CN107058691A - The production and processing technology of super-strength medium carbon alloy steel material - Google Patents
The production and processing technology of super-strength medium carbon alloy steel material Download PDFInfo
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- CN107058691A CN107058691A CN201611238364.9A CN201611238364A CN107058691A CN 107058691 A CN107058691 A CN 107058691A CN 201611238364 A CN201611238364 A CN 201611238364A CN 107058691 A CN107058691 A CN 107058691A
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- Prior art keywords
- production
- super
- alloy steel
- processing technology
- medium carbon
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Classifications
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- 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
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
Abstract
The present invention discloses a kind of production and processing technology of super-strength medium carbon alloy steel material, includes following steps：（1）Selection：Mother metal is used as from the model 10B33 of domestic production material；（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out；（3）Spheroidizing；（4）Cold-heading molding：Heading machine cold-heading molding is rushed in two moulds four；（5）Heat treatment：Take the mode of quenching+high tempering.After being handled by present invention process, ferrous materials possess higher plastic deformation ability, and annealed structure crystal grain is uniform, and Oxygen potential is high, tissue without exception, and ferrous materials meet client's forming requirements, and heat treatment rear bolt mechanical performance reaches 12.9 grades of standard requirements.Small, the high fatigue strength of final product notch sensitivity, risk of breakage are low, while having certain corrosion stability, by the control added to alloying element, greatly reduce material cost.
Description
Technical field
The present invention relates to wire production manufacture field technology, a kind of production of super-strength medium carbon alloy steel material is referred in particular to
Processing technology.
Background technology
Ferrous materials are the basic materials of modern industry, in all basic materials of social development, shared by ferrous materials
Ratio is highest.With developing rapidly for China's economy, steel consumption rises year by year with the speed produced, and production capacity persistently expands
Greatly, but China's steel whole industry is always all in lossing state, it is that Iron and Steel Enterprises in China innovation ability is very weak to study carefully its underlying causes,
The result caused is a large amount of ores of import, is largely exported after roughing, then from the external high-grade steel for making a big purchase high added value in large quantities.
And China's unit steel production consumes resource and is significantly larger than developed country, causes coal electric resources nervous and Heavy environmental pollution
While, inappreciable profit is only earned, is gone abroad while raw material are transported with cheap price, resource is fallen sharply outflow.
Under the background of structural transformation of the economy, energy supply shortage and attention is increasingly subject to the problems such as environmental pollution, is made by environmental pollution
Into people fitness decline year by year it is also increasingly serious with the diversified problem of disease.Therefore, about energy-saving and emission-reduction and subtract
The development of the scientific research technical work of of low pollution becomes particularly significant with application, forces Chinese Iron ＆ Steel Enterprises to improve the additional of product
Value, greatly develops high-quality, high performance steel, while reducing the input of the energy, strengthens the efficient utilization of the energy.
Medium carbon steel, can not be thermally treated with certain intensity and hardness in the case of low alloying, directly using heat
Stocking, cold drawn material, can also be used after Overheating Treatment.Medium carbon alloy steel after quenching, tempering has good synthesis mechanical property
Can, so medium carbon alloy steel is widely used in the fields such as construction material, machine components and Investment in fastener industry.
It is difficult buying on domestic market to kind, specification be suitable, the raw material of steady quality, causing should be in metallurgy
Solved in industry material the transformation of the way etc. process be transferred to high-strength bolt production industry, not only waste substantial amounts of financial resources,
Material resources, and result in that the quality of raw material is unstable, so as to have impact on the quality of high-strength bolt.The line of current China's production
The bolt percent defective that material makes is higher, and most of 8.8-12.9 grades of high-strength bolt steel material is all the import former material used
Material.
With the development of the every profession and trades such as automobile, machinery, the energy, light industry, building, the material property for manufacturing all kinds of bolts is carried
Gone out higher requirement, while cost is reduced, material will also have lighter weight, higher intensity, reliable toughness,
The better performances such as stronger corrosion resistance, longer service life and easy processing.
The content of the invention
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide carbon in a kind of super-strength to the present invention
The production and processing technology of alloy steel material, the problem of its bolt percent defective that can effectively solve existing wire rod making is high.
