Positioning device for vacuum consumable electric arc melting
By using triangular prism-shaped wedges of the same material in consumable arc melting and adjusting the position of the consumable electrode, the problems of wear and spontaneous combustion of wooden wedges were solved, the uniformity of the gap between the consumable electrode and the crystallizer and the welding safety were achieved, and the quality of melting and ingot casting was improved.
Patent Information
- Application Number
- CN202423069619.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In the prior art, wooden wedges are prone to wear and deformation when adjusting the gap between the consumable electrode and the crystallizer, resulting in uneven gaps, which affects smelting safety and ingot quality. Furthermore, they may spontaneously combust at high temperatures, causing an increase in gas pressure and affecting welding safety.
Multiple triangular prism-shaped wedges, made of the same material as the consumable arc melting alloy, are evenly placed between the consumable electrode and the crystallizer. By adjusting the position of the consumable electrode, the wedges are kept at the same horizontal height to ensure uniform gap. Welding and scale lines are used to improve positioning accuracy and avoid foreign object contamination and high-temperature spontaneous combustion.
It achieves uniformity in the gap between the consumable electrode and the crystallizer, avoids foreign matter contamination and high-temperature spontaneous combustion, improves smelting safety and ingot quality, and ensures welding safety.
Smart Images
Figure CN223509927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smelting technology, and in particular to a positioning device for vacuum consumable arc smelting. Background Technology
[0002] In the vacuum arc remelting (VAR) process of titanium alloys, a set gap needs to be maintained between the consumable electrode 8 and the crystallizer 9. The adjustment and maintenance of this gap is of great significance to the VAR remelting of titanium alloys. Specifically, maintaining an appropriate gap between the consumable electrode 8 and the crystallizer 9 helps to ensure stable arc combustion, thereby ensuring the smooth progress of the melting process; the size of the gap can affect the melting rate of the consumable electrode 8; an appropriate gap helps to control the melting speed of the electrode, thereby controlling the solidification process of the ingot; maintaining the gap between the consumable electrode 8 and the crystallizer 9 helps to ensure uniform cooling of the ingot. By adjusting the gap, it can be ensured that the ingot cools evenly around its perimeter, avoiding internal stress and cracks caused by uneven cooling; uniform cooling and an appropriate gap help to improve the quality of the ingot, reduce defects, and improve the mechanical and physical properties of the product.
[0003] As attached Figure 1 As shown, in the prior art, the gap between the consumable electrode 8 and the crystallizer 9 is manually adjusted by using a wooden wedge 10 and a crowbar. Since the wooden wedge 10 is prone to wear and deformation, the wood chips that fall off during wear will fall into the crystallizer 9, causing contamination to the smelting process. The deformed wooden wedge 10 will cause uneven gap between the consumable electrode 8 and the crystallizer 9, affecting smelting safety and ingot quality. In addition, during the welding process between the consumable electrode 8 and the auxiliary electrode, the wooden wedge is prone to spontaneous combustion at high temperatures, which will cause the gas pressure inside the crystallizer 9 to rise, affecting welding safety.
[0004] In view of this, there is an urgent need for a positioning device for vacuum consumable arc melting that can solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a positioning device for vacuum consumable arc melting that solves the above-mentioned problems.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a positioning device for vacuum consumable arc melting, comprising:
[0007] A positioning device for vacuum consumable arc melting includes multiple wedges, which are evenly placed between the top edge of the consumable electrode and the crystallizer cylinder. Each wedge has a triangular prism structure and includes a base plate, a first side plate, and a second side plate. The angle between the base plate and the first side plate is α, and the angle between the base plate and the second side plate is β. The base plate, the first side plate, and the second side plate are made of the same material as the alloy material used for vacuum consumable arc melting. One end of the wedge at angle β is inserted into the gap between the consumable electrode and the crystallizer cylinder.
[0008] Preferably, the length L1 of the wedge is 200-300mm, the width L2 is 80-150mm, and the thickness L3 is 80-150mm.
[0009] Preferably, the angle α between the base plate and the first side plate is in the range of 90°-150°, and the angle b between the base plate and the second side plate is in the range of 15°-45°.
