CN102756108A - Semi-solid extruding and casting molding mould and molding process of compressor crankshaft and - Google Patents
Semi-solid extruding and casting molding mould and molding process of compressor crankshaft and Download PDFInfo
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- CN102756108A CN102756108A CN2012102132114A CN201210213211A CN102756108A CN 102756108 A CN102756108 A CN 102756108A CN 2012102132114 A CN2012102132114 A CN 2012102132114A CN 201210213211 A CN201210213211 A CN 201210213211A CN 102756108 A CN102756108 A CN 102756108A
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Abstract
The invention provides a semi-solid extruding and casting molding mould and molding process of a compressor crankshaft. The mould comprises an upper mould and a lower mould, wherein a closed space is formed by carrying out die assembly on the upper mould and the lower mould and serves as a cavity of a extruding and casting piece of the compressor crankshaft; a puncher pin passes through a hole at the center of the lower mould to enter the cavity; a template of the upper mould is fixedly connected with a lug boss part at the top of the upper mould through a pressing rod; the top of a mould core is fixedly connected to the template of the upper mould through a thread; a piston rod passes through the center of the template of the upper mould; the flange end at the lower part of the piston rod is in threaded connection with a pressurizing plate to drive the pressurizing plate to move in the space of a groove at the upper part of the upper mould; the bottom face of the pressurizing plate is connected with an annular lug boss; and the mould core passes through a middle hole of the annular lug boss and is inserted into the top of the mould cavity. In the molding process, semi-solid slurry is adopted to fill the mould, a casting temperature is low, and a mould filling process is gentle; and an extruding and casting method is adopted for molding. Therefore, the molding mould and the molding process have the advantages that the material utilization rate is high, the service life of the molding mould is long, tissues of a molded piece are dense, and the production efficiency is high.
Description
Technical field
The invention belongs to compressor crank shaft forming technique field, be specifically related to a kind of compressor crank shaft semisolid extrusion casint shaping dies and forming technology.
Background technology
The way of metal mold gravity casting is mainly adopted in compressor crank shaft production at present, because bigger running and feeding system is arranged, stock utilization is low, and percent defective is high, and the processing capacity of foundry goods is big, and production efficiency is low.
Semi-solid state forming technique originates from the seventies in 20th century, and experience has got into the industrial applications stage at present from basic research, technological development, equipment development.Compare with the liquid metal casting, semi-solid-state metal has the spherical nascent solid phase of certain volume mark, and the Semi-Solid Metals Forming part is fine and close, mechanical property is high, machining amount is few, die life is long; Forge with solid metallic and to compare, semi-solid-state metal contains the liquid phase of certain volume mark, and the Semi-Solid Metals Forming part is complicated, be easy to near-net-shape, machining amount is few, so semi-solid state forming technique research and use and cause the great attention of countries in the world.
Semi-solid-state shaping has constituted a process systems that has his own strong points, complements each other with extrusion casint, can make full use of the advantage of external pressure, accomplishes to solidify feeding, eliminates various defectives, obtain geomery each one, the different product of performance requirement.
Also do not see at present the relevant report that semi-solid state forming technique is applied to the compressor crank shaft production field.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The objective of the invention is to propose a kind of compressor crank shaft semisolid extrusion casint shaping dies and forming technology, have stock utilization height, shaping dies life-span length, drip molding dense structure, advantage of high production efficiency.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of compressor crank shaft semisolid extrusion casint shaping dies comprises patrix 6 and counterdie 8, and patrix 6 is separately fixed on the upper and lower die holder of extrusion casting machine with counterdie 8; It is the die cavity of compressor crank shaft extrusion casint part 7 that patrix 6 forms enclosure space with counterdie 8 matched moulds, and the center is for dividing flow cone in the die cavity, and the hole that drift 10 passes counterdie 8 centres gets into die cavity; Patrix template 4 is fixedly connected through the boss position at depression bar 2 and patrix 6 tops; The top of core 3 is fixed on through being threaded on the patrix template 4, and piston rod 1 passes the center of patrix template 4, and the flange end of piston rod 1 bottom is threaded with increased pressure board 5; It is movable in the recess space on patrix 6 tops to drive increased pressure board 5; Increased pressure board 5 bottom surfaces are connected with annular boss, and core 3 passes the interstitial hole of annular boss, and insert the top of mold cavity.
