CN102371327A - Forging mould and method for high-speed steel spindle piece - Google Patents

Forging mould and method for high-speed steel spindle piece Download PDF

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Publication number
CN102371327A
CN102371327A CN2011104136632A CN201110413663A CN102371327A CN 102371327 A CN102371327 A CN 102371327A CN 2011104136632 A CN2011104136632 A CN 2011104136632A CN 201110413663 A CN201110413663 A CN 201110413663A CN 102371327 A CN102371327 A CN 102371327A
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China
Prior art keywords
forging
speed steel
blank
spare
patrix
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Pending
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CN2011104136632A
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Chinese (zh)
Inventor
陈绩
刘世李
戴新
梁光辉
阎小江
蓝江
杨宏伟
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CHONGQING TOOLS WORKS Co Ltd
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CHONGQING TOOLS WORKS Co Ltd
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Priority to CN2011104136632A priority Critical patent/CN102371327A/en
Publication of CN102371327A publication Critical patent/CN102371327A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a forging mould for a high-speed steel spindle piece, comprising an upper mould and a lower mould, wherein the lower mould is internally provided with a front cavity and a rear cavity; the internal diameter of the front cavity is bigger than that of the rear cavity; the external diameter of the upper mould is equal to the internal diameter of the front cavity; and the upper mould is provided with an upper cavity of which the internal diameter is equal to the internal diameter of the rear cavity. The invention also discloses a forging method for the high-speed steel spindle piece, which adopts the above forging mould for the high-speed steel spindle piece. The forging method comprises the following steps of: (1) heating blank: heating the high-speed steel blank of which the diameter is equal to the internal diameter of the rear cavity to 1120-1150 DEG C; 2) preheating the mould: preheating the upper mould and the lower mould to 80-120DEG C: (2) loading the mould: putting the heated blank into the lower mould, covering the upper mould on the lower mould, and putting the upper part of the blank in the upper cavity; and (4) forging.

