JP2011104616A - Deformed bar steel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow the steel grade and the diameter of bar steel to be discriminated easily. <P>SOLUTION: The peripheral surface of the deformed bar steel 10 has a plurality of display regions 14A arranged along the axial line of the deformed bar steel 10. On each display region 14A, a steel grade discrimination mark 15A composed of a paint producing a color corresponding to the steel grade and a diameter discrimination mark 16A composed of a paint producing a color corresponding to the diameter are put. These steel grade discrimination mark 15A and the diameter identification mark 16A are different in at least one of a shape, a number, dimensions and an angle to the deformed bar steel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a deformed steel bar having a mark for identifying a steel type and a diameter.

  In construction sites, deformed steel bars having different diameters and steel types (mechanical properties such as tensile strength) are used depending on the bar arrangement location. In particular, since the steel type cannot be identified by looking at the steel bar, the JIS standard requires that a steel type identification mark be attached to the steel bar in order to eliminate misalignment of the steel bar. Specifically, paint of a different color for each steel type is applied to one end surface of the steel bar, or concave or convex marks different for each steel type are engraved on the peripheral surface of the steel bar at equal intervals in the axial direction by a rolling roll. .

  As described above, the steel standard identification mark is required in the JIS standard, but it is also required to identify the diameter of the steel bar at a glance at the construction site. In order to satisfy this requirement, in Patent Document 1, a steel type identification mark and a diameter identification mark are engraved on the peripheral surface of the steel bar by rolling. In Patent Document 2, symbols such as alphanumeric characters for identifying the steel type and diameter are displayed by inkjet.

Utility Model Registration No. 31131503 Japanese Patent No. 4264591

  The marks and symbols disclosed in Patent Documents 1 and 2 are difficult to see when separated from the steel bar at the construction site, and the steel type and diameter cannot be clearly identified at a glance. In addition, the coloring of the end face of the steel bar specified by the JIS standard cannot display the diameter only by displaying the steel type, and the direction of viewing is limited, so it is troublesome to identify the steel type.

The present invention is made in order to solve the above-mentioned problem, and in a deformed steel bar, a steel type identification mark made of a paint exhibiting a color corresponding to the steel type and a paint exhibiting a color corresponding to the diameter on the peripheral surface thereof. And a diameter identification mark.
According to this configuration, since the mark for identifying the steel type and diameter by color is attached to the peripheral surface of the deformed bar steel, the steel type and diameter of the deformed bar steel can be identified at a glance.

Preferably, the peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, and the steel type identification mark and the diameter identification mark are attached to each display area. The identification marks differ in at least one of shape, number, size, and angle to the deformed steel bar.
According to this configuration, since the steel type identification mark and the diameter identification mark can be identified in each display region, it is possible to prevent both from being confused and misidentifying the steel type and the diameter. Further, since there are a plurality of display areas, even if the deformed bar is cut at the factory or construction site, the display area remains on the deformed bar, and the steel type and diameter can be identified.

Preferably, the steel type identification mark and the diameter identification mark are different in at least one of shape, number, dimension, and angle with respect to the deformed steel bar, and at least one of the steel type identification mark and the diameter identification mark is a deformed steel bar. It extends continuously and long along the axial direction.
According to this configuration, the steel type or diameter can be easily identified by the continuous marks. Moreover, even if it cuts a steel bar, a mark is left on both steel bars.

Preferably, the peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, and the steel type identification mark and the diameter identification mark are attached to each display area. The color identification mark exhibits a color selected from the second color group, and the first color group and the second color group do not include the same color.
According to this configuration, since the steel type and diameter identification marks can be identified by color, it is possible to prevent them from being confused and misidentifying the steel type and diameter. Further, since there are a plurality of display areas, even if the deformed bar is cut at the factory or construction site, the display area remains on the deformed bar, and the steel type and diameter can be identified.

