CN106734898A - The casting method of wear-resistant shot blast machine blade - Google Patents
The casting method of wear-resistant shot blast machine blade Download PDFInfo
- Publication number
- CN106734898A CN106734898A CN201611231001.2A CN201611231001A CN106734898A CN 106734898 A CN106734898 A CN 106734898A CN 201611231001 A CN201611231001 A CN 201611231001A CN 106734898 A CN106734898 A CN 106734898A
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- wear
- casting
- shot blast
- blast machine
- machine blade
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention provides a kind of casting method of wear-resistant shot blast machine blade, comprises the following steps：S1：Moulding is carried out using the casting of green-sand confrontation mill shot blast machine blade, and the casting of the wear-resistant shot blast machine blade is carried out making core using dry sand；S2：The casting lower surface parting of the wear-resistant shot blast machine blade is selected, and selects bottom gating；S3：It is determined that dimensional tolerance, casting weight tolerance, shrinkage factor, pattern draft, venthole size during casting；S4：Melting and cast are carried out to alloy；S5：After being poured into a mould by casting be placed in 900 °C insulation 0.5 hour after, from stove take out cooling, then 220 °C insulation tempering cool down afterwards within 0.5 hour it is cold.The casting method of the wear-resistant shot blast machine blade has the advantage that as follows：This method can obtain the tissue perpendicular to the growth of blade wear face direction, on the premise of production cost is not greatly improved, its wearability is had a distinct increment, and be more widely applied.
Description
Technical field
The present invention relates to specifically related to a kind of casting method of wear-resistant shot blast machine blade.
Background technology
Throwing blast cleaning technology has the advantages that efficiency high, effect be good, air pollution is easily administered and small investment, by increasingly
It is widely used in the every profession and trades such as machinery, automobile, aviation, it is applied not only to metal surface rust cleaning, cleaning, is also used for automobile dress
The reinforcing of the workpiece such as pool, gear, connecting rod, leaf spring, is additionally operable to the pitted skin before component shaping and coating chemical treatment.Impeller head
It is that abrasive material is dished out at a high speed using centrifugal action, impact workpiece surface causes surface scale, rusty scale, scab or impurity to be shelled
Fall, or make its surface deformation and produce compression.
However, impeller head is in practical engineering application, many problems are occurred in that, such as shot wheel, orientation in impeller head
Set, blade and liner plate etc. are all that part easy to wear, particularly shot blast machine blade are easy to abrasion, therefore, the use of shot-blasting machine
Life-span is severely limited, main this problem of research solution how of the present invention, research how cheap solution shot-blasting machine
Blade situation easy to wear.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art, there is provided a kind of casting method of wear-resistant shot blast machine blade,
The casting method of the wear-resistant shot blast machine blade can solve the above problems well.
To reach above-mentioned requirements, the present invention is adopted the technical scheme that：A kind of casting side of wear-resistant shot blast machine blade is provided
Method, the casting method of the wear-resistant shot blast machine blade comprises the following steps： S1：Using the casting of green-sand confrontation mill shot blast machine blade
Part carries out moulding, and carries out making core using the casting that shot blast machine blade is ground in dry sand confrontation；
S2：The casting lower surface parting of wear-resistant shot blast machine blade is selected, and selects bottom gating；
S3：It is determined that dimensional tolerance, casting weight tolerance, shrinkage factor, pattern draft, venthole size during casting；
S4：Melting and cast are carried out to alloy；
S5：After casting is placed in into 900 °C of insulations 0.5 hour after being poured into a mould, cooling is taken out from stove, then be incubated back at 220 °C
Fire cools down cold for 0.5 hour afterwards.
The casting method of the wear-resistant shot blast machine blade has the advantage that as follows：This method can be obtained perpendicular to blade wear
The tissue of face direction growth, on the premise of production cost is not greatly improved, makes its wearability have a distinct increment, using wider
It is general.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, the part of the application is constituted, at this
Same or analogous part, the schematic description and description of the application are represented using identical reference number in a little accompanying drawings
For explaining the application, the improper restriction to the application is not constituted.In the accompanying drawings：
Fig. 1 schematically shows the wear-resistant shot blast machine blade crystal growth direction and abrasion side according to the application one embodiment
To schematic diagram.
Specific embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with drawings and the specific embodiments, to this
Application is described in further detail.
In the following description, the reference to " one embodiment ", " embodiment ", " example ", " example " etc. shows
So the embodiment or example of description can include special characteristic, structure, characteristic, property, element or limit, but not each reality
Applying example or example all necessarily includes special characteristic, structure, characteristic, property, element or limit.In addition, reuse phrase " according to
One embodiment of the application " is not necessarily referring to identical embodiment although it is possible to refer to identical embodiment.
For the sake of simplicity, eliminated well known to a person skilled in the art some technical characteristics in below describing.
