CN109822048A - A kind of husky bucket casting technique of digging - Google Patents
A kind of husky bucket casting technique of digging Download PDFInfo
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- CN109822048A CN109822048A CN201910196517.5A CN201910196517A CN109822048A CN 109822048 A CN109822048 A CN 109822048A CN 201910196517 A CN201910196517 A CN 201910196517A CN 109822048 A CN109822048 A CN 109822048A
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- digging
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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 digging sand bucket casting technique based on above-mentioned material, comprising the following steps: S100: mulling is configured to molding sand in proportion；S200: molding moulding；S300: steel are placed in electric furnace and are heated to smelting temperature by melting；S400: casting first preheats the type chamber for digging husky bucket mold sand mold before casting；S500: knockout, knockout is handled after casting keeps the temperature 72 hours in mold sand mold after casting complete；S600: tempering；S700: cleaning carries out shot blasting on surface processing to husky bucket is dug.The present invention provides a kind of casting method for digging husky bucket, and the welding before being replaced by sand casting avoids the problem of raw material welding performance difference, and uses monoblock cast to be formed and dig husky bucket, 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 casting technique 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, the constituent content mass percent of material are as follows: C:0.52-
0.81%, Mn:2.0-2.50%, Cr:0.35-0.85%, Ni:0.63-0.89%, surplus Fe；In order to improve the hard of material
Degree and wearability, improve the manganese content in material；But manganese content is excessively high, and it is low to will lead to corrosion resistance, increases again in use
The content of chromium and nickel in material, to improve the corrosion resistance of material；In this way, the material is widely used, by client's favorable comment；It is real
In order to reduce cost in the use of border, often three is formed by welding and digs husky bucket；But because manganese contains in material when use
It measures excessively high, crystal grain is promoted to increase, thus will lead to the sensibility increase to quenching overheating, be easy to produce stress concentration, commissure
Internal stress it is big, be easy to produce brittle fracture when being impacted, improve and dig husky cost；Through detecting, weld yield strength is
207MPa-224MPa。
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 digging based on above-mentioned material
Sand bucket casting technique reduces its object is to improve the integral strength for digging husky bucket and digs husky cost.
Technical solution proposed by the present invention is: a kind of husky bucket casting technique of digging, comprising the following steps:
S100: mulling is configured to molding sand in proportion；
S200: molding moulding makes mold according to the size and shape for digging husky bucket；
S300: steel are placed in electric furnace and are heated to smelting temperature by melting；
S400: casting first preheats the type chamber for digging husky bucket mold sand mold before casting, is then poured；
S500: knockout, knockout is handled after casting keeps the temperature 72 hours in mold sand mold after casting complete, and cut-fill emits after knockout
Mouthful；
S600: the husky bucket of molding digging is put into tempering furnace and carries out tempering by tempering；
S700: cleaning carries out shot blasting on surface processing to husky bucket is dug.
The present invention provides a kind of casting method for digging husky bucket, and the welding before being replaced by sand casting avoids former material
Expect the problem of welding performance difference, and formed using monoblock cast and dig sand bucket, improve the integral strength for digging husky bucket, reduction is dug husky
Cost solves the problems, such as that the husky bucket service life of digging in the prior art is low.
Specific embodiment
A kind of husky bucket casting technique of digging of the present invention is further described combined with specific embodiments below, a kind of husky bucket of digging
Casting technique, comprising the following steps:
S100: quartz sand, sawdust, sand mold bonding agent are configured to molding sand using quartz sand as roughing sand by mulling；In this application, it is
The gas permeability in potassium steel casting process is promoted, uses quartz sand in the application, wherein the granularity of quartz sand is 45 mesh to 65
Mesh；In order to improve the deformability of sand mold, sawdust is also mixed in quartz sand, sawdust is 1%-3% in quartz sand inner volume accounting；This
It further include sand mold bonding agent in application, sand mold bonding agent is stirred using bentonite, mud powder and water, can reduce cost；In order to
Degree of adhesion is improved, wherein bentonite, mud powder and water 1:1:1.3 in mass ratio, by using the quality such as bentonite and mud powder
The proportion of score, moreover it is possible to improve the gas permeability of sand mold, while the quality proportioning of mud powder and water uses 1:1.3, can also improve casting
The gas permeability of part；In order to improve the plasticity of molding sand, roughing sand and sand mold bonding agent press quality proportioning and use 5.1 in the application:
0.7；Sand mixer is poured into after mixing according to said ratio to stir evenly, and new molding sand is constituted with this.
