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Melted magnesium supply pump and control method for the same

A technology for supplying pumps and magnesium melting, which is applied to equipment for supplying molten metal, pump control, control of pouring molten metal from ladles, etc., which can solve the problems of high cost and low maintenance

Active Publication Date: 2011-07-20
TOKAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the point of view of supply accuracy, the piston type pump is excellent, but there are problems of high cost and low maintenance

Method used

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  • Melted magnesium supply pump and control method for the same
  • Melted magnesium supply pump and control method for the same
  • Melted magnesium supply pump and control method for the same

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Embodiment Construction

[0025] Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. The same reference numerals are assigned to the same or equivalent structural elements, members, and processes shown in the drawings, and overlapping descriptions are appropriately omitted. In addition, the embodiment does not limit the invention but is only an example, and all the features described in the embodiment or a combination thereof are not necessarily essential technical features of the invention.

[0026] figure 1 It is a figure which shows the structure of the magnesium melt supply apparatus of embodiment. The magnesium melt supply device 100 mainly includes a melt conduit 102 , a container (crucible) 104 , a melt supply pump 106 , and a control unit 120 . Magnesium ingots, reflow materials, etc. (hereinafter referred to as ingots or materials) heated by an unillustrated ingot preheating device are appropriately charged into the ingot chargi...

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PUM

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Abstract

The present invention provides a melted magnesium supply pump with high supply precision. A blade type melted magnesium supply pump (106) conveys the melted magnesium (114) stored in a container (104) to a melted magnesium pipe (102). A control part (120) changes a rotation speed of a rotor according to a liquid level height of the melted magnesium (114) in the container (104). The control part (120) controls so the rotor performs an intermittent operation which alternates repeatedly in the operation period and the stopping period. Furthermore the number of rotation of the rotor is increased in each operation period, wherein, the rotor is rotated for a certain time period in the operation period, and the rotor is stopped for a certain time period in the stopping period. The control part (120) determines the number of rotation of the rotor for satisfying an equation: deltah=a*N2+b, wherein deltah is a difference between a reference liquid level height (H) and a current liquid level height (h); a and b are real numbers.

Description

technical field [0001] The invention relates to a supply pump for molten magnesium. Background technique [0002] In recent years, magnesium and its alloys, which are both lightweight and highly rigid, have attracted attention as metal materials that can be used for housings of automobiles and electronic equipment. When casting magnesium, materials such as magnesium billets, reflow materials, end materials, and NG materials are melted by heating, and the melt is pumped from containers such as crucibles or tanks by a melt supply pump and supplied to the molding machine. As the molten magnesium supply pump, a supply pump using an electromagnetic pump, a supply pump using a piston, a supply pump using gas pressurization, and the like are known. [0003] Patent Document 1: Japanese Patent Application Publication "JP-A-2000-126861" [0004] Patent Document 2: Japanese Patent Application Publication "JP-A-2001-9561" [0005] Patent Document 3: Japanese Patent Application Public...

Claims

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Application Information

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IPC IPC(8): B22D37/00B22D21/04B22D17/30B22D17/08
CPCB22D37/005B22D39/00F04C2/344F04C13/001F04C14/08F04C2210/20F04C2240/40Y10S415/00Y10S417/00
Inventor 渡边祥彦
Owner TOKAI
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