CN105316575B - Cold-heading wire for resonance rod and production method thereof - Google Patents

Cold-heading wire for resonance rod and production method thereof Download PDF

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Publication number
CN105316575B
CN105316575B CN201410255425.7A CN201410255425A CN105316575B CN 105316575 B CN105316575 B CN 105316575B CN 201410255425 A CN201410255425 A CN 201410255425A CN 105316575 B CN105316575 B CN 105316575B
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temperature
cold
heading
production method
pickling
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CN105316575A (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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Priority to CN201710308108.0A priority Critical patent/CN107130182A/en
Priority to CN201710308109.5A priority patent/CN107043891B/en
Priority to CN201710307825.1A priority patent/CN107022720A/en
Priority to CN201410255425.7A priority patent/CN105316575B/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
    • 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
    • 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
    • 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
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a cold-heading wire for a resonance rod and a production method thereof. The cold-heading wire includes the following chemical components: 35-37% of Ni, 0.2-0.6% of Mn, not more than 0.3% of Si, not more than 0.2% of P, not more than 0.05% of C, not more than 0.02% of S and the balanced being Fe. The production method includes the following steps: 1) vacuum smelting; 2) electro-slag re-melting; 3) forging and cogging-down; 4) hot-roll moulding; 5) thick wire drawing; 6) acidic-white blank treatment; 7) grinding and edge trimming; 8) annealing treatment; 9) acid-pickling inspection; 10) fine drawing and 11) heat treatment. The cold-heading wire can satisfy demands on hardness and expansion coefficient of the resonance rod on the basis of proportion and production cost and meanwhile has excellent toughness, thereby satisfying processing requirement of cold heading. The production method not only improves processing efficiency but also increases material utilization rate, so that product processing loss and preparation cost are reduced. The production method includes the vacuum smelting process so that contents of H2, O2 and such gases are greatly reduced in the cold-heading wire, so that formation of non-metal impurities are controlled well and further the cold-heading wire is improved in purity, plasticity and toughness and is improved in process yield.

Description

Resonant rod cold-heading silk and its production method
Technical field
The present invention relates to the resonant rod of radio-frequency (RF) device invar cold-heading silk and its production method, meet that resonant rod is suitable for is required Hardness and the coefficient of expansion requirement, and disclosure satisfy that material and its production method that cold-heading processes, close especially with respect to expansion The improvement of the Ni-based 4J36 of golden material.
Background technology
As mobile communication business is developed rapidly, radio-frequency (RF) device becomes product indispensable in the construction of communication base station, and In radio-frequency (RF) device again resonant rod product is applied in a large number.Resonant rod as radio-frequency (RF) device core component, for many years because its precision will Ask higher and lathe turning processing is carried out using bar, but further develop recently as domestic and international communications industry and domestic The acceleration that communication master device business cracks the international market, the market demand of radio-frequency devices is increasing, and currently manufactured resonant rod is equal Machining is carried out to resonant rod using Digit Control Machine Tool (CNC), therefore the problem brought is that rapidoprint is wasted seriously, material profit Only have 60%～70% with rate, and process time is longer, and working (machining) efficiency is only 30～40/hour.Resonant rod plus work efficiency Rate becomes restriction client's improving product yield, reduces the obstacle of every cost.In the research and practice process to 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, aluminum, carbon steel, steel alloy, rustless steel and titanium alloy etc., stock utilization is not only increased plus work efficiency up to 80～90% Rate, more material-saving, reduce cost of goods manufactured.And existing resonance bar material is due to meeting hardness and the coefficient of expansion Require, therefore it can not carry out simultaneous manufacturing using cold-heading method.
The content of the invention
The technical problem to be solved in the present invention be provide a kind of hardness needed for the resonant rod met in radio-frequency (RF) device with it is swollen The requirement of swollen coefficient, while disclosure satisfy that the cold-heading silk and its production method of the requirement that cold-heading is processed.
Original 4J36 expansion alloys material composition is suitably adjusted in GB allowed band, new production method is incorporated.Tool Gymnastics is made as follows：From 4J36 expansion alloy materials, its chemical composition is（Wt.% is represented）：Nickel：35-37%, manganese：0.2-0.6%, Silicon:≤ 0.3%, phosphorus：≤ 0.2%, carbon：≤ 0.05%, sulfur：≤ 0.02%, ferrum：Surplus.