According to one embodiment of the application, there is provided a kind of casting method of wear-resistant shot blast machine blade, comprise the following steps：
S1：Moulding is carried out using the casting of green-sand confrontation mill shot blast machine blade, and using the casting of dry sand confrontation mill shot blast machine blade
Part carries out making core；
S2：The casting lower surface parting of wear-resistant shot blast machine blade is selected, and selects bottom gating；
S3：It is determined that dimensional tolerance, casting weight tolerance, shrinkage factor, pattern draft, venthole size during casting；
S4：Melting and cast are carried out to alloy；
S5：After casting is placed in into 900 °C of insulations 0.5 hour after being poured into a mould, cooling is taken out from stove, then be incubated back at 220 °C
Fire cools down cold for 0.5 hour afterwards.
According to one embodiment of the application, dry sand is dry type clay in the casting method of the wear-resistant shot blast machine blade
Sand, the green-sand is green sand.
According to one embodiment of the application, wear-resistant shot blast machine blade casting in the casting method of the wear-resistant shot blast machine blade
Upper nowel dimensional tolerance elect CT11 as.
According to one embodiment of the application, wear-resistant shot blast machine blade casting in the casting method of the wear-resistant shot blast machine blade
Weight tolerance grade be MT11.
According to one embodiment of the application, wear-resistant shot blast machine blade casting in the casting method of the wear-resistant shot blast machine blade
Shrinkage factor be 1.75%.
According to one embodiment of the application, wear-resistant shot blast machine blade casting in the casting method of the wear-resistant shot blast machine blade
Pattern draft choose 3 °.
According to one embodiment of the application, wear-resistant shot blast machine blade casting in the casting method of the wear-resistant shot blast machine blade
The bottom size of venthole take Φ 5mm.
According to one embodiment of the application, to carrying out melting to alloy in the casting method of the wear-resistant shot blast machine blade
When add regulation reagent, wherein regulation reagent composition it is as follows：C:2.7% to 3.3%, Si:0.5% to 0.6%, Mn:0.6% to
0.8%, Cr:15% to 20%, Mo:1.5% to 2%, Cu:1.5% to 2%, S are less than .06% less than 0.1%, P.
The casting method of the wear-resistant shot blast machine blade is specific as follows：The first step：The part is ironcasting, and selection clay-bonded sand is
Moulding and make core sand.Wherein moulding green-sand, makes core dry sand.Second step：Small lot is used in this secondary design
Production, the corresponding casting dimension of part is little, and weight is smaller, while in view of the simplicity of process implementing, reducing to equipment
Requirement, reduce many factors such as production cost, hand moulding is selected herein.3rd step：Select along casting lower surface parting,
Selection bottom gating.4th step：The determination of technological parameter, wherein：1st, the selection of dimensional tolerance, nowel then for CT9-
CT11, for this, upper nowel elects CT11 as.2nd, casting weight tolerance, the weight tolerance grade of casting is MT11.3rd, shrinkage factor,
The pattern shrinking rate of casting is 2.0%, it is contemplated that mo(u)ld bottom half is metal mold, can be expanded during heating, casting（White cast-iron）Shrinkage factor
It is 1.75%.4th, pattern draft, pattern draft chooses 3 °.6th, the design of venthole, the bottom size of venthole takes Φ 5mm.7
, core design, be to make simple to operate, improve production efficiency as far as possible for the relatively simple profile of part, initially setting
In meter, only top box needs to design core, and nowel need to only design metal mold.5th step：The melting and cast of alloy, due to
Specimen size is smaller, and required furnace charge amount is also smaller, thus can using using experiment with high-frequency induction furnace come melting, test
Furnace charge：Middle carbon Cr1, molybdenum-iron Mo552, steel scrap, carbon Mn iron M5.The absorptivity of alloying element is：C 100%, Si 100%,
Mn 90%, Cr 95%, Mo 100%, Cu 100%.The molten iron of melting is mainly used in pouring into a mould blade, molten iron overheat and pouring temperature
It is the key factor for influenceing casting anti-wear performance.The overtemperature of molten iron is preferably higher（Close to 1500 °C）, can become graphite
Carefully, and be conducive to remove oxidation impurities, reduce defect.Pouring temperature is 1350 °C -1400 °C, and pouring temperature too Gao Zehui makes
Casting crystalline grain is thick, unfavorable to performance；Pouring temperature is too low, and cast(ing) surface can play cold shut, elephant skin etc..
According to the working environment of throwing paddle, it is desirable to its must have high-wearing feature and certain toughness, to have more than
Performance, it is necessary to have corresponding tissue and structure, to obtain discontinuous scattered M7C3 types carbide and continuous matrix,
Can set about in terms of composition and technique two.The content of main adjustment C and Cr on composition, control and reduction Si, S and P's contains
Amount, adds appropriate alloying element such as Mo, Cu etc..Wherein：C:2.7% to 3.3%, Si:0.5% to 0.6%, Mn:0.6% to
0.8%, Cr:15% to 20%, Mo:1.5% to 2%, Cu:1.5% to 2%, S are less than .06% less than 0.1%, P.
