CN106893936B - The production method of the resonant rod of the RF device of vacuum melting invar cold-heading silk - Google Patents

The production method of the resonant rod of the RF device of vacuum melting invar cold-heading silk Download PDF

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CN106893936B
CN106893936B CN201710101979.5A CN201710101979A CN106893936B CN 106893936 B CN106893936 B CN 106893936B CN 201710101979 A CN201710101979 A CN 201710101979A CN 106893936 B CN106893936 B CN 106893936B
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temperature
cold
heading
pickling
production method
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CN106893936A (en
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荆正伟
钟静
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Danyang Kaixin Alloy Material Co Ltd
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Danyang Kaixin Alloy Material Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C22C33/06—Making ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The present invention relates to a kind of using the resonant rod of vacuum melting and electroslag remelting process cold-heading silk, and chemical component is：Nickel：35-37%, manganese：0.2-0.6%, silicon:≤ 0.3%, phosphorus：≤ 0.2%, carbon：≤ 0.05%, sulphur：≤ 0.02%, iron：Surplus.Its production method includes the following steps：1）Vacuum melting；2）Electroslag remelting；3）Forge cogging；4）Hot-roll forming；5）Crin drawing；6）Sour openpore material；7）Polishing deburring；8）Annealing；9）Pickling is examined；10）Finish draw；11）Heat treatment.Cold-heading silk in the present invention guarantees the requirement of hardness and the coefficient of expansion needed for meeting resonant rod from proportion and production method, while having good toughness, can satisfy the requirement of cold-heading processing.Processing efficiency is not only increased, the utilization rate of material is more improved, reduces the loss and manufacturing cost of product processing.The production method includes vacuum melting process, can make the H in cold-heading silk2, O gas content greatly reduce, control the formation of nonmetallic inclusion well, further improve the purity and plasticity, toughness of cold-heading silk, improve cold-heading silk material processing lumber recovery.

Description

The production method of the resonant rod of the RF device of vacuum melting invar cold-heading silk
Technical field
The present invention relates to the resonant rod of the RF device production method of invar cold-heading silk, meet resonant rod be applicable in it is required The requirement of hardness and the coefficient of expansion, and can satisfy the material and its production method of cold-heading processing, especially with respect to expansion alloy The improvement of the Ni-based 4J36 of material.
Background technique
As mobile communication business develops rapidly, RF device becomes product indispensable in the construction of communication base station, and Largely apply to resonant rod product again in RF device.Resonant rod as RF device core component, for many years because its precision is wanted It asks higher and bar is used to carry out lathe turning processing, but further develop recently as domestic and international communications industry and the country The market demand of the acceleration that communication master device quotient cracks the international market, radio-frequency devices is increasing, and currently manufactured resonant rod is equal The problem of carrying out machining to resonant rod using numerically-controlled machine tool (CNC), therefore bringing is that rapidoprint waste is serious, material benefit Only have 60%~70% with rate, and process time is longer, processing efficiency is only 30~40/hour.The processing of resonant rod is imitated Rate, which becomes, restricts the obstacle that client promotes product yield, reduces every cost.In the research and practice process to the prior art It was found that：Traditional cold-heading processing method is mainly for the manufacture of parts such as bolt, nut, iron nail, rivet and steel balls.Forging stock material can be with It is copper, aluminium, carbon steel, steel alloy, stainless steel and titanium alloy etc., stock utilization not only increases processing effect up to 80~90% Rate, more saving material, reduce cost of goods manufactured.And existing resonance bar material is due to hardness to be met and the coefficient of expansion It is required that therefore its cannot using cold-heading method carry out simultaneous manufacturing.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of producer of the resonant rod invar cold-heading silk of RF device Method, the requirement of hardness and the coefficient of expansion needed for meeting the resonant rod in RF device with acquisition, while can satisfy cold-heading processing Requirement cold-heading silk.
