CN220049927U - Simple air-cooled cooling frame for hot forging - Google Patents

Abstract

The utility model belongs to the field of tool manufacturing, and particularly relates to a simple air-cooling frame for hot forging. Comprising the following steps: the main board (7) and the single-point supporting device (2), wherein the main board (7) comprises supporting legs and supporting surfaces, the supporting surfaces are fixed on the supporting legs, and the height H1 of the supporting surfaces from the bottom surface is (0.35-0.5) multiplied by the total height of the forging; rectangular holes (1) are formed in the supporting surface; the length L1 meets the thickness of L1=alpha multiplied by the thickness of the forging clamped at the rectangular hole part, and alpha is larger than 1.1; the single-point supporting device (2) comprises a support, a vertex position (3) and a handle (4), wherein the support is fixed on a supporting surface of a main board (7), a transverse through groove is formed in the upper end of the support, the handle (4) is of an L shape, one end of the handle (4) penetrates through the through groove, and the end face of the handle (4) penetrating through the through groove is the vertex position (3).

Description

Simple air-cooled cooling frame for hot forging

Technical Field

The utility model belongs to the field of tool manufacturing, and particularly relates to a simple air-cooling frame for hot forging.

Background

For forgings, the cooling effect after forging often affects the formation of internal structures to a certain extent, and the structure morphology determines the performance of the forgings and the final service life thereof. Particularly, for the titanium alloy forging piece needing air cooling, the better the air cooling effect after forging is, the more uniform the internal structure is, and finally the more fully satisfied the strength use requirement is. In addition, for thin web forgings, the cooling effect can also have a certain influence on the magnitude of the warping amount of the thin web forgings, and when the cooling is improperly controlled and the warping amount is too large, a certain processing risk exists in the follow-up process.

For forgings requiring air cooling after hot forging, the forgings often need to be erected so that all parts in the forgings can be exposed to air as much as possible, and therefore all parts can be covered by a blowing device, and finally the uniformity of cooling speed is ensured. In actual production, the appearance of the forging piece is different, and especially for some flat and thin web type forging pieces with larger width and smaller thickness, if the forging piece is not used, only the forging piece can be prone to be on the ground when being cooled, and the forging piece can not be vertically cooled by itself due to the influences of the demolding gradient, the irregular distribution of burrs and the like on the outer side of the die forging piece after different fires, so that 50% of the area can not be exposed in the air. In addition, if one surface of the forging piece is in direct contact with the ground or in contact with a corresponding cooling device in a large area, the heat dissipation speed of each part of the forging piece is inconsistent, and the internal stress release of the metal is not uniform, so that the phenomenon that the forging piece is warped and the subsequent processing is difficult is caused. Finally, after hot forging, the forging has a higher temperature, which increases a certain difficulty for the actual operation on site, and therefore, the use method of the corresponding cooling device is not excessively complex.

Therefore, for the forgings needing air cooling, the forgings need to be suspended and supported by a special tool, and the forgings are relatively simple and convenient to operate in practice.

Disclosure of Invention

The utility model aims to: the simple air-cooling frame for hot forging can suspend and erect a forging, improves the uniformity of the cooling speed of the forging, and is particularly beneficial to post-forging air cooling of flat and thin web forgings.

The technical scheme is as follows:

a simple air-cooled cooling frame for hot forging, comprising: the main board 7 and the single-point supporting device 2, wherein the main board 7 comprises supporting legs and supporting surfaces, the supporting surfaces are fixed on the supporting legs, and the height H1 of the supporting surfaces from the bottom surface is (0.35-0.5) multiplied by the total height of the forging; the supporting surface is provided with a rectangular hole 1; the length L1 meets the thickness of L1=alpha multiplied by the thickness of the forging clamped at the rectangular hole part, and alpha is larger than 1.1; the single-point supporting device 2 comprises a support, a vertex position 3 and a handle 4, wherein the support is fixed on a supporting surface of a main board 7, a transverse through groove is formed in the upper end of the support, the handle 4 is L-shaped, one end of the handle 4 penetrates through the through groove, and the end face of the handle 4 penetrating through the through groove is the vertex position 3.

Further, a plurality of clamping grooves 6 are formed in the upper side face of the through groove, and a cross bar 5 is fixed to the portion, penetrating through the through groove, of the handle 4.

Further, the plurality of clamping grooves 6 are staggered on both sides.

Further, the width B1 of the rectangular hole 1 is such that about 2/3 of the height of the forging is caught on the upper surface of the supporting surface.

Further, the minimum adjustable distance is 1/2 of the width of the card slot 6.

Further, α=1.1 to 1.5.

