CN107876755A - A kind of piston lever of reducer and preparation method thereof - Google Patents
A kind of piston lever of reducer and preparation method thereof Download PDFInfo
- Publication number
- CN107876755A CN107876755A CN201711417617.3A CN201711417617A CN107876755A CN 107876755 A CN107876755 A CN 107876755A CN 201711417617 A CN201711417617 A CN 201711417617A CN 107876755 A CN107876755 A CN 107876755A
- Authority
- CN
- China
- Prior art keywords
- powder
- parts
- piston lever
- copper
- reducer
- 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
-
- 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
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- 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
- B22F1/17—Metallic particles coated with metal
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to automobile technical field, more particularly to a kind of piston lever of reducer and preparation method thereof.The raw material of the piston lever of reducer includes the component of following parts by weight：Fe powder：65 80 parts；Copper composite powder：28 parts；Nickel powder：0.5 1.2 parts；Antimony powder：0.3 0.8 parts；Rare earth oxide：0.2 0.8 parts；Lubricant：0.3 0.8 parts；The copper composite powder is that Copper Powder Surface coats manganese layer.The preparation method comprises the following steps：The raw material is weighed by proportioning and carries out ball milling, and dry-pressing formed after spray drying, shaped article is warming up to 450 550 DEG C, and insulation is ultrasonically treated 20 30min, is pressed again after cooling, is subsequently placed in vacuum drying oven and is warming up to 1,500 1700 DEG C, the 2h of heat preservation sintering 1.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of piston lever of reducer and preparation method thereof.
Background technology
Damper (Absorber), concussion when being for suppressing to rebound after spring shock-absorbing and the impact from road surface.Extensively
It is general to be used for automobile, to accelerate the decay of vehicle frame and body vibrations, to improve ride of vehicle.By uneven road surface
When, although shock-absorbing spring can filter the vibrations on road surface, spring itself also has reciprocating motion, and damper is exactly to be used for pressing down
Make this spring jump.Wherein bottom valve seat assembly is one of important spare part therein.The shock absorption principle of damper is to work as car
Vibrated when there is relative motion between frame or wheel and vehicle body, the piston in damper moves up and down, and piston rod is in motion
During, shock absorber fluid is constantly circulated by bottom valve seat assembly and piston assembly between working cylinder and oil drum, so as to dynamic
Heat energy can be converted into be dispersed into air.During piston rod pull-up, the compensator valve plate on bottom valve seat assembly is opened, damping
Device oil enters in working cylinder from oil drum, and during piston rod compresses, the shock absorber fluid in working cylinder passes through on valve body
Compression valve block pushed up and driven into oil drum.
Piston lever of reducer is part important in damper, is had very to its hardness, intensity and wearability and measure of precision
High requirement.Traditional generally use casting processing mode, dimensional accuracy than relatively low, it is necessary to carry out subsequent technique processing,
The component waste rate processed is higher, and in addition from the aspect of the quality of part, casting the quality processed can not also expire
Foot requires.Compared with casting method, powder metallurgy process is very competitive in precision and cost these two aspects, in casting
Some problems, such as segregation, amount of machining are big, can be then reduced or avoided with powder metallurgy process.
The content of the invention
For disadvantages mentioned above existing for prior art, the present invention provides a kind of piston lever of reducer and preparation method thereof, leads to
Cross the combination of component and technique so that piston lever of reducer performance, which greatly promotes, meets need of work.
The above-mentioned purpose of the present invention can be realized by following technical proposal：A kind of piston lever of reducer, the damper
The raw material of piston rod includes the component of following parts by weight：
Fe powder：65-80 parts；Copper composite powder：2-8 parts；Nickel powder：0.5-1.2 parts；Antimony powder：0.3-0.8 parts；Rare earth oxide：
0.2-0.8 parts；Lubricant：0.3-0.8 parts；
The copper composite powder is that Copper Powder Surface coats manganese layer.
