CN107746945A - A kind of process of surface treatment of high rigidity motorcycle camshaft - Google Patents
A kind of process of surface treatment of high rigidity motorcycle camshaft Download PDFInfo
- Publication number
- CN107746945A CN107746945A CN201710973097.8A CN201710973097A CN107746945A CN 107746945 A CN107746945 A CN 107746945A CN 201710973097 A CN201710973097 A CN 201710973097A CN 107746945 A CN107746945 A CN 107746945A
- Authority
- CN
- China
- Prior art keywords
- camshaft
- motorcycle
- technique
- high rigidity
- surface treatment
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The intensity of motorcycle camshaft, hardness, toughness and wearability are significantly strengthened the present invention relates to a kind of, there is the process of surface treatment of the high rigidity motorcycle camshaft of lifting to each side physical property, beneficial effect is：Radiation modification technology utilization irradiation light irradiation camshaft surface, moment produce 105‑106DEG C/s high firing rate, and exposure beam is moved past and produced with any one cooling technique in air cooling technique, air-cooled technique and the cold technique of nitrogen up at least 105DEG C/the s cooling velocity being exceedingly fast, improve the hardness and intensity of material surface；Under the quick heating condition of exposure beam, diffusion-homogenization process is difficult to or has little time to carry out, and dramatically improves the hardness and intensity of material surface；Intensity, hardness, toughness and the wearability of motorcycle camshaft is significantly strengthened, have lifting to each side physical property.
Description
Technical field
The present invention relates to a kind of process of surface treatment, more particularly to a kind of intensity, hardness, toughness to motorcycle camshaft
Significantly strengthened with wearability, there is the surface treatment of the high rigidity motorcycle camshaft of lifting to each side physical property
Technique.
Background technology
Motorcycle camshaft is the maximum friction parts of motorcycle；The speed of service is higher within the engine, contact stress is beaten,
Lubricating difficulties；The peach tip bit length phase of particularly camshaft is operated under high tired contact stress, be also easy to produce scratch, tear,
Cut and early stage wear out failure.Several hours when serious, or even very short time can just grind away, and cause engine abnormal noise, return
Repair.The work characteristics of camshaft determines that it must have certain strength and stiffness, certain toughness, good wearability.
And intensity, wearability, toughness and the hardness of camshaft prepared by prior art in itself are not very high, routine use
Problem, and some racing car motors or have the motorcycle of other demands, the performance of camshaft is particularly important, but from its
Angle prepared by forging itself has that cost is too high, production efficiency is low and removing one again to improve its above-mentioned physical properties
Beyond a little racing car motors and the problem of not all motorcycle is all especially harsh to the demand of camshaft, so from a subsequent treatment
Aspect can effectively solve this problem to carry out reinforcing to motorcycle camshaft.
Patent Office of the People's Republic of China authorized and discloses a kind of powder metallurgy combined sintering formula camshaft and its system on the 7th in September in 2016
The patent of invention of Preparation Method, invention patent mandate Publication No. CN103899372B, the patent of invention improves from material rubs
The manufacture of motorcycle camshaft, its hardness, wearability are improved, and there is low energy consumption, inexpensive, but its hardness is still not
Height, only up to more than 20HRC, its toughness, wearability etc. performance also have much room for improvement.
The content of the invention
For solve intensity, wearability, toughness and the hardness of camshaft prepared by above-mentioned prior art in itself be not it is very high,
Routine use is not problem, and some racing car motors or have the motorcycle of other demands, the performance of camshaft is particularly heavy
Will, but the angle prepared from itself forging has that cost is too high, low production efficiency again to improve its above-mentioned physical properties
It is lower and remove beyond some racing car motors and the problem of not all motorcycle is all especially harsh to the demand of camshaft, the present invention carries
Supplied it is a kind of the intensity of motorcycle camshaft, hardness, toughness and wearability are significantly strengthened, to each side physical property
There is the process of surface treatment of the motorcycle camshaft of lifting.
To achieve the above object, the present invention uses following technical scheme：
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment include polishing, overlay film,
Plating, brush antirust paint, grease and boil at least one of black handling process.
Preferably, radiation modification technique irradiation luminous power used is 500-10000W.
