Forming tool suitable for double-rod flange type high-temperature alloy forgings

Abstract

The utility model discloses a forming tool suitable for double-rod flange type high-temperature alloy forgings. The forming tool comprises an outer cylinder, an upper die and a lower die. The outer cylinder is provided with a cavity used for forge piece forming, the cavity is a columnar cavity, the diameter of the cavity is gradually increased from bottom to top, and the upper end of the cavity is provided with a trumpet-shaped inclined face with an outward opening. The upper die and the lower die are the same in shape, a rod cavity is formed in each of the upper die and the lower die and used for forming two rods of the double-rod flange, the diameter of the rod cavity of the upper die is gradually increased from top to bottom, and the diameter of the rod cavity of the lower die is gradually increased from bottom to top. According to the tool, the forging allowance, the machining amount and the product percent of pass can be remarkably reduced, and the production efficiency is improved; by replacing the upper die and the lower die, double-rod flanges of different sizes can be produced, and the die cost is reduced.

Description

Technical Field

[0001] The utility model discloses a forming tool suitable for double-rod flange type high-temperature alloy forgings, belonging to the field of high-temperature alloy forging. Background Art

[0002] At present, forging of double-rod flange high-temperature alloy free forgings is difficult due to the characteristics of large material deformation resistance, large drop between the rod and the flange, and long rod. For this type of forgings, many forging plants usually use two methods: free forging and rod drawing or membrane forging. The free forging method usually stretches the two ends of the rod or one end of the rod (the other end is guaranteed by machining), or even directly forges into cylindrical forgings. This has the problem of large forging allowance, poor concentricity of the two rods, and the rod is prone to concave center during stretching or cracking due to low forging temperature. The membrane forging method has a large drop between the rod and the flange, and the height-to-diameter ratio of the blank is too large (usually reaching a height-to-diameter ratio of 4-5), which leads to instability of the blank during forming, resulting in eccentricity of the product, and the membrane mold is generally a special mold with high mold production costs. These problems seriously affect the product qualification rate and production efficiency. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model designs a forming tool, which can not only meet the forming requirements of double-rod flange forgings and solve the instability problem during the blank forming process, but also reduce the processing allowance of forgings, ensure the concentricity of the two rods, improve product qualification rate and production efficiency, and can be applied to the production of double-rod flanges of various specifications of high-temperature alloy difficult-to-deform metals to reduce mold costs.

[0004] The technical solution of the utility model is as follows:

[0005] The invention discloses a forming tool suitable for double-rod flange type high-temperature alloy forgings, which is adapted to a blank with an intermediate cylinder and gradually decreasing diameters at both ends.

[0006] The forming tooling includes an outer cylinder, an upper die and a lower die;

[0007] The outer cylinder is provided with a cavity for forging, the cavity is a columnar cavity, the diameter of which gradually increases from bottom to top, and a trumpet-shaped inclined surface opening outward is provided at the upper end;

[0008] The upper die and the lower die have the same shape, and a rod cavity is opened in the upper die and the lower die for forming the two rods of the double-rod flange. The diameter of the rod cavity of the upper die gradually increases from top to bottom, and the diameter of the rod cavity of the lower die gradually increases from bottom to top.

[0009] Preferably, chamfers are provided at the openings of the large diameters of the rod cavities of the upper and lower dies to assist in forming the arc sections at the connection between the rod and the flange of the double-rod flange.

[0010] Preferably, an inclined surface is provided on the outer side of the plane of the large diameter opening of the upper mold and the lower mold, and the angle of the inclined surface of the trumpet shape of the outer cylinder is consistent.

[0011] The beneficial effects of the utility model are:

[0012] 1. Significantly reduce forging allowance, machining amount and product qualification rate, and improve production efficiency;

[0013] 2. By replacing the upper and lower molds, it can be used for the production of double-rod flanges of different sizes, reducing mold costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the forming tooling of the utility model;

[0015] Figure 2 It is a blank drawing;

[0016] Figure 3 It is a schematic diagram of the structure of the outer cylinder;

[0017] Figure 4 It is a schematic diagram of the structure of the upper die and the lower die;

[0018] Figure 5 It is a forging forming process diagram;

[0019] Figure 6 This is the finished forging picture. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0021] like Figure 1 As shown, a forming tool suitable for double-rod flange type high-temperature alloy forgings is adapted to a blank 4 with an intermediate cylinder and gradually decreasing diameters at both ends, such as Figure 2 shown.

[0022] The forming tooling comprises an outer cylinder 1, an upper die 2 and a lower die 3;

[0023] The outer cylinder 1 is provided with a cavity 1-1 for forging, the cavity 1-1 is a columnar cavity, the diameter of which gradually increases from bottom to top, and a trumpet-shaped inclined surface 1-2 opening outward is provided at the upper end;

[0024] The upper mold 2 and the lower mold 3 have the same shape. A rod cavity 2-1 is opened in the mold of the upper mold 2 and the lower mold 3 for forming the two rods of the double-rod flange. The diameter of the rod cavity 2-1 of the upper mold 2 gradually increases from top to bottom, and the diameter of the rod cavity of the lower mold gradually increases from bottom to top.

[0025] Preferably, chamfers are provided at the large-diameter openings of the rod cavities 2-1 of the upper mold 2 and the lower mold 3 to help form arc sections at the connection between the rod and the flange of the double-rod flange.

[0026] Preferably, an inclined surface 2-2 is provided on the outer side of the plane of the large diameter opening of the upper mold 2 and the lower mold 3, and the angle is consistent with the horn-shaped inclined surface 1-2 of the outer cylinder.

[0027] like Figure 5 The figure shows the forging forming process. First, put the lower die 3 into the outer cylinder 1 and put it firmly on the equipment workbench. Put the lower end of the heated billet into the lower die 3 and put it firmly. Then use the operating machine to put the upper die 2 on the upper end of the billet. After it is firmly placed, the hammer head is pressed down to the forming height. The billet can be ejected from the die. The finished forging is as shown in the figure. Figure 6 shown.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tooling for forming double-rod flange high-temperature alloy forgings, characterized in that It includes an outer cylinder, an upper mold and a lower mold; The outer cylinder is provided with a cavity for forging, the cavity is a columnar cavity, the diameter of which gradually increases from bottom to top, and a trumpet-shaped inclined surface opening outward is provided at the upper end; The upper die and the lower die have the same shape, and a rod cavity is opened in the upper die and the lower die for forming the two rods of the double-rod flange. The diameter of the rod cavity of the upper die gradually increases from top to bottom, and the diameter of the rod cavity of the lower die gradually increases from bottom to top.

2. The tooling for forming double-rod flange high-temperature alloy forgings according to claim 1 is characterized in that Chamfers are provided at the large-diameter openings of the rod cavities of the upper die and the lower die to help form the arc section at the connection between the rod and the flange of the double-rod flange.

3. The tooling for forming double-rod flange high-temperature alloy forgings according to claim 1 is characterized in that The outer sides of the planes at the large diameter openings of the upper die and the lower die are provided with inclined surfaces, which are consistent with the angle of the trumpet-shaped inclined surface of the outer cylinder.

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