CN109881120A - A kind of husky bucket of digging - Google Patents
A kind of husky bucket of digging Download PDFInfo
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- CN109881120A CN109881120A CN201910196547.6A CN201910196547A CN109881120A CN 109881120 A CN109881120 A CN 109881120A CN 201910196547 A CN201910196547 A CN 201910196547A CN 109881120 A CN109881120 A CN 109881120A
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- bottom plate
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- otic placode
- digging
- connecting plate
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Abstract
Low to solve the problems, such as to dig husky bucket service life in the prior art, the present invention proposes a kind of husky bucket of digging, including bottom plate, otic placode and connecting plate；The constituent content mass percent of bottom plate material are as follows: C0.22-0.31%, V1.2-1.4%, Mn1.26-1.50%, Si≤0.37%, P≤0.02%, Cr0.25-0.55%, Mo0.21-0.34%, Ni0.73-1.06%, surplus Fe；By the way that the ingredients such as Si, Cr, Ni, P, Mo, V are added in bottom plate, welding performance is improved, solves the problems, such as that the husky bucket service life of digging in the prior art is low.
Description
Technical field
The present invention relates to husky bucket casting technology field is dug, it is related specifically to a kind of husky bucket of digging.
Background technique
Digging husky bucket is dredger accessory, also referred to as coal tub, hopper, digging spoon, including bottom plate, otic placode and connecting plate, wherein
Bottom plate two sides are respectively connected with otic placode, and base plate rear end is connected with connecting plate, and connecting plate two sides are connect with otic placode, such bottom plate,
Otic placode and connecting plate constitute the husky bucket of digging；It is used to dig the grains of sand according to riverbed or sea bed, and application environment is severe.Such as excavating object
Adamantine thing can be encountered when material, dug husky bucket at this time and be subjected to huge impact force；Simultaneously at riverbed or the bed bottom of sea bed
With a large amount of corrosive corporations, and causes to dig husky bucket and have high corrosion resistance；In order to reduce the maintenance frequency for digging husky bucket, mention
It rises and digs husky efficiency, need to dig the husky wearability with higher that struggles against.
Husky bottom sheet is dug in the prior art selects potassium steel, manganese content is 2.0% -2.5%, because manganese content is high,
Hardness is high, wearability is strong, by client's favorable comment；Otic placode and connecting plate mainly play support and connection function, can in order to reduce cost
Selection steel alloy is made；Since bottom plate is different from otic placode or connection plate material, in order to reduce cost in actual use, often pass through weldering
Three is connected into the husky bucket of digging by the mode connect；Since the welding performance of potassium steel is poor, it is easy to produce stress concentration, although it has
Higher wearability, but the internal stress of commissure is big, is easy to produce brittle fracture when being impacted, such as by 1 kilogram of weight
Impact test is carried out to it in 2m eminence, can see crackle by naked eyes after test, and crack width is greater than 4mm, ballistic work
47J；The service life that digging sand struggles against is reduced, is needed repairing using after 86 hours；It improves and digs husky cost.
Summary of the invention
Low to solve the problems, such as to dig husky bucket service life in the prior art, the present invention proposes a kind of husky bucket of digging, and purpose exists
In changing the material for digging husky bottom sheet and otic placode, the welding performance for digging husky bucket is improved, further increases the integral strength for digging husky bucket,
It reduces and digs husky cost.
Technical solution proposed by the present invention is: a kind of husky bucket of digging, including bottom plate, otic placode and connecting plate；The bottom plate material
Constituent content mass percent are as follows: C:0.22-0.31%, V:1.2-1.4%, Mn:1.26-1.50%, Si :≤
0.37%, P :≤0.02%, Cr:0.25-0.55%, Mo:0.21-0.34%, Ni:0.73-1.06%, surplus Fe；Institute
State the constituent content mass percent of otic placode or connecting plate material are as follows: C:1.07-1.24%, V:0.82-0.98%, Mn:
1.07-1.22%, Si:0.15-0.26%, P :≤0.02%, Cr:0.21-0.37%, Mo:0.17-0.28%, Ni:
0.34-0.79%, surplus Fe.
