CN107130182A - A kind of stock utilization higher resonant rod cold-heading silk - Google Patents

A kind of stock utilization higher resonant rod cold-heading silk Download PDF

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CN107130182A
CN107130182A CN201710308108.0A CN201710308108A CN107130182A CN 107130182 A CN107130182 A CN 107130182A CN 201710308108 A CN201710308108 A CN 201710308108A CN 107130182 A CN107130182 A CN 107130182A
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temperature
cold
heading
pickling
annealing
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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
    • 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)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The present invention relates to a kind of stock utilization higher resonant rod cold-heading silk, its chemical composition is：Nickel：35.6%, manganese：0.35%, silicon:0.3%, phosphorus：0.18%, carbon：0.02%, sulphur：0.015%, iron：Surplus.Its production method comprises 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 from proportioning and production method guarantee to meet resonant rod needed for hardness and the coefficient of expansion requirement, while having good toughness, disclosure satisfy that the requirement that cold-heading is processed.Find that this material is the requirement for meeting hardness and the coefficient of expansion through client's actual processing, and simultaneous manufacturing can be carried out using cold-heading method.Stock utilization not only increases processing efficiency up to 95%, more saves material, reduces cost of goods manufactured.

Description

A kind of stock utilization higher resonant rod cold-heading silk
Technical field
The present invention relates to the resonant rod of RF device with invar cold-heading silk and its production method, meet resonant rod be applicable it is required Hardness and the coefficient of expansion requirement, and disclosure satisfy that cold-heading processing material and its production method, especially with respect to expansion close The golden Ni-based 4J36 of material improvement.
Background technology
As mobile communication business is developed rapidly, RF device product indispensable in the construction as communication base station, and Resonant rod product is largely applied in RF device again.Resonant rod as RF device core component, for many years because its precision will Ask higher and use bar to carry out lathe turning processing, but further develop and domestic recently as domestic and international communications industry 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 serious, the material profit that the problem of bring is that rapidoprint is wasted Only have 60%~70% with rate, and process time is longer, and processing efficiency is only 30~40/hour.The processing effect of resonant rod Rate turns into restriction client's lifting product yield, the obstacle of the every cost of reduction.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, aluminium, carbon steel, steel alloy, stainless steel and titanium alloy etc., stock utilization not only increases processing effect up to 80~90% Rate, more saves material, reduces 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 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 to provide a kind of hardness needed for the resonant rod met in 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 of cold-heading processing.
Original 4J36 expansion alloys material composition is suitably adjusted in national standard 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%, sulphur：≤ 0.02%, iron：Surplus.
Its production method comprises the following steps：Vacuum melting → electroslag remelting → forges cogging → hot-roll forming → crin Drawing → acid openpore material → polishing deburring → annealing → pickling test → cold drawn → heat treatment, wherein：
1）Vacuum melting：By raw material Jinchuan Ni plates, metallic silicon, Mn, Ultra-low carbon and the toasted rear loading Jinzhou east of technical pure Fe Melting is carried out in the ZGHL0.25-250-1 type vacuum induction melting furnaces of electric furnace Co., Ltd production, power is increased after melting 70% High speed melt, 1460-1660 DEG C of the 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 stage turns low 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, are made steel Ingot blank；Plus spoon does not allow with crystallizer, electrode bar while contacting or the random slag charge smash on crystallizer of slag spoon during slag, striking electric current is Normally smelted again after 500-1500A, slag fine melt, control electric current 2500-3000A, voltage 38-41V makes electrode melting, directly Untill crystallizer is filled, smelting, which finishes, carries out feeding, the de- ingot air cooling of remelted ingot cooling.
The vacuum metling process and electroslag remelting process, the ZGHL0.25-250-1 type vacuum induction melting furnaces used have The degree of purity and uniform texture of steel alloy are improved 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）Heating：It is warming 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, steel ingot is made in two uniform maneuvers.
Described forging is to forge beginning to be touched with less deflection, takes the circumstances into consideration to thump after improving etc. plasticity, closes on Touched again during final forging temperature, it is desirable to which deformation is uniform, it is to avoid is hit 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, destroys surface, influences 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℃；Soaking 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, 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 matching somebody with somebody mould, drawing process is carried out with glomerocryst mould by deformation requirements.
The crin drawing procedure, need to be required according to size, select the mould of suitable pass, as follows with mold technique standard：
Unit（mm）" * " represents annealing（Annealing temperature referring to《Well vacuum electric furnace is heat-treated（Annealing）List》）
￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5*
Well vacuum electric furnace is heat-treated（Annealing）List
Classification State Specification mm Heating-up temperature DEG C Soaking time The type of cooling
Nickel-base alloy Semi-finished product >=￠ 8 800-850 >=40 minutes Air cooling
6）Sour openpore material：Soaked with sulfuric acid, salt acid rinse to white, 30-70 DEG C of pickling temperature, pickling time 20-35 minutes. Blank pickle is matched：
Pickle is matched Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickle is matched 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, the blank after pickling must embathe with high pressure water flushing wash clean, Conveniently find out face crack.
7）Polishing deburring：Material surface situation is checked, if any surface defect（Such as flash, foreskin, crackle）, use portable sand Wheel carries out reconditioning processing.
8）Annealing：Crin is placed in pit type annealing furnace and made annealing treatment, temperature is at 800 DEG C -850 DEG C, it is incubated 1-2 hour.
9）Pickling test：Soaked with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 points Clock.Material surface situation is checked, light pruning is carried out with portable emery wheel, it is desirable to which 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 mould of suitable pass, it is as follows with mold technique standard：
Unit（mm）" * " represents 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：Next specification is often drawn all to need to carry out pickling test, reconditioning processing.
11）Heat treatment：Silk material after will be cold drawn is placed in well formula argon gas protection bright annealing furnace and is heat-treated, heat treatment temperature Degree is at 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation, discharging.
