CN102225434A - Method for preparing tungsten copper alloy wire materials by using hot-swage technology - Google Patents
Method for preparing tungsten copper alloy wire materials by using hot-swage technology Download PDFInfo
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- CN102225434A CN102225434A CN2011100926764A CN201110092676A CN102225434A CN 102225434 A CN102225434 A CN 102225434A CN 2011100926764 A CN2011100926764 A CN 2011100926764A CN 201110092676 A CN201110092676 A CN 201110092676A CN 102225434 A CN102225434 A CN 102225434A
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Abstract
The invention discloses a method for preparing tungsten copper alloy wire materials by using hot-swage technology, comprising the following steps: weighing copper powder, tungsten powder and weighing glycerol as additive by weight percentage, mechanically mixing the three ingredients; putting the mixed viscous fluid with a certain fluidity in a graphite die; pre-buring in a vacuum sintering furnace; sintering the infiltrated copper in the furnace under the protection of hydrogen or helium; finally processing by hot-swage and centerless grinding to obtain wire materials with a certain diameter and random lengths. The invention has the advantages of simple technology, convenient operation, low cost, and stable performace, high quality and high yield of the products, solves the problems of complicate technology and high cost of preparing slender tungsten copper material existed in the prior art, and can be widely used in material processing of electrode, LED lamp and plasma.
Description
Technical field
The invention belongs to new material manufacturing technology field, be specifically related to be used for a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material of electrode, LED lamp, plasma.
Background technology
Tungsten-copper alloy extensively is used as electrode material, Electronic Packaging and electrical contact material because of the performance of favorable conductive, heat conduction and arc resistant corrosion, as electrode the time, usually require diameter about 3mm, the longer the better for length, in the prior art, the preparation of tungsten copper alloy wire material generally is to adopt the mold pressing of isostatic cool pressing equipment to be pressed into the bar that is several times as much as requirement, and sinter molding is carried out machining more then, obtains needed alloy wire at last.Because tungsten-copper alloy is a kind of pseudo-alloy, add high rigidity, the high-melting-point of tungsten at present, make it be difficult to employing and be processed into a material or wire rod with the same drawing of dense material or forging, though machining can, but complex process, cost of manufacture are too high, and industrial being difficult to born.
At the processing method several commonly used of wire rod, as stretch, roller draws, rolling etc., the stress characteristic of their work in-processes.Stretch, roller draw be two to compression, to tension, favourable to plasticity preferred metal wire rod, and unfavorable to the low-plasticity nonferrous metal material, the latter adds and is prone to drawing crack or tensile phenomenon man-hour, causes to produce to interrupt even can't process; Rolling stress is three-dimensional compressive stress, to plasticity better or the inductile metal wire rod all favourable, but forming roll processing is expensive, milling train maintenance cost height.Suffered stress state was a three-dimensional compressive stress when employing was swaged, three-dimensional compressive stress can improve material plasticity, tension then makes plasticity reduce, and the processing of swaging has the multidirectional characteristics that forge with pulse that forge concurrently on technology, the processing capacity of each hammering is smaller, and turned blank all is subjected to being evenly distributed on the compression that makes progress in week at every turn, thus defectives such as the pore of elimination turned blank inside, cavity, broken thick crystal grain, the institutional framework of change material.And this has not only been avoided a large amount of wastes of material, when reducing the tungsten-copper alloy diameter, improves the density and the intensity of tungsten-copper alloy greatly, improves its electrical conductivity by the hole of eliminating in the tungsten-copper alloy simultaneously.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the object of the present invention is to provide a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material, solved the elongated class Tungsten-copper Composites of prior art for preparing complex process, the problem that cost of manufacture is high.
