JP4352411B2 - Coloring method of stainless steel wire and coloring device decoration structure - Google Patents

Description

  The present invention relates to a coloring method and a coloring device for a stainless steel wire, and more particularly to a method and a device capable of vividly coloring a surface of a stainless steel wire with various color tones by tempering.

Conventionally, it has been known that when an oxide film is formed by heating the surface of stainless steel, an interference color, that is, a temper color is exhibited depending on the thickness of the film.
However, it is difficult to develop the desired color tone with high reproducibility and evenness, and the colors that have been successfully developed are limited to black, bronze, brown, blue, and so on. As tempering was not adopted.

By the way, wire mesh has been widely used as a functional material for general industries such as kitchenware and drainage equipment, not only for general industrial use, but new applications are required for further production expansion. ing.
For this reason, use for decorative purposes is also considered, but in that case, if the wire mesh can be colored with a desired color tone, the width of the design should be widened.
For example, recently, the light interference pattern created by superimposing a plurality of wire meshes, that is, the interest of the moire pattern, has attracted attention, but if the color tone is different, the moire pattern of the same design has a completely different taste, A wide variety of moire patterns can be created by using wire mesh sheets woven by combining wire rods of various colors.
In the case of interference colors, various and subtle color tones can be expressed. Therefore, considering the use as the above-described decoration material, color development by tempering is a preferable coloring method.

  Therefore, in order to solve the above-mentioned problems, the present invention provides an improved tempering process capable of coloring the surface of a stainless steel wire in a desired color tone with high reproducibility and without unevenness without requiring a complicated process or apparatus. It is an object of the present invention to provide a color development method and apparatus.

  The invention according to claim 1 is a method of developing a color by passing a stainless steel wire through a heated oxidizing gas atmosphere to form an oxide film on the surface of the wire, and the oxygen gas concentration in the atmosphere is uniform. And adjusting the oxygen concentration in the atmosphere, the temperature of the atmosphere, and the transfer speed of the wire to adjust the thickness of the film to form oxide films of various thicknesses. It is.

  The invention of claim 2 is the method for coloring a stainless steel wire according to claim 1, wherein the concentration of oxygen gas in the atmosphere is controlled by ejecting an inert gas as a swirling flow into the atmosphere for adjusting the oxygen concentration. It is a method for coloring a stainless steel wire, characterized by being adjusted to be uniform.

  The invention according to claim 3 is a cylindrical heater whose both ends in the longitudinal direction are opened as an inlet and an outlet, a wire rod transfer means for transferring a stainless steel wire rod and passing through the heater, and an inlet side into the heater. An inert gas introducing means for introducing an inert gas, a gas concentration uniformizing means for equalizing the concentration of oxygen gas in the heater, and an oxygen concentration for adjusting the oxygen concentration by adjusting the amount of inert gas introduced A stainless steel wire coloring device comprising: an adjusting means; a temperature adjusting means for adjusting a heater temperature; and a transfer speed adjusting means for adjusting a transfer speed of the wire.

  According to a fourth aspect of the present invention, in the stainless steel wire coloring device according to the third aspect, the gas concentration equalizing means comprises an inert gas jetting means for jetting an inert gas into the heater as a swirling flow. A color developing device for a stainless steel wire.

  A fifth aspect of the present invention is a wire mesh made of a stainless steel wire colored by the method according to the first or second aspect.

  According to a sixth aspect of the present invention, there is provided a decorative structure that includes at least a part of a light interference portion in which a plurality of wire mesh sheets are stacked, and a moire pattern emerges when light hits the light interference portion. The wire mesh is a decorative structure characterized in that it is constituted by the structure described in claim 5.

According to the method for coloring a stainless steel wire according to the present invention, the surface of the stainless steel wire can be colored with various colors with high reproducibility without requiring a complicated process.
In addition, the stainless steel wire coloring device of the present invention can color the surface of a stainless steel wire with various colors and high reproducibility, while having a simple configuration.