A kind of compressor crank shaft semisolid extrusion casint forming technology may further comprise the steps:
The first step, raw metal casting pig or spheroidal graphite cast-iron that compressor crank shaft is required melt;
In second step, it is the semi solid slurry between 0.3 ~ 0.5 that casting pig or spheroidal graphite cast-iron after the fusing are processed fraction solid;
The 3rd step; The barrel of compressor crank shaft shaping dies and extrusion casting apparatus is preheating to 300 ~ 400 ℃; And with patrix 6, counterdie 8 matched moulds of compressor crank shaft shaping dies, the position of the increased pressure board 5 of adjustment shaping dies makes the boss above the increased pressure board 5 withstand on the top of mold cavity;
The 4th step, semi solid slurry is poured in the barrel of extrusion casint former, maybe the semi solid slurry for preparing is solidified, carrying out secondary remelting and controlling the semi solid slurry fraction solid is to pour in the barrel of extrusion casint former after between 0.3 ~ 0.5;
In the 5th step, adjustment pressure head 10 carries out filling with the semi solid slurry in the speed promotion extrusion casint former barrel of 0.05 ~ 0.25m/s to die cavity;
In the 6th step, pressure head 10 continued to apply 80 ~ 100Mp pressure after filling was accomplished, and semi solid slurry is carried out pressurize 10 ~ 25s, simultaneously increased pressure board 5 was applied 80 ~ 100Mp pressure, and pressurize 10 ~ 25s, and the elongated the tip of the axis of compressor crank shaft is solidified under pressure;
The 7th step; After pressurize finished, patrix 6 is up motion under the effect of depression bar 2, opens in 8 minutes with counterdie; When patrix 6 rises; Increased pressure board 5 is also done and is synchronized with the movement, and when patrix 6 moved to the height that is higher than automatic modeling crankshaft casting, piston rod 1 drove increased pressure board 5 and moves downward the demoulding that realizes compressor crank shaft foundry goods 7;
In the 8th step, the cast gate and the runner of compressor crank shaft foundry goods 7 cut, and obtain plural compressor crank shaft spare through machined, heat treatment.
The present invention has the following advantages:
1, utilize semisolid Extrution casting technique shaping bent axle liquid forging can realize near-net-shape, the mechanical property of foundry goods is good, and allowance is few, and the shrinkage porosite shrinkage cavity defect is few, and yield rate is high.Forming temperature is low in addition, and forming process very semi solid slurry flow is laminar condition, and little to the metal die impact, improve die life.
2, bent axle semisolid squeeze casting mould can be realized the pressurization at slender axles position has been reduced plastic force, and the defective of foundry goods is significantly reduced.This mould adopts indirect liquid to be swaged into shape, can realize that one-mold multiple-member is shaped, and production efficiency is high.
Description of drawings
Accompanying drawing partly cuts open figure for shaping dies of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done detailed description.
With reference to accompanying drawing, a kind of compressor crank shaft semisolid extrusion casint shaping dies comprises patrix 6 and counterdie 8; Patrix 6 is separately fixed on the upper and lower die holder of extrusion casting machine with counterdie 8, and it is the die cavity of compressor crank shaft extrusion casint part 7 that patrix 6 forms enclosure space with counterdie 8 matched moulds, and the center is for dividing flow cone in the die cavity; Semi solid slurry is assigned in the circumferential distribution compressor crank shaft spare die cavity, and the hole that the compressor crank shaft more than 2 of can being used for being shaped, drift 10 pass counterdie 8 centres gets into die cavity; Slurry on the extrusion casint former barrel is pushed die cavity, and after filling is accomplished, carry out pressurize, form compressor crank shaft extrusion casint part 7; Patrix template 4 is fixedly connected through the boss position at depression bar 2 and patrix 6 tops, plays the effect of locking mould and peel of mould, and the top of core 3 is fixed on the patrix template 4 through being threaded; Piston rod 1 passes the center of patrix template 4; The flange end of piston rod 1 bottom is threaded with increased pressure board 5, and it is movable in the recess space on patrix 6 tops to drive increased pressure board 5, and increased pressure board 5 bottom surfaces are connected with annular boss; When being shaped; Piston rod 1 can drive the terminal extruding of 5 pairs of compressor crank shaft slender axles of increased pressure board, and can when the demoulding of compressor crank shaft foundry goods, play the effect that ejects foundry goods, and core 3 passes the interstitial hole of annular boss; And the top of inserting mold cavity, be used for forming the hole above the bent axle.