[0010] Preferably, the base plate, the first side plate, and the second side plate are integrally formed.
[0011] Preferably, the base plate, the first side plate, and the second side plate are all titanium alloy plates from waste materials, and the base plate, the first side plate, and the second side plate are connected by welding.
[0012] Preferably, the wedge further includes two ribs, which are symmetrically arranged on both sides of the base plate; the ribs are triangular, and the three sides of the ribs are respectively connected to the base plate, the first side plate and the second side plate.
[0013] Preferably, the rib is provided with scale lines with marking function in the vertical direction.
[0014] Preferably, the scale lines are formed by laser etching, chemical etching, or mechanical engraving.
[0015] Preferably, the corners of the wedge are chamfered.
[0016] Preferably, the base plate, the first side plate, and the second side plate are all provided with weight reduction holes.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] The positioning device for vacuum consumable arc melting provided by this utility model places multiple wedges evenly between the top edge of the consumable electrode and the crystallizer cylinder. One end of each wedge, with its included angle b, is inserted into the gap between the consumable electrode and the crystallizer cylinder. By adjusting the position of the consumable electrode, the multiple wedges are made to be at the same horizontal height, achieving a uniform gap between the consumable electrode and the crystallizer. The consumable electrode is located at the center of the crystallizer. Since the bottom plate, the first side plate, and the second side plate are made of the same alloy material as the material used for vacuum consumable arc melting, foreign objects are prevented from being introduced into the crystallizer during the furnace loading process, thus avoiding contamination of the melting process. Because the material is an alloy, the positioning device can prevent deformation that could lead to uneven gaps between the consumable electrode and the crystallizer, affecting melting safety and ingot quality. It also prevents the positioning device from spontaneously combusting at high temperatures during the welding process between the consumable electrode and the auxiliary electrode, which could cause an increase in gas pressure inside the crystallizer and affect welding safety. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the positional structure of the wedge in the background art;
[0020] Figure 2 This is a schematic diagram of a positioning device for vacuum consumable arc melting.
[0021] Figure 3 This is a schematic diagram of the wedge structure in an embodiment of the present invention;
[0022] Figure 4 This is a schematic diagram of the wedge structure in Embodiment 2 of this utility model;
[0023] Figure 5 This is a schematic diagram of the wedge structure in Embodiment 3 of this utility model.
[0024] In the diagram: 1. Wedge; 2. Base plate; 3. First side plate; 4. Second side plate; 5. Rib plate; 6. Scale line; 7. Weight reduction hole; 8. Consumable electrode; 9. Crystallizer; 10. Wooden wedge. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Example 1
[0027] Please see the appendix Figure 2-3 A positioning device for vacuum consumable arc melting, comprising:
[0028] Multiple wedges 1, each wedge having a triangular prism structure. Each wedge 1 includes a base plate 2, a first side plate 3, and a second side plate 4. The angle between the base plate 2 and the first side plate 3 is α, and the angle between the base plate 2 and the second side plate 4 is β. The base plate 2, the first side plate 3, and the second side plate 4 are made of the same alloy material as those used in vacuum arc melting.
[0029] The positioning device for vacuum self-consuming arc melting provided by this utility model places multiple wedges 1 evenly between the top edge of the self-consuming electrode 8 and the crystallizer 9 cylinder. One end of each wedge 1 at the included angle b is inserted into the gap between the self-consuming electrode 8 and the crystallizer 9 cylinder. By adjusting the position of the self-consuming electrode 8, the multiple wedges 1 are made to be at the same horizontal height, so that the gap between the self-consuming electrode 8 and the crystallizer 9 is uniform. The self-consuming electrode 8 is located at the center of the crystallizer 9. Since the bottom plate 2, the first side plate 3 and the second side plate 4 are made of the same alloy material as the material used for vacuum self-consuming arc melting, foreign objects are prevented from being brought into the crystallizer 9 during the furnace loading process, which would cause contamination to the melting process. Because the material is an alloy, the structural strength is improved. The positioning device can prevent deformation that would cause uneven gap between the self-consuming electrode 8 and the crystallizer 9, affecting melting safety and ingot quality. It also prevents the positioning device from spontaneously combusting at high temperature during the welding process between the self-consuming electrode 8 and the auxiliary electrode, which would cause the gas pressure inside the crystallizer 9 to rise and affect welding safety.