In order to achieve the above object, technical scheme of the present invention is achieved in that
A kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material may further comprise the steps:
Step 1, batching: take by weighing the copper powder of 10～50wt% and the tungsten powder of 50～90wt% earlier, the particle diameter of copper powder is 50～80 μ m, the particle diameter of tungsten powder is 4～6 μ m, adds the glycerine that accounts for copper powder and tungsten powder gross weight 10～15wt% again and does additive, and common Mixing Machine mixed 4～8 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is in the graphite jig die cavity of 10mm with the high speed of the 8～15m/s diameter of packing into;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1650 ℃～1850 ℃ of temperature are incubated 1.5～2.0 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5～10mm is placed in the graphite boat, on blank, place the copper billet of billet weight 20%, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the protective atmosphere sintering furnace of hydrogen or helium, gas flow is 2L/h then, 1300 ℃～1350 ℃ of control temperature are incubated 1.5～2.0 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 750～850 ℃, insulation 40～50min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching the required diameter requirement, turned blank is selected to carry out once or annealing in process repeatedly 700～800 ℃ of temperature;
Step 6, centerless grinding processing: the WCu alloy wire blank that obtains of will swaging carries out grinding on centerless grinding equipment, to guarantee size and surface quality requirement.
Hot-swage technology in the step 5 of the present invention, because final drive shaft rotates at a high speed, the processing capacity of each passage is finished by tens of even up to a hundred hammering, adopt the special-shaped forging die hammering of tens of pairs turned blank, the processing capacity of each hammering is no more than the variable quantity of radial direction, and turned blank all is subjected to being evenly distributed on the compression that makes progress in week at every turn, thereby eliminates pore, the cavity blemish of turned blank inside, broken thick crystal grain, the institutional framework of change material; In machining process, turned blank to be selected to carry out annealing in process, 700～800 ℃ of temperature are eliminated the machining stress that the blank process produces, and reduce manufacturing deficiency, improve lumber recovery.
Excellent effect of the present invention is to adopt this method, and easy to operate, whole preparation process is simple, and cost of manufacture reduces, and also has more advantage simultaneously: (1) silk material machining deformation amount is big, and the deformation extent of the technology of swaging is much larger than stretching and roller die drawing; (2) silk material distortion evenly, material internal is in 3 direction compressive stress states, circumferentially evenly compression can not form breach and crackle because of being out of shape the inhomogeneous material that causes, and silk material is also less is distorted; (3) required deformation force is little, instrument, die life height; (4) the required driving force of equipment is less, adopts low power motor as power source, and operating cost is low.
The specific embodiment
The present invention is described further below in conjunction with embodiment.
Embodiment one
Producing diameter is 3 millimeters, and 300 millimeters of length, percetage by weight are respectively the silk material of 70 and 30 tungsten-copper alloy W70Cu30.
Present embodiment may further comprise the steps:
Step 1, batching: take by weighing copper powder 20 grams earlier, tungsten powder 35 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 6 μ m, adds i.e. 6.05 milliliters the glycerine that accounts for copper powder and tungsten powder gross weight 11wt% again and does additive,, common Mixing Machine mixed 6 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 10m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1700 ± 10 ℃ of temperature are incubated 1.5 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 10 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1320 ± 5 ℃ of control temperature are incubated 1.5 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 850 ℃, insulation 40min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 310 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
Embodiment 2
Producing diameter is 2 millimeters, and length is 400 millimeters, and percetage by weight is respectively the silk material of 85 and 15 tungsten-copper alloy W85Cu15.
Present embodiment may further comprise the steps:
Step 1, batching: take by weighing copper powder 11.25 grams earlier, tungsten powder 29.75 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 5 μ m, add i.e. 4.92 milliliters the glycerine that accounts for copper powder and tungsten powder gross weight 12wt% again and do additive,, common Mixing Machine mixed 4 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 10m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1800 ± 10 ℃ of temperature are incubated 2 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 8.2 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1345 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 750 ℃, insulation 50min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 2.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 2.3 millimeters of the diameter that obtains of will swaging, long 410 millimeters thin rod carries out grinding on centerless grinding equipment, and to 2 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
Embodiment 3
Producing diameter is 3 millimeters, the silk material of the tungsten-copper alloy W80Cu20 that length is 500 millimeters.
