CN107096863B - The hot forging method and its hot forged mould of Wet land creeper tread - Google Patents
The hot forging method and its hot forged mould of Wet land creeper tread Download PDFInfo
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- CN107096863B CN107096863B CN201710354514.0A CN201710354514A CN107096863B CN 107096863 B CN107096863 B CN 107096863B CN 201710354514 A CN201710354514 A CN 201710354514A CN 107096863 B CN107096863 B CN 107096863B
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- forging
- lower die
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- chamber
- upper mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of hot forging method of Wet land creeper tread and its hot forged moulds, casting and forming is changed to forging molding, round steel or the forged molding of square steel by the present invention, forges dense structure, every mechanical performance significantly improves, tensile strength 1095MPa, yield strength 1042MPa, modifier treatment hardness HRC30-36, notched bar impact strength 128, cross-sectional area reduces 31.5%, substantially reduces power consumption when host walking, realizes part lightweight requirements；Hot forging belongs to formed solid, without exhaust gas and antiquated sand that casting smelting, casting generate, influences mechanical performance defect without stomata, sand holes, face crack, slag inclusion and micro-crack etc.；Forging process simplifies, and shortens and forges each work step time, solves the problems, such as its extremely difficult molding of large area thin-walled, improves working environment, and production efficiency class produces 400-450 part, and rejection rate is not more than 0.1%.Produce equalization stable in batches.
Description
Technical field
The present invention relates to forging molding technical field more particularly to the hot forging methods and its hot-forging die of a kind of Wet land creeper tread
Tool.
Background technique
Wet land creeper tread is the key part that engineering machinery works in Wetland Environment, and use condition is extremely severe, confrontation
The mechanical performance index such as tensile strength, yield strength, impact flexibility and hardness require very high.Current Wet land creeper tread uses cast steel
Technique production, generally existing following problems:
1, harmful smoke is generated in production process and antiquated sand, production efficiency are lower.
2, casting surface the defects of there are stomatas, sand holes, water-tenacity treatment, which generates crizzle, becomes fatigue crack source, pole
Easily lead to low stress brittle fracture.
3, under alternate load effect, miniature hole, the slag inclusion position of cast-internal will form stress concentration, and it is disconnected that brittleness occurs
It splits.
4, casting creeper tread intensity is inadequate, causes to be plastically deformed.Bolt hole position is embodied a concentrated reflection of, screw hole is caused to elongate,
Even it is broken.
5, casting Wet land creeper tread weight ratio is heavier, increases machine power consumption.
6, tensile strength >=700MPa, yield strength >=500MPa, heat treatment hardness HB269-302, but the case where fracture
It is very serious.
Summary of the invention
The present invention is to solve the problem above-mentioned, and provides the hot forging method and its hot forged mould of a kind of Wet land creeper tread.
In order to solve the above technical problems, the technical scheme is that the hot forging method of Wet land creeper tread, including walk as follows
It is rapid: a. blank is placed in it is diathermanous in intermediate frequency furnace, temperature control at 1150 ± 30 DEG C；B. the blank after will be diathermanous removes oxidation
Skin；C. it is fully warmed-up hot forged mould, hot forged mould temperature maintains 200-300 DEG C；D. the blank after scale removal is passed through
It is intracavitary that the positioning of lower die groove is put into the pre- forge of lower die, and upper mold downlink hits blank, blocker forging；E. upper mold uplink, lower die blocking
The blocking knock-pin of type chamber ejects pre- forging；F. it is intracavitary pre- forging to be moved on into lower die finish-forging type, upper mold downlink hits pre- forging, eventually
Forging molding；G. the finish-forging knock-pin of upper mold uplink, lower die finish-forging type chamber ejects finish-forging part；H. finish-forging part trimming.
Preferably, blank is circle material.
Preferably, blank is put into scale removal in scale breaker.
Preferably, blank is square stock.
Preferably, blank carries out chamfered edge on forging hammer or press machine.
