CN104858513B - An electrolytic nesting cathode manufacturing device based on a bidirectional array flow tube - Google Patents

Abstract

An electrolytic casing cathode manufacturing device based on a bidirectional array flow tube, which includes a cathode base, a cathode main body, an upper cover, an O-shaped sealing ring and a high-pressure pipe joint; the O-shaped sealing ring is embedded in a groove on the upper part of the cathode base, The upper cover and the cathode base are connected together by bolts; one end of the high-pressure pipe joint is connected to the upper cover through threads, and the other end is connected to the high-pressure pipe; the center of the cathode base is slotted to form a liquid storage chamber with the upper cover. The main body of the cathode is covered with positive array flow tubes, some of the array flow tubes are cut off at the middle and upper part, and the upper part of the cut-off part is blocked with a low melting point alloy or acid and alkali resistant glue, and the lower part of the cut-off part is unblocked to form a reverse array flow Tubes, forward and reverse array flow tubes can quickly update the electrolyte. The invention has good practical value and application prospect in the technical field of electrolytic processing.

Description

An electrolytic nesting cathode manufacturing device based on a bidirectional array flow tube

technical field

The present invention relates to an electrolytic nesting cathode production device based on bidirectional array flow tubes, which is based on the principle of electrochemistry and utilizes tool electrodes with bidirectional flow tubes to directly pass the electrolyte to the processing area and discharge the electrolyte in time, thereby A device for realizing electrolytic nesting processing with high efficiency and high precision belongs to the technical field of electrolytic processing. The device can greatly shorten the initial processing and semi-finishing time of various difficult-to-machine materials (titanium alloys, high-temperature alloys, etc.), significantly reduce processing costs, and significantly improve processing efficiency, and has wide applicability.

Background technique

The processing and manufacturing level of difficult-to-machine materials (titanium alloys, high-temperature alloys, etc.) restricts the development of my country's industry to a certain extent, especially in aerospace vehicles, a large number of complex structural parts made of difficult-to-machine materials have brought huge difficulties to processing . Traditional processing methods mostly use milling and grinding, and electrolytic nesting processing technology has certain applications. However, most of the existing electrolytic nesting processing methods have unstable flow fields, especially when the kerf is deep, and the electrolyte in the processing area is updated. Difficulties, electrolytic products and heat accumulation cause unstable processing and even short circuits. The efficiency and precision of electrolytic machining need to be further improved.

The cathode of the electrolytic nesting tool based on the two-way flow tube array proposed by the present invention can direct the electrolyte to the gap in the processing area through the array flow tubes, and at the same time take away the electrolysis products and heat in time through the reverse array flow tubes, which significantly improves the flow rate. Field stability improves machining accuracy and efficiency while reducing machining costs.

Contents of the invention

1. Purpose: The purpose of the present invention is to provide an electrolytic sleeve cathode manufacturing device based on bidirectional array flow tubes. The tool cathode has array flow tubes and reverse array flow tubes at the same time, so that the electrolyte can be fully delivered to the processing gap. And it can be discharged in time to take away the processed products and heat, which can greatly reduce the processing cost of difficult-to-machine materials (titanium alloys, high-temperature alloys, etc.), and improve its processing accuracy and efficiency.

2, technical scheme: in order to achieve the above object, the present invention adopts following technical scheme:

The invention relates to an electrolysis casing cathode production device based on bidirectional array flow tubes, which includes a cathode substrate, a cathode main body, an upper cover, an O-shaped sealing ring and a high-pressure pipe joint. The positional connection relationship between them is: the O-shaped sealing ring is embedded in the groove on the upper part of the cathode base, and the upper cover and the cathode base are connected together by bolts; one end of the high-pressure pipe joint is connected to the upper cover through threads, and the other end is connected to the High-pressure tube; the center of the cathode base is slotted and the upper cover forms a liquid storage chamber. The main body of the cathode is covered with forward array flow tubes, some of the array flow tubes are cut off at the middle and upper part, the upper part of the cut-off part is blocked by a filler (low melting point alloy or acid and alkali resistant glue), and the lower part of the cut-off part is unblocked to form a reverse array flow tube. The reverse array flow tube achieves the effect of rapidly updating the electrolyte.