Above-mentioned annealing heat-treats and heat treatment, can improve or eliminate steel casting, forge, roll etc. during institute The various tissues missing and residual stress caused, 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.
Chemical composition, surface defect, equipment adjustment, grain size and the rolling side of steel of the invention from influence 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 H, O gas content；Deoxidation, crystal grain thinning, expand the deflection of steel, elongation percentage, the contraction percentage of area, compared with Good plasticity and higher toughness and intensity；Enter stokehold production spare part is assembled and adjusted, can avoid in the operation of rolling Middle produce folds or scratched, and destroys product surface, forms the crackle of cracking by carrying out pickling repeatedly, reconditioning to blank, moving back Fire, drawing, accomplish surface zero-fault.Find that this material is the requirement for meeting hardness and the coefficient of expansion, again through client's actual processing Simultaneous manufacturing can be carried out using cold-heading method.Stock utilization not only increases processing efficiency, more saved up to 95% Material, reduces cost of goods manufactured.
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%, sulphur：0.015%, iron：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%, sulphur：0.01%, iron：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%, sulphur：0.012%, iron：63.137%.
Above example 1-3 production method comprises the following steps：
1st, vacuum melting：
（1）, raw material prepare：The furnace charge is Jinchuan Ni plates, metallic silicon, Mn, Ultra-low carbon and technical pure Fe materials, toasted standby With；
（2）, charging：Load in vacuum induction melting furnace toasted rear standby Jinchuan Ni plates, metallic silicon, Mn, Ultra-low carbon and Technical pure Fe furnace charges；
（3）, refining：Low-power material, power high speed melt, the refining temperature 1500 to be achieved after fine melt are increased after melting 70% Enter refining period after DEG C, refining is kept for 30 minutes；
（4）, cast：The refining later stage turns low 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, uses CaF2、Al2O3Remelting electroslag system is made with CaO；
（2）, shove charge：Chassis, striking agent, crystallizer and electrode are installed, necessary first water flowing before dress crystallizer, and checked for 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, and water tank face will be dried, totally, Striking agent is put, to ensure its electric conductivity；
（3）, striking slag making：Reduction electrode makes electrode be contacted with striking agent, completes striking work, melts striking agent, adds weight Molten electroslag system；
（4）, smelt：Plus spoon does not allow with crystallizer, electrode bar while contact or the random slag charge smash on crystallizer of slag spoon, draw during slag Arc current is normally to be smelted again after 500-1500A, slag fine melt, and control electric current 2500-3000A, voltage 38-41V make electrode Fusing, untill crystallizer is filled；
（5）, feeding cooling：Smelting is finished carry out feeding, and feeding electric current is tapered into, untill current value is changed into 0, during feeding Between 3-5 minutes, electrode is lifted off more than electroslag face 3cm to have a power failure, remelted ingot was cooled down after 30 minutes in a crystallizer De- ingot air cooling.
3rd, cogging is forged：（1）, preheating：Steel ingot base is heated to 850 DEG C by room temperature, answers slow heat, 30-50 points of preheating Clock；
（2）, heating：Steel nail base quickly heats to 1050-1150 DEG C, and duty turns over ingot blank, makes its equalizing temperature, is incubated 40- 50 minutes；
（3）, insulation：It is incubated when reaching and forging temperature, insulation is forged for 20 minutes, initial forging temperature is 1100 DEG C, finish-forging Temperature is 950 DEG C.
（4）, forging：Forging uses the weight of the second light industry bureau one, and steel ingot is made in two uniform maneuvers.Forging should with during before beginning Clinker, the rubbish on cleaning surface etc., are first touched with less deflection in time, are taken the circumstances into consideration to thump after improving etc. plasticity, are closed on Touched again during final forging temperature, it is desirable to which deformation is uniform, it is to avoid is hit 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, destroys surface, influences 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）, soaking 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, first parcel is put into prepare lubricant (see Table -1) in be lubricated, be sufficiently stirred for, coating uniform.Parcel after lubrication should uniformly be spread out, carried out Exposure to Sunlight 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 mould of suitable pass, it is as follows with mold technique standard：Unit (mm) " * " represent annealing (annealing temperature referring to《Well vacuum electric furnace is heat-treated (annealing) list》) ￠ 18.0*-￠ 17.0*-￠ 16.0*-￠ 15.0*-￠ 14.0*-￠ 13.0*-￠ 10.0* and ￠ 8.5
Blank pickle is matched：
Pickle is matched Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 10-20
Pickle is matched 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 flash, foreskin, crackle）, entered with portable emery wheel Row reconditioning is handled, and is noted with good protection tool.
8th, make annealing treatment：Crin is placed in well annealing furnace and made annealing treatment, temperature is protected at 800 DEG C -850 DEG C Warm 1-2 hour.
9th, pickling test：Soaked with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 8-15 points Clock.Material surface situation is checked, light pruning is carried out with portable emery wheel, it is desirable to which surface defect depth is no more than 0.5mm.
Pickle is matched Concentration % Temperature DEG C Time
HCL:HNO3:H2O=1:1:Surplus 15 30-50 3-15
10th, finish draw：
(1), wire drawing skidding technological requirement：Before operation, first parcel is put into the lubricant (being shown in Table -1) prepared and is lubricated, It is sufficiently stirred for, coating uniform.Parcel after lubrication should uniformly be spread out, carried out Exposure to Sunlight and dried or dry.
With mold technique requirement：It need to be required according to size, select the mould of suitable pass, it is as follows with mold technique standard：
Unit（mm）" * " represents 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：Next specification is often drawn all to need to carry out pickling test, reconditioning processing.
11st, it is heat-treated：Silk material after will be cold drawn is placed in well formula argon gas protection bright annealing furnace and is heat-treated, at heat Temperature is managed at 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation, discharging.
Resonant rod produced by the invention cold-heading silk, that is, meet the hardness needed for resonant rod and the requirement of the coefficient of expansion, It disclosure satisfy that the requirement of cold-heading processing again simultaneously.We from influence 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, improve surface, the inherent quality of steel ingot, improve the performance of steel alloy, Reduce the content of nonmetallic inclusionsin steel and H, O gas content；Enter stokehold production spare part is assembled and adjusted, Avoid producing in the operation of rolling as far as possible and fold or scratch, destroy product surface；Entered using well formula argon gas protection bright annealing furnace Row deoxidation, crystal grain thinning, 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 carrying out pickling, reconditioning, annealing, drawing repeatedly to blank, accomplishes surface zero-fault, effectively Ensure that cold-heading silk lumber recovery.

