CN107824752A - A kind of device for preparing metal semi-solid slurry - Google Patents

Abstract

A device for preparing metal semi-solid slurry, belonging to the technical field of metal semi-solid processing, including: a safety baffle, a rotating assembly, a processing assembly, a mounting seat, a side plate, a discharge port, a feeding funnel, a motor, and a mold clamping device , Material receiving components, the whole movement process of the device is controlled by electric control components. The invention uses the reciprocating pressure provided by the pistons on both sides to promote the repeated severe shearing of the semi-solid slurry during the transfer process between the chambers, greatly improving the effect of grain refinement, and making all the slurry participate in the chamber as much as possible Inter-transfer to ensure the uniformity of slurry treatment. The metal semi-solid slurry prepared by the preparation device of the present invention has fine grains, relatively uniform distribution and less gas content. At the same time, the preparation device is simple in structure and easy to operate, and is especially suitable for the preparation of various light alloy semi-solid slurries.

Description

A device for preparing metal semi-solid slurry

technical field

The invention discloses a preparation device for metal semi-solid slurry, which belongs to metal semi-solid processing equipment.

Background technique

Metal semi-solid forming technology is recognized as the most promising near-net forming technology for light alloys in the 21st century. Its purpose is to change the dendrite structure naturally formed in the metal liquid forming process to improve the comprehensive mechanical properties of metal parts . Metal semi-solid processing has two types of processes: thixoforming and rheoforming. However, due to three typical defects of thixoforming technology, such as high production cost, difficulty in forming complex parts, and difficult control of the production process, rheoforming Shape technology is increasingly favored by the industry. At present, the commonly used methods for preparing metal semi-solid rheological forming slurry mainly include mechanical stirring method, electromagnetic stirring method, double helix stirring method, vibration method, single roller rotation method, spray deposition method, inclined cooling plate method, rotating conveying method, etc. Tube method, turbulence effect method, liquid mixing method, etc., but because these processes are all open low-pressure processing methods, there are generally disadvantages such as insufficient slurry grain size, uneven processing quality, and easy air entrainment.

Contents of the invention

The purpose of the present invention is to provide a metal semi-solid slurry preparation device which refines the metal semi-solid slurry crystal grains and improves the slurry treatment uniformity and treatment efficiency.

The present invention is achieved through the following technical solutions.

A device for preparing metal semi-solid slurry according to the present invention, comprising: safety baffle (1), rotating assembly (2), processing assembly (3), mounting seat (4), side plate (5), fixed mold (7), mobile mold (10), mold locking assembly (15), material receiving assembly (23); safety baffle (1) is articulated through rotating assembly (2) and mounting base (4), and fixed mold (7 ) is fixed on the mounting base (4) and the side plate, the side plate and the mounting base are welded together, the movable mold (10) is connected with the side plate through the clamping assembly (15), and one end of the processing assembly (3) is fixed on On the mounting seat, one end passes through the piston A (9) and the piston B (24) to process the semi-solid slurry in the space between the fixed mold (7) and the movable mold (10). Components (23) are welded together up and down. The movement process of the whole device is controlled by electric control elements.

The rotating assembly (2) of the present invention includes: sleeve (25), fixed shaft (26), motor (13), gear A (12), gear B (14), and gear A (12) at the end of the fixed shaft , gear B (14). The fixed shaft (26) and the motor (13) are meshed together through gears, and the fixed shaft (26) and the sleeve pipe (25) are flexibly hinged together.

The material receiving assembly (23) of the present invention includes: a base (18), a material receiving trough (19), a material conveying table (20), a hydraulic cylinder E (21), and a slideway (22). The feeding table (20) is installed on the base (18) through the slideway (22), and one end of the hydraulic cylinder E (21) is fixed on the side plate of the base (18), and the other end is connected with the side of the feeding table (20) . Through the expansion and contraction of the hydraulic cylinder E (21), the transportation of slurry is realized.

