JPS5855169A - Automatic casting method for cast ingot - Google Patents

Abstract

PURPOSE:To cast plural cast ingots simultaneously and quickly by weighing molds independently, and dispensing a required amt. of molten metal into the molds through an arithmetic control circuit. CONSTITUTION:With the weight of a mold tare weight 2 from a weighing machine 4 inputted to an arithmetic control circuit 5 as a reference, dispensing of a required amt. of molten metal is instructed to an oil hydraulic cylinder 6. Upon receiving the instruction, the charging port 8 of an intermediate ladle 7 is opened to dispense the molten metal into the mold 2. When the amt. of the charged molten metal attains a required amt., the dispensing of the molten metal is stopped by the instruction of the circuit 5. The molds 2' is carried to a rapping part C, where the casting is rapped from the mold and is transferred automatically to the next stage D.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically casting a steel ingot for degenerating forging and rolling of, for example, a wheel of a transportation vehicle, which is an annular body.

Upper f5F) As for the casting method of a lump for degenerate annular forged rolled products, note below: ``Method f yo to obtain a gonzo-shaped! A cheese impregnating method is known in which a plurality of casters 1i are arranged in parallel and sequentially poured.

However, in KsI's long ingot method, one ingot is cut into circular slices, so there are many cut-off parts such as one riser, injection pipe, runner, etc., and because there is only one cooling (tAf) cutting, there is a large amount of heat loss. . In the latter fishing method, the ``high 1'' of the lump is
/1i ratio" is 10 or more, therefore, Katakiuchi ff1t+
There is a quality problem because 8g of loose or defective products remain, and in addition, the quality varies and the time required for one casting is long, making it difficult to cast in large quantities.
1 has the disadvantage that it is not suitable.

The present invention eliminates the above-mentioned drawbacks of the conventional casting method and directly
The purpose of this invention is to easily provide an automatic casting method for automatically and quickly mass producing ingots for processing, and examples of the method will be described in detail below.

That is, two rollers are a feature of the method of the present invention.

- A weighing machine with a tilted lid that measures the weight of the raised ingot, and a
Equipped with a molten metal cutting device that works in conjunction with the needle heavy machine and delivers the amount of molten metal into the casting lid via a turtle calculation control circuit, and automatically casts an ingot by controlling the weight of the rising metal. It is in.

Next, in order to effectively carry out the method of the present invention, an example of equipment will be explained using a diagram.
Line diagram of the processing process, Figure 2 is the molten metal cutting device grs
It is an enlarged all-figure.

In Figure 1, % (4) is the mold setting part, (B) is the casting part - (0) is the mold cutting part, (9) is the scarf processing part,
(to)) is a heating furnace, and (F) is a rolling section. It consists of a series of line equipment.

In Figures 1 and 2, (1) is a transport vehicle for molds (2), and a plurality of molds 1 [(2) are placed side by side at a fixed position and transported to the next mold W6 @). be done. Casting W
(B) The upper mold (2) located at K position is inserted into the cylinder (3
) y) * ツ)' (3) KZ is the load cell that is used to raise the molten metal to the position where it can be poured. A function that first measures the weight (tare weight before casting), inputs the measured value into the calculation circuit (computer) (6), and then inputs the change in weight from the start of pouring. have.

(5) receives the hexagonal value from the load cell (4) and calculates the amount of molten metal required for n units of processed ingot in (2), and calculates the amount of molten metal required for n units of processed ingot, 1 Niji Linda 16)
This is an arithmetic control i11 circuit (computer) which makes the output of TICMll.

The oilfield cylinder (6) is operated by the output r from the control circuit (5), and is operated by the pouring stopper (9) in the ladle (7) to which it is directly connected.
) to open and close the pouring spout (8).
8) and mold (2) into which the tip (lower end) is to be cast.
) is the immersion nozzle of the molten metal cutting device inserted into the
Outside the tip @VC, the cylindrical cover (b) at the bottom opening is used as Jl to prevent splashing during pouring (b)
is a coating material that retains heat while covering the upper surface of the molten metal (A) poured into the mold (2). The other (99X casting mold (2) r+ is a heat insulating agent or heat insulating plate (&-shaped heat insulating agent) that heats and heats the upper surface of the molten metal during transfer.

