CN107858608A - A kind of manufacture method of bent axle high performance alloys mould - Google Patents

A kind of manufacture method of bent axle high performance alloys mould Download PDF

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Publication number
CN107858608A
CN107858608A CN201711149204.1A CN201711149204A CN107858608A CN 107858608 A CN107858608 A CN 107858608A CN 201711149204 A CN201711149204 A CN 201711149204A CN 107858608 A CN107858608 A CN 107858608A
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CN
China
Prior art keywords
temperature
parts
mould
alloy
bent axle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711149204.1A
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Chinese (zh)
Inventor
赵大鹏
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Bengbu Harvest Electromechanical Equipment Manufacturing Co Ltd
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Bengbu Harvest Electromechanical Equipment Manufacturing Co Ltd
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Priority to CN201711149204.1A priority Critical patent/CN107858608A/en
Publication of CN107858608A publication Critical patent/CN107858608A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0025—Adding carbon 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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces

Abstract

The invention discloses a kind of manufacture method of bent axle high performance alloys mould, it is characterised in that including following aspect：（1）Just refining, charcoal steel is put into heat in smelting furnace and melted, carbon black is added into molten steel and hybrid alloys is refined；（2）Forging, by molten steel respectively in 1,170 1180 DEG C and 910 930 DEG C refinings；（3）Cast molding, wrought alloy water is cast, and carry out interim cooling；（4）Quenching Treatment：Alloy mold is placed in high temperature furnace and carries out Quenching Treatment；（5）Passivation Treatment：Will quenching alloy mold as being passivated processing in vacuum tank.