Preferably, the sweep speed of exposure light light beam is 10-50cms in the radiation modification technique-1。
Preferably, the radiation modification technique includes irradiation temperature rise period and defocus temperature-fall period.
Preferably, the defocus temperature-fall period uses any one in air cooling technique, air-cooled technique and the cold technique of nitrogen.
Preferably, irradiation band distribution pattern is vertical bar type, screw type, sinusoidal waveform, friendship in the radiation modification technique
Pitch any one in grid type, circular ring type.
Above-mentioned radiation modification technology utilization irradiation light irradiation camshaft surface, moment produce 105-106DEG C/s high plus
Thermal velocity, and exposure beam is moved past and produced with any one cooling technique in air cooling technique, air-cooled technique and the cold technique of nitrogen
Up at least 105DEG C/the s cooling velocity being exceedingly fast.Under conditions of the quick heating of irradiation, the degree of superheat is very big so that motorcycle
The phase driving force Δ G of camshaft casting becomes very big so that austenite and forming core number increase severely, at the same time after quick heating
Moment austenitizing, austenite crystal has little time to grow up, i.e., austenite crystal is extremely refined, subsequently to martensite transfor mation
During be necessarily changed into tiny martensitic structure；Under the quick heating condition of exposure beam, diffusion-homogenization process is difficult
Carried out with carrying out or having little time, cause carbon and the uneven increase of alloy concentrations in austenite, and then cause the horse in different microcells
It is different that family name's body phase becomes initial temperature, and with a collection of martensite can only it is close in martensitic traoformation initial temperature, concentration of carbon is similar
Formed in microcell, thus in follow-up quick cooling, martensite is refined, and is formed and is mixed by strip martensite and lamellar martensite
The cryptocrystalline martensite formed is closed, dramatically improves the hardness and intensity of material surface.
Exposure light forms the soft and hard alternation region in overlap and non-overlapping area, and irradiation hardening in multiple tracks scanning process
Band is parallel with the direction of rotation of axle, thus avoids the brittle flaking off of hardenability band, and hardenability band distributes alternately with non-hardenability band, non-hard
Change the effect for taking up oil storage anti-attrition, hardening takes up the effect of wear-resistant skeleton, improves the wearability of material surface, this soft or hard phase
Between overlap, soft portion toughness is preferable, can absorb compared with the mechanical energy caused by hard portion during micro-plastic deformation, alleviate to compared with
The percussion of huttriall position.
Irradiated light irradiation occurs the motorcycle camshaft casting volume after solid-state phase changes are strengthened and slightly expanded, and expansion occurs
In strengthening layer, expansion rate is about the 3-5% of strengthening layer thickness so that the motorcycle camshaft surface after the processing exists certain
Compression, compression further produces reinforcing to the physical property of motorcycle camshaft.
The beneficial effects of the invention are as follows：Radiation modification technology utilization irradiation light irradiation camshaft surface, moment produce 105-
106DEG C/s high firing rate, and exposure beam is moved past with any in air cooling technique, air-cooled technique and the cold technique of nitrogen
A kind of cooling technique is produced up at least 105DEG C/the s cooling velocity being exceedingly fast, improve the hardness and intensity of material surface；
Under the quick heating condition of exposure beam, diffusion-homogenization process is difficult to or has little time to carry out, and dramatically improves material
Expect the hardness and intensity on surface；Intensity, hardness, toughness and the wearability of motorcycle camshaft is set significantly to be strengthened, to each
Aspect physical property has lifting.
Embodiment
Embodiment 1
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process；
Radiation modification technique irradiation luminous power used is 500W, and the sweep speed of exposure light light beam is 10cms-1, defocus
Temperature-fall period uses air cooling technique, and irradiation band distribution pattern is vertical bar type.
Embodiment 2
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process；
Radiation modification technique irradiation luminous power used is 900W, and the sweep speed of exposure light light beam is 50cms-1, defocus
Temperature-fall period is used in air-cooled technique, and irradiation band distribution pattern is sinusoidal waveform.
Embodiment 3
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process；
Radiation modification technique irradiation luminous power used is 850W, and the sweep speed of exposure light light beam is 35cms-1, defocus
Temperature-fall period is used in the cold technique of nitrogen, and irradiation band distribution pattern is intersection grid type.
