CN103990774B - A kind of semi-solid squeeze casting mould of composite bearing - Google Patents
A kind of semi-solid squeeze casting mould of composite bearing Download PDFInfo
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- CN103990774B CN103990774B CN201410229086.5A CN201410229086A CN103990774B CN 103990774 B CN103990774 B CN 103990774B CN 201410229086 A CN201410229086 A CN 201410229086A CN 103990774 B CN103990774 B CN 103990774B
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Abstract
A kind of semi-solid squeeze casting mould of composite bearing, comprise pressurizing unit, fixed mold device, moving mold device, wherein fixed mold device inside is provided with the pressurizing unit be mated together, it is moving mold device on the upside of fixed mold device, during use, ready semi-solid blank is put into the pressurizing unit of preheating and the mold cavity of fixed mold device composition, and decline moving mold device carries out matched moulds rapidly, promote the semi-solid squeeze casting shaping that pressurizing unit completes bush material subsequently, after shaping completes, rising moving mold device carries out parting, and by rising pressurizing unit again, the composite bearing of shaping is ejected.Utilize the present invention can be shaped the composite bearing of high comprehensive performance, have that technical process is simple, rationally, cost is low, the advantage that efficiency is high.
Description
Technical field
The invention belongs to metal semi-solid squeeze casting technology field, particularly relate to a kind of semi-solid squeeze casting mould of composite bearing.
Background technology
Semi-solid processing is a kind of metal forming method that professor Flemings of 20 century 70 Massachusetts Institute Technologies proposes.So-called semi-solid processing, be exactly to the temperature between solidus and liquidus curve by METAL HEATING PROCESS, held for some time, to obtain spherical or subglobose crystal grain, and then die casting, extruding or die-forging forming are carried out to it, be a kind of manufacturing process between casting (pure liquid state) and forging and stamping (pure solid-state).Spherical or subglobose semi solid slurry, have the advantages such as low and after being shaped the part performance of good fluidity, plastic force is good, therefore this technique is subject to increasing attention.
Along with comprehensive fast development of Chinese society economy; transportation is also in develop rapidly; automobile engine day by day at a high speed, high-power, low energy consumption, miniaturization, lightweight and high pressure-charging strengthening future development; simultaneously; people require day by day to improve to environmental protection consciousness and own health, and desirably engine is environment-friendly type, free of contamination.Bearing shell is as one of the strength member of automobile engine, and the quality of its performance directly affects the speed of engine, bearing capacity, functional reliability and service life.Therefore, the performance of people to bearing shell it is also proposed higher requirement: have good anti-attrition, wearability and anti-bite viscosity; Good friction compliance, embeddability, running-in ability; Enough intensity and resistance to corrosion; Good thermal conductivity, public welfare, economy and the feature of environmental protection.
Early stage bush material is based on bus alloy, bearing shell adopts casting technique to produce, it mainly comprises karmarsch alloy and lead-base bearing alloy, its microstructure feature is, soft phase matrix is uniform-distribution with hard phase particle, therefore there is the surfaces characteristic such as extraordinary compatibility, compliance and embedded type, but because bearing capacity is too poor, fatigue strength is lower, and sharply decline along with operating temperature raises mechanical strength, babbit can not meet the requirement of automobile engine.
Present stage, automobile engine bearing mainly adopted copper base and acieral two class bush material to manufacture, wherein, aluminium bearing material has good thermal conductivity, wearability, seizure resistance, wearability and fatigue strength, and proportion is lighter, but its low strength, for this deficiency, the more way of current employing is: by certain method acieral is compounded in steel substrate and forms steel back aluminium ply-metal, to make up the shortcoming of acieral intensity and hardness deficiency, then, this steel back aluminium ply-metal volume is welded into cylinder, the machined carrying out bearing shell is shaped.The method can well make up the shortcoming of acieral intensity and hardness deficiency, but still have that acieral wears no resistance, the interface bond strength of composite plate is wayward, roll of steel plate is welded into not high, the follow-up machined of the weld strength after cylinder difficulty and whole bearing shell manufacturing process is complicated, high in cost of production shortcoming.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of semi-solid squeeze casting mould of composite bearing, utilizing this mould the semi-solid blank prepared can be prepared the composite bearing of high comprehensive performance by Extrution casting technique.