In this application, by the way that Si is added in bottom plate, to improve the corrosion resistance of bottom plate；Cr and Ni is added, equally
The corrosion resistance that can be improved bottom plate, prevents bottom plate from getting rusty；P is added, can be improved the hardness of bottom plate；Mo is added, can be improved
The intensity and wear-resisting property of bottom plate；V is added, thinning microstructure crystal grain improves intensity and toughness；Containing for Mn in bottom plate is reduced simultaneously
Amount allows otic placode or connecting plate and bottom plate material capability phase on the contrary, promote the content of Mn in otic placode or connecting plate in this application
Closely, welding performance is improved, further increases and digs the husky integral strength to struggle against, reduces and digs husky cost, solve and dig sand in the prior art
The low problem of the service life that struggles against.
Specific embodiment
A kind of husky bucket of digging of the present invention is further described combined with specific embodiments below, a kind of husky bucket of digging, including bottom
Plate, otic placode and connecting plate；The constituent content mass percent of the bottom plate material are as follows: C:0.22-0.31%, V:1.2-
1.4%, Mn:1.26-1.50%, Si :≤0.37%, P :≤0.02%, Cr:0.25-0.55%, Mo:0.21-
0.34%, Ni:0.73-1.06%, surplus Fe；The constituent content mass percent of the otic placode or connecting plate material are as follows: C:
1.07-1.24%, V:0.82-0.98%, Mn:1.07-1.22%, Si:0.15-0.26%, P :≤0.02%, Cr:
0.21-0.37%, Mo:0.17-0.28%, Ni:0.34-0.79%, surplus Fe.
In this application, by the way that Si is added in bottom plate or otic placode or connecting plate, to improve the corrosion resistance of bottom plate, together
When be able to ascend the toughness of bottom plate, if silicone content increases excessively high, reduce the welding performance of steel plate；
By the way that Cr or Ni is added, it equally can be improved the corrosion resistance of bottom plate, prevent bottom plate from getting rusty, if chromium content or nickel contain
It measures excessively high, is then easy to produce hardened structure, reduces steel plate welding performance；Cr can inhibit and reduce the precipitation of pro-eutectoid ferrite,
The crystal grain of fining ferrite is conducive to the content for improving acicular ferrite, significantly improves intensity, hardness and wearability, improve
The brittle transition temperature and temper brittleness of steel；Ni can improve the toughness and intensity of cast steel with reinforced ferrite, and especially low temperature rushes
Toughness is hit, improve steel to the drag of fatigue and reduces steel to the sensibility of notch, reduces ductile-brittle transition temperature；
By addition P, the hardness of bottom plate can be improved, if phosphorus content is excessively high, the moulding of bottom plate and toughness are decreased obviously,
Bottom plate is also easy to produce brittle deformation；By the way that Mo is added, the intensity and wear-resisting property of bottom plate can be improved, and improve the corrosion-resistant of steel
Property, molybdenum belong to materials in short supply, and price is more expensive, and in order to reduce cost, molybdenum should not add excessively；By the way that V is added, thinning microstructure is brilliant
Grain improves intensity and toughness；The carbide that vanadium and carbon are formed, can be improved hydrogen attack resistance at high temperature under high pressure.
In the application first embodiment, the constituent content mass percent of bottom plate material are as follows: C:0.22%, V:1.2%,
Mn:1.26%, Si :≤0.37%, P :≤0.02%, Cr:0.25%, Mo:0.21%, Ni:0.73%, surplus Fe；Otic placode
Or the constituent content mass percent of connecting plate material are as follows: C:1.07%, V:0.82%, Mn:1.07%, Si:0.15%, P :≤
0.02%, Cr:0.21%, Mo:0.17%, Ni:0.34%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material
It is tested after being welded, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| First embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 880 | 38.7 | 60.1 |
| Otic placode or connecting plate | 855 | 42.3 | 58.4 |
The digging sand bucket being welded by above-mentioned plate, after 110 hours, weld is able to observe that by naked eyes
Crackle, crack width are less than 2.6mm, moreover it is possible to continue to use, improve service life.