Among them, the cathode body has both forward array flow tubes and reverse array flow tubes, which can make the electrolyte reach the electrolytic processing gap without hindrance; the return line, namely the reverse array flow tube, is added to smooth the entire liquid inlet and discharge The system can make the electrolyte discharge out of the processing gap in time, and take away the heat and processing products.

Among them, EDM cutting combined with brazing welding is used to construct the electrolytic casing electrode, and the structure of the forward array flow tube and the reverse array flow tube needs to first arrange the fine copper tubes closely according to the shape to be processed, and then use brazing technology Weld the copper tubes into shape. In order to construct the reverse array flow tubes, the upper part of the forward array flow tubes can be blocked with filler, and the middle and upper part of the flow tubes can be cut off, and the lower part of the cut forward flow tubes becomes the reverse array flow tubes. The lower end of the flow tube of the reverse array flow tube is the inlet of the reverse flow channel, and the upper part of the flow tube is the outlet of the reverse flow channel. The structure of forward and reverse flow tubes can take away heat and electrolytic products in time, so that electrolytic processing can be carried out stably.

Among them, in order to pass the electrolyte into the cathode main body, the cathode main body needs to be embedded in the narrow slit cut by the wire of the cathode base body, which is also firmly connected by brazing method here. The liquid storage chamber processed on the upper part of the cathode base is used to store the electrolyte that is about to enter the processing area. The upper part of the liquid storage chamber is threaded to connect the upper cover, and the connection is sealed with an O-ring. The upper cover is threaded to connect with the high-pressure pipe joint. The flow rate electrolyte is passed into the electrode base and the array flow tube through this pipe joint.

3. Compared with the prior art, the present invention has the following advantages:

1) The nesting electrode used in the present invention has an array of flow tubes, which can fully deliver the fresh electrolyte to the electrolytic processing area without hindrance. Compared with the traditional liquid supply method, the pressure distribution in the processing area is uneven in this way, resulting in electrolyte distribution. Inhomogeneous, even local areas without electrolyte access, have obvious advantages.

2) The present invention not only has an array flow tube that can directly deliver the electrolyte to the processing area, but also has a reverse array flow tube that can discharge the electrolyte in time to take away the electrolysis product and reaction heat. Compared with the traditional electrolytic cutting process, due to The slit is narrow, and the electrolysis products and reaction heat are difficult to discharge from the processing area, resulting in deterioration of processing conditions, and even short circuits, which seriously affect processing efficiency and processing accuracy. It has obvious advantages.

Description of drawings

Fig. 1 is a schematic diagram of an electrolytic casing cathode device based on a bidirectional array flow tube.

Figure 2(a) is a schematic diagram of the working principle of the bidirectional flow tube cathode.

Fig. 2(b) Schematic diagram of the forward and reverse flow tube arrangement of the flat cathode.

Figure 3(a) Schematic diagram of the cathode body capable of cutting a circular structure.

Figure 3(b) is a schematic diagram of the cathode body capable of cutting hexagonal hole structures.

Fig. 3(c) is a schematic diagram of the cathode main body capable of cutting dovetail groove structure.

Fig. 3(d) is a schematic diagram of the main body of the cathode capable of cutting "N" shaped hole structure.

Fig. 4(a) Schematic diagram of the forward and reverse flow tube arrangement of the flat cathode.

Fig. 4(b) Schematic diagram of the flat-cut cathode body after brazing and welding.

Fig. 4(c) Schematic diagram of the cathode substrate structure of the bidirectional flow tube.

Fig. 4(d) Schematic diagram of the structure of the plate-cut cathode body and the cathode substrate after brazing.

Fig. 4(e) Schematic diagram of a nested cathode device for electrolysis based on bidirectional array flow tubes.

