CN110181039A - Copper powder and its production method for oiliness bearing - Google Patents
Copper powder and its production method for oiliness bearing Download PDFInfo
- Publication number
- CN110181039A CN110181039A CN201910584799.6A CN201910584799A CN110181039A CN 110181039 A CN110181039 A CN 110181039A CN 201910584799 A CN201910584799 A CN 201910584799A CN 110181039 A CN110181039 A CN 110181039A
- Authority
- CN
- China
- Prior art keywords
- copper powder
- oiliness bearing
- purity
- broken
- temperature
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Powder Metallurgy (AREA)
- Sliding-Contact Bearings (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention belongs to change the physical structure technical field of copper with heat treating process or with hot-working or Cold-forming process, and in particular to a kind of copper powder for oiliness bearing.The porosity of the copper powder for oiliness bearing is 25%-30%, loose specific weight 2.2-2.4g/cm3.Copper powder porosity of the invention is high, and loose specific weight is small, can satisfy the use demand of high-end accurate oiliness bearing.
Description
Technical field
The invention belongs to change the physical structure technical field of copper, tool with heat treating process or with hot-working or Cold-forming process
Body is related to a kind of copper powder and its production method for oiliness bearing.
Background technique
There are many production method of copper powder, there is reduction method, atomization, mechanical milling method, electrolysis method etc..Different production methods
Obtained copper powder have different features (" the electrolytic preparation technical study of copper powder ", Zheng Jingwu etc., powder metallurgy industry, 2001
The 6th phase of volume 11, the left column paragraph 1 1-3 row of page 26).Electrolysis method is produced copper powder and is generally made using press polished stainless steel
For cathode, for electrolytic copper plate as anode, electrolyte is sulfate system solution, and direct current generates copper ion by electrolytic cell and sinks
Thus product makes the metal ion close to cathode plane be depleted and cause the diffusion, convection current, migration of ion on cathode, thus after
It is continuous that the metal ion obtained from anode is made to supply electrolytic cell (" the electrolytic preparation technical study of copper powder ", Zheng Jingwu etc., powder metallurgy
Industry, the 6th phase of volume 11 in 2001, the 2nd section of 1-6 row of the left column of page 27).Compared with other Cu-base powders, electrolytic copper powder has
Very high thermal conductivity and electric conductivity, and purity is high, large specific surface area, briquettability (compressibility and mouldability) good (" electrolytic copper powder roller
The research of formula continuous production processes ", Jin Rongtao, nonferrous smelting, the 5th phase in 1993, the left column paragraph 1 1-2 row of page 30；" copper
The electrolytic preparation technical study of powder ", Zheng Jingwu etc., powder metallurgy industry, the 6th phase of volume 11 in 2001, the left column paragraph 1 of page 26
3-6 row).
Oiliness bearing, that is, porous bearings is widely used in Transport Machinery, household electrical appliance, stereo set, food machinery, print
Brush the industrial circles such as machinery, automobile, instrument and meter, textile machine, aerospace.With machinery, the industries such as electronics are towards miniature
Change, the development of high-precision densification, intelligent direction, the prosperity of the industries such as computer, information household appliances, precision instrument, to oiliness bearing
Demand is also increasingly wider.The matrix of Porous Bearing is processed to porous institutional framework, has certain permeability,
It is impregnated after being made with lubricant appropriate (generally with lubricating oil), is filled to lubricant in the hole of matrix and stores
Come.It has the advantages that self is lubricated, and shows as oil and oozes out from hole and be lubricated in operation in rubbing surface, operation one stops
Only, oil is just inhaled into porous matrix again and stores, therefore the number of dropouts of lubricating oil is generally seldom, can be run with a small amount of oil
It must lubricate for a long time.Relative to rolling bearing, Porous Bearing is with noise is low, size is small, structure is simple, production work
The features such as skill is superior, it is deadlocked, cheap to generate heat, and is suitble to mass production (" research of oiliness bearing greasy property ", week
Peak, Zhejiang University's master thesis, 2005, the paragraph 1 1-4 row of page 1 and the 2nd section of 1-6 row, publication date 2006 years 04
The moon 25).
For electrolytic copper powder as one of oiliness bearing powder main material, performance determines oiliness bearing to a certain extent
Service performance.However, existing copper powder is not well positioned to meet the use demand of high-end accurate oiliness bearing.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of copper powder for oiliness bearing, which can satisfy height
Hold the use demand of accurate oiliness bearing.
To achieve the above object, the technical solution of the present invention is as follows:
For the copper powder of oiliness bearing, the porosity of the copper powder is 25%-30%, loose specific weight 2.2-2.4g/
cm3。
The porosity refers to the percentage of copper powder mesopore volume and copper powder total volume in its natural state.
