CN107584251B - A kind of manufacturing process of tantalum alloy shaped piece - Google Patents
A kind of manufacturing process of tantalum alloy shaped piece Download PDFInfo
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- CN107584251B CN107584251B CN201710803682.3A CN201710803682A CN107584251B CN 107584251 B CN107584251 B CN 107584251B CN 201710803682 A CN201710803682 A CN 201710803682A CN 107584251 B CN107584251 B CN 107584251B
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Abstract
The present invention provides a kind of manufacturing process of tantalum alloy shaped piece, comprising the following steps: Step 1: obtaining tantalum alloy shaped piece semi-finished product for drop stamping is carried out after the surface grinding of tantalum alloy plectane；Step 2: tantalum alloy shaped piece semi-finished product are carried out cold spinning or hot spinning, tantalum alloy shaped piece blank is obtained；Step 3: tantalum alloy shaped piece blank successively to be carried out to cutting and mechanical process, vacuum annealing process is then carried out, tantalum alloy shaped piece is obtained.The present invention first uses hot stamped process to make tantalum alloy plate preliminarily forming, obtain tantalum alloy shaped piece semi-finished product, then it is bonded the inner surface of tantalum alloy shaped piece semi-finished product sufficiently with spinning mold using spinning process, to guarantee that it is uniform that spinning inner surface and outer surface are thinned, solve the problems, such as that stamping difficult and spinning size is rambunctious during tantalum alloy slab prepares tantalum alloy shaped piece, the lumber recovery of tantalum alloy shaped piece is improved, and improves the surface quality of tantalum alloy shaped piece.
Description
Technical field
The invention belongs to tantalum alloy forming technique fields, and in particular to a kind of manufacturing process of tantalum alloy shaped piece.
Background technique
Tantalum and tantalum alloy have high density, high-melting-point, high intensity and the product such as excellent acid and alkali-resistance and resistance to liquid metal corrosion
Matter has a wide range of applications in fields such as chemical industry, aerospace, weaponry, electronics.Heat exchanger, shell in chemical industry equipment,
Tubular heater and Thermal couple casing pipe and the tankage of relieving haperacidity, pipeline, storage tank, transfer cask end socket etc. for anticorrosion,
All using tantalum and tantalum alloy as liner.In aerospace field, tantalum alloy is used as rocket nozzle material.In weaponry
Field, tantalum alloy substantially increase the armour-piercing capability of penetration body as high explosive anti-tank cartridge shaped charge material.In recent years, with above-mentioned neck
The demand of the development in domain, tantalum and tantalum alloy sharply increases.
Tantalum alloy product is mostly the special-shaped revolving meber such as tubulose, hemispherical, ball missing shape, and for the performance for guaranteeing product, abnormity is returned
Turn part not and can be carried out welding, is prepared mostly by the stamped method of tantalum alloy plate or spinning process.Some researches show that tantalum alloys
Inevitably there is anisotropy in plate internal structure, therefore ear phenomenon processed is easy to appear in punching course, cause product
Lumber recovery decline, as shown in Figure 1；When tantalum alloy plate is thicker, the ear phenomenon processed in punching course is serious, and product shaping is tired
Difficulty, high rejection rate cause the significant wastage of material, especially for this expensive metal of tantalum, considerably increase raw material
Cost.And when preparing tantalum alloy shaped piece using tantalum alloy slab using spinning process, spinning roller pressure is difficult to accurate transfer to spinning
The inner surface of part, cause the outer surface of spinning part occurred to be thinned and inner surface not yet mold the problem of, keep the size of product difficult
With control, especially when machining shape is more complex and the biggish product of depth, direct spinning easily generates drawing crack phenomenon.Cause
This, it is individually relatively low using the lumber recovery that pressing or spinning process prepare tantalum alloy shaped piece using tantalum alloy slab.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing, a kind of tantalum alloy is different
The manufacturing process of shape part.This method combines hot stamped process and spinning process, first keeps tantalum alloy plate preliminary using hot stamped process
Forming, reduces the anisotropic influence of tantalum alloy plate internal structure, obtains tantalum alloy shaped piece semi-finished product, then use
Spinning process is bonded the inner surface of tantalum alloy shaped piece semi-finished product sufficiently with spinning mold, to guarantee spinning inner surface and appearance
Face is thinned uniformly, and it is difficult to control to solve stamping difficult and spinning size during tantalum alloy slab prepares tantalum alloy shaped piece
The problem of, the lumber recovery of tantalum alloy shaped piece is improved, production cost is reduced, and improves the surface matter of tantalum alloy shaped piece
Amount.