Its production method is comprised the following steps：Vacuum melting → electroslag remelting → forge cogging → hot-roll forming → crin Drawing → acid openpore material → polishing deburring → annealing → pickling test → cold drawn → heat treatment, wherein：
1）Vacuum melting：By the toasted rear loading Jinzhou of raw material Jinchuan Ni plates, metallic silicon, Mn, Ultra-low carbon and technical pure Fe Melting is carried out in the ZGHL0.25-250-1 type vacuum induction melting furnaces of east electric furnace company limited production, is increased after melting 70% Power high speed melt, refining temperature 1460-1660 DEG C to be achieved after fine melt（It is preferred that 1500 DEG C）Refining period is entered afterwards, and refine is protected Hold 30 minutes, the refine later stage turns coarse vacuum（103—10-1Pa）, high-power stirring one minute taps, and pours injecting electrode.
2）Electroslag remelting：It is 0.9 with mass ratio：1 to 1.1：1 fluorite prepares striking agent with titanium dioxide, uses mass ratio Respectively 7:2:1 CaF2、Al2O3Remelting electroslag system is made with CaO；Shove charge, striking slag making, smelting, feeding, cooling, make steel Ingot blank；Plus spoon does not allow the slag charge for contacting with crystallizer, electrode bar or slag spoon is disorderly smash on crystallizer, striking electric current to be during slag simultaneously 500-1500A, is normally smelted again, control electric current 2500-3000A after slag fine melt, and voltage 38-41V makes electrode melting, directly To crystallizer is filled, smelting finishes carries out feeding, the de- ingot air cooling of remelted ingot cooling.
The vacuum metling operation and electroslag remelting operation, the ZGHL0.25-250-1 type vacuum induction melting furnaces for using have The degree of purity and uniform texture of steel alloy are improve to effect, surface, the inherent quality of steel ingot is improved, steel alloy is improved Performance, reduce further 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）Heat up：It is warmed up to 1050-1150 DEG C and turns over ingot blank, is incubated 40-50 minutes；
（3）Insulation：When reaching forging temperature, initial forging temperature >=1100 DEG C, final forging temperature >=950 DEG C.
（4）Forging：Using the weight of the second light industry bureau one, two uniform maneuvers make steel ingot.
Described forging is to forge beginning to be touched with less deflection, is thumped as one sees fit after improving etc. plasticity, is closed on Touch again during final forging temperature, it is desirable to which deformation is uniform, it is to avoid clashes into repeatedly in same position, wants duty to stand up during forging, duty is entered Material, each inlet amount should be less than boring wide, more than drafts, it is to avoid produce hammering and folding, destroy surface, affect the matter of cold-forging steel Amount.
4）Hot-roll forming：Material loads the temperature of annealing furnace：≤600℃；Heating-up time >=120 minute；Heating-up temperature： 1100-1150℃；Temperature retention time：>=30 minutes, the beginning rolled temperature：≥1100℃；Finishing temperature >=950 DEG C.
Above-mentioned hot-rolled process, enters stokehold and production spare part is assembled and adjusted, and can avoid producing folding in the operation of rolling Folded or scuffing, destroys product surface, forms the crackle of cracking.
5）Crin drawing：Before operation, first carry out, with mould, drawing process being carried out with glomerocryst mould by deformation requirements.
The crin drawing procedure, according to dimensional requirement, need to select the mould of suitable pass, as follows with mold technique standard：
Unit（mm）" * " represents annealing（Annealing temperature referring to《Well vacuum electric furnace heat treatment（Annealing）Catalog》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5*
Well vacuum electric furnace heat treatment（Annealing）Catalog
Classification State Specification mm Heating-up temperature DEG C Temperature retention time The type of cooling
Nickel-base alloy Semi-finished product >=￠ 8 800-850 >=40 minutes Air cooling
6）Sour openpore material：With soak with sulphuric acid, salt acid rinse to white, 30-70 DEG C of pickling temperature, pickling time 20-35 point Clock.Blank pickle proportioning：
Pickle proportioning Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickle proportioning Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 10-15
Described pickling process, concentration is calculated with the weight of complex acid, and the blank after pickling must embathe and high pressure water washing Totally, face crack is conveniently found out.
7）Polishing deburring：Material surface situation is checked, if any surface defect（Such as burr, foreskin, crackle）, use portable sand Wheel carries out reconditioning process.
8）Annealing：Crin is placed in pit type annealing furnace and is made annealing treatment, temperature is at 800 DEG C -850 DEG C, it is incubated 1-2 hour.
