CN108705014A - A kind of die forging method of module forging - Google Patents

A kind of die forging method of module forging Download PDF

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Publication number
CN108705014A
CN108705014A CN201810433030.XA CN201810433030A CN108705014A CN 108705014 A CN108705014 A CN 108705014A CN 201810433030 A CN201810433030 A CN 201810433030A CN 108705014 A CN108705014 A CN 108705014A
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China
Prior art keywords
forging
module
heating
pulling
die
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CN201810433030.XA
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CN108705014B (en
Inventor
苏继伟
许燕燕
王哲
李林
刘宪民
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CERI YINGKOU EQUIPMENT DEVELOPMENT AND MANUFACTURING Co Ltd
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CERI YINGKOU EQUIPMENT DEVELOPMENT AND MANUFACTURING Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations

Abstract

The invention discloses a kind of die forging methods of module forging comprising heating and pulling process, the heating process:By Heating Steel Ingots to 1220 DEG C~1240 DEG C, 9~15h is kept the temperature;The pulling process:Forging ratio≤2;Single depression distance is 0.2~0.22 times of original section size.This method can produce product with primary heating, reduce 2~3 heating, be effectively improved production efficiency, shorten the pressing machine for operation time 45% or so, save resource, reduce production cost, it is contemplated that save cost 50% or so.