The loose specific weight refers to that copper powder is freely full of the quality of the unit volume measured after volumetric standard.
Further, purity >=99.9% of the copper powder.
The purity refers to the mass content of copper in copper powder.
The present invention also aims to protect the preparation method of the copper powder for oiliness bearing, successively by electrolytic copper powder
Oxidizing roasting, broken, screening, reduction drying and broken selection by winnowing, the temperature of the oxidizing roasting are 300-400 DEG C, time 60-
90min。
Further, the purity > 99.7% of the electrolytic copper powder, the mass content of Pb is less than 0.05%.
Further, described be crushed refers to that being crushed to -100 mesh of granularity accounts for 90% or more.
Further, the temperature of the reduction drying is 400-600 DEG C, time 120-180min.
Further, the preparation method of the copper powder, specifically: successively by purity > 99.7%, the mass content of Pb is less than
0.05% electrolytic copper powder oxidizing roasting, broken, screening, reduction drying and broken selection by winnowing, the temperature of the oxidizing roasting are
300-400 DEG C, time 60-90min；It is described to refer to that being crushed to -100 mesh of granularity accounts for 90% or more；The temperature of the reduction drying
Degree is 400-600 DEG C, time 120-180min.
The beneficial effects of the present invention are:
Copper powder porosity of the invention is high, up to 25%-30%.
Copper powder loose specific weight of the invention, up to 2.3-2.4g/cm3。
Copper powder purity is high of the invention, up to 99.9% or more.
Copper powder porosity of the invention is high, loose specific weight, can preferably meet the use need of high-end accurate oiliness bearing
It asks.
Specific embodiment
Illustrated embodiment is to preferably be illustrated to the contents of the present invention, but is not that the contents of the present invention only limit
In illustrated embodiment.So those skilled in the art carry out nonessential change to embodiment according to foregoing invention content
Into and adjustment, still fall within protection scope of the present invention.
The detection method of following purity is electrolysis gravimetric method, specifically according to " GB/T5121.1-2008 copper and copper alloy chemistry
Analysis method " in the measuring method of first part's copper content be measured；
The mass content of following Pb is according to Part III in " GB/T5121.1-2008 copper and copper alloy chemical analysis method "
The measuring method of lead content is measured；
Following porosity is according to " GB/T21650 mercury injection method and gas determination of adsorption method solid material gas cell distribution and hole
Degree " in full-automatic static volumetric method specific surface area, be measured using lacunarity analysis instrument；
Following loose specific weight is according to " the measurement part 1 funnel method of GB/T 1479.1-2011 metal powder apparent density "
It is measured；
Following granularity is using laser particle size analyzer according to " GB/T1480-2012 metal powder dry screen distribution measurement granularity "
It is detected.
Embodiment 1
The preparation method of copper powder for oiliness bearing, specifically follows the steps below:
A. by purity > 99.7%, electrolytic copper powder of the mass content less than 0.05% of Pb is placed in rotary furnace in 300-
Oxidizing roasting 60-90min at a temperature of 350 DEG C；
B. it is crushed: the copper powder after oxidizing roasting being crushed to -100 mesh of granularity with crusher and accounts for 90% or more；
C. it sieves: the copper powder through break process being used into eccentric vibrating screen, is tentatively sieved using 80 mesh screens；
D. screened obtained copper powder steel belt type reducing furnace reduction drying: is restored into drying at a temperature of 500-600 DEG C
120-150min；
E. it is crushed selection by winnowing: the copper powder obtained through reduction drying being carried out broken selection by winnowing to obtain purity being 99.9%, granularity D97
For 148um, porosity 26.5%, loose specific weight 2.38g/cm3Copper powder.
Embodiment 2
The preparation method of copper powder for oiliness bearing, specifically follows the steps below:
A. by purity > 99.7%, electrolytic copper powder of the mass content less than 0.05% of Pb is placed in rotary furnace in 350-
Oxidizing roasting 60-90min at a temperature of 400 DEG C；
B. it is crushed: the copper powder after oxidizing roasting being crushed to -100 mesh of granularity with crusher and accounts for 90% or more；
C. it sieves: the copper powder through break process being used into eccentric vibrating screen, is tentatively sieved using 80 mesh screens；
D. screened obtained copper powder steel belt type reducing furnace reduction drying: is restored into drying at a temperature of 500-600 DEG C
120-180min；
E. it is crushed selection by winnowing: the copper powder obtained through reduction drying being carried out broken selection by winnowing to obtain purity being 99.9%, granularity D97
For 145um, porosity 28.5%, loose specific weight 2.34g/cm3Copper powder.
