JPS5956952A - Continuous casting method of metal - Google Patents

Abstract

PURPOSE:To form a casting texture of a fine regular crystal having excellent processability by supplying continuously an oscillation transmission body having the same quality as the quality of a molten metal into the molten metal pool in a casting mold on a charging side in such a way that the front end thereof is dipped in the molten metal. CONSTITUTION:A molten metal 4 is charged into a well 3 and a solidified cast ingot 5 is drawn continuously from the opening at the bottom end. An ultrasonic wave transmission body 6 having the same quality as the quality of the molten metal 4 is supplied at a specified speed by means of pinch rolls 7 into the molten metal 4 in the wall 3. The horn 8a of an ultrasonic oscillator 8 is pressed to the body 6 between the rolls 7 and the well 8 and an ultrasonic oscillation is applied to the body 6, whereby the ultrasonic oscillation is applied to the molten metal 4 in the well 3 through the body 6 and the molten metal is cast continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to metals, particularly aluminum, 1luminium
Concerning the continuous or semi-continuous casting method of copper and copper alloys (, stabilizing the addition of ultrasonic vibration of melting 7M'\, 't
It is used to produce fine equiaxed crystals that are excellent in processing the cast structure without C contaminating the Fg hot water.

Qit IkoRij~sweet; and from the other end)
2t) 1151! ;II2 The withdrawal method has been continuously developed. However, the balance of casting factors is disrupted by +9 1' [
Ru. (2,j-]1jshi~((ko・tonl−74bok1~iτdo(、2lfather-in-law 1 person 1 riro defective or easy to talk < %
s, this or light] 1 (jrudo, - then 11111'
M J, ri defect/r'j +lj, person 1'shi,! Ff
Akira (7, 1 item'i'i /)" fl (l-'! Le.

- If Buno has such a defect or mediocrity, then C also has 12HI
11A /)' 1n2Ill '＜1: Axis-saving product''
Knee h n 1. −1:, 9< 1. -L division i attack c
3 lshi ('f-'s harmful 111 or reduction sword 4
'1, C is here.

For this reason (, L wood?) 1 1 1 1 1 weaving 111 pull) (, knee) and (Φ non-shimmering C. For example, v'i 15 ■ Silk X 1 ((refined One of the methods used in the Riro/J method has traditionally been to cast a sword in molten metal with a hand-held method. It is very important for people who have 1 knowledge of Shindo. Achieve 61 points beyond the 11 point; (゛), it gradually leaks in the molten metal, and it is technically difficult to add C ultrasonic wave f・1 to stabilize it for a long period of time: Il 1.'= +.L calculation There was a flash point where the molten metal was eroded by the horn σ.

The present invention is designed to provide super i;'1 wave and 1 movement to the leaking molten metal.
As for the method of addition, as a result of various tests δ], ? We have developed a continuous soaking method for metals by applying ultrasonic waves that remain stable for a long time without contaminating the hot water. There is a casting method in which molten metal is poured into one end of the mold and the ingot is then pulled out from the bent end. - Continuously supply a vibration transmitting body such that its tip is in the molten metal, apply t3 y4 wave vibration to the transmitting body and cast it. )
It is characterized by the fact that it is marketable.

Immediately 1. ) The present invention is a water-cooled mold (1) with a water-cooled mold (1) provided with a water-cooled mold (1) around its periphery as shown in FIG. A sump (3) is installed (), and the molten metal (/1) is poured into the sump (3).
) is continuously extracted η. Molten metal (/I) in the hot water tank (3)
Inside, the molten metal is the same (very high C1) R22i1
The body (6) is fed at a constant speed by the pinch roller (7), and the transfer body (
6) M ultrasonic oscillation: j% ((',') horn (
8a) to transmit ultrasonic vibrations to the transmitter (6).
Lift (3) via the transmitter (6) by hJ
Inner Raku'rL? , (ll i(this ultrasonic vibration is 1・1
Addition C Continuously performs casting.
) +ljj 7''('n J 4hi :F) Receives J and propagates to the solidification interface, refining the crystal grains.

;1,l,:transmitter (6) L;E iγf)easy (4)
Continuous rotation: Since the target melts, the tip is in the molten metal;;)
'iL' i mountain I mallet (1
j (pay riru 1.ma lko 1mu) t14\
((3) f) Since it is made of the same material as 4), it melts into the molten metal (/1.) and there is no risk of contaminating the molten metal. cold tower
4 has been explained, but in this case (not limited to the example shown in FIG. metal belt (1
1) is moved in contact with Bushico 1-1-ru (12), million id 1-1-ru, tension 1]-ru, etc. ) between the water-cooled mold (
1a), and at one end of the mold (1a) Subau 1 to (
13) Dry the molten metal (/l) at the 9th point, and take out the solidified ingot from the other end. Figure 1. Similar to the vertical water-cooled casting shown in η, the molten C easily (/
1) Pinch the super 1-(rind) 71 (6) of i with /I through C molten metal through (2, Subau 1-(13)) 1"-ri constant speed' (-jl feed, super between bottle-f11-rule (7) and spout (13)) the horn (8i1) of wave treble shaker (8)!!11 concubine By applying ultrasonic vibration to the molten metal (4) through the transmission 1 (6);
7. Note 1) f, 1 hit) easy metal do the same (A
(A 4' point 911, rod-shaped, band-shaped tubes of various shapes can be conveniently used. Also, the molten metal zone in the 11 part between the molds)
The electric current inside the module (2 ultrasonic oscillators, the ultrasonic vibrations 4 and 4) (explained in section 9 above) (;(Add f' vibration in the frequency range of 31, 100 II 7-'E't K / to the global vibration cb).

