CN105436496A - Steel-backing non-electroplating copper alloy based friction material and preparation method and application for friction piece - Google Patents
Steel-backing non-electroplating copper alloy based friction material and preparation method and application for friction piece Download PDFInfo
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- CN105436496A CN105436496A CN201410558033.8A CN201410558033A CN105436496A CN 105436496 A CN105436496 A CN 105436496A CN 201410558033 A CN201410558033 A CN 201410558033A CN 105436496 A CN105436496 A CN 105436496A
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Abstract
The invention provides a steel-backing non-electroplating copper alloy based friction material and a preparation method and application for a friction piece. The copper alloy based friction material is composed of, by weight, 50%-84% of copper powder, 3%-15% of metallic bond, 5%-20% of friction modifier and 5%-15% of abrasion-resistant agent. The invention further provides the method for preparing the steel-backing non-electroplating copper alloy based friction piece through the friction material and the application of the friction piece. The manufacturing cost of the prepared steel-backing non-electroplating copper alloy based friction piece is far lower than that of a steel-backing electroplating copper alloy based friction piece. The copper alloy based friction layer is firmly bonded to steel backing and free of cracks, stripping and layering are avoided, and the technical requirements and the market requirements are completely met, so that not only is the environment protected, but also resources are saved.
Description
Technical field
The present invention relates to field of powder metallurgy, particularly preparation method and the purposes that base frication material and friction member are closed in electro-coppering exempted from by steel backing.
Background technology
Powdered metallurgy copper conjunction base frication material (hereinafter referred to as: copper closes base frication material) be the one or both sides compressing copper conjunction based blank is attached to through plating treated steel backing (the title central layer had), thereafter pressure sintering is passed through again, make it be bonded to be integrated, through postorder process such as plane machining, chamfering, oil grooves.At present, internal copper closes the manufacture of base frication material is all such production model and flow process.
Steel backing plating obtains general utilization in friction material manufacturing technology, and requires strict, and such as copper closes the steel backing copper facing of base frication material, and thickness is generally at 0.01mm ~ 0.05mm, zinc-plated thereafter, thickness 0.01mm ~ 0.05mm.Some experts claim steel backing electrodeposited coating to be " centre " layer, and it is bridge and the tie of steel backing and Tong He basic unit bonding, and the quality of bond quality, depends on the quality of electrodeposited coating completely.In decades, it is all that to electroplate this technology by steel backing produced that copper closes base frication material, and the goods that base frication material is closed in electro-coppering exempted from by steel backing, at present beyond example temporarily on market uses.
People know, electroplating industry is a large evil source of current environmental pollution, and plating piece oil removing, rust cleaning need use a large amount of strong acid, highly basic.Wastewater streams after dirt enters soil, pollutes water source, the waste gas of release, pungent unpleasant, makes air quality degradation.The production of annual millions of tons friction material goods brings huge injury to environmental pollution; In addition, copper closes base frication material steel backing and needs copper facing, have also require copper facing after zinc-plated, nickel plating, consume a large amount of energy, as electric power, manpower, water resource etc.In a word, base frication material manufacturing technology is closed in steel backing electro-coppering, except increasing production cost, also for environmental pollution provides huge business opportunity and potential.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of and subtract dirt, consumption reduction, energy-conservation steel backing exempt from preparation method and the purposes that base frication material and friction member are closed in electro-coppering.
Technical scheme of the present invention is:
The invention provides steel backing and exempt from electro-coppering conjunction base frication material, constituent and the percentage by weight of described copper conjunction base frication material are: copper powder 50 ~ 84%, metallic bond 3 ~ 15%, friction modifier 5 ~ 20%, anti-wear agent 5 ~ 15%.
Further, described metallic bond is selected from least one in tin, aluminium, nickel, magnesium, antimony, molybdenum, zinc.
Further, at least one in described friction modifier chosen from Fe, lead, silica, mica, magnesia, aluminium oxide, zinc oxide, mullite, wollastonite, vermiculite.
Further, described anti-wear agent is selected from least one in molybdenum bisuphide, graphite, petroleum coke, calcining graphite, barium sulfate.
