JPS6046338A - Method and apparatus for preparing amorphous composite material - Google Patents

Abstract

PURPOSE:To uniformly disperse particles throughout an amorphous matrix without forming a solid solution, in a method for preparing the title material having second phase particle dispersed therein according to a quenching method, by injecting a molten matrix alloy to the particles to perform mixing under stirring. CONSTITUTION:A matrix alloy sump part 14 is provided to the upper part of the throttled part 11, which is provided above a slit shaped minute jet orifice 9, of a round tube 10 and a temorary sump part 13 of a mixture consisting of the matrix alloy and particles comprising WC is provided below the throttled part 11 and above the jet orifice 9. The sump parts 13, 14 are communicated with a bore 12 and a dish shaped particle receiver 15 is fixed to the inner wall of the sump part 13 at an intermediate position dividing said sump 13 into upper and lower two so as to provide a gap from said inner wall. At first, a head 6A is detached to place particles 17 on the receiver 15 and after the matrix alloy 3 apparatus is set and the leading end part of a nozzle is heated to perfectly melt only the alloy 3. In the next step, the jet orifice 9 is allowed to approach to a rotary roll 1 and the molten alloy is injected to the surface thereof by the pressure of Ar-gas. In this case, the alloy 3 is injected to the sump part 13 in a concentrated manner to be collided with the particles 17 which are, in turn, mixed with the alloy 3 under stirring to inject the uniformly dispersed molten alloy 18.

Description

[Detailed Description of the Invention] [Technical Field] The first invention relates to a method for manufacturing an amorphous composite material in which particles of a second phase material such as WC (tungnuten carbide) are dispersed by a quenching method. The second invention relates to an apparatus for manufacturing the same.

[Background technology]

Compositeization of amorphous metals using a particle dispersion method is a new field regarding the strength and magnetic properties of amorphous metals, and the development of new materials in this field is being promoted.

In the production of particle-dispersed amorphous composite materials, the commonly used method is to first prepare a master alloy (Fe) from which an amorphous phase is to be obtained.
, Nt, Co, etc., and B, Si.

Alloyed with metalloid elements such as C2P in a predetermined ratio)
After that, second phase particles such as WC having a predetermined particle size distribution are added, stirred for a short time, and then heated with gas pressure such as inert gas through a nozzle having a round or slit hole at the tip. A particle-dispersed amorphous composite alloy ribbon or wire was obtained by rapidly solidifying the material by spraying it onto the surface of a roll rotating at high speed or the inner peripheral surface of a cylinder containing a water layer.

However, in the production of particle-dispersed amorphous composite materials, it has been extremely difficult to uniformly disperse second-phase particles such as WC without forming a solid solution in the amorphous phase matrix. Ta.

Next, a conventional example of a manufacturing apparatus shown in FIG. 1 will be described. After melting the master alloy 3 in the nozzle 2, the nozzle 2
Second phase particles such as WC having a predetermined particle size distribution are added through a circular tube 7 inserted from above, and after being temporarily stirred in the circular tube 7, the second phase particles are dissolved by a high frequency work coil 4 by self-stirring action. Uniformly disperse the two-phase particles. Next, bring the tip of the nozzle 2 close to the surface of the roll l rotating at high speed,
The molten metal was injected onto the surface of the roll 1 by the gas pressure of argon gas supplied from the flow path 6, and was peeled off by the separator 8 to obtain a particle-dispersed amorphous composite alloy ribbon. 5 is a gauge boat.

However, after adding the second phase particles such as WC and before stirring and spraying, some of the second phase particles.

Alternatively, there is a problem in that all of the particles are solidly dissolved in the molten master alloy matrix, making it difficult to form a uniformly distributed particle-dispersed amorphous composite material.

[Purpose of the invention]

The first object of the invention is to provide a method for producing an amorphous composite material in which second phase particles such as WC can be uniformly dispersed in an amorphous phase matrix without forming a solid solution. A second object of the invention is to provide a manufacturing apparatus suitable for the above manufacturing method.

[Disclosure of the invention]

The method for producing an amorphous composite material according to the first invention includes injecting molten base metal onto particles that have been charged in advance in a restricted space that communicates with a micro-injection orifice. The mixture is injected from the micro injection port while stirring and mixing the molten base metal and the molten base metal, and immediately thereafter, the mixture is rapidly cooled.

Further, the manufacturing apparatus of the second invention includes a temporary storage part (corresponding to the above-mentioned restricted space) for a mixture of particles and molten base metal formed above the micro-injection port in a state communicating with the micro-injection port; a constriction part formed in the upper part of the reservoir part in communication with the reservoir part, a base metal reservoir part formed in the upper part of the constriction part, and a flow path part for supplying injection gas to the reservoir part; and a particle resting part formed within the mixture groove part.