In order to achieve the above object, the present invention takes following technical scheme:
A kind of semi-solid squeeze casting mould of composite bearing, comprise pressurizing unit I, fixed mold device II and moving mold device III three parts, wherein fixed mold device II inside is provided with the pressurizing unit I be mated together, fixed mold device II top is moving mold device III, ready semi-solid blank is put into the mold cavity that the pressurizing unit I of preheating and fixed mold device II form, and the moving mold device III that declines carries out matched moulds, promote the semi-solid squeeze casting shaping that pressurizing unit I completes bush material subsequently, rising moving mold device III carries out parting, and by rising pressurizing unit I again, the composite bearing of shaping is ejected.
Described fixed mold device II comprises mold base 2, mould lower cushion block 3 is equipped with on the upside of mold base 2, bearing shell lower cushion block 6 is equipped with on the upside of mould lower cushion block 3, mould steel bushing 5 is equipped with inside bearing shell lower cushion block 6, mould steel bushing 5 inside is provided with the semi-solid blank 14 of bearing shell, be equipped with bearing shell intermediate mass 7 on the upside of bearing shell lower cushion block 6, there is bearing shell steel bushing 12 bearing shell intermediate mass 7 inside, and bearing shell steel bushing 12 is communicated with mould steel bushing 5;
Described pressurizing unit I comprises bearing shell stopper rod 1, bearing shell stopper rod 1 and mould steel bushing 5 coordinate, and the blank extrusion casint of the semi-solid blank 14 of the bearing shell in mould steel bushing 5 being configured as the composite bearing 19 that bush material 13 is also made up of bush material 13 and bearing shell steel bushing 12 is the most at last extruded;
Described moving mold device III comprises cushion block 8 on bearing shell, and bearing shell is push pedal 9 on mould on the upside of cushion block 8, bearing shell is bearing shell core 11 on the downside of cushion block 8, cushion block 8 is equipped with bearing shell guide post 18 with bearing shell;
Mold base 2 and mould lower cushion block 3 are fixed together; Bearing shell lower cushion block 6 and mould lower cushion block 3 are fixed together; Bearing shell intermediate mass 7 and bearing shell lower cushion block 6 are fixed together; On bearing shell, on cushion block 8 and mould, push pedal 9 is fixed together; On bearing shell, cushion block 8 and bearing shell core 11 are fixed together.
Described mold base 2 and mould lower cushion block 3 are fixed together by the first screw 4; Bearing shell lower cushion block 6 and mould lower cushion block 3 are fixed together by the 3rd screw 15; Bearing shell intermediate mass 7 and bearing shell lower cushion block 6 are fixed together by the 4th screw 16; On bearing shell, on cushion block 8 and mould, push pedal 9 is fixed together by the 5th screw 17; On bearing shell, cushion block 8 and bearing shell core 11 are fixed together by the second screw 10.
Advantage of the present invention: relative to prior art, metal semi-solid squeeze casting technology is applied in the shaping aspect of bearing shell by the present invention, provide a kind of semi-solid squeeze casting mould of composite bearing, utilize this die device can prepare the composite bearing of high comprehensive performance, there is technical process simple, reasonable, cost is low, the advantage that efficiency is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is side-looking and the partial sectional view of Fig. 1.
Fig. 3 is the enlarged partial sectional view of the cavity positions of Fig. 1.
Fig. 4 is the schematic diagram of bearing shell steel bushing of the present invention.
Fig. 5 is the schematic diagram of bush material of the present invention.
Fig. 6 is the schematic diagram of bearing shell drip molding of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
With reference to Fig. 1, a kind of semi-solid squeeze casting mould of composite bearing, comprise pressurizing unit I, fixed mold device II and moving mold device III three parts, wherein fixed mold device II inside is provided with the pressurizing unit I be mated together, fixed mold device II top is moving mold device III, ready semi-solid blank is put into the mold cavity that the pressurizing unit I of preheating and fixed mold device II form, and the moving mold device III that declines carries out matched moulds, promote the semi-solid squeeze casting shaping that pressurizing unit I completes bush material subsequently, rising moving mold device III carries out parting, and by rising pressurizing unit I again, the composite bearing of shaping is ejected.
