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Semi-solid metal slurry preparation device and method

A technology of semi-solid metal and preparation equipment, which is applied in the field of semi-solid metal slurry preparation equipment, can solve problems such as intergranular segregation, and achieve the effect of low intergranular segregation and low involvement defects

Active Publication Date: 2021-05-04
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, repeated stirring is easy to entangle the metal oxide whose surface layer is in contact with air and undergoes oxidation reaction into the metal slurry, which inevitably produces entanglement defects; and the prepared slurry has not been fine-grained and supercooled. , the problem of intergranular segregation is prone to occur in the subsequent forming process

Method used

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  • Semi-solid metal slurry preparation device and method
  • Semi-solid metal slurry preparation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-2 As shown, a semi-solid metal slurry preparation device provided by the present invention includes: a mixing tank 10, a mounting bracket, a splitter cone 9, a plurality of shear bars 8 and a driving device, and the outer wall of the mixing tank 10 passes through the first bearing 2 is connected with the mounting bracket, the first bearing 2 can withstand axial force and radial force, the mixing bucket 10 is provided with a discharge port, the splitter cone 9 is arranged in the mixing bucket 10, and each shear rod 8, one end is fixedly connected to the inner wall of the mixing tank 10, the other end of each shearing rod 8 is connected to the side wall of the splitter cone 9, and a plurality of shearing rods 8 are arranged at random in the mixing tank 10, and the bottom surface of the splitter cone 9 is connected with The liquid blocking umbrella 6, the edge of the liquid blocking umbrella 6 and the inner wall of the mixing bucket 10 leave a gap, the dr...

Embodiment 2

[0034] On the basis of Embodiment 1, in order to obtain a large enough torque, the transmission device and the driving device are further refined.

[0035] Such as figure 1 and 2 As shown, wherein, a mounting plate 3 and a bearing seat 12 are also provided between the outer wall of the mixing bucket 10 and the mounting bracket, the mounting plate 3 is fixedly connected with the mounting bracket, the mounting plate 3 is provided with a through hole, and the stirring The discharge port of the bucket 10 extends downward through the through hole, the bearing seat 12 is fixedly installed at the through hole on the upper surface of the mounting plate 3, the outer wall of the mixing bucket 10 is fixedly connected with a flange, and the flange passes through The first bearing 2 is connected with the bearing housing 12 .

[0036] Such as figure 1 and 2 As shown, wherein, the drive device includes a transmission shaft 4 and a power source, the transmission shaft 4 is connected to on...

Embodiment 3

[0039] On the basis of Embodiment 2, since the balance transmission shaft 4 will apply horizontal unilateral pressure to the mixing bucket 10 during transmission, in order to prevent the rotating mixing bucket 10 from vibrating under the unilateral pressure.

[0040] Such as figure 1 and 2 As shown, wherein, the drive device also includes a synchronous shaft 5, one end of the synchronous shaft 5 is tooth-connected to the side of the disc gear and the second gear through the third gear, and the shaft body of the synchronous shaft 5 is connected by a second bearing On the side opposite to the drive shaft 4 of the mounting bracket.

[0041]Since the synchronous shaft 5 is fixedly connected to the opposite side of the transmission shaft 4 on the mounting bracket, the synchronous shaft 5 plays a supporting role on the mixing tank 10 through the fourth gear teeth, so as to balance the impact of the transmission shaft 4 on the mixing tank 10 during transmission. The unilateral pres...

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Abstract

The invention discloses a semi-solid metal slurry preparation device and method, and belongs to the technical field of semi-solid continuous rheological metal casting equipment. Forming equipment comprises a stirring barrel, a mounting support, a sprue spreader, a plurality of shearing rods and a driving device, wherein the outer wall of the stirring barrel is connected with the mounting support through a first bearing; one end of each shearing rod is fixedly connected to the inner wall of the stirring barrel; the other end of each shearing rod is connected with the side wall of the sprue spreader; the bottom face of the sprue spreader is connected with a liquid blocking umbrella; a gap is reserved between the edge of the liquid blocking umbrella and the inner wall of the stirring barrel; and the driving device is used for driving the stirring barrel to rotate. The semi-solid metal slurry preparation device provided by the invention aims at dividing a large amount of slurry into a small amount of continuous slurry, the content of entrainment defects is effectively reduced through a prepared semi-solid slurry, and the content of intergranular segregation can be effectively reduced through the prepared semi-solid slurry in subsequent forming processing.

Description

technical field [0001] The invention relates to the technical field of semi-solid continuous rheological metal casting equipment, in particular to a semi-solid metal slurry preparation device and method. Background technique [0002] Semi-solid metal (SSM) casting technology has experienced more than 20 years of research and development. The stirring casting process is to carry out strong stirring during the solidification process of liquid metal, so that the dendrite network skeleton that is easy to form in ordinary casting is broken to form a dispersed granular structure, thereby making semi-solid molten metal, and then die-casting it into billets or castings. The products produced by this technology have the characteristics of high quality, high performance and high alloying. Compared with ordinary liquid casting, they have many obvious characteristics: the solidification shrinkage of castings is reduced, the dimensional accuracy of castings is high, the appearance quali...

Claims

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Application Information

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IPC IPC(8): B22D17/00B22D1/00
CPCB22D17/007B22D17/20B22D1/00
Inventor 张晋杨大龙白景元管仁国
Owner DALIAN JIAOTONG UNIVERSITY