Claims (1)

1. a kind of resonant rod production method of cold-heading silk, it is characterised in that the quality hundred for each chemical composition that cold-heading silk includes Point ratio is：Nickel：36.8%, manganese：0.5%, silicon:0.28%, phosphorus：0.10%, carbon：0.015%, sulphur：0.01%, iron surplus；
Described production method, 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 into vacuum induction melting furnace Row melting, enters refining period after fine melt after 1460-1660 DEG C of refining temperature to be achieved, refining is kept at least 30 minutes, refining Later stage turns low 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, are made steel ingot base；Draw Arc current is normally to be smelted again after 500-1500A, slag fine melt, and control electric current 2500-3000A, voltage 38-41V make electrode Fusing, untill crystallizer is filled, smelting, which 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；It is warming up to 1000-1150 DEG C, 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 Steel ingot is made in maneuver；
4）Hot-roll forming：Material loads the temperature of annealing furnace：≤600℃；Heating-up time >=120 minute；Heating-up temperature：1000- 1150℃；Soaking time：>=30 minutes, the beginning rolled temperature：≥1180℃；Finishing temperature >=950 DEG C；
5）Crin drawing：Before operation, first carry out matching somebody with somebody mould, drawing process is carried out with glomerocryst mould by deformation requirements；
6）Sour openpore material：Soaked with sulfuric 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 processing is carried out to surface defect；
8）Annealing：Blank is placed in pit type annealing furnace and made annealing treatment, temperature is protected at 800 DEG C -850 DEG C Warm 1-2 hour；
9）Pickling test：Soaked with sulfuric acid, salt acid rinse to white, 50-80 DEG C of pickling temperature, pickling time 20-30min；Inspection Material surface situation is looked into, artificial reconditioning is carried out with portable emery wheel, it is desirable to which 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 mould of suitable pass；
（2）Finish draw：Next specification is often drawn all to need to carry out pickling test, reconditioning processing；
11）Heat treatment：Silk material after will be cold drawn is placed in well formula argon gas protection bright annealing furnace and is heat-treated, heat treatment temperature Degree is at 800 DEG C -850 DEG C, air cooling after 1-2 hour of insulation, discharging.
CN201710308108.0A 2014-06-11 2014-06-11 A kind of stock utilization higher resonant rod cold-heading silk Pending CN107130182A (en)

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