Inventive concept：The original 4J36 expansion alloy material composition of appropriate adjustment, incorporates new life in national standard allowed band Production method.
In order to solve the above technical problems, the cold-heading silk selects 4J36 expansion alloy material, it includes each group be divided into （Wt.% is indicated）：Nickel：35-37%, manganese：0.2-0.6%, silicon:≤ 0.3%, phosphorus：≤ 0.2%, carbon：≤ 0.05%, sulphur：≤ 0.02%, Iron：Surplus.
The production method of the cold-heading silk includes the following steps：Vacuum melting → electroslag remelting → forges cogging → hot rolling Molding → crin drawing → acid openpore material → polishing deburring → annealing → pickling test → cold drawing → heat treatment, wherein：
1）Vacuum melting：Raw material Jinchuan Ni plate, metallic silicon, Mn, the toasted rear loading Jinzhou east electric furnace of pure Fe is limited Melting is carried out in the ZGHL0.25-250-1 type vacuum induction melting furnace of company's production, increases power after melting the 70% of gross mass High speed melt, 1460-1660 DEG C of refining temperature to be achieved after fine melt（It is preferred that 1500 DEG C）Enter refining period afterwards, refining keeps 30 Minute, the refining later period turns low vacuum（103—10-1Pa）, tap within high-power stirring 1-3 minutes, pour injecting electrode.
2）Electroslag remelting：It is 1 with mass ratio：1 fluorite and titanium dioxide prepares striking agent, uses CaF2、Al2O3With CaO system Make remelting electroslag system, wherein the mass percent of three is：CaF2:65%-75%, Al2O3:15%-25%, CaO:Surplus；Dress Furnace, striking slag making, smelting, feeding, cooling, are made steel ingot base；Add when slag spoon do not allow to contact simultaneously with crystallizer, electrode bar or Slag spoon disorderly smashes the slag charge on crystallizer, and striking electric current is 500-1500A, is normally smelted again after slag fine melt, controls electric current 2500-3000A, voltage 38-41V, makes electrode melting, and until crystallizer is filled, smelting, which finishes, carries out feeding, remelted ingot Cooling de- ingot is air-cooled.
The vacuum metling process and electroslag remelting process, the ZGHL0.25-250-1 type vacuum induction melting furnace used have The degree of purity and uniform texture for improving to effect steel alloy, improve surface, the inherent quality of steel ingot, improve steel alloy Performance, further reduced the yield of nonmetallic inclusionsin steel.
3）Forge cogging：
（1）Preheating：Steel ingot base is heated to 850 DEG C by room temperature, preheats 30-50 minutes；
（2）Heating：It is warming up to 1050-1150 DEG C and turns over ingot blank, keep the temperature 40-50 minutes；
（3）Heat preservation：When reaching forging temperature, initial forging temperature >=1100 DEG C, final forging temperature >=950 DEG C.
（4）Forging：Using one weight of the second light industry bureau, steel ingot is made in two uniform maneuvers.
The forging be forge beginning tapped with lesser deflection, etc. plasticity improve after take the circumstances into consideration thump, close on Tapped again when final forging temperature, it is desirable that deformation uniformly, is avoided hitting repeatedly in same position, frequently to be turned over during forging, it is diligent into Material, each inlet amount should be less than boring width, be greater than drafts, avoid generating hammering and folding, destroy surface, influence the matter of cold-forging steel Amount.
4）Hot-roll forming：The temperature of material loading annealing furnace：≤600℃；Heating-up time >=120 minute；Heating temperature： 1100-1150℃；Soaking time：>=30 minutes, the beginning rolled temperature：≥1100℃；Finishing temperature >=950 DEG C.
Above-mentioned hot-rolled process is assembled and is adjusted to production spare part into stokehold, can avoid generating folding during the rolling process Folded or scuffing, destroys product surface, forms the crackle of cracking.
