.
Embodiment 9
Closing agent prescription is present embodiments provided, the component of following parts by weight meter is specifically included:
37 parts of petroleum solvent (CAS.NO 64742-57-0), 45 parts of hydrogen weight base oil (CAS.NO:64742-52-5), sulphur
Sour 17 parts of calcium (CAS.NO 68603-42-9).
Comparative example 1
This comparative example provides the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) surface of the damper front fork cylinder is processed by shot blasting, treated surface roughness Ra≤0.2；
(2) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
460 DEG C, the infiltration time is 130min；
(3) the pre-heat treatment, method are as follows: put damper front fork cylinder are carried out to step (2) treated damper front fork cylinder
Enter in air heating tank, is warming up to 290 DEG C with the speed of 7 DEG C/min, keeps the temperature 22min.
(4) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
430 DEG C, activation time 60min；
(5) the damper front fork cylinder after step (2) activation is subjected to oxonium ion infiltration processing, oxonium ion with oxonium ion penetration enhancer
The temperature for penetrating into processing is 390 DEG C, time 35min；
(6) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Comparative example 2
This comparative example provides the surface treatment method of damper front fork cylinder, comprising the following steps:
(1) surface of the damper front fork cylinder is processed by shot blasting, treated surface roughness Ra≤0.2；
(2) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer, the temperature for penetrating into processing is
460 DEG C, the infiltration time is 130min；
(3) the pre-heat treatment, method are as follows: put damper front fork cylinder are carried out to step (2) treated damper front fork cylinder
Enter in air heating tank, is warming up to 290 DEG C with the speed of 7 DEG C/min, keeps the temperature 22min.
(4) step (1) treated damper front fork cylinder is activated penetration enhancer with lanthanum yttrium to activate, the temperature of activation is
430 DEG C, activation time 60min；
(5) the damper front fork cylinder after step (2) activation is subjected to oxonium ion infiltration processing, oxonium ion with oxonium ion penetration enhancer
The temperature for penetrating into processing is 390 DEG C, time 70min；
(6) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer.
Detect example
This test example tests the method using Examples 1 to 5 and comparative example 1 and 2, is mentioned respectively with embodiment 6~9
After the reagent of confession handles damper front fork cylinder surface, the salt fog corrosion resistance on damper front fork cylinder surface and round-trip tired longevity
Life, reference examples are the damper front fork cylinder of common chrome-plated process.Test result is as shown in table 1.
1 salt fog corrosion resistance of table and fatigue life test result
| Number | Salt fog corrosion resistance (observes the time of corrosion, h in surface) | Round-trip fatigue life (ten thousand times) |
| Embodiment 1 | ≥240 | ≥100 |
| Embodiment 2 | ≥180 | ≥70 |
| Embodiment 3 | ≥180 | ≥85 |
| Embodiment 4 | ≥240 | ≥120 |
| Embodiment 5 | ≥180 | ≥75 |
| Comparative example 1 | ≥120 | ≥100 |
| Comparative example 2 | ≥120 | ≥85 |
| Reference examples | ≥24 | ≥30 |
The damper front fork cylinder handled using the method for the present invention, first carries out infiltration processing, shape with carbon nitrogen lanthanum ruthenium ion penetration enhancer
At with certain thickness compound layer and diffusion layer, by solid solution group of the carboritride and nitrogen of metallic element in iron
At, hardness and corrosion resistance with higher, compared with common chrome-plated process, salt fog corrosion resistance from common chromium plating process for 24 hours
It improving to 240h, corrosion resistance provides nearly 10 times, meanwhile, round-trip fatigue life is promoted to from 300,000 times of common chrome-plated process
1000000 times.