Iron powder and copper powder are the common metal elements in powder metallurgy process, because the fusing point of copper powder is low, in sintering process,
Copper powder first dissolves to form liquid phase, because copper liquid is good relative to the wetability of iron, the edge of iron powder can be impregnated with, by iron powder and iron powder
Between combination cut-off, cause the intensity of sintered body to decline, sintering volume expansion, the dimensional accuracy of sintered body also declines.In this hair
In bright, using manganese coat copper composite powder, in sintering process, copper melts at first, because copper surface parcel manganese layer so that copper without
Method contacts iron-based body, avoids copper liquid and is impregnated with the adverse effect that iron powder is brought, as the raising of sintering temperature, manganese, iron are successively molten
Change, the fusing of manganese promotes iron fusing, is now contacted with each other between each element, forms uniform sintered body.In the present invention, also add
Antimony powder and rare earth oxide are added, the two interacts in sintering process, can generate low melting point in the side of matrix richness antimony
Glass phase composite oxides RESb5O14, this composite oxides is first changed into liquid phase in initial stage of sintering, and the liquid phase generated is to iron
Grain is impregnated with, and reduces the chance that copper liquid contacts with iron powder again, because surface tension is drawn together the iron particle of surrounding,
So as to cause rapidly to be densified, the later stage is sintered, composite oxides are distributed in crystal boundary, crystal grain are grown up and plays pinning interception,
Further improve crystal grain refinement degree.
Preferably, the particle diameter of the Fe powder is 100-950nm, the particle diameter of the copper powder is 3-5 μm, the grain of the nickel powder
Footpath is 1-2.8 μm.The fusing point of material is a value range, and particle diameter is smaller, minimum of its fusing point closer to scope.In the present invention
In, from the metallic element of different-grain diameter, the compressing degree of packing on the one hand can be improved, improves sintering quality, the opposing party
Face, the particle diameter that the higher metallic element of fusing point is selected is smaller, makes the fusing point convergence balance of three kinds of elements, improves sintering quality.
Preferably, the preparation method of the copper composite powder includes：Manganese salt is dissolved in acetone, ethanol or water, then
Copper powder is added, is uniformly mixing to obtain slurries, slurries obtain powder after centrifuging, being spray-dried, and powder obtains copper after heating and answered
Close powder.
Preferably, the mass ratio of the manganese salt and copper powder is (0.3-0.6)：1.
Preferably, the manganese salt is the one or more of manganese carbonate, manganese sulfate and manganese nitrate.
Preferably, described heat in an inert atmosphere, at 800-1000 DEG C, to heat 30-50min.
Preferably, the rare earth oxide is yittrium oxide, lanthana, samarium oxide, gadolinium oxide, one kind or more of holimium oxide
Kind.Further preferably, the rare earth oxide is lanthana.Lanthana with respect to other rare earth oxides, can preferably with antimony
Powder acts on.
Preferably, the lubricant is the one or more of paraffin, hard fatty acids zinc, lithium stearate or Tissuemat E.
Further preferably, the lubricant is Tissuemat E.
Another object of the present invention is achieved through the following technical solutions：A kind of preparation method of piston lever of reducer, institute
Preparation method is stated to comprise the following steps：The raw material, which is weighed, by proportioning carries out ball milling, dry-pressing formed after spray drying, shaping production
Product are warming up to 450-550 DEG C, and insulation is ultrasonically treated 20-30min, are then cooled down with 20-50 DEG C/s, multiple pressure, are subsequently placed at vacuum
1500-1700 DEG C is warming up in stove, heat preservation sintering 1-2h.
Dry-pressing formed carried out preferably, described under 150-200MPa pressure；It is described to be pressed in 350-450MPa pressure again
Lower progress.
First at 450-550 DEG C, insulation is ultrasonically treated product after shaping, and ultrasound removes the gas inside powder, reduces
The generation of follow-up sintering hole, the cooling required after degasification are quickly carried out, in order to avoid during Slow cooling, gas escapes again
Enter.After gas removes, pressed compact becomes loose, it is necessary to which further multiple pressure is allowed to be compacted.The pressure of shaping should not be too high, after influenceing
The ultrasonic degassing effect of phase, multiple pressure use elevated pressures, the pressed compact after compacting is deaerated again.
Compared with prior art, the copper composite powder of the invention by adding Surface coating manganese in conventional sintered powder, then
With reference to the special preparation technology of the present invention so that the mutual promoting action between element in sintering process, improve the hard of product
Degree, wearability, improve product density and reduce product size tolerance.And it is provided by the present invention preparation is simple, fit
Close industrialized production.
