High-precision low-bubble cold-drawn steel and preparation process thereof

Abstract

The present application relates to cold-drawing type steel production equipment technical field, specifically for a kind of high-precision low-bubble cold-drawing type steel forming equipment, including cold-drawing type steel cooling forming equipment ontology, for the cooling and shaping treatment of cold-drawing type steel;Beneficial effect is as follows: the quality of forming cold-drawing type steel is good, the drawing sliding seat is erected in the upper end of the special-shaped sliding rail, and the cold-drawing type steel port is pulled to draw along the sliding track, and the cold-drawing type steel is uniformly cooled by the gathered cold air in the cooling box body, and is assisted to be shaped, the filter assembly additionally arranged in the upper end of arched air deflector is blocked to external impurities, the cold-drawing steel of cooling and shaping is avoided to be affected by dust adhesion, the problem that the quality of cold-drawing type steel product is very easy to be influenced, forming precision is reduced when traditional cold-drawing type steel forming device is cooled and shaped, directly air-cooled cooling leads to external dust not to be difficult to pass through processing directly contact with steel surface, surface often appears sand eye, impurity, hollow bubble and other phenomena.

Description

TECHNICAL FIELD

[0001] The present application relates to cold-drawing steel production equipment technical field, specifically to a kind of high-precision low bubble cold-drawing steel and its preparation process. BACKGROUND

[0002] Cold-drawing steel is under normal temperature conditions, with the tensile stress that exceeds the yield point strength of original reinforcement, forcibly stretched reinforcement, so that reinforcement produces plastic deformation to achieve the purpose of improving the yield point strength of reinforcement and saving steel, it is using cold extrusion technology, through accurate mold, draw various high-precision, smooth surface round steel, square steel, flat steel, hexagonal steel and other special-shaped steel, the material saved by cold-drawing steel is considerable, especially when the material usage is large, the cost of material saving is more remarkable.

[0003] However, the traditional cold-drawing steel forming device directly blows air cooling when cooling and forming, which causes the external dust to directly contact with the surface of the steel without difficult treatment, and the surface often appears sand eye, impurities, hollow bubble and other phenomena, which is very easy to affect the quality of cold-drawing steel finished product and reduce the forming precision. SUMMARY

[0004] The purpose of the present application is to provide a kind of high-precision low bubble cold-drawing steel and its preparation process to solve the problems raised in the above background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: on the one hand, a kind of high-precision low bubble cold-drawing steel forming equipment, including cold-drawing steel cooling and forming equipment body, for cooling and shaping treatment of cold-drawing steel, the upper part of the cold-drawing steel cooling and forming equipment body is additionally provided with special-shaped slide rail and cooling box, the outer side of the special-shaped slide rail is adapted to slide with drawing slide seat, the upper part of the cooling box is movably installed with cooling fan, the two side surfaces of the cooling box are respectively provided with feeding groove and discharging groove, the special-shaped slide rail is arranged in the inner side of the feeding groove and the discharging groove, the inner cavity of the cooling box is additionally provided with air guide box, the inner part of the air guide box is respectively provided with horizontal filter screen, special-shaped filter plate and arched air guide plate, the lower end of the arched air guide plate is fixedly connected with support angle plate fixedly connected with the lower end side wall of the cooling box, the lower side of the support angle plate is provided with wind impact arc plate.

[0006] Preferably, the lower side of the cooling fan is additionally provided with edge frame strip, the inner wall of the edge frame strip is provided with concave edge groove, and the concave edge groove is used for limiting the installation of the cooling fan as a whole.

[0007] Preferably, the two sides of the cooling fan are provided with a "Z"-shaped fixing seat fixedly connected with the upper top surface of the cooling box body, a square groove is formed in the inner wall of the upper end of the "Z"-shaped fixing seat, a "T"-shaped connecting plate is slidably connected with the inner wall of the square groove, and a pull column is fixedly added to the upper end of the "T"-shaped connecting plate.

