CN101653792B - Processing method of molybdenum and molybdenum alloy narrowband - Google Patents
Processing method of molybdenum and molybdenum alloy narrowband Download PDFInfo
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- CN101653792B CN101653792B CN2009100240004A CN200910024000A CN101653792B CN 101653792 B CN101653792 B CN 101653792B CN 2009100240004 A CN2009100240004 A CN 2009100240004A CN 200910024000 A CN200910024000 A CN 200910024000A CN 101653792 B CN101653792 B CN 101653792B
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Abstract
The invention discloses a processing method of molybdenum and molybdenum alloy narrowband, comprising the following steps: 1. adopting a rolling mill to roll molybdenum or molybdenum alloy wires to obtain a rolled narrowband; 2. adopting a drawbench to draw the rolled narrowband according to cold drawing technique to obtain a finished narrowband. The drawing process comprises the following steps: manufacturing a heterotype drawing die, smearing a layer of lubricant evenly on outer surface of the rolled narrowband, wherein the lubricant is formed by evenly mixing transformer oil and butter with the mass ratio accounted by butter being 20-50%, penetrating the rolled narrowband smeared with lubricant through the deltoid drawing die pore and sending into a material clamp of the drawbench to be clamped tightly, afterwards starting the drawbench to draw to obtain the finished narrowband. The invention is convenient in processing and manufacturing, good in use effect, high in quality of the processed molybdenum and molybdenum alloy narrowband, and can effectively solve various defects and shortcomings existing in the current molybdenum and molybdenum alloy narrowband processing method.
Description
Technical field
The invention belongs to non-ferrous metal pressure processing technology field, especially relate to the processing method of a kind of molybdenum and molybdenum alloy narrowband.
Background technology
Molybdenum and molybdenum alloy narrowband are a kind of high strength, resistant to elevated temperatures special type function material and structural materials commonly used in electronics industry and other industry, its production method roughly is divided into two kinds: the one, make raw material with sheet material, rolling through foil mill, be cut into the arrowband with shearing machine again, the stock size scope is at (0.1～0.5) * (1.0～15.0) * Lmm; Another kind method is to be raw material with molybdenum and molybdenum alloy wire, and mill milling forms through the arrowband, and size range is at (0.01～0.2) * (0.3～10.0) * Lmm.The arrowband of two kinds of method productions is the birth defects of various degrees all, and these defectives are can not be received in some use occasion of having relatively high expectations.
The subject matter that the arrowband that first method is produced exists is that glacing flatness is poor, and the edge is jagged, and this is unallowed in some electronic device, because glacing flatness missionary society influences the turn-to-turn dimensional homogeneity of coiling; Burr then causes point discharge easily, influences serviceability.
The arrowband major defect that second method is produced is that thickness and width dimensions tolerance are big, for some important electron components and parts 〉=± tolerance of 0.005mm is exactly unallowed, this almost is the precision index that can not realize to the rolling arrowband of silk material.
In sum: two kinds of common methods of processing molybdenum and molybdenum alloy narrowband are: sheet material is rolled into go up banding machine again behind the foil and be cut into the arrowband and roll into the arrowband with a material, but in the actual use, all there are many defectives in above-mentioned two kinds of process products made therebies, for example glacing flatness is poor, jagged, the margin of tolerance is big etc., is difficult to satisfy the instructions for use of some extraordinary occasion.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, the processing method of a kind of molybdenum and molybdenum alloy narrowband is provided, molybdenum and molybdenum alloy narrowband quality height that its processing and fabricating is convenient and result of use is good, processed can effectively solve existing molybdenum and existing number of drawbacks of molybdenum alloy narrowband processing method and deficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is: propose the processing method of a kind of molybdenum and molybdenum alloy narrowband, it is characterized in that this method may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould of outer steel sleeve inside, and the both sides, front and back that have in the middle part of the described wire-drawing shape mould with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth;
202, evenly smear one deck lubricant on the surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%;
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.
The sizing section length H of special die for drawing described in the above-mentioned steps 201 is 0.2～0.8mm.
