72 results about "Phosphor bronze" patented technology

A method of assembling and installing a vertical cable infill deck railing system is disclosed in which cables are strung two parallel rails, pulled taut, and tightened into position. The cable railing system resists galvanic corrosion by using a flange nut cap to separate dissimilar metals. The flange nut cap also prevents the associated flange nut from falling if it is overly loosened. Galling is reduced without the need for additional coatings by using a phosphor bronze threaded crimp.

The invention provides an optical element six-degree-of-freedom adjusting and clamping device and an assembling method, and relates to the technical field of optical instruments. The device comprises a supporting base, a ball head adjusting screw, a cantilever spring mechanism and an elastic opposite ejection mechanism. The bottom of the support base is provided with a triangular layout through hole group. The center of gravity of the optical element is in the triangle. The cantilever spring mechanism and the ball head adjusting screw are combined to control Z-axis displacement and rotation around the X / Y axis, and the elastic opposite ejection mechanism and the ball head adjusting screw are combined to control X / Y-axis translation and rotation around the Z axis. All contact interfaces adopt a spherical surface-plane point contact design, and tungsten steel or phosphor bronze is selected as a material. According to the invention, six-degree-of-freedom independent precision adjustment of the optical element can be realized, the error of a clamping surface is as low as 0.068 mu rad, the structure is compact, and the adaptability is high.

The invention relates to the technical field of radio frequency coaxial connectors, in particular to a tin-phosphor bronze radio frequency coaxial connector assembling machine, an assembling method and a radio frequency coaxial connector suitable for the assembling machine, the tin-phosphor bronze radio frequency coaxial connector assembling machine comprises a machining table, a fixing plate and a supporting plate, the fixing plate and the supporting plate are fixed to the machining table, and a conveying assembly is arranged on the fixing plate; the lower clamping assembly is arranged on the machining table, and the lower clamping assembly comprises clamping plates which are symmetrically arranged; the lifting assembly is arranged on the supporting plate, an upper clamping assembly is arranged on the lifting assembly, and the upper clamping assembly comprises clamping plates which are symmetrically arranged; the spacing regulation and control mechanism is arranged on the supporting plate and is connected with the upper clamping assembly; and the follow-up rotating assembly is arranged on the lifting assembly and is connected with the spacing regulation and control mechanism, mutual plugging of the connectors is realized through bidirectional clamping of a clamping plate and a clamping plate, and after plugging is completed, drawing force is applied to the connectors so as to test whether the connectors are plugged in place or not.

The invention relates to a device for removing an oxide layer on the surface of tin-phosphor bronze before hot rolling treatment, and belongs to the technical field of tin-phosphor bronze surface treatment.The device comprises a supporting structure used for supporting a grinding mechanism, and the supporting structure is provided with a chuck and a driving mechanism which are used in cooperation with the grinding mechanism; a knocking mechanism and a limiting plate which are used for treating tin-phosphor bronze are arranged on one side of the grinding mechanism, and a liquid conveying mechanism used in cooperation with the grinding mechanism is further arranged on the supporting structure. The knocking mechanism comprises a knocking block and a connecting frame arranged above the knocking block, and a mounting shaft for mounting the knocking block is fixed to the bottom side of the connecting frame. After the device for removing the surface oxide layer of the tin-phosphor bronze before hot rolling treatment is used in cooperation with a knocking function, the device for removing the surface oxide layer of the tin-phosphor bronze has remarkable advantages in the aspects of removal efficiency, surface quality, treatment stability, equipment service life, production efficiency and flexibility, environmental protection, energy conservation and the like.

A brazed joint that can suppress the decrease in joint strength even when brass (50, 60) containing bismuth instead of lead and stainless steel (10) are joined by brazing with a solder material, and a method for producing the brazed joint are provided.A brazed joint made of stainless steel (10) and brass (50, 60), provided with a layered structure in which stainless steel (10), a first brazing material layer (20), a barrier layer (30), a second brazing material layer (40) and brass (50, 60) are arranged successively in layers, wherein the barrier layer (30) is a layer that blocks the transfer of bismuth in the brass (50, 60) to the first brazing material layer (20) by brazing the stainless steel (10) and the brass (50, 60), wherein the barrier layer (30) contains at least either a brass (50, 60) or a phosphor bronze, and a brazing material from which the first brazing material layer (20) and the second brazing material layer (40) consist is liquid at 680 to 800°C.

