Hole pattern system for steel bar four-segmentation controlled cooling and controlled rolling process

Abstract

The utility model discloses a pass system for a four-slitting controlled cooling and controlled rolling process of reinforcing steel bars, which comprises a round hole pass, a plurality of guide rails, a plurality of guide rails and a plurality of guide rails which are distributed in sequence, the flat roll hole pattern is arranged without holes; the first pre-segmentation hole pattern is provided with two holes; the first slitting hole pattern is provided with two holes; the box type hole pattern is a hole; the second pre-splitting hole pattern is provided with two holes; the second slitting hole pattern is provided with two holes; and the elliptical hole is arranged as a hole. The hole pattern system has the advantages that the problems of high temperature and non-uniform temperature of two pieces of steel in the controlled cooling and controlled rolling process can be solved only by changing the hole pattern system for the four-segmentation controlled cooling and controlled rolling process, the original temperature does not need to be controlled, and a foundation is laid for successful implementation of the controlled cooling and controlled rolling process.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar production, in particular to a pass system for a steel bar four-slicing controlled cooling and rolling process. Background Art

[0002] Multi-slicing controlled cooling and rolling to produce steel bars can reduce alloy costs without affecting output. However, the main bottleneck in the controlled cooling and rolling process of four-slicing is the uneven temperature of the four incoming materials, especially the two middle ones. The temperature of the slicing zone is relatively high, affecting the mechanical properties of the product. So far, this method has basically not been successful in China. Utility Model Content

[0003] The purpose of the utility model is to provide a pass system for a four-section controlled cooling and rolling process of steel bars, which solves the problem of high and uneven temperature of the two middle steel bars in the controlled cooling and rolling process, and lays the foundation for the successful implementation of the controlled cooling and rolling process.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A pass system for a steel bar four-slicing controlled cooling and rolling process, characterized by comprising:

[0006] Round hole type, which is a one-hole setting;

[0007] The flat roller pass is a hole-free setting;

[0008] The first pre-cut hole pattern is a two-hole arrangement;

[0009] The first dividing hole type is a two-hole setting;

[0010] Box-type hole type, which is a one-hole setting;

[0011] The second pre-cut hole type is a two-hole arrangement;

[0012] The second split hole type is a two-hole arrangement;

[0013] Elliptical hole type, which is a single hole setting.

[0014] Preferably, the hole height of the circular hole is 66 mm, the roller gap is 10 mm, the hole slot width is 72 mm, the angle between the second straight line and the vertical direction is 33°, and the slot fillet radius is 6 mm.

[0015] Preferably, the pass height of the flat roller is 38 mm, the width of the pass groove bottom is 74 mm, and the width of the groove opening is 82 mm.

[0016] Preferably, the first pre-cut hole is dumbbell-shaped, with a hole height of 28 mm, a hole groove bottom width of 82 mm, a groove opening width of 90 mm, a wedge tip arc radius of 7.09 mm, a groove bottom tangent arc radius of 10 mm, and a wedge tip arc tangent angle of 48°.

[0017] Preferably, the first cutting hole is dumbbell-shaped, with a hole height of 22.5 mm, a hole groove bottom width of 91 mm, a groove opening width of 95 mm, a wedge tip arc radius of 1.34 mm, and a groove bottom tangent arc radius of 10 mm.

[0018] Preferably, the bottom height of the box-type hole is 22 mm, the bottom width of the hole is 32 mm, the roller gap is 6 mm, and the fillet radius of the notch of the box-type hole is the same as the fillet radius of the bottom, both of which are 5 mm.

[0019] Preferably, the second pre-cut hole is dumbbell-shaped, the center distance between the two circles of the dumbbell is 22.48 mm, the slot width is 44.01 mm, the slot corner radius is 5 mm, the wedge tip arc radius is 3.2 mm, the cutting wheel angle is 84°, the radius of the two circles of the dumbbell is 9.3 mm, and the distance between the wedge tops is 9 mm.

