A turbine wax pattern module weld strength measuring device

Abstract

A device for measuring the welding strength of a turbine wax mold assembly includes a tensile testing machine and a testing fixture. The tensile testing machine includes a tensile clamp for fixing the turbine wax mold of the turbine wax mold assembly. The testing fixture includes a guide sleeve, a base, a rotating disk, and a wedge block. The base is fixed to the tensile testing machine, the rotating disk is rotatably connected to the base, and the guide sleeve is fixedly connected to the rotating disk. A second locking screw is provided on the guide sleeve, and a refractory fiber pre-made crucible is placed inside the guide sleeve and fixed by the second locking screw. A gap exists between the bottom of the rotating disk and the base, and the wedge block is placed in this gap. A third locking screw is provided on the base, which abuts against the wedge block to fix the rotating disk. This application uses the testing fixture to fix the turbine wax mold assembly onto the tensile testing machine, and uses the tensile testing machine to perform tensile strength testing, facilitating rapid measurement of welding strength.

Description

Technical Field

[0001] This application relates to the technical field, and in particular to a device for measuring the welding strength of a turbine wax mold module. Background Technology

[0002] In the investment casting process, the wax pattern process includes a wax pattern assembly process, which involves welding the product wax pattern to the gate wax pattern to form a wax pattern assembly. Specifically, an electric hot knife is used to melt the inner gate surface of the product wax pattern and the gate surface of the assembly, bonding the inner gate surface and the gate surface of the product wax pattern together to form a complete wax pattern assembly, which is used for shell making and melting in subsequent processes.

[0003] The main problem is that the bonding strength between the gate surface and the gate surface inside the product wax mold cannot be determined. During the manufacturing process, due to factors such as module vibration and the weight of the product wax mold itself, the product wax mold may break at the bonding point.

[0004] To address this, we propose a device for measuring the welding strength of turbine wax mold modules. Utility Model Content

[0005] In response to the shortcomings of the existing production technology, the applicant provides a turbine wax mold assembly welding strength measuring device, which fixes the turbine wax mold assembly onto a tensile machine using a testing fixture, and uses the tensile machine to perform tensile strength testing, thus facilitating rapid welding strength measurement.

[0006] The technical solution adopted in this application is as follows: A device for measuring the welding strength of a turbine wax mold assembly includes: A stretching machine, including a stretching clamp, is used to fix the turbine wax mold of a turbine wax mold assembly; The test fixture includes a guide sleeve, a base, a rotating disk, and a wedge block; The base is fixed on the stretching machine, the rotating disk is rotatably connected to the base, the guide sleeve is fixedly connected to the rotating disk, the guide sleeve is provided with a second locking screw, the refractory fiber precast crucible of the turbine wax mold module is placed inside the guide sleeve, and the refractory fiber precast crucible is fixed by the second locking screw. The turbine wax mold assembly includes a refractory fiber precast crucible, a gating wax mold, and a turbine wax mold; the refractory fiber precast crucible is welded and fixed to the gating wax mold, and the gating wax mold is welded and fixed to the turbine wax mold. There is a gap between the bottom of the rotating disk and the base. The wedge block is placed in the gap. A third locking screw is provided on the base. The rotating disk is fixed by the third locking screw against the wedge block.

[0007] Its further features are: The tensile force of the stretching machine is less than 100 kg.

[0008] The guide sleeve is provided with a guide rod, and a movable tray is fitted on the guide rod to support the refractory fiber precast crucible.

[0009] The axis of the guide rod is parallel to the axis of the guide sleeve.

[0010] The tray is provided with a guide ring, which is movably sleeved on the guide rod. The guide ring is also provided with a first locking screw, which fixes the guide ring in place.

[0011] The stretching clamp includes a clamp body, which has a trapezoidal groove with an opening at the bottom. Two lifting locking blocks are provided in the trapezoidal groove, and the two locking blocks have clamping grooves facing each other.

[0012] The trapezoidal groove gradually narrows from top to bottom.

[0013] The fixture body also includes a bolt, one end of which is fixedly connected to the tensioning machine. The fixture body is provided with a threaded hole that matches the bolt, and the bolt is matched and set in the threaded hole. Both locking blocks are provided with grooves, and one end of the bolt is provided with a limit block inside the fixture body, with the limit block located in the two grooves.

[0014] The bolt is fitted with a locking nut between the fixture body and the stretching machine.

[0015] The clamping groove is V-shaped.