The process that in the above-mentioned steps one described molybdenum or molybdenum alloy wire is rolled may further comprise the steps:
101, the flakiness ratio of calculating need machine-shaping finished product arrowband is B/ δ and 1＜B/ δ≤100, selects rolling molybdenum or the required total working modulus ε of molybdenum alloy wire according to B/ δ again
Always, total working modulus ε
AlwaysBe 1～98%; The numerical value of described B/ δ is big more, total working modulus ε
AlwaysBig more;
102, according to formula Ф=δ/(1-ε
Always) calculate the diameter Ф of selected molybdenum or molybdenum alloy wire;
103, according to determined total working modulus ε in the step 101
AlwaysSelect and determine pass reduction ε % when rolling, and corresponding definite rolling pass number, described pass reduction ε %=5%～39%; The road number of times is an one or many.
104, adopt milling train described molybdenum or molybdenum alloy wire to be carried out the rolling back of one or more passages and obtain rolling arrowband with cold rolling, warm-rolling and hot rolling mode.
When described in the above-mentioned steps 104 described molybdenum or molybdenum alloy wire being rolled, rolling temperature is the recrystallization temperature that 1～900 ℃ and rolling temperature are not higher than described molybdenum or molybdenum alloy wire.
When described in the above-mentioned steps 104 molybdenum or molybdenum alloy wire being rolled, former and later two tension motors of being installed on the described milling train act on respectively that the tension force on the unit cross-sectional area of both sides is 10～80% of described molybdenum or molybdenum alloy wire yield strength before and after described molybdenum or the molybdenum alloy wire; And the size of processed molybdenum or molybdenum alloy wire is big more, and the tension force that described former and later two tension motors act on described molybdenum or both sides, the molybdenum alloy wire front and back unit cross-sectional area is also big more.
Width B of finished product arrowband described in the above-mentioned steps one and thickness δ all≤during 0.3mm, the deltiod die channel structure of made special die for drawing only need guarantee that its thickness and width=0.3mm consistent with the thickness δ of finished product arrowband gets final product in the step 201, and also need make the die channel diameter circular hole wire drawing die two more identical with width B with the die channel diameter than the circular hole wire drawing die one of the little 0.02～0.07mm of width B in the step 201; Correspondingly, start in the step 203 when wire drawing machine carries out drawing and adopt a plurality of wire drawing dies that described rolling arrowband is replaced drawing, the most described rolling arrowband drawing is treated to the finished product arrowband.
The present invention compared with prior art has the following advantages:
1, the simple and enforcement convenience of procedure of processing.
2, the wire-drawing shape mould of the special die for drawing of made employing polycrystalline diamond or natural diamond are raw material, after laser boring and the grinding of Buddha's warrior attendant gypsum, make the flat square hole mould that is of the required size, the geometric parameter of mould directly influences the success or failure of arrowband drawing, and the Design of length of sizing section is reasonable among the present invention.In the actual mechanical process, when sizing section length hour, through the drawing of a period of time, die wear causes size to become big, the out-of-size requirement; If sizing section length is too big, then frictional force is bigger, and easy fracture of wire during drawing has only the sizing section moderate length, could obtain the little product of dimensional tolerance and guarantee the wire drawing die life-span.
3, the present invention proposes reasonably silk material diameter method for designing of a cover, has only and has selected suitable silk material diameter, through the rolling rolling arrowband that could obtain the required size specification.The flakiness ratio B/ δ of finished product arrowband is big more, then total working modulus ε
AlwaysBig more, select the diameter Ф of molybdenum or molybdenum alloy wire big more; The roller diameter of used milling train is big more, and the diameter Ф of selected molybdenum or molybdenum alloy wire is more little; Pass reduction ε % is big more, and absolute spread is big more, and the diameter Ф of molybdenum or molybdenum alloy wire selects more little; Rolling temperature is high more, and absolute spread is big more, and the diameter Ф of molybdenum or molybdenum alloy wire selects more little; Used tension force is big more in the operation of rolling, and absolute spread is more little, and the diameter Ф of molybdenum or molybdenum alloy wire selects big more.