[0030] Specifically, the length L1 of the wedge 1 is 200-300mm, the width L2 is 80-150mm, and the thickness L3 is 80-150mm.
[0031] Specifically, the included angle α between the base plate 2 and the first side plate 3 is in the range of 90°-150°, and the included angle b between the base plate 2 and the second side plate 4 is in the range of 15°-45°.
[0032] Specifically, the base plate 2, the first side plate 3, and the second side plate 4 are integrally formed;
[0033] Considering that there are many specifications for crystallizer 9 and consumable electrode 8, and the dimensions of different specifications are also different, in order to ensure that wedge 1 can be used effectively, wedge 1 also has a variety of dimensions and included angles a and b, so that the staff can select the appropriate wedge 1 according to the specifications of crystallizer 9 and consumable electrode 8. At the same time, the raw material of wedge 1 is mainly taken from titanium alloy blocks in the waste materials. According to the dimensions of the titanium alloy blocks themselves, they are appropriately processed to make them into wedge 1 that meet the above requirements.
[0034] Example 2
[0035] The base plate 2, the first side plate 3, and the second side plate 4 are connected by welding.
[0036] In this application, since the material of the wedge 1 is mainly taken from the titanium alloy in the scrap, there are relatively few titanium alloy blocks that meet the requirements of Embodiment 1. The remaining scrap is mostly titanium alloy thin plates of different sizes. Considering that the titanium alloy thin plates themselves have high hardness and are not easy to deform, after the titanium alloy thin plates are processed in terms of size, the titanium alloy thin plates of different sizes are welded to form the wedge 1 that meets the requirements. This method effectively utilizes the titanium alloy plates in the scrap and makes full use of the characteristics of easy availability and easy manufacturing of this type of titanium alloy plate material. It should be noted that in order to avoid the pure titanium or titanium alloy thin plate supporting the wedge 1 from bringing foreign objects into the crystallizer 9 during the furnace loading process, affecting the quality of the titanium alloy ingot, and improving the welding safety and service life of the wedge 1, it is preferred to support the wedge 1 with a titanium plate with a thickness of 5mm by argon arc welding.
[0037] The welding current range is 100A-250A, the welding voltage range is 12V-18V, and the welding speed range is 8mm / s-15mm / s, ensuring welding strength and the overall structural performance of the shoe.
[0038] Specifically, the wedge 1 also includes two ribs 5, which are symmetrically arranged on both sides of the base plate 2. The ribs 5 are triangular, and the three sides of the ribs 5 are connected to the base plate 2, the first side plate 3, and the second side plate 4, respectively. Considering that the wedge 1 cannot form a closed structure by relying solely on the base plate 22, the first side plate 33, and the second side plate 44, ribs 55 are welded on both sides to make the wedge 1 have a closed structure as a whole.
[0039] Specifically, the rib plate 5 is provided with a scale line 6 with marking function in the vertical direction; the scale line 6 is used to observe the insertion depth of the wedge 1. When the scale line 6 on the base plate 2 of multiple wedges 1 is at the same vertical distance from the top edge of the self-consuming electrode 8, it means that multiple wedges 1 are at the same horizontal height, thereby achieving the purpose of improving positioning accuracy.
[0040] Specifically, the corners of the wedge 1 are chamfered; in order to avoid scratching the operator during use, and to reduce the scratches on the surface of the consumable electrode 8 and the crystallizer 9 during insertion and adjustment, the corners of the wedge 1 are chamfered with a chamfer radius ranging from 0.5mm to 3mm.
[0041] Specifically, the base plate 2, the first side plate 3 and the second side plate 4 are all provided with weight reduction holes 7; in order to reduce the weight of the wedge 1, multiple weight reduction holes 7 are provided on it.
[0042] Example 3
[0043] Please see the appendix Figure 5
[0044] In this application, the second side plate 4 is provided with a plurality of fixing grooves along a predetermined distance on the side facing the consumable electrode 8. The fixing grooves are used for the top edge of the consumable electrode 8 to abut against, so as to improve the stability of the shoe placed between the consumable electrode 8 and the crystallizer 9 cylinder.