Preferably, the peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, and the steel type identification mark and the diameter identification mark are attached to each display area. Selected from the color group, the diameter identification mark represents the color selected from the second color group, and one specific color is commonly used in the first color group and the second color group Other colors are different from each other.
According to this configuration, since the steel type and diameter identification marks can be identified by color, it is possible to prevent them from being confused and misidentifying the steel type and diameter. In the first color group and the second color group, since one specific color is used in common, it is easy to select a color. If the steel type identification mark and the diameter identification mark are accidentally expressed in one specific color, there is no need to identify both marks, so there is no inconvenience in recognizing the steel type and diameter.
Further, since there are a plurality of display areas, even if the deformed bar is cut at the factory or construction site, the display area remains on the deformed bar, and the steel type and diameter can be identified.

Preferably, the steel type identification mark and the diameter identification mark can be identified by the distance from the end of the deformed steel bar.
According to this configuration, it is possible to prevent the steel type and the diameter from being confused by misidentifying the steel type and the diameter.

In another aspect of the present invention, in the joint for connecting the deformed steel bars, a diameter identification mark indicating the diameter of the deformed steel bar to be connected is attached to each peripheral surface of the left and right steel bar connecting portions. , Characterized in that it is made of the same color paint as the diameter identification mark attached to the deformed steel bar to be connected.
According to this structure, it can be easily confirmed whether or not it is a deformed steel bar having a diameter to be connected to the steel bar connecting portion of the joint, in other words, whether or not it is a joint capable of connecting the deformed steel bar.

Preferably, a steel type identification mark indicating a steel type of a deformed steel bar to be connected is attached to each peripheral surface of the left and right steel bar connecting portions, and this steel type identification mark is a steel type identification mark attached to the deformed steel bar to be connected. Made of the same color paint.
According to this configuration, the steel type of the deformed steel bar can be confirmed even in the joint.

  According to the present invention, the steel types and diameters of deformed steel bars can be identified at a glance.

The deformed steel bar according to the first embodiment of the present invention is shown, (A) is a side view, and (B) is an end view as seen from the axial direction. It is a side view of the deformed steel bar which shows 2nd Embodiment of this invention. It is a side view of the deformed steel bar which shows 3rd Embodiment of this invention. It is a side view of the deformed steel bar which shows 4th Embodiment of this invention. It is a side view of the deformed steel bar which shows 5th Embodiment of this invention. It is a side view of the deformed steel bar which shows 6th Embodiment of this invention. It is a side view of the deformed steel bar which shows 7th Embodiment of this invention. It is a side view of the deformed steel bar which shows 8th Embodiment of this invention. It is a side view of the deformed steel bar which shows 9th Embodiment of this invention. It is a side view of the deformed steel bar which shows 10th Embodiment of this invention. It is a side view of the deformed steel bar which shows 11th Embodiment of this invention. It is a side view of the deformed steel bar which shows 12th Embodiment of this invention. It is a side view which shows the deformed steel bar and joint concerning this invention.

  The deformed steel bar according to the first embodiment of the present invention will be described below with reference to FIG. In the deformed steel bar 10 shown in the figure, a pair of regions opposed to each other in the radial direction of the peripheral surface is a screw portion 11, and a region between the pair of screw portions 11 is a surface portion 12 (hereinafter referred to as “this”). The surface portion is referred to as a flat portion). In the screw portion 11, screw nodes 11a formed in the rolling process are formed at equal intervals.

  In the first embodiment shown in FIG. 1, the steel bar 10 has a large number (a plurality) of display areas 14A at equal intervals in the axial direction. For example, the display area 14 </ b> A includes the one flat portion 11 and has an angle range Θ of 90 ° to 180 °.