5）Crin drawing：Before operation, first carry out carrying out drawing process with plycrystalline diamond mould by deformation requirements with mould.
The crin drawing procedure, need to require according to size, select the mold of suitable pass, as follows with mold technique standard：
Unit（mm）" * " indicates annealing（Annealing temperature referring to《The heat treatment of well vacuum electric furnace（Annealing）List》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5*
The heat treatment of well vacuum electric furnace（Annealing）List
Classification State Specification mm Heating temperature DEG C Soaking time The type of cooling
Nickel-base alloy Semi-finished product >=￠ 8 800-850 >=40 minutes It is air-cooled
6）Sour openpore material：It is impregnated with sulfuric acid, salt acid rinse to white, 30-70 DEG C of pickling temperature, pickling time 20-35 points Clock.Blank pickling solution proportion：
Pickling solution proportion Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickling solution proportion Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 10-15
The pickling process, concentration are calculated with the weight of complex acid, and the blank after pickling must be embathed to be rinsed with high pressure water Completely, face crack is conveniently found out.
7）Polishing deburring：Material surface situation is checked, if any surface defect（Such as flash, foreskin, crackle）, with portable sand Wheel carries out reconditioning processing.
8）Annealing：Crin is placed in pit type annealing furnace and is made annealing treatment, temperature is at 800 DEG C -850 DEG C, keep the temperature 1-2 hour.
9）Pickling test：It is impregnated with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 points Clock.It checks material surface situation, carries out light pruning with portable grinding wheel, it is desirable that surface defect depth is no more than 0.5mm.
10）Finish draw：（1）With mould：It need to be required according to size, select the mold of suitable pass, it is as follows with mold technique standard：
Unit（mm）" * " indicates annealing（Annealing temperature referring to《The processing of well vacuum electric furnace（Annealing）List》）,
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5.
（2）Finish draw：It is every that next specification is drawn all to need to carry out pickling test, reconditioning processing.
11）Heat treatment：Silk material after cold drawing is placed in well formula argon gas protection bright annealing furnace and is heat-treated, at heat Reason temperature is air-cooled after keeping the temperature 1-2 hour at 800 DEG C -850 DEG C, discharging.
Above-mentioned annealing heat-treatment and heat treatment can improve or eliminate steel institute during casting, forging, roll etc. Caused by various tissues missing and residual stress, and refine crystal grain, it is therefore prevented that stress is concentrated, to reduce opening for cold-forging steel Probability is split, biggish deflection can be born, there is biggish elongation percentage, the contraction percentage of area, preferable plasticity and higher Toughness and intensity.
The present invention is from the adjustment of the chemical component of steel, surface defect, equipment, grain size and the rolling side for influencing cold-heading steel quality The big factor of method 4 is set out, using ZGHL0.25-250-1 type vacuum induction melting furnace effectively improve steel alloy degree of purity and Uniform texture improves surface, the inherent quality of steel ingot, improves the performance of steel alloy, reduces nonmetallic folder in steel The content of sundries and the gas content of H, O；Deoxidation, refinement crystal grain, expand the deflection of steel, elongation percentage, the contraction percentage of area, compared with Good plasticity and higher toughness and intensity；Production spare part is assembled and adjusted into stokehold, can avoid in the operation of rolling Middle generation is folded or is scratched, and destroys product surface, forms the crackle of cracking by carrying out pickling repeatedly to blank, reconditioning, moving back Fire, drawing, accomplish surface zero-fault.It is found through client's actual processing, this material is the requirement for meeting hardness and the coefficient of expansion, again Simultaneous manufacturing can be carried out using cold-heading method.Stock utilization not only increases processing efficiency, more saves up to 95% Material reduces cost of goods manufactured.
Specific embodiment
Embodiment 1
Resonant rod cold-heading silk, chemical component are（Wt.% is indicated）：Nickel：35.6%, manganese：0.35%, silicon:0.3%, phosphorus： 0.18%, carbon：0.02%, sulphur：0.015%, iron：63.535%.