In the application second embodiment, the constituent content mass percent of bottom plate material are as follows: C:0.31%, V:1.4%,
Mn:1.5%, Si :≤0.37%, P :≤0.02%, Cr:0.55%, Mo:0.34%, Ni:1.06%, surplus Fe；Otic placode or
The constituent content mass percent of connecting plate material are as follows: C:1.24%, V:0.98%, Mn:1.22%, Si:0.26%, P :≤
0.02%, Cr:0.37%, Mo:0.28%, Ni:0.79%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material
It is tested after being welded, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| Second embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 890 | 40.1 | 61.5 |
| Otic placode or connecting plate | 862 | 42.7 | 59.3 |
The digging sand bucket being welded by above-mentioned plate, after 130 hours, weld is able to observe that by naked eyes
Crackle, crack width are less than 2mm, moreover it is possible to continue to use, improve service life.
In the application 3rd embodiment, the constituent content mass percent of bottom plate material are as follows: C:0.31%, V:1.4%,
Mn:1.5%, Si :≤0.37%, P :≤0.02%, Cr:0.55%, Mo:0.34%, Ni:1.06%, surplus Fe；Otic placode
Or the constituent content mass percent of connecting plate material are as follows: C:1.24%, V:0.98%, Mn:1.22%, Si:0.26%, P :≤
0.02%, Cr:0.37%, Mo:0.28%, Ni:0.79%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material
It is tested after being welded, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| 3rd embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 901 | 40.8 | 62.7 |
| Otic placode or connecting plate | 871 | 43.0 | 60.6 |
The digging sand bucket being welded by above-mentioned plate, after 130 hours, weld is observed by the naked eye less than splitting
Line, moreover it is possible to continue to use, improve service life.
In the application fourth embodiment, the constituent content mass percent of bottom plate material are as follows: C:0.25%, V:1.26%,
Mn:1.35%, Si :≤0.37%, P :≤0.02%, Cr:0.35%, Mo:0.27%, Ni:0.91%, surplus Fe；Otic placode
Or the constituent content mass percent of connecting plate material are as follows: C:1.14%, V:0.87%, Mn:1.12%, Si:0.19%, P :≤
0.02%, Cr:0.27%, Mo:0.22%, Ni:0.53%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material into
It is tested after row welding, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| Fourth embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 910 | 41.5 | 63.1 |
| Otic placode or connecting plate | 880 | 43.2 | 60.4 |
The digging sand bucket being welded by above-mentioned plate, by repetition test, using effect is best, uses 170 hours
Afterwards, weld is able to observe that crackle, crack width are less than 1.7mm by naked eyes, moreover it is possible to continue to use, improve using the longevity
Life.
In the 5th embodiment of the application, the constituent content mass percent of bottom plate material are as follows: C:0.28%, V:1.34%,
Mn:1.42%, Si :≤0.37%, P :≤0.02%, Cr:0.43%, Mo:0.31%, Ni:1.01%, surplus Fe；Otic placode
Or the constituent content mass percent of connecting plate material are as follows: C:1.21%, V:0.93%, Mn:1.23%, Si:0.22%, P :≤
0.02%, Cr:0.32%, Mo:0.25%, Ni:0.73%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material into
It is tested after row welding, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| 5th embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 900 | 41.3 | 63.0 |
| Otic placode or connecting plate | 872 | 43.4 | 60.7 |
The digging sand bucket being welded by above-mentioned plate, by repetition test, using effect is best, uses 140 hours
Afterwards, weld is able to observe that crackle, crack width are less than 2.1mm by naked eyes, moreover it is possible to continue to use, improve using the longevity
Life.
