CN102357695B - Method and device for soldering metal parts and components by adopting high-frequency induction brazing - Google Patents
Method and device for soldering metal parts and components by adopting high-frequency induction brazing Download PDFInfo
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- CN102357695B CN102357695B CN201110318708.8A CN201110318708A CN102357695B CN 102357695 B CN102357695 B CN 102357695B CN 201110318708 A CN201110318708 A CN 201110318708A CN 102357695 B CN102357695 B CN 102357695B
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Abstract
The invention discloses a method for soldering metal parts and components by adopting high-frequency induction brazing, which can complete high-frequency brazing assembly molding of multiple soldering points of multiple soldering parts in one time. The method is dependent on a device, which comprises a high-frequency coil and a magnetic ring pressure lever, wherein the high-frequency coil and the magnetic ring pressure lever are connected with a high-frequency controller respectively, and are controlled uniformly by the high-frequency controller. By utilizing the device, the method comprises the following steps of: treating the surface of a part to be soldered; assembling the soldering device, and distributing the high-frequency coil and a magnetic head pressure lever; selecting a brazing filler metal to be matched with the part to be soldered, and preparing paste brazing flux FB303P; optimally allocating positions and quantities of the brazing filler metal and the brazing flux; setting corresponding process values by means of the high-frequency controller to perform heat soldering, preserving the temperature, switching off, and cooling by using cooling water to the room temperature. According to the method, one-time soldering molding can be realized by multiple soldering of multi-process multi-point and other processes.
Description
Technical field
The invention belongs to high-frequency welding technical field, relate to a kind of high-frequency induction brazing welding method of metallic element, the invention still further relates to the welder that this kind of high-frequency induction brazing welding method used.
Background technology
The high-frequency induction brazing solder technology of existing metallic element is that (induction welding is divided into power frequency according to the frequency difference of power supply for induction welding technology a kind of, intermediate frequency, superaudio, high frequency, hyperfrequency induction welding basic principle is identical), be applied in high and low voltage electrical equipment, machine-building, automobile making, generating equipment, solar energy, electric power accessory, air-conditioning, compressor, cooler, light fixture, motor, shipbuilding, rail vehicle, Aero-Space, weaponry, nuclear industry, the industrial circles such as petrochemical industry are with a wide range of applications, and are conventionally used in T shape, I shape, H shape, cable sleeve, tubing, the longitudinal seam welding of the section bar such as fin and pipe, the butt welding of the symmetric shape of pipe or plate (band) material, its basic principle is with alternating current, to flow to the conductor (being generally the induction coil that a siphunculus is made vertical direction multilayer) that is curled into ring-type exactly, produce thus flux, metal is placed wherein or nearby, flux will connect metallic object, from the direction of paying, producing vortex flow (rotatory current) with flux, so induced-current is under the impact of vortex flow, metal self-heating melts brazed seam and solder and it is sprawled, Here it is eddy-current heating.With this, to heating objects such as metals, under non-contacting state, heat.At this moment the characteristic of vortex flow is: on the approaching object of coil, concentrate, eddy-current heating shows on the surface of object compared with feature strong and that the inside is weak, by such principle, come the position of the needs of heating object to concentrate heating, reach instantaneously heated effect, thereby enhance productivity and workload, reach welding object.The setting that the main difficulty of this technology is induction coil (copper pipe of interior copper cooling water) with treat mating of energy between weldment; This high-frequency induction brazing solder technology extensively adopts in industrial production, but in many instances, adopts this technology to be difficult to obtain good effect, and it is not enough, and main manifestations is:
The heat induced coil manufacturing technology of prior art, a copper tube to be turned in vertical direction to the coil of multilayer spring-like shape, this coil only can group welding piece of an induction welding, cannot realize and once process a plurality of group welding pieces simultaneously, helpless when running into requirement and enhance productivity and expand output, become the biggest obstacle that production capacity and economic benefit improve in enterprise.
Common metal will carry out induction welding, select suitable welding equipment and welding procedure very crucial, conventionally way is first welded part constantly repeatedly to be studied, until when studying result and welding quality and requiring to meet, using these parameters as basic parameter, and then submission device fabrication manufacturer, device fabrication manufacturer studies basic parameter according to the requirement of making product with these, selection offers welding manufacturing enterprise than existing force large one equipment to second gear, welding manufacturing enterprise is just applied in production using studying the condition of basic parameter as welding procedure, this way, reliability and the compatibility of the equipment of selecting, Weldability, product switching etc. is restricted, determine equipment and process to study cost high, definite like this technology can produce leakiness weld seam, comprise following bad phenomenon: mother metal autoclasis (penetrability fire check), corrosion, field trash (black burning oxide), fusion not enough (cracking), edge fusion is not enough, middle part fusion not enough (middle part cold welding), weldbonding (cold welding), cast welding (fragility weldering), pore (pin hole) etc.
These bad phenomenon on the impact of welded part are: reduce sealing, reduction weld strength and electric conductivity, absorption absorption moisture, cause weld corrosion, these all can cause very large waste.
Particularly run into dissimilar metal iron copper part, copper silver part, copper part, silver part, copper facing, silver plate, titanium steel, titanium stainless steel, too the parts such as ferrotianium adopt lap weld, use single induction coil to approach and treat weldment surface, or treat that by welded weldment is enclosed within single induction coil, weldedly treat to be furnished with between weldment solder, due to the liquid-solid phase line temperature of the unlike material difference that differs greatly, the difference of phase transition temperature, the solid solubility of foreign material is little, linear expansion coefficient, the difference of thermal conductivity, conventional solder flux, the spreadability of solder, wettability, diffusivity, trickling property, intergranular permeability, the meshing property of machinery, intermediate alloy, the deterioration that becomes of these performances of the vapo(u)rability of element and scaling loss, the larger internal stress of generation of soldering interface causes Interface Crack, another produces larger fragility phase intermetallic compound or fragility phase gap, causing soldering strength significantly reduces, particularly run into electric conductivity height and the low requirement of temperature rise that low-voltage electrical apparatus requirement is welded to connect part, for example, apply high phosphorus copper powder solder, just do not reach requirement, even if form brazed seam, intensity is also very fragile, another is exactly that these electric conductors are due to welding under field conditions (factors), electric conductor copper silver part sensing capability is poor, and the little heating of absorbed power that high electric conductor belongs to the too high poor generation of induction coupling ability of high heat conductive body, joint face is difficult for, the equipment of same power connects iron steel part and can, weld same copper silver part and just occur difficult, because welding under field conditions (factors) makes coating material, for example silver-plated, copper facing or fine copper, fine silver surface produce very serious oxide layer to electric conductor, or many materials that contain carbon for example silver-colored graphite contact, polycrystalline diamond (PCD) are being oxidized and graphitizations 800 ℃ of above generations respectively very soon, rear operation need increase the operation of removing oxide layer surface, material itself is caused to waste, and cost is high, another increases in when welding throw in such as the device of the protection gas of nitrogen, argon gas, hydrogen, helium etc. or adopt a plurality of vacuum high-frequency induction brazing processes, complex process, low to apparatus and process is had relatively high expectations, the change conference of the fit-up gap of part causes soldering strength significantly decay, welding efficiency, another one is exactly to adopt a siphunculus to make an induction coil of vertical direction multilayer, directly to heating welding such as iron copper part, copper silver part, copper part, silver-colored part, copper facing, silver plates, coating and material self surface is by severe oxidation and destruction, product will obtain use, need pickling and coating processing again, after some oxidation, be difficult to process, increased product cost.