Embodiment 2
Resonant rod cold-heading silk, chemical component are（Wt.% is indicated）：Nickel：36.8%, manganese：0.5%, silicon:0.28%, phosphorus： 0.10%, carbon：0.015%, sulphur：0.01%, iron：62.295%.
Embodiment 3
Resonant rod cold-heading silk, chemical component are（Wt.% is indicated）：Nickel：36.2%, manganese：0.33%, silicon:0.17%, phosphorus： 0.13%, carbon：0.021%, sulphur：0.012%, iron：63.137%.
The production method of above embodiments 1-3 includes the following steps：
1, vacuum melting：
（1）, raw material preparation：The furnace charge be Jinchuan Ni plate, metallic silicon, Mn, Ultra-low carbon and technical pure Fe material, it is toasted It is spare afterwards；
（2）, charging：Be packed into vacuum induction melting furnace it is toasted after spare Jinchuan Ni plate, metallic silicon, Mn, ultralow Carbon and technical pure Fe furnace charge；
（3）, refining：Low-power material increases power high speed melt, the refining temperature to be achieved after fine melt after melting 70% Enter refining period after 1500 DEG C, refining is kept for 30 minutes；
（4）, casting：The refining later period turns low vacuum（103—10-1Pa）, tap within high-power stirring one minute, pour injecting electrode.
2, electroslag remelting：
（1）, striking agent and remelting electroslag system allotment：It is 1 with mass ratio：1 fluorite and titanium dioxide prepares striking agent, Use CaF2、Al2O3Remelting electroslag system is made with CaO；
（2）, shove charge：Chassis, striking agent, crystallizer and electrode are installed, fill necessary first water flowing before crystallizer, and check Whether there is or not drainage, try to get to the heart of a matter on pad powder and crystallizer between must be tight, pad powder inner ring will be justified as far as possible, water tank face will dry, Completely, striking agent is put, to guarantee its electric conductivity；
（3）, striking slag making：Reducing electrode contacts electrode with striking agent, completes striking work, melts striking agent, add Enter remelting electroslag system；
（4）, smelt：Spoon when slag is added not allow disorderly to smash the slag on crystallizer with crystallizer, electrode bar while contact or slag spoon Material, striking electric current are 500-1500A, are normally smelted again after slag fine melt, control electric current 2500-3000A, voltage 38-41V, Make electrode melting, until crystallizer is filled；
（5）, feeding it is cooling：Smelting, which finishes, carries out feeding, and feeding electric current gradually becomes smaller, and until current value becomes 0, mends The contracting time 3-5 minutes, electrode, which was lifted off electroslag face 3cm or more, to have a power failure, and remelted ingot cools down 30 points in a crystallizer It is air-cooled that ingot is taken off after clock.
3, cogging is forged：（1）, preheating：Steel ingot base is heated to 850 DEG C by room temperature, answers slow heat, and preheating 30-50 divides Clock；
（2）, heating：Steel nail base quickly heats to 1050-1150 DEG C, frequently turns over ingot blank, makes its equalizing temperature, heat preservation 40-50 minutes；
（3）, heat preservation：Reaching and is kept the temperature when forging temperature, heat preservation is forged for 20 minutes, and initial forging temperature is 1100 DEG C, Final forging temperature is 950 DEG C.
（4）, forging：Forging uses one weight of the second light industry bureau, and steel ingot is made in two uniform maneuvers.It forges before starting and answers in the process In time cleaning surface clinker, rubbish etc., first tapped with lesser deflection, etc. plasticity improve after take the circumstances into consideration thump, close on Tapped again when final forging temperature, it is desirable that deformation uniformly, is avoided hitting repeatedly in same position, frequently to be turned over during forging, it is diligent into Material, each inlet amount should be less than boring width, be greater than drafts, avoid generating hammering and folding, destroy surface, influence the matter of cold-forging steel Amount.