Claims (10)
1. a kind of surface treatment method of damper front fork cylinder, which comprises the following steps:
(1) infiltration processing is carried out to damper front fork cylinder surface with carbon nitrogen lanthanum ruthenium ion penetration enhancer；
(2) step (1) treated damper front fork cylinder penetration enhancer is activated with lanthanum yttrium to activate；
(3) the damper front fork cylinder after step (2) activation is subjected to first time oxonium ion infiltration processing with oxonium ion penetration enhancer；
(4) will be polished after the cooling cleaning of step (3) treated damper front fork cylinder, with oxonium ion penetration enhancer carry out second of oxygen from
Sub- infiltration processing；
(5) step (4) treated damper front fork cylinder is subjected to Seal treatment and immersion oil with sealer；
The temperature that the oxonium ion penetrates into processing is 380~410 DEG C, and the time is 30~40min；
The material of the damper front fork cylinder is No. 20 steel.
2. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that the surface treatment side
Method further comprises being processed by shot blasting that treated, and surface is thick to the surface of the damper front fork cylinder before step (1)
Rugosity Ra≤0.2.
3. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that the surface treatment side
Method further comprises carrying out the pre-heat treatment to the damper front fork cylinder before step (2).
4. the surface treatment method of damper front fork cylinder according to claim 3, which is characterized in that the pre-heat treatment
Method are as follows: damper front fork cylinder is put into air heating tank, 280~300 DEG C is warming up to the speed of 5~10 DEG C/min, protects
20~25min of temperature.
5. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that step (1) described infiltration
The temperature for entering processing is 450~470 DEG C, and the infiltration time is 100~160min.
6. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that the carbon nitrogen lanthanum yttrium from
Sub- penetration enhancer includes the component of following parts by weight meter:
25~30 parts of KOCN,
NaHCO330~35 parts,
Sr(OH)25~10 parts,
5~15 parts of KCl,
5~10 parts of NaCl,
K2SO43~5 parts,
ErCl3·6H21~3 part of O,
Li2B4O75~10 parts,
Ce(NO3)3·6H21~3 part of O,
YbCl30.01~0.02 part,
YCl30.05~0.1 part,
La2(CO3)30.5~1.0 part.
7. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that step (2) described work
The temperature of change is 420~450 DEG C, and activation time is 50~70min.
8. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that the lanthanum yttrium activation is seeped
Agent includes the component of following parts by weight meter:
30~40 parts of KOCN,
NaHCO310~15 parts,
K25~15 parts of S,
14~25 parts of NaCl,
Na2SiO35~8 parts of 9H2O,
K2SO31~3 part,
Ce(NO3)3·6H2L~3 part O,
YbCl30.01~0.02 part,
Li2B4O75~10 parts,
3~5 parts of KCl,
0.3~1 part of YCl3,
La2(CO3)31~1.5 part.
9. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that the oxonium ion penetration enhancer
Component including following parts by weight meter:
25~35 parts of NaOH,
NaNO215~25 parts,
30~40 parts of KCl,
NH410~20 parts of Cl,
La2(CO3)30.5~1.0 part.
10. the surface treatment method of damper front fork cylinder according to claim 1, which is characterized in that step (5) described envelope
Close the component that agent includes following parts by weight meter:
35~40 parts of petroleum solvent (CAS.NO 64742-57-0),
40~50 parts of hydrogen weight base oil (CAS.NO:64742-52-5),
14~20 parts of sulfoacid calcium (CAS.NO 68603-42-9).
Priority Applications (1)
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| CN108559944A (en) * | 2018-01-15 | 2018-09-21 | 湖南红宇智能制造有限公司 | A kind of High-performance pin and its processing method |
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| WO2008088057A1 (en) * | 2007-01-15 | 2008-07-24 | Toshio Narita | Oxidation-resistant alloy coating film, method for production of oxidation-resistant alloy coating film, and heat-resistant metal member |
| CN103362454A (en) * | 2013-08-08 | 2013-10-23 | 成都伍田机械技术有限责任公司 | Method for preventing oil well pipe coupling from thread gluing and improving corrosion resistance of oil well pipe coupling |
| CN104674158A (en) * | 2015-01-28 | 2015-06-03 | 李德东 | Ternary co-permeation composite co-permeation treatment method for popo salt bath |
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Application publication date: 20190426 |