  In each display area 14 </ b> A, a steel type identification mark 15 </ b> A and a diameter identification mark 16 </ b> A are formed at intervals in the axial direction of the steel bar 10. The steel type identification mark 15A is configured by applying a paint exhibiting a color corresponding to the steel type of the steel bar 10, and the diameter identification mark 16A is configured by applying a paint exhibiting a color corresponding to the diameter of the steel bar 10. Although the circumferential dimensions of the marks 15A and 16A are equal, the width (dimension in the axial direction of the steel bar 10) is larger in the steel type identification mark 15A than the diameter identification mark 16A, and the steel type identification mark 15A and the diameter identification mark 16A can be identified.

Examples of the first color group used for the steel type identification mark 15A are as follows.
SD295A is colorless (in other words, no mark 15A), SD295B is “white”, SD345 is “yellow”, SD390 is “green”, SD490 is “blue”, USD590A is “yellowish green”, USD590B is “pink”, USD685A Is “red”, USD685B is “black”, and USD980 is “gray”.

Examples of the second color group used for the diameter identification mark 16A are as follows.
D10 (diameter 10 mm, the same applies hereinafter), D25 and D38 are “red”, D16, D29 and D41 are “yellow”, D19, D32 and D51 are “green”, and D22 and D35 are “blue”.
Although the same color is used for a plurality of diameters, these diameters are greatly different, so that they are not mistakenly identified.

As described above, the steel type and diameter are displayed in color on the peripheral surface of the steel bar 10, so that it is easy to see even at a distance from the construction site, the steel type and diameter can be clearly identified, and misplacement is prevented. Can do.
Although the colors used in the steel type identification mark 15A and the diameter identification mark 16A are partly common, they can be distinguished from each other by their shapes, so they are not confused.
Moreover, since there are many display areas 14A at intervals, even if the deformed steel bar 10 is cut at the factory or construction site, the display area 14A remains on the deformed steel bar, and the steel type and diameter can be identified.

Next, another embodiment of the present invention will be described with reference to the drawings. In these embodiments, components corresponding to those of the first embodiment are denoted by the same or similar numbers, and detailed description thereof is omitted.
In the second to tenth embodiments, the colors used for the steel type identification mark and the diameter identification mark are the same as those of the first embodiment.

  In the second embodiment shown in FIG. 2, in each display area 14 </ b> B formed at equal intervals in the axial direction of the steel bar 10, the steel type identification mark 15 </ b> B and the diameter identification mark 16 </ b> B are spaced in the axial direction of the steel bar 10. Is formed. Two steel type identification marks 15B are arranged in each display area 14B, and one diameter identification mark 16B is arranged, and the steel type identification mark 15B and the diameter identification mark 16B can be identified by the difference in the number.

  In the third embodiment shown in FIG. 3, in each display region 14 </ b> C formed at equal intervals in the axial direction of the steel bar 10, the steel type identification mark 15 </ b> C and the diameter identification mark 16 </ b> C are spaced in the axial direction of the steel bar 10. Is formed. A plurality of steel type identification marks 15C are formed in the circumferential direction, and the diameter identification mark 16C is formed in a bar shape extending in the circumferential direction. The steel type identification mark 15C and the diameter identification mark 16C can be identified by their shape and number.

  In the fourth embodiment shown in FIG. 4, the steel type identification mark 15 </ b> D and the diameter identification mark 16 </ b> D are formed at intervals in the axial direction of the steel bar 10 in the display region 14 </ b> D formed at regular intervals in the axial direction of the steel bar 10. Has been. The steel type identification mark 15D is formed so as to extend in the circumferential direction of the steel bar 10 (direction perpendicular to the axis of the assault 10 when viewed from the side surface), and the diameter identification mark 16D is formed in substantially the same direction as the screw node 11a. The steel type identification mark 15D and the diameter identification mark 16D can be identified by the difference in the angle with respect to the axis of the steel bar 10 and the screw node 11a.

