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A die-casting method for an amorphous alloy vertical die-casting machine

A technology of amorphous alloys and die-casting machines, applied in the direction of casting molds, casting mold components, casting molding equipment, etc., can solve the problems of reduced mechanical properties of parts and inability to prepare amorphous parts, and achieve good molding effects, simple structure, and easy to use convenient effect

Active Publication Date: 2020-07-31
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This method of preparing amorphous parts cannot prepare relatively complex bulk amorphous parts; moreover, the prepared amorphous parts contain pores inside, which will greatly reduce the mechanical properties of the parts

Method used

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  • A die-casting method for an amorphous alloy vertical die-casting machine
  • A die-casting method for an amorphous alloy vertical die-casting machine
  • A die-casting method for an amorphous alloy vertical die-casting machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The selected alloy composition is Zr45Cu40Ag8Al7, and the specific steps are as follows:

[0082] Step 1. Place the quartz crucible 322 on the ceramic tray 341, and put the amorphous alloy raw material 351 into the tubular quartz crucible 322;

[0083] Step 2, closing the vacuum chamber 311;

[0084] Step 3: Vacuumize the vacuum chamber 311; when the vacuum degree reaches 6.5×10-4Pa, close the baffle valve 312 and fill it with argon; evacuate again, and when the vacuum degree reaches 6×10-4Pa, close the baffle valve 312 , filled with argon again;

[0085] Step 4, start the high-frequency induction coil 321 to heat the amorphous alloy raw material 351;

[0086] Step 5. When the temperature of the melt reaches 980° C. and maintains for 30 seconds, the external extraction pneumatic cylinder 343 quickly withdraws the ceramic tray 341, and the molten material falls into the graphite runner 345, and enters the mold cavity 346 through the graphite runner 345, After a time i...

Embodiment 2

[0089] The selected alloy composition is Zr41.2Ti13.8Cu12.5Ni10Be22.5, and the specific steps are as follows:

[0090] Step 1. Place the quartz crucible 322 on the ceramic tray 341, and put the amorphous alloy raw material 351 into the tubular quartz crucible 322;

[0091] Step 2, closing the vacuum chamber 311;

[0092] Step 3: Vacuumize the vacuum chamber 311; when the vacuum degree reaches 7.5×10-4Pa, close the baffle valve 312 and fill it with argon; evacuate again, and when the vacuum degree reaches 7×10-4Pa, close the baffle valve 312 , filled with argon again;

[0093] Step 4, start the high-frequency induction coil 321 to heat the amorphous alloy raw material 351;

[0094] Step 5. When the temperature of the melt reaches 1000°C and is maintained for 30 seconds, the external extraction cylinder 343 quickly withdraws the ceramic tray 341, and the molten material 351 falls into the graphite sprue 345, and enters the mold cavity 346 through the sprue. At a time interval...

Embodiment 3

[0097] The selected alloy composition is Ti37.31Zr22.75Be25.48Fe5.46Cu9, and the specific steps are as follows:

[0098] Step 1. Place the quartz crucible 322 on the ceramic tray 341, and put the amorphous alloy raw material 351 into the tubular quartz crucible 322;

[0099] Step 2, closing the vacuum chamber 311;

[0100] Step 3: Vacuumize the vacuum chamber 311; when the vacuum degree reaches 8.6×10-4Pa, close the baffle valve 312 and fill it with argon; evacuate again, and when the vacuum degree reaches 8×10-4Pa, close the baffle valve 312 , filled with argon again;

[0101] Step 4, start the high-frequency induction coil 321 to heat the amorphous alloy raw material 351;

[0102] Step 5. When the temperature of the melt reaches 1020°C and is maintained for 20 seconds, the external extraction cylinder 343 quickly withdraws the ceramic tray 341, and the molten amorphous alloy material 351 falls into the graphite runner 345, and enters the mold through the graphite runner 34...

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Abstract

The invention relates to the technical field of vacuum die casting of amorphous alloy, and discloses an amorphous alloy vertical die casting machine and a die casting method. The amorphous alloy vertical die casting machine comprises a crucible, a vacuum system, a heating system, a die casting system, a mold, a cooling system and a control system, wherein the vacuum system comprises a vacuum chamber, a mechanical pump, a molecular pump and a control valve; the heating system comprises a material melting and heating unit and a mold heat-preserving and heating unit; the die casting system selects a pneumatic mode and is used for completing draw-out of a ceramic tray and extrusion of a metal push rod; the cooling system comprises a water cooling unit and a corresponding pipeline and is applied to the cooling vacuum system, the heating system and the mold; and the mold is made of pure copper. The amorphous alloy vertical die casting machine and the die casting method have the following beneficial effects: by the above technical scheme, the amorphous alloy vertical die casting machine is simple in structure, convenient to use and good in forming effect, and air holes do not exist in theprepared amorphous alloy products; and the pure copper with high cooling speed serves as the mold material, so the selection range of the amorphous alloy components is wide.

Description

technical field [0001] The invention relates to the technical field of vacuum die-casting of amorphous alloys, in particular to an amorphous alloy vertical die-casting machine and a die-casting method suitable for bulk amorphous alloys. Background technique [0002] Amorphous alloy is a metallic solid material in an amorphous state, also known as "metallic glass". Amorphous alloys have excellent mechanical properties such as high strength, high hardness, and high elasticity, and have broad application prospects in the fields of electronics, machinery, and optics. [0003] At present, the preparation of large amorphous alloy parts is generally realized on traditional bedroom vacuum die-casting machines. Traditional bedroom vacuum die-casting machines include (such as figure 1 shown): a stationary mold 131 and a connected horizontal sleeve 121; a movable mold 132, which can move horizontally relative to the stationary mold 131; an induction melting furnace 111 for heating the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/14B22D17/02B22D17/22C22C45/10
CPCB22C9/061B22D17/02B22D17/14C22C45/10
Inventor 王辉李群吕昭平吴渊刘雄军
Owner UNIV OF SCI & TECH BEIJING