Description

A kind of manufacture method of bent axle high performance alloys mould
Technical field
The invention belongs to mold machining technology field, and in particular to a kind of manufacture method of bent axle high performance alloys mould.
Background technology
Bent axle, it is the important component of engine, it needs to bear centrifugal force, gas inertia power and be used in engine operation Property power collective effect, bent axle is born the effect of flexion torsion load, therefore it is required that bent axle need to have enough intensity and just Degree, and wearability and heat-resisting quantity；So processing raw material for bent axle needs higher heat-resisting quantity and intensity, and need to be through height Warm long-time is forged moulding.And spend Crankshaft Machining mould its have with greater need in hardness, heat-resisting quantity, shrinkage factor etc. Higher performance, there is higher processing characteristics after just can ensure that bent axle casting processing；And conventional steel mould, although having phase To higher hardness and decay resistance, for being molded, low-temperature metal processing can fully meet its processing characteristics needs, it is but right Processed in high performance alloys mechanical part, it is in heat-resisting quantity, hardness etc. poor-performing, and shrinkage factor in high temperature process It is larger, cause processing component tight ness rating not up to standard；And single composition steel alloy its to mold performance lifted it is more single, it is impossible to simultaneously Meet the requirement of heat-resisting quantity, hardness and shrinkage factor etc. processing characteristics.
The content of the invention
The present invention is directed to the problem of existing：Conventional steel mould, although with of a relatively high hardness and decay resistance, For being molded, low-temperature metal processing can fully meet its processing characteristics needss, but for the processing of high performance alloys mechanical part, It is in heat-resisting quantity, hardness etc. poor-performing, and shrinkage factor is larger in high temperature process, causes processing component tight ness rating not It is up to standard；And single composition steel alloy its mold performance is lifted it is more single, it is impossible to while meet heat-resisting quantity, hardness and contraction The requirement of rate etc. processing characteristics.To solve the above problems, the invention provides a kind of manufacture of bent axle high performance alloys mould Method.
The present invention is achieved by the following technical solutions：
A kind of manufacture method of bent axle high performance alloys mould, comprises the following steps：
（1）Just refining：Charcoal steel is put into smelting furnace and heats fusing, carbon black is added into molten steel, is then refined in 1210-1220 DEG C of constant temperature 1-2h processed, hybrid alloys are added, carry out high-temperature fusion, alloy molten steel is made；
（2）Forging：Temperature of smelting furnace is cooled to 1170-1180 DEG C for 10-12 DEG C/min according to cooling rate, keeps constant temperature 4- 5h, then 1-2h is refined at 910-930 DEG C respectively, forging molten steel is made；
（3）Cast molding：Wrought alloy water is cast, and keeps 910-930 DEG C of temperature 40-45min, then according to 5-8 DEG C/cooling of min speed, respectively in 760-780 DEG C and 640-50 DEG C holding 1-2h, alloy mold is made after processed, polishing；
（4）Quenching Treatment：Alloy mold is placed in high temperature furnace and carries out Quenching Treatment, 2-3h is handled at a temperature of 810-830 DEG C, Quenching alloy mold is made after recirculated water Slow cooling；
（5）Passivation Treatment：By quenching alloy mold as processing is passivated in vacuum tank, first its volume is passed through to vacuum tank 34%-38% ozone, and 1-2h is passivated at a temperature of 210-230 DEG C, finished product mould.
Step（1）Described hybrid alloys, it is respectively configured to sub-prime gauge part and is：Carborundum 6-9 parts, chromium 3-5 parts, nickel 2- 4 parts, manganese 1-3 parts, titanium 0.5-1 parts, vanadium 0.6-0.8 parts, molybdenum 0.3-0.5 parts.
Step（1）Described carbon black, its addition are the 0.2%-0.3% of steel quality；Described hybrid alloys, it is added Measure the 2%-3% for steel quality.
Step（1）Described high-temperature fusion, its temperature are 1620-1640 DEG C, time 50-60min.
The present invention has advantages below compared with prior art：First smelting method, into molten steel, addition carbon black is refined by constant temperature, Carbon element content in steel can be improved, improves the hardness and structural stability of steel；And hybrid alloys are added after refining, it has The metal ingredients such as nickel, manganese, titanium, vanadium fully merge with iron, carbon component, can improve the heat-resisting quantity, hardness, corrosion resistance of steel alloy With reduction shrinkage factor.Forging method, by obtained steel alloy water respectively in 1170-1180 DEG C and 910-930 DEG C of two stage temperature Degree carries out forging refining, can promote to add fully merging for the compositions such as alloying component and iron, carbon, improve the overall processing of steel Can, and close structure degree can be improved.Cast molding, molten steel is kept after casting by interim constant temperature and slow cooling rate, The stability of its internal structure of alloy mold after processing can be improved, and avoids cooling excessive temperature differentials from causing mould property unstable, The performances such as hardness, the high temperature resistant of mould can be improved.Quenching Treatment, alloy mold top layer is handled by high temperature, can be improved The tight ness rating and stability of surface structure, hardness, the corrosion resistance of alloy mold are improved, and reduce shrinkage factor.And use blunt Change method, dense oxide film layer can be formed on alloy mold top layer, decay resistance and the surface for improving alloy mold are smooth Property, and mould top layer activity is reduced, improve its stability in component processing.
Embodiment
Embodiment 1：
A kind of manufacture method of bent axle high performance alloys mould, comprises the following steps：
（1）Just refining：Charcoal steel is put into smelting furnace and heats fusing, carbon black is added into molten steel, is then refined in 1214 DEG C of constant temperature 1.5h, hybrid alloys are added, carry out high-temperature fusion, alloy molten steel is made；
（2）Forging：Temperature of smelting furnace is cooled to 1173 DEG C for 11 DEG C/min according to cooling rate, keeps constant temperature 4.5h, then distinguish 1.5h is refined at 917 DEG C, forging molten steel is made；
（3）Cast molding：Wrought alloy water is cast, and keeps 916 DEG C of temperature 42min, then according to 6 DEG C/min speed Degree cooling, 1.5h is kept at 768 DEG C and 643 DEG C respectively, alloy mold is made after processed, polishing；
（4）Quenching Treatment：Alloy mold is placed in high temperature furnace and carries out Quenching Treatment, 2.5h is handled at a temperature of 817 DEG C, through following Quenching alloy mold is made after ring water Slow cooling；
（5）Passivation Treatment：By quenching alloy mold as processing is passivated in vacuum tank, first its volume is passed through to vacuum tank 35% ozone, and 1.5h is passivated at a temperature of 215 DEG C, finished product mould.
Step（1）Described hybrid alloys, it is respectively configured to sub-prime gauge part and is：7 parts of carborundum, 3.2 parts of chromium, nickel 2.3 Part, 1.4 parts of manganese, 0.6 part of titanium, 0.64 part of vanadium, 0.37 part of molybdenum.
Step（1）Described carbon black, its addition are the 0.24% of steel quality；Described hybrid alloys, its addition are The 2.3% of steel quality.
Step（1）Described high-temperature fusion, its temperature are 1630 DEG C, time 55min.
Embodiment 2：
A kind of manufacture method of bent axle high performance alloys mould, comprises the following steps：
（1）Just refining：Charcoal steel is put into smelting furnace and heats fusing, carbon black is added into molten steel, then refines 2h in 1218 DEG C of constant temperature, Hybrid alloys are added, carry out high-temperature fusion, alloy molten steel is made；
（2）Forging：Temperature of smelting furnace is cooled to 1178 DEG C for 10-12 DEG C/min according to cooling rate, keeps constant temperature 5h, then distinguish 2h is refined at 925 DEG C, forging molten steel is made；
（3）Cast molding：Wrought alloy water is cast, and keeps 928 DEG C of temperature 44min, then according to 8 DEG C/min speed Degree cooling, 2h is kept at 775 DEG C and 648 DEG C respectively, alloy mold is made after processed, polishing；
（4）Quenching Treatment：Alloy mold is placed in high temperature furnace and carries out Quenching Treatment, 3h is handled at a temperature of 827 DEG C, through circulation Quenching alloy mold is made after water Slow cooling；
（5）Passivation Treatment：By quenching alloy mold as processing is passivated in vacuum tank, first its volume is passed through to vacuum tank 37% ozone, and 2h is passivated at a temperature of 226 DEG C, finished product mould.
Step（1）Described hybrid alloys, it is respectively configured to sub-prime gauge part and is：8 parts of carborundum, 4.5 parts of chromium, nickel 3.6 Part, 2.7 parts of manganese, 0.8 part of titanium, 0.74 part of vanadium, 0.46 part of molybdenum.
Step（1）Described carbon black, its addition are the 0.28% of steel quality；Described hybrid alloys, its addition are The 2.7% of steel quality.
Step（1）Described high-temperature fusion, its temperature are 1635 DEG C, time 58min.
Control group：Using D2 steel institute's molding jig as reference.
Experimental result：Embodiment 1, embodiment 2, control group are compared, relative to control group, embodiment 1 and implementation 2 made alloy mold of example, its hardness improve more than 21%, heat-resisting quantity improve more than 36%, and its shrinkage factor decline 24% with On, and its interior lights slip and decay resistance are good.