[0008] Preferably, the lower surface of the pull column is fixedly connected with a return spring and a guide slide column, the other end of the return spring is fixedly connected with the upper surface of the "Z"-shaped fixing seat, the outer surface of the guide slide column is slidably connected with the inner wall of the upper end of the "Z"-shaped fixing seat, a trapezoidal inlaid plate is fixedly added to the end of the guide slide column away from the pull column, and the lower outer surface of the trapezoidal inlaid plate is movably inserted with the inner wall of the concave side groove.

[0009] Preferably, the upper end of the air guide box is throughly connected with the lower end output end of the cooling fan, the outer surfaces of the horizontal filter screen plate and the profiled filter plate are respectively clampedly connected with the inner wall of the air guide box, and the profiled filter plate has a structure protruding upward.

[0010] Preferably, the arched air guide plate is arranged directly below the profiled filter plate, an air inlet straight pipe is throughly connected with the inner wall of the upper end of the arched air guide plate, a blowing hopper is throughly connected with the output end of the air inlet straight pipe, the air inlet straight pipe and the blowing hopper are integrally stamped, and the air inlet straight pipe and the blowing hopper are arranged in an equidistant array around the curved surface of the arched air guide plate.

[0011] Preferably, the support angle plates are arranged at the lower sides of the arched air guide plate, the outer sides of the support angle plates are additionally provided with flow guide inclined surfaces, the support angle plates are arranged in two groups, the two groups of support angle plates are symmetrically distributed about the central axis of the arched air guide plate, the lower ends of the support angle plates are connected with mounting rotating seats, the inner sides of the mounting rotating seats are rotatably mounted with the inner walls of one end of the air impact arc plate, the lower end of the air impact arc plate is fixedly connected with a curved telescopic strip and a spiral variable hinge strip, and the other ends of the curved telescopic strip and the spiral variable hinge strip are fixedly connected with the inner side walls of the cooling box body.

[0012] On the other hand, a preparation process of high-precision low-bubble cold-drawn steel includes the following steps:

[0013] Step one: clamp the round steel port of the cold-drawn steel through a steel clamp;

[0014] Step two: drive the steel pulling seat to move on the upper end of the profiled slide rail, and the cold-drawn steel is bent and drawn along the pulling track;

[0015] Step three: the cold-drawn steel passes through the inside of the cooling equipment to assist the accelerated setting of the cold-drawn steel;

[0016] Step four: the external air is uniformly blown on the surface of the cold-drawn steel after purification treatment.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The high-precision low-bubble cold-drawing steel forming equipment provided by the present application has good quality of the formed cold-drawing steel, the drawing sliding seat is arranged at the upper end of the special-shaped sliding rail, and the cold-drawing steel port is drawn to perform drawing along the sliding track, the cold-drawing steel is uniformly cooled by the gathered cold air inside the cooling box, and the auxiliary shaping is performed, the filter assembly additionally arranged at the upper end of the arched air deflector blocks the impurities from the outside, the cold-drawing steel formed by cooling is prevented from being affected by dust adhesion, and the problems of the traditional cold-drawing steel forming device are solved, i.e., the dust in the outside environment directly contacts the surface of the steel without being treated when the air is directly blown to cool during the cooling forming, the surface often has phenomena such as sand eye, impurities, and hollow bubbles, which greatly affects the quality of the cold-drawing steel product and reduces the forming precision. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the present application;

[0021] Figure 3 It is a disassembled sectional view structural schematic diagram of the cooling fan and the cooling box of the present application;

[0022] Figure 4 It is a disassembled sectional view structural schematic diagram of the cooling fan and the cooling box of the present application;

[0023] Figure 5 It is a bottom view three-dimensional sectional view structural schematic diagram of the arched air deflector of the present application;

[0024] Figure 6 It is a partial three-dimensional structural schematic diagram of the air blowing hopper of the present application;

[0025] Figure 7 It is a connecting structural schematic diagram of the support angle plate and the air impact arc plate of the present application;

[0026] Figure 8 It is an enlarged structural schematic diagram of A of the present application; Figure 7

[0027] Figure 9 It is a connecting structural schematic diagram of the cooling fan and the cooling box of the present application;

[0028] Figure 10 It is an enlarged structural schematic diagram of B of the present application Figure 9

[0029] Figure 11 It is a flow chart of the present application.