To provide a brazed joint which can inhibit reduction of joint strength even when a brass which contains bismuth in place of lead and stainless steel are brazed with a brazing material, and to provide a manufacturing method of the brazed joint.SOLUTION: A brazed joint of stainless steel and a brass includes a layer structure in which the stainless steel, a first brazing material layer, a barrier layer, a second brazing material layer, and the brass are sequentially arranged in a laminar manner. The barrier layer blocks bismuth in the brass from being moved to the first brazing material layer by brazing the stainless steel and the brass to each other. The barrier layer is at least one of brass and phosphor bronze. A brazing material forming the first brazing material layer and the second brazing material layer is a liquid at a temperature ranging from 680 to 800°C.SELECTED DRAWING: Figure 1

The invention discloses a bright annealing process for a copper alloy wire. The bright annealing process comprises the following steps: coating the surface of the copper alloy wire with a composite solid lubricant; the heating / cooling rate of a preheating zone (200-350 DEG C), the heating / cooling rate of a main annealing zone (450-650 DEG C) and the heating / cooling rate of a slow cooling zone (300-450 DEG C) are smaller than or equal to 15 DEG C / s; and an atomized anti-oxidation liquid film is applied to an outlet of the slow cooling area. According to the bright annealing process for the copper alloy wire, the lubricant with specific components is decomposed at a high temperature to form an in-situ protection layer, generation of oxide skin is inhibited in combination with gradient temperature control, and a bright surface with the surface roughness Ra smaller than or equal to 0.2 micron can be achieved without introducing hydrogen or nitrogen. The cost is reduced by more than 40%, and the method is suitable for easily-oxidized copper alloys such as tin-phosphor bronze and cupronickel.

The invention discloses a process production method of a tin-phosphor bronze alloy, which is characterized in that the tin-phosphor bronze alloy comprises the following components in percentage by mass: 0.6-0.7% of Sn; the copper alloy comprises the following components in percentage by weight: 0.10-0.25% of P, 0.05-0.10% of Te, less than or equal to 0.10% of other impurity elements and the balance of According to the method, the rod material with the diameter phi of 12.5 mm is produced through 2000 kg horizontal continuous casting. The process route comprises the steps of rod material continuous casting, cold rolling, softening annealing, reverse drawing and peeling, reverse drawing and peeling, softening annealing, reverse drawing and peeling, reverse drawing, softening annealing and reverse drawing of a finished product. According to the process route, the organization structure of the material is converted into a compact cold drawing organization from a coarse as-cast organization. And due to the increase of the tellurium element, the machinability of the material is improved by 15%, and the tin-phosphor bronze material obtained through the process route is compact in structure, fine in grain, high in strength and excellent in comprehensive performance. The tensile strength Rm of the tin-phosphor bronze material is larger than or equal to 800 MPa, the ductility A is larger than or equal to 3%, the machinability is 80% or above, and the electric conductivity is larger than or equal to 14% IACS.

The utility model provides a replaceable phosphor copper mesh filter assembly, which relates to the technical field of phosphor copper meshes, and comprises a phosphor copper mesh and further comprises a mounting assembly, and the mounting assembly is composed of two mounting fixing covers arranged on two sides of the phosphor copper mesh; the clamping and extruding assembly is composed of extruding limiting plates arranged between the phosphor copper mesh and the mounting and fixing cover, the number of the extruding limiting plates is two, the two extruding limiting plates are symmetrical about the center of the phosphor copper mesh, and limiting and fixing cones are arranged on the sides, close to each other, of the two extruding limiting plates; the two extrusion limiting plates are symmetrically arranged relative to the center of the phosphor copper mesh, when the two extrusion limiting plates get close to each other, the limiting fixing cones on the extrusion limiting plates can make contact with the phosphor copper mesh, the limiting fixing cones can generate elastic deformation and can be tightly embedded into grids of the phosphor copper mesh, uniform extrusion force and limiting effect are applied to the phosphor copper mesh from the two sides, and therefore the phosphor copper mesh is prevented from being damaged. And the phosphor copper mesh is firmly fixed in the mounting fixing cover.