■ is casting tII! In order to titm the conveyance speed when conveying n ingots from molds to 11 (0)
- Avoiding -, transport the molten metal (a) to the next f) mold cutting part (0) K with minimum darkness so that the # side of the molten metal (a) does not fluctuate. In addition,
The ingot (b) obtained in the die cutting section (0) is read continuously on the line η.
The scarf processing g(n)+c is sent, the required scarf processing is automatically performed, and after being heated in a III heat furnace (heating), it is rolled in a rolling beating (IF).

In the above embodiment apparatus, the method of the present invention directly
The molten metal in the Nakanoseki ladle is weighed by a weighing machine that weighs the expected weight of the unit ingot n to be rolled (unit "fjL"), and an arithmetic control circuit that works with the weighing machine. It is automatically cut out within the mold.

That is, the arithmetic control circuit (5)r pours the molten metal from the input load cell (weighing machine) (4) into the hydraulic cylinder (6) using the NFM type tare (2) In weight (unit weight) before casting as a bridge standard. outputs a command, and in response to it, the hydraulic cylinder (6
) raises the stopper (9) directly connected to it to push the pouring spout (8) of the first intermediate ladle (7) and cut out the molten metal into the device (2) through the immersion nozzle.By starting this pouring, In casting II (2) (successive molten metal injected art% sof)
At the same time as the fourth surface rises, the cylinder (3) supporting the lower part of the iron part (23F) sequentially descends by the amount that the - surface has risen, and the - surface level is maintained at a constant height 5 (with respect to the conveyor platform (1)). ) will be retained. (Then, the molten metal becomes 1 in the mold (2)
When sat, arithmetic #circuit (5)! Since the weight change from cell (4) is inputted every moment, the stopper (9) remains open until the poured amount reaches the required amount (required weight) to obtain the desired ingot. , when the required amount C is reached, the arithmetic control circuit (5) o≦stopper+Q) outputs fl occlusion and controls M so that cutting out of the molten metal is stopped.

When pouring stops J-#i7, the ingot (2) is at the same level i11 as the conveyor table (1), and the surface of the ingot is covered with the coating material o4t11 shown in the figure to maintain heat retention. In that state, it is transported to the next f1 die cutter 11 (G). Of course, this transport is carried out at a slow speed using the acceleration control device Q4r at the minimum speed to prevent the molten metal surface Tt@ from moving. It is. After being transported, as shown in the figure, the scarf baskets are removed and then automatically transferred to the scarf basket manufacturing process where they are subjected to the required operations or processing.

In the method of the present invention, the S type is weighed independently, an intermediate ladle is used to cut out the required amount of melt (1kF) via a computer control circuit, and at the same time, an ingot of multiple IkF) can be cast. This is top pour casting using a single immersion nozzle, and by using a cylindrical cover as shown in the figure, it is possible to prevent the occurrence of splash. π And quickly cast.

Also 8! y[1tf) Brief explanation The wi side shows an example of a device for carrying out the method of the present invention. Figure 1 is a front view of a casting-to-processing line including the device, and Figure 2 is a molten metal cutting line. It is an upper tm diagram showing a part of the main part of the device in cross section.

(Top is the mold setting part, 01) is the casting part, (O) is the mold removal W
h1(D) is the scarf processing section, @) is the heating furnace, and (Leopard is the rolling section.

(2) is the mold percentage (2) is the mold after casting, C3) is the cylinder, (4) is the load cell percentage, (6) is the calculation control circuit, (6
) is the oilfield cylinder (7) is the intermediate ladle, (S) is the pouring port, (S) is the streaked collar, - is the immersion nozzle % (to) is the coating agent, Q4 is 111]''di degree control device, (99) is a heat-generating heat insulating agent or heat insulating board.

61 patentees Sumitomo Metal-Kinsha Kogyo Co., Ltd.

Claims (1)

[Claims] (1) In order to measure the weight of the ingot, it is equipped with a weighing machine on the mold side and a molten metal cutting device that cuts out the necessary molten metal through a Kei calculation control circuit, which is linked to the weighing machine and cuts out the necessary molten metal. An automatic ingot casting method characterized by automatically casting an ingot by increasing the lifting weight.