CN206898300U - The hot forged mould of Wet land creeper tread - Google Patents

Abstract

The utility model discloses a kind of hot forged mould of Wet land creeper tread, casting is changed to forging molding, round steel or the forged shaping of square steel by the utility model, 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 during main frame walking, realizes part lightweight requirements；Hot forging belongs to formed solid, without waste gas and antiquated sand caused by casting smelting, cast, 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 shaping of large area thin-walled, improves working environment, and production efficiency class produces 400 450, and percent defective is not more than 0.1%.Produce equalization stable in batches.

Description

The hot forged mould of Wet land creeper tread

Technical field

It the utility model is related to forging molding technical field, more particularly to a kind of hot forged mould of Wet land creeper tread.

Background technology

Wet land creeper tread is the vital 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 productions, generally existing problems with：

1st, produce harmful smoke in production process and antiquated sand, production efficiency are relatively low.

2nd, there is the defects of stomata, sand holes in casting surface, and water-tenacity treatment, which produces crizzle, turns into fatigue crack source, pole It is easily caused low stress brittle fracture.

3rd, under alternate load effect, micro hole, the slag inclusion position of cast-internal can form stress concentration, and fragility occurs and breaks Split.

4th, creeper tread insufficient strength is cast, causes to be plastically deformed.Bolt hole position is embodied a concentrated reflection of, causes screw to elongate, Even it is broken.

5th, it is heavier to cast Wet land creeper tread weight, increase machine power consumption.

6th, tensile strength >=700MPa, yield strength >=500MPa, heat treatment hardness HB269-302, but situation about being broken It is very serious.

Utility model content

The utility model is above-mentioned to solve the problems, such as, there is provided a kind of hot forged mould of Wet land creeper tread.

In order to solve the above technical problems, the technical solution of the utility model is：The hot forged mould of Wet land creeper tread, including it is upper Mould and lower mould；Upper mould offers mould blocking die cavity, upper mould finish-forging die cavity, and upper mould is surrounded by mold lock button；Lower mould opens up There are lower mould blocking die cavity, a lower mould finish-forging die cavity, mold lock button under being surrounded by of lower mould；Upper mould blocking die cavity and upper mould finish-forging die cavity Parallel side-by-side is arranged, and lower mould blocking die cavity is arranged with lower mould finish-forging die cavity parallel side-by-side；Upper mould blocking die cavity, upper mould finish-forging type Chamber, lower mould blocking die cavity, the periphery of lower mould finish-forging die cavity are equipped with flash gutters；Be provided with lower mould blocking die cavity blocking ejection hole, Groove, lower mould finish-forging die cavity is interior to be provided with finish-forging ejection hole.Upper mould blocking die cavity, upper mould finish-forging die cavity, lower mould blocking die cavity, lower mould The concrete structure of finish-forging die cavity is by the structure of Wet land creeper tread come respective design.

Preferably, the flash gutters of upper mould blocking die cavity, upper mould finish-forging die cavity, lower mould blocking die cavity, lower mould finish-forging die cavity Bridge portion is highly 6mm, and bridge portion width is 16mm, and storehouse portion is highly 20mm.

Preferably, upper mould blocking die cavity, upper mould finish-forging die cavity, lower mould blocking die cavity, the storehouse portion of lower mould finish-forging die cavity share.

Preferably, four blockings are provided with lower mould blocking die cavity and eject hole.

Preferably, four finish-forgings are provided with lower mould finish-forging die cavity and eject hole.

Casting is changed to forging molding, round steel or the forged shaping of square steel by the utility model, forges dense structure, respectively Item mechanical performance significantly improves, tensile strength 1095MPa, yield strength 1042MPa, modifier treatment hardness HRC30-36, impact Toughness value 128, cross-sectional area reduce 31.5%, substantially reduce power consumption during main frame walking, realize part lightweight requirements； Hot forging belongs to formed solid, without waste gas and antiquated sand caused by casting smelting, cast, without stomata, sand holes, face crack, folder Slag and micro-crack etc. influence mechanical performance defect；Forging process simplifies, and shortens and forges each work step time, solves its large area thin-walled The problem of extremely difficult shaping, improve working environment, production efficiency class production 400-450 parts, percent defective is not more than 0.1%.Batch production Equalization stable.

Brief description of the drawings

Fig. 1 is the front view of lower mould；

Fig. 2 is the left view of lower mould；

Fig. 3 is the upward view of lower mould；

Fig. 4 is Fig. 3 K direction views；

Fig. 5 is Fig. 1 A-A direction views；

Fig. 6 is Fig. 1 B-B direction view；

Fig. 7 is the front view of upper mould；

Fig. 8 is the right view of upper mould；

Fig. 9 is the upward view of upper mould；

Figure 10 is Fig. 7 C-C direction views；

Figure 11 is the front view of pre- forging；

Figure 12 is the top view of pre- forging；

Figure 13 is the upward view of pre- forging；

Figure 14 is the front view of finish-forging part；

Figure 15 is the top view of finish-forging part；

Figure 16 is the upward view of finish-forging part.