In addition, the selection of soldering processes also has a principle, be exactly that brazing temperature must not be higher than the phase transition temperature of the B phase of materials to be welded, to avoid because of the damage of welding process to soldered material self performance, this is technological difficulties of solder bonding metal, is also difficult point of technology of dissimilar metal high-frequency induction brazing.
In induction welding technique, the thermal source that normally used toroidal inductor produces in high frequency induction current is also annular, central hot current density is minimum, by center, along with increasing heat flow density, radius also increased gradually, when being increased to maximum, after maintaining a segment distance, start decay, and at the edge of annulus, occur on the contrary a relatively high heat flow density district, radially occurring the little crest of a capable heat flow density of triangle.
Another technological difficulties of dissimilar metal high-frequency induction brazing are: selecting high-frequency heating to reduce the heat time, in the process of raising the efficiency, the brazing process of heating rapidly can cause soldering interface reaction too violent, the same intermetallic compound that easily produces in interface is caught molten condition solder, reduces the wettability of solder.
Current high-frequency induction brazing adopts water-cooling process rapidly, and process of setting gradient is bigger than normal, destroys material solidification characteristic primary crystal and forms insufficiently, produces coagulation defect, makes the soldering interface stability decreases in process under arms.
Existing high-frequency induction brazing, is collection skin and the contiguous principle of utilizing electric current, and brazed seam and solder rely on the faradic resistance heat in high-frequency alternating magnetic field to realize, and frequency is directly proportional to induced-current, is inversely proportional to electric current length of penetration; Electric current length of penetration is directly proportional to the square root of the resistivity of conductor, is inversely proportional to the square root of frequency and magnetic conductivity; Alternative frequency is higher, speed of welding is higher, and the skin effect of electric current is strengthened, and common 85% current strength is distributed in conductor skin depth, make electric current length of penetration less, the thickness of heating is just thinner, and the thickness that soldering is not more than 5mm obtains general, and thick of soldering can only be leaned on reduction frequency, by surface heat, to nexine heat by conduction, realized, so just there will be surface heat not arrive nexine solder joint, the too early melt flow of solder loses, thereby thick of soldering is just restricted greatly.
Summary of the invention
The high-frequency induction brazing welding method that the object of this invention is to provide a kind of metallic element, the easy reduction sealing, reduction weld strength and the electric conductivity that in prior art, exist have been solved, absorb the problem of adsorbing moisture, causing weld corrosion, provide simultaneously and determined fast the method for selecting welding procedure and the equipment of selection, realized and once weld many products or product simultaneously and carry out a plurality of solder joints and weld simultaneously.
Another object of the present invention is, the welder that provides the high-frequency induction brazing welding method of above-mentioned metallic element to use.
The technical solution adopted in the present invention is, a kind of high-frequency induction brazing welding method of metallic element, can once complete the high frequency brazing assembling moulding of the many solder joints of many weldments, the method relies on a kind of device, the structure of this device comprises high frequency coil and magnetic rings depression bar two parts, this high frequency coil and magnetic rings depression bar two parts are all connected with high frequency controller, accept the unified of high frequency controller and control
The structure of high frequency coil is, the copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings, the high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and after last high frequency coil of always flowing through, backwater forms cooling circuit;
The structure of magnetic rings depression bar part is, above each high frequency coil axle center, correspondence is provided with magnetic rings respectively, each magnetic rings respectively potsherd by is separately arranged on copper tube lower end separately, on every copper tube of potsherd, be communicated with respectively water inlet pipe, the upper end of each copper tube is connected with slide bar by adjusting lever, and slide bar is upwards connected with cylinder; Cylinder is connected with PLC, and the control of accepting PLC moves up and down,
The inventive method is utilized above-mentioned device, according to following steps, implements:
Step 1, treat the processing on weldment surface: degrease, remove excessive oxide skin;
The assembling of step 2, welder, arrange high frequency coil and magnetic head depression bar:
Make arranging of high frequency coil satisfied: a plurality of high frequency coils that diameter is parallel or equidistant with the heating surface for the treatment of weldment with the copper pipe for the treatment of that weldment heating part matches, high frequency coil induction position, current direction is consistent, vertical direction at least 1 is enclosed between adjacent turn;
In addition, the magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of high frequency coils top of along continuous straight runs series connection coiling, the axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils, the weldment for the treatment of of prepackage is placed in fixture, each coil coil is adjusted to and weld parts position equal-height position;
Be equipped with paste brazing flux FB303P simultaneously;
Insulation Current calculation is pressed: insulation electric current=welding current/(1.3-1.56) A,
Temperature retention time is calculated and is pressed: temperature retention time=weld interval * (1.5-5);
Step 6, the technological parameter providing according to above-mentioned steps, will treat that weldment is placed in high frequency coil, will treat that weldment puts into fixture and push down with magnetic head depression bar, and high frequency coil is heated, and after insulation, power-off passes to cooling water and carries out cool to room temperature.