In order to solve the above technical problems, the present invention provides a kind of manufacturing process of tantalum alloy shaped piece, which is characterized in that
Method includes the following steps:
Step 1: then the surface grinding of tantalum alloy plectane is carried out drop stamping, tantalum alloy shaped piece semi-finished product are obtained；
The diameter of the tantalum alloy plectane is 200mm~500mm, with a thickness of 10mm~20mm；
Step 2: tantalum alloy shaped piece semi-finished product obtained in step 1 are carried out spinning, tantalum alloy shaped piece hair is obtained
Base；The spinning is cold spinning or hot spinning；
Step 3: tantalum alloy shaped piece blank obtained in step 2 successively to be carried out to cutting and mechanical process, then
Vacuum annealing process is carried out, tantalum alloy shaped piece is obtained.
The manufacturing process of above-mentioned a kind of tantalum alloy shaped piece, which is characterized in that tantalum alloy plectane described in step 1 is
Tantalum-niobium alloy plectane or tantalum-tungsten alloy plectane.
A kind of manufacturing process of above-mentioned tantalum alloy shaped piece, which is characterized in that the temperature of drop stamping described in step 1
It is 200 DEG C~600 DEG C.
A kind of manufacturing process of above-mentioned tantalum alloy shaped piece, which is characterized in that the temperature of hot spinning described in step 2
It is 650 DEG C~1000 DEG C.
A kind of manufacturing process of above-mentioned tantalum alloy shaped piece, which is characterized in that the temperature of vacuum annealing described in step 3
Degree is 1100 DEG C~1300 DEG C, and the time is 1h~2h, and vacuum degree is not more than 1 × 10-2Pa。
Compared with the prior art, the present invention has the following advantages:
1, tantalum alloy shaped piece is prepared using the method that hot stamped process and spinning process combine in the present invention, first using heat
Pressing changes the shape of tantalum alloy plate, makes tantalum alloy shaped piece preliminarily forming, obtains tantalum alloy shaped piece semi-finished product, reduces
The anisotropic influence of tantalum alloy plate internal structure avoids the ear phenomenon processed that direct punching press generates；Then using rotation
Platen press finishes tantalum alloy shaped piece semi-finished product, obtains tantalum alloy shaped piece blank, tantalum alloy shaped piece half in spinning process
The inner surface of finished product can be sufficiently bonded with spinning mold, to guarantee that spinning inner surface and outer surface are thinned uniformly, will not be accumulated
Folding or drawing crack are generated, the size and shape of product has been efficiently controlled, has improved the lumber recovery of tantalum alloy shaped piece, reduce
Production cost.
2, the spinning for improving tantalum alloy shaped piece semi-finished product in the present invention using hot spinning technique, prevents spinning process
The defects of middle generation fish scale-shaped burr or peeling, and cutting and process for machining are combined, burr removing and burr are removed, product is improved
Dimensional accuracy, while reducing product surface roughness, improve the surface quality of tantalum alloy shaped piece.
3, manufacturing process of the invention is simple and easy, not high to equipment requirement, easy to spread, and it is more multiple to be suitable for machining shape
The biggish tantalum alloy shaped piece product of miscellaneous and depth.
Technical solution of the present invention is described in further detail below by drawings and examples.
Detailed description of the invention
Fig. 1 is the photo of the pressing tantalum alloy shaped piece obtained with ear phenomenon processed in the prior art.
Fig. 2 is the forming schematic diagram of TaNb3 shaped piece made from the embodiment of the present invention 1.
Fig. 3 is the forming schematic diagram of TaNb20 shaped piece made from the embodiment of the present invention 2.