  In the fifth embodiment shown in FIG. 5, in the display region 14E formed at equal intervals in the axial direction of the steel bar 10, the diameter identification mark 16E is formed in the same direction as the screw node 11a, and the steel type identification mark 15E is the diameter. The diameter identification mark 16E is divided into two parts by being overcoated so as to intersect the identification mark 16E. The steel type identification mark 15E and the diameter identification mark 16E can be identified by the difference in the angle, shape, and number of the steel rod 10 with respect to the screw joint 11a. Even when the marks 15E and 16E have the same color, it is possible to identify the steel type and the diameter corresponding to the color, so that no inconvenience occurs.

  In the sixth embodiment shown in FIG. 6, in the display region 14F formed at equal intervals in the axial direction of the steel bar 10, the diameter identification mark 16F is formed in a large circle, and the steel type identification mark 15F is the diameter identification mark 16F. It is formed in a small circle by overcoating at the center. The steel type identification mark 15E and the diameter identification mark 16E can be identified by the diameter and shape. If the marks 15E and 16E have the same color, it is possible to identify the steel type and the diameter corresponding to the color, so there is no inconvenience. In addition, when the steel type identification mark 15F is colorless, the diameter identification mark 16F may be formed in a donut shape without applying paint to the center of the diameter identification mark 16F.

  The seventh embodiment shown in FIG. 7 has a single display area that extends over substantially the entire length of the steel bar 10. In this display region, a linear steel type identification mark 15G is formed on the flat portion 12 so as to extend along the axis of the steel bar 10. The diameter identification marks 16G are arranged at equal intervals in the axial direction of the steel bar 10 and extend in the circumferential direction. The diameter identification marks 16G intersect with the steel type identification mark 15G and are overcoated so as to divide the steel type identification mark 15G. Yes. The steel type identification mark 15G and the diameter identification mark 16G can be identified by their extending direction (angle with respect to the axis of the steel bar 10), shape, and number.

  The eighth embodiment shown in FIG. 8 also has a single display area that extends over substantially the entire length of the steel bar 10. In this display area, a linear diameter identification mark 16 </ b> H is formed on the flat portion 12 so as to extend along the axis of the steel bar 10. Further, in the same flat portion 12, adjacent to the diameter identification mark 16H, a number of steel type identification marks 15H are formed at equal intervals along the diameter identification mark 16H. The marks 15H and 16H can be identified by their shapes and numbers.

The ninth embodiment shown in FIG. 9 also has a single display area that extends over substantially the entire length of the steel bar 10. In this display area, a wide linear diameter identification mark 16I extending continuously along the axis of the steel bar 10 is formed on one flat portion 12, and a narrow linear steel type identification is formed at the center in the width direction. The mark 15I is overcoated so as to divide the diameter identification mark 16I into two. These marks 15I and 16I are identified by their size, shape, and number.
In the ninth embodiment, the diameter identification mark 16I may be wider and extended to the ends of the pair of screw portions 11. Further, the diameter identification mark 15I and the diameter identification mark 16I may have the same width, and a large number of steel type identification marks 15I may be formed at intervals in the axial direction.

In the tenth embodiment shown in FIG. 10, the steel bar 10 has a display area 14J that is a predetermined distance L (for example, 1 m) away from the end face 13 (the paint of the color corresponding to the steel type is applied according to JIS standards). Yes.
In the display area 14J, a steel type identification mark 15J and a diameter identification mark 16J that are separated from each other in the axial direction of the steel bar 1 are formed.
Although the shape, size, number, and angle of the steel type identification mark 15J and the diameter identification mark 16J are the same, the steel type identification mark 15J is located closer to the end face 13 than the diameter identification mark 16J. The mark 16J can be identified.

  In the eleventh embodiment shown in FIG. 11, the steel type identification mark 15 </ b> K and the diameter identification mark 16 </ b> K are spaced apart in the axial direction of the steel bar 10 in each display region 14 </ b> K formed at regular intervals in the axial direction of the steel bar 10. Is formed. These marks 15K and 16K have the same shape, size, number, and angle, but the steel type identification mark 15K exhibits a color selected from the first color group, and the diameter identification mark 16K is a color selected from the second color group. Since the first color group and the second color group do not include the same color, both marks 15K and 16K can be identified.