Embodiment 4
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process；
Radiation modification technique irradiation luminous power used is 1000W, and the sweep speed of exposure light light beam is 50cms-1, from
Burnt temperature-fall period is used in air cooling technique, and irradiation band distribution pattern is circular ring type.
Embodiment 5
A kind of process of surface treatment of high rigidity motorcycle camshaft, the process of surface treatment of the high rigidity motorcycle camshaft
Comprise the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process；
Radiation modification technique irradiation luminous power used is 650W, and the sweep speed of exposure light light beam is 15cms-1, defocus
Temperature-fall period is used in air cooling technique, and irradiation band distribution pattern is screw type.
Camshaft to more than after embodiment 1-5 surface treatments detects, and testing result is as follows：
1）Gained motorcycle camshaft is surface-treated to above-described embodiment 1-5 and carries out case hardness test, is surveyed using Rockwell hardness
Examination, more than HRC60 degree, the hardness compared to common motorcycle camshaft about HRC20 degree has greatly its hardness of acquired results
The lifting of degree；
2）Gained motorcycle camshaft is surface-treated to above-described embodiment 1-5 and carries out surface peening layer detection, surface peening thickness
Spend for 0.8-1mm, in outermost layer away from hardness highest in the range of the 0-0.2mm of surface, in the range of away from outermost surface 0.6-0.7mm
Hardness declines 8-10%, and strengthening layer integral hardness is high, and the uniformity is high.
3）Gained motorcycle camshaft is surface-treated to above-described embodiment 1-5 and carries out wearability test, by its gained motor
Car camshaft is placed on MRH-5A type abrasion testers, load 800N, rotating speed 200r/min, and dropwise addition 8-10 drops chemistry per minute is pure
Atoleine, testing time are 30 minutes, and test result shows its weightlessness in 0.3-0.5mg, wear scar width 1-1.1mm, phase
Compared with common motorcycle camshaft, its weightlessness is only 10% or so, has extremely strong wearability.
Claims (6)
1. a kind of process of surface treatment of high rigidity motorcycle camshaft, the surface treatment work of the high rigidity motorcycle camshaft
Skill comprises the following steps：
1）Roughing so that the cast obtained motorcycle camshaft cast(ing) surface that is molded obtains simple process, is follow-up table
Face processing is laid the groundwork；
2）Carburization Treatment, carbon source is provided when carrying out phase transformation through processing for follow-up motorcycle camshaft casting；
3）Solid-state phase changes are strengthened, by changing solid-phase component and tissue morphology, formed by changing its crystal grain, thickness and pattern come
The lifting of high degree is produced to the hardness of camshaft material and makes hardness and toughness that there is higher matching degree, and it is resistance to strengthen its
Mill property
4）Antirust treatment, improve the oxidation resistance of motorcycle camshaft；
Characterized in that, step 3）It is radiation modification technique that described solid-state phase changes, which are strengthened, step 4）Described antirust treatment bag
Include polishing, overlay film, plating, brush antirust paint, grease and boil at least one of black handling process.
2. the process of surface treatment of a kind of high rigidity motorcycle camshaft according to claim 1, it is characterised in that described
Radiation modification technique irradiation luminous power used is 500-10000W.
3. the process of surface treatment of a kind of high rigidity motorcycle camshaft according to claim 1, it is characterised in that described
The sweep speed of exposure light light beam is 10-50cms in radiation modification technique-1。
4. the process of surface treatment of a kind of high rigidity motorcycle camshaft according to claim 1, it is characterised in that described
Radiation modification technique includes irradiation temperature rise period and defocus temperature-fall period.
5. the process of surface treatment of a kind of high rigidity motorcycle camshaft according to claim 4, it is characterised in that described
Defocus temperature-fall period uses any one in air cooling technique, air-cooled technique and the cold technique of nitrogen.