4, hot-roll forming：
（1）, material be packed into annealing furnace temperature：≤600℃；
（2）, heating-up time >=120 minute；
（3）, heating temperature：1100-1150℃；
（4）, soaking time：>=30 minutes；
（5）, begin roll temperature：≥1100℃；
（6）, finishing temperature >=950 DEG C.
Production spare part is assembled and adjusted into stokehold, can avoid generating folding during the rolling process or scratch, destroy Product surface forms the crackle of cracking.
5, crin drawing：（1）, wire drawing skidding technique requirement：Before operation, parcel is first put into prepared lubricant（See Table -1）In be lubricated, be sufficiently stirred, coating uniform.Parcel after lubrication should uniformly be spread out, carried out solarization and dried or dry.
Lubricant formulation ratio
Raw material title Technical requirements Quantity（kg）
Graphite powder 200-300# 50
Machine oil 20# 50
Soap 5
Lime 10
Water 500
Table -1
（2）, with mold technique requirement：It need to be required according to size, select the mold of suitable pass, it is as follows with mold technique standard：
Unit（mm）" * " indicates annealing（Annealing temperature referring to《The heat treatment of well vacuum electric furnace（Annealing）List》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5
The heat treatment of well vacuum electric furnace（Annealing）List
Classification State Specification mm Heating temperature DEG C Soaking time The type of cooling
Nickel-base alloy Semi-finished product >=￠ 8 800-850 >=40 minutes It is air-cooled
6, sour openpore material：After checking material trademark, submerged being put into pickling tube after the scattered bundle of material, pickling concentration is with complex acid Weight calculate, with sulfuric acid impregnate, salt acid rinse to white, 30-70 DEG C of pickling temperature, pickling time 20-35 minutes, after pickling Blank must embathe with high pressure water flushing wash clean, dry, conveniently find out face crack.
Blank pickling solution proportion：
Pickling solution proportion Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickling solution proportion Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 10-15
7, polishing deburring：Material surface situation is checked, if any surface defect（Such as flash, foreskin, crackle）, with portable sand Wheel carries out reconditioning processing, pays attention to good protection tool.
8, it makes annealing treatment：Crin is placed in well annealing furnace and is made annealing treatment, temperature is protected at 800 DEG C -850 DEG C Warm 1-2 hour.
9, pickling test：It is impregnated with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 points Clock.It checks material surface situation, carries out light pruning with portable grinding wheel, it is desirable that surface defect depth is no more than 0.5mm.
Pickling solution proportion Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 3-15
Pickling solution proportion Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 5-10
10, finish draw：
（1）, wire drawing skidding technique requirement：Before operation, parcel is first put into prepared lubricant（It is shown in Table -1）Middle progress Lubrication, is sufficiently stirred, coating uniform.Parcel after lubrication should uniformly be spread out, carried out solarization and dried or dry.
With mold technique requirement：It need to be required according to size, select the mold of suitable pass, it is as follows with mold technique standard：
Unit（mm）" * " indicates annealing（Annealing temperature referring to《The processing of well vacuum electric furnace（Annealing）List》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5
（2）, finish draw：It is every that next specification is drawn all to need to carry out pickling test, reconditioning processing.
11, it is heat-treated：Silk material after cold drawing is placed in well formula argon gas protection bright annealing furnace and is heat-treated, at heat Reason temperature is air-cooled after keeping the temperature 1-2 hour at 800 DEG C -850 DEG C, discharging.