Description

A kind of die forging method of module forging
Technical field
The present invention relates to a kind of die forging method, especially a kind of die forging method of module forging.
Background technology
Forging be it is a kind of using metal forming machinery to metal stock apply pressure, make its generate plastic deformation with obtain have one Determine mechanical performance, the processing method of definite shape and size forging, forges and presses(Forging and punching press)One of two big component parts.It presses According to tool of production difference, forging technology can be divided into flat-die forging, module forging, roll over ring and extraordinary forging.Wherein, die forging (Module is forged)Refer to that metal stock obtains forging having compressive deformation in effigurate forging die thorax.
According to JB-T5000.8-2007《Heavy-duty machinery general technical specifications》Requirement in 8th part forging:It is forged with steel ingot When making, without jumping-up person, forging ratio is typically no less than 3.The forging ratio of general forging product is 3 or more in forging industry; It can guarantee that product flaw detection level meets requirement.
At present when production module forging, forging ratio reaches 4 under normal circumstances, and need to carry out jumping-up process, or even have Jumping-up twice is carried out to pull out;This mode of production not only increases production cost, and influences production efficiency, results in waste of resources.
Invention content
The technical problem to be solved in the present invention is to provide a kind of die forging methods of the module forging of low cost.
In order to solve the above technical problems, the technical solution used in the present invention is:It includes heating and pulls out process, described Heating process:By Heating Steel Ingots to 1220 DEG C~1240 DEG C, 9~15h is kept the temperature;
The pulling process:Forging ratio≤2;Single depression distance is 0.2~0.22 times of original section size.
During pulling of the present invention, overturning continues to pull out after pulling every time, pulls out 6~8 times altogether.
In heating process of the present invention, the hot sending temperature of steel ingot is not less than 550 DEG C.
The steel grade of module forging of the present invention is 1.2738,718, P20 or S55Cr.
It is using advantageous effect caused by above-mentioned technical proposal:The present invention can be produced with primary heating and be produced Product reduce 2~3 heating, are effectively improved production efficiency, shorten the pressing machine for operation time 45% or so, save resource, Reduce production cost, it is contemplated that save cost 50% or so.
Specific implementation mode
The present invention will be further described in detail with reference to the specific embodiments.
The die forging method of this module forging includes heating and pulling out process, and the technique of each process is as described below:
(1)Heating process:Steel ingot uses hot sending mode, hot sending temperature to be not less than 550 DEG C;It directly heats up, rises after reaching heating furnace Temperature is kept the temperature to 1220 DEG C~1240 DEG C, and the soaking time of common process is 7h, and this method technique is compared to common process heat preservation It is 9~15h that time, which increases about 30%,.
(2)The pulling process:Forging ratio≤2;Single depression distance is original section size(Highly)0.2~0.22 Times, pulling finishes 90 ° of overturning every time, then continues to pull out by above-mentioned single depression distance, pulls out 6~8 times altogether.
Embodiment 1:The die forging method of this module forging uses following concrete technologies.
(1)The module forging product that material is S55Cr is produced, steel ingot sectional dimension is 970*1726mm, module section ruler Very little is 660mm*1210mm.It is heat-fed 580 DEG C of temperature;It is heated to 1230 DEG C of heat preservation 9h.
(2)Use forging ratio for 1.85 direct drawing out forging technology, pulled out with 1200mm wide flat anvils, wide flat anvil Radius of corner be 120mm, length 2800mm.Every time pulling size is shown in Table 1.
Table 1:Every time pulling size(mm)
90 ° of overturning after every time has been pressed, then depress a time;Direct drawing out is to sectional dimension after the completion of pulling out 6 passages The module forging product of 660mm*1210mm sizes.
(3)Module forging obtained by the present embodiment meets SEP 1921 E/e grade requirements through ultrasonic examination.Gained module is forged Part inspection hardness, inspection result are:Steel ingot feeder head hardness HB 220~230, steel ingot mouth of a river hardness HB 210~225 meet and hand over The hardness HB 182~240 that goods requires.
Embodiment 2:The die forging method of this module forging uses following concrete technologies.
(1)The module forging product that material is 718 is produced, steel ingot sectional dimension is that 965*1719mm produces module section ruler Very little is 700*1200mm.It is heat-fed 550 DEG C of temperature;It is heated to 1220 DEG C of heat preservation 12h.
(2)Use forging ratio for 1.97 direct drawing out forging technology, pulled out with 1200mm wide flat anvils, wide flat anvil Radius of corner be 120mm, length 2800mm.Every time pulling size is shown in Table 2.
Table 2:Every time pulling size(mm)
90 ° of overturning after every time has been pressed, then depress a time;Direct drawing out is to sectional dimension after the completion of pulling out 6 passages The module forging product of 700mm*1200mm sizes.
(3)Module forging obtained by the present embodiment meets SEP 1921 E/e grade requirements through ultrasonic examination.Gained module is forged Part inspection hardness, inspection result are:Steel ingot feeder head hardness HBC 37.5~38, steel ingot mouth of a river hardness HBC 35~37 meet and hand over The hardness HRC 34~38 that goods requires.
Embodiment 3:The die forging method of this module forging uses following concrete technologies.
(1)The module forging product that material is 1.2738 is produced, steel ingot sectional dimension is that 950*1688mm produces module section Face size is 675*1190mm.It is heat-fed 560 DEG C of temperature;It is heated to 1240 DEG C of heat preservation 10h.
(2)Use forging ratio for 2 direct drawing out forging technology, pulled out with 1200mm wide flat anvils, wide flat anvil Radius of corner is 120mm, length 2800mm.Every time pulling size is shown in Table 3.
Table 3:Every time pulling size(mm)
90 ° of overturning after every time has been pressed, then depress a time;Direct drawing out is to sectional dimension after the completion of pulling out 7 passages The module forging product of 675mm*1190mm sizes.
(3)Module forging obtained by the present embodiment meets SEP 1921 E/e grade requirements through ultrasonic examination.Gained module is forged Part inspection hardness, inspection result are:Steel ingot feeder head hardness HBC 36~36.5, steel ingot mouth of a river hardness HBC 35~37 meet and hand over The hardness HRC 33~37 that goods requires;The steel ingot of same batch, the hardness of gained module forging are produced using conventional die forging method Value is:Steel ingot feeder head hardness HBC 34~36, steel ingot mouth of a river hardness HBC 33~36.
Embodiment 4:The die forging method of this module forging uses following concrete technologies.
(1)The module forging product that material is P20 is produced, steel ingot sectional dimension is that 960*1722mm produces module section ruler Very little is 700*1200mm.It is heat-fed 570 DEG C of temperature;It is heated to 1230 DEG C of heat preservation 15h.
(2)Use forging ratio for 1.9 direct drawing out forging technology, pulled out with 1200mm wide flat anvils, wide flat anvil Radius of corner be 120mm, length 2800mm.Every time pulling size is shown in Table 4.
Table 4:Every time pulling size(mm)
90 ° of overturning after every time has been pressed, then depress a time;Direct drawing out is to sectional dimension after the completion of pulling out 8 passages The module forging product of 700mm*1200mm sizes.
(3)Module forging obtained by the present embodiment meets SEP 1921 E/e grade requirements through ultrasonic examination.Gained module is forged Part inspection hardness, inspection result are:Steel ingot feeder head hardness HRC 33~34, steel ingot mouth of a river hardness HBC 32~34 meet delivery It is required that hardness HRC 31~36.

