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Flow-following semi-solid forming method and device

A semi-solid forming and following technology, applied in the field of semi-solid processing of metal materials and semi-solid squeeze casting, can solve the problems of high cost and low production efficiency, and achieve the effect of cost reduction, high preparation efficiency and excellent comprehensive performance.

Inactive Publication Date: 2020-05-15
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of step-by-step preparation and forming of semi-solid melt in the existing semi-solid forming technology, which brings about the problems of oxidized gas, low production efficiency and high cost, a semi-solid forming method with flow and its device are proposed

Method used

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  • Flow-following semi-solid forming method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A flowing semi-solid forming device, comprising: a barrel 1, a pressure head 3, a flow channel 7 and a temperature control system 10;

[0045] The barrel 1 is a barrel-shaped cavity, and one end of the barrel 1 is connected with the mould,

[0046]The pressure head 3 is a cylinder, the diameter of the pressure head 3 is 0.2-1.0 mm smaller than the inner diameter of the barrel 1, and the length is 85 mm. One end of the pressure head 3 is connected with the piston rod of the pressurizing cylinder 4 through a connecting rod, and the pressure The other end of the head 3 extends into the barrel 1 and can move freely in the barrel 1,

[0047] One end of the flow channel 7 communicates with the barrel 1, and forms an included angle of 22° with the axis of the barrel 1, and the other end of the flow channel 7 communicates with the mold cavity 5,

[0048] The temperature control system 10 includes: a heating element 9 and its temperature control instrument. The temperature cont...

Embodiment 2

[0058] A flowing semi-solid forming device, comprising: a barrel 1, a pressure head 3, a flow channel 7 and a temperature control system 10;

[0059] The barrel 1 is a barrel-shaped cavity, and one end of the barrel 1 is connected with the mould,

[0060] The pressure head 3 is a cylinder, the diameter of the pressure head 3 is 0.2-1.0 mm smaller than the inner diameter of the barrel 1, and the length is 85 mm. One end of the pressure head 3 is connected with the piston rod of the pressurizing cylinder 4 through a connecting rod, and the pressure The other end of the head 3 extends into the barrel 1 and can move freely in the barrel 1,

[0061] One end of the flow channel 7 communicates with the barrel 1, and forms an included angle of 22° with the axis of the barrel 1, and the other end of the flow channel 7 communicates with the mold cavity 5,

[0062] The temperature control system 10 includes: a heating element 9 and its temperature control instrument. The temperature con...

Embodiment 3

[0072] A flowing semi-solid forming device, comprising: a barrel 1, a pressure head 3, a flow channel 7 and a temperature control system 10;

[0073] The barrel 1 is a barrel-shaped cavity, and one end of the barrel 1 is connected with the mould,

[0074] The pressure head 3 is a cylinder, the diameter of the pressure head 3 is 0.2-1.0 mm smaller than the inner diameter of the barrel 1, and the length is 85 mm. One end of the pressure head 3 is connected with the piston rod of the pressurizing cylinder 4 through a connecting rod, and the pressure The other end of the head 3 extends into the barrel 1 and can move freely in the barrel 1,

[0075] One end of the flow channel 7 communicates with the barrel 1, and forms an included angle of 22° with the axis of the barrel 1, and the other end of the flow channel 7 communicates with the mold cavity 5,

[0076] The temperature control system 10 includes: a heating element 9 and its temperature control instrument. The temperature con...

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Abstract

The invention discloses a flow-following semi-solid forming device. The device comprises a charging barrel, a pressure head, a flow passage and a temperature control system, wherein the charging barrel is a barrel-shaped cavity; one end of the charging barrel is connected with a mold; the pressure head is a cylinder; the diameter of the pressure head is smaller than the inner diameter of the charging barrel by 0.2-1.0 mm; the length of the pressure head is 50-120 mm; one end of the pressure head is connected with a piston rod of a pressurizing oil cylinder through a connecting rod, and the other end of the pressure head extends into the charging barrel and can freely move in the charging barrel; one end of the flow passage communicates with the charging barrel, and the end of the flow passage and the axis of the charging barrel form an included angle of 20-90 degrees; the other end of the flow passage communicates with mold cavities; the temperature control system comprises heating elements and a temperature control instrument of the heating elements; the temperature control precision is + / -1 DEG C; and the heating elements are matched with the shape of the flow passage and wound around the outsides of the flow passage and the charging barrel.

Description

technical field [0001] The invention relates to the field of semi-solid processing of metal materials, in particular to the field of semi-solid squeeze casting technology, in particular to a flowing semi-solid forming method and a device thereof. Background technique [0002] In the prior art, the semi-solid processing technology uses special equipment to prepare the semi-solid melt or billet, and then pours or transfers the semi-solid melt into the injection cylinder, and uses a die-casting machine, die forging machine or rolling mill to Wait for compression molding, or heat the pre-prepared semi-solid billet to a molten state where solid and liquid coexist, put it into a mold, and use a die-casting machine, die forging machine or rolling mill to press and shape it. The former is called semi-solid rheological deformation, and the latter is called semi-solid thixotropic deformation. In the semi-solid rheological forming process, the preparation and pouring process of the se...

Claims

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Application Information

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IPC IPC(8): B22D17/20B22D17/22B22D17/32B22D18/02B22D18/08
CPCB22D17/007B22D17/2038B22D17/2218B22D17/2272B22D17/32B22D18/02B22D18/08
Inventor 邢书明高文静
Owner BEIJING JIAOTONG UNIV
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