Embodiment
It is the specific embodiment of the present invention below, technical scheme is further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：70 parts；Copper composite powder：5 parts；Nickel powder：1 part；Antimony powder：0.5 part；Yittrium oxide：0.5 part；Hard fatty acids zinc：
0.5 part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 1 μm, and the particle diameter of the copper powder is 1 μm, described
The particle diameter of nickel powder is 1 μm.
The preparation method of the copper composite powder includes：Manganese sulfate is dissolved in acetone, then adds copper powder, manganese sulfate and
The mass ratio of copper powder is 0.5：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 4000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 900 DEG C, heating 40min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 150MPa pressure, shaped article is warming up to 500 DEG C, and insulation is ultrasonically treated 30min, then with 30 DEG C/s
Speed cooled down, pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1700 DEG C, heat preservation sintering 1.5h.
Embodiment 2
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：70 parts；Copper composite powder：5 parts；Nickel powder：1 part；Antimony powder：0.5 part；Yittrium oxide：0.5 part；Hard fatty acids zinc：
0.5 part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 500nm, and the particle diameter of the copper powder is 4 μm, institute
The particle diameter for stating nickel powder is 1 μm.
The preparation method of the copper composite powder includes：Manganese sulfate is dissolved in acetone, then adds copper powder, manganese sulfate and
The mass ratio of copper powder is 0.5：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 4000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 900 DEG C, heating 40min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 150MPa pressure, shaped article is warming up to 500 DEG C, and insulation is ultrasonically treated 30min, then with 30 DEG C/s
Speed cooled down, pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1700 DEG C, heat preservation sintering 1.5h.
Embodiment 3
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：70 parts；Copper composite powder：5 parts；Nickel powder：1 part；Antimony powder：0.5 part；Lanthana：0.5 part；Hard fatty acids zinc：
0.5 part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 500nm, and the particle diameter of the copper powder is 4 μm, institute
The particle diameter for stating nickel powder is 1 μm.
The preparation method of the copper composite powder includes：Manganese sulfate is dissolved in acetone, then adds copper powder, manganese sulfate and
The mass ratio of copper powder is 0.5：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 4000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 900 DEG C, heating 40min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 150MPa pressure, shaped article is warming up to 500 DEG C, and insulation is ultrasonically treated 30min, then with 30 DEG C/s
Speed cooled down, pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1700 DEG C, heat preservation sintering 1.5h.
Embodiment 4
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：70 parts；Copper composite powder：5 parts；Nickel powder：1 part；Antimony powder：0.5 part；Lanthana：0.5 part；Tissuemat E：0.5
Part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 500nm, and the particle diameter of the copper powder is 4 μm, described
The particle diameter of nickel powder is 1 μm.
The preparation method of the copper composite powder includes：Manganese sulfate is dissolved in acetone, then adds copper powder, manganese sulfate and
The mass ratio of copper powder is 0.5：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 4000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 900 DEG C, heating 40min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 150MPa pressure, shaped article is warming up to 500 DEG C, and insulation is ultrasonically treated 30min, then with 30 DEG C/s
Speed cooled down, pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1700 DEG C, heat preservation sintering 1.5h.
Embodiment 5
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：65 parts；Copper composite powder：2 parts；Nickel powder：0.5 part；Antimony powder：0.3 part；Lanthana：0.2 part；Tissuemat E：
0.3 part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 200nm, and the particle diameter of the copper powder is 5 μm, institute
The particle diameter for stating nickel powder is 2 μm.
The preparation method of the copper composite powder includes：Manganese sulfate is dissolved in acetone, then adds copper powder, manganese sulfate and
The mass ratio of copper powder is 0.3：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 5000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 1000 DEG C, heating 30min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 200MPa pressure, shaped article is warming up to 450 DEG C, and insulation is ultrasonically treated 25min, then with 40 DEG C/s
Speed cooled down, pressed again under 450MPa, be subsequently placed in vacuum drying oven and be warming up to 1600 DEG C, heat preservation sintering 1.6h.
Embodiment 6
The raw material of the piston lever of reducer includes the component of following parts by weight：
Fe powder：80 parts；Copper composite powder：7 parts；Nickel powder：1.2 part；Antimony powder：0.7 part；Lanthana：0.6 part；Tissuemat E：
0.7 part；The copper composite powder is that Copper Powder Surface coats manganese layer.The particle diameter of Fe powder is 800nm, and the particle diameter of the copper powder is 5 μm, institute
The particle diameter for stating nickel powder is 1.5 μm.
