JP2009061457A - Ladle for carrying molten metal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ladle for carrying molten metal which ladle can not only keep the temperature of the molten metal but also can achieve various benefits to be required in carrying the molten metal. <P>SOLUTION: The ladle for carrying molten metal includes: a cylindrical ladle body with a bottom, which ladle body has a refractory heat insulating layer arranged over the whole inner surface, an upward inlet port, and an outlet port for discharging the stored molten metal; an upper lid which can be opened and closed, and has a refractory heat insulating layer arranged over the whole back surface so as to continue to the refractory heat insulating layer of the ladle body when the inlet port of the ladle body has been sealingly closed; and a pouring lid which can be opened and closed, and has a refractory heat insulating layer arranged over the whole back surface so as to continue to the refractory heat insulating layer of the ladle body when the outlet port of the ladle body has been sealingly closed, wherein a plane shape or rod shape heat generating device is buried in the refractory heat insulating layer of the ladle body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ladle for transporting with a transport vehicle such as a truck or a freight car.

  For example, in an aluminum die casting factory, especially a major aluminum die casting factory, etc., an aluminum ingot is purchased from an aluminum alloy manufacturer, and it is purchased in the state of molten aluminum from an aluminum alloy manufacturer without melting the aluminum in-house. The number of casting cases is increasing. It is because the aluminum alloy maker melts the ingot again and melts and casts it again because it is troublesome and wastes melting energy.

  When transporting, the molten aluminum is put into a ladle, except for ladles used in the factory (for example, see Patent Documents 3 to 5 below), a ladle with a temperature increasing function has been conventionally added. Has not been provided, and has adopted a structure that keeps the temperature drop during transportation to a minimum with an inner wall made of a refractory material with high heat insulation (see, for example, Patent Documents 1 and 2 below). This is because a decrease in the molten metal temperature due to the absence of the temperature raising measure adversely affects the molten metal quality such as the generation of sludge.

Japanese Patent No. 3903321 JP 2001-287021 A Japanese Patent No. 2692367 Japanese Patent No. 3055243 JP-A-11-320079

  Due to this structure, there is a natural limit on the transfer distance and transfer time, and in many current sites, only the required amount is transferred and the molten metal is supplied at the required time. That is, there is a problem that the supply of the molten metal is stopped due to a sudden trouble during transportation or the like because the molten metal at an appropriate temperature cannot be stocked.

  This invention is made | formed in view of the said situation, Comprising: The objective of this invention is to provide the ladle for transportation in which the various convenience calculated | required at the time of transportation was aimed at besides being able to hold | maintain the temperature of molten metal.

  The ladle for molten metal conveyance according to the present invention made to solve the above-mentioned problems is provided with a refractory heat insulating layer over the entire inner surface, has an upward inlet, and has a spout for discharging the molten metal contained therein. (It is good also as a structure which is not equipped with the spout 4). When the bottomed cylindrical pan body and the inlet of the pan body are sealed and sealed, the fire-resistant and heat-insulating layer continuous with the fire-resistant and heat-insulating layer of the pan body is backside. An upper lid that can be freely opened and closed provided in the entire area, and a pouring lid that is openable and closable that has a refractory and heat insulating layer continuous with the fire and heat insulating layer of the pot body when the pouring outlet of the pot body is sealed and sealed, A planar or rod-shaped electric heating device is embedded in the fireproof heat insulating layer of the pan body.

  By providing a planar or rod-shaped electric heating device, the power supply means can also be small, simple and suitable for transport, suppressing the temperature drop of the molten metal during transport, and even at the power destination If supplied, the temperature of the molten metal can be kept. As such, the molten metal can be supplied seamlessly and can be stocked, so that the production efficiency is greatly improved in aluminum alloy manufacturers and casting manufacturers.

  In addition, by embedding a planar or rod-shaped heat generating device inside the fireproof heat insulating layer of the pan body, it is possible to prevent the hot air from directly touching the molten metal as in the atmosphere heating and suppress the generation of oxides. In addition, it is possible to prevent the heater from directly touching the high-temperature molten metal, and it is possible to prevent the electric heating device such as a ceramic heater from being damaged. Conversely, when heating the solidified molten metal or ingot, there is an advantage that the melting efficiency is increased because the entire surface can be uniformly heated through the entire inner surface of the pan body. Furthermore, even when the power supply is shut off, the heat of the heat generating device is stored for a long time in the surrounding refractory heat insulating material, so that there is an advantage that the temperature drop is suppressed.

Embodiments of a ladle for conveying molten metal according to the present invention will be described below with reference to the drawings.
The ladle for conveying molten metal according to the present invention includes a bottomed cylindrical pan body 1 for storing molten metal, an openable / closable upper lid 3 for sealing an inlet 2 of the pan body 1, and a spout 4 of the pan body 1. It is comprised with the pouring lid 5 which can be opened and closed freely.

  The pan body 1 is covered with an iron plate as an exterior 6 and has a refractory heat insulating layer 7 on the entire inner surface, and has an upward inlet 2 and a spout 4 for discharging the molten metal contained therein. I have. As a material of the fireproof heat insulating layer 7, for example, a heat insulating fireproof brick may be used. Further, around the pan body 1, the pan body 1 is fixed to the loading platform of the transport means 8 with a wire, a turnbuckle, or the like so that a positional shift or the like does not occur on the transport means 8 due to shaking during transport. For this purpose, a plurality of fixing hooks 9 or fixing rings 10 are provided uniformly over the entire circumference.