[0030] ​​In the figure: 1, cold-drawing steel cooling forming equipment body; 11, profiled slide rail; 12, drawing slide base; 2, cooling box body; 21, air guide box; 3, cooling fan; 31, "Z"

[0031] type fixing base; 32, pull column; 33, "T" type connecting plate; 34, reset spring; 35, guide slide column; 36, trapezoidal inlay plate; 4, horizontal filter screen plate; 5, profiled filter plate; 6, arched air guide plate; 61, air inlet straight pipe; 62, air blowing hopper; 63, elastic wire strip; 64, air resistance inclined plate; 7, support angle plate; 71, mounting rotating base; 72, curved telescopic strip; 73, helical shape variable hinge strip; 8, wind hitting arc plate; 81, air guide groove. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the following will further describe the embodiments of the present application in combination with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all the embodiments, only to explain the embodiments of the present application, and not used to limit the embodiments of the present application, all other embodiments obtained by the person skilled in the art without doing creative work, belong to the scope of protection of the present application.

[0033] Embodiment one

[0034] Please refer to Figures 1-11The application provides a technical scheme: a high-precision low-bubble cold-drawing type steel forming equipment, which comprises a cold-drawing type steel cooling forming equipment body 1 for cooling and shaping treatment of the cold-drawing type steel, and a special-shaped sliding rail 11 and a cooling box body 2 are additionally arranged on the upper portion of the cold-drawing type steel cooling forming equipment body 1, a drawing sliding seat 12 is slidably arranged on the outer side surface of the special-shaped sliding rail 11, a cooling fan 3 is movably arranged on the upper portion of the cooling box body 2, an inlet groove and an outlet groove are respectively arranged on the two side surfaces of the cooling box body 2, the special-shaped sliding rail 11 is arranged in the inner sides of the inlet groove and the outlet groove, a wind guide box 21 is additionally arranged in the inner cavity of the cooling box body 2, horizontal filter screen plates 4, special-shaped filter plates 5 and arched wind guide plates 6 are respectively arranged in the inner portion of the wind guide box 21, the lower end of the arched wind guide plate 6 is fixedly connected with a support angle plate 7 which is fixedly connected with the lower end side wall of the cooling box body 2, a wind impact arc plate 8 is arranged on the lower side of the support angle plate 7, an edge frame strip is additionally arranged on the lower side of the cooling fan 3, a concave edge groove is arranged on the inner wall of the edge frame strip, the concave edge groove is used for limiting the installation of the cooling fan 3, the drawing sliding seat 12 is arranged on the upper end of the special-shaped sliding rail 11, the cold-drawing type steel port is drawn along the sliding track to be drawn, the cold-drawing type steel is uniformly cooled by the gathered cold air in the cooling box body 2 and is shaped, the filter assembly additionally arranged on the upper end of the arched wind guide plate 6 blocks the impurities in the external environment, the cold-drawing steel which is cooled and formed is prevented from being affected by dust adhesion, the problem that the traditional cold-drawing type steel forming device directly blows cold air to cause the external dust to directly contact the steel surface without being treated, the surface often appears sand eyes, impurities, hollow bubbles and other phenomena and the quality of the cold-drawing type steel product is easily affected and the forming precision is reduced is further avoided.

[0035] Example two

[0036] On the basis of example one, the two sides of the cooling fan 3 are provided with a "Z"-type fixing seat 31 which is fixedly connected with the upper top surface of the cooling box body 2, a square groove is arranged on the upper end inner wall of the "Z"-type fixing seat 31, a "T"-type connecting plate 33 is slidably connected with the inner wall of the square groove, a pull column 32 is additionally arranged on the upper end of the "T"-type connecting plate 33, a reset spring 34 and a guide sliding column 35 are fixedly connected with the lower surface of the pull column 32, the other end of the reset spring 34 is fixedly connected with the upper surface of the "Z"-type fixing seat 31, the outer surface of the guide sliding column 35 is slidably connected with the upper end inner wall of the "Z"-type fixing seat 31, a trapezoidal inlaid plate 36 is additionally arranged on the end of the guide sliding column 35 which is away from the pull column 32, the lower side outer surface of the trapezoidal inlaid plate 36 is movably inserted into the inner wall of the concave edge groove, the upper end of the wind guide box 21 is throughly connected with the lower end output end of the cooling fan 3, the outer surfaces of the horizontal filter screen plates 4 and the special-shaped filter plates 5 are clampedly connected with the inner wall of the wind guide box 21, and the special-shaped filter plate 5 is in a structure which is convex upward.