The preparation method of the copper composite powder includes：Manganese carbonate is dissolved in acetone, then adds copper powder, manganese carbonate and
The mass ratio of copper powder is 0.6：1.Slurries are uniformly mixing to obtain, slurries obtain powder after 3000r/min is centrifuged, is spray-dried,
Powder is in N2In, at 900 DEG C, heating 40min handle Surface coating manganese copper composite powder.
The preparation method of the piston rod comprises the following steps：The raw material, which is weighed, by proportioning carries out ball milling, spray drying
Afterwards, dry-pressing formed under 150MPa pressure, shaped article is warming up to 550 DEG C, and insulation is ultrasonically treated 20min, then with 20 DEG C/s
Speed cooled down, pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1650 DEG C, heat preservation sintering 1.2h.
Comparative example 1
The difference of comparative example 1 and embodiment 4 is that comparative example 1 uses Copper powder, other same as Example 4.
Comparative example 2
The difference of comparative example 2 and embodiment 4 is that the raw material of comparative example 2 does not include antimony powder, other same as Example 4.
Comparative example 3
The difference of comparative example 3 and embodiment 4 is that the raw material of comparative example 3 is：Fe powder：85 parts；Copper composite powder：9 parts；Nickel
Powder：0.4 part；Antimony powder：0.9 part；Lanthana：0.9 part；Tissuemat E：0.5 part；The copper composite powder is that Copper Powder Surface coats manganese
Layer.It is other same as Example 4.
Comparative example 4
The difference of comparative example 4 and embodiment 4 is that the preparation method of the piston rod of comparative example 4 comprises the following steps：By with
Ball milling is carried out than weighing the raw material, it is dry-pressing formed under 150MPa pressure after spray drying, it is subsequently placed in vacuum drying oven and heats up
To 1700 DEG C, heat preservation sintering 1.5h.It is other same as Example 4.
Comparative example 5
The difference of comparative example 5 and embodiment 4 is that the preparation method of the piston rod of comparative example 5 comprises the following steps：By with
Ball milling is carried out than weighing the raw material, it is dry-pressing formed under 400MPa pressure after spray drying, it is subsequently placed in vacuum drying oven and heats up
To 1700 DEG C, heat preservation sintering 1.5h.It is other same as Example 4.
Comparative example 6
The difference of comparative example 6 and embodiment 4 is that the preparation method of the piston rod of comparative example 6 comprises the following steps：By with
Ball milling is carried out than weighing the raw material, dry-pressing formed under 150MPa pressure after spray drying, shaped article is warming up to 500 DEG C,
30min is incubated, is then cooled down with 30 DEG C/s speed, is pressed again under 400MPa, be placed in vacuum drying oven and be warming up to 1700 DEG C,
Heat preservation sintering 1.5h.It is other same as Example 4.
Comparative example 7
The difference of comparative example 7 and embodiment 4 is that the preparation method of the piston rod of comparative example 7 comprises the following steps：By with
Ball milling is carried out than weighing the raw material, dry-pressing formed under 150MPa pressure after spray drying, shaped article is warming up to 500 DEG C,
Insulation is ultrasonically treated 30min, is then cooled down with 30 DEG C/s speed, presses, be subsequently placed in vacuum drying oven again under 150MPa
1700 DEG C are warming up to, heat preservation sintering 1.5h.It is other same as Example 4.
Comparative example 8
The difference of comparative example 8 and embodiment 4 is that the preparation method of the piston rod of comparative example 8 is：Weighed by proportioning described
Raw material carries out ball milling, dry-pressing formed under 400MPa pressure after spray drying, and shaped article is warming up to 500 DEG C, is incubated at ultrasound
30min is managed, is then cooled down with 30 DEG C/s speed, is pressed again under 400MPa, be subsequently placed in vacuum drying oven and be warming up to 1700
DEG C, heat preservation sintering 1.5h.It is other same as Example 4.
Comparative example 9
The difference of comparative example 9 and embodiment 4 is that comparative example 9 is entered after insulation is ultrasonically treated with the speed with 10 DEG C/s
Row cooling.It is other same as Example 4.
Piston rod that embodiment 1-6 and comparative example 1-9 are prepared carries out hardness, wearability, density, dimensional tolerance
Measurement.As a result it is as shown in table 1.