In addition, the difference of rolling arrowband size and finished product arrowband size accounts for the proportionate relationship of finished product arrowband size, reserves the drawing processing capacity that is:, is decision drawing key of success, generally is controlled at 5%～25% of gauge, 10%～30% of width dimensions.When the reservation processing capacity is too big, the easy fracture of wire of drawing; And processing capacity when less than normal dimensional tolerance do not reach index request, surface smoothness does not reach requirement.Have only the control processing capacity in given scope, could obtain the product that size is qualified, fineness is qualified, the present invention is reasonable in design to reserving the drawing processing capacity.
4, drawing process generally is divided into hot-drawn, Wen La and cold drawn, shows through result of the test: hot-drawn easily produces " silk contracts ", and size is less than normal; Temperature is drawn easily oxidation of surface, the bad selection of lubricant; Have only cold drawn effect best, dimensional accuracy, surface smoothness all reach ideal effect.Among the present invention, employing drawing temperature is that the cold-drawing technology of room temperature carries out the drawing processing to the rolling arrowband that is rolled into.
5, lubricant composition is reasonable in design, and the rolling arrowband of drawing selects lubricant most important.The lubricant of selecting for different materials also has difference.When the material deformation drag is low, can select the less lubricant of viscosity; When the distortion of materials drag is big, should select the bigger lubricant of viscosity, this is because the material deformation drag is big, the normal pressure that mould is applied is big, thereby frictional force is also big, if lubricant viscosity is little, then rupture of oil film, material directly contacts with mould, causes frictional force to increase, and causes problems such as fracture of wire, die wear, material and mould adhesion, surface smoothness reduction.The invention provides a kind of homemade lubricant, can overcome above-mentioned number of drawbacks and deficiency, and can realize best lubricating effect.
6, applied widely, the present invention can finish the accurate processing of multiple size molybdenum and molybdenum alloy narrowband among (0.01～0.2) * (0.3～10.0) * Lmm.The diameter of used molybdenum and molybdenum alloy wire is 0.1mm～6mm.
7, processing effect is good.The present invention adopts and rollingly adds special-shaped mould hubbing molybdenum and molybdenum alloy narrowband are processed, and specifically is rolled into arrowband greater than finished product requirement size with the silk material earlier, and adjusting process parameter in good time in rolling can obtain the arrowband of required size, is rolled into the power height; Pull out through flat side's die drawing again, can obtain dimensional tolerance≤± 0.005mm, arrowband product that surface smoothness is good, meet customer need.
In sum, molybdenum and molybdenum alloy narrowband quality height that processing and fabricating of the present invention is convenient and result of use is good, processed can effectively solve existing molybdenum and existing number of drawbacks of molybdenum alloy narrowband processing method and deficiency.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of used special die for drawing in the process of the present invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is a processing method flow chart of the present invention.
Description of reference numerals:
The 1-outer steel sleeve; 2-wire-drawing shape mould.
The specific embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the processing method of molybdenum of the present invention and molybdenum alloy narrowband may further comprise the steps:
The process that in this step described molybdenum or molybdenum alloy wire is rolled may further comprise the steps:
101, the flakiness ratio of calculating need machine-shaping finished product arrowband is B/ δ and 1＜B/ δ≤100, selects rolling molybdenum or the required total working modulus ε of molybdenum alloy wire according to B/ δ again
Always, total working modulus ε
AlwaysBe 1～98%, the numerical value of described B/ δ is big more, total working modulus ε
AlwaysBig more;
102, according to formula Ф=δ/(1-ε
Always) calculate the diameter Ф of selected molybdenum or molybdenum alloy wire;
103, according to determined total working modulus ε in the step 101
AlwaysSelect and determine pass reduction ε % when rolling, and corresponding definite rolling pass number, described pass reduction ε %=5%～39%;
104, adopt milling train described molybdenum or molybdenum alloy wire to be carried out the rolling back of one or more passages and obtain rolling arrowband with cold rolling, warm-rolling and hot rolling mode.