9）Pickling test：With soak with sulphuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 point Clock.Material surface situation is checked, with portable emery wheel light pruning is carried out, it is desirable to which surface defect depth is less than 0.5mm.
10）Finish draw：（1）With mould：According to dimensional requirement, the mould of suitable pass need to be selected, it is as follows with mold technique standard：
Unit（mm）" * " represents annealing（Annealing temperature referring to《The process of well vacuum electric furnace（Annealing）Catalog》）,
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5.
（2）Finish draw：Next specification is often drawn all to need to carry out pickling test, reconditioning is processed.
11）Heat treatment：Silk material after will be cold drawn is placed in well formula argon protection bright annealing furnace and carries out heat treatment, at heat At 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation discharges reason temperature.
Above-mentioned annealing heat-treats and heat treatment, can improve or eliminate steel casting, during forging, roll etc. institute The various tissues disappearance for causing and residual stress, and crystal grain thinning, it is therefore prevented that stress concentration, so as to reduce opening for cold-forging steel Probability is split, larger deflection can be born, with larger elongation percentage, the contraction percentage of area, preferable plasticity and higher Toughness and intensity.
The present invention is from the chemical composition of steel, surface defect, equipment adjustment, grain size and the rolling side for affecting cold-heading steel quality The big factor of method 4 is set out, using ZGHL0.25-250-1 type vacuum induction melting furnaces be effectively improved 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 debris and the gas content of H, O；Deoxidation, crystal grain thinning, expand the deflection of steel, elongation percentage, the contraction percentage of area, compared with Plasticity well and higher toughness and intensity；Enter stokehold production spare part is assembled and adjusted, can avoid in the operation of rolling Middle generation folds or scratches, and destroys product surface, forms the crackle of cracking by pickling repeatedly, reconditioning being carried out to blank, being moved back Fire, drawing, accomplish surface zero-fault.Jing client's reality processing finds that this material meets the requirement of hardness and the coefficient of expansion, and Simultaneous manufacturing can be carried out using cold-heading method.Stock utilization not only increases working (machining) efficiency up to 95%, more saves Material, reduces cost of goods manufactured.
Specific embodiment
Embodiment 1
Resonant rod cold-heading silk, its chemical composition is（Wt.% is represented）：Nickel：35.6%, manganese：0.35%, silicon:0.3%, phosphorus： 0.18%, carbon：0.02%, sulfur：0.015%, ferrum：63.535%.
Embodiment 2
Resonant rod cold-heading silk, its chemical composition is（Wt.% is represented）：Nickel：36.8%, manganese：0.5%, silicon:0.28%, phosphorus： 0.10%, carbon：0.015%, sulfur：0.01%, ferrum：62.295%.
Embodiment 3
Resonant rod cold-heading silk, its chemical composition is（Wt.% is represented）：Nickel：36.2%, manganese：0.33%, silicon:0.17%, phosphorus： 0.13%, carbon：0.021%, sulfur：0.012%, ferrum：63.137%.
The production method of above example 1-3 is comprised the following steps：
1st, vacuum melting：
（1）, raw material prepare：The furnace charge be Jinchuan Ni plates, metallic silicon, Mn, Ultra-low carbon and technical pure Fe material, it is toasted It is standby afterwards；
（2）, charging：Load in vacuum induction melting furnace it is toasted after standby Jinchuan Ni plates, metallic silicon, Mn, ultralow Carbon and technical pure Fe furnace charge；
（3）, refine：Low-power material, adds high-power high speed melt, the refining temperature to be achieved after fine melt after melting 70% Refining period is entered after 1500 DEG C, refine is kept for 30 minutes；
（4）, cast：The refine later stage turns coarse vacuum（103—10-1Pa）, high-power stirring one minute taps, and pours injecting electrode.
2nd, electroslag remelting：
（1）, striking agent and the allotment of remelting electroslag system：It is 1 with mass ratio：1 fluorite prepares striking agent with titanium dioxide, Use CaF2、Al2O3Remelting electroslag system is made with CaO；
（2）, shove charge：Chassis, striking agent, crystallizer and electrode are installed, necessary elder generation water flowing before dress crystallizer, and checked Whether there is 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 be dried, Totally, striking agent is put, to ensure its electric conductivity；
（3）, striking slag making：Reducing electrode makes electrode contact with striking agent, completes striking work, melts striking agent, plus Enter remelting electroslag system；
（4）, smelt：Plus spoon does not allow the slag for contacting with crystallizer, electrode bar or slag spoon is disorderly smash on crystallizer during slag simultaneously Material, striking electric current is 500-1500A, is normally smelted again after slag fine melt, control electric current 2500-3000A, voltage 38-41V, Electrode melting is made, till crystallizer is filled；
（5）, feeding cooling：Smelting finishes carries out feeding, and feeding electric current is tapered into, and till current value is changed into 0, mends 3-5 minutes contracting time, electrode is lifted off more than electroslag face 3cm to have a power failure, remelted ingot cools down in a crystallizer 30 points Ingot air cooling is taken off after clock.