The utility model belongs to the technical field of tin-phosphor bronze belt production, and particularly relates to tin-phosphor bronze belt rolling. The utility model provides a reel for cold rolling of a high-yield-ratio and high-elasticity tin-phosphor bronze belt, which comprises a winding drum suitable for winding the tin-phosphor bronze belt, and a left baffle disc and a right baffle disc are arranged on two sides of the winding drum; the pressing and holding piece is arranged at the edge of the left baffle disc; the locking position is arranged at the edge of the right baffle disc; during locking, the pressing and holding piece stretches across the winding drum to be matched with the locking position, and the tail end of the tin-phosphor bronze belt on the outermost circle is extruded and locked. The pressing and holding piece is arranged on the left blocking disc, the locking position is arranged on the right blocking disc, the pressing and holding piece stretches across the winding drum and stretches into the locking position by rotating the pressing and holding piece, the tin-phosphor bronze belt on the outermost circle of the winding drum is pressed, the phenomenon that the coiled tin-phosphor bronze belt is loose after the winding disc is taken down from the winding device is avoided, and the winding efficiency is improved. And the production continuity of the tin-phosphor bronze belt is improved.

An e-cigarette PV that includes an air pressure valve or device so that excess air can escape from an e-liquid reservoir in the PV when that reservoir is being filled under pressure with e-liquid from a parent reservoir. The valve or device is a barrier made of an air-porous material, such as a sintered polymer or metal, coated with or otherwise including a barrier or layer of an air-porous substance that is not porous to e-liquid, such as an oleophobic material or a hydrophobic or super-hydrophobic material. The oleophobic material is one of: sintered phosphor bronze, sintered stainless steel and sintered PU plastic.

The invention discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming, the method comprises the following steps: by taking a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a compound plate, sequentially laying a base plate, the Q235B steel plate, a support column, the tin-phosphor bronze plate, a protective layer, a fence structure, a low-detonation-velocity rock expanded ammonium nitrate fuel oil explosive layer and an inert layer on an explosion field from bottom to top, and forming the composite plate. And then the tin-phosphor bronze plate and the Q235B steel plate are subjected to metallurgical bonding after high-speed collision by detonating the explosive, the large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is larger than 98%, the interface shear strength exceeds 274 MPa, and the composite plate has the advantages of excellent high strength, wear resistance and the like of tin-phosphor bronze and low cost of Q235B steel.

The invention relates to the technical field of cutting devices, and particularly discloses a cutting device for tin-phosphor bronze belt production and processing, which comprises a supporting bracket, a working bracket is fixedly connected to the top of the supporting bracket, and a first motor is fixedly connected to one side of the top of the working bracket through a motor bracket; a driving shaft of the first motor penetrates through the working support and is fixedly connected with a first rotating roller, the end, away from the first motor, of the first rotating roller is rotationally connected with one side of the working support, and the part, located on one side of the first rotating roller, of the inner wall of the working support is fixedly connected with a first electric guide rail; according to the cutting device for tin-phosphor bronze belt production and processing, through cooperation of the flattening pretreatment device and the cutting device, the temperature during cutting is reduced, the cutting efficiency is improved, the cutting quality is improved, and the cutting quality is improved. And the service life of the cutter is prolonged.

The invention discloses a production process of a tin-plated phosphor bronze wire for a transformer, and the production process comprises the following steps: S1, deoiling, pickling and activating a phosphor bronze wire to obtain a first phosphor bronze wire; s2, electroplating the first phosphor bronze wire in a pre-plating solution dissolved with tin methanesulfonate, indium trichloride and manganese sulfate, and washing to obtain a second phosphor bronze wire; s3, tinning the surface of the second phosphor bronze wire; the pre-plating solution further comprises a pH regulator, a complexing agent and an organic plating assistant. According to the production process of the tin-plated phosphor bronze wire for the transformer, indium salt, tin salt, manganese salt and indium salt are introduced into a pre-plating solution with tin salt and manganese salt as main salts, and reduction deposition is carried out on the surface of a copper wire at the same time to form a tin-manganese-indium alloy layer; the tin-manganese-indium alloy layer is favorable for optimizing the mechanical properties such as bending times, tensile strength and the like and the service life of the tin-plated phosphor bronze wire. The invention also discloses the tin-plated phosphor bronze wire prepared by the production process of the tin-plated phosphor bronze wire for the transformer.