In the sixth embodiment of the application, the constituent content mass percent of bottom plate material are as follows: C:0.21%, V:
1.1%, Mn:1.25%, Si:0.38%, P:0.03%, Cr:0.24%, Mo:0.2%, Ni:0.72%, surplus Fe；Ear
The constituent content mass percent of plate or connecting plate material are as follows: C:1.06%, V:0.81%, Mn:1.06%, Si:0.14%, P:
0.03%, Cr:0.2%, Mo:0.16%, Ni:0.33%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material into
It is tested after row welding, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| Sixth embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 733 | 33.9 | 52.4 |
| Otic placode or connecting plate | 817 | 35.6 | 51.7 |
Through the foregoing embodiment it is found that being lower than after bottom plate material or otic placode material or connecting plate material composition change
When the value range of the application, yield strength, surface hardness and ballistic work are substantially reduced；The integral strength for digging husky bucket is reduced, is mentioned
Height digs husky cost.
In the 7th embodiment of the application, the constituent content mass percent of bottom plate material are as follows: C:0.32%, V:
1.5%, Mn:1.51%, Si:0.38%, P:0.03%, Cr:0.56%, Mo:0.35%, Ni:1.07%, surplus Fe；Ear
The constituent content mass percent of plate or connecting plate material are as follows: C:1.25%, V:0.99%, Mn:1.23%, Si:0.27%, P:
0.02%, Cr:0.38%, Mo:0.29%, Ni:0.8%, surplus Fe；By the bottom plate, otic placode and connecting plate of above-mentioned material into
It is tested after row welding, tests its surface hardness, yield strength and ballistic work respectively, be listed as follows.
| 7th embodiment | Yield strength (MPa) | Surface hardness (HRC) | Ballistic work (J) |
| Bottom plate | 758 | 35.2 | 53.8 |
| Otic placode or connecting plate | 821 | 36.5 | 52.9 |
Through the foregoing embodiment it is found that being higher than after bottom plate material or otic placode material or connecting plate material composition change
When the value range of the application, yield strength, surface hardness and ballistic work are relatively low, and the effect for improving and digging the husky bucket service life is not achieved
Fruit.
Further, husky bucket quality is dug in order to improve, in this application the welding procedure between bottom plate, otic placode and connecting plate
It is as follows:
S100, two-sided bevel is carried out to the commissure of bottom plate, otic placode and connecting plate, is convenient for welding, improves welding quality,
In this application without fusion welding, therefore groove should not be too large, and it is best that groove top width is less than 5mm；
S200, carry out spot welding at groove and fix, spot welding height no more than base material, spot welding length 5mm-10mm it
Between, for fixing bottom plate, otic placode and the relative position of connecting plate；
S300, bottom welding is carried out by argon arc welding, welding current 250A improves speed of welding, and uses high current
Welding can guarantee that weld seam penetrates, it is ensured that welding quality, while it is welded by high current and melts base material, no longer it is filled
Weldering；
S400, cosmetic welding is carried out in commissure, guarantees surfacing, weld seam is beautiful；
High tempering processing is carried out after S500, welding, 630-650 DEG C of tempering temperature, tempering time 2 hours, is allowed after welding
Ferritic structure is more uniform, while allowing the intracorporal carbon precipitation of Ovshinsky and carbide precipitate, improves welding quality, improves wear-resistant
Ability.
Room temperature is naturally cooled to after tempering, forms finished product.It is solid and reliable so to dig husky bucket weld, long service life.
Above-mentioned is presently preferred embodiments of the present invention, it should be understood that those skilled in the art can root without creative work
Pass through logic analysis, reasoning or experiment etc. on the basis of existing technology according to design of the invention and obtain related art scheme,
Therefore these related art schemes all should be in the protection scope of present claims.
Claims (4)
1. a kind of husky bucket of digging, including bottom plate, otic placode and connecting plate；It is characterized in that, the constituent content quality of the bottom plate material
Percentage are as follows: C:0.22-0.31%, V:1.2-1.4%, Mn:1.26-1.50%, Si :≤0.37%, P :≤0.02%, Cr:
0.25-0.55%, Mo:0.21-0.34%, Ni:0.73-1.06%, surplus Fe；The element of the otic placode or connecting plate material
Content mass percent are as follows: C:1.07-1.24%, V:0.82-0.98%, Mn:1.07-1.22%, Si:0.15-0.26%,
P :≤0.02%, Cr:0.21-0.37%, Mo:0.17-0.28%, Ni:0.34-0.79%, surplus Fe.