In both the first invention and the second invention, the time required for injecting the molten base metal onto the particles, stirring and mixing them, and then injecting them from the micro-injection orifice is significantly shortened compared to the conventional method. solid solution of particles can be suppressed.

1st. The first embodiment of the second invention is shown in FIGS.
This will be explained based on the diagram. FIGS. 2, 3, and 4 show a vertical front view, a vertical side view, and a bottom view of the nozzle tip. At an appropriate position above the slit-shaped micro-spout 9, the circular pipe 1
A reservoir 14 for the master alloy is formed in the upper part of the drawing 9 part IJ, and a drawing part 1 is formed in the drawing part II.
A reservoir section 3 for temporarily storing a mixture of the master alloy and second phase particles is formed above the micro ejection port 9 at the bottom of the microspout 9 .

The upper and lower reservoir parts 14.13 are the communication holes 1 in the constriction part 1]
It communicates via 2. A dish-shaped particle resting part 15 is provided in the lower reservoir part 13 at an intermediate position between the upper and lower sides and is fixed to the inner wall of the reservoir part 13. Particle loading section 15
(/'i) It is provided with a gap between it and the inner wall of the reservoir J3 so as not to block the circular pipe 10 (see FIG. 4).

The cross-sectional area of the communicating hole J2 of the throttle part 1 is larger than the cross-sectional area of the micro ejection port 9. The high frequency work coil 4 is arranged around upper and lower reservoirs 14.13 at the lower end of the circular tube 10. The circular tube] 0 is inserted into a gauge boat 5 so as to be able to slide vertically, and a head 6A having a supply channel 6 for inert gas (argon gas) is screwed onto the upper end of the gauge boat 5.

The manufacturing process of the particle-dispersed composite alloy ribbon will be explained below.

First, with the head 6A removed, particles 17 such as WC having a predetermined particle size distribution are passed through, for example, another thin circular tube onto the particle stack 15 while being careful not to adhere to the inner walls of the upper and lower reservoirs 14 and 13. (See Figure 5). Next, the master alloy 3 is inserted into the upper reservoir 4, placed on the cooling roll 4 as shown in FIG. 5, and the nozzle tip is heated by the high frequency work coil 4. At this time, the particles 17 such as WC have a very high melting point and remain in a particle form even after the master alloy 3 is completely tilted (1200 to 1300°C), and the melted master alloy 3 is also held in the reservoir 14 by the surface tension buf. is maintained.

After that, the minute injection port 9 at the tip of the nozzle is brought close to the surface of the roll J rotating at high speed, and the molten metal is spread onto the surface of the roll 1 using alcohol gas pressure (see Figure 6).
. At this time, the molten master alloy 3 in the upper reservoir 1414 is intensively injected into the lower reservoir 13 due to the difference in cross-sectional area between the communication hole 12 and the micro jet opening 9, and the molten master alloy 3 is injected onto the particle stack 15. collides with particle 17;

As a result, the particles 17 are pierced into the molten master alloy 3P9 and mixed with vigorous stirring. In other words, the particles 17 are uniformly dispersed and mixed within the molten master alloy 3. Immediately after sowing, the molten metal 18 force τ in which the particles 37 are dispersed and mixed is injected from the slit-shaped micro injection ports 9 onto the surface of the cooling roll 1, which is cooled by the roll 1-A to form a dispersed amorphous metal. The composite alloy ribbon becomes 9 and is peeled off from the roll 1 by the separator 8 (see FIG. 6).

Next, a second embodiment will be explained based on FIGS. 7 to 9. In this case, the particle receiver 157% bottom tray 320 and the peripheral wall part 2
], and is fixed by a joint part 23.23 while being placed in the center of the reservoir J3. The peripheral wall portion 21 has a large number of minute through holes 22 . The total cross-sectional area of these through-holes 22 is smaller than the cross-sectional area of the communicating hole ]2 in the constriction part j], and
is larger than the cross-sectional area of

In this case, the molten master alloy is injected into the lower reservoir 13 by the argon gas pressure, and temporarily stays in a turbulent state in the bottomed cylindrical particle tray 15, and one particle 17 on the tray j5.
The dispersion and mixing becomes more uniform than in the first embodiment.

Moreover, the 150 strength of one particle is higher than that of the first example.

Above 1st. In any of the second embodiments, the molten master alloy 3'c particles J7 are collided with each other in the restraint space (reservoir) 13 to be vigorously stirred and mixed, so that the time from the start of mixing to the external injection is shortened. can be significantly shortened compared to conventional examples, substantially completely preventing solid solution of the particles 7 into the molten master alloy 3, and creating an amorphous composite material in which the particles 17 are uniformly dispersed. can be obtained. Note that the plate-shaped particle placement part 1
A large number of minute through-holes may be formed in 5. Further, instead of the slit-like micro-injection port 9, a round hole or a square hole may be used.