Invention further provides steel backing to exempt from electro-coppering and close base frication material and prepare the method for friction member, comprise the following steps:
S1. batch mixing: take metallic bond, friction modifier and anti-wear agent in proportion, inserts in batch mixer and stirs 0.5 hour, then take copper powder and insert in batch mixer, continues stirring 2 ~ 3 hours, obtains the powder mixed;
S2. base: according to the weight of differentiated friction part, is placed in the powder mixed in corresponding mould, at 1.5t-2.5t/cm
2pressure under, be pressed into blank;
S3. sinter: blank is affixed on the one side or two of exempting from the steel backing electroplated, is placed in vacuum sintering furnace, sinter under 760 ~ 900 DEG C (preferably 880 DEG C), be cooled to 180 DEG C after being then incubated 1 ~ 4 hour and hang stove, steel backing can be obtained and exempt from electro-coppering conjunction base friction member.
Further, the flow process of the batch mixing described in step S1 can be replaced: take copper powder, metallic bond, friction modifier and anti-wear agent in proportion, inserts in batch mixer and stirs 2 ~ 4 hours, obtain the powder mixed.
Further, described steel backing is the hot rolled plate be made up of metal material, and it is white to dimensional requirement that the two sides of hot rolled plate needs grinding to see.
Further, described steel backing is the cold-reduced sheet be made up of metal material, and cold-reduced sheet need meet steel backing drawing dimensional requirement, the two sides of the steel backing that cold-reduced sheet is made need through deoiling, decontamination is clean and tidy to smooth surface.
Present invention also offers the application of above-mentioned friction member in clutch.
The present invention compared with prior art has following features:
(1) steel backing obtained by is exempted from electro-coppering and is closed the raw material sources of base friction member extensively, and price is lower, and without the need to plating, its cost of manufacture closes the cost of manufacture of base friction member far below steel backing electro-coppering;
(2) steel backing exempt from electro-coppering close base frication material bonding firmly, flawless, without peeling off, without layering, meet completely technology will and market demands;
(3) feature that steel backing exempts from electro-coppering conjunction base frication material manufacturing technology maximum is the problem that the steel backing solving copper conjunction base frication material could must manufacture via plating, and it had both saved resource, protected environment again.
Detailed description of the invention
Below in conjunction with detailed description of the invention, detailed construction of the present invention is further described.
Embodiment 1
Constituent and the percentage by weight of copper conjunction base frication material are as follows:
Copper powder 71%;
Metallic bond 3%: be selected from aluminium 1.5%, zinc 1.5%;
Friction modifier 20%: be selected from lead 8%, magnesia 8%, silica 2%, vermiculite 2%;
Anti-wear agent 6%: be selected from barium sulfate 6%.
The concrete preparation technology of friction member is:
S1. batch mixing: take above-mentioned metallic bond, friction modifier and anti-wear agent in proportion, inserts in batch mixer and stirs 0.5 hour, then take copper powder and insert in batch mixer, continues stirring 2 hours, obtains the powder mixed;
S2. base: according to the weight of differentiated friction part, is placed in the powder mixed in corresponding mould, at 2t/cm
2pressure under, be pressed into blank;
S3. make steel backing: according to product drawing requirement, select corresponding metal material to make hot rolled plate as steel backing, it is white to dimensional requirement that two sides needs grinding to see;
S4. sinter: blank is affixed on the one side exempting from the steel backing electroplated, is placed in vacuum sintering furnace, sinter at 880 DEG C, be cooled to 180 DEG C after being then incubated 2 hours and hang stove, steel backing can be obtained and exempt from electro-coppering conjunction base friction member A1.
Embodiment 2
Prepare friction member A2 according to the method for embodiment 1, difference is, constituent and the percentage by weight of copper conjunction base frication material are as follows:
Copper powder 66%;
Metallic bond 6%: be selected from tin 5%, nickel 1%;
Friction modifier 18%: chosen from Fe 15%, magnesia 3%;
Anti-wear agent 10%: be selected from molybdenum bisuphide 2%, calcining graphite 3%, graphite 5%.