When in the step 104 described molybdenum or molybdenum alloy wire being rolled, rolling temperature is the recrystallization temperature that 1～900 ℃ and rolling temperature are not higher than described molybdenum or molybdenum alloy wire; The tension force that former and later two tension motors of being installed on the described milling train act on respectively on described molybdenum or both sides, the molybdenum alloy wire front and back unit cross-sectional area is 10～80% of described molybdenum or molybdenum alloy wire yield strength; And the size of processed molybdenum or molybdenum alloy wire is big more, and the tension force that described former and later two tension motors act on described molybdenum or both sides, the molybdenum alloy wire front and back unit cross-sectional area is big more.
201, make special die for drawing: described special die for drawing comprises outer steel sleeve 1 and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould 2 of outer steel sleeve 1 inside, and the both sides, front and back that described wire-drawing shape mould 2 middle parts have with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth;
The sizing section length H of special die for drawing described in the step 201 is 0.2～0.8mm.
202, evenly smear one deck lubricant on the outer surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%;
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.
The width B of the arrowband of finished product described in the step 1 and thickness δ all≤during 0.3mm, the deltiod die channel structure of made special die for drawing only need guarantee that its thickness is consistent with the thickness δ of finished product arrowband in the step 201, width=0.3mm gets final product, and also need make the die channel diameter circular hole wire drawing die two more identical with width B with the die channel diameter than the circular hole wire drawing die one of the little 0.02～0.07mm of width B in the step 201; Correspondingly, start in the step 203 when wire drawing machine carries out drawing and adopt a plurality of wire drawing dies that described rolling arrowband is replaced drawing, the most described rolling arrowband drawing is treated to the finished product arrowband.
In the present embodiment, require processing structure to be of a size of 0.45 * 1.8mm molybdenum arrowband, at first adopt milling train that the molybdenum filament material is rolled and obtains rolling arrowband, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B=1.8mm and its are for needing the width of machine-shaping finished product arrowband, and δ=0.45mm and its are the thickness of described finished product arrowband.Calculating and needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ, determines total working modulus
The silk footpath of then selected molybdenum filament material is Ф 1.25mm.Determine that pass reduction is 20～30%, then should be rolling through three passages.Afterwards, adopt milling train in the hot rolling mode described molybdenum filament material to be carried out three rolling backs of passage and obtain rolling arrowband, rolling temperature is 700 ℃～800 ℃.In the operation of rolling, the voltage of former and later two tension motors of being installed on the described milling train is adjusted into 120v and 180v respectively, and the rolling arrowband that obtains, rolling back is of a size of 0.5 * 1.95mm.In the present embodiment, described milling train is six roller arrowband milling trains.
Adopt wire drawing machine subsequently and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve 1 and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould 2 of outer steel sleeve 1 inside, and the both sides, front and back that described wire-drawing shape mould 2 middle parts have with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth.The sizing section length H of described special die for drawing is 0.2～0.8mm.Described deltiod die channel is of a size of (0.45 ± 0.002) * (1.8 ± 0.002) mm.
202, evenly smear one deck lubricant on the outer surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%.
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.Described wire drawing machine is the turntable wire drawing machine, and finally obtaining finished size is 0.45
-0.003* 1.8
-0.003* Lmm arrowband, surface smoothness reaches
8.
In the present embodiment, require processing structure to be of a size of 0.4 * 1.25mmTZM molybdenum alloy narrowband, at first adopt milling train that the molybdenum filament material is rolled and obtains rolling arrowband, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B=1.25mm and its are for needing the width of machine-shaping finished product arrowband, and δ=0.4mm and its are the thickness of described finished product arrowband.Calculating and needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ, determines total working modulus
The silk footpath of then selected molybdenum filament material is Ф 1.0mm.Determine that pass reduction is 20～30%, then should be rolling through three passages.Afterwards, adopt milling train in the hot rolling mode described molybdenum filament material to be carried out three rolling backs of passage and obtain rolling arrowband, rolling temperature is 800 ℃～900 ℃.In the operation of rolling, the voltage of former and later two tension motors of being installed on the described milling train is adjusted into 120v and 140v respectively, and the rolling arrowband that obtains, rolling back is of a size of 0.45 * 1.4mm.In the present embodiment, described milling train is six roller arrowband milling trains.