[0037] As the attached Figures 9-10As shown, at this time, the inner wall of the frame bar connected at the lower end of the cooling fan 3 is provided with a concave side slot corresponding to the insertion of the guide slide column 35, realizing the limiting installation of the whole cooling fan 3. Manually pulling the two groups of pull columns 32 drives the vertical sliding of the "T" type connecting plate 33 in the square slot of the inner wall of the "Z" type fixing seat 31. At this time, the guide slide column 35 symmetrically distributed about the center line of the "T" type connecting plate 33 synchronously slides on the inner wall of the "Z" type fixing seat 31. At this time, the return spring 34 is elastically stretched under the influence of the upward pulling force, and then the guide slide column 35 rises. Then the cooling fan 3 is slid and pushed between the inner sides of the two groups of "Z" type fixing seats 31 to the upper end of the cooling box body 2. At this time, the guide slide column 35 is aligned with the concave side slot. Then the fingers are released, and the return spring 34 is reset under the influence of inertia. At this time, the guide slide column 35 and the concave side slot are embedded and installed, which can realize the quick assembly of the cooling fan 3. The cooling fan 3 and the upper top of the cooling box body 2 are designed as a detachable structure, which is convenient for the quick maintenance of the internal elements of the cooling fan 3, and can realize the laying of the dustproof net in the upper end of the cooling fan 3 and the maintenance and cleaning of the horizontal filter screen plate 4 and the special-shaped filter plate 5 in the cooling box body 2.

[0038] Example three

[0039] On the basis of example two, the arched air deflector 6 is arranged at the position directly below the special-shaped filter plate 5. The upper end inner wall of the arched air deflector 6 is connected with an air inlet straight pipe 61 in a penetrating manner. The output end of the air inlet straight pipe 61 is connected with a blowing hopper 62 in a penetrating manner. The air inlet straight pipe 61 and the blowing hopper 62 are integrally stamped. The air inlet straight pipe 61 and the blowing hopper 62 are arranged in an equidistant array around the curved surface of the arched air deflector 6. The inner cavity side wall of the blowing hopper 62 is hinged with a resilient wire 63. The other end of the resilient wire 63 is rotatably connected with a wind resistance inclined plate 64.

[0040] As shown in the accompanying drawings Figures 5-6 The arched air deflector 6 is arranged at the position directly below the special-shaped filter plate 5 and is arranged in an arched structure. The air inlet straight pipe 61 and the blowing hopper 62 are evenly arranged on the arched air deflector 6. The cold air output by the cooling fan 3 is filtered and purified by the horizontal filter screen plate 4 and the special-shaped filter plate 5 once, so as to avoid bringing impurities and dust in the external air into the inside of the cooling box body 2 to affect the surface forming quality of the cold-drawn profile steel. At this time, the cold air enters the lower part of the arched air deflector 6 through a plurality of air inlet channels, so as to realize the uniform cooling of the cold-drawn profile steel and improve the forming efficiency. The wind resistance inclined plate 64 in the inner cavity of the blowing hopper 62 shakes under the action of the continuous input of cold air at the input port, so as to make the imported cold air enter the lower part of the arched air deflector 6 from multiple directions, so as to realize the overall cooling of the surface of the cold-drawn profile steel.

