CN107937913A - A kind of production technology of pallet - Google Patents
A kind of production technology of pallet Download PDFInfo
- Publication number
- CN107937913A CN107937913A CN201711191053.6A CN201711191053A CN107937913A CN 107937913 A CN107937913 A CN 107937913A CN 201711191053 A CN201711191053 A CN 201711191053A CN 107937913 A CN107937913 A CN 107937913A
- Authority
- CN
- China
- Prior art keywords
- pallet
- blank
- treatment
- production technology
- polishing
- 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.)
- Pending
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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- 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
- C23C8/36—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 using ionised gases, e.g. ionitriding
- C23C8/38—Treatment of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a kind of production technology of pallet, mainly includes the following steps that to realize, a:Pallet blank heat treatment, b are carried out first:Pallet blank after heat treatment carries out machining, c:The pallet blank after machining is polished polishing, d again:After the completion for the treatment of step c, then pallet is heat-treated, f:After the completion for the treatment of step d, then pallet is subjected to ion Plasma Nitriding Treatment, g:After the completion for the treatment of step f, then pallet is subjected to plating metal and is handled.For the technology with advanced, the comparison that operates is easy, not only greatly improves the hardness, wearability and corrosion resistance of tray surface, but also extends the working life of pallet, ensure that the working performance of pallet, reduces the cost of production and processing.
Description
Technical field
The present invention relates to a kind of pallet coarse working techniques field, is specially a kind of production technology of pallet.
Background technology
At present, the surface of pallet is caused to be subject to seriously in use, often because the effect of oxidation or corrosion in pallet
Infringement, so as to reduce the service life of pallet.
To improve the wearability and resistance to corrosion of tray surface, pallet processing factory is employed at many surface peenings
The method of reason improves the metallicity of surface peening machine, but there is poor Coating combination for these surface strengthening treatment technologies
Power and by the various defects such as equilbrium solubility is small, solid-state diffusion difference is limited, thus to improving hardness, the wearability of pallet
It is unsatisfactory with corrosion proof effect, and the cost of production and processing cannot be significantly reduced.
The content of the invention
The defects of the technical problem to be solved in the present invention is the prior art is overcome, there is provided a kind of production technology of pallet, should
For technology with advanced, the comparison that operates is easy, not only greatly improves the hardness of tray surface, wearability and anti-corrosion
Property, and the working life of pallet is extended, it ensure that the working performance of pallet, reduce the cost of production and processing.
To solve the above problems, the present invention provides following technical solution:A kind of production technology of pallet, mainly including following
Step realizes, a:Pallet blank heat treatment, b are carried out first:Pallet blank after heat treatment carries out machining, c:It will cut again
Cut the pallet blank after processing and be polished polishing, d:After the completion for the treatment of step c, then pallet is heat-treated, f:Treat that step d is complete
Cheng Hou, then pallet is subjected to ion Plasma Nitriding Treatment, g:After the completion for the treatment of step f, then pallet is subjected to plating metal and is handled.
As a kind of preferred embodiment of the present invention, pallet blank is heat-treated in the step a, is quenched first,
The quenching is by the superficial layer through hardening of pallet blank to certain depth, by quickly heating when pallet blank quenches, makes support
The temperature of quenching is arrived on disk blank surface quickly, has little time just to cool down immediately through workpiece center portion in heat, realizes selective hardening, holds in the palm
The quick heating means that the quenching of disk blank uses have a variety of, such as electric induction, flame, electrical contact and laser, then by repeatedly high
Temperature tempering, high tempering refer to be tempered between 500-650 DEG C.
As a kind of preferred embodiment of the present invention, the rotating speed of the motor of machining is 2100- in the step b
2900r/min, cutting time 20min, temperature during cutting is 45-65 DEG C, and machining is divided into roughing, semifinishing
And finishing step, roughing are with big cutting depth, through once or a small number of feeds several times, big portion being cut from pallet blank
Divide or whole allowance, semifinishing are the intermediate step between roughing and finishing;Finishing is with finely cutting
Mode, such as smart car, adjustable cast iron planes and finish ream.