Description

The forging mold of high-speed steel thin and long shafts spare and forging method
Technical field
The present invention relates to a kind of forging mold and the forging method that adopts this mould forging high-speed steel axle class part of high-speed steel axle class part, concrete is the forging mold of the high thin and long shafts spare of a kind of high speed and adopts this forging mold to forge thin and long shafts spare forging method highly just.
Background technology
Because the high-speed steel bad plasticity, mobile bad and molding effect is poor, be processed with the thin and long shafts spare that high-speed steel is processed if adopt with open die forging, it is low and geometric tolerances are big work efficiency to occur, and percent defective is higher.If adopt the forcing press die forging, often specification is many, quantity is few owing to thin and long shafts spare, can cause the die sinking expense very high.Therefore,, when adopting existing forging method to forge the thin and long shafts spare of processing by high-speed steel, have the shortcoming that causes percent defective height, converting cost method, can't guarantee product quality because high-speed steel has bad plasticity, flowability is bad and molding effect is poor.
Given this; The present invention is intended to propose a kind of forging mold of high-speed steel thin and long shafts spare and the forging method of the thin and long shafts spare that adopts this mould forging employing high-speed steel to process; This forging mold is simple in structure; Easy to use, the thin and long shafts spare that adopts this forging method to forge out has the low advantage of yield rate height, good product quality and processing cost.
Summary of the invention
The technical problem that the present invention will solve is the forging mold that proposes a kind of high-speed steel thin and long shafts spare; This forging mold is not only simple in structure; Easy to use, and can effectively satisfy the forging requirement of high-speed steel thin and long shafts spare, forge the better quality of the product that obtains.
Realize above-mentioned technical purpose; The forging mold of high-speed steel thin and long shafts spare of the present invention; Comprise upper die and lower die, be provided with ante-chamber and back cavity in the said counterdie, said ante-chamber internal diameter is greater than the internal diameter of back cavity; Said patrix external diameter equals said ante-chamber internal diameter, and is provided with the epicoele that internal diameter equates with said back cavity internal diameter in the said patrix.
Further, said upper die and lower die all adopt mould steel to process;
Further, the top of said patrix also is provided with the upper mould cover of diameter greater than said ante-chamber diameter, and said epicoele wall thickness 15-20mm;
The invention also discloses a kind of forging method that adopts the forging mold forging high-speed steel thin and long shafts spare of aforesaid high-speed steel thin and long shafts spare, comprise the steps:
1) blank heating: the high speed steel blank that diameter is equated with said back cavity internal diameter is heated to 1120-1150 ℃;
2) mould and die preheating: said upper die and lower die are preheated to 80-120 ℃;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, more said patrix is contained on the said counterdie, and the top of blank places in the said epicoele;
4) forge.
Further, the said the 2nd) in the step, be contained in said patrix on the said counterdie after, said patrix places in the said ante-chamber, and the said ante-chamber upper limb 5-10mm of the lower edge of said patrix distance;
Further, the said the 4th) in the step, the forging ratio of said blank is 2-2.5, promptly the maximum gauge behind the blank forging for the 2-2.5 of diameter before forging doubly;
Further, the said the 4th) after step is accomplished, adopt demoulding frock that blank is separated with said upper die and lower die;
Further, said demoulding frock is the column construction spare of diameter less than said back cavity diameter;
Further, the said the 4th) in the step, forge and said upper die and lower die are cooled off in water after accomplishing.
Beneficial effect of the present invention is: epicoele, ante-chamber and back cavity that the upper die and lower die of the forging mold of high-speed steel thin and long shafts spare of the present invention are used to hold blank all do not have tapering; Therefore; Forge the high-speed steel thin and long shafts spare that comes out and do not have tapering; Reduced allowance, economical with materials, and dimensional accuracy is high; Adopt mould steel to make upper die and lower die, not only expense is low, and can be applicable to the needs of small lot batch manufacture.
Description of drawings
Fig. 1 is the forging mold example structure sketch map of high-speed steel thin and long shafts spare of the present invention;
Fig. 2 is the blank structure sketch map of forging mold forging place of employing present embodiment high-speed steel thin and long shafts spare.
The specific embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1, be the forging mold example structure sketch map of high-speed steel thin and long shafts spare of the present invention.The forging mold of the high-speed steel thin and long shafts spare of present embodiment; Comprise patrix 1 and counterdie 2; Be provided with ante-chamber 3 and back cavity 4 in the said counterdie 2; Said ante-chamber 3 internal diameters are greater than said back cavity 4 internal diameters, and the external diameter of said patrix 1 equals said ante-chamber 3 internal diameters, and said patrix 1 is provided with the epicoele 7 that internal diameter equates with said back cavity 4 internal diameters.As shown in the figure; The top of said patrix 1 also is provided with the upper mould cover 5 of diameter greater than said ante-chamber 3 diameters, and said epicoele 7 wall thickness 15-20mm, upper mould cover 5 is set can prevents epicoele 7 distortion; The forging precision that obtains is higher; Epicoele 7 wall thickness are set to 15-20mm, can effectively guarantee the stress performance of mould, prevent epicoele 7 distortion.
Epicoele 7, ante-chamber 3 and back cavity 4 that the forging mold of the high-speed steel thin and long shafts spare of present embodiment is used to hold blank all do not have tapering, and therefore, forging the high-speed steel thin and long shafts spare 8 that comes out does not have tapering; Reduced allowance; Economical with materials, and dimensional accuracy is high, as shown in Figure 2.Therefore, the forging mold of the high-speed steel thin and long shafts spare of present embodiment is not only simple in structure, easy to use, and can effectively satisfy the forging requirement of high-speed steel thin and long shafts spare 8, forges the better quality of the product that obtains.
Further, said patrix 1 all adopts mould steel to process with counterdie 2, and in manufacturing process, does not quench; Adopt mould steel to make patrix 1 and counterdie 2; Not only expense is low, and can be applicable to the needs of small lot batch manufacture, does not quench then to make patrix 1 and counterdie 2 all have enough plasticity.
Be elaborated below in conjunction with the specific embodiment of the foregoing description to the forging method of high-speed steel thin and long shafts spare of the present invention.
The forging method of high-speed steel thin and long shafts spare of the present invention comprises the steps:
1) blank heating: diameter is heated to 1120-1150 ℃ with the high speed steel blank that said back cavity 4 internal diameters equate, makes blank have enough plasticity, be convenient to forge;
2) mould and die preheating: said patrix 1 is preheated to 80-120 ℃ with counterdie 2, makes mould have enough plasticity, prevent that mould from breaking in forging process;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, said patrix 1 is being contained on the said counterdie 2, and the top of blank places in the said epicoele 7.After being contained in said patrix 1 on the said counterdie 2; Said patrix 1 places in the said ante-chamber 3, and the said ante-chamber 3 upper limb 5-10mm of the lower edge of said patrix 1 distance, is convenient to upper die and lower die to the heart; The dimensional accuracy of the thin and long shafts spare 8 that feasible forging obtains is higher, and percent defective still less;