Another technical scheme of the present invention is, a high-frequency induction brazing welder for metallic element, comprises high frequency coil and magnetic rings depression bar two parts, and this high frequency coil and magnetic rings depression bar two parts are all connected with high frequency controller, accepting the unified of high frequency controller controls
The structure of high frequency coil is, the copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings, the high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and after last high frequency coil of always flowing through, backwater forms cooling circuit;
The structure of magnetic rings depression bar part is, above each high frequency coil axle center, correspondence is provided with magnetic rings respectively, each magnetic rings respectively potsherd by is separately arranged on copper tube lower end separately, on every copper tube of potsherd, be communicated with respectively water inlet pipe, the upper end of each copper tube is connected with slide bar by adjusting lever, and slide bar is upwards connected with cylinder; Cylinder is connected with PLC, and the control of accepting PLC moves up and down.
The invention has the beneficial effects as follows: use high frequency coil and magnetic head depression bar, between weldment contact-making surface, select solder, brazing flux, weldment surface coated with flux, according to high frequency electric source, determine welding condition respectively, control magnetic circuit infiltration routes and density, make welding current be insulation electric current 1.3-1.56 doubly, temperature retention time is 1.5-5 times of weld interval, and on welding high frequency controller, continuous control is set, by fixture and the clamping of magnetic rings depression bar, once complete the high-frequency induction brazing assembling moulding of the many solder joints of many weldments, step is scientific and reasonable, obvious technical effects, specifically comprise following some:
1) by the setting of the diameter of high frequency coil (copper pipe of interior copper cooling water), internal diameter, the number of turn, the number of turns and device current, frequency, power and treat that mating of energy between weldment is suitable.
2) between welding-resistant metal especially of the same race, between different-thickness or dissimilar metal sheet, wire rod, overcome common high frequency brazing solder technology and can produce the bad problem of leakiness weld seam, as the phenomenon of mother metal autoclasis, corrosion, field trash (black burning oxide), fusion not enough (cracking), edge fusion is not enough, middle part fusion is not enough (middle part cold welding), weldbonding (cold welding), cast welding (fragility weldering), pore (pin hole), sealing, weld strength and the electric conductivity of raising welded part, prevented weld corrosion.
3) realize a welding fabrication that once welds different parts on a plurality of parts or a plurality of part, meet and enhance production capacities, reduce equipment investment, stop heating product surface or coating are destroyed, make product have to increase new surface treatment procedure; According to formula and welding range of choice, select fast welding equipment and welding procedure, many-side reduces costs simultaneously, and welding efficiency is improved more than 10 times, shortens 5 times weld interval; Save electric energy, environmental protection.
4) magnetic rings depression bar is as induction reactance, improved welded part sensing capability, improved copper silver coupling effect, in the short time, increased the absorption thermal power of welded part, improved welding efficiency; Changed position and the scope of high frequency electric glide path, high frequency electric density more concentrates on the center, top layer for the treatment of weldment, makes central hot current density become maximum by minimum; By center, along with radius increase heat flow density also increases gradually, becoming ，You center also reduces gradually along with radius increases heat flow density.Such benefit is: or else thick of soldering reduces frequency, passes to heat make the solder of brazed seam melt and be achieved at first by surface heat to nexine, has improved the soldering thickness of brazing member; The outer peripheral solder of weldment finally melts, and eliminates the too early melt flow of solder simultaneously and loses phenomenon, makes the corrosion of weld seam nexine, slag inclusion extrude nexine to outside under the pressure of magnetic depression bar, under the washing away of water, peels off; Weld seam periphery forms mellow and full fillet and fine and close weld seam; Weld strength is high.
5) by the best configuration of solder and brazing flux position; Brazing flux guarantees to fill up joint gap completely after solder fusing, makes liquid brazing flux become line trend with solder, has guaranteed spreadability and the brazed seam of solder.
6) heat fast, diathermanous glossiness good, surface without burn, oxide layer is few, energy-conservation, welding smoothness is even, welding good evenness, adhesive force is good, heat treatment deformation is little; Can heat the complex-shaped weldment for the treatment of; Operating environment is good, easy to operate, easy control of temperature, and good product quality, protects for coating material and surface, welded part surface.
Accompanying drawing explanation
Fig. 1 is the high-frequency coil structure schematic diagram that the inventive method is used;
Fig. 2 be the inventive method use with the supporting magnetic rings depression bar schematic diagram of high frequency coil;
Fig. 3 is that the inventive method embodiment two silver points touch bridge assembly welding structural representation;
Fig. 4 is the structural representation of two silver points of contact bridge welding of Fig. 3 embodiment;
Fig. 5 is the Single Ag contact of four U-shaped contact bridges in the inventive method embodiment and the mounting structure schematic diagram of a welding fabrication of contact plate;
Fig. 6 is the mounting structure schematic diagram of the double end silver contact in two U-shaped contact bridges and a welding fabrication of contact plate in the inventive method embodiment.
In figure, 1. high frequency coil a, 2. high frequency coil b, 3. magnetic rings a, 4. magnetic rings b, 5. screw, 6. potsherd, 7. return pipe, 8. water inlet pipe a, 9. water inlet pipe b, 10. adjusting lever, 11. slide bars, 12. cylinders, 13. contact bridges, 14. silver contacts, 15.U type contact bridge, 16. support members, 17. conducting strips, 18. high frequency coil d, 19. high frequency coil e, 20. high frequency coil f, 21. silver contact a, 22. silver contact b, 23. silver contact c, 24. silver contact d, 25.U type contact bridge a, 26.U type contact bridge b, 27.U type contact bridge c, 28.U type contact bridge d, 29. support member a, 30. support member b, 31. support member c, 32. support member d, 33. high frequency coil c, 34.U type contact bridge e, 35.U type contact bridge f.
The specific embodiment
High-frequency welding is exactly to have utilized kelvin effect to make the concentration of energy of high frequency electric on the surface for the treatment of weldment; And utilize kindred effect to control position and the scope of high frequency electric glide path; Kindred effect is the effect due to induction reactance in essence, induction reactance plays a part leading in high frequency electric, kindred effect is along with the spacing of increase frequency and adjacent conductor becomes near and increases, if add a magnetic core around at proximity conductor, high frequency electric will more concentrate on the top layer for the treatment of weldment so.
With reference to Fig. 1, Fig. 2, the present invention is a kind of high-frequency induction brazing welding method of metallic element, a kind of welder structure relying on is, comprise high frequency coil and magnetic rings depression bar two parts, this high frequency coil and magnetic rings depression bar two parts are all connected with high frequency controller, accepting the unified of high frequency controller controls, the high frequency coil a1 and the high frequency coil b2 that in Fig. 1 embodiment, have only shown horizontal series, Fig. 2 has shown two corresponding magnetic rings, all shows 4 high frequency coils of horizontal series in Fig. 5, Fig. 6 embodiment.