Fig. 4 is the photo of TaNb20 shaped piece made from the embodiment of the present invention 2.
Fig. 5 is the forming schematic diagram of TaW10 shaped piece made from the embodiment of the present invention 3.
Fig. 6 is the forming schematic diagram of TaW12 shaped piece made from the embodiment of the present invention 4.
Specific embodiment
Embodiment 1
As shown in Fig. 2, solid line indicates stamping part, dotted line table in the forming process of the present embodiment TaNb3 shaped piece
Show mould pressing part, R1Indicate the top radius of TaNb3 shaped piece semi-finished product.
The present embodiment the following steps are included:
Step 1: by the TaNb3 plate cutting obtained by tandem rolling at diameter for 500mm, with a thickness of 20mm's
TaNb3 plectane is heated to 200 DEG C and keeps the temperature 10min after the surface grinding of TaNb3 plectane, then through 2 passage punching presses, obtains
TaNb3 shaped piece semi-finished product；The top radius R of the TaNb3 shaped piece semi-finished product1It is 90 ° for 60mm, cone angle；
Spinning is carried out Step 2: TaNb3 shaped piece semi-finished product obtained in step 1 are placed on spinning machine, using graphite
Machinery oil intermixture lubrication, after 5 passage cold spinnings, obtains bullet shaped TaNb3 shaped piece blank；The cold rotation of 5 passage
The roller working radius of spinning machine is 20mm during pressure, and spinning roller feed speed is 0.5mm/r, TaNb3 shaped piece semi-finished product
Revolving speed is 200r/min；The top thickness of the bullet shaped TaNb3 shaped piece blank be 17.2mm, oral area with a thickness of
14.7mm, oral area outer diameter are 310mm；
Step 3: TaNb3 shaped piece blank obtained in step 2 is carried out wire cutting, after cutting oral area flash, carry out
Machining, then in vacuum degree 1 × 10-2Pa, 1.5h is made annealing treatment under conditions of 1100 DEG C, finally obtain TaNb3 shaped piece；Institute
The whole wall thickness for stating TaNb3 shaped piece is 14mm, and oral area outer diameter is 300mm, the smooth surface of the TaNb3 shaped piece without
Crackle.
Through weighing, the weight of TaNb3 plectane is 63.4kg in the present embodiment, and the weight of TaNb3 shaped piece is 51.7kg, at
Material rate is 81.5%.
Embodiment 2
As shown in figure 3, solid line indicates stamping part, dotted line in the forming process of the present embodiment TaNb20 shaped piece
Indicate mould pressing part, R2Indicate the top radius of TaNb20 shaped piece semi-finished product.
The present embodiment the following steps are included:
Step 1: by the TaNb20 plate cutting obtained by tandem rolling at diameter for 325mm, with a thickness of 15mm's
TaNb20 plectane is heated to 200 DEG C and keeps the temperature 10min after the surface grinding of TaNb20 plectane, then through 1 passage punching press, obtains
To TaNb20 shaped piece semi-finished product；The top radius R of the TaNb20 shaped piece semi-finished product2It is 120 ° for 85mm, cone angle；
Spinning is carried out Step 2: TaNb20 shaped piece semi-finished product obtained in step 1 are placed on spinning machine, using stone
Black machinery oil intermixture lubrication, after 7 passage cold spinnings, obtains TaNb20 shaped piece blank；The 7 passage cold spinning process
The roller working radius of middle spinning machine is 20mm, and spinning roller feed speed is 1mm/r, and the revolving speed of TaNb20 shaped piece semi-finished product is
150r/min；The top thickness of the TaNb20 shaped piece blank is 12mm, and spherical crown is with a thickness of 9.8mm, straight wall segment length
43mm, for straight wall section with a thickness of 8.8mm, oral area outer diameter is 187.6mm；
Step 3: TaNb20 shaped piece blank obtained in step 2 is carried out wire cutting, after cutting oral area flash, carry out
Machining, then in vacuum degree 4.3 × 10-3Pa, 1h is made annealing treatment under conditions of 1200 DEG C, finally obtain TaNb20 shaped piece；
The whole wall thickness of the TaNb20 shaped piece is 8.2mm, and top radius 85mm, straight wall segment length is 40mm, and oral area outer diameter is
186.4mm。
Fig. 4 is the TaNb20 shaped piece figure that the present embodiment obtains, from fig. 4, it can be seen that the TaNb20 that the present embodiment obtains
Shaped piece uniform wall thickness, mouth rim is smooth, any surface finish flawless.