As a kind of preferred embodiment of the present invention, be divided into when pallet is polished polishing in the step c just throwing, in
Throw and three steps of smart throwing, described just throw polish one to three times using coarse emery wheel in pallet, shape is thick during the middle throwing uses
Rough emery wheel polish pallet, is finally finely polished on the basis of original middle throwing using fine emery wheel, described
The rotating speed of polishing grinding motor is 1500-2200r/min, and the time of polishing grinding is 30min, and the thickness of polishing grinding is
0.3—0.5mm。
As a kind of preferred embodiment of the present invention, the step f intermediate ion nitrogen treatment operating temperature for 300~
550 DEG C, the ionic nitriding time is 8h, operating current 30A, operating voltage 450V, and stream of nitrogen gas amount is 2L/min, and air pressure is
500~700Pa, connects anode, workpiece connects cathode, and two interpolars pass to the DC voltage of hundreds of volts, at this time in stove by furnace body
N2 gases radiance then occur be discharged into cation, moved to working surface, drastically decline in moment cathode voltage, make cation
To rush at cathode surface at a high speed, kinetic energy is changed into gas energy so that workpiece surface temperature is risen, after the impact of Nitrogen ion
Workpiece surface is got into the elements such as Fe, C, O sputter and with Nitrogen ion be combined into FeN, thus nitrided iron is gradually attracted to work
Nitridation is produced on part.
As a kind of preferred embodiment of the present invention, the component of plating metal processing and proportioning are in the step g:Titanium palladium
45~50wt%, zinc 20~35,40~60wt% of nickel, 35~40wt% of 10~25wt% of chromium and iron, the plating metal processing
Using electric plating method, electro-plating method needs to pre-process, and pretreatment is substantially carried out degreasing, goes the work such as corrosion, dust;Deoil
Fat, can use solvent dissolving and chemistry, realize the methods of electrochemistry;Derusting, can use machinery, pickling and electrochemistry side
Method derusts;Activation process, generally in weak acid corrode certain time carry out plating front activating processing.
Compared with prior art, beneficial effects of the present invention are as follows:
A kind of production technology of pallet of the present invention, for the technology with advanced, the comparison that operates is easy, not only greatly carries
The high hardness of tray surface, wearability and corrosion resistance, and the working life of pallet is extended, it ensure that the workability of pallet
Energy, reduces the cost of production and processing.
Embodiment
The present invention provides a kind of technical solution:A kind of production technology of pallet, mainly includes the following steps that to realize, a:It is first
First carry out pallet blank heat treatment, b:Pallet blank after heat treatment carries out machining, c:Again by the pallet after machining
Blank is polished polishing, d:After the completion for the treatment of step c, then pallet is heat-treated, f:After the completion for the treatment of step d, then by pallet
Carry out ion Plasma Nitriding Treatment, g:After the completion for the treatment of step f, then pallet is subjected to plating metal and is handled.
Pallet blank is heat-treated in the step a, is quenched first, the quenching is that the superficial layer of pallet blank is quenched
Certain depth is arrived thoroughly, by quickly heating when pallet blank quenches, pallet blank surface is arrived the temperature of quenching quickly, in heat
Amount has little time just to cool down immediately through workpiece center portion, realizes selective hardening, and the quick heating means that the quenching of pallet blank uses have
A variety of, such as electric induction, flame, electrical contact and laser, then be tempered by multiple high temp, high tempering refers at 500-650 DEG C
Between be tempered, its role is to be overcooling austenite is carried out martensite or bainite transformation by the purpose of quenching, obtain
To martensite or bainite structure, then coordinate the tempering with different temperatures, with greatly improve the intensity of pallet blank, hardness,
Wearability, fatigue strength and toughness etc., then the purpose for passing through high tempering are that pallet blank is reduced or eliminated to produce in quenching
Raw internal stress, reduces the brittleness of quenching pallet blank, pallet blank is obtained preferable intensity, toughness, plasticity and elasticity etc.
Comprehensive mechanical property.
The rotating speed of the motor of machining is 2100-2900r/min, cutting time 20min in the step b, is cut
When temperature be 45-65 DEG C, machining is divided into roughing, semifinishing and finishing step;Roughing is with big cutting
Depth, through once or a small number of feed several times, the processing method that largely or entirely allowance is cut from pallet blank, it is thick plus
Work is efficient, is typically used as being pre-machined;Intermediate step of the semifinishing between roughing and finishing;Finishing is with essence
The mode of upper cut, makes finished surface reach higher precision and surface quality, such as smart car, adjustable cast iron planes and finish reams, and effectively will
The part that pallet has more enhances the integrity degree of pallet to cutting off.
It is divided into just throwing, middle throwing and essence when pallet is polished polishing in the step c and throws three steps, described just throw uses
In pallet polishing one to three times, the coarse emery wheel of shape polish pallet coarse emery wheel during the middle throwing uses, and finally makes
Finely polished on the basis of original middle throwing with fine emery wheel, the rotating speed of the polishing grinding motor for 1500-
2200r/min, the time of polishing grinding is 30min, and the thickness of polishing grinding is 0.3-0.5mm, and its role is to effectively will
Pallet rough surface improves the aesthetics of pallet to polishing grinding.