Piston rod the performance test results prepared by the embodiment 1-6 of table 1 and comparative example 1-9
From table 1 it follows that 1-3 of the embodiment of the present invention has preferable performance parameter, embodiment 4-6 is as the present invention
Optimum embodiment, performance is optimal, and comparative example 1-9 is because of essential component or the missing of step, and its performance parameter is far below implementing
Example 4.
Specific embodiment described in the present invention is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of piston lever of reducer, it is characterised in that the raw material of the piston lever of reducer includes the group of following parts by weight
Point：
Fe powder：65-80 parts；Copper composite powder：2-8 parts；Nickel powder：0.5-1.2 parts；Antimony powder：0.3-0.8 parts；Rare earth oxide：0.2-
0.8 part；Lubricant：0.3-0.8 parts；
The copper composite powder is that Copper Powder Surface coats manganese layer.
2. a kind of piston lever of reducer according to claim 1, it is characterised in that the particle diameter of the Fe powder is 100-
950nm, the particle diameter of the copper powder is 3-5 μm, and the particle diameter of the nickel powder is 1-2.8 μm.
A kind of 3. piston lever of reducer according to claim 1 or 2, it is characterised in that the preparation side of the copper composite powder
Method includes：Manganese salt is dissolved in acetone, ethanol or water, then adds copper powder, is uniformly mixing to obtain slurries, slurries through centrifugation,
Powder is obtained after spray drying, powder obtains surface copper composite powder after heating.
4. a kind of piston lever of reducer according to claim 3, it is characterised in that the mass ratio of the manganese salt and copper powder is
(0.3-0.6)：1.
5. a kind of piston lever of reducer according to claim 3 or 4, it is characterised in that the manganese salt is manganese carbonate, sulfuric acid
One or more in manganese and manganese nitrate.
6. a kind of piston lever of reducer according to claim 3, it is characterised in that described heat is in inert atmosphere
In, at 800-1000 DEG C, heat 30-50min.
A kind of 7. piston lever of reducer according to claim 1, it is characterised in that the rare earth oxide be yittrium oxide,
Lanthana, samarium oxide, gadolinium oxide, the one or more of holimium oxide.
8. a kind of piston lever of reducer according to claim 1, it is characterised in that the lubricant is paraffin, tallow
The one or more of sour zinc, lithium stearate or Tissuemat E.
9. a kind of preparation method of piston lever of reducer as claimed in claim 1, it is characterised in that the preparation method includes
Following steps：The raw material is weighed by proportioning and carries out ball milling, and dry-pressing formed after spray drying, shaped article is warming up to 450-550
DEG C, insulation is ultrasonically treated 20-30min, is then cooled down with 20-50 DEG C/s, multiple pressure, is placed in vacuum drying oven and is warming up to 1500-1700
DEG C, heat preservation sintering 1-2h.
10. the preparation method of a kind of piston lever of reducer according to claim 9, it is characterised in that described dry-pressing formed
Carried out under 150-200MPa pressure；Described be pressed in again under 350-450MPa pressure is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417617.3A CN107876755A (en) | 2017-12-25 | 2017-12-25 | A kind of piston lever of reducer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417617.3A CN107876755A (en) | 2017-12-25 | 2017-12-25 | A kind of piston lever of reducer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107876755A true CN107876755A (en) | 2018-04-06 |
Family
ID=61772248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711417617.3A Pending CN107876755A (en) | 2017-12-25 | 2017-12-25 | A kind of piston lever of reducer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107876755A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023143A (en) * | 2018-08-10 | 2018-12-18 | 天津北特汽车零部件有限公司 | A kind of processing technology of piston lever of reducer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379705A (en) * | 1976-12-24 | 1978-07-14 | Nippon Funmatsu Goukin Kk | Production of piston for shock absorber |
| EP0658611A1 (en) * | 1993-12-18 | 1995-06-21 | Ringsdorff Sinter GmbH | Injection molded guiding and sealing elements on sintered parts for a shock absorber |