The beneficial effects are that:

1, the air-cooled cooling frame manufactured by the utility model can vertically and vertically support the forge piece when in cooling, and more than 90% of the whole area is exposed in the air, thereby greatly improving the coverage and the uniformity when in cooling when in blowing, and finally obtaining a relatively uniform structure and higher service performance;

2, for thin web forgings which are easy to warp, the cooling frame formulated by the utility model can greatly reduce the deformation after hot forging, so that the cooling frame fully meets the subsequent processing requirements;

the manufacturing method of the air-cooled cooling frame has small technical requirements, is simple and convenient to operate when in actual hot forging use, and has strong overall practicability;

the utility model has a certain reference function for manufacturing and improving the heating frame of the forging part which needs to be supported for heating.

Drawings

FIG. 1 is a schematic overall outline of a cooling rack;

FIG. 2 is a schematic illustration of a single point support device for a cooling rack;

FIG. 3 is a schematic illustration of the shape of a single point support device clamping groove of the cooling rack;

FIG. 4 is a schematic overall dimension of the cooling rack;

FIG. 5 is a schematic illustration of the dimensions of a single point support device card slot of the cooling rack;

FIG. 6 is a schematic representation of the placement of a forging on a cooling rack;

wherein, rectangular hole 1, single-point strutting arrangement 2, summit position 3, handle 4, cross bar 5, draw-in groove 6, mainboard 7, lightening hole 8.

Detailed Description

The air-cooled cooling frame formulated by the utility model is shown in figures 1-6.

During cooling, one end of the forging with a narrower width or one corner of the forging is erected in a rectangular hole of a cooling frame (shown as 1 in figure 1).

The height H1 of the cooling rack and the width B1 and the length L1 of the rectangular hole are formulated according to the actual appearance of the corresponding forge piece. When the width of the rectangular hole is formulated, the forging piece is clamped on the upper surface of the cooling frame about 2/3 of the height (so that most of the area of the forging piece can be exposed in the air), and the distribution condition of the width of the burr of the forging piece after each fire time is considered besides the measurement of the width change condition of the forging piece. The height of the cooling rack should then be greater than 1/3 of the total forging height.

H1: (0.35-0.5) x total height of the forging; l1: the thickness of the alpha multiplied by the forging piece clamped at the rectangular hole part is the same as that of the forging piece; α=1.1 to 1.5, note: the more the die forging is performed, the larger the alpha value is.

After the forging is set up in the rectangular hole, it is slightly inclined to one side because of the 'head-to-foot weight', and at this time, the forging can be fixed on the cooling rack by using a corresponding single-point supporting device (such as 2 in fig. 1). The single-point supporting device not only stabilizes the forging, but also can reduce the contact area between the forging and the cooling tool. When the width of the forging exceeds 1m or the weight exceeds 100Kg, at least 2 single-point supporting devices should be manufactured.

The height of the single point support (e.g., H2 in fig. 1) is also determined according to the external dimensions of the forging:

h2 = (1/3-1/2) x total height of forging.

In actual production, because the forging shape is complicated, thickness variation is great, and under-voltage after hot forging every turn is different, the deckle edge also distributes differently, then, the inclination behind the forging stands in the rectangular hole also has the difference, and this just leads to the forging apart from single-point strutting arrangement's distance inconsistent. For this purpose, the single point support device can be designed to be movable (as shown in fig. 2) so that the position of the apex (as shown at 3 in fig. 2) for supporting the upper end of the forging can be adjusted back and forth.

The vertex area of the single-point supporting device is not too large under the condition of meeting the overall supporting strength:

φ＝(10～30)mm

note that: the smaller the weight of the forging piece is, the smaller the phi value is.

When in use, the handle (4 in fig. 2) of the adjusting rod is rotated left and right to move forwards and backwards, so that the adjusting cross bar (5 in fig. 2) is positioned in the clamping grooves (6 in fig. 2) of different gears, and the vertex position of the adjusting rod is enabled to move forwards and backwards at a relatively small distance. In order to shorten the single adjustment distance and increase the overall adjustment efficiency, both sides of the clamping groove can be designed to be left and right staggered (as shown in fig. 3), and when the adjusting cross bar moves from the clamping groove Y to the clamping groove Z, the movement distance of the top point of the adjusting bar is only L2 of (1/2). For example, when L2 is 10mm, the single adjustment distance is only-5 mm. In addition, the larger the height and size change of the forging piece is, the more the die forging firing time is, the corresponding clamping grooves are more, and the final adjustment amplitude is larger.

In the actual forging process, the die forgings are often produced in batch, and the cooling rack in fig. 1 is only a cooling device for a single forging, so that in order to improve the production efficiency, a plurality of rectangular holes and single-point supporting devices can be arranged side by side on one rack in the actual manufacturing process. In order to avoid the heat dissipation effect between the forgings, two adjacent devices are required to be pulled apart by a certain distance in the front-back direction and the left-right direction.