Embodiment 3
The preparation method of copper powder for oiliness bearing, specifically follows the steps below:
A. by purity > 99.7%, electrolytic copper powder of the mass content less than 0.05% of Pb is placed in rotary furnace in 300-
Oxidizing roasting 60-90min at a temperature of 400 DEG C；
B. it is crushed: the copper powder after oxidizing roasting being crushed to -100 mesh of granularity with crusher and accounts for 90% or more；
C. it sieves: the copper powder through break process being used into eccentric vibrating screen, is tentatively sieved using 80 mesh screens；
D. screened obtained copper powder steel belt type reducing furnace reduction drying: is restored into drying at a temperature of 400-500 DEG C
160-180min；
E. it is crushed selection by winnowing: the copper powder obtained through reduction drying being carried out broken selection by winnowing to obtain purity being 99.9%, granularity D97
For 137um, porosity 29.6%, loose specific weight 2.23g/cm3Copper powder.
By embodiment 1-3 it is found that the purity for the copper powder that embodiment 1-3 is obtained is 99.9%, granularity D97 is 130-150um,
Porosity is 25-30%, loose specific weight 2.2-2.4g/cm3.Thus it proves, copper powder porosity of the invention is high, loose specific weight
It is small, the use demand of high-end accurate oiliness bearing can be better met.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. being used for the copper powder of oiliness bearing, which is characterized in that the porosity of the copper powder is 25%-30%, and loose specific weight is
2.2-2.4g/cm3。
2. copper powder according to claim 1, which is characterized in that purity >=99.9% of the copper powder.
3. the preparation method of copper powder as claimed in claim 1 or 2, which is characterized in that successively by electrolytic copper powder oxidizing roasting, it is broken,
Screening, reduction drying and broken selection by winnowing, the temperature of the oxidizing roasting are 300-400 DEG C, time 60-90min.
4. preparation method according to claim 3, which is characterized in that the purity > 99.7% of the electrolytic copper powder, Pb's
Mass content is less than 0.05%.
5. preparation method according to claim 3 or 4, which is characterized in that it is described it is broken refer to be crushed to -100 mesh of granularity
Account for 90% or more.
6. according to the described in any item preparation methods of claim 3-5, which is characterized in that the temperature of the reduction drying is 400-
600 DEG C, time 120-180min.
7. according to the described in any item preparation methods of claim 3-6, which is characterized in that successively by purity > 99.7%, Pb's
Electrolytic copper powder oxidizing roasting of the mass content less than 0.05%, broken, screening, reduction drying and broken selection by winnowing, the oxidation roasting
The temperature of burning is 300-400 DEG C, time 60-90min；It is described to refer to that being crushed to -100 mesh of granularity accounts for 90% or more；It is described to go back
The temperature of original drying is 400-600 DEG C, time 120-180min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584799.6A CN110181039B (en) | 2019-07-01 | 2019-07-01 | Copper powder for oil-impregnated bearing and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584799.6A CN110181039B (en) | 2019-07-01 | 2019-07-01 | Copper powder for oil-impregnated bearing and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110181039A true CN110181039A (en) | 2019-08-30 |
| CN110181039B CN110181039B (en) | 2023-07-14 |
Family
ID=67724373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910584799.6A Active CN110181039B (en) | 2019-07-01 | 2019-07-01 | Copper powder for oil-impregnated bearing and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110181039B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324703A (en) * | 2000-05-19 | 2001-12-05 | 湖南正虹饲料股份有限公司 | Making process of high-strength redox copper powder |
| CN101704103A (en) * | 2009-12-22 | 2010-05-12 | 元磁新型材料(苏州)有限公司 | Compound copper powder for manufacturing capillary structure of inner wall of heat pipe |
| CN101837460A (en) * | 2010-04-26 | 2010-09-22 | 吴棕洋 | Method for preparing low-apparent-density copper powder through water atomization |
| CN101880790A (en) * | 2009-05-06 | 2010-11-10 | 上海乔敦金属有限公司 | Copper-tin localized alloying powder for oil-retaining bearing and preparation method thereof |
| JP2011214032A (en) * | 2010-03-31 | 2011-10-27 | Jx Nippon Mining & Metals Corp | Copper powder for brake pad |