4) forge: after forging completion, adopt demoulding frock that blank is separated with said upper die and lower die, demoulding frock is the column construction spare of diameter less than said back cavity 4 diameter internal diameters, and counterdie is separated with blank; And after forging completion said patrix 1 is cooled off in water with counterdie 2, cooled patrix 1 can continue to use with counterdie 2; The forging ratio of said blank is 2-2.5, and promptly the maximum gauge behind the blank forging is 2-2.5 times of diameter before forging, and the employing forging ratio is 2-2.5, makes that the blank forging distortion is moderate, the blank type selecting of being more convenient for.
First embodiment
The forging method of present embodiment high-speed steel thin and long shafts spare comprises the steps:
1) blank heating: diameter is heated to 1150 ℃ with the high speed steel blank that said back cavity 4 internal diameters equate, makes blank have enough plasticity, be convenient to forge;
2) mould and die preheating: said patrix 1 is preheated to 120 ℃ with counterdie 2, makes mould have enough plasticity, prevent that mould from breaking in forging process;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, said patrix 1 is being contained on the said counterdie 2, and the top of blank places in the said epicoele 7.After being contained in said patrix 1 on the said counterdie 2; Said patrix 1 places in the said ante-chamber 3, and the said ante-chamber 3 upper limb 10mm of the lower edge of said patrix 1 distance, is convenient to upper die and lower die to the heart; The dimensional accuracy of the thin and long shafts spare 8 that feasible forging obtains is higher, and percent defective still less;
4) forge: after forging completion, adopt demoulding frock that blank is separated with said upper die and lower die, demoulding frock is the column construction spare of rainy said back cavity 4 internal diameters of diameter, and counterdie is separated with blank; And after forging completion said patrix 1 is cooled off in water with counterdie 2, cooled patrix 1 can continue to use with counterdie 2; The forging ratio of said blank is 2-2.5, and promptly the maximum gauge behind the blank forging is 2-2.5 times of diameter before forging, and the employing forging ratio is 2-2.5, makes that the blank forging distortion is moderate, the blank type selecting of being more convenient for, and the forging ratio of present embodiment selects 2.3 for use.
Adopt the forging method of the high-speed steel thin and long shafts spare of present embodiment; Not only can forge high-speed steel thin and long shafts spare; And forging the high-speed steel thin and long shafts spare precision height that obtains, waste product is few, and high-speed steel thin and long shafts spare is not have taper excessive between distortion place and distortion place; Can reduce allowance, economical with materials; Logical heating upper die and lower die can effectively increase the plasticity of upper die and lower die before forging; Make upper die and lower die break at the forging process middle part; After the forging upper die and lower die are cooled off in cold water, make upper die and lower die keep enough rigidity, and can be repeatedly used.
Second embodiment
The forging method of present embodiment high-speed steel thin and long shafts spare comprises the steps:
1) blank heating: diameter is heated to 1120 ℃ with the high speed steel blank that said back cavity 4 internal diameters equate, makes blank have enough plasticity, be convenient to forge;
2) mould and die preheating: said patrix 1 is preheated to 80 ℃ with counterdie 2, makes mould have enough plasticity, prevent that mould from breaking in forging process;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, said patrix 1 is being contained on the said counterdie 2, and the top of blank places in the said epicoele 7.After being contained in said patrix 1 on the said counterdie 2; Said patrix 1 places in the said ante-chamber 3, and the said ante-chamber 3 upper limb 5mm of the lower edge of said patrix 1 distance, is convenient to upper die and lower die to the heart; The dimensional accuracy of the thin and long shafts spare 8 that feasible forging obtains is higher, and percent defective still less;
4) forge: after forging completion, adopt demoulding frock that blank is separated with said upper die and lower die, demoulding frock is the column construction spare of diameter less than said back cavity 4 internal diameters, and counterdie is separated with blank; And after forging completion said patrix 1 is cooled off in water with counterdie 2, cooled patrix 1 can continue to use with counterdie 2; The forging ratio of said blank is 2-2.5, and promptly the maximum gauge behind the blank forging is 2-2.5 times of diameter before forging, and the employing forging ratio is 2-2.5, makes that the blank forging distortion is moderate, and the blank type selecting of being more convenient for, the forging ratio of present embodiment are 2.5.
Adopt the forging method of the high-speed steel thin and long shafts spare of present embodiment; Not only can forge high-speed steel thin and long shafts spare; And forging the high-speed steel thin and long shafts spare precision height that obtains, waste product is few, and high-speed steel thin and long shafts spare is not have taper excessive between distortion place and distortion place; Can reduce allowance, economical with materials; Logical heating upper die and lower die can effectively increase the plasticity of upper die and lower die before forging; Make upper die and lower die break at the forging process middle part; After the forging upper die and lower die are cooled off in cold water, make upper die and lower die keep enough rigidity, and can be repeatedly used.
The 3rd embodiment
The forging method of present embodiment high-speed steel thin and long shafts spare comprises the steps:
1) blank heating: diameter is heated to 1130 ℃ with the high speed steel blank that said back cavity 4 internal diameters equate, makes blank have enough plasticity, be convenient to forge;
2) mould and die preheating: said patrix 1 is preheated to 100 ℃ with counterdie 2, makes mould have enough plasticity, prevent that mould from breaking in forging process;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, said patrix 1 is being contained on the said counterdie 2, and the top of blank places in the said epicoele 7.After being contained in said patrix 1 on the said counterdie 2; Said patrix 1 places in the said ante-chamber 3, and the said ante-chamber 3 upper limb 7.5mm of the lower edge of said patrix 1 distance, is convenient to upper die and lower die to the heart; The dimensional accuracy of the thin and long shafts spare 8 that feasible forging obtains is higher, and percent defective still less;
4) forge: after forging completion, adopt demoulding frock that blank is separated with said upper die and lower die, demoulding frock is the column construction spare of diameter less than said back cavity 4 internal diameters, and counterdie is separated with blank; And after forging completion said patrix 1 is cooled off in water with counterdie 2, cooled patrix 1 can continue to use with counterdie 2; The forging ratio of said blank is 2-2.5, and promptly the maximum gauge behind the blank forging is 2-2.5 times of diameter before forging, and the employing forging ratio is 2-2.5, makes that the blank forging distortion is moderate, and the blank type selecting of being more convenient for, the forging ratio of present embodiment are 2.
Adopt the forging method of the high-speed steel thin and long shafts spare of present embodiment; Not only can forge high-speed steel thin and long shafts spare; And forging the high-speed steel thin and long shafts spare precision height that obtains, waste product is few, and high-speed steel thin and long shafts spare is not have taper excessive between distortion place and distortion place; Can reduce allowance, economical with materials; Logical heating upper die and lower die can effectively increase the plasticity of upper die and lower die before forging; Make upper die and lower die break at the forging process middle part; After the forging upper die and lower die are cooled off in cold water, make upper die and lower die keep enough rigidity, and can be repeatedly used.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (9)