Through weighing, the weight of TaNb20 plectane is 18.5kg in the present embodiment, and the weight of TaNb20 shaped piece is 15.4kg,
Lumber recovery is 83.2%.
Embodiment 3
As shown in figure 5, solid line indicates stamping part, dotted line table in the forming process of the present embodiment TaW10 shaped piece
Show mould pressing part, Φ1Indicate the bottom outer diameter of TaW10 shaped piece semi-finished product.
The present embodiment the following steps are included:
Step 1: by the TaW10 plate cutting obtained by tandem rolling at diameter for 200mm, with a thickness of 13mm's
TaW10 plectane will be coated with antioxidant coating after the surface grinding of TaW10 plectane, be then heated to 600 DEG C and keep the temperature 20min, then
Through 3 passage punching presses, the TaW10 shaped piece semi-finished product of bowl-type are obtained；The bottom outer diameter of the TaW10 shaped piece semi-finished product of the bowl-type
Φ1For 80mm；
Hot spinning is carried out Step 2: TaW10 shaped piece semi-finished product obtained in step 1 are placed on spinning machine, using stone
Black machinery oil intermixture lubrication, spray gun heating, hand-held infrared radiation thermometer thermometric obtain loudspeaker through 5 passage tension-thining hot spinnings
The TaW10 shaped piece blank of shape；During the 5 passage tension-thining hot spinning, control the temperature of hot spinning from 900 DEG C by
Gradually it is reduced to 650 DEG C；During the 5 passage tension-thining hot spinning, the roller working radius of spinning machine is 15mm, spinning roller into
It is 0.4mm/r to speed, the revolving speed of TaW10 shaped piece semi-finished product is 150r/min；The tubaeform TaW10 shaped piece blank
Bottom outer diameter be 80mm, the wall thickness of bottom thickness 12.1mm, tubaeform bottom to oral area is thinned from 9.4mm as 5.8mm, mouth
Portion's outer diameter is 230mm；
Step 3: TaW10 shaped piece blank obtained in step 2 is carried out wire cutting, after cutting oral area flash, carry out
Machining, then in vacuum degree 5.6 × 10-3Pa, 2h is made annealing treatment under conditions of 1200 DEG C, finally obtain TaW10 shaped piece；Institute
The bottom outer diameter of TaW10 shaped piece is stated as 80mm, bottom thickness 10mm, the wall thickness of tubaeform bottom to oral area subtracts from 8.6mm
Thin is 5.0mm, and oral area outer diameter is 214mm, the smooth surface flawless of the TaW10 shaped piece.
Through weighing, the weight of TaW10 plectane is 6.9kg in the present embodiment, and the weight of TaW10 shaped piece is 5.8kg, is become a useful person
Rate is 84.1%.
Embodiment 4
As shown in fig. 6, solid line indicates stamping part, dotted line table in the forming process of the present embodiment TaW12 shaped piece
Show mould pressing part, Φ2Indicate the bottom outer diameter of TaW12 shaped piece semi-finished product.