In the eleventh embodiment, the first color group used for the steel type identification mark 15K is, for example, the same as the color group used for the steel type identification mark 15A of the first embodiment. The second color group used for the diameter identification mark 16K is, for example, as follows.
Examples of the color of the diameter identification mark 16K are as follows.
D10 (diameter 10 mm, the same applies hereinafter), D25 and D38 are “purple”, D16, D29 and D41 are “cream”, D19, D32 and D51 are “brown”, and D22 and D35 are “marvel blue”.

  In the twelfth embodiment shown in FIG. 12, the steel bar 10 has a single display region that extends over substantially the entire length, and in this display region, the flat portion 12 has the same width that continuously extends along the axis of the steel bar 10. The steel type identification mark 16L and the diameter identification mark 16L are formed. In this embodiment as well, as in the eleventh embodiment, the steel type identification mark 15L exhibits a color selected from the first color group, and the diameter identification mark 16L exhibits a color selected from the second color group. Since the color group and the second color group do not include the same color, both marks 15L and 16L can be identified.

In the eleventh and twelfth embodiments, one specific color may be used in common in the first color group and the second color group. For example, the color representing D22 and D35 of the diameter identification marks 16K and 16L is set to “blue”, which is the same as the color representing the SD490 of the steel type identification marks 15K and 15L. The other colors of the first color group and the other colors of the second color group are different from each other as in the eleventh and twelfth embodiments.
In this case, when the steel type identification marks 15K and 15L and the diameter identification marks 16K and 16L are displayed in blue, it is possible to recognize that the steel type is SD490 and the diameter is D22 and D35, although both marks cannot be identified. .

  In the first to sixth embodiments and the eleventh embodiment, the intervals between the display areas 14A to 14F and 14K are shown to be narrow for easy understanding, but this interval is set to about 1 m to 2 m. preferable.

  In the seventh to ninth and twelfth embodiments, the steel bar 10 may have a single display area extending over substantially the entire length thereof, or a plurality of elongated display areas spaced along the axis of the steel bar 10. You may have.

  In the first to tenth embodiments, as in the eleventh and twelfth embodiments, the first color group of the steel type identification mark and the second color group of the diameter identification mark do not include the same color. Also good. According to this, the steel type identification mark and the diameter identification mark can be further identified.

  FIG. 13 shows a joint 20 for connecting the deformed steel bar 10 of the above-described embodiment. This joint 20 has a threaded hole penetrating in the axial direction. The ends of the deformed steel bar 10 are screwed into the left and right steel bar connecting parts 21 and 22, and a grout material is injected from the injection hole 20a and hardened. By doing so, the two steel bars 10 are connected.

The left and right steel bar connecting portions 21 and 22 of the joint 20 have a steel type identification mark 25 made of a color paint corresponding to the steel type of the steel bar 10 to be connected and a diameter identification made of a color paint corresponding to the diameter of the steel bar 10. Mark 26 is attached.
It is preferable that the color of the steel type identification mark 25 is the same color as the steel type identification mark 15 of the steel bar 10 to be connected, and the color of the diameter identification mark 26 is the same color as the steel type identification mark 15 of the steel bar 10 to be connected.

  The marks 25 and 26 are different from each other in at least one of the shape, size, number, angle, and position from the end face, and / or the first color group and the second color group that do not include a common color. Use to make them distinguishable from each other. Preferably, it is preferable to identify the steel type identification mark 15 and the diameter identification mark 25 of the steel bar 10 in the same manner as in the first to twelfth embodiments. For example, in the deformed steel bar 10 as shown in the figure, when the steel type identification mark 15 extends in the circumferential direction and the diameter identification mark 16 extends in the axial direction, the steel type mark 25 extends in the circumferential direction at the joint 20 to identify the diameter. The mark 26 extends in the axial direction.