The step f intermediate ion nitrogen treatment operating temperature is 300~550 DEG C, and the ionic nitriding time is 8h, work electricity
It is 2L/min to flow for 30A, operating voltage 450V, stream of nitrogen gas amount, and air pressure is 500~700Pa, is that pallet is positioned over nitrogen
Change in stove, will be evacuated in advance in stove up to 10-2~10-3Torr(㎜Hg)N2 gases or the gaseous mixture of N2+H2 are imported afterwards
Body, adjustment stove is interior up to 1~10Torr, furnace body is connected anode, workpiece connects cathode, and two interpolars pass to the direct current of hundreds of volts
Pressure, at this time the N2 gases in stove radiance then occur be discharged into cation, moved to working surface, moment cathode voltage drastically under
Drop, makes cation to rush at cathode surface at a high speed, kinetic energy is changed into gas energy so that workpiece surface temperature is risen, because of nitrogen
Workpiece surface got into the elements such as Fe, C, O after the impact of ion sputter and with Nitrogen ion be combined into FeN, thus nitrided iron by
Gradually it is attracted on workpiece and produces nitridation, its role is to what is formed after ionic nitriding intensive treatment in pallet matrix surface
Solid solution crystals structure is close hexagoinal lattice, and brittleness is big, corrosion resistance is good, intensity is high, greatly improve matrix surface hardness and
Wearability.
The component of plating metal processing and proportioning are in the step g:45~50wt% of titanium palladium, zinc 20~35, nickel 40~
35~40wt% of 60wt%, 10~25wt% of chromium and iron, the plating metal processing use electric plating method, and electro-plating method needs pre-
Processing, pretreatment are substantially carried out degreasing, go the work such as corrosion, dust;Degreasing, can use solvent dissolving and chemistry, electricity
The methods of chemical, is realized;Derusting, can use machinery, pickling and electrochemical method derusting;Activation process, generally in weak acid
Erosion certain time carries out plating front activating processing, and the surface its role is to pallet selects the alloy powder based on Ni-based to carry out
Plasma cladding is handled, and Ni-based play in alloy powder strengthens matrix, inoxidizability, the corrosion resistance of raising clad layer surface
With the effect of wearability and increase alloy rigidity and intensity, and there is good cost performance.
The method of the present invention is compared with conventional method:Pallet enhances pallet by improving the change hard formation on surface after reinforcing
Surface impact resistant and friction, capability, can reduce the vibration values of pallet, improve the wearability of pallet, and extend pallet uses the longevity
Life, also correspondingly improves the service life of pallet, has good social benefit.
Claims (6)
- A kind of 1. production technology of pallet, it is characterised in that:Mainly include the following steps that to realize, a:Pallet blank is carried out first Heat treatment, b:Pallet blank after heat treatment carries out machining, c:The pallet after machining is polished polishing, d again: After the completion for the treatment of step c, then pallet is heat-treated, f:After the completion for the treatment of step d, then pallet is subjected to ion Plasma Nitriding Treatment, g: After the completion for the treatment of step f, then pallet is subjected to plating metal and is handled.
- A kind of 2. production technology of pallet according to claim 1, it is characterised in that:Pallet blank heat in the step a Processing, is quenched first, and the quenching is by the superficial layer through hardening of pallet blank to certain depth, during the quenching of pallet blank By quickly heating, pallet blank surface is arrived the temperature of quenching quickly, have little time in heat just cold immediately through workpiece center portion But, realize selective hardening, the quick heating means that the quenching of pallet blank uses have it is a variety of, such as electric induction, flame, electrical contact and sharp Light etc., then be tempered by multiple high temp, high tempering refers to be tempered between 500-650 DEG C.
- A kind of 3. production technology of pallet according to claim 1, it is characterised in that:Machining in the step b The rotating speed of motor is 2100-2900r/min, cutting time 20min, and temperature during cutting is 45-65 DEG C, machining point For roughing, semifinishing and finishing step, roughing be with big cutting depth, through once or a small number of feeds several times, from Largely or entirely allowance, intermediate step of the semifinishing between roughing and finishing are cut on pallet blank;Essence Processing is with the mode finely cut, and such as smart car, adjustable cast iron planes and is finish reamed.
- A kind of 4. production technology of pallet according to claim 1, it is characterised in that:Pallet is thrown in the step c Light is divided into just throwing, middle throwing and essence and throws three steps when polishing, described just to throw using coarse emery wheel in pallet polishing one to three times, The coarse emery wheel of shape polish pallet during the middle throwing uses, finally using fine emery wheel on the basis of original middle throwing Finely polished, the rotating speed of the polishing grinding motor is 1500-2200r/min, and the time of polishing grinding is 30min, is thrown The thickness of light polishing is 0.3-0.5mm.