3rd, cogging is forged：（1）, preheating：Steel ingot base is heated to 850 DEG C by room temperature, answers slow heat, 30-50 point of preheating Clock；
（2）, heat up：Steel nail base quickly heats to 1050-1150 DEG C, and duty turns over ingot blank so as to equalizing temperature, insulation 40-50 minutes；
（3）, insulation：Reach and be incubated when forging temperature, insulation is forged for 20 minutes, initial forging temperature is 1100 DEG C, Final forging temperature is 950 DEG C.
（4）, forging：Forging adopts the weight of the second light industry bureau one, two uniform maneuvers to make steel ingot.Forging should with during before beginning In time slag, the rubbish on cleaning surface etc., are first touched with less deflection, are thumped as one sees fit after improving etc. plasticity, are closed on Touch again during final forging temperature, it is desirable to which deformation is uniform, it is to avoid clashes into repeatedly in same position, wants duty to stand up during forging, duty is entered Material, each inlet amount should be less than boring wide, more than drafts, it is to avoid produce hammering and folding, destroy surface, affect the matter of cold-forging steel Amount.
4th, hot-roll forming：
（1）, material load annealing furnace temperature：≤600℃；
（2）, heating-up time >=120 minute；
（3）, heating-up temperature：1100-1150℃；
（4）, temperature retention time：>=30 minutes；
（5）, begin roll temperature：≥1100℃；
（6）, finishing temperature >=950 DEG C.
Enter stokehold production spare part is assembled and adjusted, can avoid producing folding in the operation of rolling or scratch, destruction Product surface, forms the crackle of cracking.
5th, crin drawing：（1）, wire drawing skidding technological requirement：Before operation, parcel is first put into the lubricant for preparing（See Table -1）In be lubricated, be sufficiently stirred for, coating uniform.Parcel after lubrication should uniformly be spread out, carry out Exposure to Sunlight and dry or dry.
Lubricant formulation ratio
Raw material title Technical requirements Quantity（kg）
Graphite powder 200-300# 50
Machine oil 20# 50
Soap 5
Calx 10
Water 500
Table -1
（2）, with mold technique require：According to dimensional requirement, the mould of suitable pass need to be selected, it is as follows with mold technique standard：
Unit（mm）" * " represents annealing（Annealing temperature referring to《Well vacuum electric furnace heat treatment（Annealing）Catalog》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5
Well vacuum electric furnace heat treatment（Annealing）Catalog
Classification State Specification mm Heating-up temperature DEG C Temperature retention time The type of cooling
Nickel-base alloy Semi-finished product >=￠ 8 800-850 >=40 minutes Air cooling
6th, sour openpore material：After verification material trademark, material is dissipated and be put into submergence in pickling tube after bundle, pickling concentration is with complex acid Weight calculate, with soak with sulphuric acid, 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 pickle proportioning：
Pickle proportioning Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickle proportioning Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 10-15
7th, polishing deburring：Material surface situation is checked, if any surface defect（Such as burr, foreskin, crackle）, use portable sand Wheel carries out reconditioning process, notes with good protection tool.
8th, make 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.
9th, pickling test：With soak with sulphuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 point Clock.Material surface situation is checked, with portable emery wheel light pruning is carried out, it is desirable to which surface defect depth is less than 0.5mm.
Pickle proportioning Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 3-15
Pickle proportioning Concentration % Temperature DEG C Time
H2SO4:HNO3:NaCl:H2O=4:1:1:Surplus 30 50-70 5-10
10th, finish draw：
（1）, wire drawing skidding technological requirement：Before operation, parcel is first put into the lubricant for preparing（It is shown in Table -1）In carry out Lubrication, is sufficiently stirred for, coating uniform.Parcel after lubrication should uniformly be spread out, carry out Exposure to Sunlight and dry or dry.
Require with mold technique：According to dimensional requirement, the mould of suitable pass need to be selected, it is as follows with mold technique standard：
Unit（mm）" * " represents annealing（Annealing temperature referring to《The process of well vacuum electric furnace（Annealing）Catalog》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5
（2）, finish draw：Next specification is often drawn all to need to carry out pickling test, reconditioning is processed.