With reference to Fig. 1, described fixed mold device II comprises mold base 2, mould lower cushion block 3 is equipped with on the upside of mold base 2, bearing shell lower cushion block 6 is equipped with on the upside of mould lower cushion block 3, be equipped with mould steel bushing 5 inside bearing shell lower cushion block 6, mould steel bushing 5 inside is provided with the semi-solid blank 14 of bearing shell, is equipped with bearing shell intermediate mass 7 on the upside of bearing shell lower cushion block 6, there is bearing shell steel bushing 12 bearing shell intermediate mass 7 inside, and bearing shell steel bushing 12 is communicated with mould steel bushing 5.
See figures.1.and.2, described pressurizing unit I comprises bearing shell stopper rod 1, and the blank being used for the extrusion casint of the semi-solid blank 14 of bearing shell to be configured as the composite bearing 19 that bush material 13 is also made up of bush material 13 and bearing shell steel bushing 12 is the most at last extruded.
With reference to Fig. 1, Fig. 2, described moving mold device III comprises cushion block 8 on bearing shell, and bearing shell is push pedal 9 on mould on the upside of cushion block 8, bearing shell is bearing shell core 11 on the downside of cushion block 8, cushion block 8 is equipped with bearing shell guide post 18 with bearing shell.
With reference to Fig. 1, Fig. 2, described mold base 2 and mould lower cushion block 3 are fixed together by the first screw 4; Bearing shell lower cushion block 6 and mould lower cushion block 3 are fixed together by the 3rd screw 15; Bearing shell intermediate mass 7 and bearing shell lower cushion block 6 are fixed together by the 4th screw 16; On bearing shell, on cushion block 8 and mould, push pedal 9 is fixed together by the 5th screw 17; On bearing shell, cushion block 8 and bearing shell core 11 are fixed together by the second screw 10.
Operation principle of the present invention is:
First, preheating is carried out to this die device; Then, ready semi-solid blank 14 is put into the mold cavity that bearing shell stopper rod 1 and mould steel bushing 5 form, and the die device III be made up of push pedal 9 on cushion block on bearing shell 8, mould and bearing shell core 11 that declines rapidly carries out matched moulds; Subsequently, promote bearing shell stopper rod 1 blank to be expressed in the die cavity that is made up of bearing shell lower cushion block 6, bearing shell intermediate mass 7, bearing shell intermediate mass 7 and bearing shell core 11 and to form bush material 13, continue pressurize until bush material 13 and bearing shell steel bushing 12 Compound cooling solidify, then rising moving mold device III carries out parting rapidly, then the blank of composite bearing 19 is stayed in fixed mold device II; Finally, the blank of composite bearing 19 ejects by rising bearing shell stopper rod 1, as shown in Figure 4, Figure 5 and Figure 6.
Claims (2)
1. the semi-solid squeeze casting mould of a composite bearing, comprise pressurizing unit I, fixed mold device II and moving mold device III three parts, it is characterized in that: wherein fixed mold device II inside is provided with the pressurizing unit I be mated together, fixed mold device II top is moving mold device III, ready semi-solid blank is put into the mold cavity that the pressurizing unit I of preheating and fixed mold device II form, and the moving mold device III that declines carries out matched moulds, promote the semi-solid squeeze casting shaping that pressurizing unit I completes bush material subsequently, rising moving mold device III carries out parting, and by rising pressurizing unit I again, the composite bearing of shaping is ejected,
Described fixed mold device II comprises mold base (2), mold base (2) upside is equipped with mould lower cushion block (3), mould lower cushion block (3) upside is equipped with bearing shell lower cushion block (6), bearing shell lower cushion block (6) inner side is equipped with mould steel bushing (5), mould steel bushing (5) inside is provided with the semi-solid blank (14) of bearing shell, bearing shell lower cushion block (6) upside is equipped with bearing shell intermediate mass (7), there is bearing shell steel bushing (12) bearing shell intermediate mass (7) inside, and bearing shell steel bushing (12) is communicated with mould steel bushing (5);
Described pressurizing unit I comprises bearing shell stopper rod (1), bearing shell stopper rod (1) and mould steel bushing (5) cooperation, be configured as bush material (13) by the extrusion casint of the semi-solid blank (14) of the bearing shell in mould steel bushing (5) and the blank of the composite bearing (19) be made up of bush material (13) and bearing shell steel bushing (12) is the most at last extruded;
Described moving mold device III comprises cushion block on bearing shell (8), on bearing shell, cushion block (8) upside is push pedal on mould (9), on bearing shell, cushion block (8) downside is bearing shell core (11), and cushion block (8) is equipped with bearing shell guide post (18) with bearing shell;
Mold base (2) and mould lower cushion block (3) are fixed together; Bearing shell lower cushion block (6) and mould lower cushion block (3) are fixed together; Bearing shell intermediate mass (7) and bearing shell lower cushion block (6) are fixed together; On bearing shell, on cushion block (8) and mould, push pedal (9) is fixed together; On bearing shell, cushion block (8) and bearing shell core (11) are fixed together.