The names of the labels in the figure are: 1. Tool cathode main body, 2. Forward array flow tubes, 3. Reverse array flow tubes, 4. Upper end of flow tubes, 5. Upper middle part of flow tubes (cut-off position), 6. Lower end of flow tube, 7. Cathode main body, 8. Reverse array flow tube outlet, 9. Liquid storage chamber, 10. Upper cover, 11. O-ring, 12. High-pressure pipe joint, 13 Plugging filler, 14 Brazing Brazing filler metal for welding, 15 cathode base body, 16 electrode base body sealing ring groove, 17 cathode base body connecting threaded hole, 18 narrow slit for clamping cathode body.

detailed description

Principle of the present invention, structure and working process are further described invention below in conjunction with accompanying drawing.

Referring to Figures 1 and 2 (a), (b), a bi-directional array tube-based electrolysis casing cathode device of the present invention mainly includes a cathode base 15, a cathode body 7, an upper cover 10, and a high-pressure pipe joint 12. The cathode base body 15 is slotted and screwed to the upper cover 10 to form a liquid storage chamber 9 . The cathode main body 7 is covered with forward array flow tubes 2, part of the array flow tubes are cut off at 5 places in the middle and upper part, the upper part of the cut-off part is blocked with filler 13 (low melting point and gold or acid and alkali resistant glue), and the lower part of the cut-off part is unblocked to form a reverse array Flow tube 3, forward and reverse array flow tubes achieve the effect of rapidly updating the electrolyte.

Referring to Fig. 2 (a), (b), it is a schematic diagram of the working principle of the electrolytic nesting cathode device based on the bidirectional array flow tube. The cathode body 7 is covered with array flow tubes, and the electrolyte enters from the upper end of the forward array flow tube 2 4. Enter the electrolytic processing area without hindrance. After participating in the reaction in the processing area, the electrolyte flows upward along the reverse array flow tube 3 until it reaches the liquid outlet 8 and flows out of the cathode 1 of the tool. During the whole processing process, the electrolyte flow pipe is unobstructed and the flow channel is controllable, which can make the electrolyte in the processing area be updated in time, take away the electrolysis products and heat in time, effectively improve the processing efficiency and precision, and significantly reduce energy consumption.

Referring to Figure 3(a)-(d), it is a schematic diagram of the structure of the cathode body 7 of the double-flow tube with different shapes, Figure 3(a) is a schematic diagram of the cathode body capable of cutting a circular structure, and Figure 3(b) is a schematic diagram of the cathode body capable of cutting a hexagonal hole structure , Figure (3c) is a schematic diagram of a cathode body capable of cutting a dovetail groove structure, and Figure 3(d) is a schematic diagram of a cathode body capable of cutting an "N"-shaped hole structure. According to the different shapes of the parts to be processed, various shapes of double-flow tube electrode bodies can be designed, and tens of thousands of shapes of the cathode body 7 can also be designed except as shown in the illustration.

Referring to Fig. 4(a)-(e), the design and manufacture method of the plate cutting tool electrode is illustrated as an example.

Figure 4(a) is a schematic diagram of the arrangement of forward and reverse flow tubes of the flat cathode. The specific implementation method is that before welding, the fine copper tubes (0.8-1.5 mm in outer diameter) are arranged closely, and 5 places in the middle and upper part of the copper tubes are selected at intervals to cut off, and the upper part of the cut-off place is blocked with filler 13 (low melting point alloy or acid and alkali resistant glue) , the lower part of the truncation is unblocked to form the reverse array flow tube 3 , and the unblocked flow tube forms the forward array flow tube 2 .

As shown in Figure 4 (b) the schematic diagram of the manufacturing method of the flat plate cutting cathode main body 7 after brazing and welding, the specific implementation method is to adopt the brazing method to firmly weld the micro copper tubes arranged in Fig. 4 (a), in the welding process, use brazing Material 14 fills up the defects between the tubes to form a smooth surface, and at the same time, be careful not to block the copper tubes that should be connected.