Claims (4)

1. a kind of die forging method of module forging comprising heating and pulling process, which is characterized in that the heating process:It will Heating Steel Ingots keep the temperature 9~15h to 1220 DEG C~1240 DEG C;
The pulling process:Forging ratio≤2;Single depression distance is 0.2~0.22 times of original section size.
2. a kind of die forging method of module forging according to claim 1, it is characterised in that:During the pulling, often Overturning continues to pull out after secondary pulling, pulls out 6~8 times altogether.
3. a kind of die forging method of module forging according to claim 1, it is characterised in that:In the heating process, steel The hot sending temperature of ingot is not less than 550 DEG C.
4. a kind of die forging method of module forging according to claim 1,2 or 3, it is characterised in that:The module forging Steel grade be 1.2738,718, P20 or S55Cr.
CN201810433030.XA 2018-05-08 2018-05-08 A kind of die forging method of module forging Active CN108705014B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110125314A (en) * 2019-05-17 2019-08-16 石钢京诚装备技术有限公司 A kind of forging method of high-carbon-chromium bearing steel forging stock
CN110756709A (en) * 2019-08-26 2020-02-07 石钢京诚装备技术有限公司 Forging method of forging material with diameter of 350-400mm
CN110814243A (en) * 2019-08-26 2020-02-21 石钢京诚装备技术有限公司 Forging method of 20CrNi3MnCuAl square steel
CN111250640A (en) * 2020-02-29 2020-06-09 河南中原特钢装备制造有限公司 Hot working method of large-diameter refined hot work die steel forging

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000015379A (en) * 1998-07-02 2000-01-18 Daido Steel Co Ltd Forging method of high carbon steel
CN101987343A (en) * 2009-08-07 2011-03-23 上海重型机器厂有限公司 Forging method of conical cylinder body of nuclear power equipment
CN103658479A (en) * 2012-09-12 2014-03-26 中航卓越锻造(无锡)有限公司 Technology for forging squeeze roller of cement roller press
CN105598328A (en) * 2016-01-18 2016-05-25 中钢集团邢台机械轧辊有限公司 Die steel forging production method
CN105643218A (en) * 2014-11-14 2016-06-08 重庆春顾机械制造有限公司 Machining method of gear parts of gearbox
CN107904510A (en) * 2017-11-21 2018-04-13 重庆文理学院 Comprehensive high performance hot die steel of one kind and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000015379A (en) * 1998-07-02 2000-01-18 Daido Steel Co Ltd Forging method of high carbon steel
CN101987343A (en) * 2009-08-07 2011-03-23 上海重型机器厂有限公司 Forging method of conical cylinder body of nuclear power equipment
CN103658479A (en) * 2012-09-12 2014-03-26 中航卓越锻造(无锡)有限公司 Technology for forging squeeze roller of cement roller press
CN105643218A (en) * 2014-11-14 2016-06-08 重庆春顾机械制造有限公司 Machining method of gear parts of gearbox
CN105598328A (en) * 2016-01-18 2016-05-25 中钢集团邢台机械轧辊有限公司 Die steel forging production method
CN107904510A (en) * 2017-11-21 2018-04-13 重庆文理学院 Comprehensive high performance hot die steel of one kind and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110125314A (en) * 2019-05-17 2019-08-16 石钢京诚装备技术有限公司 A kind of forging method of high-carbon-chromium bearing steel forging stock
CN110756709A (en) * 2019-08-26 2020-02-07 石钢京诚装备技术有限公司 Forging method of forging material with diameter of 350-400mm
CN110814243A (en) * 2019-08-26 2020-02-21 石钢京诚装备技术有限公司 Forging method of 20CrNi3MnCuAl square steel
CN111250640A (en) * 2020-02-29 2020-06-09 河南中原特钢装备制造有限公司 Hot working method of large-diameter refined hot work die steel forging

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