6. the process of surface treatment of a kind of high rigidity motorcycle camshaft according to claim 1, it is characterised in that described
Irradiation is appointing in vertical bar type, screw type, sinusoidal waveform, intersection grid type, circular ring type with distribution pattern in radiation modification technique
Meaning is a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973097.8A CN107746945B (en) | 2017-10-18 | 2017-10-18 | A kind of process of surface treatment of high rigidity motorcycle camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973097.8A CN107746945B (en) | 2017-10-18 | 2017-10-18 | A kind of process of surface treatment of high rigidity motorcycle camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107746945A true CN107746945A (en) | 2018-03-02 |
| CN107746945B CN107746945B (en) | 2019-04-16 |
Family
ID=61253106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710973097.8A Active CN107746945B (en) | 2017-10-18 | 2017-10-18 | A kind of process of surface treatment of high rigidity motorcycle camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107746945B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104379882A (en) * | 2012-07-18 | 2015-02-25 | 马勒国际有限公司 | Camshaft |
| CN106282792A (en) * | 2016-08-24 | 2017-01-04 | 南通亨特电器有限公司 | A kind of processing method of elevator safety gear voussoir |
-
2017
- 2017-10-18 CN CN201710973097.8A patent/CN107746945B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104379882A (en) * | 2012-07-18 | 2015-02-25 | 马勒国际有限公司 | Camshaft |
| CN106282792A (en) * | 2016-08-24 | 2017-01-04 | 南通亨特电器有限公司 | A kind of processing method of elevator safety gear voussoir |
Non-Patent Citations (1)
| Title |
|---|
| 石岩等: "12CrNi3A 凸轮轴渗碳激光强化复合处理工艺", 《机械工艺师》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107746945B (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105385829B (en) | A kind of surface controllable composite strengthening method of forged steel crankshaft material | |
| CN104057002B (en) | A kind of compression spring processing process | |
| CN104024444B (en) | The manufacture method of steel | |
| CN111690794B (en) | Preparation method of engineering machinery final transmission gear | |
| CN110055394A (en) | A kind of heat treatment cooling technique of railway wheel | |
| CN103205551A (en) | Thermal treatment processing method of thrust wheel | |
| CN101092658A (en) | Method for prolonging service life of key parts and components of production equipment of chain cage machine - rotary kiln ball lumps | |
| CN110468259B (en) | Preparation method of wear-resistant hydraulic pump part | |
| CN110616401B (en) | Preparation method of wear-resistant hydraulic pump part | |
| CN102899469B (en) | Heat-treatment method of high-chromium wear-resistant white cast iron Cr28 | |
| JP3897434B2 (en) | Crawler belt bushing and manufacturing method thereof | |
| KR20180053150A (en) | Surface treatment method using local heating and ultrasonic nanocrystal surface modification | |
| WO2022166155A1 (en) | Container crane wheel steel, wheel and preparation method therefor | |
| CN107746945B (en) | A kind of process of surface treatment of high rigidity motorcycle camshaft | |
| JPH108136A (en) | Machine part and production thereof | |
| CN110629170A (en) | Method for improving wear resistance of high-pressure hydraulic pump part | |
| Yao et al. | Laser hardening techniques on steam turbine blade and application | |
| CN108504824A (en) | A kind of metal material toughening processing method | |
| JP2011144448A (en) | Method for producing rolling sliding member | |
| CN212504990U (en) | Processing device for realizing surface nanocrystallization of crankshaft device | |
| RU2597455C2 (en) | Method for treating component such as gearwheel | |
| CN102653851A (en) | Metal chain surface treatment method | |
| CN102199702A (en) | Composite strengthening heat treatment technology of internal combustion engine crankshaft | |
| CN106756759B (en) | Tough nitriding layer of a kind of ferrous alloy surface height and preparation method thereof | |
| RU2377318C2 (en) | Method of thermal treatment of machine building parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200120 Address after: Room 1,020, Nanxun Science and Technology Pioneering Park, No. 666 Chaoyang Road, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee after: Huzhou You Yan Intellectual Property Service Co., Ltd. Address before: 313200 Changhong East Street, Deqing County Economic Development Zone, Huzhou, Zhejiang Province, No. 269 Patentee before: Yuejin Holding Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220402 Address after: 438200 No. 51, Hongshan Avenue, Xishui Economic Development Zone, Huanggang City, Hubei Province Patentee after: HUBEI WEIFENG AUTO PARTS Co.,Ltd. Address before: 313000 room 1020, science and Technology Pioneer Park, 666 Chaoyang Road, Nanxun Town, Nanxun District, Huzhou, Zhejiang. Patentee before: Huzhou You Yan Intellectual Property Service Co.,Ltd. |