JPS63114926A - Floating type continuous heat treatment device for band-shaped material - Google Patents

Abstract

PURPOSE:To stably float even narrow-width band-shaped materials by disposing plural pieces of slit-shaped nozzles which are long in the transverse direction of the band-shaped materials so as to face the front and rear surfaces of the horizontally moving band-shaped materials to the configuration in which the nozzles are alternately positioned zigzag above and below. CONSTITUTION:An upper sealing plate 2 and a lower sealing plate 3 are disposed in parallel with the nearly horizontally moving band-shaped materials 1a-1f apart at respectively prescribed spacings L, L' from the front and rear surfaces of the band-shaped materials 1a-1f. Plural pieces of the slit-shaped nozzles 4, 6 which are slender in the transverse direction of the band-shaped materials are disposed respectively apart at prescribeds distances M, M' from each other to the respective sealing plates 2, 3. The upper and lower nozzles 4, 6 are disposed alternately zigzag above and below in the longitudinal section. The band-shaped materials 1a-1f float and travel by drawing generally gentle waveforms when gases are blown from the nozzles 4, 6 via pipes 5, 7 to the materials 1a-1f in the above-mentioned constitution.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a continuous heat treatment device for strip material that moves the strip material in a floating state by ejecting gas. This invention relates to a device that can stably levitate even a strip-shaped material.

[Prior Art] An example of an apparatus for continuously heat-treating a strip material by moving it in a floating state to avoid contact knots is the Japanese Patent Publication No. 59-11.
There is one disclosed in Japanese Patent No. 648. However, these conventional flotation heat treatment devices were developed to levitate relatively wide strips, so when it comes to narrow strips of, for example, 20 to 30 meters, the strips shake unnecessarily. There was a problem that the floating state became unstable due to movement.

[Object of the Invention] The present invention aims to solve the above-mentioned problems and provide a continuous heat treatment apparatus that can stably float even narrow strip materials.

[Means for Achieving the Object] In order to achieve the above-mentioned object, the strip material floating continuous heat treatment apparatus of the present invention faces the upper and lower surfaces of the strip material moving approximately horizontally in a manner that is substantially parallel to the top surface and the bottom surface of the strip material at a predetermined distance apart. An upper sealing pressure plate and a lower sealing plate are arranged as shown in FIG. It is characterized by the nozzles being arranged at regular intervals in the longitudinal direction of the strip material so as to be alternately located above and below.

[Example code] Next, one embodiment of the present invention will be described with reference to the drawings.

In the figure, la to 1f have a thickness of 0.25 mm and a width of 25+
o+o metal strips, each strip moving approximately horizontally in the direction of the arrow. Reference numerals 2 and 3 denote an upper sealing plate and a lower sealing plate, which are disposed on the upper and lower surfaces of the strip material so as to face each other at a predetermined distance L' apart and substantially parallel to each other. 4゜4... are slit-shaped nozzles that are long in the width direction of the strip material, and each nozzle protrudes from the lower sealing plate 2 toward the upper surface of the strip materials 1a to 1f, and is spaced at a constant interval M in the longitudinal direction of the strip material. There are multiple pieces placed apart from each other. 5, 5, . . . are pipes that supply gas to the nozzles 4, 4, . 6, 6... are slit-shaped nozzles that are also long in the width direction of the strip material, and each nozzle protrudes from the lower sealing plate 3 toward the lower surface of the strip materials 18 to 1f at regular intervals M in the longitudinal direction of the strip material. There are multiple pieces arranged with ′ separated. 7,7... is this nozzle 6.6...
This is a pipe that supplies gas to the And nozzle 4゜4・
. . . and nozzles 6, 6, .

Heating gas or cooling gas is fed under pressure to the nozzles 4, 4, . . . , 6, 6, .

Since the nozzles 4.4... are slit-shaped, the gas blown out from these forms a gas curtain and spreads over the strips 1a to 1f.
However, the blown gas that passes through the spaces between the strips 1a to 1f downwardly hits the lower sealing plate 3 and is reversed, as shown in FIG.

On the other hand, the gas blown out from the nozzles 6, 6, . The blown gas hits the upper sealing plate 2 and is reversed. In this way, the gas flow reversed upon hitting the upper sealing plate 2 and the lower sealing plate 3 has some important effect, and the strip material 1a
Stabilize the levitation support state of ~1f. In addition, the strip material 1a
~1f are nozzles 4, 4, . . . as shown in FIG.
, 6゜6, etc. are positioned alternately above and below, so the parts that are directly hit by the blown gas are curved and are conveyed in a gentle waveform as a whole, so this configuration prevents twisting of each of the strips. prevent and further stabilize buoyancy support.

[Effects of the Invention] As described in the embodiments above, according to the present invention, by providing the upper sealing plate and the lower sealing plate and by arranging the nozzles vertically and alternately, narrow strip-shaped materials can be However, since stable levitation has become possible, continuous heat treatment without contact can be applied over a wide range without being limited by the width of the band.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. FIG. 3 is a sectional view taken along the line B--B in FIG. 2. 1a-1f...Band material, 2...Upper sealing plate, 3
... Lower sealing plate, 4, 6... Nozzle.

Claims (1)

[Claims] An upper sealing plate and a lower sealing plate are arranged so as to face each other substantially parallel to each other at a predetermined distance from the upper and lower surfaces of the strip material that moves approximately horizontally. A plurality of slit-shaped nozzles that are long in the width direction of the strip, each protruding toward the upper and lower surfaces of the strip, are arranged at regular intervals in the longitudinal direction of the strip so that they are alternately positioned above and below. Features: Floating continuous heat treatment equipment for strip material.