To achieve the above object, the present invention is using following technical scheme：
A kind of production and processing technology of super-strength medium carbon alloy steel material, includes following steps：
（1）Selection：Mother metal is used as from the model 10B33 of domestic production material；
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, and total draught is
60%-80%, Partial shrinkage rate 8%-15%；
（3）Spheroidizing：First be warming up to 30-40 DEG C of the austenite transformation temperature above, be incubated 3-4 hours, then again with 15 DEG C/it is small
Shi Sudu is cooled to below austenite transformation temperature 20-30 DEG C, is incubated 4-6 hours, then cools to 530 DEG C with the furnace and comes out of the stove；
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, process head shaping 65%, three are rushed two
Rush process head shaping 90%；
（5）Heat treatment：Take the mode of quenching+high tempering, first by work by workpiece heat to 850-880 DEG C, insulation 2-3 it is small
When, oil cooling is carried out, the workpiece after quenching is reheated to 380-420 DEG C in time, 1-2 hours are incubated, then carry out air cooling.
It is used as a kind of preferred scheme, the step（3）Middle spheroidizing overall process is carried out in methanol atmosphere, methanol stream
Measure as 1.8L/min.
It is used as a kind of preferred scheme, the step（4）Middle forging ratio >=8.
The present invention has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technical proposal
Understand：
After being handled by present invention process, ferrous materials possess higher plastic deformation ability, and annealed structure crystal grain is uniform, nodularization
Rate is high, tissue without exception, and ferrous materials meet client's forming requirements, and heat treatment rear bolt mechanical performance reaches that 12.9 grades of standards will
Ask.Small, the high fatigue strength of final product notch sensitivity, risk of breakage are low, while having certain corrosion stability, by right
The control of alloying element addition, greatly reduces material cost.Its properties is substantially superior to it can be seen from above index
Existing market similar products, can preferably be applied to building, machine components and Investment in fastener industry, improve the product of industry production
Performance and life-span, with good market prospects, it is contemplated that considerable economic benefit can be created for company.
Embodiment
Present invention is disclosed a kind of production and processing technology of super-strength medium carbon alloy steel material, include following steps：
（1）Selection：Mother metal is used as from the model 10B33 of domestic production material；Sieve is optimized to alloying element B content
Choosing, control is in 0.0020-0.0030%, to reach while the mechanical performance for ensureing its final products, greatly reduction material into
This；Especially S, P content are strictly controlled in receiving inspection simultaneously, to Segregation of Chemical Composition, interior tissue situation, original size
More strict control in terms of precision and the stability of various performance inconsistencies, to meet the needs of production.
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, total draught
For 60%-80%, Partial shrinkage rate 8%-15%；Total draught is big, and the deflection that it is produced is bigger, and interior tissue is produced when changing
Stress value is higher, can provide more energy for follow-up spheroidizing, improve Oxygen potential, and plasticity is improved.Partial shrinkage
Rate is small, Steel Wire Surface work-hardening capacity in process can be greatly lowered, stability of enhancing product performance.
（3）Spheroidizing：30-40 DEG C of the austenite transformation temperature above is first warming up to, 3-4 hours are incubated, then again with 15
DEG C/h speed is cooled to below austenite transformation temperature 20-30 DEG C, is incubated 4-6 hours, then cools to 530 DEG C with the furnace and comes out of the stove；
Spheroidizing overall process is carried out in methanol atmosphere, and methanol stream amount is 1.8L/min.Whole process key be to temperature and
The control of time, if holding temperature is too high, overlong time, cementite uniformly will be dissolved in austenite, so as to form single
Uniform austenite structure, when holding temperature is relatively low, the time too in short-term, cementite then not by fully molten disconnected, no matter which kind of feelings
Condition occurs all to hardly result in preferable spherodized structure.
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, the shaping of process head is rushed two
65%, three rush process head shaping 90%；Forging ratio >=8 of formed product.And according to the mechanics of materials, in simulation material forming process
Stressing conditions, direct prefabricated certain shape on two punch dies, three punch dies, mitigate operator labor intensity, improve product
The accuracy of shaping.
（5）Heat treatment：Heat treatment：Take the mode of quenching+high tempering, first by work by workpiece heat to 850-880 DEG C,
Insulation 2-3 hours, carries out oil cooling, and the workpiece after quenching is reheated into 380-420 DEG C in time, is incubated 1-2 hours, then carry out
Air cooling.The process needs to control temperature and time, and temperature is too low, then organizes internal stress to eliminate incomplete, fragility is big, toughness
Small, low intensity, temperature is too high, then tissue can be caused thick, performance is unstable.