The processing assembly (3) of the present invention includes: hydraulic cylinder A (11), hydraulic cylinder B (27), piston A (9), piston B (24), fixed die (7), and movable die (10) . The fixed mold (7) and the movable mold (10) are equipped with installation holes for heating elements and temperature measuring elements, and the outer layer is wrapped with thermal insulation materials. The fixed mold (7) and the movable mold (10) are closed to form two material cylinders A (28) 1. Material cylinder B (30), two material cylinders are connected by a thin tube (29) in the middle, hydraulic cylinder A (11) and hydraulic cylinder B (27) are symmetrically arranged left and right, and the hydraulic cylinder pushes the piston to move left and right in the material cylinder, so that The semi-solid metal slurry is completely reciprocatingly transferred between the material cylinder A (28) and the material cylinder B (30) through the narrow tube (29). crystal grains.

The clamping device (15) of the present invention is composed of a hydraulic cylinder C (16) and a hydraulic cylinder D (17). At the same time, the expansion and contraction of the hydraulic cylinder drives the movable mold (10) to move to realize the process of mold opening and mold locking.

The material of the fixed mold (7) and the movable mold (10) according to the present invention is H13 steel, with heating elements and temperature measuring elements buried inside, the outer layer is wrapped with thermal insulation material, and positioning pins (31) and positioning pins are provided on the mold closing surface. Holes to ensure accurate alignment during mold closing.

The working process of the semi-solid metal slurry preparation device of the present invention is divided into a treatment process and a discharge process.

Processing process: First, start the heating device in the mold closing state to heat the fixed mold (7) and the movable mold (10) to the preset temperature and keep them warm through the temperature control element. Control the motor (13) to open the safety baffle (1), check whether the movable mold and the fixed mold are tightly fitted, and after the joint is tight, control the hydraulic cylinder A (11) and hydraulic cylinder B (27) to make the piston A (9) Piston B (24) is moved to the leftmost side of material cylinder A (28) and material cylinder B (30) respectively, and the smelted metal liquid passes through the feed when the temperature of the smelted metal is 30-50°C above the liquidus temperature Funnel (8) pours in the material cylinder A (28). Immediately hydraulic cylinder A (11) moves piston A (9) to the right. At this time, hydraulic cylinder B (27) is in the state of pressure relief, and piston B (24) moves to the right under the thrust of the molten metal. When the left piston When A (9) moves to the rightmost edge of the material cylinder A (28), the molten metal is almost completely pushed to the material cylinder B (30), and the right hydraulic cylinder B (27) then pushes the metal through the piston B (24). The liquid flows back to the material cylinder A (28), and about 5-10 rounds of such a reciprocating cycle have just made the metal semi-solid slurry. The entire movement process of the hydraulic cylinder is controlled by electronic control components. The metal semi-solid slurry produced by such reciprocating severe shearing has finer grains, more uniform structure and less gas content.

Unloading process: Put the material receiving trough (19) on the material conveying platform (20), and the hydraulic cylinder E (21) moves the material receiving trough (19) to the material receiving position. Once the metal semi-solid slurry is processed, the motor (13) immediately turns the safety baffle (1) to the vertical downward position (as shown in Figure 5) to prevent the slurry from splashing and hurting people during the unloading process. At the same time, the hydraulic cylinder C (16). The hydraulic cylinder D (17) moves the movable mold (10) away, and the slurry flows into the receiving tank (19) through the discharge port (6). After the unloading is completed, the electric motor (13) raises the safety baffle, and the hydraulic cylinder E (21) sends out the metal semi-solid slurry for subsequent use.

Beneficial effects of the present invention.

(1) The reciprocating pressure provided by the pistons on both sides of the device promotes repeated severe shearing of the semi-solid slurry during the transfer process between chambers, which greatly improves the effect of grain refinement.

(2) When the device prepares metal semi-solid slurry, almost all the slurry participates in the transfer between chambers, which ensures the uniformity of slurry treatment.

(3) The preparation process of this device is carried out in a relatively closed chamber, which is not easy to entrain air, and the slurry has less air content.

(4) The structure of the device is simple, and the whole action can be electronically controlled to realize the automation of the process, including the automatic transfer of the slurry and the control of the safety baffle.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the device.

Figure 2 is a schematic diagram of the receiving assembly.

Figure 3 is a schematic diagram of the upper assembly.

Figure 4 is a schematic diagram of the working state of the device.

Figure 5 is a schematic diagram of the unloading state.