FIG. 1 shows a color developing device 1 for a stainless steel wire according to an embodiment of the present invention.
The coloring device 1 is a so-called heat treatment device for coloring the surface of the stainless steel wire (S) as a temper color by so-called tempering.
Reference numeral 3 denotes a cylindrical heat-insulating heater main body. The heater main body 3 has an outer diameter of 380 mm, an inner diameter of 70 mm, and a volume of a hollow inner space of 500 L.
A quartz tube 5 is inserted in the inner space of the heater body 3 in the longitudinal direction. Both side ends of the quartz tube 5 protrude through the heater 3, one end being a heater inlet 7 and the other end being a heater outlet 9. The volume of the internal space of the quartz tube 5 is 1.5L.

Reference numeral 11 denotes a heating wire, and the heating wire 11 is spirally wound around the quartz tube 5. The heating wire 11 is connected to a thyristor power supply device 13. The thyristor power supply device 13 adjusts the output to the heating wire 11 using an electrical signal from a temperature controller (TIC) 15, and can achieve a desired heating temperature automatically and with high accuracy. The temperature sensing element 16 of the temperature controller 15 is disposed outside the quartz tube 5.
This thyristor power supply device 13 (input power: 220 V compatible) can be heated to 400 ° C. to 700 ° C.
The heater body 3, the quartz tube 5, the heater inlet 7, the heater outlet 9, the heating wire 11, and the power supply device 13 constitute a heater, and the temperature regulator 15 constitutes a temperature adjusting means. .

Reference numeral 17 denotes a nitrogen (N ₂ ) gas supply pipe. One end of the nitrogen gas supply pipe 17 is connected to a nitrogen gas cylinder 19 as a nitrogen gas supply source, and a nitrogen gas inlet 18 as the other end. Passes through the quartz tube 5. The nitrogen gas inlet 18 blows out nitrogen gas toward the tangential direction of the inner peripheral wall substantially perpendicular to the axial direction of the quartz tube 5 and toward the outlet 9. Therefore, a swirl flow toward the outlet 9 side while swirling in the quartz tube 5 is formed in the quartz tube 5 by the ejected nitrogen gas, as indicated by arrows in FIGS. 2 (1) and 2 (2). Is done. Although the specific gravity of nitrogen gas is slightly lighter than that of oxygen gas, the oxygen gas present in the quartz tube 5 is also lifted up by the swirling flow, so that the oxygen gas is distributed substantially uniformly in the quartz tube 5. Will do. The nitrogen gas inlet 18 constitutes a gas concentration uniformizing means.

Reference numeral 21 indicates a regulator (valve), and reference numeral 23 indicates a flow meter. While reading the flow rate with the flow meter 23, the opening and closing of the regulator 21 is finely adjusted manually so that an accurate flow rate of nitrogen gas can be introduced into the quartz tube 5 from the inlet 7 side.
The nitrogen gas supply pipe 17, the nitrogen cylinder 19, and the regulator 21 constitute an inert gas introduction unit.
The amount of nitrogen gas introduced is adjusted by the regulator 21 and the flow meter 23. As a result, the oxygen concentration in the quartz tube 5 is adjusted, and these constitute oxygen concentration adjusting means.

  Reference numeral 25 denotes a pre-heater, and the pre-heater 25 is provided in a path in the middle of the nitrogen gas supply pipe 17. Nitrogen gas preheated by the preheater 25 is introduced into the quartz tube 5. Preferably, the heating temperature of the heater body 3 is the same. By introducing nitrogen gas that has been heated in advance into the quartz tube 5, fluctuations in the temperature gradient in the quartz tube 5 due to the introduction of the nitrogen gas can be suppressed.

Reference numerals 27 and 28 denote guides (conveyors), and the guides 27 and 28 are provided to face the heater inlet 7 side and the outlet 9 side, respectively.
Reference numeral 29 denotes a supply reel, and a wire before tempering is wound around the supply reel 29. Reference numeral 31 denotes a take-up reel, and the wire after the temper treatment is wound around the take-up reel 31 after it is sufficiently cooled by air during transfer.
Reference numeral 33 denotes a motor, and a take-up reel 31 is connected to a rotating shaft of the motor 33. The motor 33 is controlled by an inverter. The output of the motor 33 is about 0.2 kW, and the input voltage of the inverter power supply 35 is about 220V.