1. the forging mold of a high-speed steel thin and long shafts spare; It is characterized in that: comprise upper die and lower die; Be provided with ante-chamber and back cavity in the said counterdie; Said ante-chamber internal diameter is greater than the internal diameter of said back cavity, and said patrix external diameter equals said ante-chamber internal diameter, and is provided with the epicoele that internal diameter equates with said back cavity internal diameter in the said patrix.
2. the forging mold of high-speed steel thin and long shafts spare according to claim 1 is characterized in that: said upper die and lower die all adopt mould steel to process.
3. the forging mold of high-speed steel thin and long shafts spare according to claim 1 and 2 is characterized in that: the top of said patrix also is provided with the upper mould cover of diameter greater than said ante-chamber diameter, and said epicoele wall thickness 15-20mm.
4. the forging mold of an employing such as each described high-speed steel thin and long shafts spare of claim 1-3 forges the forging method of high-speed steel thin and long shafts spare, it is characterized in that: comprise the steps:
1) blank heating: the high speed steel blank that diameter is equated with said back cavity internal diameter is heated to 1120-1150 ℃;
2) mould and die preheating: said upper die and lower die are preheated to 80-120 ℃;
3) dress mould: the blank after will heating earlier is positioned in the counterdie, more said patrix is contained on the said counterdie, and the top of blank places in the said epicoele;
4) forge.
5. the forging method of high-speed steel thin and long shafts spare according to claim 4; It is characterized in that: the said the 2nd) in the step; After being contained in said patrix on the said counterdie, said patrix places in the said ante-chamber, and the said ante-chamber upper limb 5-10mm of the lower edge of said patrix distance.
6. the forging mold of high-speed steel thin and long shafts spare according to claim 4 is characterized in that: the said the 4th) in the step, the forging ratio of said blank is 2-2.5, and promptly the maximum gauge behind the blank forging is 2-2.5 times of diameter before forging.
7. the forging method of high-speed steel thin and long shafts spare according to claim 4 is characterized in that: after the said the 4th) step is accomplished, adopt demoulding frock that blank is separated with said upper die and lower die.
8. the forging method of high-speed steel thin and long shafts spare according to claim 7 is characterized in that: said demoulding frock is the column construction spare of diameter less than said back cavity diameter.
9. the forging method of high-speed steel thin and long shafts spare according to claim 4 is characterized in that: the said the 4th) in the step, forging is cooled off said upper die and lower die after accomplishing in water.
CN2011104136632A 2011-12-13 2011-12-13 Forging mould and method for high-speed steel spindle piece Pending CN102371327A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439000A (en) * 2014-11-10 2015-03-25 沈阳黎明航空发动机(集团)有限责任公司 Loose tooling forging method for long support shaft type gear forged piece
CN104607588A (en) * 2015-01-16 2015-05-13 芜湖三联锻造有限公司 Novel long-shaft flange forge piece forging-forming method
CN105522088A (en) * 2016-01-19 2016-04-27 溧阳市金昆锻压有限公司 Die forging process of granulator spindle
CN110744001A (en) * 2019-12-09 2020-02-04 海安金锻工业有限公司 Forging process of long shaft
CN115625284A (en) * 2022-10-31 2023-01-20 江苏理研科技股份有限公司 Heat preservation device and method for long rod part in forging process