  The steel type identification mark and the diameter identification mark are preferably baked and coated after the rolling process of the deformed steel bar and before the steel bar is not completely cooled. In this case, a paint having water solubility and heat resistance is used.

The present invention is not limited to the above-described embodiments, and various aspects can be adopted. For example, of course, the steel type identification mark and the diameter identification mark may be interchanged in the above embodiment.
The color used for the steel type identification mark and the diameter identification mark can be arbitrarily selected. One of the second color groups of the diameter identification mark may be colorless (no paint).
In addition to the steel type identification mark and the diameter identification mark made of paint, the deformed steel bar may be marked on the peripheral surface of the steel bar 1 by a rolling roll to indicate the steel type and diameter.
The steel type identification mark and the diameter identification mark may be formed on the thread portion, or may be formed over the entire circumference (360 °).
The present invention may be applied to a deformed steel bar having a bamboo section. The same mark as FIG. 13 can be given also to the joint which connects such a deformed steel bar. In the case of bamboo knives, in addition to the steel type identification mark and the diameter identification mark, the steel type and / or the diameter may be represented by the distance between the horizontal nodes of the bamboo knives, the angle with respect to the axis of the steel bar, or the like.
The present invention may be applied to deformed steel bars processed into various shapes such as a shear reinforcing bar bent in an annular shape.

  The present invention can be applied to identify the steel type and diameter of a deformed steel bar used for construction or the like.

DESCRIPTION OF SYMBOLS 10 Deformed bar steel 14A-14F, 14J, 14K Display area 15, 15A-15L Steel type identification mark 16, 16A-16L Diameter identification mark 20 Joint 21,22 Bar steel connection part 25 Steel type identification mark 26 Diameter identification mark

Claims (8)

  In a deformed steel bar, a steel bar identifying mark made of a paint exhibiting a color corresponding to the steel type and a diameter identifying mark made of a paint exhibiting a color corresponding to the diameter are attached to the peripheral surface thereof. .   The peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, and the steel type identification mark and the diameter identification mark are attached to each display area. The shaped bar according to claim 1, wherein the shaped bar differs in at least one of shape, number, dimension, and angle to the shaped bar.   The steel type identification mark and the diameter identification mark are different in at least one of shape, number, size, and angle with respect to the deformed steel bar, and at least one of the steel type identification mark and the diameter identification mark is an axial direction of the deformed steel bar The deformed steel bar according to claim 1, wherein the steel bar extends continuously and along the axis.   The peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, the steel type identification mark and the diameter identification mark are attached to each display area, and the steel type identification mark is the first color group. And the diameter identification mark exhibits a color selected from the second color group, and the first color group and the second color group do not include the same color. 1. The deformed steel bar according to 1.   The peripheral surface has a plurality of display areas arranged along the axis of the deformed steel bar, the steel type identification mark and the diameter identification mark are attached to each display area, and the steel type identification mark is the first color group. The color identification mark exhibits a color selected from the second color group, and one specific color is used in common in the first color group and the second color group. The deformed steel bar according to claim 1, wherein the colors of the steel bars are different from each other.   The deformed steel bar according to claim 1, wherein the steel type identification mark and the diameter identification mark can be identified by distance from the end of the deformed steel bar.   In the joint for connecting the deformed steel bars according to claim 1, a diameter identification mark indicating the diameter of the deformed steel bar to be connected is attached to each peripheral surface of the left and right steel bar connecting portions. A joint comprising the same color paint as the diameter identification mark attached to the deformed steel bar to be connected.   A steel type identification mark indicating the steel type of the deformed steel bar to be connected is attached to the peripheral surfaces of the left and right steel bar joints, and this steel type identification mark has the same color as the steel type identification mark attached to the deformed steel bar to be connected. The joint according to claim 7, comprising a paint.

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