[0016] The beneficial effects of this application are as follows: This application features a compact and reasonable structure, and is easy to operate. During use, the refractory fiber precast crucible is placed inside the guide sleeve. The third locking screw is loosened, and the rotating disk is rotated to a suitable position. The rotating disk drives the guide sleeve and the refractory fiber precast crucible to rotate to a suitable position, making the turbine wax mold's clamping head vertical. Simultaneously, the position of the refractory fiber precast crucible in the guide sleeve is adjusted so that the turbine wax mold's clamping head is in the clamping groove. The clamping head of the turbine wax mold is clamped by the tension clamp. The third locking screw is tightened, pressing the wedge block, which in turn presses the rotating disk, restricting its rotation. The second locking screw is then tightened to fix the refractory fiber precast crucible, and the position of the tray is adjusted so that the tray supports the refractory fiber precast crucible. Finally, the tray is fixed with the first locking screw. The turbine wax mold assembly is brought to a completely fixed state. The stretching machine is then started, and it begins to stretch the gate wax mold and the turbine wax mold until the welded ends of the gate wax mold and the turbine wax mold break. The tensile force value is obtained, and the tensile strength test of the gate wax mold and the turbine wax mold is completed.

[0017] In addition, this application also has the following advantages: (1) When the rotating disk needs to rotate, loosen the third locking screw. The third locking screw will no longer press against the wedge block, and the wedge block will no longer restrict the rotation of the rotating disk. Rotate the rotating disk. After the rotating disk rotates to the appropriate position, tighten the third locking screw. The third locking screw will press against the wedge block, causing the wedge block to press against the rotating disk. The wedge block will restrict the rotating disk, preventing it from rotating. The rotating disk is fixed by the cooperation of the third locking screw and the wedge block.

[0018] (2) After the clamping head of the turbine wax mold is in the clamping groove, rotate the main body of the fixture. The main body of the fixture rotates along the bolt, and then drives the locking block to move downward relative to the main body of the fixture through the limiting block, so that the clamping groove of the locking block fixes the clamping head of the turbine wax mold. Then tighten the locking nut, and the locking nut contacts the main body of the fixture, fixing the main body of the fixture. This fixes the clamping head of the turbine wax mold. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the fixed turbine wax mold module of this application.

[0020] Figure 2 This is a schematic diagram of the structure in front of the fixed turbine wax mold module of this application.

[0021] Figure 3 This is a schematic diagram of the test fixture for this application.

[0022] Figure 4 This is a schematic diagram of the base and rotating disk of this application.

[0023] Figure 5 This is a schematic diagram of the tension clamp of this application.

[0024] Figure 6 This is a bottom view of the tension clamp of this application.

[0025] The components include: 1. Tensile testing machine; 2. Testing fixtures; 3. Refractory fiber precast crucible; 4. Sprue wax mold; 5. Turbine wax mold; 101. Tension clamp; 1011. Fixture body; 1012. Trapezoidal groove; 1013. Locking block; 1014. Groove; 1015. Clamping groove; 1016. Limiting block; 1017. Bolt; 1018. Locking nut; 201. Guide sleeve; 202. Guide rod; 203. Tray; 204. First locking screw; 205. Base; 206. Rotating disk; 207. Second locking screw; 208. Wedge block; 209. Third locking screw. Detailed Implementation

[0026] The specific embodiments of this application are described below with reference to the accompanying drawings.

[0027] like Figure 1-6 As shown, a turbine wax mold assembly welding strength measuring device includes a tensile machine 1 and a testing fixture 2, used to measure the welding strength of the gate wax mold 4 and the turbine wax mold 5.

[0028] The wax model assembly includes a refractory fiber precast crucible 3, a gating wax model 4, and a turbine wax model 5. The refractory fiber precast crucible 3 and the gating wax model 4 are fixed together by welding, and the gating wax model 4 and the turbine wax model 5 are fixed together by welding. The welding area between the refractory fiber precast crucible 3 and the gating wax model 4 is much larger than the welding area between the gating wax model 4 and the turbine wax model 5, which makes the welding strength between the refractory fiber precast crucible 3 and the gating wax model 4 much greater than the welding strength between the gating wax model 4 and the turbine wax model 5.

[0029] Based on experience, the welding strength between the gate wax mold 4 and the turbine wax mold 5 ranges from a few kilograms to tens of kilograms. Therefore, a low-force stretching machine 1 is selected, with a stretching force of less than 100 kilograms. The turbine wax mold assembly is a non-standard structure.