Here's an example of how to explain 10 books 5 (explains J and C).

Real 1'+l column example ('1) Figure 1 1= ;j-< ! I vertical 'J'! * 7ri6'21 (inner diameter IGOmm>, use left'!i l1l
(99,," + 90 molten aluminum was poured into a continuous S] "t1',;・).In the molten metal boule at the center of the &4 mold, there was a molten metal made of the same material as the molten metal. Purity 9
9.5% Tsumugi-F' Luminium Inr (i white + 512
, Snm') as Ill) Y I tree and 7 (1 mountain, 300 mm per minute by hinf1-'-le,
G 00 nw.

! ] 0 (l mm (1) jlj degree j'2, Sl+ in the transmission body, '-1'!, set in part 1 ()
Super? A wave a1. Touch the horn of the vibrator to vibrate 2 (Moon < Hy, Vibration IJ207) to f'J l
j Shita 1, like this '1 temple + 1ffl L/
7ζI1gI! 1! Which one is it for? Axial crystals should be reheated to 7 (hot (j: 1 to 2)
0mm (1) 4I j) + 1, 2 extrusion additions.

This (42 (, 2 ") and il'r + 1 i?
r! 2-11.0 bundles of ultrasonic vibration were cast without applying ultrasonic vibrations, and the number of defects in bars 1-7 and extruded for 1 time was compared with the number of defects shown in Table 1.

Table 1 5: Jj j electric power method NO transmission j Y body supply method 1 piece Number of defects (mn+ ,' min 〉(1 factor, ・H1',
,) Method of the present invention 1' 300
5600 3 900 2 Conventional method) Person 4-15 :;ii 1 table +,) As is clear from this defense, J, Re(3F, Number of defects (('5,;':lI Re) It turns out that there is a super IT・&S 1.

Sho transmission (4, ta) it! Feeding lj l-0 or large culm defects etc. 2 are less 1; ) (J0, this 4' is 1°1
゛) Think about how long the length below the hot water surface of a transmitter of 1 speed is 1:1υ, and 1 mountain is 1:1, and 1 time is 1 time.

Example (2) 2nd r:/, 1 to Hori/\ru 1 hair 1 to small eel type continuation; jar Ju1 ha (using △l-0.4% Mg
-0.5%Si alloy r'li! t;i:'f1+-
Created 1't17 Ill! 7'i on 1lli side
Molten metal 11 il is passed through the trapezoidal shape of 100 mm2 into the center of the molten boule at the mold opening.
-4J'itj's △l-0. II%lvl! J-0
, 5%S j 8-karat gold bars with a diameter of 9.5 mm were put together as one body, and 775/2 (10 mIn.
, 400mm, 1 in G (10trItn)
σ(f”)
-! l Shita.

All of the Inno 1 Sung Dynasty 1 Sha coarse weavings exhibited fine equiaxed textures. ; I Ic This rust j3v is continuously C hot rolled, and the diameter is 9,! The number of defects was counted using an eddy current flaw detector. The result”6
? ζ) 1 branch (=J I) 11 pieces T-” S! i
You L1 extended i, 11 request 511. Comparison with 4; ii and 1
, are shown in Table 2.

2) 2nd method Noden? Body supply′) Moderate Number of defects (
mm/min) (1 hard/40',) Honkomei method 5
200 4 (340 (12 7 [3002 1 car) k no'i, person 21] As is clear from Table 1, the number of defects in all cases using the method of the present invention is as low as 11 ali L/'C. b) (l is acceptable.

``Implementation of aluminum-based materials a''l i
'71 A] 715 to 7.2 can be applied to copper, other metals and alloys, and the same effect can be achieved.

In this way, according to the method of the present invention, the molten metal in the casting J(v+(-T Ljl 1.'; : To solve the problem of fluctuations in grain size and soluble contamination.
1+ /,, 1-The inscription of A-6 item 7'1 made of old scrolls is stable ty C easily blue (゛Excellent effect a) CJ ia + 'f) (υ ( Akuten 1゜

[Brief explanation of drawings]

Fig. 1 (, 1, showing an example of the method of the present invention f + tl + d explanation p 1.9') Fig. 2 (, 1, Kimitsuaki) 4 explanatory drawing (( Ginoru, 1 ('1)lla) Water-cooled 3-nof type (2) Ji17/
7tsuto (r3) easy lkome
(/1) soluble (j3)
Cast 1st (6
) 1 person 1 character 1 line (7) pinch 1]-ru (8)
Ultrasonic oscillator (9) 5/i! Concave groove for SE (10
) Rotating wheel (11) Metal, to bell 1 Figure 1

Claims (1)

[Claims] Ryo 1 Hanawa! If /I'(Hl water 111 one end of the mold is solidified from the metal melt ("-dry, the other r+;, :i /'= TJ!+ 181j continuously, shi(drawer♀ chisel JPJ1ノ?To people +I＞I【、11
The melt in the mold (in the easy file, the transferable one is the same (11 of A-purchase)
1 (Movement 11) Place one stick at the tip or in the field.
U'+Q
% 1411L Alj 'j'''4 wave vibration f4 J
1. Continuous casting method for metal casting.