With multiple embodiments, the invention will be further described below：
A kind of production and processing technology of super-strength medium carbon alloy steel material, includes following steps：
（1）Selection：From domestic production model 10B33 material as mother metal, its B content is 0.0020%；
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, and total draught is
70%, Partial shrinkage rate 12%；
（3）Spheroidizing：35 DEG C are first warming up to more than austenite transformation temperature, 4 hours are incubated, then again with 15 DEG C/h of speed
Degree is cooled to below austenite transformation temperature 25 DEG C, is incubated 5 hours, then cools to 530 DEG C with the furnace and comes out of the stove；Spheroidizing overall process
Carried out in methanol atmosphere, methanol stream amount is 1.8L/min.
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, the shaping of process head is rushed two
65%, three rush process head shaping 90%；Forging ratio >=8 of formed product.
（5）Heat treatment：The mode of quenching+high tempering is taken, first by workpiece heat to workpiece heat to 850 DEG C, insulation
2.5 hours, it is ensured that inside workpiece is obtained after complete through hardening, oil cooling is carried out, the workpiece after quenching is reheated to 420 in time
DEG C, 1.5 hours are incubated, then carry out air cooling.
Embodiment 2：
A kind of production and processing technology of super-strength medium carbon alloy steel material, includes following steps：
（1）Selection：From domestic production model 10B33 material as mother metal, its B content is 0.0025%；
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, and total draught is
60%, Partial shrinkage rate 15%；
（3）Spheroidizing：30 DEG C are first warming up to more than austenite transformation temperature, 3.5 hours are incubated, then again with 15 DEG C/h
Speed is cooled to below austenite transformation temperature 20 DEG C, is incubated 4 hours, then cools to 530 DEG C with the furnace and comes out of the stove；The full mistake of spheroidizing
Journey is carried out in methanol atmosphere, and methanol stream amount is 1.8L/min.
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, the shaping of process head is rushed two
65%, three rush process head shaping 90%；Forging ratio >=8 of formed product.
（5）Heat treatment：The mode of quenching+high tempering is taken, first by 865 DEG C of workpiece heat, 2 hours are incubated, it is ensured that work
Obtained inside part after complete through hardening, carry out oil cooling, the workpiece after quenching is reheated to 400 DEG C in time, be incubated 1 hour, then
Carry out air cooling.
Embodiment 3：
A kind of production and processing technology of super-strength medium carbon alloy steel material, includes following steps：
（1）Selection：From domestic production model 10B33 material as mother metal, its B content is 0.0030%；
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, and total draught is
80%, Partial shrinkage rate 8%；
（3）Spheroidizing：40 DEG C are first warming up to more than austenite transformation temperature, 3 hours are incubated, then again with 15 DEG C/h of speed
Degree is cooled to below austenite transformation temperature 30 DEG C, is incubated 6 hours, then cools to 530 DEG C with the furnace and comes out of the stove；Spheroidizing overall process
Carried out in methanol atmosphere, methanol stream amount is 1.8L/min.
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, the shaping of process head is rushed two
65%, three rush process head shaping 90%；Forging ratio >=8 of formed product.
（5）Heat treatment：The mode of quenching+high tempering is taken, first by workpiece heat to 880 DEG C, 3 hours are incubated, it is ensured that
Inside workpiece is obtained after complete through hardening, carries out oil cooling, and the workpiece after quenching is reheated into 420 DEG C in time, is incubated 2 hours,
Air cooling is carried out again.
By after the processing of each above-mentioned embodiment obtained product carry out nodularization body rank, grain size, decarburized layer deepness,
Core hardness（HV0.3）, product level is examined after metallographic structure and heat treatment, nodularization body rank, grain size, decarburized layer deepness,
Core hardness（HV0.3）, the method for inspection of product level is existing mature technology after metallographic structure and heat treatment, at this to nodularization
Body rank, grain size, decarburized layer deepness, core hardness（HV0.3）, after metallographic structure and heat treatment product level the method for inspection
Do not make narration in detail, examine obtained data as shown in the table：
After being handled by present invention process, ferrous materials possess higher plastic deformation ability, and annealed structure crystal grain is uniform, nodularization
Rate is high, tissue without exception, and ferrous materials meet client's forming requirements, and heat treatment rear bolt mechanical performance reaches that 12.9 grades of standards will
Ask.Small, the high fatigue strength of final product notch sensitivity, risk of breakage are low, while having certain corrosion stability, by right
The control of alloying element addition, greatly reduces material cost.Its properties is substantially superior to it can be seen from above index
Existing market similar products, can preferably be applied to building, machine components and Investment in fastener industry, improve the product of industry production
Performance and life-span, with good market prospects, it is contemplated that considerable economic benefit can be created for company.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still
Belong in the range of technical solution of the present invention.