The present embodiment the following steps are included:
Step 1: by the TaW12 plate cutting obtained by tandem rolling at diameter for 310mm, with a thickness of 10mm's
TaW12 plectane will be coated with antioxidant coating after the surface grinding of TaW12 plectane, be then heated to 580 DEG C and keep the temperature 20min, then
Through 2 passage punching presses, the TaW12 shaped piece semi-finished product of ladder circle tubular are obtained；The TaW12 shaped piece of the ladder circle tubular half at
The bottom outer diameter Φ of product2It is 90 ° for 90.5mm, cone angle；
Step 2: TaW12 shaped piece semi-finished product obtained in step 1 are made annealing treatment 1h under conditions of 1200 DEG C, so
It is placed on spinning machine and carries out hot spinning, lubricated using graphite machinery oil intermixture, spray gun heating, hand-held infrared radiation thermometer is surveyed
Temperature obtains the TaW12 shaped piece blank of truncated cone-shaped through 8 passage tension-thining hot spinnings；The 8 passage tension-thining hot spinning
In the process, the temperature for controlling hot spinning is gradually decrease to 700 DEG C from 1000 DEG C；During the 8 passage tension-thining hot spinning,
The roller working radius of spinning machine is 10mm, and spinning roller feed speed is 0.5mm/r, and the revolving speed of TaW12 shaped piece semi-finished product is
200r/min；The wall thickness of the TaW12 shaped piece blank of the truncated cone-shaped is 5.5mm, and bottom outer diameter is 90.5mm, and oral area outer diameter is
188mm, depth 305mm；
Step 3: TaW12 shaped piece blank obtained in step 2 is carried out wire cutting, after cutting oral area flash, carry out
Machining, then in vacuum degree 3.3 × 10-3Pa, 1h is made annealing treatment under conditions of 1300 DEG C, it is different to finally obtain truncated cone-shaped TaW12
Shape part；The whole wall thickness of the truncated cone-shaped TaW12 shaped piece is 5mm, and bottom outer diameter is 90mm, and oral area outer diameter is 180mm, depth
For 300mm, the smooth surface flawless of the truncated cone-shaped TaW12 shaped piece.
Through weighing, the weight of TaW12 plectane is 12.8kg in the present embodiment, and the weight of TaW12 shaped piece is 10.3kg, at
Material rate is 80.5%.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way.It is all according to invention skill
Art any simple modification, change and equivalence change substantially to the above embodiments, still fall within technical solution of the present invention
Protection scope in.
Claims (4)
1. a kind of manufacturing process of tantalum alloy shaped piece, which is characterized in that method includes the following steps:
Step 1: then the surface grinding of tantalum alloy plectane is carried out drop stamping, tantalum alloy shaped piece semi-finished product are obtained；It is described
The diameter of tantalum alloy plectane is 200mm ~ 500mm, with a thickness of 10mm ~ 20mm；
Step 2: tantalum alloy shaped piece semi-finished product obtained in step 1 are carried out spinning, tantalum alloy shaped piece blank is obtained；Institute
Stating spinning is hot spinning, and the temperature of the hot spinning is 650 DEG C ~ 1000 DEG C；
Step 3: tantalum alloy shaped piece blank obtained in step 2 successively to be carried out to cutting and mechanical process, then carry out
Vacuum annealing process obtains tantalum alloy shaped piece.
2. a kind of manufacturing process of tantalum alloy shaped piece according to claim 1, which is characterized in that tantalum described in step 1
Alloy plectane is tantalum-niobium alloy plectane or tantalum-tungsten alloy plectane.
3. a kind of manufacturing process of tantalum alloy shaped piece according to claim 1, which is characterized in that heat described in step 1
The temperature of punching press is 200 DEG C ~ 600 DEG C.
4. a kind of manufacturing process of tantalum alloy shaped piece according to claim 1, which is characterized in that true described in step 3
The temperature of sky annealing is 1100 DEG C ~ 1300 DEG C, and the time is 1h ~ 2h, and vacuum degree is not more than 1 × 10-2Pa。
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| CN1985021A (en) * | 2003-12-22 | 2007-06-20 | 卡伯特公司 | High integrity sputtering target material and method for producing bulk quantities of same |
| CN102615175A (en) * | 2012-03-12 | 2012-08-01 | 宜兴市联丰化工机械有限公司 | Processing method for alloy end enclosure |
| CN103071736B (en) * | 2012-12-28 | 2015-08-12 | 西安优耐特容器制造有限公司 | A kind of Large Titanium end socket composite molding technique |
| CN103849803B (en) * | 2014-03-26 | 2017-01-11 | 宁夏东方钽业股份有限公司 | Tantalum alloy and method for preparing tantalum alloy tube |
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