A kind of hot forged mould in the hot forging method applied to above-mentioned Wet land creeper tread, including upper die and lower die；Upper mold
The pre- forge chamber of upper mold, upper mold finish-forging type chamber are offered, upper mold is surrounded by upper mold lock；Lower die offers the pre- forge of lower die
Chamber, lower die finish-forging type chamber, lower die are surrounded by lower die lock；The pre- forge chamber of upper mold and upper mold finish-forging type chamber parallel side-by-side are arranged
Cloth, the pre- forge chamber of lower die and lower die finish-forging type chamber parallel side-by-side are arranged；The pre- forge chamber of upper mold, upper mold finish-forging type chamber, lower die blocking
Type chamber, lower die finish-forging type chamber periphery be equipped with flash gutters；The intracavitary blocking that is equipped with of the pre- forge of lower die ejects hole, groove, and lower die is whole
The intracavitary finish-forging that is equipped with of forge ejects hole.The pre- forge chamber of upper mold, upper mold finish-forging type chamber, the pre- forge chamber of lower die, lower die finish-forging type chamber
Specific structure is accordingly designed by the structure of Wet land creeper tread.
Preferably, the flash gutters of the pre- forge chamber of upper mold, upper mold finish-forging type chamber, the pre- forge chamber of lower die, lower die finish-forging type chamber
Bridge portion height is 6mm, and bridge portion width is 16mm, and storehouse portion height is 20mm.
Preferably, the pre- forge chamber of upper mold, upper mold finish-forging type chamber, the pre- forge chamber of lower die, the storehouse portion of lower die finish-forging type chamber are shared.
Preferably, the pre- forge of lower die it is intracavitary set there are four blocking eject hole.
Preferably, lower die finish-forging type it is intracavitary set there are four finish-forging eject hole.
Casting and forming is changed to forging molding, round steel or the forged molding of square steel by the present invention, forges dense structure, Ge Xiangji
Tool performance significantly improves, tensile strength 1095MPa, yield strength 1042MPa, modifier treatment hardness HRC30-36, impact flexibility
Value 128, cross-sectional area reduce 31.5%, substantially reduce power consumption when host walking, realize part lightweight requirements；Hot forging
Belong to formed solid, without casting smelting, casting generate exhaust gas and antiquated sand, without stomata, sand holes, face crack, slag inclusion and
Micro-crack etc. influences mechanical performance defect；Forging process simplifies, and shortens and forges each work step time, it is extremely difficult to solve its large area thin-walled
The problem of molding, improves working environment, and production efficiency class produces 400-450 part, and rejection rate is not more than 0.1%.Batch production is balanced
Stablize.
Detailed description of the invention
Fig. 1 is the main view of lower die；
Fig. 2 is the left view of lower die；
Fig. 3 is the bottom view of lower die；
Fig. 4 is the K direction view of Fig. 3；
Fig. 5 is the A-A direction view of Fig. 1；
Fig. 6 is the B-B direction view of Fig. 1；
Fig. 7 is the main view of upper mold；
Fig. 8 is the right view of upper mold；
Fig. 9 is the bottom view of upper mold；
Figure 10 is the C-C direction view of Fig. 7；
Figure 11 is the main view of pre- forging；
Figure 12 is the top view of pre- forging；
Figure 13 is the bottom view of pre- forging；
Figure 14 is the main view of finish-forging part；
Figure 15 is the top view of finish-forging part；
Figure 16 is the bottom view of finish-forging part.
Wherein: 1, blank, 2, pre- forging, 3, blocking ejection hole, 4, finish-forging ejection hole, 5, groove, 6, the pre- forge chamber of lower die,
7, lower die finish-forging type chamber, 8, lower die lock, 9, upper mold lock, 10, upper mold finish-forging type chamber, 11, the pre- forge chamber of upper mold.
Specific embodiment
As shown in Fig. 1-Figure 16, the hot forging method of Wet land creeper tread includes the following steps: that blank 1 is placed in intermediate frequency sense by a.