When the motor 33 is driven, the take-up reel 31 rotates to feed the wire (S) from the feed reel 29, and is placed on the guide 27 and transferred according to the direction of the arrow, and the quartz tube 5 in the heater body 3 is transferred. It enters inside, comes out after being heated, is placed on the guide 27 again, is transported while being cooled, and is finally taken up by the take-up reel 31.
Reference numeral 37 denotes a traverse device, and the traverse device 37 adjusts the vertical winding position of the wire (S). Therefore, the rows and layers in the winding of the wire (S) are neatly aligned.
The guide 27, the supply reel 29, the take-up reel 31, the motor 33, and the inverter power source 35 constitute a wire rod transfer means.
Further, the controller (not shown) of the inverter power supply 35 constitutes a transfer speed adjusting means.

  Various materials such as SUS304 and 430 can be used as the material for the stainless steel wire (S). Moreover, as long as the diameter (φ) of the wire is a commercially available wire, any wire such as 0.29 mm or 2.5 mm can be used.

When the wire (S) is heat-treated, that is, tempered using the color developing device 1 having the above configuration, the concentration of oxygen gas in the oxidizing gas (air and nitrogen gas) filling the quartz tube 5 is made uniform. Since the low-temperature wire (S) is transferred to the wire, the oxide film of the desired thickness can be uniformly formed by adjusting the three parameters of the heater temperature, the amount of nitrogen introduced, and the transfer speed of the wire (S). S) can be formed on the surface.
Therefore, when the temper treatment is performed using the color developing device 1, the surface of the stainless steel wire can be vividly colored with various colors from yellow to red.
In addition, conditions, such as oxygen concentration, may be changed during the transfer of the wire (S). By doing so, it is also possible to develop the surface of one wire (S) with a plurality of types of colors such as the seven colors of the rainbow.

Next, according to FIG. 3 and FIG. 4, a lighting shade 51 (decorative structure) in the hallway using a wire mesh constructed by weaving the colored stainless steel wire material as described above is shown.
The illumination shade 51 is attached to the lower side of the illumination lamp 55 attached to the wall surface 53 of the hallway. The illumination shade 51 extends obliquely upward from the wall surface 53, and the light emitted from the illumination lamp 55 enters the human eye through the illumination shade 51.

Next, the structure of the illumination shade 51 will be described.
As shown in FIG. 3, on the upper surface of the milky white acrylic plate 57, an embossed wire netting sheet 59 in which a wire material that is colored purple and a silver wire of a ground color is plain woven and further uneven is formed by embossing is attached. ing.
Further, on the lower surface of the acrylic plate 57, a plain wire netting sheet 61 in which a wire colored in purple and a silver wire of ground color is plain woven is attached. The plain metal sheet 61 is attached along the lower surface of the acrylic plate 57, and is further folded back on the upper surface side so as to wrap the edge portion of the acrylic plate 57.
Reference numeral 63 denotes a transparent cover sheet, and the upper plain metal mesh sheet 61 is covered by the cover sheet 63.
Each of the wire mesh sheets 59 and 61 has an opening of about 40 mesh.

When the illumination lamp 55 is turned on, the light emitted from the illumination lamp 55 passes through the upper embossed wire mesh sheet 59, then passes through the lower plain wire mesh sheet 61, and is emitted outside the illumination shade 51. Eventually enters human eyes.
Since the metal mesh sheets 59 and 61 both have a regular geometric pattern, the moire as shown in FIG. 4 is generated by the light that has passed through the space in which the two metal mesh sheets 59 and 61 are stacked. The pattern (M) emerges and becomes a fantastic space.
Moreover, since the wire mesh sheets 59 and 61 are made of woven silver wire and purple wire, the wire mesh sheets 59 and 61 look like a pink gold color to human eyes and have succeeded in producing a good comfort.

Although the embodiments of the present invention have been described above, the specific configuration of the present invention is not limited to the above embodiments, and even if there is a design change within the scope of the present invention. It is included in the present invention.
For example, when the amount of nitrogen gas introduced is small, the inlet may be configured in the form of a nozzle to increase the jetting speed, thereby promoting the formation of a swirling flow and making the oxygen concentration uniform.
In the case of coloring the wire mesh, it is theoretically possible to perform temper treatment after weaving the wire mesh, but it is preferable to color the wire mesh because it is less noticeable even if color unevenness appears. .

When the color development apparatus 1 according to the above embodiment was used to develop the color of the surface of the wire, the color development was as follows.
The nitrogen gas introduced into the quartz tube 5 by the preheater 25 was heated to 350 ° C.