The utility model discloses a piston for a GM refrigerating machine. The piston comprises a first-stage piston and a second-stage piston. The first-stage piston is provided with a first-stage piston cavity, and first-stage cold storage filler is arranged in the first-stage piston cavity. One end of the second-stage piston is connected with one end of the first-stage piston, the second-stage piston is provided with a second-stage piston cavity, and second-stage cold storage filler is arranged in the second-stage piston cavity. The first-stage cold storage filler comprises a phosphor bronze punched plate, a first phosphor bronze net layer, a first-stage cold storage pill layer and a second phosphor bronze net layer which are sequentially arranged in the axial direction of the piston. The second-stage cold storage filler comprises a first check ring, a third phosphor bronze net layer, a first supporting layer, a fourth phosphor bronze net layer, a second check ring, a lead shot layer, a first holmium copper net layer, a magnetic cold storage shot layer, a second holmium copper net layer, a second supporting layer and a third holmium copper net layer which are sequentially arranged in the axial direction of the piston. The piston for the GM refrigerating machine has larger cold storage capacity and lower limit bottom temperature.

The application discloses a large-size tin-phosphor bronze / Q235B composite plate and a preparation method thereof, and belongs to the field of material forming. The method uses a Q235B steel plate as a base plate and a tin-phosphor bronze plate as a composite plate, lays, from bottom to top, a backing plate, the Q235B steel plate, a supporting column, the tin-phosphor bronze plate, a protective layer, an enclosure structure, a low-explosive-speed rock expanded ammonium nitrate oil explosive layer and an inert layer on an explosion field, and then causes the tin-phosphor bronze plate and the Q235B steel plate to collide at a high speed by detonating the explosive, so that metallurgical combination is caused, a large-size tin-phosphor bronze / Q235B composite plate is obtained, the interface bonding rate of the obtained composite plate is greater than 98%, the interface shear strength is greater than 274 MPa, and the composite plate has the excellent high strength, wear resistance and other performances of the tin-phosphor bronze and the low-cost advantage of the Q235B steel.

The utility model relates to sealing strip technical field, concretely is a kind of shock resistance sealing strip for electronic appliance, the composite material of silicon rubber main part and polyurethane shock resistance layer, through the synergistic effect of material of different elastic modulus, the attenuation of broadband vibration is realized. The elastic deformation capacity of phosphor bronze spring post can absorb vibration energy below 2000Hz, and the damping characteristic of polyurethane cavity is remarkable to low-frequency vibration (10~50Hz) buffering effect, the composite material of silicon rubber main part and polyurethane shock resistance layer, through the synergistic effect of material of different elastic modulus, the attenuation of broadband vibration is realized. The elastic deformation capacity of phosphor bronze spring post can absorb vibration energy below 2000Hz, and the damping characteristic of polyurethane cavity is remarkable to low-frequency vibration (10~50Hz) buffering effect.

The utility model provides a wear-resistant hardware pin, and relates to the technical field of electronic connectors, the wear-resistant hardware pin comprises a main body mechanism, the outer surface wall of the main body mechanism is fixedly sleeved with a clamping mechanism, the main body mechanism comprises a conductive fiber layer, and the outer surface wall of the conductive fiber layer is fixedly connected with a phosphor bronze hardware pin main body. The outer surface wall of the phosphor bronze hardware contact pin body is provided with a group of first mounting grooves, the outer surface walls of the group of first mounting grooves are fixedly sleeved with protective rings, the top of the phosphor bronze hardware contact pin body is provided with a conical head, and the outer surface wall of the conical head is fixedly sleeved with a protective sleeve; the outer surface wall of the phosphor bronze hardware pin body is fixedly sleeved with two connecting rings. The mechanism is made of a novel material, and a protective ring and a conical head are arranged outside the contact pin, so that the adhesive force and the wear resistance of the contact surface are further improved, the friction force is increased, meanwhile, the wear is reduced, and the durability of equipment is improved.

The utility model provides a phosphor copper ball polishing device. The first polishing belt, the second polishing belt and the polishing plate are installed on the installation frame, and a polishing gap is defined among the three. And the discharging mechanism is fixedly mounted on the mounting frame. A discharging groove is formed between the discharging mechanism and the grinding plate. A through opening is formed in the mounting frame and located below the grinding gap. And one end of the discharge pipe is connected with the bottom end of the through hole and the other end is connected with the storage box. A water inlet and a water outlet are formed in the storage box, and cooling water is contained in the storage box. The baffle is slidably mounted on the mounting frame and located in the middle of the polishing gap and the through opening. The scrap box is arranged under the discharging pipe. And a plurality of small holes are formed in the baffle and the discharging pipe, and chips generated by grinding can fall into the chip box through the small holes. The polishing device can achieve the effect of improving the polishing working efficiency of the phosphor copper balls, and is high in automation degree, comprehensive in function and high in practicability.