11st, heat treatment：Silk material after will be cold drawn is placed in well formula argon protection bright annealing furnace and carries out heat treatment, at heat At 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation discharges reason temperature.
With the resonant rod cold-heading silk of present invention production, that is, meet the requirement of the hardness needed for resonant rod and the coefficient of expansion, Disclosure satisfy that the requirement that cold-heading is processed again simultaneously.We from affect cold-heading steel quality steel chemical composition, 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 furnaces The degree of purity and uniform texture of steel alloy, improves surface, the inherent quality of steel ingot, improves the performance of steel alloy, Reduce the content of nonmetallic inclusionsin steel and the gas content of H, O；Enter stokehold production spare part is assembled and adjusted, Avoid being produced in the operation of rolling as far as possible and fold or scratch, destroy product surface；Entered using well formula argon protection bright annealing furnace Row deoxidation, crystal grain thinning, expand the deflection of steel, elongation percentage, the contraction percentage of area, preferable plasticity and higher toughness and strong Degree；The crackle of cracking is formed by carrying out pickling, reconditioning, annealing, drawing repeatedly to blank, accomplishes surface zero-fault, effectively The lumber recovery that ensure that cold-heading silk.

Claims (1)

1. a kind of resonant rod production method of cold-heading silk, the mass percent of each chemical composition that resonant rod cold-heading silk includes For：Nickel：35-37%, manganese：0.2-0.6%, silicon:≤ 0.3%, phosphorus：≤ 0.02%, carbon：≤ 0.05%, sulfur：≤ 0.02%, ferrum：Surplus；
Characterized in that, the described resonant rod production method of cold-heading silk, comprises the following steps：
1）Vacuum melting：By Ni plates, metallic silicon, Mn, Ultra-low carbon technical pure Fe it is toasted after, be fitted in vacuum induction melting furnace Row melting, enters refining period after fine melt after refining temperature 1460-1660 DEG C to be achieved, refine is kept at least 30 minutes, refine Later stage turns coarse vacuum, and high-power stirring is tapped for one minute, pours injecting electrode；
2）Electroslag remelting：It is 0.9 with mass ratio：1 to 1.1：1 fluorite prepares striking agent with titanium dioxide, is 7 with mass ratio: 2:1 CaF2、Al2O3Remelting electroslag system is made with CaO；Shove charge, striking slag making, smelting, feeding, cooling, make steel ingot base；Draw Arc current is 500-1500A, is normally smelted again after slag fine melt, control electric current 2500-3000A, and voltage 38-41V makes electrode Fusing, till crystallizer is filled, smelting finishes carries out feeding, the de- ingot air cooling of remelted ingot cooling；
3）Hammer cogging：Steel ingot base is heated to 850 DEG C by room temperature, preheats 30-50 minutes；1000-1150 DEG C is warmed up to, insulation 40-50 minutes；Reach forging temperature, initial forging temperature >=1100 DEG C, final forging temperature >=950 DEG C；Using the weight of the second light industry bureau one, two is uniform Maneuver makes steel ingot；
4）Hot-roll forming：Material loads the temperature of annealing furnace：≤600℃；Heating-up time >=120 minute；Heating-up temperature：1000- 1150℃；Temperature retention time：>=30 minutes, the beginning rolled temperature：≥1180℃；Finishing temperature >=950 DEG C；
5）Crin drawing：Before operation, first carry out, with mould, drawing process being carried out with glomerocryst mould by deformation requirements；
6）Sour openpore material：With soak with sulphuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 20-30min；
7）Polishing deburring：Material surface situation is checked, and reconditioning process is carried out to surface defect；
8）Annealing：Blank is placed in pit type annealing furnace and is made annealing treatment, temperature is protected at 800 DEG C -850 DEG C Warm 1-2 hour；
9）Pickling test：With soak with sulphuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 20-30min；Inspection Material surface situation is looked into, with portable emery wheel artificial reconditioning is carried out, it is desirable to which surface defect depth is less than 0.5mm；
10）Finish draw：
（1）With mould：According to dimensional requirement, the mould of suitable pass need to be selected；
（2）Finish draw：Next specification is often drawn all to need to carry out pickling test, reconditioning is processed；
11）Heat treatment：Silk material after will be cold drawn is placed in well formula argon protection bright annealing furnace and carries out heat treatment, heat treatment temperature At 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation discharges degree.
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