Adopt wire drawing machine subsequently and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve 1 and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould 2 of outer steel sleeve 1 inside, and the both sides, front and back that described shaping mould 2 middle parts have with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth.The sizing section length H of described special die for drawing is 0.2～0.8mm.Described deltiod die channel is of a size of (0.40 ± 0.002) * (1.25m ± 0.002) mm.
202, evenly smear one deck lubricant on the outer surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%.
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.Described wire drawing machine is the turntable wire drawing machine, and the dimensional tolerance that finally obtains finished product is ± 0.003mm fineness
8.
Embodiment 3
In the present embodiment, require processing structure to be of a size of the arrowband of 0.12 * 0.25mm, the width B of described finished product arrowband and thickness δ all≤during 0.3mm, the deltiod die channel structure of made special die for drawing only need guarantee that its thickness is consistent with the thickness δ of finished product arrowband in the step 201, width=0.3mm gets final product, and needs to make the die channel diameter circular hole wire drawing die two more identical with width B with the die channel diameter than the circular hole wire drawing die one of the little 0.02～0.07mm of width B; Correspondingly, start when wire drawing machine carries out drawing and adopt a plurality of wire drawing dies that described rolling arrowband is replaced drawing, the most described rolling arrowband drawing is treated to the finished product arrowband.
In the present embodiment, at first adopt milling train that the molybdenum filament material is rolled and obtains rolling arrowband, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B=0.25mm and its are for needing the width of machine-shaping finished product arrowband, and δ=0.12mm and its are the thickness of described finished product arrowband.Calculating and needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ, determines total working modulus
The silk footpath of then selected molybdenum filament material is Ф 0.22mm.Determine that pass reduction is 38.6%, i.e. a time roll forming.Afterwards, adopt milling train in the warm-rolling mode described molybdenum filament material to be carried out a rolling back of passage and obtain rolling arrowband, rolling temperature is 500 ℃～600 ℃.In the operation of rolling, the voltage of former and later two tension motors of being installed on the described milling train is adjusted into 50v and 80v respectively, and the rolling arrowband that obtains, rolling back is of a size of 0.135 * 0.28mm.
Afterwards, the special die for drawing that making is made up of outer steel sleeve 1 and polycrystalline diamond or natural diamond system wire-drawing shape mould 2, adopt wire drawing machine and described rolling arrowband is carried out drawing by cold-drawing process, adopt three kinds of wire drawing dies in the drawing process, comprise that die channel is the special die for drawing of deltiod die channel and circular hole wire drawing die one and the circular hole wire drawing die two that die channel is circular hole.The deltiod die channel of described special die for drawing is of a size of 0.12 * 0.3mm, and the die channel diameter of circular hole wire drawing die two is Ф 0.25mm, and the die channel diameter of circular hole wire drawing die one is Ф 0.245mm.During drawing, first mould carries out drawing with circular hole wire drawing die one, and second mould carries out drawing with special die for drawing, and the 3rd mould carries out drawing with circular hole wire drawing die two, and arrowband thickness and width dimensions tolerance remain on ± 0.002mm after three die drawings pull out.
Embodiment 4
In the present embodiment, as different from Example 3: when adopting milling train that the molybdenum filament material is rolled, in cold rolling mode described molybdenum filament material is carried out three rolling backs of passage and obtain rolling arrowband, rolling temperature is 1 ℃～50 ℃.All the other procedure of processings are all identical with embodiment 3 with technological parameter.
Embodiment 5
In the present embodiment, require processing structure to be of a size of 0.495 * 0.50mm molybdenum arrowband, at first adopt milling train that the molybdenum filament material is rolled and obtains rolling arrowband, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B=0.50mm and its are for needing the width of machine-shaping finished product arrowband, and δ=0.495mm and its are the thickness of described finished product arrowband.Calculating and needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ, determines total working modulus
The silk footpath of then selected molybdenum filament material is Ф 0.50mm.Determine that pass reduction is 1%, then should be through a time roll forming.Afterwards, adopt milling train in cold rolling mode described molybdenum filament material to be carried out a rolling back of passage and obtain rolling arrowband, rolling temperature is 1 ℃～30 ℃.In the operation of rolling, the voltage of former and later two tension motors of being installed on the described milling train is respectively 30v and 40v, and the rolling arrowband that obtains, rolling back is of a size of 0.53 * 0.55mm.In the present embodiment, described milling train is six roller arrowband milling trains.