  As a way of looking at the table, there are one in which one fixed value is described for three parameters of the heater temperature, the amount of nitrogen introduced, and the transfer speed of the wire, and another in which a certain range is described. This means that by setting two parameters with fixed values and setting the remaining one parameter with an arbitrary value in the above-described range, it is possible to develop colors with various subtle tones. For example, for wire A, the amount of nitrogen introduced and the wire transfer rate are set at their fixed values, and when the heater temperature is set at a lower value in the range of 400 to 500 ° C., a color close to platinum is developed, When it was set at the higher value, it swears on brass and turns yellow. For wire B, the heater temperature and wire transfer speed are set as fixed values, and the amount of nitrogen introduced is set at the lower value of 0.3 to 0.75 L / min, as in mahogany. Colored in a light brown color, and when set at the higher speed, the color developed in a light brown bronze.

According to the color development method and color development apparatus of the present invention, the surface of a stainless steel wire can be colored with a desired color tone. Moreover, since the colored wire does not rust or peel off outdoors, it has high durability. Furthermore, in the past, when coloring light, for example, an orange color was obtained with a sodium lamp, but by coloring the material itself with a temper color, the light can be colored even when a low-energy fluorescent lamp is used. As a result, energy consumption can be reduced.
Therefore, a wire mesh woven from a wire colored by the method of the present invention is promising as a decorative material.

It is a schematic diagram of the color development apparatus of the stainless steel wire material which concerns on embodiment of this invention. The flow direction of the gas in the quartz tube of the coloring device of FIG. 1 is shown. It is a side view of the shade for illumination using the wire-mesh sheet | seat woven with the wire colored by the coloring method using the apparatus of FIG. It is a figure which shows the state which looked at the shade for illumination of FIG. 3 from the bottom.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stainless steel wire coloring device 3 Heater main body 5 Quartz tube 7 Heater inlet 9 Heater outlet 11 Heating wire 13 Thyristor power supply device 15 Temperature controller 16 Temperature sensing element 17 Nitrogen gas supply pipe 18 Nitrogen gas inlet 19 Nitrogen gas cylinder 21 Regulator 23 Flow meter 25 Pre-heater 27, 28 Guide 29 Feeding reel 31 Take-up reel 33 Motor 35 Inverter power supply 37 Traverse device S Stainless steel wire 51 Lighting shoe 53 Wall surface 55 Lighting lamp 57 Acrylic plate 59 Embossed wire mesh sheet 61 Plain wire mesh Sheet 63 Cover sheet M Moire pattern

Claims (6)

  In a method of developing a color by passing a stainless steel wire through a heated oxidizing gas atmosphere and forming an oxide film on the surface of the wire, while adjusting the concentration of oxygen gas in the atmosphere to be uniform, A method for coloring a stainless steel wire material, comprising adjusting the oxygen concentration in the atmosphere, the temperature of the atmosphere, and the transfer speed of the wire material to form oxide films of various thicknesses.   The method for coloring a stainless steel wire according to claim 1, wherein the concentration of oxygen gas in the atmosphere is adjusted to be uniform by ejecting the inert gas as a swirling flow into the atmosphere for adjusting the oxygen concentration. A method for coloring a stainless steel wire, characterized by comprising:   Cylindrical heaters whose both ends in the longitudinal direction are opened as inlets and outlets, wire material transfer means for transferring stainless steel wire material and passing through the heater, and inert gas introduced into the heater from the inlet side An active gas introducing means, a gas concentration uniformizing means for equalizing the concentration of oxygen gas in the heater, an oxygen concentration adjusting means for adjusting the oxygen concentration by adjusting the amount of inert gas introduced, and a heater temperature. A stainless steel wire coloring device, comprising temperature adjusting means for adjusting and transfer speed adjusting means for adjusting a transfer speed of the wire.   4. The stainless steel wire coloring device according to claim 3, wherein the gas concentration equalizing means comprises an inert gas jetting means for jetting an inert gas into the heater as a swirling flow. Wire coloring device.   A wire mesh comprising a stainless steel wire colored by the method according to claim 1.   In a decorative structure that includes at least a portion of a light interference portion in which a plurality of wire mesh sheets are arranged to overlap each other, and a moiré pattern emerges when light hits the light interference portion, at least one wire mesh is defined in claim 5. A decorative structure characterized in that it is composed of the description.

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