S200: molding moulding makes mold according to the size shape for digging husky bucket, mold is placed on to the inside of molding sand box, is obtained
To the husky bucket mold sand mold of digging；
S300: steel are placed in electric furnace and are heated to smelting temperature by melting, when the temperature in smelting furnace reach 1520 DEG C~
At 1580 DEG C, refining agent refining is added, melts alloy sufficiently and forms molten steel, while grain refiner can also be added, to melting
Tissue is refined in furnace, thin in addition refining agent and crystal grain since single melting can be poured the husky bucket of 2-3 part digging in the application
20-25min is stood to molten steel in furnace after agent；The uniformity of its molten steel is higher；In this application, bottom plate, otic placode and connecting plate
It is all potassium steel, therefore smelting temperature selection, at 1520 DEG C~1580 DEG C, Smelting Effect is best；Wherein grain refiner additional amount
Be the 0.01%~0.03% of Metal Weight, grain refiner may be selected hexafluorotitanic acid potassium (K2TiF6) or titanium carbide (TiC) or
The granularity of a combination thereof, grain refiner is 150~300nm, can effectively improve the molten steel uniformity；TiC particle and austenite
With symbiosis and epibiosis, can fining austenite grains, increase substantially metal toughness；Nanoscale TIC increases crystallization nuclei, hence it is evident that
Ground refinement crystal grain and change matrix knit structure, and can be formed in the tissue and be uniformly distributed Hard Inclusion, hinder translation gliding and abrasion,
Significantly improve intensity, hardness, harden ability and the toughness of steel material.
S400: casting first preheats the type chamber for digging husky bucket mold sand mold before casting, and preheating temperature is 120~150
DEG C, in this application by air cooking, 120~150 DEG C of hot blast temperature, baking time 2-3 hours, maintenance chamber 120~
It is poured at 150 DEG C, the duration of pouring 50~60 seconds, molten steel is allowed to flow rapidly into type chamber.
S500: knockout, knockout is handled after casting keeps the temperature 72 hours in mold sand mold after casting complete, is cut and is poured after knockout
Riser is infused, the husky bucket of molding digging is constituted.
S600: the husky bucket of molding digging is put into tempering furnace and carries out tempering by tempering, and wherein tempering temperature controls
At 630~670 DEG C, crystal grain is refined, removes residual stress, husky bucket is dug after the completion of tempering and naturally cools to room temperature.
S700: cleaning carries out shot blasting on surface processing to husky bucket is dug, promotes the fatigue strength for digging husky bucket.
The present invention provides a kind of casting method for digging husky bucket, and the welding before being replaced by sand casting avoids former material
Expect the problem of welding performance difference, and formed using monoblock cast and dig sand bucket, improve the integral strength for digging husky bucket, reduction is dug husky
Cost solves the problems, such as that the husky bucket service life of digging in the prior art is low.
In the first embodiment of the present invention, it is handled according to previous process, wherein smelting temperature is 1520 in S300
DEG C, 120 DEG C of preheating temperature in S400, tempering temperature is 630 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be the composition of austenite and needle-shaped cementite, yield strength 282MPa.
It in the second embodiment of the present invention, is handled according to previous process, wherein smelting temperature is 1580 in S300
DEG C, 150 DEG C of preheating temperature in S400, tempering temperature is 670 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be the composition of needle-shaped cementite and pearlite, yield strength 315MPa.
In the third embodiment of the present invention, it is handled according to previous process, wherein smelting temperature is 1540 in S300
DEG C, 130 DEG C of preheating temperature in S400, tempering temperature is 645 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be austenite, the composition of needle-shaped cementite and pearlite, yield strength 324MPa.
In the fourth embodiment of the present invention, it is handled according to previous process, wherein smelting temperature is 1560 in S300
DEG C, 140 DEG C of preheating temperature in S400, tempering temperature is 700 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be austenite, the composition of needle-shaped cementite and pearlite, yield strength 327MPa.
By above-mentioned implementation it is found that after by process provided by the present application, yield strength is significantly improved, and product
Crystal image organization is uniform, and the integral strength for digging husky bucket is high, reduces and digs husky cost.
It in the fifth embodiment of the present invention, is handled according to previous process, wherein smelting temperature is 1519 in S300
DEG C, 119 DEG C of preheating temperature in S400, tempering temperature is 629 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be ferrite, the composition of austenite and pearlite, yield strength 246MPa.
It in the sixth embodiment of the present invention, is handled according to previous process, wherein smelting temperature is 1519 in S300
DEG C, 119 DEG C of preheating temperature in S400, tempering temperature is 629 DEG C in S600: crystal phase detection, product tissue master are passed through to its product
It to be the composition of ferrite and austenite, yield strength 231MPa.