[0045] This application provides the working principle of a positioning device for vacuum consumable arc melting:
[0046] S1: Hoist the consumable electrode 8 onto the bottom pad of the crystallizer 9, and then use the traveling slurry to cover the outside of the consumable electrode 8 with the crystallizer 9 cylinder. The crystallizer 9 and the bottom pad are then tightened and fixed with bolts.
[0047] S2: Place multiple wedges 1 evenly between the top edge of the consumable electrode 8 and the crystallizer 9 cylinder. The wedges 1 are symmetrically arranged, with one end of the included angle b facing down and inserted into the gap between the consumable electrode 8 and the crystallizer 9 cylinder. The first side plate 3 is higher than the top edge of the consumable electrode 8, and the bottom plate 2 is in contact with the side of the consumable electrode 8. The larger the gap between the consumable electrode 8 and the crystallizer 9 cylinder, the lower the horizontal height of the first side plate 3. The minimum height is flush with the top edge of the consumable electrode 8. For example, place one wedge 1 every 90° along the inner circle of the crucible. By adjusting the position of the consumable electrode 8, the four wedges 1 are made to be at the same horizontal height, so that the gap between the consumable electrode 8 and the crystallizer 9 is uniform. The consumable electrode 8 is located at the center of the bottom pad of the crystallizer 9. An example is shown below:
[0048] When the crucible diameter is 580mm and the consumable electrode 8 diameter is 480mm, the wedge 1 makes the gap between the consumable electrode 8 and the crystallizer 9 at all points 50mm.
[0049] When the crucible diameter is 650mm and the consumable electrode 8 diameter is 570mm, the wedge 1 makes the gap between the consumable electrode 8 and the crystallizer 9 at all points 40mm.
[0050] When the crucible diameter is 720mm and the consumable electrode 8 diameter is 640mm, the wedge 1 ensures that the gap between the consumable electrode 8 and the crystallizer 9 is 40mm at all points.
[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A positioning device for vacuum consumable arc melting, characterized in that, It includes multiple wedges (1), which are evenly placed between the top edge of the consumable electrode (8) and the crystallizer (9) cylinder. The wedges (1) are triangular prisms and include a base plate (2), a first side plate (3), and a second side plate (4). The angle between the base plate (2) and the first side plate (3) is α, and the angle between the base plate (2) and the second side plate (4) is β. One end of the wedge (1) with angle β is inserted into the gap between the consumable electrode (8) and the crystallizer (9) cylinder.
2. The positioning device for vacuum consumable arc melting according to claim 1, characterized in that, The length L1 of the wedge (1) is 200-300mm, the width L2 is 80-150mm, and the thickness L3 is 80-150mm.
3. The positioning device for vacuum consumable arc melting according to claim 1, characterized in that, The angle a between the base plate (2) and the first side plate (3) is in the range of 90°-150°, and the angle b between the base plate (2) and the second side plate (4) is in the range of 15°-45°.
4. The positioning device for vacuum consumable arc melting according to claim 1, characterized in that, The base plate (2), the first side plate (3) and the second side plate (4) are integrally formed.
5. The positioning device for vacuum consumable arc melting according to claim 1, characterized in that, The base plate (2), the first side plate (3) and the second side plate (4) are connected by welding.
6. The positioning device for vacuum consumable arc melting according to claim 5, characterized in that, The wedge (1) also includes two ribs (5), which are symmetrically arranged on both sides of the base plate (2); the ribs (5) are triangular, and the three sides of the ribs (5) are connected to the base plate (2), the first side plate (3) and the second side plate (4) respectively.
7. The positioning device for vacuum consumable arc melting according to claim 6, characterized in that, The rib (5) is provided with scale lines (6) with marking function in the vertical direction.
8. The positioning device for vacuum consumable arc melting according to any one of claims 1-7, characterized in that, The corners of the wedge (1) are chamfered.
9. The positioning device for vacuum consumable arc melting according to any one of claims 1 to 7, characterized in that, The base plate (2), the first side plate (3) and the second side plate (4) are all provided with weight reduction holes (7).