[0041] Example four

[0042] On the basis of embodiment three, the support gusset 7 is arranged at the lower two sides of the arched air deflector 6, the outer side of the support gusset 7 is additionally provided with a flow guide slope, the support gusset 7 is arranged in two groups, the two groups of support gussets 7 are symmetrically distributed about the center axis of the arched air deflector 6, the lower end of the support gusset 7 is connected with a mounting rotating seat 71, the inner side of the mounting rotating seat 71 is rotatably connected between one end of the inner wall of the wind impact arc plate 8, the lower end of the wind impact arc plate 8 is fixedly connected with a curved telescopic strip 72 and a spiral hinge strip 73, and the other end of the curved telescopic strip 72 and the spiral hinge strip 73 is fixedly connected with the inner side wall of the cooling box body 2, the upper end inner wall of the wind impact arc plate 8 is provided with a wind guide groove 81, and the wind guide groove 81 is arranged in an inclined and equidistant array on the surface of the wind impact arc plate 8;

[0043] As shown in the accompanying drawings Figures 7-8 , at this time the upper end of the wind impact arc plate 8 is subjected to the action of the output cold air above, the wind impact arc plate 8 will produce a certain inclination, and the rotating shaft at one end of the mounting rotating seat 71 connected therewith rotates, when the plate body of the wind impact arc plate 8 is inclined downward under the action of the cold air pressure above, the curved telescopic strip 72 and the spiral hinge strip 73 are compressed and deformed to a certain extent, but due to the fact that they have a certain supporting capacity, they will elastically reset the whole wind impact arc plate 8 upward, rebound the cold air continuously impacting above, and at this time the wind guide grooves 81 evenly arranged are used to accelerate the flow speed of the cold air flow, and the cold air penetrating the groove wall of the wind guide groove 81 is drilled into the lower side of the cold-drawn steel to avoid the situation that the lower side of the cold-drawn steel is not uniformly cooled.

[0044] Embodiment five

[0045] A preparation process of a high-precision low-bubble cold-drawn steel includes the following steps:

[0046] Step one: clamp the round steel port of the cold-drawn steel through a steel clamp;

[0047] Step two: drive the steel drawing seat to move on the profiled slide rail profiled slide rail 11 at the upper end, and the cold-drawn steel is bent and drawn along the pulling track;

[0048] Step three: the cold-drawn steel penetrates the inside of the cooling equipment to assist the accelerated setting of the cold-drawn steel;

[0049] Step four: the external air is blown evenly on the surface of the cold-drawing profiled steel after purification. In actual use, first, the round steel port of the cold-drawing profiled steel is clamped by the inner clamps of the drawing sliding seat 12, then the driving assembly is driven to pull on the surface of the profiled sliding rail 11, the drawing sliding seat 12 is erected on the upper end of the profiled sliding rail 11, the cold-drawing profiled steel port is pulled along the sliding track to draw, the cold-drawing profiled steel is uniformly cooled by the gathered cold air inside the cooling box 2, and the shaping is assisted. The filter assembly added on the upper end of the arched air deflector 6 blocks the impurities from the outside. Then, the recessed edge groove corresponding to the guide slide column 35 is opened on the inner wall of the connecting frame strip at the lower end of the cooling fan 3, the whole cooling fan 3 is installed and limited, two groups of pulling columns 32 are manually pulled, the "T"-shaped connecting plate 33 is vertically slid on the inner wall of the square groove opened on the upper part of the "Z"-shaped fixing seat 31, at this time, the guide slide columns 35 symmetrically distributed about the center line of the "T"-shaped connecting plate 33 are synchronously slid on the inner wall of the "Z"-shaped fixing seat 31, and at this time, the return spring 34 is elastically stretched under the influence of the upward pulling force, and then the guide slide columns 35 are lifted. Then, the cooling fan 3 is slid and pushed between the inner sides of the two "Z"-shaped fixing seats 31 to the upper end air inlet port of the cooling box 2, at this time, the guide slide columns 35 are aligned with the recessed edge groove, the fingers are released, the return spring 34 is reset under the influence of inertia, at this time, the guide slide columns 35 and the recessed edge groove are embedded and installed, the cooling fan 3 can be quickly assembled. The cooling fan 3 and the upper top of the cooling box 2 are designed as a detachable structure, which is convenient for the quick maintenance of the internal elements of the cooling fan 3, and can realize the maintenance and cleaning of the dustproof net laid on the upper end air inlet of the cooling fan 3, the horizontal filter screen plate 4 and the profiled filter plate 5 inside the cooling box 2. In addition, the arched air deflector 6 is arranged below the profiled filter plate 5 and is in an arched structure, the air inlet straight pipe 61 and the air blowing hopper 62 are evenly arranged on the arched air deflector 6, the cold air output by the cooling fan 3 is filtered and purified by the horizontal filter screen plate 4 and the profiled filter plate 5 once, so as to avoid the impurities and dust in the external air from entering the inside of the cooling box 2 and affecting the forming quality of the cold-drawing profiled steel surface. At this time, the cold air enters the lower part of the arched air deflector 6 through multiple air inlet channels, the cold-drawing profiled steel is uniformly cooled, and the forming efficiency is improved. The air blowing hopper 62 inner cavity air resistance inclined plate 64 shakes under the action of the continuously input cold air at the input port, so that the input cold air enters the lower part of the arched air deflector 6 from multiple directions, the cold-drawing profiled steel surface can be fully cooled. In addition, the upper end of the air blowing arc plate 8 is affected by the output cold air, the air blowing arc plate 8 will tilt, the rotating shaft connected with the one end of the rotating seat 71 rotates, when the air blowing arc plate 8 is tilted downward under the action of the upper cold air pressure, the curved elastic strip 72 and the spiral variable hinge strip 73 are compressed and deformed to a certain extent, but due to its certain supporting capacity, the air blowing arc plate 8 is elastically reset upward,The cold air continuously impacting upward is bounced back, and at this time, the air guide groove 81 is uniformly opened to accelerate the circulation speed of the cold air flow, and the cold air penetrating through the groove wall of the air guide groove 81 is drilled into the lower part of the cold-drawn profile steel, thereby completing the overall cooling and forming of the cold-drawn profile steel.