By above-mentioned experiment it is found that the high manganese steel material according to used by the application, adjustment smelting temperature, preheating temperature,
After tempering temperature, yield strength is changed greatly, and in above-mentioned 5th embodiment and sixth embodiment, yield strength obviously drops
It is low, also it is easy to happen brittle fracture.
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 (7)
1. a kind of husky bucket casting technique of digging, it is characterised in that: the following steps are included:
S100: quartz sand, sawdust, sand mold bonding agent are configured to molding sand using quartz sand as raw material by mulling；
S200: molding moulding makes mold according to the size and shape for digging husky bucket；
S300: steel are placed in electric furnace and are heated to smelting temperature by melting；
S400: casting first preheats the type chamber for digging husky bucket mold sand mold before casting, is then poured；
S500: knockout, knockout is handled after casting keeps the temperature 72 hours in mold sand mold after casting complete, and cut-fill emits after knockout
Mouthful；
S600: the husky bucket of molding digging is put into tempering furnace and carries out tempering by tempering；
S700: cleaning carries out shot blasting on surface processing to husky bucket is dug.
2. the husky bucket casting technique of digging according to claim 1, it is characterised in that: the granularity of the quartz sand is 45 mesh to 65
Mesh；And sawdust is also mixed in quartz sand, sawdust is 1%-3% in quartz sand inner volume accounting.
3. the husky bucket casting technique of digging according to claim 1, which is characterized in that further include sand mold bonding agent, the sand mold
Bonding agent includes bentonite, mud powder and water, bentonite, mud powder and water 1:1:1.3 in mass ratio.
4. the husky bucket casting technique of digging according to claim 3, which is characterized in that the roughing sand and sand mold bonding agent press quality
Proportion uses 5.1:0.7.
5. the husky bucket casting technique of digging according to claim 1, which is characterized in that the smelting temperature is 1520 DEG C~1580
℃。
6. the husky bucket casting technique of digging according to claim 1, which is characterized in that the preheating temperature is 120~150 DEG C.
7. the husky bucket casting technique of digging according to claim 1, which is characterized in that the tempering temperature is 630~670 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910196517.5A CN109822048A (en) | 2019-03-15 | 2019-03-15 | A kind of husky bucket casting technique of digging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910196517.5A CN109822048A (en) | 2019-03-15 | 2019-03-15 | A kind of husky bucket casting technique of digging |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215623A (en) * | 2007-12-27 | 2008-07-09 | 大连交通大学 | Surface seasoning treatment method for increasing timang cutting processability |
| US20100037493A1 (en) * | 2008-08-12 | 2010-02-18 | Kim Jong-Soo | Wear-Resistant, Impact-Resistant Excavator Bucket Manufactured by Casting and Manufacturing Method Thereof |
| CN101862812A (en) * | 2010-02-05 | 2010-10-20 | 姚会元 | Integral cast steel dredge bucket |
| CN103409695A (en) * | 2013-08-16 | 2013-11-27 | 洛阳钢丰机械制造有限公司 | Composite material pouring-casted bucket and its production technology and production device |
| CN106001439A (en) * | 2016-06-06 | 2016-10-12 | 湖北万鑫精密铸锻股份有限公司 | Integral casting digging bucket and manufacturing method thereof |
| CN108160939A (en) * | 2016-12-07 | 2018-06-15 | 卡特彼勒公司 | For manufacturing the system and method for scraper bowl |
-
2019
- 2019-03-15 CN CN201910196517.5A patent/CN109822048A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215623A (en) * | 2007-12-27 | 2008-07-09 | 大连交通大学 | Surface seasoning treatment method for increasing timang cutting processability |
| US20100037493A1 (en) * | 2008-08-12 | 2010-02-18 | Kim Jong-Soo | Wear-Resistant, Impact-Resistant Excavator Bucket Manufactured by Casting and Manufacturing Method Thereof |
| CN101862812A (en) * | 2010-02-05 | 2010-10-20 | 姚会元 | Integral cast steel dredge bucket |
| CN103409695A (en) * | 2013-08-16 | 2013-11-27 | 洛阳钢丰机械制造有限公司 | Composite material pouring-casted bucket and its production technology and production device |
| CN106001439A (en) * | 2016-06-06 | 2016-10-12 | 湖北万鑫精密铸锻股份有限公司 | Integral casting digging bucket and manufacturing method thereof |
| CN108160939A (en) * | 2016-12-07 | 2018-06-15 | 卡特彼勒公司 | For manufacturing the system and method for scraper bowl |
Non-Patent Citations (1)
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| 杨淑蓉等: "高锰钢挖斗体的研制", 《石化技术与应用》 * |
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