Resonant rod produced by the invention cold-heading silk, that is, the requirement of hardness needed for meeting resonant rod and the coefficient of expansion, It can satisfy the requirement of cold-heading processing again simultaneously.We from influence cold-heading steel quality steel chemical component, surface defect, equipment Adjustment, grain size and the big factor of milling method 4 are set out, and are effectively improved using ZGHL0.25-250-1 type vacuum induction melting furnace The degree of purity and uniform texture of steel alloy, improve surface, the inherent quality of steel ingot, improve the performance of steel alloy, Reduce the content of nonmetallic inclusionsin steel and the gas content of H, O；Production spare part is assembled and is adjusted into stokehold, It avoids generating folding or scuffing during the rolling process as far as possible, destroys product surface；Using well formula argon gas protect bright annealing furnace into Row deoxidation, refinement crystal grain expand deflection, elongation percentage, the contraction percentage of area, preferable plasticity and the higher toughness of steel and strong Degree；The crackle of cracking is formed by pickling, reconditioning, annealing, drawing to blank progress repeatedly, accomplishes surface zero-fault, effectively The lumber recovery that ensure that cold-heading silk.

Claims (1)

1. a kind of production method of the resonant rod of RF device invar cold-heading silk, it is characterised in that：
The mass percent for each ingredient that the cold-heading silk includes is：Nickel：35-37%, manganese：0.2-0.6%, silicon:≤ 0.3%, phosphorus： ≤ 0.2%, carbon：≤ 0.05%, sulphur：≤ 0.02%, iron：Surplus；
The production method of the cold-heading silk, includes the following steps：
1）Vacuum melting：Ni plate, metallic silicon, Mn, pure Fe are fitted into vacuum induction melting furnace and carry out melting, melts gross mass 70% after increase power high speed melt, it is 1500 DEG C of refining temperature to be achieved after fine melt after enter refining period, refining keep 30 points Clock, refining later period turn low vacuum to 103—10-1Pa stirs 1 minute and taps, pours injecting electrode；
2）Electroslag remelting：It is 1 with mass ratio：1 fluorite and titanium dioxide prepares striking agent, uses CaF2、Al2O3It is made with CaO Remelting electroslag system, wherein the mass percent of three is：CaF2:65%-75%, Al2O3:15%-25%, CaO:Surplus；Dress Furnace, striking slag making, smelting, feeding, cooling, are made steel ingot base；Wherein, the step of smelting is：Add when slag spoon do not allow and Crystallizer, electrode bar contact simultaneously or slag spoon disorderly smashes the slag charge on crystallizer, and striking electric current is 500-1500A, after slag fine melt again It is normally smelted, controls electric current 2500-3000A, voltage 38-41V makes electrode melting, until crystallizer is filled；
3）Hammer cogging：Steel ingot base is heated to 850 DEG C by room temperature, preheats 30-50 minutes；It is warming up to 1000-1150 DEG C, heat preservation 40-50 minutes；Reach forging temperature, initial forging temperature >=1100 DEG C, final forging temperature >=950 DEG C；
4）Hot-roll forming：The temperature of material loading annealing furnace：≤600℃；Heating-up time >=120 minute；Heating temperature：1000- 1150℃；Soaking time：>=30 minutes, the beginning rolled temperature：≥1100℃；Finishing temperature >=950 DEG C；
5）Crin drawing：Before operation, first carry out carrying out drawing process with plycrystalline diamond mould by deformation requirements with mould；
6）Sour openpore material：It is impregnated with sulfuric acid, salt acid rinse to white, 30-70 DEG C of pickling temperature, pickling time 20-35min；Acid Blank after washing embathed with high pressure water flushing wash clean, dry；
7）Polishing deburring：It checks material surface situation, and reconditioning processing is carried out to surface defect；
8）Annealing：Temperature is made annealing treatment at 800 DEG C -850 DEG C, keeps the temperature 1-2 hour；
9）Pickling test：It is impregnated with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15min；It checks Material surface situation carries out artificial reconditioning with portable grinding wheel, it is desirable that surface defect depth is no more than 0.5mm；
10）Finish draw after lubrication；
11）Heat treatment：Heat treatment temperature is air-cooled after keeping the temperature 1-2 hour at 800 DEG C -850 DEG C, discharging.
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