A high-temperature alloy casting hot straightening tool

Abstract

This invention discloses a hot straightening fixture for high-temperature alloy castings, comprising: a counterweight that can limit the downward displacement of the counterweight to straighten mounting edges A and B of the casting. The counterweight is placed on an N-shaped pressure block, and the limiting screw is correspondingly inserted into the limiting column groove on the bottom stepped straightening mold. The limiting screw of the counterweight is restricted by the limiting column groove and will not press the N-shaped pressure block excessively into the arc-shaped gradient contour of mounting edges A and B, thus solving the problem that unrestricted downward pressure of the counterweight plate would cause damage to the arc-shaped gradient contour of the casting.

Description

TECHNICAL FIELD

[0001] The application relates to a high-temperature alloy casting hot straightening tool and a casting production auxiliary equipment technology field. BACKGROUND

[0002] When defects of a high-temperature alloy cartridge-type casting are treated after production, deformation of mounting edges A31 and B32 of the casting is easily caused, and the mounting edges A31 and B32 need to be positioned by a hot straightening tool and then subjected to heat treatment and correction.

[0003] A large casting hot straightening method disclosed in Chinese Patent Publication No. CN112139294A is a prior art hot straightening tool, which is characterized in that one end of a supporting screw rod is fixedly connected with a base, the other end of the supporting screw rod is screwed with a locking nut through a pressing plate, a counterweight block is placed on the pressing plate, and the action force applied to the casting is increased through the counterweight block. Although the counterweight block is placed on the pressing plate to press the casting and then the casting is subjected to hot straightening, the pressing plate on which the counterweight block is placed is not limited to be pressed downward, and the mounting edges A31 and B32 of the casting 3 have circular-arc gradually-changing profiles, which causes the problem of damage to the circular-arc gradually-changing profiles of the casting. SUMMARY

[0004] To solve the above technical problems, the application provides a high-temperature alloy casting hot straightening tool.

[0005] The application is achieved by the following technical solutions.

[0006] The application provides a high-temperature alloy casting hot straightening tool, which comprises:

[0007] A bottom stepped straightening die, a plurality of spaced step rings are arranged in the middle of the concave top surface of the bottom stepped straightening die, and the plurality of spaced step rings are installed in cooperation with the bottom spaced grooves of the casting.

[0008] A limiting column, the limiting column is four spaced circumferential columns, and the limiting column is fixed to the top surface of the bottom stepped straightening die.

[0009] Further comprising an N-shaped pressing block clamped between the mounting edges A and B of the casting, the N-shaped pressing block is installed in cooperation with the mounting edges A and B at both ends to limit and correct tensioning.

[0010] Further comprising a counterweight block, and the counterweight block is externally fixed with a limiting screw rod.

[0011] Further comprising a wedge-shaped pad block installed at the bottom of the inner diameter surface of the mounting edge B to support.

[0012] The limiting column corresponds to the lifting hole.

[0013] The bottom stepped straightening die is provided with a lifting hole used for installing a screw rod in the later period to facilitate lifting in the later period.

[0014] The lifting holes are four and are arranged in a circumferential array on the outer periphery of the bottom stepped correction mold.

[0015] The N-shaped pressing blocks are multiple.

[0016] The limiting screws are four and are arranged in a circumferential array on the outer periphery of the counterweight block, and the four limiting screws correspond to the four limiting posts.

[0017] The beneficial effects of the present application are that the counterweight block is placed on the N-shaped pressing block, the limiting screw is correspondingly placed in the limiting post sliding groove on the bottom stepped correction mold, and the limiting screw of the counterweight block is limited by the limiting post sliding groove and cannot press the N-shaped pressing block to be excessively pressed into the arc gradually changing contour of the mounting edge A and the mounting edge B, thereby solving the problem that the pressing plate of the counterweight block is not limited to be pressed downward, which can cause damage to the arc gradually changing contour of the casting. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial cross-sectional view of a casting;

[0019] Figure 2 is a structure schematic diagram of the present application before the tooling is assembled;

[0020] Figure 3 is a structure schematic diagram of the bottom stepped correction mold of the present application;

[0021] Figure 4 is a structure schematic diagram of the present application after the tooling is assembled;

[0022] Figure 5 is a partial position cross-sectional view of a casting in the tooling;

[0023] In the figure: 1-bottom stepped correction mold; 11-lifting hole; 12-limiting post; 2-N-shaped pressing block; 3-casting; 31-mounting edge A; 32-mounting edge B; 4-wedge-shaped spacer block; 5-counterweight block; 51-limiting screw. DETAILED DESCRIPTION

[0024] The technical solutions of the present application are further described below, but the scope of protection is not limited to the description.

[0025] As shown in the drawings. Figures 1 to 5

[0026] A high-temperature alloy casting hot correction tooling of the present application comprises:

[0027] ​The bottom step-shaped correction die 1 is provided with a lifting hole 11 in the outer periphery, four lifting holes 11 are arranged in the outer periphery of the bottom step-shaped correction die 1 in a circumferential array, the lifting hole 11 is used for installing a screw rod to facilitate later lifting, and a plurality of spaced step rings are arranged in the middle of the concave top surface of the bottom step-shaped correction die 1, which are used for cooperating with the spaced grooves in the bottom of the casting 3 for installation.