Present embodiment may further comprise the steps:
Step 1, batching: take by weighing copper powder 15 grams earlier, tungsten powder 40 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 4 μ m, adds i.e. 8.25 milliliters the glycerine that accounts for copper powder and tungsten powder gross weight 15wt% again and does additive,, common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1750 ± 10 ℃ of temperature are incubated 1.8 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 11 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1340 ± 5 ℃ of control temperature are incubated 1.6 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 800 ℃, insulation 45min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 510 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
Embodiment 4
Producing diameter is 3 millimeters, the silk material of the tungsten-copper alloy W60Cu40 that length is 500 millimeters.
Present embodiment may further comprise the steps:
Step 1, batching: take by weighing copper powder 40 grams earlier, tungsten powder 48 grams, the particle diameter of copper powder is 60 μ m, the particle diameter of tungsten powder is 4 μ m, adds i.e. 13.2 milliliters the glycerine that accounts for copper powder and tungsten powder gross weight 15wt% again and does additive,, common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1660 ± 10 ℃ of temperature are incubated 1.9 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 10mm is placed in the graphite boat, on blank, place the copper billet of weight 17.6 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1310 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 780 ℃, insulation 48min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 510 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
Embodiment 5
Producing diameter is 3 millimeters, and the tungsten-copper alloy that length is 600 millimeters is the silk material of W50Cu50.
Present embodiment may further comprise the steps:
Step 1, batching: take by weighing copper powder 25 grams earlier, tungsten powder 26 grams, the particle diameter of copper powder is 60 μ m, the particle diameter of tungsten powder is 5 μ m, adds i.e. 7.7 milliliters the glycerine that accounts for copper powder and tungsten powder gross weight 15wt% again and does additive,, common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1660 ± 10 ℃ of temperature are incubated 2 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 10mm is placed in the graphite boat, on blank, place the copper billet of weight 10.2 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1310 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 830 ℃, insulation 42min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 610 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
Following table has been listed 3 millimeters of diameters, 300 millimeters of the length of the present invention and the preparation of other technologies method, and composition is the relevant performance indications comparison sheet of the alloy wire of W80Cu20.
Method of the present invention can prepare the silk material of various diameters, and length is not limit, and the stable performance of product, quality height, cost are low, and whole process of preparation is simple to operate, the yield rate height.
Claims (6)
1. a method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing the copper powder of 10～50wt% and the tungsten powder of 50～90wt% earlier, the particle diameter of copper powder is 50～80 μ m, the particle diameter of tungsten powder is 4～6 μ m, adds the glycerine that accounts for copper powder and tungsten powder gross weight 10～15wt% again and does additive, and common Mixing Machine mixed 4～8 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is in the graphite jig die cavity of 10mm with the high speed of the 8～15m/s diameter of packing into;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1650 ℃～1850 ℃ of temperature are incubated 1.5～2.0 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5～10mm is placed in the graphite boat, on blank, place the copper billet of billet weight 20%, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the protective atmosphere sintering furnace of hydrogen or helium, gas flow is 2L/h then, 1300 ℃～1350 ℃ of control temperature are incubated 1.5～2.0 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 750～850 ℃, insulation 40～50min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching the required diameter requirement, turned blank is selected to carry out once or annealing in process repeatedly 700～800 ℃ of temperature;
Step 6, centerless grinding processing: the WCu alloy wire blank that obtains of will swaging carries out grinding on centerless grinding equipment, to guarantee size and surface quality requirement.