Figure 4(c) is a schematic diagram of the structure of the bidirectional flow tube electrode base. Specifically, the cathode base 15 is slotted first, and can be closely connected with the upper cover 10 to form a liquid storage chamber 9, and the sealing ring groove is milled on the upper part of the cathode base 15. According to the required electrolyte pressure during processing, the pressure to be borne by the upper cover 10 is determined to determine the strength of the connecting bolts, and the corresponding threaded holes 17 are processed. Finally, according to the shape of the cathode main body 7 , a narrow slit 18 just accommodating the cathode main body 7 is cut by wire electric discharge at the lower part of the cathode base body 15 .

Figure 4(d) is a schematic diagram of the structure of the plate-cut electrode body and the cathode substrate after brazing and welding, specifically, the cathode body 7 welded in Figure 4(b) is firmly welded into Figure 4(c) for processing by brazing Out of the narrow gap 18 miles.

As shown in Figure 4(e), the upper cover 10 is threaded on the cathode base 15, the upper cover 10 is threaded to the high-pressure pipe joint 12, and the high-pressure pipe joint 12 is connected to a high-pressure pipe that can be passed into the electrolyte, so far it has a complete two-way flow pipe structure The tool electrode 1 is finished.

There are many specific application ways of the present invention, and the above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of electrolytic nesting material cutting with bidirectional array flow tube electrodes in the present invention, , Some improvements can also be made to the specific embodiment, and these improved design and manufacture methods and device structures should also be regarded as the scope of protection of the present invention.

Claims (3)

1. a kind of electrolysis jacking negative electrode producing device based on bilateral array flow tube it is characterised in that：It includes cathode base (15), cathode body (7), upper lid (10), O-ring seal (11) and high-pressure pipe connector (12)；O-ring seal (11) is set in the moon In the groove on pole matrix (15) top, and by bolt, upper lid (10) is linked together with cathode base (15)；High-pressure pipe connector (12) one end is connected with Shang Gai (10) by screw thread, and the other end connects high-voltage tube；Cathode base (15) central part fluting and upper lid (10) form liquid storage cylinder (9), in cathode body (7), be covered with positive array flow tube (2), partial array flow tube upper position (5) place Block, truncated position top, using blocking implant (13), is blocked with low-melting alloy or acid and alkali-resistance glue, truncated position bottom is smooth The reverse array flow tube (3) of logical formation, forward and reverse array flow tube reaches the quick effect updating electrolyte.

2. a kind of electrolysis jacking negative electrode producing device based on bilateral array flow tube according to claim 1, its feature exists In：Welding construction required electrolysis jacking electrode, positive array flow tube (2) and reverse array stream are combined using spark cutting The construction of pipe (3) needs first by fine copper pipe according to profile close-packed arrays to be processed, is then welded copper pipe using soldering tech It is connected into shape；In order to construct reverse array flow tube (3), partly positive array flow tube upper-end part of driving (4) implant (13) will be blocked, just Block to array flow tube upper position (5) place, positive array flow tube (2) bottom being truncated becomes for reverse array flow tube (3)；Reversely array flow tube lower end part (6) place is reverse flow channel entry point, is reverse runner exit (8) at upper position；Positive and negative Take away heat and electrolysate in time to the construction of array flow tube, so that Electrolyzed Processing is stably carried out.

3. a kind of electrolysis jacking negative electrode producing device based on bilateral array flow tube according to claim 1, its feature exists In：It is to be passed through electrolyte in cathode body (7), cathode body (7) need to be mounted to the narrow slit of cathode base (15) wire cutting In, firmly connect where like using method for welding；The liquid storage cylinder (9) processing on cathode base (15) top is used for storing i.e. The electrolyte of processing district, the threaded upper lid (10) in liquid storage cylinder (9) top will be entered, junction is sealed with O-ring seal (11), Upper lid (10) pipe screw thread connects high-pressure pipe connector (12), and high pressure high flow rate electrolyte is passed through electrode matrix and battle array by this pipe joint Row flow tube.