[0028] The top surface of the bottom step-shaped correction die 1 is welded and fixed with a limiting column 12, the limiting column 12 is circumferentially spaced and arranged in four, the position of the limiting column 12 corresponds to the position of the lifting hole 11, and the limiting column 12 is provided with an upwardly open sliding groove for slidably cooperating with the limiting screw rod 51 of the counterweight block 5.

[0029] Further comprising an N-shaped pressing block 2 clamped between the mounting edge A31 and the mounting edge B32 of the casting 3, the two ends of the N-shaped pressing block 2 are in contact with the mounting edge A31 and the mounting edge B32 during installation to limit and correct the tension.

[0030] Further comprising a counterweight block 5, the limiting screw rod 51 is fixed on the outside of the counterweight block 5 through a threaded pair or welding, and the limiting screw rod 51 is circumferentially spaced and arranged in four on the outer periphery of the counterweight block 5 to correspond to the four limiting columns 12.

[0031] Further comprising a wedge-shaped pad 4 installed at the bottom of the inner diameter surface of the mounting edge B32 for support, the wedge-shaped pad 4 provides a force basis for the correction of the mounting edge B32, and ensures that the casting 3 will not be deformed again due to the use of the correction tool.

[0032] The method for using the casting on the heat correction tool is as follows: the bottom step-shaped correction die 1 is cleaned, the lifting screw rod is inserted into the lifting hole 11; the plurality of wedge-shaped pads 4 are evenly distributed and placed in the grooves at the root of the mounting edge B32 of the casting 3; the casting 3 with the wedge-shaped pad 4 is placed in the bottom step-shaped correction die 1; the plurality of N-shaped pressing blocks 2 are evenly distributed and placed at the mounting edge A31 and the mounting edge B32 of the casting 3, the two ends of the N-shaped pressing block 2 are in contact with the mounting edge A31 and the mounting edge B32 to limit and correct the tension, and the position of the pressing block 2 is above the wedge-shaped pad 4 for position correspondence; the counterweight block 5 is placed on the N-shaped pressing block 2, the limiting screw rod 51 is correspondingly placed in the limiting column 12 sliding groove on the bottom step-shaped correction die 1, the limiting screw rod 51 of the counterweight block 5 is limited by the limiting column 12 sliding groove and will not press the N-shaped pressing block 2 to be excessively pressed into the circular arc gradual change profile of the mounting edge A31 and the mounting edge B32, solving the problem that the pressing plate of the counterweight block is not limited to be pressed down, which can cause damage to the circular arc gradual change profile of the casting; finally, the assembled correction tool and the casting 3 are placed in the heat treatment furnace, the correction temperature and time are set, and the mounting edge heat correction of the casting can be realized.

Claims

1. A hot straightening fixture for high-temperature alloy castings, characterized in that, include: Bottom stepped straightening mold (1), the top surface of the bottom stepped straightening mold (1) is recessed in the middle and has multiple spaced step rings, which are installed in conjunction with the bottom spaced groove of the casting (3). The limiting posts (12) are four circumferentially distributed at intervals, and the limiting posts (12) are fixed on the top surface of the bottom stepped straightening mold (1); It also includes an N-shaped pressure block (2) that is clamped between the mounting edge A (31) and the mounting edge B (32) of the casting (3). When the N-shaped pressure block (2) is installed, its two ends make contact with each other to limit, correct and tighten between the mounting edge A (31) and the mounting edge B (32). It also includes a counterweight (5), and a limit screw (51) is fixed to the outside of the counterweight (5); It also includes a wedge-shaped pad (4) installed at the bottom of the inner diameter surface of the mounting edge B (32) for support; The limiting post (12) has an upward-facing sliding groove for slidingly engaging with the limiting screw (51) of the counterweight (5). The wedge-shaped pad (4) is placed in the groove at the root of the mounting edge B (32) of the casting (3). The casting (3) is placed in the bottom stepped straightening mold (1). The two ends of the N-shaped pressure block (2) engage and contact between the mounting edge A (31) and the mounting edge B (32) for limiting, straightening, and tightening. The position of the pressure block (2) is... Position the wedge-shaped pad (4) directly above it; place the counterweight (5) on the N-shaped pressure block (2), and insert the limiting screw (51) into the groove of the limiting post (12) on the bottom stepped straightening mold (1). The limiting screw (51) of the counterweight (5) is restricted by the groove of the limiting post (12) and will not press the N-shaped pressure block (2) into the arc gradient contour of the mounting edge A (31) and mounting edge B (32) excessively.

2. The high-temperature alloy casting hot straightening fixture as described in claim 1, characterized in that: The bottom stepped straightening mold (1) is provided with a lifting hole (11) for later installation of screws for hoisting.

3. The high-temperature alloy casting hot straightening fixture as described in claim 2, characterized in that: The limiting post (12) corresponds to the lifting hole (11).

4. The high-temperature alloy casting hot straightening fixture as described in claim 2, characterized in that: The lifting holes (11) are four of them arranged in a circular array on the outer periphery of the bottom stepped correction mold (1).

5. The high-temperature alloy casting hot straightening fixture as described in claim 1, characterized in that: There are multiple N-shaped pressure blocks (2).

6. The high-temperature alloy casting hot straightening fixture as described in claim 1, characterized in that: The limiting screws (51) are four arranged in a circular row on the outer periphery of the counterweight (5), and the four limiting screws (51) correspond to the four limiting posts (12).

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