JPS62210067A - Lower temperature thermal spraying device of double ejector system for metal - Google Patents

Abstract

PURPOSE:To make particles cooler and to obtain a thick film by enclosing the outside periphery of the arc melt in the hollow part of circular conical gaseous flow with circular conical high-pressure injection gaseous flow and further a divergent control pipe having large gas inflow holes. CONSTITUTION:The outside periphery in the melting part of the arc 23 in the hollow part of the circular conical gaseous flow ejected from annular injection port 5 at the axial center of a thermal spraying cylinder 1 is enclosed by the circular conical high-pressure injection gaseous flow 31 and further the outside periphery thereof is enclosed by the divergent control pipe 51 having plural pieces of the atm inflow holes so as to be coaxial with the front face of the cylinder 1. A large amt. of the atm is then sucked into the cylinder by an ejector effect and is further joined with the injection gaseous flow at a confluent point 20 to form the narrow-angle gaseous flow of a high pressure and high speed which is radiated forward from a control pipe 50. The metallic particles are then passed through the low-temp. gas at a high density and a thick film is obtd.

Description

[Detailed Description of the Invention] The conventional melt 1.1 method is a thermal spraying machine that conforms to the definition of mikashi in a geocentric theory, and the degree of accumulation in that thermal spraying machine is extremely large, with only a small θ/ It has been a reality for more than 70 years since its inception that it has not been possible to obtain a two-thick planar film without distortion, and as a result, there are many qualitative and other problems, and there are many restrictions on its use.

Apart from the above apparent theory, Patent No. 673 invents a rational method according to natural science based on the heliocentric theory and plans to put it into practical use.
/,? 2 and Patent No.
We are working to improve the performance of this new thermal spraying equipment.

A single point on a rigid metal surface using various metal spraying machines with vertical lead wire.
If concentrated thermal spraying is carried out, a spray molded product in the shape of Mt. Fuji will be obtained. This sprayed material is not unusual and represents various phenomena.

FIG. 7 is a quarter paraboloid and two types of sectional views of this molded product. fAl is the one using the thermal spray fik of the above patent and is adhered to the target object (sy>) without distortion, and B in the figure shows the one using the conventional thermal spraying machine, and the shape collapses due to severe strain force. It shows the state of being naturally separated from the target.

Spraying that uses the expansion power of gas is explosive and extremely high velocity when the gas (air) is ejected, but expansion is always at work, and one manifestation of this is the spreading phenomenon. This sudden decrease in velocity and atmospheric pressure is inversely proportional to the spread angle. Compared to this gas, metal particles are gigantic particles, and their initial velocity gives them a strong tendency to travel straight in one direction like a bullet. is fast, passing through the center of the air currents in a swarm. In the case of the device of this invention, the residual heat of the particles is used to humidify the air, but the temperature in the outer peripheral zone is low, and the air is agitated in the axial center zone. Therefore, there is a considerable cooling effect even if there is a control effect on the widening phenomenon7.
It is P1. This heat distribution is shown in Table 1 using the shading shown in FIG. 2, and this shading also corresponds to the particle distribution degree of 1, which also corresponds to the shape of Mt. Fuji in FIG. FIG. 3 shows the above-mentioned elucidation 1. Therefore, by using the wide-ended control tube (JO) in one more multiplex, an unexpectedly large effect has been achieved. One end of this control tube (Jθ) is a thermal spray tube (A) with a unique annular injection port (/, S') in front of the +III core. The compressed air sent from the compressed air supply pipe of It forms a conical shape (Otsu 0), and its base is open and connected to the atmosphere, and the air of the Okawa is inhaled by the ejector action from the arrow (6 O) through the center of the sprayed fM Ml, and this air is absorbed by the jet airflow from the confluence point (!θ) and becomes an increased airflow, forming a high-pressure, high-velocity, narrow-angle airflow that flows through the control pipe (!θ).
50) Emit to the front outside the tube. When the airflow at the most intense gathering point (!0) of the jet airflow tries to break out of the tube in a straight line, it shows a phenomenon in which the airflow spreads out from the outer periphery and appears to have countless protrusions. The peculiar tendencies of gases, such as heat exchange, are the most intense in their behavior, such as entrainment, mixing, and agitation of gases in contact with themselves. The ejector field is revealed, and a large number of ventilation holes (j/)
The atmosphere is drawn in and becomes a turbulent flow with the jet airflow, which is packed into the tube and advances with huge acceleration, creating an annular heat distribution +C
) collapses, and the metal particles pass through a dense, low-temperature gas close to atmospheric temperature, resulting in an effective cooling effect.

In order to achieve all 11 objectives of this invention, multiple conditions had to be met. The first is the least heat l.
It was necessary to melt the sprayed metal.

X As shown in Figure 3, a single shellfish is placed in a low-pressure atmosphere and the heat is utilized. There is an effect that requires less than the amount of electricity used by other people. (Comparison with a direct inkstone using a meter) Gas type is 75 minutes / (Comparison of gas and electric charges)! , The entire area of low pressure is rationally obtained, and its ejector action causes it to be inhaled into the Okawa atmosphere or jet stream, which has an enlargement effect. ! 0-30
There is an effect "3" of increasing the wind pressure applied to the object or palm in the t''nQ direction and lowering the temperature.