Embodiment 3
Prepare friction member A3 according to the method for embodiment 1, difference is, constituent and the percentage by weight of copper conjunction base frication material are as follows:
Copper powder 60%;
Metallic bond 8%: be selected from tin 5%, antimony 3%;
Friction modifier 20%: be selected from vermiculite 5%, zinc oxide 5%, magnesia 5%, plumbous 5%;
Anti-wear agent 12%: be selected from barium sulfate 6%, calcining graphite 6%.
Embodiment 4
Prepare friction member A4 according to the method for embodiment 1, difference is, constituent and the percentage by weight of copper conjunction base frication material are as follows:
Copper powder 78%;
Metallic bond 12%: be selected from magnesium 4%, aluminium 4%, molybdenum 4%;
Friction modifier 5%: be selected from mullite 3%, mica 2%;
Anti-wear agent 5%: be selected from petroleum coke 3%, molybdenum bisuphide 3%.
Steel backing obtained by above-described embodiment 1 ~ 4 is exempted from electro-coppering and is closed the raw material sources of base friction member extensively, and price is lower, and without the need to plating, its cost of manufacture closes the cost of manufacture of base friction member far below steel backing electro-coppering; Copper closes base frictional layer and steel backing bonds firmly, flawless, nothing are peeled off, without layering, the technology that meets completely is wanted and market demands, both protects environment, and again saves resource.
Embodiment 5
The friction member A1 selected prepared by embodiment 1 carries out friction-wear test detection as engineering machinery wet brake friction plate, detects as follows:
One, the experimental condition of wet brake is in table 1
The experimental condition of table 1 wet brake
Two, sample situation
Friction member A1: φ 118 × 56mm test ring, 8 the radial oil grooves in surface add helical oil groove;
Mating material: 65Mn, surface roughness Ra 1.6 μm, HRC42-46.
Three, foundation is detected
JB/T9713-1999，JB/T7909-1999
Four, result of the test
(1) average power density is 90w/cm
2time friction and wear test results, be shown in Table 2:
Table 2 average power density is 90w/cm
2time friction and wear test results
(2) average power density is 110w/cm
2time friction and wear test results, be shown in Table 3:
Table 3 average power density is 110w/cm
2time friction and wear test results
Five, test result
This product meets JB/T9713-1999 engineering machinery wet copper-based friction plate technical conditions.
Embodiment 6
The friction member A1 selected prepared by embodiment 1 carries out friction-wear test detection as earth mover (Ty320) steering clutch lining, and wherein the experimental condition of earth mover (Ty320) steering cluth, sample situation and detection are according to identical with embodiment 5.
Result of the test is as shown in table 4 and table 5:
Table 4 average power density is 90w/cm
2time friction and wear test results
Table 5 average power density is 110w/cm
2time friction and wear test results
Test result: this product meets JB/T9713-1999 engineering machinery wet copper-based friction plate technical conditions.
Embodiment 5 provides by powder metallurgy research institute of Central South University with the survey report of embodiment 6.
Claims (9)
1. steel backing is exempted from electro-coppering and is closed base frication material, it is characterized in that: constituent and the percentage by weight of described copper conjunction base frication material are: copper powder 50 ~ 84%, metallic bond 3 ~ 15%, friction modifier 5 ~ 20%, anti-wear agent 5 ~ 15%.
2. steel backing according to claim 1 is exempted from electro-coppering and is closed base frication material, it is characterized in that: described metallic bond is selected from least one in tin, aluminium, nickel, magnesium, antimony, molybdenum, zinc.
3. steel backing according to claim 1 is exempted from electro-coppering and is closed base frication material, it is characterized in that: at least one in described friction modifier chosen from Fe, lead, silica, mica, magnesia, aluminium oxide, zinc oxide, mullite, wollastonite, vermiculite.
4. steel backing according to claim 1 is exempted from electro-coppering and is closed base frication material, it is characterized in that: described anti-wear agent is selected from least one in molybdenum bisuphide, graphite, petroleum coke, calcining graphite, barium sulfate.