A kind of compressor crank shaft semisolid extrusion casint forming technology may further comprise the steps:
The first step, raw metal casting pig or spheroidal graphite cast-iron that compressor crank shaft is required melt;
In second step, it is the semi solid slurry between 0.3 ~ 0.5 that casting pig or spheroidal graphite cast-iron after the fusing are processed fraction solid;
The 3rd step; The barrel of compressor crank shaft shaping dies and extrusion casting apparatus is preheating to 300 ~ 400 ℃; And with patrix 6, counterdie 8 matched moulds of extrusion casint former shaping dies, the position of the increased pressure board 5 of adjustment shaping dies makes the boss above the increased pressure board 5 withstand on the top of mold cavity;
The 4th step, semi solid slurry is poured in the barrel of extrusion casint former, maybe the semi solid slurry for preparing is solidified; Carrying out secondary remelting and controlling the semi solid slurry fraction solid is to pour in the barrel of extrusion casint former after between 0.3 ~ 0.5, and the control of slurry semisolid fraction solid is a very crucial parameter of semi-solid-state shaping, and fraction solid is too low; Then the slurry initial viscosity is very big; And solidify very soon, can't accomplish filling, fraction solid is too high; Organizing after then being shaped is thick, spherical bad;
In the 5th step, adjustment pressure head 10 carries out filling with the semi-solid-state metal liquid in the speed promotion extrusion casint former barrel of 0.05 ~ 0.25m/s to die cavity, and the selection of pressure head 10 speed is very crucial parameters; The pressure head excessive velocities will cause semi solid slurry that splash and turbulent flow take place in flow process, and foundry goods will be rolled up gas; Defective such as be mingled with; Pressure head speed is too slow, and then semi solid slurry solidifies, and can't filling accomplish;
In the 6th step, the effect of pressure is that workpiece is carried out feeding, eliminates casting defect, and the size of dwell pressure depends on factors such as the size, shape, height of kind and the character and the foundry goods of material; Compressor crank shaft belongs to longaxones parts, and ratio of height to diameter is big, and in extrusion casint, metal liquid stream is when this is regional; The pressure loss is very big, can't fine feeding, thus be easy to produce defective, if make this section feeding by strengthening ram pressures; The pressure of pressure head will be very big, can add the input of large equipment, through add the way of increased pressure board in longitudinal end, and can be so that the longitudinal end of bent axle obtains feeding; Can also reduce the pressure of pressure head, semi solid slurry has been filled after the mold cavity, according to the production equipment situation; Begin pressurization as early as possible, pressure head 10 continued to apply 80 ~ 100Mp pressure after filling was accomplished, and semi solid slurry is carried out pressurize 10 ~ 25s; Simultaneously increased pressure board 5 is applied 80 ~ 100Mp pressure, and pressurize 10 ~ 25s, the elongated the tip of the axis of compressor crank shaft is solidified under pressure;
The 7th step; After pressurize finished, patrix 6 is up motion under the effect of depression bar 2, opens in 8 minutes with counterdie; When patrix 6 rises; Increased pressure board 5 is also done and is synchronized with the movement, and when patrix 6 moved to the height that is higher than automatic modeling crankshaft casting, piston rod 1 drove increased pressure board 5 and moves downward the demoulding that realizes compressor crank shaft foundry goods 7;
In the 8th step, the cast gate and the runner of compressor crank shaft foundry goods 7 cut, and obtain plural compressor crank shaft spare through machined, heat treatment.
Claims (2)
1. compressor crank shaft semisolid extrusion casint shaping dies; Comprise patrix (6) and counterdie (8), it is characterized in that: patrix (6) and counterdie (8) are separately fixed on the upper and lower die holder of extrusion casting machine, and it is the die cavity of compressor crank shaft extrusion casint part (7) that patrix (6) and counterdie (8) matched moulds form enclosure space; The center is for dividing flow cone in the die cavity; The hole that drift (10) passes counterdie (8) centre gets into die cavity, and patrix template (4) is fixedly connected through the boss position at depression bar (2) and patrix (6) top, and the top of core (3) is fixed on through being threaded on the patrix template (4); Piston rod (1) passes the center of patrix template (4); The flange end of piston rod (1) bottom is threaded with increased pressure board (5), and it is movable in the recess space on patrix (6) top to drive increased pressure board (5), and increased pressure board (5) bottom surface is connected with annular boss; Core (3) passes the interstitial hole of annular boss, and inserts the top of mold cavity.