2. digging husky bucket according to claim 1, which is characterized in that the constituent content mass percent of bottom plate material are as follows: C:
0.25%, V:1.26%, Mn:1.35%, Si :≤0.37%, P :≤0.02%, Cr:0.35%, Mo:0.27%, Ni:0.91%, surplus
For Fe；The constituent content mass percent of otic placode or connecting plate material are as follows: C:1.14%, V:0.87%, Mn:1.12%, Si:
0.19%, P :≤0.02%, Cr:0.27%, Mo:0.22%, Ni:0.53%, surplus Fe.
3. digging husky bucket according to claim 1, which is characterized in that the constituent content mass percent of bottom plate material are as follows: C:
0.28%, V:1.34%, Mn:1.42%, Si :≤0.37%, P :≤0.02%, Cr:0.43%, Mo:0.31%, Ni:1.01%, surplus
For Fe；The constituent content mass percent of otic placode or connecting plate material are as follows: C:1.21%, V:0.93%, Mn:1.23%, Si:
0.22%, P :≤0.02%, Cr:0.32%, Mo:0.25%, Ni:0.73%, surplus Fe.
4. the husky bucket of the digging according to any of the above-described claim, which is characterized in that the welding procedure for digging husky bucket is as follows:
S100, two-sided bevel is carried out to the commissure of bottom plate, otic placode and connecting plate, groove top width is less than 5mm；
S200, progress spot welding is fixed at groove, and spot welding height is no more than base material, and spot welding length is between 5 mm -10mm；
S300, bottom welding, welding current 250A are carried out by argon arc welding；
S400, cosmetic welding is carried out in commissure；
Progress high tempering processing after S500, welding, 630-650 DEG C of tempering temperature, tempering time 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196547.6A CN109881120A (en) | 2019-03-15 | 2019-03-15 | A kind of husky bucket of digging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196547.6A CN109881120A (en) | 2019-03-15 | 2019-03-15 | A kind of husky bucket of digging |
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| CN109881120A true CN109881120A (en) | 2019-06-14 |
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ID=66932514
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| CN201910196547.6A Pending CN109881120A (en) | 2019-03-15 | 2019-03-15 | A kind of husky bucket of digging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008214736A (en) * | 2007-03-08 | 2008-09-18 | Jfe Steel Kk | Wear resistant steel sheet having excellent workability, and method for producing the same |
| JP2008297571A (en) * | 2007-05-29 | 2008-12-11 | Jfe Steel Kk | Abrasion resistant steel sheet having excellent workability, and its production method |
| CN101688283A (en) * | 2007-05-29 | 2010-03-31 | 杰富意钢铁株式会社 | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
| CN201756713U (en) * | 2010-08-03 | 2011-03-09 | 合肥中达机械制造有限公司 | Ridge buster used for hydraulic excavator |
| CN105499762A (en) * | 2015-12-17 | 2016-04-20 | 国网山东省电力公司电力科学研究院 | Welding process capable of avoiding P92 steel weld metal micro cracks |
-
2019
- 2019-03-15 CN CN201910196547.6A patent/CN109881120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008214736A (en) * | 2007-03-08 | 2008-09-18 | Jfe Steel Kk | Wear resistant steel sheet having excellent workability, and method for producing the same |
| JP2008297571A (en) * | 2007-05-29 | 2008-12-11 | Jfe Steel Kk | Abrasion resistant steel sheet having excellent workability, and its production method |
| CN101688283A (en) * | 2007-05-29 | 2010-03-31 | 杰富意钢铁株式会社 | Abrasion-resistant steel sheet having excellent processability, and method for production thereof |
| CN201756713U (en) * | 2010-08-03 | 2011-03-09 | 合肥中达机械制造有限公司 | Ridge buster used for hydraulic excavator |
| CN105499762A (en) * | 2015-12-17 | 2016-04-20 | 国网山东省电力公司电力科学研究院 | Welding process capable of avoiding P92 steel weld metal micro cracks |
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