In addition, in order to reduce the weight of the cooling rack and increase the heat dissipation area around the forging, and at the same time, under the condition of ensuring the use strength of the cooling rack, rectangular or circular lightening holes (such as 8 in fig. 1) can be "dug" on the main board (such as 7 in fig. 1) of the cooling rack during actual manufacturing.

Examples:

certain machine titanium alloy forgings, material marks: TA15M, forging overall dimension: 565mm (length) ×150-550 mm (width) ×58-126 mm (thickness), forging weight: 62.3Kg, forging and forming: 3, forming by fire.

The cooling mode of the forging piece after die forging: and (5) air cooling.

Sizing: the size of the cooling device for designing a single forging is shown in fig. 3 and 4 according to the outline size of the forging and the forming mode thereof. According to the weight and the width dimension of the forging, only one single-point supporting device is designed on the cooling rack. Because the thickness and the size of the forging are changed greatly, the fire is more, the adjustment range in the actual use process is relatively larger, 13 clamping grooves are specially set, the single adjustment range of the vertex of the adjusting rod is about 6mm, and the overall adjustment range is about 100mm.

And (3) actual manufacturing: the cooling frame main board adopts a 45# steel plate with the thickness of 30mm, the adjusting rod adopts a 45# steel rod with the diameter of 20mm, the clamping groove main body adopts a 45# steel plate with the thickness of 5mm, and the adjusting cross bar adopts a 45# steel rod with the diameter of 7 mm. The whole cooling rack material object is spliced and manufactured in a machining, cutting and welding mode.

The actual use is as follows:

step one: before forging, arranging a required air cooling frame in advance according to the number of the forgings and the positions of the blowing devices;

step two: after the forging is deformed on the forging hammer and the current firing time is finished, the forging is taken out from the die cavity by the material loading and taking machine and is quickly transferred to the position of the cooling frame;

step three: rotating a manipulator of the material loading and unloading machine to enable the small end (the narrower width side) of the forging piece to face downwards and slowly transferring the forging piece into a rectangular hole of the cooling frame;

step four: adjusting the placing position of the forging piece in the rectangular hole to slightly incline to one side of the single-point supporting device;

step five: and the adjusting rod is moved to adjust the position of the vertex of the adjusting rod, so that the whole forging piece can be stably erected on the cooling frame.

The final placement of the forging on the cooling rack is generally shown in FIG. 5. The figure shows that more than 90% of the area of the forging is exposed in the air, and the surface of the forging can be basically covered by the corresponding blowing device, so that the integral air cooling effect is greatly improved.

The using effect is as follows: after subsequent physicochemical verification, compared with the prior common bracket (the forge piece cannot be erected), the product after air cooling by using the special cooling frame has the advantages that the tensile strength is improved by 20-30 MPa, and meanwhile, other performance data and high-low power tissues meet the standard requirements. In addition, the integral warping amount of the forging is reduced by 2-5 mm compared with the prior art, and the subsequent processing risk is greatly reduced.

Claims (6)

1. A simple air-cooled cooling frame for hot forging, comprising: the main board (7) and the single-point supporting device (2), wherein the main board (7) comprises supporting legs and supporting surfaces, the supporting surfaces are fixed on the supporting legs, and the height H1 of the supporting surfaces from the bottom surface is (0.35-0.5) multiplied by the total height of the forging; rectangular holes (1) are formed in the supporting surface; the length L1 meets the thickness of L1=alpha multiplied by the thickness of the forging clamped at the rectangular hole part, and alpha is larger than 1.1; the single-point supporting device (2) comprises a support, a vertex position (3) and a handle (4), wherein the support is fixed on a supporting surface of a main board (7), a transverse through groove is formed in the upper end of the support, the handle (4) is of an L shape, one end of the handle (4) penetrates through the through groove, and the end face of the handle (4) penetrating through the through groove is the vertex position (3).

2. The simple air-cooled cooling frame for hot forging according to claim 1, wherein a plurality of clamping grooves (6) are provided on the upper side surface of the through groove, and a cross bar (5) is fixed to the portion of the handle (4) passing through the through groove.

3. The simple air-cooled cooling frame for hot forging according to claim 1, wherein the plurality of clamping grooves (6) are double-sided staggered.

4. A simple air-cooled cooling frame for hot forging according to claim 1, wherein the width B1 of the rectangular hole (1) is such that about 2/3 of the height of the forging is caught on the upper surface of the supporting surface.

5. A simple air-cooled cooling frame for hot forging according to claim 1, characterized in that the minimum adjustable distance is 1/2 of the width of the clamping groove (6).

6. The simple air-cooled cooling frame for hot forging according to claim 1, wherein α=1.1 to 1.5.