〔Effect of the invention〕

According to the method for manufacturing an amorphous composite material of the first invention, the time from the start of mixing particles in the molten base metal to the external injection is significantly shortened, and solid solution of the particles in the molten base metal is reliably suppressed. This has the effect that it is possible to obtain an amorphous composite material in which particles are mixed in a uniformly distributed state.

Further, the manufacturing apparatus (tC) of the second invention has the advantage that the effects of the manufacturing method of the first invention can be easily and fully exerted with a relatively simple structure.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the conventional example, Fig. 2 is a longitudinal sectional front view of main parts of the first embodiment, Fig. 3 is a longitudinal sectional side view thereof, Fig. 4 is a bottom view thereof, and Figs. 5 and 6. 7 is a longitudinal sectional front view of the main part of the second embodiment, FIG. 8 is a longitudinal sectional side view thereof, and FIG. 9 is a horizontal sectional view. 3... Molten mother alloy (molten mother metal), 6 Injection gas supply channel, 9... Micro injection port, 1]... Throttle part, ]2
...Communication hole, 13.14...Reservoir, 15...Particle placement, J7...Particle Figure 2 Figure 3 Figure 4 So Figure 7 Figure 8 t Figure 9 Procedure amendment ([ 1, Case Description Part 1] 1958 Patent Application No. 155619 2, Title of Invention Method and Apparatus for Manufacturing Amorphous Composite Materials 3, Person Making Amendment Relationship to the Case Applicant 4, Agent 5. Voluntary amendment of date of amendment order (1) Amend the claims in the specification as shown in the attached sheet. (2) Page 5 of the specification, line 9, line 1θ, line 15, line 1
Line 8, page 6, line 3, page 10, line 7, lines 8-9, “
Correct the phrase ``base metal'' to ``base alloy.'' (3) Delete "(molten base metal)" on page 11, line 3 of the specification. 2. Claims (1) In a restricted space communicating with a micro-injection orifice, molten H gold is injected onto the particles charged in advance in this space, whereby these particles and the molten master alloy are combined. A method for producing an amorphous composite material, in which the mixture is injected from the micro injection port while stirring and mixed, and immediately thereafter, the mixture is rapidly cooled. (2) A temporary reservoir for a mixture of particles and molten material formed in the upper part of the micro-injection port in communication with the micro-injection port, and a temporary storage part in communication with the micro-injection port formed in the upper part of this reservoir. An amorphous material comprising a constriction part, a base metal reservoir formed in the upper part of the constriction part, a flow path part for supplying injection gas to this reservoir, and a particle holding part formed in the mixture reservoir. Quality composite material manufacturing equipment. (3) The manufacturing apparatus according to claim (2), wherein the throttle part is formed such that the cross-sectional area of the communication hole therein is larger than the cross-sectional area of the micro-injection port. (4) The manufacturing apparatus according to claim (2), wherein the particle loading portion is dish-shaped. (5) The manufacturing apparatus according to claim (2), wherein the particle loading portion is shaped like a bottomed dish. (6) The manufacturing apparatus according to claim (4) or (5), wherein the particle loading portion has a large number of minute through holes. (7) Claim (6), wherein the total cross-sectional area of the large number of minute through-holes is smaller than the cross-sectional area of the communication hole in the constriction part and larger than the cross-sectional area of the minute injection port. Manufacturing equipment.

Claims (7)

[Claims] (1) In a restricted space communicating with a micro-injection port, all of the molten base metal is injected onto the particles that have been charged into this space in advance, while stirring and mixing these particles and the molten base metal. A method for producing an amorphous composite material, in which the mixture is injected from the micro-injection orifice and immediately thereafter rapidly cooled. (2) A temporary reservoir for a mixture of particles and molten base metal formed in the upper part of the micro-injection orifice in communication with the micro-injection orifice, and a temporary reservoir in communication with the micro-injection A constriction part, a base metal reservoir formed in the upper part of the constriction part, a flow path part for supplying the injection gas to this reservoir, and a particle resting part formed in the mixture reservoir were formed. Manufacturing equipment for amorphous composite materials. (3) The manufacturing apparatus according to claim (2), wherein the throttle part is formed such that the cross-sectional area of the communication hole therein is larger than the cross-sectional area of the micro-injection port. (4) Is the particle placement part shaped like a plate? A manufacturing apparatus according to claim (2). (5) The manufacturing apparatus according to claim (2), wherein the particle loading portion is cylindrical with a bottom. (6) The manufacturing apparatus according to claim (4) or (5), wherein the particle loading portion has a large number of minute through holes. (7) Claim (6), wherein the total F area of the large number of minute through holes is smaller than the cross-sectional area of the communication hole in the constriction part and larger than the cross-sectional area of the minute jet orifice. Manufacturing equipment.