5. the method that electro-coppering conjunction base frication material prepares friction member exempted from by the steel backing according to any one of claim 1 ~ 4, it is characterized in that: comprise the following steps:
S1. batch mixing: take metallic bond, friction modifier and anti-wear agent in proportion, inserts in batch mixer and stirs 0.5 hour, then take copper powder and insert in batch mixer, continues stirring 2 ~ 3 hours, obtains the powder mixed;
S2. base: according to the weight of differentiated friction part, is placed in the powder mixed in corresponding mould, at 1.5t-2.5t/cm
2pressure under, be pressed into blank;
S3. sinter: blank is affixed on the one side or two of exempting from the steel backing electroplated, is placed in vacuum sintering furnace, sinter at 760 ~ 900 DEG C, be cooled to 180 DEG C after being then incubated 1 ~ 4 hour and hang stove, steel backing can be obtained and exempt from electro-coppering conjunction base friction member.
6. the method that electro-coppering conjunction base frication material prepares friction member exempted from by steel backing according to claim 5, it is characterized in that: the flow process of the batch mixing described in step S1 can be replaced: take copper powder, metallic bond, friction modifier and anti-wear agent in proportion, insert in batch mixer and stir 2 ~ 4 hours, obtain the powder mixed.
7. the steel backing according to claim 5 or 6 is exempted from electro-coppering and is closed base frication material and prepare the method for friction member, it is characterized in that: described steel backing is the hot rolled plate be made up of metal material, and it is white that the two sides of hot rolled plate needs grinding to see.
8. the steel backing according to claim 5 or 6 is exempted from electro-coppering and is closed base frication material and prepare the method for friction member, it is characterized in that: described steel backing is the cold-reduced sheet be made up of metal material, the two sides of cold-reduced sheet need through deoiling, decontamination is clean and tidy to smooth surface.
9. the application of the friction member described in claim 5 or 6 in clutch.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480645A (en) * | 2018-02-07 | 2018-09-04 | 东风商用车有限公司 | Automobile synchronizer ring material and preparation method thereof |
| CN109854650A (en) * | 2019-03-27 | 2019-06-07 | 山东百德瑞轨道交通科技有限公司 | A kind of bullet train brake lining friction element and preparation method thereof |
| CN113073225A (en) * | 2021-02-10 | 2021-07-06 | 华东交通大学 | Brake material for medium-low speed magnetic suspension train and preparation method thereof |
| CN114210971A (en) * | 2021-12-10 | 2022-03-22 | 西安航空制动科技有限公司 | Copper-based powder metallurgy friction material for brake pad of motor train unit and preparation method thereof |
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| CN102605209A (en) * | 2012-03-27 | 2012-07-25 | 锦州捷通铁路机械制造有限公司 | Brake pad friction plate manufactured by powder metallurgy and used for high-speed train and preparation process of brake pad friction plate |
| CN103909270A (en) * | 2013-12-19 | 2014-07-09 | 浙江中达精密部件股份有限公司 | High-performance powder metallurgy oil-containing bearing and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480645A (en) * | 2018-02-07 | 2018-09-04 | 东风商用车有限公司 | Automobile synchronizer ring material and preparation method thereof |
| CN109854650A (en) * | 2019-03-27 | 2019-06-07 | 山东百德瑞轨道交通科技有限公司 | A kind of bullet train brake lining friction element and preparation method thereof |
| CN109854650B (en) * | 2019-03-27 | 2020-11-13 | 山东百德瑞轨道交通科技有限公司 | Friction unit for high-speed train brake pad and preparation method thereof |
| CN113073225A (en) * | 2021-02-10 | 2021-07-06 | 华东交通大学 | Brake material for medium-low speed magnetic suspension train and preparation method thereof |
| CN114210971A (en) * | 2021-12-10 | 2022-03-22 | 西安航空制动科技有限公司 | Copper-based powder metallurgy friction material for brake pad of motor train unit and preparation method thereof |
| CN114210971B (en) * | 2021-12-10 | 2024-06-07 | 西安航空制动科技有限公司 | Copper-based powder metallurgy friction material for brake pads of motor train unit and preparation method of copper-based powder metallurgy friction material |
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