[0050] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and specific embodiments of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A high-precision, low-bubble cold-drawn steel forming equipment, comprising a cold-drawn steel cooling and forming equipment body (1) for cooling and shaping cold-drawn steel, characterized in that: The upper part of the main body (1) of the cold-drawn steel cooling forming equipment is provided with a special-shaped slide rail (11) and a cooling box (2). The outer side of the special-shaped slide rail (11) is adapted to slide with a drawing sliding base (12). A cooling fan (3) is movably installed on the upper part of the cooling box (2). The two sides of the cooling box (2) are respectively provided with a feeding groove and a discharging groove. The special-shaped slide rail (11) passes through the inner side of the feeding groove and the discharging groove. The inner cavity of the cooling box (2) is provided with a guide box (21). The interior of the guide box (21) is provided with a horizontal filter screen plate (4), a special-shaped filter plate (5) and an arched guide plate (6). The lower end of the arched guide plate (6) is fixedly connected to a support corner plate (7) fixedly connected to the lower side wall of the cooling box (2). The lower side of the support corner plate (7) is provided with a wind-collision arc plate (8). The arched air guide plate (6) is positioned directly below the irregularly shaped filter plate (5). An air inlet straight pipe (61) is connected through the upper inner wall of the arched air guide plate (6). The output end of the air inlet straight pipe (61) is connected through to a blower (62). The air inlet straight pipe (61) and the blower (62) are integrally stamped together. The air inlet straight pipe (61) and the blower (62) are arranged in an equidistant array around the curved surface of the arched air guide plate (6). A spring-loaded wire (63) is hinged to the inner side wall of the blower (62). The other end of the spring-loaded wire (63) is rotatably connected to a wind-blocking inclined plate (6). 4) The air inlet straight pipe (61) and the air blower (62) are evenly installed on the arched air guide plate (6). The cold air output by the cooling fan (3) passes through the horizontal filter screen (4) and the special-shaped filter plate (5) for filtration and purification. The cold air enters the lower part of the arched air guide plate (6) through multiple air inlet channels. Under the action of continuous input of cold air at the input port, the wind-blocking inclined plate (64) of the inner cavity of the air blower (62) shakes the elastic wire (63) connected to the wind-blocking inclined plate (64) of the inner wall of the air blower (62), and the cold air is introduced into the lower part of the arched air guide plate (6) from multiple directions, so as to achieve comprehensive cooling of the surface of the cold-drawn steel. The supporting corner plates (7) are located on both sides below the arched air guide plate (6). A guide slope is added to the outer side of the supporting corner plates (7). Two sets of supporting corner plates (7) are arranged, symmetrically distributed about the central axis of the arched air guide plate (6). A mounting pivot (71) is connected to the lower end of each supporting corner plate (7). The inner side of the mounting pivot (71) is rotatably installed between the inner side of the mounting pivot (71) and the inner wall of one end of the impact arc plate (8). A curved telescopic strip (72) and a spiral variable hinge strip (73) are fixedly connected to the lower end of the impact arc plate (8). The other ends of the curved telescopic strip (72) and the spiral variable hinge strip (73) are connected to the cooling box body (…). 2) The inner side wall is fixedly connected; the upper end of the impact wind arc plate (8) is subjected to the cold air output from above, and a certain tilt is generated. The rotating shaft of the rotating seat (71) connected to it rotates. When the plate body of the impact wind arc plate (8) tilts downward under the pressure of the cold air above, the curved telescopic strip (72) and the spiral deformable hinge strip (73) are subjected to a certain degree of compression deformation. Since it has a certain support capacity, it will elastically reset the impact wind arc plate (8) as a whole upward and rebound the cold air that is continuously impacting from above. At this time, the cold air flow speed is accelerated by the uniformly opened air duct (81), and the cold air passing through the duct wall of the air duct (81) is drilled into the lower part of the cold drawn steel.