Wherein：1st, blank, 2, pre- forging, 3, blocking ejection hole, 4, finish-forging ejection hole, 5, groove, 6, lower mould blocking die cavity, 7th, lower mould finish-forging die cavity, 8, lower mold lock button, 9, upper mold lock button, 10, upper mould finish-forging die cavity, 11, upper mould blocking die cavity.

Embodiment

As shown in Fig. 1-Figure 16, the hot forging method of Wet land creeper tread, comprise the following steps：A. blank 1 is placed in intermediate frequency sense Answer diathermanous in stove, temperature control is at 1150 ± 30 DEG C；B. the scale removal of blank 1 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 mould groove 5 In mould blocking die cavity 6, the upper descending strike blank 1 of mould, blocker forging；E. upper mould is up, the blocking knock-pin of lower mould blocking die cavity 6 Eject pre- forging 2；F. pre- forging 2 is moved on in lower mould finish-forging die cavity 7, the upper descending pre- forging 2 of strike of mould, finish forging；G. on Mould is up, the finish-forging knock-pin ejection finish-forging part of lower mould finish-forging die cavity 7；H. finish-forging part trimming.Blank 1 can be circle material, be put into Scale removal in scale breaker；Blank 1 can also be square stock, and chamfered edge is carried out on forging hammer or forcing press, 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 easy to blank mould under blocking to position.

As shown in Fig. 1-Figure 16, the hot forged mould of Wet land creeper tread, including upper die and lower die；Upper mould offers mould blocking Die cavity 11, upper mould finish-forging die cavity 10, upper mould are surrounded by mold lock button 9；It is whole that lower mould offers lower mould blocking die cavity 6, lower mould Forge chamber 7, mold lock button 8 under being surrounded by of lower mould；Upper mould blocking die cavity 11 is arranged with the upper parallel side-by-side of mould finish-forging die cavity 10, under Mould blocking die cavity 6 is arranged with the lower parallel side-by-side of mould finish-forging die cavity 7, and this mould two cavites structure can greatly shorten pre- forging 2 go to the time used in finish-forging die cavity from blocking die cavity, ensure very thin pre- forging 2 can carry out at higher temperatures finish-forging into Type；Upper mould blocking die cavity 11, upper mould finish-forging die cavity 10, lower mould blocking die cavity 6, the periphery of lower mould finish-forging die cavity 7 are equipped with overlap Groove；Blocking ejection hole 3, groove 5 are provided with lower mould blocking die cavity 6, the one side of groove 5 is used for positioning blank 1, another aspect conduct Extrude type groove and distribute material to center and both ends.Finish-forging ejection hole 4 is provided with lower mould finish-forging die cavity 7.Upper mould blocking die cavity 11, on Mould finish-forging die cavity 10, lower mould blocking die cavity 6, the bridge portion of flash gutters of lower mould finish-forging die cavity 7 are highly 6mm, and bridge portion width is 16mm, storehouse portion are highly 20mm.Upper mould blocking die cavity 11, upper mould finish-forging die cavity 10, lower mould blocking die cavity 6, lower mould finish-forging die cavity 7 Storehouse portion share.Blocking ejection hole 3, finish-forging ejection hole 4 are four.

It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model Within enclosing.

Claims (5)

1. the hot forged mould of Wet land creeper tread, it is characterised in that including upper die and lower die；Upper mould offers mould blocking die cavity (11), upper mould finish-forging die cavity (10), upper mould are surrounded by mold lock button (9)；Lower mould offer lower mould blocking die cavity (6), under Mould finish-forging die cavity (7), mold lock button (8) under being surrounded by of lower mould；Upper mould blocking die cavity (11) is flat with upper mould finish-forging die cavity (10) Row laid out in parallel, lower mould blocking die cavity (6) are arranged with lower mould finish-forging die cavity (7) parallel side-by-side；Upper mould blocking die cavity (11), upper mould Finish-forging die cavity (10), lower mould blocking die cavity (6), the periphery of lower mould finish-forging die cavity (7) are equipped with flash gutters；Lower mould blocking die cavity (6) blocking ejection hole (3), groove (5) are provided with, finish-forging ejection hole (4) is provided with lower mould finish-forging die cavity (7).

2. the hot forged mould of Wet land creeper tread according to claim 1, it is characterised in that the upper mould blocking die cavity (11), upper mould finish-forging die cavity (10), lower mould blocking die cavity (6), the bridge portion of flash gutters of lower mould finish-forging die cavity (7) are highly 6mm, Bridge portion width is 16mm, and storehouse portion is highly 20mm.

3. the hot forged mould of Wet land creeper tread according to claim 1, it is characterised in that the upper mould blocking die cavity (11), upper mould finish-forging die cavity (10), lower mould blocking die cavity (6), the storehouse portion of lower mould finish-forging die cavity (7) share.

4. the hot forged mould of Wet land creeper tread according to claim 1, it is characterised in that described lower mould blocking die cavity (6) four blockings are provided with and eject hole (3).

5. the hot forged mould of Wet land creeper tread according to claim 1, it is characterised in that described lower mould finish-forging die cavity (7) four finish-forgings are provided with and eject hole (4).