The structure of high frequency coil is, the copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings, the high frequency coil head and the tail of each opening connect successively, cooling water is from the water inlet of (first) high frequency coil a1 one end, and after (last) high frequency coil b2 that always flows through, backwater forms cooling circuit; High frequency coil quantity is at least 2, or more than 2;
The structure of magnetic rings depression bar part is, above high frequency coil a1 and high frequency coil b2 axle center, correspondence is provided with magnetic rings a3 and magnetic rings b4 respectively, magnetic rings a3 and magnetic rings b4 respectively potsherd 6 and the screw 5 by are separately arranged on two copper tube lower ends, the material of potsherd 6 is resistant to elevated temperatures insulating materials, on two copper tubes, be communicated with respectively water inlet pipe a8 and water inlet pipe b9, between two copper tubes, be communicated with return pipe 7, the upper end of copper tube is connected with slide bar 11 by adjusting lever 10, and slide bar 11 is upwards connected with cylinder 12; Cylinder 12 is connected with PLC, and the control of accepting PLC moves up and down.
The high-frequency induction brazing welding method of metallic element of the present invention is, the copper pipe of a water flowing (or excellent part or plate) along continuous straight runs coiling (processing) is become to a plurality of diameters and treat that copper pipe that weldment heating part matches, high frequency coil induction position is parallel or equidistant with the heating surface for the treatment of weldment, current direction is consistent, vertical direction at least 1 is enclosed between adjacent turn a plurality of high frequency coils; The magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of coils top of along continuous straight runs series connection coiling, the axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils, the part of prepackage is placed in fixture, each coil is adjusted to and weld parts position equal-height position, set solder and brazing flux, by magnetic rings depression bar push down respectively downwards part contact firm after, control high-frequency welding electric current and weld interval, and control preheat curent and preheating time, the multiple welding that realizes multiple operation multiple spot is in the moulding that is welded of an operation.
High frequency coil can select copper rod, copper sheet, copper pipe to make.High frequency coil adopts in pipe water flowing and at postwelding water cooling mode.
The head of high frequency coil is selected the annealing copper tube of the diameter 3-7mm of 1mm wall thickness, or selects wall thickness to be not less than 1mm, the annealing copper tube of diameter 5-10mm.Initiating terminal and clearing end at annealing copper tube are connected with two exits, and the copper pipe external diameter of two exits is 1.2 times that 5-15mm, length are not less than high frequency coil diameter, and two exit copper pipes are connected with equipment induction generator water inlet pipe and water outlet pipe.
The diameter of high frequency coil is larger, and the number of turn of high frequency coil is fewer;
Need the power of welding larger, the number of turn of high frequency coil is fewer;
Thermal conductivity or electric conductivity are better, and the number of turn of high frequency coil is more;
Power is larger, and the frequency of high frequency coil is larger;
Bonding power is larger, and the high frequency coil quantity that level is moved towards series connection is just more.
Table 1: the corresponding relation that is high frequency coil internal diameter and the heating target material selection number of turn
According to welded part and high frequency coil, keep being less than the principle in the gap of 0.2 times of welded part area, select suitable high frequency coil internal diameter numerical value.
Connecting end surface area between welding current=sheet material current density * weldment, the unit of sheet material current density is wherein A/cm
2, between weldment, connecting end surface square measure is cm
2.
Welding depression bar pressure=cylinder piston area * 0.785 * pressure (kg/cm
2), cylinder piston square measure is wherein cm
2.
Table 2: the matching list of the size of high frequency coil and the number of turn and the former limit of the extension set high frequency transformer number of turn
Silver-base solder is selected: Ag-Cu system comprises one of Ag-Cu-Li, Ag-Cu-Ni, Ag-Cu-Zn (as Ag-Cu-Zn-Sn, Ag-Cu-Zn-Gd, Ag-Cu-Zn-Ni, Ag-Cu-Zn-In, BAg30CuZn); Solder thickness 0.03-0.7mm.
Copper-phosphorus brazing alloy system selects: one of BCu92PAg (Ag2), BCu91PAg (Ag2), BCu89PAg (Ag5), BCu88PAg (Ag5), BCu87PAg (Ag6), BCu80PAg (Ag15), BCu76PAg (Ag17.6), BCu75PAg (Ag18), BCu80SnPAg (Ag5); Solder thickness 0.03-0.85mm.
Table 3: equipment input power, output welding current and tolerance frequency matching list
Continued 3
For arranging of part High-frequency machine industry power supply enterprise: the electric current of the actual output of power supply is very little, but for the consideration in user's uses, in power supply demonstration, be conventionally multiplied by multiple.Conventionally be multiplied by 20 times, sensuously electric current is very large.Therefore, in the show value of output current * 20 of table 3 times, specific embodiment, be not multiplied by 20 times, both are consistent in the required power supply actual output current of welding.
According to the difference of weldment, the computing formula of welding required theoretical power (horse-power) is:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds), that is:
According to the difference of weldment, the computing formula of welding required actual power is:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds)/(1-k), that is:
Wherein, copper part thermal loss coefficient k is got 0.30-0.35; Silver part thermal loss coefficient k is got 0.35-0.40; Steel and iron parts thermal loss coefficient k is got 0.28-0.32.
In sum, the high-frequency induction brazing welding method of metallic element of the present invention, according to following steps, implement:
Step 1, treat weldment surface treatment: comprise and degreasing, remove excessive oxide skin, determine need to carry out coating surface treat that weldment coating layer is qualified, coating is selected silver, copper, nickel, molybdenum, niobium or aluminium silicon etc.;
Step 2, assembling: on equipment, arrange high frequency coil and magnetic head depression bar, the diameter of magnetic rings (such as the magnetic rings a3 in Fig. 2 and magnetic rings b4) according to:
determine;
Welding current=(1061.4 * weldment weight/1.68 * time)
1/2=(631.54 * weldment weight/time)
1/2, current unit is A, weldment unit of weight ShiKg， chronomere is second,
Insulation electric current=welding current/(1.3-1.56) A,
Temperature retention time=weld interval * (1.5-5 doubly);
Step 6, the technological parameter providing according to front several steps, will treat that weldment is placed in high frequency coil, will treat that weldment puts into fixture and push down with magnetic head depression bar, and high frequency coil is heated, and after insulation, power-off passes to cooling water and carries out cool to room temperature;
Step 7, brazed seam or the whole conservation treatment for the treatment of weldment postwelding: clean brazing flux residue, plate other inert metal protective layer, oxidation or Passivation Treatment, spray paint etc.