3 When alternating current power is used in the thermal spraying machine, the thermal expansion noise of each bee is a quiet effect, unlike the roar of a jet plane.

H) It emits intense ultraviolet rays proportional to the noise level, but the effect is that sunglasses are sufficient without causing skin burns or eye damage [J].

5. The diverging control pipe (50) is installed inside the conical airflow (Otsu0), in addition to the intake air, between the outside of this and the inner wall of the control pipe.

If the city gas is natural gas, the gas and air mixing pipe called the damper of the range is also based on this same principle, and complete combustion is calculated for air at 715 times the rate of gas l/l. As shown in the figure, even in the case of low-pressure gas, this value is achieved, and complete combustion can be carried out without any trouble or danger. In this way, the mixing of a huge amount of air dilutes the airflow temperature inside the pipe and the high airflow density doubles the cooling power, resulting in the highest cooling effect.

The narrowing of the wave irradiation area by the control tube that spreads out at the end causes the waves to concentrate on the main part of the irradiated surface, greatly improving the yield.

This is a possibility unique to the final law, and its effect is "7".

Second, the small spherical particles that had just been melted in the cold air diluted by the extraordinarily large Okawa atmosphere into the injected air, which had little heat input, were formed into a bag frame with gas, and at the same time, the volume specific surface area suddenly increased. The fragmented particles of ``Kasakakuyuki'' are metal particles of an as yet unknown form that do not have the time required for the surface tension process to return to spheroidization after forming into a bag frame, and are rapidly cooled to solidification and forget their roundness. 〉 discovery effect becomes “♂”. Since the structure, nature, action, location, origin, and usage of these particles are unknown, it seems that the geocentric theory could not be chosen.Therefore, the effect of the heliocentric explanation is ``wa''. This is the key to the present invention and has a ripple effect of "10" on amorphous metal powder.

7 The plasticity of snow, which belongs to the same physical phenomenon as ice, which is supposed to have no plasticity, is due to the change in its structure. If it is a metal with the same structure as this, the particle phase ri or even if the impact force of the breathing force from one side is applied, the phase H7, (1) The intertwining and entanglement is due to the difference in specific gravity and degree of plasticity. The rough surface structure of the resulting film is ideal for Rl: 4-point effect r/, 2J, and the adhesion is also a perfect effect "//". Figure 1 proves the adhesion strength of a target object because it is difficult to clean, so the bonding force in that spot is extremely weak, and dots and avatars appear in the cutting process, resulting in no finished product.

The difference is /vs/, 5, and therefore the increase in zinc! ~
The loss was about 75 times that of this device, which is consistent with the odor of flame spraying at thermal spraying sites. The effect of "/3" is large.

This device is smaller compared to foreign-made electric and gas types.
The Tt fit is about 3 minutes, the thermal spraying speed is the same or better, and the operability is good.

As mentioned above, this device is now capable of producing a thick film, making it possible to make molds for plastics into practical use by replicating wood molds, wax molds, stone (moulds, wood stones, skin, etc.) with high precision. In this case, the use of mold release agents is taught.The improvement of mold release agents and thermal spraying machines is an urgent task for the mold industry that supports Taishaka Industries, and the effect of its predecessors is ``15''. are large and heavy.In this way, the basic technology has finally been obtained in the 50 years since the discovery of special particles, and the low-temperature metal thermal spraying equipment with one double ejector,

[Brief explanation of drawings]

Figure 1 shows the jet angle of the jet airflow of an electric wire thermal spray machine and the deposition state of the jetted metal particles in a longitudinal cross-sectional view, and Figure 2 shows the airflow axis at the time when the airflow shown in Figure 1 arrives on the target surface. The heat distribution of is represented by colored shading. FIG. 3 is a longitudinal sectional view showing the thermal spraying apparatus of the present invention in an operating state.

Claims (1)

[Claims] 1. In the hollow part of the conical airflow ejected from the annular injection port at the axis of the thermal spray cylinder, the conical high-pressure jet airflow covers the outer periphery of the two metal wires that continue to arc melt while coming close to each other. A double ejector-type low-temperature metal thermal spraying device characterized by a thermal spraying section configuration in which a diverging control tube with a plurality of atmospheric air inflow holes is provided coaxially on the front side of the thermal spraying tube in the area surrounding the outer periphery of the tube. . 2. Claims characterized by a configuration in which a diverging control pipe of arbitrary length and thickness with a plurality of air inlet holes is provided coaxially and interchangeably at the front end of a thermal spray tube having an annular injection port as its axis. 2. The double ejector type low-temperature metal thermal spraying apparatus according to item 1. 3. A mechanism for feeding the metal wire for thermal spraying to the melting zone, and a thermal spraying cylinder having an annular injection port on the front axis with a divergent control tube coaxially provided at the front end that interlocks with this mechanism can be combined in any form. A double ejector type low-temperature metal thermal spraying apparatus according to claims 1 and 2.