| CN102476184A (en) * | 2010-11-19 | 2012-05-30 | 元磁新型材料(苏州)有限公司 | Copper powder as well as manufacture method, manufacture device and heat radiation element thereof |
| CN103771483A (en) * | 2013-12-27 | 2014-05-07 | 重庆华浩冶炼有限公司 | Method for producing copper oxide powder from electrolytic copper powder washing wastewater |
-
2019
- 2019-07-01 CN CN201910584799.6A patent/CN110181039B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324703A (en) * | 2000-05-19 | 2001-12-05 | 湖南正虹饲料股份有限公司 | Making process of high-strength redox copper powder |
| CN101880790A (en) * | 2009-05-06 | 2010-11-10 | 上海乔敦金属有限公司 | Copper-tin localized alloying powder for oil-retaining bearing and preparation method thereof |
| CN101704103A (en) * | 2009-12-22 | 2010-05-12 | 元磁新型材料(苏州)有限公司 | Compound copper powder for manufacturing capillary structure of inner wall of heat pipe |
| JP2011214032A (en) * | 2010-03-31 | 2011-10-27 | Jx Nippon Mining & Metals Corp | Copper powder for brake pad |
| CN101837460A (en) * | 2010-04-26 | 2010-09-22 | 吴棕洋 | Method for preparing low-apparent-density copper powder through water atomization |
| CN102476184A (en) * | 2010-11-19 | 2012-05-30 | 元磁新型材料(苏州)有限公司 | Copper powder as well as manufacture method, manufacture device and heat radiation element thereof |
| CN103771483A (en) * | 2013-12-27 | 2014-05-07 | 重庆华浩冶炼有限公司 | Method for producing copper oxide powder from electrolytic copper powder washing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110181039B (en) | 2023-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Sn alloying to inhibit hydrogen evolution of Zn metal anode in rechargeable aqueous batteries | |
| da Silva Neto et al. | Intervening variables in electrochemical machining | |
| Wang et al. | Process optimization for vacuum distillation of Sn–Sb alloy by response surface methodology | |
| CN104096931A (en) | Method for electrochemically machining micro-pit array | |
| Cao et al. | Electrochemical oxidation of Fe–Ni alloys in cryolite–alumina molten salts at high temperature | |
| Wang et al. | Structurally durable bimetallic alloy anodes enabled by compositional gradients | |
| Lin et al. | Nucleation mechanism of silver during electrodeposition on a glassy carbon electrode from a cyanide-free bath with 2-hydroxypyridine as a complexing agent | |
| Zhu et al. | Facile preparation of CuO@ SnO2 nanobelts as a high-capacity and long-life anode for lithium-ion batteries | |
| CN104498684A (en) | Decarburization method for hard alloy in vacuum sintering furnace | |
| CN110181039A (en) | Copper powder and its production method for oiliness bearing | |
| Wang et al. | Evaluation of cooling rate on electrochemical behavior of Sn–0.3 Ag–0.9 Zn solder alloy in 3.5 wt% NaCl solution | |
| Roy et al. | For Zinc Metal Batteries, How Many Electrons go to Hydrogen Evolution? An Electrochemical Mass Spectrometry Study | |
| Cheng et al. | Reaction mechanism of Ni-coated Cu composite powder prepared by liquid-solid fluidized bed 3D electrodes | |
| Panek et al. | Ni50Mo40Ti10 alloy prepared by mechanical alloying as electroactive material for hydrogen evolution reaction | |
| Zhao et al. | Electrocatalytic evolution of hydrogen on the NiCu/Al 2 O 3/nano-carbon network composite electrode | |
| Pak et al. | Obtaining titanium carbide in an atmospheric electric discharge plasma | |
| Zhang et al. | Nanocrystalline intermetallic tungsten carbide: nanoscaled solidoid synthesis, nonfaradaic pseudocapacitive property, and electrode material application | |
| CN104475722A (en) | Low-lead, low-apparent-density high-branch-shaped electrolytic copper powder and preparation method thereof | |
| Xu et al. | Raman spectroscopic and quantum chemical study of hydrogen adsorption at platinum electrodes | |
| Yang et al. | Preparation of Nitrogen‐doped Silver Phosphate and Its Performance of Supercapacitors | |
| Zhang et al. | The electrochemical dissolution mechanism and treatment process in the molten-salt electrolytic recovery of WC-Co two-phase scraps | |
| Ibrahim | Prediction of Surface Roughness and Material Removal Rate in Electrochemical Machining Using Taguchi Method | |
| Zhao et al. | Electrocatalytic activity of the conductive alumina/ncn composite electrode by electro‐depositing nicu particles for methanol oxidation | |
| CN208391008U (en) | By the bearing material with ultralow porosity for being loosely sintered acquisition | |
| Padhee et al. | Electro-deoxidation process for producing FeTi from low-grade ilmenite: tailoring precursor composition for hydrogen storage |
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 |