2. a compressor crank shaft semisolid extrusion casint forming technology is characterized in that, may further comprise the steps:
The first step, raw metal casting pig or spheroidal graphite cast-iron that compressor crank shaft is required melt;
In second step, it is the semi solid slurry between 0.3 ~ 0.5 that casting pig or spheroidal graphite cast-iron after the fusing are processed fraction solid;
The 3rd step; The barrel of compressor crank shaft shaping dies and extrusion casting apparatus is preheating to 300 ~ 400 ° of C; And with patrix (6), counterdie (8) matched moulds of compressor crank shaft shaping dies, the position of the increased pressure board (5) of adjustment shaping dies makes the boss above the increased pressure board 5 withstand on the top of mold cavity;
The 4th step, semi solid slurry is poured in the barrel of extrusion casint former, maybe the semi solid slurry for preparing is solidified, carrying out secondary remelting and controlling the semi solid slurry fraction solid is to pour in the barrel of extrusion casint former after between 0.3 ~ 0.5;
In the 5th step, adjustment pressure head (10) carries out filling with the semi solid slurry in the speed promotion extrusion casint former barrel of 0.05 ~ 0.25m/s to die cavity;
The 6th step; Pressure head (10) continued to apply 80 ~ 100Mp pressure after filling was accomplished, and semi solid slurry is carried out pressurize 10 ~ 25s, simultaneously increased pressure board (5) was applied 80 ~ 100Mp pressure; And pressurize 10 ~ 25s, the elongated the tip of the axis of compressor crank shaft is solidified under pressure;
The 7th step; After pressurize finished, patrix (6) is up motion under the effect of depression bar (2), separates with counterdie (8); When patrix (6) rises; Increased pressure board (5) is also done and is synchronized with the movement, and when patrix (6) moved to the height that is higher than automatic modeling crankshaft casting, piston rod (1) drove increased pressure board (5) and moves downward the demoulding that realizes compressor crank shaft foundry goods (7);
In the 8th step, the cast gate and the runner of compressor crank shaft foundry goods (7) cut, and obtain plural compressor crank shaft spare through machined, heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210213211.4A CN102756108B (en) | 2012-06-27 | 2012-06-27 | Semi-solid extruding and casting molding mould of compressor crankshaft and molding process |
Applications Claiming Priority (1)
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| CN201210213211.4A CN102756108B (en) | 2012-06-27 | 2012-06-27 | Semi-solid extruding and casting molding mould of compressor crankshaft and molding process |
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| Publication Number | Publication Date |
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| CN102756108A true CN102756108A (en) | 2012-10-31 |
| CN102756108B CN102756108B (en) | 2014-10-15 |
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| CN201210213211.4A Expired - Fee Related CN102756108B (en) | 2012-06-27 | 2012-06-27 | Semi-solid extruding and casting molding mould of compressor crankshaft and molding process |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230954A (en) * | 2013-04-16 | 2013-08-07 | 西安交通大学 | Semi-solid state metal molding multi-direction extrusion mold for refrigerator and air-conditioning compressor crankshafts |
| CN103990774A (en) * | 2014-05-28 | 2014-08-20 | 西安交通大学 | Semi-solid squeeze casting mould for composite bearing bush |
| CN104209493A (en) * | 2014-09-03 | 2014-12-17 | 西安交通大学 | Electromagnetic core-pulling type semisolid squeeze casting die for rolling bearing retainer |
| CN104525890A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Semisolid manufacturing process of opposite roller spinning strain induction method of submarine ring rib cylindrical shell |
| CN104624917A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Process for manufacturing semisolid copper alloy multi-channel valve body through radial forging strain provocation method |
| CN104668911A (en) * | 2015-02-06 | 2015-06-03 | 西安交通大学 | Radial forging type strain-induced semi-solid extrusion process for outer cylinder forged piece of aircraft landing gear |
| CN104723031A (en) * | 2015-02-06 | 2015-06-24 | 西安交通大学 | Radial-forging type strain induction semi-solid state extrusion technology for waveguide tube |
| CN104985159A (en) * | 2015-07-03 | 2015-10-21 | 洛阳西格马炉业股份有限公司 | Pressure casting device and method for producing high-melting-point metal-coated potsherd material |