Claims (3)
1. a kind of production and processing technology of super-strength medium carbon alloy steel material, it is characterised in that：Include following steps：
（1）Selection：Mother metal is used as from the model 10B33 of domestic production material；
（2）Drawing：The principle that drawing takes big total draught and small Partial shrinkage rate to be combined is carried out, and total draught is
60%-80%, Partial shrinkage rate 8%-15%；
（3）Spheroidizing：First be warming up to 30-40 DEG C of the austenite transformation temperature above, be incubated 3-4 hours, then again with 15 DEG C/it is small
Shi Sudu is cooled to below austenite transformation temperature 20-30 DEG C, is incubated 4-6 hours, then cools to 530 DEG C with the furnace and comes out of the stove；
（4）Cold-heading molding：Rushed in two moulds four in heading machine cold-heading molding, technological design, process head shaping 65%, three are rushed two
Rush process head shaping 90%；
（5）Heat treatment：Take the mode of quenching+high tempering, first by work by workpiece heat to 850-880 DEG C, insulation 2-3 it is small
When, oil cooling is carried out, the workpiece after quenching is reheated to 380-420 DEG C in time, 1-2 hours are incubated, then carry out air cooling.
2. the production and processing technology of super-strength medium carbon alloy steel material according to claim 1, it is characterised in that：The step
Suddenly（3）Middle spheroidizing overall process is carried out in methanol atmosphere, and methanol stream amount is 1.8L/min.
3. the production and processing technology of super-strength medium carbon alloy steel material according to claim 1, it is characterised in that：The step
Suddenly（4）Middle forging ratio >=8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611238364.9A CN107058691A (en) | 2016-12-28 | 2016-12-28 | The production and processing technology of super-strength medium carbon alloy steel material |
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| CN201611238364.9A CN107058691A (en) | 2016-12-28 | 2016-12-28 | The production and processing technology of super-strength medium carbon alloy steel material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160741A (en) * | 2017-12-28 | 2018-06-15 | 东莞科力线材技术有限公司 | Press part steel alloy wire rod preparation method, press part and its hardening and tempering process |
| CN108213095A (en) * | 2017-12-28 | 2018-06-29 | 东莞科力线材技术有限公司 | A kind of fan net counter-bending steel wire of super-strength thin footpath and preparation method thereof |
| CN108246818A (en) * | 2017-12-28 | 2018-07-06 | 东莞科力线材技术有限公司 | A kind of car belt pull rod mild steel material and its preparation process |
| CN111363893A (en) * | 2020-04-15 | 2020-07-03 | 金晓亮 | Manufacturing process of ultrahigh-strength fastener |
| CN111383861A (en) * | 2018-12-28 | 2020-07-07 | 东莞科力线材技术有限公司 | Magnetic conductive material for electromagnetic relay and preparation method thereof |
| CN113151654A (en) * | 2021-04-26 | 2021-07-23 | 东南大学 | Processing method of medium carbon alloy steel |
| CN113604646A (en) * | 2021-08-06 | 2021-11-05 | 金晓亮 | Manufacturing process of ultrahigh-strength fastener |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108160741A (en) * | 2017-12-28 | 2018-06-15 | 东莞科力线材技术有限公司 | Press part steel alloy wire rod preparation method, press part and its hardening and tempering process |
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| CN108246818A (en) * | 2017-12-28 | 2018-07-06 | 东莞科力线材技术有限公司 | A kind of car belt pull rod mild steel material and its preparation process |
| CN111383861A (en) * | 2018-12-28 | 2020-07-07 | 东莞科力线材技术有限公司 | Magnetic conductive material for electromagnetic relay and preparation method thereof |
| CN111363893A (en) * | 2020-04-15 | 2020-07-03 | 金晓亮 | Manufacturing process of ultrahigh-strength fastener |
| CN113151654A (en) * | 2021-04-26 | 2021-07-23 | 东南大学 | Processing method of medium carbon alloy steel |
| CN113604646A (en) * | 2021-08-06 | 2021-11-05 | 金晓亮 | Manufacturing process of ultrahigh-strength fastener |
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Application publication date: 20170818 |
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