| CN201496460U (en) * | 2009-07-22 | 2010-06-02 | 宁波市金波工贸有限公司 | Oil-gas separated shock absorber |
| CN203656025U (en) * | 2013-11-14 | 2014-06-18 | 浙江金波减震器制造有限公司 | Impact resistance shock absorber |
| CN104338927A (en) * | 2013-07-29 | 2015-02-11 | 扬州天健机械制造有限公司 | Automobile shock absorber piston and production technique thereof |
| CN204430267U (en) * | 2015-02-10 | 2015-07-01 | 宁波宁港永磁材料有限公司 | Cylinder permanent magnet mould |
-
2017
- 2017-12-25 CN CN201711417617.3A patent/CN107876755A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379705A (en) * | 1976-12-24 | 1978-07-14 | Nippon Funmatsu Goukin Kk | Production of piston for shock absorber |
| EP0658611A1 (en) * | 1993-12-18 | 1995-06-21 | Ringsdorff Sinter GmbH | Injection molded guiding and sealing elements on sintered parts for a shock absorber |
| CN201496460U (en) * | 2009-07-22 | 2010-06-02 | 宁波市金波工贸有限公司 | Oil-gas separated shock absorber |
| CN104338927A (en) * | 2013-07-29 | 2015-02-11 | 扬州天健机械制造有限公司 | Automobile shock absorber piston and production technique thereof |
| CN203656025U (en) * | 2013-11-14 | 2014-06-18 | 浙江金波减震器制造有限公司 | Impact resistance shock absorber |
| CN204430267U (en) * | 2015-02-10 | 2015-07-01 | 宁波宁港永磁材料有限公司 | Cylinder permanent magnet mould |
Non-Patent Citations (1)
| Title |
|---|
| 刘勃含: "《魔幻的科学在魔术中展现》", 31 December 2014, 现代出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023143A (en) * | 2018-08-10 | 2018-12-18 | 天津北特汽车零部件有限公司 | A kind of processing technology of piston lever of reducer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110523997B (en) | High-entropy alloy particle reinforced subzero treatment aluminum-based composite material and preparation method thereof | |
| US20210197277A1 (en) | MN-CU-Based Damping Alloy Powder For Use In Selective Laser Melting Process And Preparation Method Thereof | |
| EP4066965A1 (en) | Lightweight wear-resistant aluminum-based powder metallurgy composite material rail transit brake disc and preparation method therefor | |
| CN106544570B (en) | A kind of high density nonmagnetic steel balance weight part and preparation method thereof | |
| CN105149569A (en) | Powder metallurgy damper piston rod and preparation method thereof | |
| CN108342601B (en) | Powder metallurgy method-based preparation method of Ti22Al25NbxV alloy | |
| CN106756196A (en) | A kind of preparation method of carborundum aluminium base brake disk material | |
| CN105478743A (en) | Guider of automobile shock absorber and manufacturing method thereof | |
| CN107876755A (en) | A kind of piston lever of reducer and preparation method thereof | |
| CN106111978B (en) | A kind of ultralow brake shoe and the preparation method of rubbing of railway freight-car powder metallurgy | |
| CN110746941A (en) | Novel shape-stabilized heat-conducting enhanced composite phase change energy storage material and preparation method thereof | |
| CN111545746B (en) | Method for improving density and performance of microwave sintered ferromagnetic high-entropy alloy | |
| CN109454225A (en) | A kind of basal cell La-Fe-Si temperature magnetic refrigerating composite material and preparation method | |
| CN107584109A (en) | A kind of automobile absorber guider and preparation method thereof | |
| US3902861A (en) | Composite material | |
| CN108130483B (en) | A kind of guider of shock absorber and preparation method thereof | |
| CN110039056B (en) | Preparation method of iron-based composite material | |
| CN108130484A (en) | A kind of bottom valve of shock absorber and preparation method thereof | |
| CN104819126B (en) | Bearing and preparation method and compressor and refrigeration plant for compressor | |
| CN109972021B (en) | Preparation method of Fe-P series powder metallurgy magnetic friction material with high saturation magnetization | |
| CN105886815A (en) | Method for preparing silicon-magnesium alloy by means of vacuum sintering | |
| CN106583711A (en) | Preparation method of low-friction piston for electric automobile shock absorber | |
| CN113563095A (en) | Preparation method of metal ceramic brake pad and carbon ceramic brake disc and friction pair dual | |
| CN111590066A (en) | Novel method for processing powder metallurgy brake pad friction block | |
| CN109322962A (en) | A kind of automobile absorber guider |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |
|
| RJ01 | Rejection of invention patent application after publication |