Answer it is diathermanous in furnace, temperature control at 1150 ± 30 DEG C；B. 1 scale removal of blank after will be diathermanous；C. it is fully warmed-up hot-forging die
Tool, hot forged mould temperature maintain 200-300 DEG C；D. the blank 1 after scale removal is put into down by the positioning of lower die groove 5
In the pre- forge chamber 6 of mould, upper mold downlink hits blank 1, blocker forging；E. upper mold uplink, the blocking knock-pin of the pre- forge chamber 6 of lower die
Eject pre- forging 2；F. pre- forging 2 is moved on in lower die finish-forging type chamber 7, upper mold downlink hits pre- forging 2, finish forging；G. on
The finish-forging knock-pin of mould uplink, lower die finish-forging type chamber 7 ejects finish-forging part；H. finish-forging part trimming.Blank 1 can be circle material, be put into
Scale removal in scale breaker；Blank 1 or square stock, chamfered edge is carried out on forging hammer or press machine, on the one hand may be used
To remove surface scale, near round cross-section blank on the other hand is provided for blocking, is positioned convenient for blank in blocking lower die.
As shown in Fig. 1-Figure 16, a kind of hot forged mould in the hot forging method applied to Wet land creeper tread, including upper mold and
Lower die；Upper mold offers the pre- forge chamber 11 of upper mold, upper mold finish-forging type chamber 10, and upper mold is surrounded by upper mold lock 9；Lower die opens up
There are the pre- forge chamber 6 of lower die, lower die finish-forging type chamber 7, lower die is surrounded by lower die lock 8；The pre- forge chamber 11 of upper mold and upper mold are whole
The arrangement of 10 parallel side-by-side of forge chamber, the pre- forge chamber 6 of lower die are arranged with 7 parallel side-by-side of lower die finish-forging type chamber, and this mould two-chamber is simultaneously
Array structure can greatly shorten pre- forging 2 and go to the time used in finish-forging type chamber from pre- forge chamber, guarantee that very thin pre- forging 2 can
Finish forging is carried out at higher temperatures；The pre- forge chamber 11 of upper mold, upper mold finish-forging type chamber 10, the pre- forge chamber 6 of lower die, lower die are whole
The periphery of forge chamber 7 is equipped with flash gutters；Blocking is equipped in the pre- forge chamber 6 of lower die and ejects hole 3, groove 5, and 5 one side of groove is used
To position blank 1, on the other hand it is used as and squeezes type groove to center and both ends distribution material.Finish-forging is equipped in lower die finish-forging type chamber 7
Eject hole 4.The bridge of the flash gutters of the pre- forge chamber 11 of upper mold, upper mold finish-forging type chamber 10, the pre- forge chamber 6 of lower die, lower die finish-forging type chamber 7
Portion's height is 6mm, and bridge portion width is 16mm, and storehouse portion height is 20mm.The pre- forge chamber 11 of upper mold, upper mold finish-forging type chamber 10, lower die
Pre- forge chamber 6, the storehouse portion of lower die finish-forging type chamber 7 are shared.It is four that blocking, which ejects hole 3, finish-forging ejection hole 4,.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. the hot forging method of Wet land creeper tread, which comprises the steps of:
A. blank (1) is placed in it is diathermanous in intermediate frequency furnace, temperature control at 1150 ± 30 DEG C；
B. blank (1) scale removal after will be diathermanous；
C. it is fully warmed-up hot forged mould, hot forged mould temperature maintains 200-300 DEG C；Hot forged mould includes upper die and lower die, on
Mould is cavity plate, and lower die is punch-pin, and groove (5) is arranged in the pre- forge chamber (6) of lower die along pre- forge chamber (6) longitudinal centre line of lower die
Convex portion on；
D. blank (1) is circle material or square stock, and the blank (1) after scale removal is put into down by lower die groove (5) positioning
In the pre- forge chamber (6) of mould, upper mold downlink hits blank (1), blocker forging；
E. the blocking knock-pin of upper mold uplink, the pre- forge chamber (6) of lower die ejects pre- forging (2)；
F. pre- forging (2) is moved on in lower die finish-forging type chamber (7), upper mold downlink hits pre- forging (2), finish forging；
G. the finish-forging knock-pin of upper mold uplink, lower die finish-forging type chamber (7) ejects finish-forging part；
H. finish-forging part trimming.
2. the hot forging method of Wet land creeper tread according to claim 1, which is characterized in that the blank (1) is put into oxygen
Change scale removal in skin descaling machine.