[0030] Test fixture 2 is fixed on tensile machine 1.

[0031] The testing fixture 2 includes a base 205 and a guide sleeve 201. The base 205 is fixed on the tensile testing machine 1. A rotating disk 206 is rotatably mounted on the base 205, meaning the base 205 and the rotating disk 206 are rotatably connected, and the rotating disk 206 can rotate relative to the base 205. The guide sleeve 201 is fixedly connected to the rotating disk 206, and the rotation of the rotating disk 206 drives the rotation of the guide sleeve 201.

[0032] A guide rod 202 is provided on the guide sleeve 201, and a movable tray 203 is sleeved on the guide rod 202.

[0033] In one embodiment, the axis of the guide rod 202 is parallel to the axis of the guide sleeve 201.

[0034] In one embodiment, a guide ring is provided on the tray 203, which is movably sleeved on the guide rod 202. A first locking screw 204 is also provided on the guide ring, and the guide ring is fixed by the first locking screw 204, thereby fixing the tray 203.

[0035] When it is necessary to move the tray 203, loosen the first locking screw 204, move the tray 203, and the guide ring of the tray 203 moves along the guide rod 202. After the tray 203 moves to the appropriate position, tighten the second locking screw 207 to fix the guide ring, thereby fixing the tray 203.

[0036] In one embodiment, a second locking screw 207 is provided on the guide sleeve 201 to fix the refractory fiber precast crucible 3.

[0037] The base 205 is provided with a third locking screw 209, and the test fixture 2 also includes a wedge block 208. There is a gap between the bottom of the rotating disk 206 and the base 205, and the wedge block 208 is placed in the gap.

[0038] When the rotating disk 206 needs to rotate, loosen the third locking screw 209. The third locking screw 209 no longer presses against the wedge block 208, and the wedge block 208 no longer restricts the rotation of the rotating disk 206. Rotate the rotating disk 206. After the rotating disk 206 rotates to the appropriate position, tighten the third locking screw 209. The third locking screw 209 presses against the wedge block 208, causing the wedge block 208 to press against the rotating disk 206, thus restricting the rotation of the rotating disk 206. The rotating disk 206 is fixed by the cooperation of the third locking screw 209 and the wedge block 208.

[0039] The tensioning machine 1 is equipped with a tensioning clamp 101, which includes a bolt 1017, a clamp body 1011, a locking block 1013, and a limiting block 1016. The fixture body 1011 is provided with a threaded hole that matches the bolt 1017, and the bolt 1017 is fitted into the threaded hole.

[0040] In one embodiment, one end of bolt 1017 is fixedly connected to tensioning machine 1.

[0041] The fixture body 1011 has a trapezoidal groove 1012 with an open bottom. Two locking blocks 1013 are installed within the trapezoidal groove 1012. Each locking block 1013 has a clamping groove 1015 and a recess 1014. One end of a bolt 1017 is connected to a limiting block 1016 installed within the fixture body 1011. The limiting block 1016 is positioned within the two recesses 1014. The limiting block 1016 drives the locking blocks 1013 to move up and down, thereby causing the clamping grooves 1015 of the locking blocks 1013 to clamp and fix the clamping head of the turbine wax mold 5. The trapezoidal groove 1012 gradually narrows from top to bottom.

[0042] In one embodiment, a locking nut 1018 is provided between the bolt 1017 and the clamp body 1011 and the tensioning machine 1.

[0043] After the clamping head of the turbine wax model 5 is positioned in the clamping groove 1015, the clamp body 1011 is rotated. The clamp body 1011 rotates along the bolt 1017, which in turn drives the locking block 1013 to move downward relative to the clamp body 1011 through the limiting block 1016. This causes the clamping groove 1015 of the locking block 1013 to fix the clamping head of the turbine wax model 5. Then, the locking nut 1018 is tightened, and the locking nut 1018 contacts the clamp body 1011, fixing the clamp body 1011 in place. This secures the clamping head of the turbine wax model 5.

[0044] In one embodiment, the clamping groove 1015 is V-shaped or arc-shaped.