The utility model relates to the technical field of tin-phosphor bronze belt production and processing, in particular to a tin-phosphor bronze belt annealing device which comprises a preheating box, a high-temperature box and a cooling box which are communicated with one another to form an annealing chamber. A conveying supporting net is arranged in the middle of the preheating box, the middle of the high-temperature box and the middle of the cooling box, a copper strip inlet is formed in one side of the preheating box, a copper strip outlet is formed in one side of the cooling box, and cleaning structures are arranged on the edge of the copper strip outlet and the edge of the copper strip inlet. The cleaning structures are arranged at the copper strip outlet and the copper strip inlet, so that metal attachments on the surface of the tin-phosphor bronze strip can be prevented from being integrated with the tin-phosphor bronze strip in the annealing process to form salient points, the tin-phosphor bronze strip cooled by water vapor can be cleaned, and the annealing efficiency is improved.

The utility model discloses a square cabin with high electromagnetic shielding effectiveness. Conductive shielding cloth is adhered to the inner surface of each cabin plate of the square cabin; a metal gasket is arranged between the window and the cabin plate, and the metal gasket comprises silver-plated brass and a monel alloy woven wire mesh which are stacked in the direction from the cabin plate to the window; sealing grooves are formed in the door opening frame and the door frame of the cabin door, shielding sealing strips are filled in the sealing grooves, and each shielding sealing strip comprises a rubber core and a tin-plated phosphor bronze wire mesh wrapping the rubber core. On the basis that an original shelter structure is not changed or damaged, shielding effectiveness treatment is conducted on the assembling and matching positions of doors and windows of the shelter in a targeted mode, and therefore the overall shielding effectiveness of the shelter is improved.

An e-cigarette PV that includes an air pressure valve or device so that excess air can escape from an e-liquid reservoir in the PV when that reservoir is being filled under pressure with e-liquid from a parent reservoir. The valve or device is a barrier made of an air-porous material, such as a sintered polymer or metal, coated with or otherwise including a barrier or layer of an air-porous substance that is not porous to e-liquid, such as an oleophobic material or a hydrophobic or super-hydrophobic material. The oleophobic material is one of: sintered phosphor bronze, sintered stainless steel and sintered PU plastic.

The application discloses a kind of air cushion furnace annealing tin phosphor bronze rate prediction method, belong to metallurgical field.The method is by the tin phosphor bronze to be annealed in rolling and placed in muffle furnace to carry out simulation annealing treatment, subsequently the simulation parameter obtained is calculated to obtain the annealing rate required when the batch tin phosphor bronze is annealed in air cushion furnace, the prediction method result is accurate, and tin phosphor bronze can realize the expected hardness after using the prediction result to carry out annealing treatment in air cushion furnace, significantly reduce production energy consumption and raw material cost.

The present application discloses a laser welding method for brass workpieces and phosphor bronze workpieces. The method includes the steps of: assembling the brass workpiece and the phosphor bronze workpiece onto a welding jig, the brass workpiece and the phosphor bronze workpiece; using nanosecond green light to weld the brass workpiece and the phosphor bronze workpiece, the wavelength of the nanosecond green light being 510 - 535 nm and the pulse width being 195 - 1050 ns; the average output power of the laser being 30 - 55 W, the welding speed being 45 - 85 mm / s, and the laser focus position being 0 to -0.3 mm. The laser welding method for brass workpieces and phosphor bronze workpieces of the present application has a simple process, high production efficiency, small heat influence on the solder joint edge, stable tensile force, high metal bonding strength, and is economical and applicable.

The invention discloses a tin-phosphor bronze / Q235B composite sheet and a preparation method thereof, and belongs to the field of metal material forming. According to the method, an optimized process route of explosive cladding, stepped annealing, hot rolling and cold rolling is adopted, a tin-phosphor bronze plate and a Q235B steel plate are metallurgically bonded through an explosive welding composite method, a composite thick plate is obtained, then stepped annealing heat treatment is conducted, hot rolling is conducted after preheating, and finally the composite thin plate is obtained through cold rolling. The method breaks through the limitation of a single composite technology, has the characteristics of high efficiency, stability and low production cost, and can be used for preparing the composite thin plate with excellent performance. According to the prepared tin-phosphor bronze / Q235B composite thin plate, the yield strength at the room temperature reaches 580-640 MPa, the tensile strength reaches 660-700 MPa, and the percentage elongation after fracture is 5%-6.5%.