2. the semi-solid squeeze casting mould of a kind of composite bearing according to claim 1, is characterized in that: described mold base (2) and mould lower cushion block (3) are fixed together by the first screw (4); Bearing shell lower cushion block (6) and mould lower cushion block (3) are fixed together by the 3rd screw (15); Bearing shell intermediate mass (7) and bearing shell lower cushion block (6) are fixed together by the 4th screw (16); On bearing shell, on cushion block (8) and mould, push pedal (9) is fixed together by the 5th screw (17); On bearing shell, cushion block (8) and bearing shell core (11) are fixed together by the second screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229086.5A CN103990774B (en) | 2014-05-28 | 2014-05-28 | A kind of semi-solid squeeze casting mould of composite bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229086.5A CN103990774B (en) | 2014-05-28 | 2014-05-28 | A kind of semi-solid squeeze casting mould of composite bearing |
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| CN103990774A CN103990774A (en) | 2014-08-20 |
| CN103990774B true CN103990774B (en) | 2016-01-20 |
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| CN201410229086.5A Expired - Fee Related CN103990774B (en) | 2014-05-28 | 2014-05-28 | A kind of semi-solid squeeze casting mould of composite bearing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104209493B (en) * | 2014-09-03 | 2016-05-04 | 西安交通大学 | A kind of Drawing-Core semisolid squeeze casting mould of electromagnetism of rolling bearing retainer |
| CN104475697B (en) * | 2014-11-18 | 2016-08-24 | 西安交通大学 | Chopped fiber/SiCpstrengthen the semisolid preparation technology of foamed aluminium radical bearing shell |
| CN106541084B (en) * | 2016-10-25 | 2018-09-28 | 南京工程学院 | The cast new process of sliding bearing babbit-lined metal |
| CN106608016A (en) * | 2017-01-09 | 2017-05-03 | 长春工业大学 | Preparation method of macromolecular composite material sliding bearing bush |
| CN107470583B (en) * | 2017-08-15 | 2019-06-04 | 北京交通大学 | The semi-solid rheological squeeze casting mould and casting method of high-speed rail brake disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08168866A (en) * | 1994-11-29 | 1996-07-02 | Toshiba Mach Co Ltd | Pressure pin device |
| JP2000263214A (en) * | 1999-03-17 | 2000-09-26 | Aisin Takaoka Ltd | Mold opening and closing device |
| CN102756108B (en) * | 2012-06-27 | 2014-10-15 | 西安交通大学 | Semi-solid extruding and casting molding mould of compressor crankshaft and molding process |
| CN103170519B (en) * | 2013-03-29 | 2015-05-13 | 西安交通大学 | Multi-directional hydraulic extrusion press for semi-solid metal forming |
| CN103230954B (en) * | 2013-04-16 | 2015-04-15 | 西安交通大学 | Semi-solid state metal molding multi-direction extrusion mold for refrigerator and air-conditioning compressor crankshafts |
| CN203343408U (en) * | 2013-06-07 | 2013-12-18 | 昆明理工大学 | Cylinder sleeve die for squeeze casting |
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