  The pan body 1 in this example is provided with a planar or rod-shaped heating device 11 embedded in the fireproof heat insulating layer 7 so as to be heated at an equal rate with respect to the entire volume of the pan body 1. The heating device 11 in this example is a rod-shaped electric ceramic heater (maximum set temperature 1000 ° C.) incorporating a thermocouple with an output of less than 10 kW. Therefore, in the example shown in FIG. 2, in order to transport the molten metal while operating the heat generating device 11, only the power supply 12 that can be supplied to six equally distributed over the entire side wall of the ladle is transported by a transportation vehicle or the like. It is sufficient if the means 8 is provided.

  The upper lid 3 is pivotally supported by the outer casing 6 on the upper surface of the pan body 1 and is provided with a projecting piece 14 at the edge farthest from the rocking shaft 13, while the upper lid 3 is closed. A bolt 15 having a male thread is pivotally supported on the exterior 6a of the portion covered by the projecting piece 14 so as to be swingable. The projecting piece 14 is provided with a notch 16 through which the bolt 15 is inserted, and a handle 17 screwed to the male screw of the bolt 15 abuts on and pressurizes the upper surface of the projecting piece 14 so that the upper lid 3 is opened. It is regulated and the inlet 2 of the pan body 1 is sealed.

  The pouring lid 5 has one end of a support bar 18 fixed to the center of the surface in parallel to the surface. The support bar 18 is provided to stabilize the position of the pouring lid 5 at the time of mounting and dismounting from the spout 4, and the other end of the support bar 18 extends from the side wall of the pan body 1. The support frame 20 is connected to the tip end of the support 19 and is pivotably mounted about the support shaft 19, while a support frame 20 along the turning trajectory of the support bar 18 is provided in the vicinity of the spout 4 of the pan body 1. The upper edge of the support frame 20 is fixed, and a notch portion 21 into which the support bar 18 is fitted when the pour lid 5 is attached to and detached from the spout 4 is provided.

  Further, in order to maintain the state of being fitted in the notches 21, the hooks 22 that restrict the lifting of the support bar 18 from the notches 21 are put on the support bars 18 fitted in the respective positions, and the pouring lid The purpose of stabilizing the position at the time of attaching and detaching to the spout 4 of 5 is achieved, and in particular, when the spout lid 5 is attached, the sealed spout 4 is maintained and the pan body is maintained. 1 prevents the molten metal contained in 1 from being scattered or leaked.

  The upper lid 3 and the pouring lid 5 are provided with a fire-resistant and heat-insulating layer (not shown) over the entire back surface thereof, and when sealed, the fire-resistant and heat-insulating layer is continuous with the fire-resistant and heat-insulating layer 7 of the pan body 1.

  The ladle for conveying molten metal according to the present invention is configured as described above, and the ladle in which the molten metal is accommodated in the conveying means 8 such as a transport vehicle is fixed to the conveying means 8 with the legs 24 with bolts or the fixing hook 9. Alternatively, the fixing ring 10 is used to connect the power supply portion 23 of the heating device 11 of the ladle to the power supply 12 that is connected in advance as shown in FIG. If it connects, the molten metal accommodated in the ladle mounted in the loading platform is managed by the temperature control of the said heat generating apparatus 11 at appropriate temperature. Further, as described above, the upper lid 3 and the pouring lid 5 seal the injection port 2 and the pouring port 4, respectively, so that it is possible to avoid accidents caused by molten metal scattering or leakage due to shaking.

  According to the ladle for conveying molten metal according to the present invention, the restrictions associated with metal forming that the melting of solid metals such as ingots and the manufacture and casting of aluminum alloys must be performed in the neighborhood according to the scale are removed. Even in a small-scale molding factory, it is possible to perform various moldings in terms of scale, material, etc. as compared to the past by obtaining molten metal from other locations.

It is a side view which shows an example of the ladle for molten metal conveyance by this invention. It is a top view which shows an example of the embodiment of the ladle for molten metal conveyance by this invention. It is a side view which shows an example of the embodiment of the ladle for molten metal conveyance by this invention.

Explanation of symbols

1 pan body, 2 inlet, 3 top lid, 4 outlet, 5 pouring lid,
6 exterior, 7 fireproof insulation layer, 8 transport means, 9 fixing hook, 10 fixing ring,
11 heating device, 12 power supply,
13 oscillating shaft, 14 projecting piece, 15 bolt, 16 notch, 17 handle,
18 support rods, 19 support shafts, 20 support frames, 21 notches, 22 hooks,
23 power inlet, 24 legs,

Claims (1)

A bottomed cylindrical pan body with a refractory heat insulation layer on the entire inner surface, an upward inlet, and a spout for discharging the molten metal contained therein, and the inlet of the pot body are sealed and sealed When opening and closing, an openable / closable upper lid provided with a fire-resistant and heat-insulating layer continuous with the fire-resistant and heat-insulating layer of the pan body, and a refractory and heat-insulating layer of the pan body when the pot spout of the pot body is sealed and sealed Consists of an openable and closable pour lid with a refractory heat insulation layer on the entire backside,
A ladle for transporting molten metal, in which a planar or rod-like heating device is embedded in the fireproof heat insulating layer of the pan body.

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