Embodiment 1
High-frequency ac welding between dissimilar metal different-thickness:
As Fig. 4, first weldment in embodiment 1 is a U-shaped contact bridge 15, is iron copper plating groove; Second weldment is welded with 17, the three weldments of conducting strip in the middle of being be that two ends, iron copper plating groove surface are respectively welded with a silver contact 14;
First be selection equipment:
Select plant capacity, theoretical power (horse-power) is wherein:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds),
Iron copper plating groove weight 0.033Kg, two silver contact 0.011Kg, conductive plate weight 0.021Kg, silver-bearing copper group welding piece gross weight are 0.065Kg; Silver Ag specific heat capacity 234J/kg; Copper Cu specific heat capacity 390J/kg; Brazing temperature is selected 770-900 ℃, brings above parameter into formula and calculates:
The theoretical power (horse-power) of silver-bearing copper group welding piece is 6.8-7.97KW,
Consider air, water-cooled and treat the heat radiation of weldment, the 30%-35% that is theoretical power (horse-power) to the loss of power, the=9.71-12.26 (KW) of silver-bearing copper group welding piece actual power=(6.8-7.97)/(1-(30%-35%)).
Select the Suppression of High-frequency Welding Devices of 40KVA, input voltage 380V-420V; Output current 180-2000A; Tolerance frequency 45-200KHz; The interval 80-160KHz of frequency of optimum traffic; Heat time 1-99s, temperature retention time 1-99s; The requirement of input power cable; 16mm
2copper cash; Input power switch 3 * 125A; Equipment ground line is 6mm
2annealed copper wire; Equipment water inlet pipe internal diameter 25mm, outlet pipe internal diameter 13mm, water-connecting valve water pipe internal diameter 25mm, cooling water pressure > 0.2MPa; Flow > 20L/Min, 1 of main frame water inlet, 3 of delivery ports; 2 of extension set water inlets, 3 of delivery ports; Self be with epoxy resin casting full water cooling transformer, radio-frequency generator main frame and extension set interconnection; Temperature high frequency controller, induction coil device are contained in extension set, by solid-state circuit program weldering control system, are powered, adopt brazing flux and solder, set up what a ratio-frequency welding program and make its welding acceptance test standard: ultrasonic thin detection ratio of brazing area > 70%, shearing force > 700-2000N{ is contact plate (bridge) for low-voltage electrical apparatus } or the desired minimum of contact material resistance welded file.
Next is as follows to the specific descriptions of three kinds of parts in embodiment 1:
First weldment is the U-shaped contact bridge 15 of the low-voltage electrical apparatus contactor after cold rolling, with 1.2mm cold-rolled steel sheet Q235-A-F punch forming 39.5mm * 11.5mm * 4.8mm, the arc angle of contact bridge two-end-point throat thickness 2mm, cold-rolled steel sheet Q235-A-F punch forming; Spot-welded on moulding contact bridge grooved: contact bridge channel material is through deoiling, clean copper facing 0.6um; Punch forming 11.5mm * 5m circular arc sample, cross section is that 11.5 * 2mm, 11.5 * 2mm are means of spot welds junction.
Second weldment is conducting strip 17 copper plates of the T3Y2 material thickness 1.5mm that uses of contact bridge grooved, punch forming 34.5mm * 9.0mm.And require before being equipped with welding: cleaning treatment, coated with flux FB303P; At solder sheet 34.5mm * 9.0mm * 0.15mm.
The 3rd weldment is that material therefor is the low-voltage electrical apparatus contactor silver contact 14 after cold rolling, and material adopts silver alloy Ag-SnO
2 (9)-In
2o
3 (4), solder side covers that layer is not less than 0.16, thickness 2.5mm, tablet cold stamping is cut into the rectangular specimen of 11mm * 8mm * 2.5mm, and using the face of cross section 11mm * 8mm as solder side, this face requires before welding: cleaning treatment, coated with flux FB303P; At solder sheet 11mm * 8mm * 0.2mm.
(1) low-voltage electrical apparatus contactor silver contact 14 is groundwork faces, and heating needs protection, and therefore selects U-shaped contact bridge 15 as heating surface.
Heating high frequency coil and magnetic head depression bar used are set:
Arrange high frequency coil and magnetic head depression bar, magnetic head depression bar point diameter is
magnetic rings be contained in depression bar front end after, magnetic rings
High frequency coil is selected the annealing copper tube of wall thickness 1.5mm, diameter 7mm; By the copper pipe of a water flowing turn to that the high frequency coil (each opening is heating tool-high frequency coil) of 2 openings is parallel or equidistant with the heating surface for the treatment of weldment with the copper pipe that matches, responds to position for the treatment of weldment heating part, current direction is consistent between adjacent turn, 2 coil series connection of same plane coiling, the resistant to elevated temperatures insulating materials of coiling (silicone tube, glass tape) between adjacent turn; Two exit copper pipe external diameter 7mm, length are 39.5 * 1.2 times=47.4mm, two exit copper pipes are selected 50mm length, the following internal diameter of coil ￠ 50mm, select 2 circles, high frequency coil is arranged in magnetic rings depression bar vertical lower along horizontal series, adopts in pipe water flowing and in postwelding water cooling.
(2), according to the thermophysical property of silver contact 14, conducting strip 17, U-shaped contact bridge 15 (being three weldments of the present embodiment), select the principle of welding temperature, current time and pressure to be:
Current strength, the thermal conductivity of the electric current length of penetration determining according to high frequency electric characteristic, selection frequency, correspondence, select the welding current pulse duration, and elevated temperature strength selection pressure is also with reference to pre-Anti-cracking and heat sensitivity etc. are revised.
Brazing flux welding temperature is chosen as solder lower than 50 ℃-120 ℃; Silver contact 14,, 770 ℃-900 ℃ of the best brazing temperatures of conducting strip 17; Consider spreadability and the brazed seam of solder, select solder brazing to connect, brazing flux is selected FB303P, 850 ℃ ± 50 ℃ of heating-up temperatures, and solder, according to electric conductivity and the requirement of product electric life, selects argentiferous at more than 20% silver-base solder, 800 ℃-970 ℃ of money base brazing temperatures; Select Ag-Cu-Zn (BAg25CuZn), 700 ℃ of solidus temperatures, 800 ℃ of liquidus temperatures, solder BAg25CuZn specification is 34.5mm * 9mm * 0.15mm.
