CN107964578A - A kind of automobile die steel processing technology - Google Patents

A kind of automobile die steel processing technology Download PDF

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Publication number
CN107964578A
CN107964578A CN201610910022.0A CN201610910022A CN107964578A CN 107964578 A CN107964578 A CN 107964578A CN 201610910022 A CN201610910022 A CN 201610910022A CN 107964578 A CN107964578 A CN 107964578A
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China
Prior art keywords
temperature
60min
cooled
forging
processing technology
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.)
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Application number
CN201610910022.0A
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Chinese (zh)
Inventor
刘存福
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Chongqing Huaxia New Dynamics Energy Automobile Co Ltd
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Chongqing Huaxia New Dynamics Energy Automobile Co Ltd
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Application filed by Chongqing Huaxia New Dynamics Energy Automobile Co Ltd filed Critical Chongqing Huaxia New Dynamics Energy Automobile Co Ltd
Priority to CN201610910022.0A priority Critical patent/CN107964578A/en
Publication of CN107964578A publication Critical patent/CN107964578A/en
Withdrawn legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/32Soft annealing, e.g. spheroidising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)

Abstract

The invention discloses a kind of automobile die steel processing technology, material 3Cr2W8, it is characterised in that the process comprises the following steps:(1)Forge technique;(2)Annealing process;(3)Roughing;(4)It is quenched;(5)Half smart car;(6)High-temperature process;(7)Finishing;(8)Polishing;(9)Destressing is tempered.A kind of automobile die steel processing technology of the present invention can improve its obdurability, prevent mould premature failure from failing by specification each step requirement, Parameter Conditions and points for attention.

Description

A kind of automobile die steel processing technology
Technical field
The invention belongs to automobile die steel processing technology field, is specifically a kind of automobile die steel processing technology.
Background technology
3Cr2W8 steel are one of current domestic widely used cold-working automobile die steel.The steel have quenching degree Good, the advantages that hardness is high and wear-resisting, high-temperature process deformation is small, be usually used in making those and bear heavy load, produce of large quantities, shape The cold-working mould of shape complexity, such as cold punching, coining, cold-heading, cold extruding die.But the significant drawback of the steel is that brittleness is big, often Often result in the initial failure of mould.Therefore, its obdurability how is improved, prevents mould premature failure from failing, is that the steel are used Family frequently encounters and problem to be solved.Mould invalidation analysis shows, high-temperature process factor influence maximum, account for 50%, mirror In existing technique is deposited the defects of, in order to ensure product quality, it is necessary to be further improved.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of automobile die steel processing technology, Its obdurability can be improved, prevents mould premature failure from failing.
A kind of automobile die steel processing technology, material 3Cr2W8, it is characterised in that the process includes following step Suddenly:
(1)Forge technique:Pre- 760 DEG C~830 DEG C of high-temperature temperature, increases temperature 950 DEG C~2100 DEG C of temperature, 1050 DEG C of initial forging temperature ~2100 DEG C, 830 DEG C~950 DEG C of final forging temperature, slow cooling;When forging, upset pulling repeatedly is no less than 3 times;During forging, temperature Tip-tap when spending 1050 DEG C of >;Beaten again during 970~1050 DEG C of temperature;Tip-tap during 970 DEG C of temperature <;
(2)Annealing process:Increase temperature and be warming up to 860 DEG C with the speed of≤90 DEG C/h, with 25-30 DEG C/h speed to furnace cooling 750 DEG C, then furnace cooling with 10-15 DEG C/h speed to 600 DEG C of furnace cooling, then come out of the stove air-cooled;
(3)Roughing;
(4)It is quenched:Pre- 600-600 DEG C of high temperature for the first time, keeps the temperature 45-60min;Second of pre- 830-830 DEG C of high temperature, keeps the temperature 45- 60min, soaking time press 1.5min/mm;Increase temperature again to 1115 DEG C, oil of then quenching;760 DEG C of temperature, it is air-cooled after tempering;
(5)Half smart car;
(6)High-temperature process:Vacuum hardening, pre- 600~600 DEG C of high temperature, keeps the temperature 45-60min, second of pre- high temperature for the first time:840 ~860 DEG C, 45-60min is kept the temperature, soaking time is calculated by 1.5min/mm;980 DEG C of hardening heat, oil cooling, medium temperature 15~ 30℃;It is then air-cooled to be cooled to oil temperature;
(7)Finishing;(8)Polishing:Roughness is less than 0.6um;(9)Destressing is tempered:2100-150 DEG C of temperature, when Between 2-2.5h.
A kind of automobile die steel processing technology of the present invention is by each step requirement of specification, Parameter Conditions and pays attention to thing , its obdurability can be improved, prevents mould premature failure from failing.
Embodiment
With reference to embodiment, the invention will be further described, its operating procedure is as follows:
A kind of automobile die steel processing technology, material 3Cr2W8, the process comprise the following steps:
(1)Forge technique:Pre- 760 DEG C~830 DEG C of high-temperature temperature, increases temperature 950 DEG C~2100 DEG C of temperature, 1050 DEG C of initial forging temperature ~2100 DEG C, 830 DEG C~950 DEG C of final forging temperature, slow cooling;When forging, upset pulling repeatedly is no less than 3 times;During forging, temperature Tip-tap when spending 1050 DEG C of >;Beaten again during 970~1050 DEG C of temperature;Tip-tap during 970 DEG C of temperature <;
(2)Annealing process:Increase temperature and be warming up to 860 DEG C with the speed of≤90 DEG C/h, with 25-30 DEG C/h speed to furnace cooling 750 DEG C, then furnace cooling with 10-15 DEG C/h speed to 600 DEG C of furnace cooling, then come out of the stove air-cooled;
(3)Roughing;
(4)It is quenched:Pre- 600-600 DEG C of high temperature for the first time, keeps the temperature 45-60min;Second of pre- 830-830 DEG C of high temperature, keeps the temperature 45- 60min, soaking time press 1.5min/mm;Increase temperature again to 1115 DEG C, oil of then quenching;760 DEG C of temperature, it is air-cooled after tempering;
(5)Half smart car;
(6)High-temperature process:Vacuum hardening, pre- 600~600 DEG C of high temperature, keeps the temperature 45-60min, second of pre- high temperature for the first time:840 ~860 DEG C, 45-60min is kept the temperature, soaking time is calculated by 1.5min/mm;980 DEG C of hardening heat, oil cooling, medium temperature 15~ 30℃;It is then air-cooled to be cooled to oil temperature;
(7)Finishing;(8)Polishing:Roughness is less than 0.6um;(9)Destressing is tempered:2100-150 DEG C of temperature, when Between 2-2.5h.