Adopt wire drawing machine subsequently and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve 1 and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould 2 of outer steel sleeve 1 inside, and the both sides, front and back that described wire-drawing shape mould 2 middle parts have with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth.The sizing section length H of described special die for drawing is 0.2～0.8mm.Described deltiod die channel is of a size of (0.495 ± 0.002) * (0.500 ± 0.002) mm.
202, evenly smear one deck lubricant on the outer surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%.
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.Described wire drawing machine is the turntable wire drawing machine, and the dimensional tolerance that finally obtains finished product is ± 0.003mm fineness
6.
Embodiment 6
In the present embodiment, require processing structure to be of a size of 0.10 * 10.00mm molybdenum arrowband, at first adopt milling train that the molybdenum filament material is rolled and obtains rolling arrowband, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B=10.00mm and its are for needing the width of machine-shaping finished product arrowband, and δ=0.10mm and its are the thickness of described finished product arrowband.Calculating and needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ, determines total working modulus
The silk footpath of then selected molybdenum filament material is Ф 5.0mm.Determine that pass reduction is 25%, then should be rolling through six passages.Afterwards, adopt milling train in the warm-rolling mode described molybdenum filament material to be carried out six rolling backs of passage and obtain rolling arrowband, rolling temperature is 200 ℃～300 ℃.In the operation of rolling, the voltage of former and later two tension motors of being installed on the described milling train is respectively 200v and 230v, and the rolling arrowband that obtains, rolling back is of a size of 0.11 * 12mm.In the present embodiment, described milling train is a twelve high mill.
Adopt wire drawing machine subsequently and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve 1 and is sleeved on the polycrystalline diamond or the natural diamond system wire-drawing shape mould 2 of outer steel sleeve 1 inside, and the both sides, front and back that described wire-drawing shape mould 2 middle parts have with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth.The sizing section length H of described special die for drawing is 0.2～0.8mm.Described deltiod die channel is of a size of (0.10 ± 0.002) * (10.00 ± 0.002) mm.
202, evenly smear one deck lubricant on the outer surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%.
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing, promptly obtains the finished product arrowband.Described wire drawing machine is the traffic cycle wire drawing machine, and the dimensional tolerance that finally obtains finished product is ± 0.003mm fineness
6.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (6)
1. the processing method of molybdenum and molybdenum alloy narrowband is characterized in that this method may further comprise the steps:
Step 1, employing milling train are rolled and obtain rolling arrowband to molybdenum or molybdenum alloy wire, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B is for needing the width of machine-shaping finished product arrowband, and δ is the thickness of described finished product arrowband;
Step 2, adopt wire drawing machine and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201. making special die for drawing: described special die for drawing comprises outer steel sleeve (1) and is sleeved on outer steel sleeve (1) inner polycrystalline diamond or natural diamond system wire-drawing shape mould (2), and the both sides, front and back that have in the middle part of the described wire-drawing shape mould (2) with corresponding deltiod die channel of described finished product arrowband structure and described deltiod die channel all are set to horn mouth;
202. one deck lubricant is evenly smeared on the surface in described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%;
Clip from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine 203. will be coated with the rolling arrowband of lubricant, start wire drawing machine afterwards and carry out drawing, promptly obtain the finished product arrowband.
2. according to the processing method of described a kind of molybdenum of claim 1 and molybdenum alloy narrowband, it is characterized in that: the sizing section length H of special die for drawing described in the step 201 is 0.2～0.8mm.