This invention discloses a tin-phosphorus bronze / Q235B composite thin plate and its preparation method, belonging to the field of metal material forming. The method employs an optimized process route of "explosive bonding—stepped annealing—hot rolling—cold rolling." Explosive welding is used to metallurgically bond tin-phosphorus bronze plates with Q235B steel plates to obtain a composite thick plate. This is followed by stepped annealing heat treatment, preheating, and hot rolling, and finally cold rolling to obtain the composite thin plate. This method overcomes the limitations of single-component technologies, featuring high efficiency, stability, and low production cost, and can produce composite thin plates with excellent performance. The prepared tin-phosphorus bronze / Q235B composite thin plate has a room temperature yield strength of 580~640MPa, a tensile strength of 660~700MPa, and an elongation after fracture of 5%~6.5%.

The utility model relates to the technical field of glasses, and discloses a track type bayonet screw-free elastic glasses hinge structure, which comprises an end piece, a glasses leg and an end piece inner frame, the end piece and the glasses leg are made of titanium metal, the end piece inner frame is made of phosphor copper metal, and the end piece, the glasses leg and the end piece inner frame are in screw-free connection through a track structure. The bottom of the end piece and the bottom of the end piece inner frame are provided with notches corresponding in position, the necks of the glasses legs on the side faces of the glasses legs are vertically installed from the bottoms to complete connection, and the hidden track grooves with the radian in the top of the end piece inner frame and the convex grooves with the radian in the front ends of the glasses legs can be tightly combined to ensure that the glasses legs are stably opened and closed in the end piece. The top of each glasses leg is provided with a through forked position, so that the glasses legs have an opening and closing elastic function, can elastically expand outwards by 12 degrees in a 0-degree state, improve the wearing comfort and prevent falling off, the forked positions are tightly closed to form a small square to enhance the stability when swinging to 45 degrees, and the forked positions are opened to return to a state of being matched with a large square track in an end piece when swinging to 90 degrees to form a 90-degree elastic effect.

The utility model belongs to phosphor bronze production technical field, concretely relates to a kind of phosphor bronze tablet reaction container of high mixing efficiency, including reaction tank, feeding mechanism, material bucket, the tank top of reaction tank is connected exhaust valve and mixing pipe, exhaust valve is connected exhaust pipeline and material bucket by three-way pipe, the both ends of feeding mechanism are connected nitrogen pipeline and mixing pipe respectively, the throat of venturi in feeding mechanism is connected lower three-way pipe by material extraction pipe, lower three-way pipe bottom end blind dead and top end intercommunication guide slot, guide slot top is connected material bucket bucket mouth by sanitary clamp, the variable diameter section part of material bucket is threadedly connected bucket cover, unscrambling cover subassembly is rotatably installed on lower three-way pipe, unscrambling cover subassembly transmission connection bucket cover. Through the cooperation of positive pressure nitrogen and venturi structure, safe negative pressure mixing feeding in the sealing system formed by reaction tank, feeding mechanism and material bucket is realized, and the safety of feeding and the uniformity of mixing are effectively improved.

This invention relates to a bipolar adjustable plasma electrode, comprising: an electrosurgical head; two first tubes, the electrosurgical head spanning between the two first tubes, and the first tubes containing a high-temperature resistant wire that is in contact with and conductive to the electrosurgical head; a second tube connected to the end of the two first tubes away from the electrosurgical head, and the first and second tubes being rotatably coupled; and a third tube containing a phosphor bronze rod, the phosphor bronze rod being electrically connected to a plug via a cable. Only a brief energization of the heating wire is needed to melt the phase-change conductive material, allowing easy adjustment of the angle between the two first tubes, thereby changing the shape of the electrosurgical head to adapt to different anatomical sites or surgical approaches. The frictional force between the first and second tubes maintains the shape of the electrosurgical head in the absence of external force. After power is cut off, the phase-change conductive material rapidly solidifies, locking the relative positions of the high-temperature resistant wire and the phosphor bronze rod.