[0020] Preferably, the second cutting hole is dumbbell-shaped, the notch corner radius is 4mm, the wedge tip arc radius is 0.75mm, the cutting wheel angle is 64°, the two circles of the dumbbell shape have a radius of 9.48mm, and the wedge top spacing is 0.8mm.

[0021] Preferably, the elliptical hole profile has a hole profile height of 11.5 mm, a roller gap of 3 mm, a hole profile slot width of 31 mm, a slot bottom circle radius of 30.39 mm, and a slot corner radius of 2 mm.

[0022] In summary, the present invention has the following beneficial effects:

[0023] The original four-cut process adopts the pre-cutting-cutting process. Because the outer incoming material has more contact with the roller cooling water, the middle incoming material has less contact with the cooling water and the core temperature is higher, a temperature difference is formed between the outer and middle parts. The resulting temperature difference cannot be eliminated through process control. By first cutting two parts and then cutting two parts again, the temperature difference between the core and the boundary is avoided, and the temperature uniformity of the four-cut four-piece material is achieved.

[0024] The problem of high and uneven temperature of the two middle steel bars in the controlled cooling and rolling process can be solved by simply changing the hole system used in the four-section controlled cooling and rolling process. There is no need to control the original temperature, which lays the foundation for the successful implementation of the controlled cooling and rolling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the circular hole structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the flat roller pass structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the first pre-cut hole structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the first cutting hole structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the box-type hole structure of the utility model;

[0030] Figure 6 This is a schematic diagram of the second pre-cut hole structure of the utility model;

[0031] Figure 7 This is a schematic diagram of the second cutting hole structure of the utility model;

[0032] Figure 8 It is a schematic diagram of the elliptical hole structure of the utility model. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0034] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be a central element at the same time. The terms "installation", "one end", "the other end" and similar expressions used herein are for illustrative purposes only. On the other hand, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figures 1 to 8 The pass system for the steel bar four-slicing controlled cooling and rolling process shown includes the following distributed in sequence:

[0037] Round hole type, which is a one-hole setting;

[0038] The flat roller pass is a hole-free setting;

[0039] The first pre-cut hole pattern is a two-hole arrangement;

[0040] The first dividing hole type is a two-hole setting;

[0041] Box-type hole type, which is a one-hole setting;

[0042] The second pre-cut hole type is a two-hole arrangement;

[0043] The second split hole type is a two-hole arrangement;

[0044] Elliptical hole type, which is a single hole setting.

[0045] like Figure 1 As shown, the hole height of the circular hole is 66 mm, the roller gap is 10 mm, the hole slot width is 72 mm, the angle between the second straight line and the vertical direction is 33°, and the slot fillet radius is 6 mm.

[0046] like Figure 2 As shown, the hole height of the flat roller is 38 mm, the hole bottom width is 74 mm, and the slot width is 82 mm.

[0047] like Figure 3 As shown, the first pre-cut hole is dumbbell-shaped, the hole height is 28 mm, the hole groove bottom width is 82 mm, the groove mouth width is 90 mm, the wedge tip arc radius is 7.09 mm, the groove bottom tangent arc radius is 10 mm, and the wedge tip arc tangent angle is 48°.

[0048] like Figure 4 As shown, the first cutting hole is dumbbell-shaped, the hole height is 22.5mm, the hole groove bottom width is 91mm, the groove mouth width is 95mm, the wedge tip arc radius is 1.34mm, and the groove bottom tangent arc radius is 10mm.

[0049] like Figure 5As shown, the box-type hole groove bottom height is 22mm, the hole groove bottom width is 32mm, the roller gap is 6mm, and the groove corner radius of the box-type hole groove is the same as the groove bottom corner radius, both of which are 5mm.

[0050] like Figure 6 As shown, the second pre-cut hole is dumbbell-shaped, the center distance between the two circles of the dumbbell is 22.48mm, the slot width is 44.01mm, the slot corner radius is 5mm, the wedge tip arc radius is 3.2mm, the cutting wheel angle is 84°, the radius of the two circles of the dumbbell is 9.3mm, and the distance between the wedge tops is 9mm.