(3) to high frequency controller, frequency of optimum traffic, output welding current, weld interval are set
Welding frequency is selected 160KHz, according to ratio of brazing area, is greater than 70% and good brazed seam and outward appearance fillet, selects weld interval and electric current;
Insulation electric current=welding current/(1.3-1.56);
Temperature retention time=weld interval * (1.5-5) doubly;
The thickness of silver contact 14, conducting strip 17, U-shaped contact bridge 15 and the above formula of specification substitution are calculated to high-frequency induction welding technique condition; In addition, high frequency coil is made into corresponding and product maintenance 1-2mm gap, the identical coil of shape.
A contact bridge contact silver-bearing copper group welding piece gross weight 0.065Kg; Heat time is controlled at 23-35s;
Select 10 seconds weld interval, temperature retention time=weld interval * (1.5) doubly=15 seconds;
Welding current=40A;
Insulation electric current=welding current/1.3=40/1.3=31 (A);
Be more than HFI welding power demand and the welding parameter of Practical Calculation, it is generally as follows that comprehensive above technical scheme obtains welding procedure used:
Actual silver-bearing copper group welding piece power 9.71KW-12.26KW; Welding frequency 160KHz;
Select welding current 40A, weld interval 10s, insulation electric current 31A, temperature retention time 15s,
Magnetic rings
depression bar closing speed is 30-40mm/s; Welding load is 1.5Kg; Magnetic head depression bar point diameter is
ratio of brazing area test is 85%-100%; Clip and paste power test for 950-2200N; Speed of welding for the highest 4 solder joints/minute; (silver contact 14, conducting strip 17, U-shaped contact bridge 15) silver-bearing copper group welding piece feed is manual mode.
Welding operation process describes in detail:
In conjunction with Fig. 1, the present embodiment welding operation process is: above welding procedure is inputted respectively in weldering control device and in PLC high frequency controller (program setting), welding current and weld interval are controlled by welding control device, and welding current is provided by transformer, by high frequency coil, responds to output; Pressure setting is set by adjuster and pressure regulator valve, and cooling water provides air pressure, and solder flux FB303P cream is coated on and will welds each part; Give in U-shaped contact bridge 15 grooveds of low-voltage electrical apparatus contactor and place silver-base solder sheet BAg25CuZn; After conducting strip 17 is placed on silver-base solder sheet, put on the fixture of equipment assigned address, above contact bridge grooved, first place silver-base solder sheet Bag30CuZn for two sections, then on silver-base solder sheet, place silver contact 14.Repeat equally this action, another is organized to the assigned address that each soldering part and solder brazing flux are placed on another fixture.
With reference to Fig. 3, Fig. 4, by the 13 HFI welding moulding of a contact bridge, brazing flux FB303P is coated on to U-shaped contact bridge 15 and conducting strip 17, conducting strip 17 is placed in equipment support members 16, on conducting strip 17, place BAg25CuZn silver soldering sheet, U-shaped contact bridge 15 is pressed on conducting strip 17, at U-shaped contact bridge 15 two ends, places BAg25CuZn silver soldering sheet again, two silver contacts 14 are pressed on BAg25CuZn silver soldering sheet, then brazing flux FB303P is coated on two silver contacts 14.(correspond to this section of description, Fig. 3 is welding figure; Fig. 4 is the schematic diagram at the lid two ends of two silver contacts 14 U-shaped contact bridge 15 of being contained in a grooved; The part drawing of a conducting strip 17 is housed) in the middle of U-shaped contact bridge 15 grooves of grooved
Press device start button, PLC controls magnetic valve action, the break-make of magnetic valve is controlled the cylinder action of each point, cylinder drives two groups of high frequency coils and magnetic depression bar to move, around or above (upper weldment is around single-piece is placed on after high frequency coil a1 and high frequency coil b2 water flowing, to be enclosed within faying face, above large part or many colleague's welderings are placed on), cylinder 12 with moving slide-bar 11 by the magnetic rings a3 on two copper tubes, magnetic rings b4 and potsherd 6 are depressed, by contact bridge groove, conducting strip, after silver contact compresses, water inlet pipe a8 and water inlet pipe b9 water flowing respectively, transformer provides electric current under the instruction of PLC program, weldment produces induced-current at high frequency coil, in the magnetic field of the alternation of faying face to be welded in high frequency 160KHz, produce the flow through resistance heating at surface to be welded place of eddy current, first will be before solder fusing, brazing flux FB303P first melts, remove welded part surface oxide layer, then silver-base solder sheet Bag30CuZn fusing is sprawled rapidly the bottom of sprawling with moistening formation faying face along joint 0.1-0.2mm gap orthoscopic, welding current completes after fusing, by insulation electric current, continue heating and insulation, the fusing soldering of faying face is sprawled to bottom uniformly penetrating in conductive plate, contact, contact bridge groove soldering surface layer, under the pressure and rotation magnetic force of the oxide layer melting at brazing flux at magnetic depression bar, and eliminating joint outside under the extruding of the solder of trickling, Deng solder, form after round and smooth fillet, at this moment welding insulation electric current and pressure treat that to welded weldment applies welding process by magnetic depression bar, welding completes, the logical cooling water of power-off, by weldment and coil cool to room temperature, obtains required secure seal weld seam.
Welding result check checking:
Welding result is made to Ultrasonic Examination, examination and test of products ratio of brazing area after welding reaches 85%-100%, the power of cliping and pasting is set to respectively 1900N, 1800N, 2200N, 2100N, 1900N, 1850N, 2000N, 1950N, by difference being cliped and pasted to force retaining 10s, all there is not obscission in each weldment.
Destructiveness is peeled off; Welding base metal fracture and seriously curling, all there is not weld layer firmness obscission in each weldment.
Check through 100,000 products all conforms to quality requirements, and has eliminated leakiness weld seam bad phenomenon, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion, and weld is accepted rate keeps 100%, and welding efficiency improves 180%.Iron copper plate and silver contact, contact bridge, electric-conductor surface are protected well in welding process, and good surface is provided for postorder operation is silver-plated.