2. The high-precision, low-bubbling cold-drawn steel forming equipment according to claim 1, characterized in that: An edge frame is added to the lower side of the cooling fan (3), and a concave side groove is preset on the inner wall of the edge frame. The concave side groove is used to limit the installation of the cooling fan (3) as a whole.

3. The high-precision, low-bubbling cold-drawn steel forming equipment according to claim 2, characterized in that: The cooling fan (3) is provided with "Z"-shaped fixing seats (31) on both sides, which are fixedly connected to the top surface of the cooling box (2). The upper inner wall of the "Z"-shaped fixing seat (31) is provided with a square groove, and a "T"-shaped connecting plate (33) is slidably connected to the inner wall of the square groove. A tie column (32) is fixedly added to the upper end of the "T"-shaped connecting plate (33).

4. The high-precision, low-bubbling cold-drawn steel forming equipment according to claim 3, characterized in that: A return spring (34) and a guide slide (35) are fixedly connected to the lower surface of the pull column (32). The other end of the return spring (34) is fixedly connected to the upper surface of the "Z"-shaped fixing seat (31). The outer surface of the guide slide (35) is slidably connected to the upper inner wall of the "Z"-shaped fixing seat (31). A trapezoidal insert plate (36) is fixedly added to the end of the guide slide (35) away from the pull column (32). The lower outer surface of the trapezoidal insert plate (36) is movably inserted into the inner wall of the concave side groove.

5. The high-precision, low-bubbling cold-drawn steel forming equipment according to claim 1, characterized in that: The upper end of the air guide box (21) is connected to the lower output end of the cooling fan (3). The outer surfaces of the horizontal filter screen (4) and the irregular filter plate (5) are respectively embedded in the inner wall of the air guide box (21), and the irregular filter plate (5) has an upward convex structure.

6. A process for preparing high-precision, low-bubble cold-drawn steel profiles, which is based on the high-precision, low-bubble cold-drawn steel profile forming equipment described in any one of claims 1-5, characterized in that: The manufacturing process of this high-precision, low-bubble cold-drawn steel profile includes the following steps: Step 1: Clamp the round steel end of the cold-drawn steel section using a steel clamping fixture; Step 2: The driving force pulls the steel drawing machine base to move on the upper end of the special-shaped slide rail, and the cold-drawn steel bends and is pulled along the pulling trajectory; Step 3: Cold-drawn steel sections are inserted into the cooling equipment to accelerate the shaping of the cold-drawn steel sections; Step 4: Purified external air is evenly blown onto the surface of the cold-drawn steel.

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