2. a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material according to claim 1 is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing copper powder 20 grams earlier, tungsten powder 35 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 6 μ m, adds i.e. 6.05 milliliters the glycerine that accounts for material gross weight 11wt% again and does additive,, common Mixing Machine mixed 6 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 10m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1700 ± 10 ℃ of temperature are incubated 1.5 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 10 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1320 ± 5 ℃ of control temperature are incubated 1.5 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 850 ℃, insulation 40min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 310 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
3. a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material according to claim 1 is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing copper powder 11.25 grams earlier, tungsten powder 29.75 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 5 μ m, adds i.e. 4.92 milliliters the glycerine that accounts for material gross weight 12wt% again and does additive,, common Mixing Machine mixed 4 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 10m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1800 ± 10 ℃ of temperature are incubated 2 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 8.2 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1345 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 750 ℃, insulation 50min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 2.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 2.3 millimeters of the diameter that obtains of will swaging, long 410 millimeters thin rod carries out grinding on centerless grinding equipment, and to 2 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
4. a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material according to claim 1 is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing copper powder 15 grams earlier, tungsten powder 40 grams, the particle diameter of copper powder is 74 μ m, the particle diameter of tungsten powder is 4 μ m, adds i.e. 8.25 milliliters the glycerine that accounts for material gross weight 15wt% again and does additive,, common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1750 ± 10 ℃ of temperature are incubated 1.8 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 5mm is placed in the graphite boat, on blank, place the copper billet of weight 11 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1340 ± 5 ℃ of control temperature are incubated 1.6 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 800 ℃, insulation 45min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 510 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
5. a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material according to claim 1 is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing copper powder 40 grams earlier, tungsten powder 48 grams, the particle diameter of copper powder is 60 μ m, the particle diameter of tungsten powder is 4 μ m, adds i.e. 13.2 milliliters the glycerine that accounts for material gross weight 15wt% again and does additive,, common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1660 ± 10 ℃ of temperature are incubated 1.9 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 10mm is placed in the graphite boat, on blank, place the copper billet of weight 17.6 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1310 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 780 ℃, insulation 48min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 510 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
6. a kind of method of utilizing the hot-swage technology to prepare tungsten copper alloy wire material according to claim 1 is characterized in that, may further comprise the steps:
Step 1, batching: take by weighing copper powder 25 grams earlier, tungsten powder 26 grams, the particle diameter of copper powder is 60 μ m, and the particle diameter of tungsten powder is 5 μ m, adds i.e. 7.7 milliliters the glycerine that accounts for material gross weight 15wt% again and does additive, and common Mixing Machine mixed 5 hours;
Step 2, moulding: the viscous fluid with certain flowability that step 1 is mixed is 10mm with the high speed of the 8m/s diameter of packing into, length 200mm the graphite jig die cavity in;
Step 3, sintering: the blank of step 2 together with graphite jig, is placed in the vacuum sintering furnace together, and vacuum is not more than 10
-2Pa, 1660 ± 10 ℃ of temperature are incubated 2 hours sintering;
Step 4, infiltration: the blank that step 3 is sintered takes out from graphite jig, interval with 10mm is placed in the graphite boat, on blank, place the copper billet of weight 10.2 grams, add granularity 100 purpose high purity aluminium oxide powder filler tampings on every side, addition is all to surround blank and copper billet exceeds, and in the hydrogen shield atmosphere sintering furnace, gas flow is 2L/h then, 1310 ± 5 ℃ of control temperature are incubated 2 hours infiltration copper;
Step 5, hot-swage: the blank that sintering and infiltration is good takes out from graphite boat, in chamber type electric resistance furnace, be heated to 830 ℃, insulation 42min, be put into then on the swager by producing reciprocal relative motion between the forging die, rapidoprint is applied the compression of every square millimeter of 6 kgf, produce hammering, the roller that applies compression rotates around tup with final drive shaft, a moving week of final drive shaft revolution when swaging, each tup by the hammering of 4 rollers difference once, thereby power is reached forging die by tup, up to acting on the blank, in machining process, adopt special-shaped forging die hammering turned blank, until reaching 3.3 millimeters of diameters, turned blank is selected to carry out annealing in process, 750 ℃ of temperature;
Step 6, centerless grinding processing: about 3.3 millimeters of the diameter that obtains of will swaging, long 610 millimeters thin rod carries out grinding on centerless grinding equipment, and to 3 millimeters of diameters, the silk material that the surface reaches 1.6 fineness get final product, with assurance size and surface quality requirement.
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| CN108754272A (en) * | 2018-03-20 | 2018-11-06 | 陕西中天火箭技术股份有限公司 | A kind of preparation method of big L/D ratio fine grain tungsten copper bar |
| CN114758840A (en) * | 2022-04-25 | 2022-07-15 | 苏州晶讯科技股份有限公司 | Tungsten-copper electrode slurry for high-temperature co-fired ceramic system and manufacturing method thereof |
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Application publication date: 20111026 |