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Raw Material For Thixomolding, Method For Producing Raw Material For Thixomolding, And Molded Body

A technology of thixotropic deformation and manufacturing method, which is applied in the direction of transportation and packaging, metal processing equipment, etc., and can solve problems such as dripping, nozzle clogging, etc.

Pending Publication Date: 2019-03-05
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned method, when producing the metal particles whose primary crystal ratio is controlled, the semi-solidified slurry is dripped from the nozzle.
Therefore, there is a problem of inducing nozzle clogging when producing metal particles

Method used

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  • Raw Material For Thixomolding, Method For Producing Raw Material For Thixomolding, And Molded Body
  • Raw Material For Thixomolding, Method For Producing Raw Material For Thixomolding, And Molded Body
  • Raw Material For Thixomolding, Method For Producing Raw Material For Thixomolding, And Molded Body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0102] Next, specific embodiments of the present invention will be described.

[0103] 1. Manufacturing of formed bodies

[0104] Sample No.1

[0105] [1] First, the raw material is melted in a high-frequency induction furnace, and powdered by a high-speed rotating water stream atomization method, to obtain a raw material for thixoforming formed of magnesium-based alloy powder. The alloy composition of the obtained magnesium-based alloy powder is shown in Table 1.

[0106] The setting conditions of the high-speed rotating water jet atomization device (powder manufacturing device) are as follows.

[0107] ·The spray pressure of the coolant: 100MPa

[0108] ·The temperature of the coolant: 30℃

[0109] ·Temperature of molten metal: melting point of raw material +20℃

[0110] [2] Next, the raw material for thixoforming is molded by the thixoforming method using an injection molding machine. Thus, a molded body is obtained. In addition, the molding conditions at this time are as follows.

[...

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PUM

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Abstract

The invention provides a raw material for thixmolding, a method for producing a raw material for thixomolding, and a molded body. The raw material for thixomolding includes a magnesium-based alloy powder which contains calcium in an amount of 0.2 mass % or more and 5 mass % or less and aluminum in an amount of 2.5 mass % or more and 12 mass % or less, wherein the magnesium-based alloy powder includes an oxide layer which has an average thickness of 30 nm or more and 100 nm or less and contains at least one of calcium and aluminum as an outermost layer. The average dendrite secondary arm spacing of crystal structures of the magnesium-based alloy powder is preferably 5 [mu]m or less.

Description

Technical field [0001] The invention relates to a raw material for thixoforming, a method for manufacturing the raw material for thixoforming, and a formed body. Background technique [0002] Magnesium resources are abundant, so they are easy to obtain. In addition, the specific gravity of magnesium is about two-thirds of that of aluminum and about one-fourth of that of iron. Therefore, when various structures are made of magnesium, the weight of the structure can be greatly reduced. In addition, magnesium also has good properties of electromagnetic wave shielding, vibration attenuation, machinability, and biological safety. In this context, magnesium alloy parts have begun to be used in products such as automobiles, aircraft, mobile phones, and notebook computers. [0003] As a method of manufacturing magnesium parts, for example, gravity casting or die casting or thixoforming casting methods, such as hot extrusion, cold extrusion, rolling, forging, plastic processing methods, s...

Claims

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Application Information

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IPC IPC(8): B22F9/08B22F1/02C22C23/02C22C23/00B22F1/05B22F1/16
CPCB22F9/082C22C23/00C22C23/02B22F2009/0892B22F2009/088B22F2009/0888B22F1/16B22F1/05C22C1/0408B22F2009/0812B22F2999/00B22F2009/0828B22D17/007B22D17/2061C22C2200/00B22F3/225B22F2301/058B22F2304/15B21J5/00
Inventor 秀嶋保利中村英文大高启义
Owner SEIKO EPSON CORP
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