- A kind of 5. production technology of pallet according to claim 1, it is characterised in that:At the step f intermediate ion nitridations It is 300~550 DEG C to manage operating temperature, and the ionic nitriding time is 8h, operating current 30A, operating voltage 450V, nitrogen gas Flow is 2L/min, and air pressure is 500~700Pa, furnace body is connected anode, workpiece connects cathode, and two interpolars pass to hundreds of volts DC voltage, at this time the N2 gases in stove radiance then occur be discharged into cation, moved to working surface, in moment cathode electricity Pressure drastically declines, and makes cation to rush at cathode surface at a high speed, kinetic energy is changed into gas energy so that workpiece surface temperature obtains the above Rise, sputter because workpiece surface is got the elements such as Fe, C, O after the impact of Nitrogen ion and with Nitrogen ion be combined into FeN, thus nitrogen Change iron to be gradually attracted on workpiece and produce nitridation.
- A kind of 6. production technology of pallet according to claim 1, it is characterised in that:Metal processing is plated in the step g Component and proportioning be:45~50wt% of titanium palladium, zinc 20~35,40~60wt% of nickel, 10~25wt% of chromium and iron 35~ 40wt%, the plating metal processing use electric plating method, and electro-plating method needs to pre-process, and pretreatment is substantially carried out degreasing, derusts The work such as erosion, dust;Degreasing, can use solvent dissolving and chemistry, realize the methods of electrochemistry;Derusting, can use machine Tool, pickling and electrochemical method derusting;Activation process, generally in weak acid corrode certain time carry out plating front activating processing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711191053.6A CN107937913A (en) | 2017-11-24 | 2017-11-24 | A kind of production technology of pallet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711191053.6A CN107937913A (en) | 2017-11-24 | 2017-11-24 | A kind of production technology of pallet |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107937913A true CN107937913A (en) | 2018-04-20 |
Family
ID=61949708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711191053.6A Pending CN107937913A (en) | 2017-11-24 | 2017-11-24 | A kind of production technology of pallet |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107937913A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112975305A (en) * | 2021-04-13 | 2021-06-18 | 张家港市品杰模塑科技有限公司 | Processing technology of plate A and plate B in die-casting die frame |
-
2017
- 2017-11-24 CN CN201711191053.6A patent/CN107937913A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112975305A (en) * | 2021-04-13 | 2021-06-18 | 张家港市品杰模塑科技有限公司 | Processing technology of plate A and plate B in die-casting die frame |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104791041B (en) | A kind of cylinder cover of automobile engine | |
WO2011013362A1 (en) | Steel member having nitrogen compound layer and process for producing same | |
CN111485070B (en) | Preparation process of antifriction and wear-resistant gear part | |
CN111690794B (en) | Preparation method of engineering machinery final transmission gear | |
CN104895695B (en) | A kind of diesel engine cylinder head | |
CN100591944C (en) | Production technology of damper piston rod of automobile | |
CN104962827A (en) | Annular joint and processing method | |
CN102787288A (en) | Hot spraying process of metal ceramic coating on surface of valve rod | |
CN108315687A (en) | Laser melting coating stainless steel coating composite nitride technique | |
CN110468259B (en) | Preparation method of wear-resistant hydraulic pump part | |
CN110616401B (en) | Preparation method of wear-resistant hydraulic pump part | |
CN105525230A (en) | Method for manufacturing cutting tools from high-speed W18Cr4Nb material | |
CN108747240A (en) | A kind of car Gearmaking Technology | |
CN107937913A (en) | A kind of production technology of pallet | |
CN110629170B (en) | Method for improving wear resistance of high-pressure hydraulic pump part | |
CN105369259A (en) | Machining method for nut plate | |
CN110484696B (en) | Preparation method of antifriction and wear-resistant hydraulic pump part | |
CN104368817B (en) | A kind of process of surface treatment of copper-base powder metallurgy part | |
CN111254393B (en) | Preparation method of wear-resistant bulldozer transmission shaft part | |
CN114231890A (en) | QPQ production process of iron shaft of golf club | |
US20160024622A1 (en) | Process for producing a component made of heat-treated cast iron | |
CN110408882B (en) | Anti-carburizing treatment method | |
CN111593295B (en) | Surface treatment method for working cylinder of shock absorber | |
CN114182197A (en) | Method for manufacturing cutting tool and cutting tool | |
JPH01159358A (en) | Surface treatment of titanium member |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180420 |
|
WD01 | Invention patent application deemed withdrawn after publication |