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JPH01139741A (en) * 1987-11-25 1989-06-01 Hitachi Metals Ltd Warm forging mold
JPH1139741A (en) * 1997-07-16 1999-02-12 Olympus Optical Co Ltd Optical information recording and reproducing device
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CN1853815A (en) * 2005-04-27 2006-11-01 中国科学院金属研究所 High speed-ratio hot pressing method for NiTi alloy piping billet and its special mould
CN101695806A (en) * 2009-09-18 2010-04-21 江苏太平洋精密锻造有限公司 Process for manufacturing backward gear of automobile gearbox
CN201644690U (en) * 2009-12-11 2010-11-24 上海工程技术大学 Mould for local upsetting forming of metal bar
CN201871662U (en) * 2010-10-12 2011-06-22 大连大显精密轴有限公司 Cold upsetting die of car windscreen wiper ball head
CN202037290U (en) * 2011-05-05 2011-11-16 宁波向阳坦科斯特电子有限公司 Ejection pressing bidirectional upsetting die

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139741A (en) * 1987-11-25 1989-06-01 Hitachi Metals Ltd Warm forging mold
JPH1139741A (en) * 1997-07-16 1999-02-12 Olympus Optical Co Ltd Optical information recording and reproducing device
US20030015016A1 (en) * 2001-07-19 2003-01-23 Showa Denko K.K. Die for forging rotor, forge production system and forging method using the die, and rotor
CN1853815A (en) * 2005-04-27 2006-11-01 中国科学院金属研究所 High speed-ratio hot pressing method for NiTi alloy piping billet and its special mould
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CN201871662U (en) * 2010-10-12 2011-06-22 大连大显精密轴有限公司 Cold upsetting die of car windscreen wiper ball head
CN202037290U (en) * 2011-05-05 2011-11-16 宁波向阳坦科斯特电子有限公司 Ejection pressing bidirectional upsetting die

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104439000A (en) * 2014-11-10 2015-03-25 沈阳黎明航空发动机(集团)有限责任公司 Loose tooling forging method for long support shaft type gear forged piece
CN104607588A (en) * 2015-01-16 2015-05-13 芜湖三联锻造有限公司 Novel long-shaft flange forge piece forging-forming method
CN105522088A (en) * 2016-01-19 2016-04-27 溧阳市金昆锻压有限公司 Die forging process of granulator spindle
CN110744001A (en) * 2019-12-09 2020-02-04 海安金锻工业有限公司 Forging process of long shaft
CN115625284A (en) * 2022-10-31 2023-01-20 江苏理研科技股份有限公司 Heat preservation device and method for long rod part in forging process
CN115625284B (en) * 2022-10-31 2023-11-03 江苏理研科技股份有限公司 Heat preservation device and method in long rod part forging process

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Application publication date: 20120314