Claims (4)

1. a kind of manufacture method of bent axle high performance alloys mould, it is characterised in that comprise the following steps：
（1）Just refining：Charcoal steel is put into smelting furnace and heats fusing, carbon black is added into molten steel, is then refined in 1210-1220 DEG C of constant temperature 1-2h processed, hybrid alloys are added, carry out high-temperature fusion, alloy molten steel is made；
（2）Forging：Temperature of smelting furnace is cooled to 1170-1180 DEG C for 10-12 DEG C/min according to cooling rate, keeps constant temperature 4- 5h, then 1-2h is refined at 910-930 DEG C respectively, forging molten steel is made；
（3）Cast molding：Wrought alloy water is cast, and keeps 910-930 DEG C of temperature 40-45min, then according to 5-8 DEG C/cooling of min speed, respectively in 760-780 DEG C and 640-50 DEG C holding 1-2h, alloy mold is made after processed, polishing；
（4）Quenching Treatment：Alloy mold is placed in high temperature furnace and carries out Quenching Treatment, 2-3h is handled at a temperature of 810-830 DEG C, Quenching alloy mold is made after recirculated water Slow cooling；
（5）Passivation Treatment：By quenching alloy mold as processing is passivated in vacuum tank, first its volume is passed through to vacuum tank 34%-38% ozone, and 1-2h is passivated at a temperature of 210-230 DEG C, finished product mould.
2. the manufacture method of bent axle high performance alloys mould as claimed in claim 1, it is characterised in that step（1）Described is mixed Alloy is closed, it is respectively configured to sub-prime gauge part and is：Carborundum 6-9 parts, chromium 3-5 parts, nickel 2-4 parts, manganese 1-3 parts, titanium 0.5-1 parts, Vanadium 0.6-0.8 parts, molybdenum 0.3-0.5 parts.
3. the manufacture method of bent axle high performance alloys mould as claimed in claim 1, it is characterised in that step（1）Described charcoal Black, its addition is the 0.2%-0.3% of steel quality；Described hybrid alloys, its addition are the 2%-3% of steel quality.
4. the manufacture method of bent axle high performance alloys mould as claimed in claim 1, it is characterised in that step（1）Described height Temperature fusion, its temperature are 1620-1640 DEG C, time 50-60min.
CN201711149204.1A 2017-11-18 2017-11-18 A kind of manufacture method of bent axle high performance alloys mould Pending CN107858608A (en)

Priority Applications (1)

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CN107858608A true CN107858608A (en) 2018-03-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103131948A (en) * 2013-02-04 2013-06-05 繁昌县琪鑫铸造有限公司 Preparation method of high-strength T-shaped bolt
CN104060228A (en) * 2014-05-15 2014-09-24 浙江工业大学 Method for preparing high-hardness aluminum titanium ceramic membrane on steel surface
CN107252875A (en) * 2017-06-23 2017-10-17 扬中市第蝶阀厂有限公司 A kind of manufacture method of high intensity valve body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103131948A (en) * 2013-02-04 2013-06-05 繁昌县琪鑫铸造有限公司 Preparation method of high-strength T-shaped bolt
CN104060228A (en) * 2014-05-15 2014-09-24 浙江工业大学 Method for preparing high-hardness aluminum titanium ceramic membrane on steel surface
CN107252875A (en) * 2017-06-23 2017-10-17 扬中市第蝶阀厂有限公司 A kind of manufacture method of high intensity valve body

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
尚可超主编: "《金工实习教程（第2版）》", 30 August 2016, 西安：西北工业大学出版社 *
林勃等主编: "《砂型铸造工艺学》", 30 October 1992, 机械工业出版社 *

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Application publication date: 20180330