The serial numbers in the diagram: 1 is the safety baffle; 2 is the rotating component; 3 is the processing component; 4 is the mounting seat; 5 is the side plate; 6 is the discharge port; Piston A; 10 is a moving mold; 11 is a hydraulic cylinder A; 12 is a gear A, 14 is a gear B; 13 is a motor; 15 is a clamping device; 16 is a hydraulic cylinder C; 17 is a hydraulic cylinder D; 18 is a base; 19 is a receiving tank; 20 is a feeding table; 21 is a hydraulic cylinder E; 22 is a slideway; 23 is a receiving assembly; 24 is a piston B; 25 is a casing; 26 is a fixed shaft; 27 is a hydraulic cylinder B; 28 is a material cylinder A; 29 is a thin tube; 30 is a material cylinder B; 31 is a positioning pin; 32 is a heating and temperature measuring element hole.

Detailed ways

The present invention will be further described through the following embodiments in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the metal semi-solid slurry preparation device provided by the present invention includes: a safety baffle 1, a rotating assembly 2, a processing assembly 3, a mounting seat 4, a side plate 5, a fixed mold 7, a moving Mold 10, clamping device 15, material receiving assembly 23. The whole movement process of the device is controlled by electric control elements.

The processing assembly 3 is mainly composed of a hydraulic cylinder A11, a hydraulic cylinder B27, a piston A9, a piston B24, a fixed die 7 and a movable die 10. The fixed mold 7 and the movable mold 10 are equipped with installation holes for heating and temperature measuring elements, and the outer layer is wrapped with thermal insulation materials. The heating device heats the fixed mold 7 and the movable mold 10, and the temperature of the device during processing is kept at the same temperature as the temperature control element. The temperature required by the process is consistent. The fixed mold 7 and the movable mold 10 are closed to form two material cylinders A28 and B30. The middle of the two material cylinders is connected by a thin tube 29. The hydraulic cylinder A11 and the hydraulic cylinder B27 are symmetrically arranged on the left and right. The hydraulic cylinder pushes the piston to the left and right in the material cylinder Move, so that the semi-solid metal slurry is completely reciprocatingly transferred between the material cylinder A28 and the material cylinder B30 through the thin tube 29. During the reciprocating transfer process, the metal slurry is subjected to severe shearing to refine the grains.

The rotating assembly 2 includes: a sleeve 25, a fixed shaft 26, a motor 13, a gear A12, a gear B14, and a gear A12 and a gear B14 at the end of the fixed shaft. The fixed shaft 26 and the motor 13 are meshed together through gears, and the fixed shaft 26 and the sleeve pipe 25 are articulated together.

The material receiving assembly 23 includes: a base 18 , a material receiving trough 19 , a material conveying platform 20 , a hydraulic cylinder E21 , and a slideway 22 . The feeding table 20 is installed on the base 18 through the slideway 22 , and one end of the hydraulic cylinder E21 is fixed on the side plate of the base, and the other end is connected with the side of the feeding table 20 . Through the expansion and contraction of the hydraulic cylinder, the transportation of slurry is realized.

The mold clamping device 15 is composed of a hydraulic drive cylinder C16 and a hydraulic cylinder D17. The two ends of the hydraulic cylinder are respectively connected to the side plate and the movable mold 10. The expansion and contraction of the hydraulic cylinder drives the movable mold to move to realize mold opening and mold locking. process.

The working process of the semi-solid metal slurry preparation device is divided into a treatment process and a discharge process.

Processing process: First, start the heating device in the mold closing state to heat the fixed mold 7 and the movable mold 10 to the preset temperature and keep them warm through the temperature control element. Control the motor 13 to open the safety baffle 1, check whether the movable mold and the fixed mold are tightly bonded, and after they are tightly bonded, control the hydraulic cylinder A11 and hydraulic cylinder B27 to move the piston A9 and piston B24 to the material cylinder A28, On the leftmost side of the material cylinder B30, the smelted metal liquid is poured into the material cylinder A28 through the feed funnel 8 when the temperature of the smelted metal is 30-50° C. above the liquidus temperature. Then the hydraulic cylinder A11 moves the piston A9 to the right. At this time, the hydraulic cylinder B27 is in the pressure relief state, and the piston B24 moves to the right under the thrust of the molten metal. When the left piston A9 moves to the rightmost edge of the material cylinder A28, The molten metal is almost completely pushed to the material cylinder B30, and the right hydraulic cylinder B27 then pushes the metal liquid back to the material cylinder A28 through the piston B24. This reciprocating cycle is about 5-10 rounds, and the metal semi-solid slurry is made. The entire movement process of the hydraulic cylinder is controlled by electronic control components. The metal semi-solid slurry produced by such reciprocating severe shearing has finer grains, more uniform structure and less gas content.