Embodiment 2
Welding (silver brazing of copper iron connects) between dissimilar metal different-thickness:
Processing object is a production A.C. contactor company contact assembly, is an iron copper plating groove, and centre is welded with conductive plate, two ends, iron copper plating groove surface are respectively welded with a silver contact.
According to the model-composing of embodiment 1, the contact bridge of following A.C. contactor and contact-welding technology and high-frequency induction brazing being connect to fruit adds up: by iron copper plating groove different-thickness and specification, silver contact, the above formula calculating of conductive plate substitution high-frequency induction welding technique parameter; In addition, copper pipe is bent into a plurality of high frequency coils corresponding and that product keeps 1-2mm gap, shape to coincide.
Table 4: be high-frequency induction brazing basic technology parameter comparison (A.C. contactor contact bridge)
Table 5: typical high-frequency induction brazing basic technology parameter comparison (A.C. contactor contact bridge)
Table 6: typical high-frequency induction brazing soldering result contrast (A.C. contactor contact bridge)-weld is accepted rate brings up to 100%
Table 7: typical high-frequency induction brazing soldering result contrast (A.C. contactor contact bridge)-weld is accepted rate brings up to 100%
Specification 1 all conforms to quality requirements through the check of 300,000 products, has eliminated leakiness weld seam bad, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion.Weld is accepted rate keeps 100%, and welding efficiency improves 160%.
Specification 2 all conforms to quality requirements through the check of 260,000 products, has eliminated leakiness weld seam bad, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion.Weld is accepted rate keeps 100%, and welding efficiency improves 130%.
Ac contactor contact high frequency brazing
According to the above model of embodiment 1, the contact bridge of following A.C. contactor and contact being carried out to welding procedure and high-frequency induction brazing connects fruit and adds up:
Specification 3:
U-shaped contact bridge: silver contact 18mm * 13mm * 1.7mm;
T3, Y4 contact plate 18mm * 55mm * 18mm * 5;
Solder Bag30CuZn sheet: 0.2mm * 13mm * 18mm * R15,
Brazing flux FB303P cream dress, before welding, all apply;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.098kg;
Theoretical power demand: 8.1746-9.555KW; Actual power demand: 12.56-14.7KW,
Welding current 47-50A; Weld interval 18-23s; Insulation electric current 38-41A; Temperature retention time 50-60s;
Specification 4:
U-shaped contact bridge: silver contact 22mm * 17mm * 2.5mm;
T3, Y4 contact plate 18mm * 55mm * 23.5mm * 5;
Solder Bag30CuZn sheet: 0.2mm * 22mm * 17mm * R32; Brazing flux FB303P cream dress, before welding, all apply;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.107kg;
Theoretical power demand: 8.9-10.43KW; Actual power demand: 13.69-16KW;
Welding current 50-55A; Weld interval 24-27s; Insulation electric current 38-42A; Temperature retention time 96-100s;
The breaker of plastic casing high frequency brazing of silver-bearing copper welding
According to the above model of example 1, the contact bridge of following A.C. contactor and contact being carried out to welding procedure and high-frequency induction brazing connects fruit and adds up:
With reference to Fig. 5, once simultaneously by 4 Product jointing moulding, by four U-shaped contact bridges (U-shaped contact bridge a25, U-shaped contact bridge b26, U-shaped contact bridge c27, U-shaped contact bridge d28) HFI welding moulding, is specifically coated on brazing flux FB303P these four U-shaped contact bridges and four corresponding silver contact (silver contact a21, silver contact b22, silver contact c23, silver contact d24) above, these four U-shaped contact bridges are placed on successively to support member (the support member a 29 of four corresponding devices, support member b 30, support member c 31, support member d 32) upper, on these four U-shaped contact bridges, place respectively BAg25CuZn silver soldering sheet, then four above-mentioned silver contacts are pressed in respectively on four silver soldering sheets, with four above-mentioned high frequency coil (high frequency coil c17, high frequency coil d18, high frequency coil e19, high frequency coil f20) in horizontal direction, four magnetic rings depression bars of supporting layout, under cylinder action, move to silver contact weld and four magnetic rings depression bars are pressed on corresponding silver contact, realize a welding fabrication of 4 products under high frequency electric effect.
Specification 5:U type contact bridge: silver contact 6mm * 3.5mm * 2.5mm;
T3, Y4 contact plate specification 8mm * 44mm * 3mm;
Solder Bag30CuZn sheet: 0.2mm * 6mm * 2.5mm * R10; Brazing flux FB303P cream dress, before welding, all apply;
Magnetic rings diameter:
pressure: 0.2Mpa; Series connection high frequency coil:
Silver contact and contact plate assembly welding weight: 0.025kg;
Theoretical power demand: 2.08-2.44KW; Actual power demand: 3.2-3.75KW;
Welding current 35-37A; Weld interval 7-9s; Insulation electric current 33-36A; Temperature retention time 16-18s;
With reference to Fig. 6, specification 6, once simultaneously by two groups of U-shaped contact bridges (U-shaped contact bridge e 34, U-shaped contact bridge f 35) HFI welding moulding, the process of specification 6 is with embodiment 4 specifications 5, or four high frequency coils (33,18,19,20), the specification that is not both two U-shaped contact bridges (U-shaped contact bridge e 34, U-shaped contact bridge f 35) is 8mm * 88mm * 3mm, single length 88 is 2 times in Fig. 5 embodiment, but quantity is half in Fig. 5 embodiment, identical with Fig. 5 embodiment of gross weight, its heating process is slightly different.Welding current 32-35A is set in addition; Weld interval 6-8s; Insulation electric current 32-35A; Temperature retention time 20-30s.
Specification 6 all conforms to quality requirements through the check of 280,000 products, has eliminated leakiness weld seam bad, improves sealing, weld strength and the electric conductivity of welded part, has prevented weld corrosion, and weld is accepted rate keeps 100%, and welding efficiency improves 1050%.
The inventive method embodiment, has realized the welding of once welding a plurality of parts and a plurality of solder joints, meets and enhances production capacities.Reduce equipment investment, stop heating product surface or coating are destroyed, make product have to increase new surface treatment procedure.According to formula and welding range of choice, obtain fast welding condition, many-side reduces costs, and increases the performance of enterprises simultaneously.
