CN102313448A - Porous metal beam - Google Patents

Abstract

The invention discloses a porous metal beam which comprises a beam main body, wherein a plurality of inner grooves with arc-shaped cross sections are continuously arranged on the upper surface of the beam main body, and a plurality of through groove inner holes are formed in the inner surface of each inner groove. The inner holes of the grooves are symmetrically distributed along the center line of the cambered surface of the inner groove. According to the invention, the inner grooves for supporting the steel pipes on the upper surface of the metal beam are provided with the plurality of groove inner holes communicated with the interior of the furnace body according to a certain rule, so that the iron oxide scales falling off the inner grooves of the metal beam can fall into the stepping furnace through the groove inner holes, the accumulation of the iron oxide scales on the metal beam is effectively reduced, the rolling of the steel pipes is facilitated, the bending of the steel pipes is reduced, the step pitch of the steel pipes is accurate, the normal discharging can be ensured, the adhesion between the steel pipes and the iron oxide scales is avoided, the surface quality and the yield of the steel pipes are improved, and the steel pipe heating furnace is widely suitable for various steel pipe heat treatment furnaces.

Description

porous metal beam

technical field

The invention relates to a metal beam structure of an industrial furnace, in particular to a porous metal beam in a steel pipe walking furnace in the metallurgical industry.

Background technique

At present, in the steel pipe walking furnace, the steel pipe in the furnace needs to support the billet through metal fixed beams and metal movable beams. The movable beam moves once in a cycle, and the billet advances by one step. Both the fixed beam and the movable beam are heat-resistant steel metal beam components, which are manufactured into different shapes according to different working conditions. Please refer to FIG. 1 , which is a structural schematic diagram of an existing industrial furnace metal beam. As shown in Figure 1, the existing metal beams of industrial furnaces include a beam main body 101. The upper surface of the beam main body 101 has a plurality of concave arc-shaped supporting surfaces 102 arranged continuously, and a plurality of steel pipes 103 are respectively placed in each concave arc-shaped on the support surface 102. Since the step distance of the steel pipe 103 is inconsistent with the tooth pitch between the two adjacent concave arc-shaped support surfaces 102 on the beam main body 101, the steel pipe 103 can rotate at a certain angle every time a step is advanced, so as to avoid the steel pipe 103 from being in a high temperature state. Bend down.

As we all know, the steel pipe 103 will inevitably produce iron oxide scale during the heating process, and the iron oxide scale falls off on the concave arc-shaped support surface 102, and as the fallen iron oxide scale accumulates higher and higher, it will hinder the normal rolling of the steel pipe, which will not only make the steel pipe The steel pipe is bent, and there is also a hidden danger that the material cannot be discharged normally. In addition, the oxide scale may also adhere to the steel pipe and damage the surface quality of the steel pipe. If manual operation is used to remove the peeled iron oxide scale, it will not only take time and effort, but also affect normal production. Therefore, how to remove iron scale in time to ensure that normal production is not affected has become an urgent goal for the industry to improve.

In view of the problem of iron scale accumulation on the surface of metal beams, based on the rich experience and strong professional knowledge in mechanical design and manufacturing for many years, combined with the actual application of metal beams, the designer actively researched and innovated, in order to overcome the existing metal beams in terms of structure. Beam's downside.

Contents of the invention

The object of the present invention is to provide a porous metal beam with simple structure, convenient processing, timely removal of scale, ensuring normal rolling of steel pipes and avoiding adhesion between scale and steel pipe.

In order to achieve the above object, the present invention proposes a porous metal beam, which includes a beam main body, a plurality of inner grooves with circular arc-shaped cross-sections are continuously arranged on the upper surface of the beam main body, and each inner groove Several through groove inner holes are opened on the surface.

The porous metal beam as described above, wherein the inner holes of the plurality of grooves are distributed symmetrically along the centerline of the arc surface of the inner groove.

The porous metal beam as described above, wherein at least two rows of groove inner hole groups are provided along the length direction of the beam main body on the same side of the center line of the arc surface of the inner groove, and each row of groove inner holes The hole set has at least two inner holes of the groove arranged at equal intervals.

The above-mentioned porous metal beam, wherein, the distance between two adjacent rows of inner hole groups in the groove along the longitudinal center line of the beam main body is 50 mm to 120 mm.

The porous metal beam as described above, wherein the distance between the centers of two adjacent groove inner holes in the groove inner hole group is 60 mm to 120 mm.

The porous metal beam as described above, wherein the diameter of the inner hole of the groove is 20mm-80mm.

The porous metal beam as described above, wherein four inner holes of the groove are arranged on the same side of the center line of the arc surface of the inner groove, and the four inner holes of the groove are distributed in a rectangular shape.

The above-mentioned porous metal beam, wherein four inner holes of the groove are provided on the same side of the center line of the arc surface of the inner groove, and the four inner holes of the groove are distributed in a trapezoidal shape.

Compared with the prior art, the present invention has the following characteristics and advantages:

In the present invention, a number of groove inner holes communicating with the inside of the furnace body are arranged according to certain rules on the inner groove on the upper surface of the metal beam for supporting the steel pipe, so that the iron oxide scale falling off the inner groove of the metal beam can pass through each The inner hole of the groove falls into the stepping furnace, effectively reducing the accumulation of oxide scale on the metal beam, which is beneficial to the rolling of the steel pipe, reducing the bending of the steel pipe, making the steel pipe step accurate, ensuring normal discharge, and avoiding The adhesion between the steel pipe and the iron oxide scale improves the surface quality and yield of the steel pipe, and is widely suitable for use in various steel pipe heat treatment furnaces, steel pipe heating furnaces and reheating furnaces.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in,

Fig. 1 is the structural representation of existing industrial kiln metal girder;

Fig. 2 is the structural representation of porous metal beam of the present invention;

Fig. 3 is the top view structure schematic diagram of the porous metal beam of the present invention;

Fig. 4 is a schematic diagram of the structure in which the inner holes of the groove are distributed in a trapezoidal shape according to the present invention.