[0045] In use, place the refractory fiber precast crucible 3 into the guide sleeve 201, loosen the third locking screw 209, and rotate the rotating disk 206 to a suitable position. The rotating disk 206 drives the guide sleeve 201 and the refractory fiber precast crucible 3 to rotate to a suitable position so that the clamping head of the turbine wax mold 5 is vertical. At the same time, adjust the position of the refractory fiber precast crucible 3 in the guide sleeve 201 so that the clamping head of the turbine wax mold 5 is in the clamping groove 1015, and clamp it by the tension clamp 101. Tighten the clamping head of the turbine wax mold 5 with the third locking screw 209. The third locking screw 209 presses against the wedge block 208, causing the wedge block 208 to press against the rotating disk 206. The wedge block 208 restricts the rotating disk 206, preventing it from rotating. Tighten the second locking screw 207 to fix the refractory fiber precast crucible 3, and adjust the position of the tray 203 so that the tray 203 supports the refractory fiber precast crucible 3. Then, fix the tray 203 with the first locking screw 204. This ensures that the turbine wax mold assembly is in a completely fixed state. Start the stretching machine 1, which begins to stretch the gate wax mold 4 and the turbine wax mold 5 until the welded ends of the gate wax mold 4 and the turbine wax mold 5 break, obtaining the tensile force value and completing the tensile strength test of the gate wax mold 4 and the turbine wax mold 5.

[0046] The above description is an explanation of this application and not a limitation thereof. The scope of this application is defined by the claims. Any modifications may be made within the scope of protection of this application.

Claims

1. A device for measuring the welding strength of a turbine wax mold assembly, characterized in that, include: The stretching machine (1) includes a stretching clamp (101) for fixing the turbine wax mold (5) of the turbine wax mold assembly; The test fixture (2) includes a guide sleeve (201), a base (205), a rotating disk (206), and a wedge block (208). Among them, the base (205) is fixed on the stretching machine (1), the rotating disk (206) is rotatably connected to the base (205), the guide sleeve (201) is fixedly connected to the rotating disk (206), the guide sleeve (201) is provided with a second locking screw (207), the refractory fiber precast crucible (3) of the turbine wax mold module is placed in the guide sleeve (201), and the refractory fiber precast crucible (3) is fixed by the second locking screw (207); The turbine wax mold assembly includes a refractory fiber precast crucible (3), a gating wax mold (4), and a turbine wax mold (5); the refractory fiber precast crucible (3) is welded and fixed to the gating wax mold (4), and the gating wax mold (4) is welded and fixed to the turbine wax mold (5); There is a gap between the bottom of the rotating disk (206) and the base (205), and the wedge block (208) is placed in the gap. The base (205) is provided with a third locking screw (209), which abuts against the wedge block (208) to fix the rotating disk (206).

2. The turbine wax mold module welding strength measuring device as described in claim 1, characterized in that: The tensile force of the stretching machine (1) is less than 100 kg.

3. The turbine wax mold module welding strength measuring device as described in claim 1, characterized in that: The guide sleeve (201) is provided with a guide rod (202), and a movable tray (203) is sleeved on the guide rod (202) to support the refractory fiber precast crucible (3).

4. The turbine wax mold module welding strength measuring device as described in claim 3, characterized in that: The axis of the guide rod (202) is parallel to the axis of the guide sleeve (201).

5. The turbine wax mold module welding strength measuring device as described in claim 3, characterized in that: The tray (203) is provided with a guide ring, which is movably sleeved on the guide rod (202). The guide ring is also provided with a first locking screw (204), which fixes the guide ring.

6. The turbine wax mold module welding strength measuring device as described in claim 1, characterized in that: The stretching clamp (101) includes a clamp body (1011), the clamp body (1011) is provided with a trapezoidal groove (1012) with a bottom opening, and two locking clamps (1013) are provided in the trapezoidal groove (1012), and the two locking clamps (1013) are provided with clamping grooves (1015) facing each other.

7. The turbine wax mold module welding strength measuring device as described in claim 6, characterized in that: The trapezoidal groove (1012) gradually narrows from top to bottom.

8. The turbine wax mold module welding strength measuring device as described in claim 6, characterized in that: The fixture body (1011) also includes a bolt (1017), one end of which is fixedly connected to the tensioning machine (1). The fixture body (1011) is provided with a threaded hole that matches the bolt (1017). The bolt (1017) is matched and set in the threaded hole. Both locking blocks (1013) are provided with grooves (1014). One end of the bolt (1017) is provided with a limit block (1016) in the fixture body (1011). The limit block (1016) is located in the two grooves (1014).

9. The turbine wax mold module welding strength measuring device as described in claim 8, characterized in that: The bolt (1017) is fitted with a locking nut (1018) between the fixture body (1011) and the tensioning machine (1).

10. The turbine wax mold module welding strength measuring device as described in claim 6, characterized in that: The clamping groove (1015) is V-shaped.

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