3. the hot forging method of Wet land creeper tread according to claim 1, which is characterized in that the square stock is on press machine
Carry out chamfered edge.
4. the hot forged mould in a kind of hot forging method applied to Wet land creeper tread described in claim 1, which is characterized in that packet
Include upper die and lower die；Upper mold offers the pre- forge chamber (11) of upper mold, upper mold finish-forging type chamber (10), and upper mold is surrounded by mold lock
It detains (9)；Lower die offers the pre- forge chamber (6) of lower die, lower die finish-forging type chamber (7), and lower die is surrounded by lower die lock (8)；On
The pre- forge chamber (11) of mould and upper mold finish-forging type chamber (10) parallel side-by-side are arranged, the pre- forge chamber (6) of lower die and lower die finish-forging type chamber (7)
Parallel side-by-side arrangement；The pre- forge chamber (11) of upper mold, upper mold finish-forging type chamber (10), the pre- forge chamber (6) of lower die, lower die finish-forging type chamber
(7) periphery is equipped with flash gutters；It is equipped with blocking in the pre- forge chamber (6) of lower die and ejects hole (3), groove (5), lower die finish-forging type chamber
(7) finish-forging ejection hole (4) is equipped in.
5. the hot forged mould of Wet land creeper tread according to claim 4, which is characterized in that the pre- forge chamber of upper mold
(11), the pre- forge chamber (6) of upper mold finish-forging type chamber (10), lower die, lower die finish-forging type chamber (7) flash gutters bridge portion height be 6mm,
Bridge portion width is 16mm, and storehouse portion height is 20mm.
6. the hot forged mould of Wet land creeper tread according to claim 4, which is characterized in that the pre- forge chamber of upper mold
(11), the pre- forge chamber (6) of upper mold finish-forging type chamber (10), lower die, the storehouse portion of lower die finish-forging type chamber (7) are shared.
7. the hot forged mould of Wet land creeper tread according to claim 4, which is characterized in that the pre- forge chamber of the lower die
(6) it is set in there are four blocking ejection hole (3), it is reverse frustoconic that blocking, which ejects hole (3),.
8. the hot forged mould of Wet land creeper tread according to claim 4, which is characterized in that the lower die finish-forging type chamber
(7) finish-forging ejection hole (4) there are four being set in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354514.0A CN107096863B (en) | 2017-05-19 | 2017-05-19 | The hot forging method and its hot forged mould of Wet land creeper tread |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354514.0A CN107096863B (en) | 2017-05-19 | 2017-05-19 | The hot forging method and its hot forged mould of Wet land creeper tread |
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| CN107096863A CN107096863A (en) | 2017-08-29 |
| CN107096863B true CN107096863B (en) | 2019-11-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465367A (en) * | 2018-11-05 | 2019-03-15 | 北京北方车辆集团有限公司 | A kind of creeper tread forging method |
| CN111069512B (en) * | 2019-12-16 | 2021-02-26 | 北京北方车辆集团有限公司 | Forming method of track shoe for track type thin-shell vehicle |
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| CN107096863A (en) | 2017-08-29 |
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Denomination of invention: Hot forging method and hot forging die for wetland track shoes Effective date of registration: 20230417 Granted publication date: 20191126 Pledgee: China Minsheng Bank Co.,Ltd. Dalian Branch Pledgor: DALIAN HAWK KING FORGING-CASTING INDUSTRIAL CO.,LTD. Registration number: Y2023210000077 |