Explanation of reference signs:

current technology:

101-beam body; 102-concave arc support surface; 103-steel pipe.

this invention:

1-beam body; 2-steel pipe; 3-inner groove; 4-groove inner hole.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a schematic structural diagram of the porous metal beam of the present invention. As shown in the figure, the porous metal beam proposed by the present invention can be used in a steel pipe walking furnace in the metallurgical industry. The arc-shaped inner grooves 3 are used to support the steel pipe 2 , and several through groove inner holes 4 are opened on the inner surface of each inner groove 3 . In this way, the iron oxide scale falling off on the inner groove 3 of the metal beam can fall into the walking furnace through the inner holes 4 of each groove, effectively reducing the accumulation of iron oxide scale on the metal beam, which is beneficial to the rolling of the steel pipe and reduces The bending of the small steel pipe makes the step distance of the steel pipe accurate, can ensure the normal discharge, and avoids the adhesion of the steel pipe and the oxide scale, and improves the surface quality of the steel pipe.

Please also refer to FIG. 3 , which is a schematic top view of the porous metal beam of the present invention. As shown in the figure, the inner holes 4 of the plurality of grooves are distributed symmetrically along the centerline L of the arc surface of the inner groove 3, so that when the steel pipe 2 shakes in the inner groove 3, as much iron oxide scale as possible passes through the grooves. The groove inner hole 4 falls into the furnace in time, thereby ensuring the quality of the steel pipe.

Further, as shown in Figure 3, two rows of groove inner hole groups are arranged along the length direction of the beam main body on the same side of the arc surface centerline L of the inner groove 3, and each row of groove inner hole groups There are two groove inner holes 4 arranged at equal intervals. In this embodiment, there are four groove inner holes 4 on the same side of the arc surface centerline L of the inner groove 3, and the four groove inner holes 4 are distributed in a rectangular shape. This can not only ensure the strength of the metal beam, but also make the iron oxide scale fall into the furnace in time, greatly reducing the accumulation of iron oxide scale on the metal beam. According to the actual working conditions and the size of the metal beam, three, four or more rows of grooves can be arranged on the same side of the center line L of the arc surface of the inner groove 3 along the length direction of the beam main body. hole group, and each row of groove inner hole groups can have three, four or more said groove inner holes 4 arranged at equal intervals, the present invention does not limit the number of groove inner holes 4, as long as it can ensure It is enough to make the iron oxide scale fall into the furnace in time.

Further, as shown in FIG. 3 , in order to make the distribution of the groove inner holes 4 more reasonable and effective, the distance a 50mm ~ 120mm. The distance b between the centers of two adjacent groove inner holes 4 of the groove inner hole group is 60 mm to 120 mm. The diameter of the inner hole 4 of the groove is 20 mm to 80 mm, and the strength of the metal beam is ensured by controlling the diameter of the hole.

As an optional embodiment of the present invention, as shown in FIG. 4 , multiple groove inner holes 4 on the same side of the center line of the arc surface of the inner groove 3 may also be distributed in trapezoidal or other polygonal shapes. The present invention does not limit the distribution shape of the groove inner hole 4 on the inner groove 3, as long as the iron oxide scale can be dropped into the furnace in time.

In summary, the present invention arranges several groove inner holes communicating with the interior of the furnace body according to certain rules on the inner groove on the upper surface of the metal beam for supporting the steel pipe, so that the inner groove that falls off the inner groove of the metal beam The oxide scale can fall into the walking furnace through the inner holes of each groove, which effectively reduces the accumulation of oxide scale on the metal beam, facilitates the rolling of the steel pipe, reduces the bending of the steel pipe, makes the step distance of the steel pipe accurate, and can ensure normal production It avoids the adhesion of the steel pipe and the scale, improves the surface quality and yield of the steel pipe, and is widely suitable for use in various steel pipe heat treatment furnaces, steel pipe heating furnaces and reheating furnaces.

The above descriptions are only illustrative specific implementations of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. A porous metal beam, comprising a beam main body, on the upper surface of the beam main body, a plurality of circular arc-shaped inner grooves are continuously arranged, and it is characterized in that, on the inner surface of each inner groove There are several through groove inner holes. 2. The porous metal beam according to claim 1, characterized in that, the inner holes of the plurality of grooves are distributed symmetrically along the center line of the arc surface of the inner groove. 3. The porous metal beam according to claim 2, characterized in that, at least two rows of groove inner hole groups are provided along the length direction of the beam main body on the same side of the center line of the arc surface of the inner groove, Each row of the groove inner hole group has at least two groove inner holes arranged at equal intervals. 4. The porous metal beam according to claim 3, characterized in that, the distance between two adjacent rows of the inner hole groups of the grooves along the longitudinal centerline of the beam main body is 50mm-120mm. 5 . The porous metal beam according to claim 3 , wherein the distance between the centers of two adjacent groove inner holes in the groove inner hole group is 60 mm to 120 mm. 5 . 6. The porous metal beam according to claim 3, characterized in that, the diameter of the inner hole of the groove is 20mm-80mm. 7. The porous metal beam according to claim 2, characterized in that four inner holes of the groove are arranged on the same side of the center line of the arc surface of the inner groove, and the four grooves The inner holes are distributed in a rectangular shape. 8. The porous metal beam as claimed in claim 2, characterized in that four inner holes of the groove are arranged on the same side of the center line of the arc surface of the inner groove, and the four inner holes of the groove are The holes in the groove are distributed in a trapezoidal shape.

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