| CN108176838A (en) * | 2017-12-28 | 2018-06-19 | 银峰铸造（芜湖）有限公司 | Improve the casting technique and casting mould of casting shrinkage cavity shrinkage porosity |
| CN108237210A (en) * | 2016-12-26 | 2018-07-03 | 北京有色金属研究总院 | A kind of high tough aluminium alloy automobile connector Semi-solid Thixo-Casting method |
| CN108339959A (en) * | 2016-12-27 | 2018-07-31 | 李永宏 | A kind of shaft sleeve parts shaping dies |
| CN109365780A (en) * | 2018-12-06 | 2019-02-22 | 昆明理工大学 | A kind of preparation of Model For The Bush-axle Type Parts semi solid slurry and the integrated device of extrusion casint |
| CN109628734A (en) * | 2019-01-08 | 2019-04-16 | 长沙威尔保新材料有限公司 | A kind of fire grate bar for sintering pallet |
| CN111518978A (en) * | 2020-05-29 | 2020-08-11 | 芜湖市容川机电科技股份有限公司 | Preparation method of nodular cast iron pouring cup |
| CN113102729A (en) * | 2021-03-09 | 2021-07-13 | 清华大学 | Double-extrusion punch for extrusion casting process of large complex casting |
| CN114619012A (en) * | 2022-03-09 | 2022-06-14 | 南昌航空大学 | Method and device for direct rheological extrusion casting forming |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103230954A (en) * | 2013-04-16 | 2013-08-07 | 西安交通大学 | Semi-solid state metal molding multi-direction extrusion mold for refrigerator and air-conditioning compressor crankshafts |
| CN103990774A (en) * | 2014-05-28 | 2014-08-20 | 西安交通大学 | Semi-solid squeeze casting mould for composite bearing bush |
| 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 |
| CN104209493A (en) * | 2014-09-03 | 2014-12-17 | 西安交通大学 | Electromagnetic core-pulling type semisolid squeeze casting die for rolling bearing retainer |
| CN104525890A (en) * | 2014-12-26 | 2015-04-22 | 西安交通大学 | Semisolid manufacturing process of opposite roller spinning strain induction method of submarine ring rib cylindrical shell |
| CN104624917A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Process for manufacturing semisolid copper alloy multi-channel valve body through radial forging strain provocation method |
| CN104624917B (en) * | 2014-12-26 | 2017-02-01 | 西安交通大学 | Process for manufacturing semisolid copper alloy multi-channel valve body through radial forging strain provocation method |
| CN104668911B (en) * | 2015-02-06 | 2017-04-19 | 西安交通大学 | Radial forging type strain-induced semi-solid extrusion process for outer cylinder forged piece of aircraft landing gear |
| CN104723031B (en) * | 2015-02-06 | 2017-01-18 | 西安交通大学 | Radial-forging type strain induction semi-solid state extrusion technology for waveguide tube |
| CN104723031A (en) * | 2015-02-06 | 2015-06-24 | 西安交通大学 | Radial-forging type strain induction semi-solid state extrusion technology for waveguide tube |
| CN104668911A (en) * | 2015-02-06 | 2015-06-03 | 西安交通大学 | Radial forging type strain-induced semi-solid extrusion process for outer cylinder forged piece of aircraft landing gear |
| CN104985159A (en) * | 2015-07-03 | 2015-10-21 | 洛阳西格马炉业股份有限公司 | Pressure casting device and method for producing high-melting-point metal-coated potsherd material |
| CN108237210A (en) * | 2016-12-26 | 2018-07-03 | 北京有色金属研究总院 | A kind of high tough aluminium alloy automobile connector Semi-solid Thixo-Casting method |
| CN108339959A (en) * | 2016-12-27 | 2018-07-31 | 李永宏 | A kind of shaft sleeve parts shaping dies |
| CN108176838A (en) * | 2017-12-28 | 2018-06-19 | 银峰铸造（芜湖）有限公司 | Improve the casting technique and casting mould of casting shrinkage cavity shrinkage porosity |
| CN109365780A (en) * | 2018-12-06 | 2019-02-22 | 昆明理工大学 | A kind of preparation of Model For The Bush-axle Type Parts semi solid slurry and the integrated device of extrusion casint |
| CN109365780B (en) * | 2018-12-06 | 2020-09-22 | 昆明理工大学 | Device for integrating semi-solid slurry preparation and extrusion casting of shaft sleeve parts |
| CN109628734A (en) * | 2019-01-08 | 2019-04-16 | 长沙威尔保新材料有限公司 | A kind of fire grate bar for sintering pallet |
| WO2020143108A1 (en) * | 2019-01-08 | 2020-07-16 | 长沙威尔保新材料有限公司 | Grate bar for pallet car of sintering machine |
| CN111518978A (en) * | 2020-05-29 | 2020-08-11 | 芜湖市容川机电科技股份有限公司 | Preparation method of nodular cast iron pouring cup |
| CN111518978B (en) * | 2020-05-29 | 2022-05-27 | 芜湖市容川机电科技股份有限公司 | Preparation method of nodular cast iron pouring cup |
| CN113102729A (en) * | 2021-03-09 | 2021-07-13 | 清华大学 | Double-extrusion punch for extrusion casting process of large complex casting |
| CN114619012A (en) * | 2022-03-09 | 2022-06-14 | 南昌航空大学 | Method and device for direct rheological extrusion casting forming |
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