[0051] like Figure 7 As shown, the second cutting hole is dumbbell-shaped, the groove corner radius is 4mm, the wedge tip arc radius is 0.75mm, the cutting wheel angle is 64°, the two circles of the dumbbell shape have a radius of 9.48mm, and the wedge top spacing is 0.8mm.

[0052] like Figure 8 As shown, the hole height of the elliptical hole is 11.5 mm, the roller gap is 3 mm, the hole slot width is 31 mm, the groove bottom circle radius is 30.39 mm, and the slot corner radius is 2 mm.

[0053] The original four-cut process adopts the pre-cutting-cutting process. Because the outer incoming material has more contact with the roller cooling water, the middle incoming material has less contact with the cooling water and the core temperature is higher, a temperature difference is formed between the outer and middle parts. The resulting temperature difference cannot be eliminated through process control. By first cutting two parts and then cutting two parts again, the temperature difference between the core and the boundary is avoided, and the temperature uniformity of the four-cut four-piece material is achieved.

[0054] By simply changing the pass system used in the four-slit controlled cooling and rolling process, the problem of high and uneven temperatures in the two middle steel bars can be solved. No need to control the original temperature, laying the foundation for the successful implementation of the controlled cooling control process. By simply changing the pass system used in the four-slit controlled cooling and rolling process, the problem of high and uneven temperatures in the two middle steel bars can be solved. No need to control the original temperature, laying the foundation for the successful implementation of the controlled cooling control process.

[0055] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A pass system for a steel bar four-slicing controlled cooling and rolling process, characterized in that: Including the following: Round hole type, which is a one-hole setting; The flat roller pass is a hole-free setting; The first pre-cut hole pattern is a two-hole arrangement; The first dividing hole type is a two-hole arrangement; Box-type hole type, which is a one-hole setting; The second pre-cut hole pattern is a two-hole arrangement; The second split hole type is a two-hole arrangement; Elliptical hole type, which is a single hole setting.

2. A pass system for a steel bar four-slicing controlled cooling and rolling process according to claim 1, characterized in that: The hole height of the circular hole is 66 mm, the roller gap is 10 mm, the hole slot width is 72 mm, the angle between the second straight line and the vertical direction is 33°, and the slot fillet radius is 6 mm.

3. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The pass profile of the flat roller has a pass profile height of 38 mm, a pass profile groove bottom width of 74 mm, and a groove opening width of 82 mm.

4. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The first pre-cut hole is dumbbell-shaped, with a hole height of 28 mm, a hole groove bottom width of 82 mm, a groove opening width of 90 mm, a wedge tip arc radius of 7.09 mm, a groove bottom tangent arc radius of 10 mm, and a wedge tip arc tangent angle of 48°.

5. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The first cutting hole is dumbbell-shaped, with a hole height of 22.5 mm, a hole groove bottom width of 91 mm, a groove opening width of 95 mm, a wedge tip arc radius of 1.34 mm, and a groove bottom tangent arc radius of 10 mm.

6. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The box-type hole has a bottom height of 22 mm, a bottom width of 32 mm, a roll gap of 6 mm, and a notch fillet radius of the box-type hole that is the same as the bottom fillet radius, both of which are 5 mm.

7. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The second pre-cutting hole is dumbbell-shaped, the center distance between the two circles of the dumbbell is 22.48mm, the slot width is 44.01mm, the slot corner radius is 5mm, the wedge tip arc radius is 3.2mm, the cutting wheel angle is 84°, the radius of the two circles of the dumbbell is 9.3mm, and the distance between the wedge tops is 9mm.

8. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The second cutting hole is dumbbell-shaped, with a groove corner radius of 4mm, a wedge tip arc radius of 0.75mm, a cutting wheel angle of 64°, a dumbbell-shaped two circle radius of 9.48mm, and a wedge top spacing of 0.8mm.

9. The pass system for the steel bar four-splitting controlled cooling and rolling process according to claim 1, characterized in that: The elliptical hole profile has a hole profile height of 11.5 mm, a roller gap of 3 mm, a hole profile slot width of 31 mm, a slot bottom circle radius of 30.39 mm, and a slot corner radius of 2 mm.

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