Claims (1)

1. a kind of automobile die steel processing technology, material 3Cr2W8, it is characterised in that the process includes following step Suddenly:
(1)Forge technique:Pre- 760 DEG C~830 DEG C of high-temperature temperature, increases temperature 950 DEG C~2100 DEG C of temperature, 1050 DEG C of initial forging temperature ~2100 DEG C, 830 DEG C~950 DEG C of final forging temperature, slow cooling;When forging, upset pulling repeatedly is no less than 3 times;During forging, temperature Tip-tap when spending 1050 DEG C of >;Beaten again during 970~1050 DEG C of temperature;Tip-tap during 970 DEG C of temperature <;
(2)Annealing process:Increase temperature and be warming up to 860 DEG C with the speed of≤90 DEG C/h, with 25-30 DEG C/h speed to furnace cooling 750 DEG C, then furnace cooling with 10-15 DEG C/h speed to 600 DEG C of furnace cooling, then come out of the stove air-cooled;
(3)Roughing;
(4)It is quenched:Pre- 600-600 DEG C of high temperature for the first time, keeps the temperature 45-60min;Second of pre- 830-830 DEG C of high temperature, keeps the temperature 45- 60min, soaking time press 1.5min/mm;Increase temperature again to 1115 DEG C, oil of then quenching;760 DEG C of temperature, it is air-cooled after tempering;
(5)Half smart car;
(6)High-temperature process:Vacuum hardening, pre- 600~600 DEG C of high temperature, keeps the temperature 45-60min, second of pre- high temperature for the first time:840 ~860 DEG C, 45-60min is kept the temperature, soaking time is calculated by 1.5min/mm;980 DEG C of hardening heat, oil cooling, medium temperature 15~ 30℃;It is then air-cooled to be cooled to oil temperature;
(7)Finishing;(8)Polishing:Roughness is less than 0.6um;(9)Destressing is tempered:2100-150 DEG C of temperature, when Between 2-2.5h.
CN201610910022.0A 2016-10-19 2016-10-19 A kind of automobile die steel processing technology Withdrawn CN107964578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610910022.0A CN107964578A (en) 2016-10-19 2016-10-19 A kind of automobile die steel processing technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610910022.0A CN107964578A (en) 2016-10-19 2016-10-19 A kind of automobile die steel processing technology

Publications (1)

Publication Number Publication Date
CN107964578A true CN107964578A (en) 2018-04-27

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CN201610910022.0A Withdrawn CN107964578A (en) 2016-10-19 2016-10-19 A kind of automobile die steel processing technology

Country Status (1)

Country Link
CN (1) CN107964578A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109182699A (en) * 2018-09-30 2019-01-11 中山市东特模具钢材制品有限公司 A kind of processing technology of die steel
CN110343817A (en) * 2019-07-30 2019-10-18 河源市兴达源模具有限公司 A kind of automobile die steel processing technology
CN111872294A (en) * 2020-07-14 2020-11-03 山东能源重装集团金源机械有限公司 Method for improving forging processing quality of petroleum elevator
CN111979392A (en) * 2020-08-31 2020-11-24 昆山海子精密金属工业有限公司 Efficient machining process for die steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109182699A (en) * 2018-09-30 2019-01-11 中山市东特模具钢材制品有限公司 A kind of processing technology of die steel
CN110343817A (en) * 2019-07-30 2019-10-18 河源市兴达源模具有限公司 A kind of automobile die steel processing technology
CN111872294A (en) * 2020-07-14 2020-11-03 山东能源重装集团金源机械有限公司 Method for improving forging processing quality of petroleum elevator
CN111979392A (en) * 2020-08-31 2020-11-24 昆山海子精密金属工业有限公司 Efficient machining process for die steel

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Application publication date: 20180427