Unloading process: put the material receiving chute 19 on the material conveying table 20, and the hydraulic cylinder E21 will move the material receiving chute 19 to the material receiving position. Once the metal semi-solid slurry is processed, the motor 13 will immediately turn the safety baffle 1 to the vertical downward position as shown in Figure 5 to prevent the slurry from splashing and hurting people during the unloading process. At the same time, the hydraulic cylinder C16 and hydraulic cylinder D17 will move The mold 10 is removed, and the slurry flows into the receiving tank 19 through the discharge port 6 . After the unloading is completed, the motor 13 raises the safety baffle, and the hydraulic cylinder E21 sends out the metal semi-solid slurry for subsequent use.

Claims (1)

1. one kind prepares metal semi-solid slurry device, it is characterized in that including safety screen（1）, runner assembly（2）, processing assembly （3）, mounting seat（4）, side plate（5）, stent（7）, mobile mould（10）, locked mode component（15）, splicing component（23）；Safety screen （1）Pass through runner assembly（2）With mounting seat（4）It is movably hinged, stent（7）It is fixed on mounting seat（4）On side plate, side plate with Mounting seat welds together, mobile mould（10）Pass through locked mode component（15）It is linked together with side plate, processing assembly（3）One end is consolidated It is scheduled in mounting seat, one end passes through piston A（9）, piston B（24）In stent（7）With mobile mould（10）Between space in enter The processing of row semi solid slurry, mounting seat（4）With splicing component（23）Weld together up and down, the motion process of whole device by Electric control element controls；

The runner assembly（2）Including：Sleeve pipe（25）, fixing axle（26）, motor（13）, gear A（12）, gear B（14）, it is solid Dead axle end is equipped with gear A（12）, gear B（14）；Fixing axle（26）With motor（13）Meshed together by gear, it is fixed Axle（26）With sleeve pipe（25）It is movably hinged；

Described splicing component（23）Including：Base（18）, splicing groove（19）, conveying platform（20）, hydraulic cylinder E（21）, slideway （22）；Conveying platform（20）Pass through slideway（22）Installed in base（18）On, hydraulic cylinder E（21）One end is fixed on base（18）Side On plate, the other end and conveying platform（20）Side connection, pass through hydraulic cylinder E（21）It is flexible, realize the conveying of slurry；

Described processing assembly（3）Including：Hydraulic cylinder A（11）, hydraulic cylinder B（27）, piston A（9）, piston B（24）, stent （7）, mobile mould（10）Composition；Stent（7）With mobile mould（10）It is interior to be provided with heating element heater and temperature element mounting hole, outer layer bag Wrap up in insulation material, stent（7）With mobile mould（10）Closure forms two material cylinder A（28）, material cylinder B（30）, among two material cylinders Pass through tubule（29）Connection, hydraulic cylinder A（11）With hydraulic cylinder B（27）It is symmetrically arranged, Hydraulic Cylinder piston is in material cylinder Move left and right, make semi-solid metal slurry in material cylinder A（28）, material cylinder B（30）Between pass through tubule（29）Complete reciprocating transfer, In shuttle transfer process metal paste by violent shear action so as to crystal grain thinning；

Described clamping apparatus（15）It is by hydraulic cylinder C（16）, hydraulic cylinder D（17）Composition, the both ends of two hydraulic cylinders respectively with Side plate（5）With mobile mould（10）It is linked together, the flexible drive movement mould of hydraulic cylinder（10）It is mobile, realize die sinking and locked mode mistake Journey；

Described stent（7）With mobile mould（10）Inside is embedded with heating element heater and temperature element, outer layer covers insulation material, Land area is provided with alignment pin（31）And positioning hole.