3. according to the processing method of claim 1 or 2 described a kind of molybdenums and molybdenum alloy narrowband, it is characterized in that: the operation of rolling that in the step 1 described molybdenum or molybdenum alloy wire is rolled may further comprise the steps:
101, calculate needing the flakiness ratio of machine-shaping finished product arrowband is B/ δ and 1＜B/ δ≤100, selects total working modulus ε of selected described molybdenum when rolling or molybdenum alloy wire again according to B/ δ
Always, total working modulus ε
AlwaysBe 1～98%; The numerical value of described B/ δ is big more, total working modulus ε
AlwaysBig more;
102, according to formula Φ=δ/(1-ε
Always) calculate the diameter of phi of selected molybdenum or molybdenum alloy wire;
103, according to determined total working modulus ε in the step 101
AlwaysSelect to determine the pass reduction ε % when rolling, and corresponding definite rolling pass number, described pass reduction ε %=5%～39%;
104, adopt milling train described molybdenum or molybdenum alloy wire to be carried out the rolling back of one or more passages and obtain rolling arrowband with cold rolling, warm-rolling and hot rolling mode.
4. according to the processing method of described a kind of molybdenum of claim 3 and molybdenum alloy narrowband, it is characterized in that: when described in the step 104 molybdenum or molybdenum alloy wire being rolled, rolling temperature is the recrystallization temperature that 1～900 ℃ and rolling temperature are not higher than described molybdenum or molybdenum alloy wire.
5. according to the processing method of described a kind of molybdenum of claim 3 and molybdenum alloy narrowband, it is characterized in that: when described in the step 104 molybdenum or molybdenum alloy wire being rolled, former and later two tension motors of being installed on the described milling train act on respectively that the tension force on the unit cross-sectional area of both sides is 10～80% of described molybdenum or molybdenum alloy wire yield strength before and after described molybdenum or the molybdenum alloy wire; And the size of processed molybdenum or molybdenum alloy wire is big more, and the tension force that described former and later two tension motors act on described molybdenum or both sides, the molybdenum alloy wire front and back unit cross-sectional area is big more.
6. the processing method of molybdenum and molybdenum alloy narrowband is characterized in that this method may further comprise the steps:
Step 1, employing milling train are rolled and obtain rolling arrowband to molybdenum or molybdenum alloy wire, the width B of described rolling arrowband '=B+B * (10%～30%) and its thickness δ '=δ+δ * (5%～25%), wherein B is for needing the width of machine-shaping finished product arrowband, and δ is the thickness of described finished product arrowband; The width B of described finished product arrowband and thickness δ all≤0.3mm;
Step 2, adopt wire drawing machine and by cold-drawing process described rolling arrowband is carried out drawing, and obtain the finished product arrowband, its drawing process may further comprise the steps:
201, make special die for drawing: described special die for drawing comprises outer steel sleeve (1) and is sleeved on outer steel sleeve (1) inner polycrystalline diamond or natural diamond system wire-drawing shape mould (2), the deltiod die channel structure of made special die for drawing only need guarantee the consistent and width=0.3mm of thickness δ of its thickness and finished product arrowband, and the both sides, front and back of described deltiod die channel all are set to horn mouth; And need make the die channel diameter circular hole wire drawing die two more identical with the die channel diameter with width B than the circular hole wire drawing die one of the little 0.02～0.07mm of width B;
202, evenly smear one deck lubricant on the surface of described rolling arrowband, described lubricant is evenly mixed by transformer oil and butter and the shared mass ratio of butter is 20%～50%;
203, the rolling arrowband that will be coated with lubricant clips from the pulling-in dog that described deltiod die channel passed and sent into wire drawing machine, starts wire drawing machine afterwards and carries out drawing; Correspondingly, start in the step 203 when wire drawing machine carries out drawing and adopt a plurality of wire drawing dies that described rolling arrowband is replaced drawing, the most described rolling arrowband drawing is processed into the finished product arrowband.
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| CN103774020B (en) * | 2014-01-23 | 2016-01-20 | 安泰科技股份有限公司 | The preparation method of Mo Re alloys foil |
| CN106670729A (en) * | 2015-11-06 | 2017-05-17 | 薛根友 | Method for producing common flat key through continuous drawing and continuous rolling process |
| CN106392372B (en) * | 2016-10-28 | 2018-08-31 | 西北有色金属研究院 | A kind of preparation method of engine components sealing silver-based multicomponent alloy narrowband |
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