Claims (5)
1. the high-frequency induction brazing welding method of a metallic element, can once complete the high frequency brazing assembling moulding of the many solder joints of many weldments, it is characterized in that, the method relies on a kind of device, the structure of this device comprises high frequency coil and magnetic rings depression bar two parts, this high frequency coil and magnetic rings depression bar two parts are all connected with high frequency controller, accept the unified of high frequency controller and control
The structure of high frequency coil is, the copper pipe along continuous straight runs of a water flowing is turned to the high frequency coil of a plurality of openings, the high frequency coil head and the tail of each opening connect successively, and cooling water is from first high frequency coil one end water inlet, and after last high frequency coil of always flowing through, backwater forms cooling circuit;
The structure of magnetic rings depression bar part is, above each high frequency coil axle center, correspondence is provided with magnetic rings respectively, each magnetic rings respectively potsherd by is separately arranged on copper tube lower end separately, on every copper tube of potsherd, be communicated with respectively water inlet pipe, the upper end of each copper tube is connected with slide bar (11) by adjusting lever (10), and slide bar (11) is upwards connected with cylinder (12); Cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down,
Described method is utilized above-mentioned device, according to following steps, implements:
Step 1, treat the processing on weldment surface: degrease, remove excessive oxide skin;
The assembling of step 2, welder, arrange high frequency coil and magnetic rings depression bar:
Make arranging of high frequency coil satisfied: a plurality of high frequency coils that diameter is parallel or equidistant with the heating surface for the treatment of weldment with the copper pipe for the treatment of that weldment heating part matches, high frequency coil induction position, current direction is consistent, vertical direction at least 1 is enclosed between adjacent turn;
In addition, the magnetic rings depression bar of a plurality of correspondences is arranged in a plurality of high frequency coils top of along continuous straight runs series connection coiling, the axis centre of each magnetic rings depression bar and the central vertical of corresponding a plurality of coils, the weldment for the treatment of of prepackage is placed in fixture, each coil is adjusted to and weld parts position equal-height position;
Step 3, according to electric conductivity, to require high, firmness to require high, selects silver-base solder to mate with welded part; Or, firmness not high according to electric conductivity requires high, select copper-phosphorus brazing alloy to mate with welded part;
Be equipped with paste brazing flux FB303P simultaneously;
Step 4, configuration solder and brazing flux position: at the face that is welded to connect, place the solder mating, on welded part surface, apply paste brazing flux FB303P;
Step 5, by high frequency controller, corresponding frequency of utilization is set, according to following formula, calculates, and export welding current, weld interval, insulation electric current and temperature retention time and control numerical value:
Welding current=
current unit is A, and unit of weight ShiKg， chronomere is second,
Insulation Current calculation is pressed: insulation electric current=welding current/(1.3-1.56) A,
Temperature retention time is calculated and is pressed: temperature retention time=weld interval * (1.5-5);
Step 6, the technological parameter providing according to above-mentioned steps, will treat that weldment is placed in high frequency coil, will treat that weldment puts into fixture and push down with magnetic rings depression bar, and high frequency coil is heated, and after insulation, power-off passes to cooling water and carries out cool to room temperature.
2. the high-frequency induction brazing welding method of metallic element according to claim 1, it is characterized in that: the structure of described high frequency coil is, the copper pipe along continuous straight runs of a water flowing is turned to high frequency coil a(1) and high frequency coil b(2), two high frequency coil head and the tail connect successively, cooling water is from high frequency coil a(1) one end water inlet, high frequency coil b(2 flows through always) rear backwater formation cooling circuit;
The structure of described magnetic rings depression bar part is, at high frequency coil a(1) and high frequency coil b(2) axle center top respectively correspondence be provided with magnetic rings a(3) and magnetic rings b(4), magnetic rings a(3) and magnetic rings b(4) respectively potsherd (6) and the screw (5) by be separately arranged on two copper tube lower ends, the material of potsherd (6) is resistant to elevated temperatures insulating materials, on two copper tubes, be communicated with respectively water inlet pipe a(8) and water inlet pipe b(9), between two copper tubes, be communicated with return pipe (7), the upper end of copper tube is connected with slide bar (11) by adjusting lever (10), slide bar (11) is upwards connected with cylinder (12), cylinder (12) is connected with PLC, and the control of accepting PLC moves up and down.
3. the high-frequency induction brazing welding method of metallic element according to claim 1 and 2, is characterized in that: the diameter of described high frequency coil is larger, and the number of turn is fewer;
Or, need the power of welding larger, the number of turn is fewer;
Or thermal conductivity or electric conductivity are better, the number of turn is more;
Or power is larger, frequency is larger;
Or bonding power is larger, the high frequency coil quantity that level is moved towards series connection is just more.
4. the high-frequency induction brazing welding method of metallic element according to claim 1 and 2, is characterized in that: the head of described high frequency coil is selected the annealing copper tube of the diameter 3-7mm that 1mm is thick;
Or the head of high frequency coil selects wall thickness to be not less than the annealing copper tube of the diameter 5-10mm of 1mm;
The resistant to elevated temperatures insulating materials of coiling between adjacent turn;
Two exit copper pipe external diameter 5-15mm, length are not less than 1.2 times of the diameters of coil.
5. the high-frequency induction brazing welding method of metallic element according to claim 1, is characterized in that: in described step 5, and weldment power demand definite,
According to product, select the required theoretical power (horse-power) of welding:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds), that is:
According to product, select the required actual power of welding:
Power (KW)=weldment weight (Kg) * temperature (℃) * specific heat capacity { J/ (kg) ℃ }/3600 (seconds)/(1-k), that is:
Wherein, k is thermal loss coefficient, and during copper part, k gets 0.30-0.35; During silver part, k gets 0.35-0.40; During steel and iron parts, k gets 0.28-0.32.
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Families Citing this family (24)
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086161C (en) * | 1999-01-30 | 2002-06-12 | 深圳市宝安联华实业有限公司 | High-frequency heating and pressurizing technology and equipment for soldering ring and planar parts made of different metals |
| CN201064847Y (en) * | 2007-08-07 | 2008-05-28 | 天津市机电工业控股集团公司 | Special-purpose high frequency induced brazing machine for heavy current electrode contactor bridge-shape contact |
| FR2934799B1 (en) * | 2008-08-08 | 2011-03-04 | Renault Sas | CONTROL METHOD AND DEVICE FOR TRANSPARENT INDUCTION BRAZING |
| US10543548B2 (en) * | 2009-04-16 | 2020-01-28 | Us Synthetic Corporation | Apparatuses and methods for induction heating |
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