In process aspect, by optimize technique scheme, the orientation column crystal perpendicular to wear surface is obtained, it is wear-resisting to increase its
Property, it can in addition contain swabbing（Such as dry powder paint）Etc. mode, improve its surface quality.Finally by suitable heat treatment：
After 900 °C of insulation 0.5h, air cooling is taken out from stove, then in 220 °C of insulation tempering 0.5h, air cooling is improved and adjusts it most afterwards
Whole performance.
In order to obtain the orientation column crystal perpendicular to wear surface, to increase its wearability, molten metal can be allowed along vertical
In the direction oriented growth of wear surface, the column crystal of solid matter is formed.As shown in figure 1, to form such solidification mode（Orientation is solidifying
Gu）, it is necessary to meet certain requirement：The lost of temperature has certain directionality and has certain thermograde in the direction,
Therefore, magnesium iron casting mold can be used（Metal mold）Mo(u)ld bottom half is done, mo(u)ld top half clay sand molding can meet its requirement.Program combination workpiece
Specific Service Environment, dexterously by adjusting component and process program, particularly technique that old knowledge is living, there is one
Fixed novelty and feasibility.
Embodiment described above only represents several embodiments of the invention, and its description is more specific and detailed, but not
It is understood that to be limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, not departing from
On the premise of present inventive concept, various modifications and improvements can be made, these belong to the scope of the present invention.Therefore this hair
Bright protection domain should be defined by the claim.
Claims (8)
1. a kind of casting method of wear-resistant shot blast machine blade, it is characterised in that comprise the following steps：
S1：Moulding is carried out using the casting of green-sand confrontation mill shot blast machine blade, and using dry sand to the wear-resistant shot-blasting machine
The casting of blade carries out making core；
S2：The casting lower surface parting of the wear-resistant shot blast machine blade is selected, and selects bottom gating；
S3：It is determined that dimensional tolerance, casting weight tolerance, shrinkage factor, pattern draft, venthole size during casting；
S4：Melting and cast are carried out to alloy；
S5：After casting is placed in into 900 °C of insulations 0.5 hour after being poured into a mould, cooling is taken out from stove, then be incubated back at 220 °C
Fire is cooled down for 0.5 hour afterwards.
2. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The dry sand is dry type
Clay-bonded sand, the green-sand is green sand.
3. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The wear-resistant shot-blasting machine leaf
The upper nowel dimensional tolerance of piece casting elects CT11 as.
4. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The wear-resistant shot-blasting machine leaf
The weight tolerance grade of piece casting is MT11.
5. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The wear-resistant shot-blasting machine leaf
The shrinkage factor of piece casting is 1.75%.
6. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The wear-resistant shot-blasting machine leaf
The pattern draft of piece casting chooses 3 °.
7. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：The wear-resistant shot-blasting machine leaf
The bottom size of the venthole of piece casting takes Φ 5mm.
8. the casting method of wear-resistant shot blast machine blade according to claim 1, it is characterised in that：To being melted to alloy
Regulation reagent is added during refining, the percentage that the regulation reagent composition therein accounts for gross mass as follows is as follows：C:2.7% to
3.3%, Si:0.5% to 0.6%, Mn:0.6% to 0.8%, Cr:15% to 20%, Mo:1.5% to 2%, Cu:1.5% to 2%, S are few
.06% is less than in 0.1%, P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231001.2A CN106734898A (en) | 2016-12-28 | 2016-12-28 | The casting method of wear-resistant shot blast machine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611231001.2A CN106734898A (en) | 2016-12-28 | 2016-12-28 | The casting method of wear-resistant shot blast machine blade |
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| CN106734898A true CN106734898A (en) | 2017-05-31 |
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| CN201611231001.2A Pending CN106734898A (en) | 2016-12-28 | 2016-12-28 | The casting method of wear-resistant shot blast machine blade |
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Citations (5)
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|---|---|---|---|---|
| CN1104562A (en) * | 1993-12-30 | 1995-07-05 | 北京科技大学 | Process for rolling white iron blades of ball thrower |
| CN102294435A (en) * | 2011-09-15 | 2011-12-28 | 山东开泰抛丸机械有限公司 | Method for casting and producing shot blasting machine blade based on firing mold on composite shell with utilization of chilled surface layer paint |
| CN103817607A (en) * | 2014-02-26 | 2014-05-28 | 江苏久联冶金机械制造有限公司 | Wear-resistant shot blasting machine blade and preparation method thereof |
| CN103934422A (en) * | 2014-04-08 | 2014-07-23 | 大丰市飞腾铸造机械有限公司 | Casting process of abrasion-resistant low-porosity shot blasting machine vane |
| CN104120329A (en) * | 2014-08-16 | 2014-10-29 | 罗建华 | CADI blade of shot blasting machine and production process of CADI blade |
-
2016
- 2016-12-28 CN CN201611231001.2A patent/CN106734898A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104562A (en) * | 1993-12-30 | 1995-07-05 | 北京科技大学 | Process for rolling white iron blades of ball thrower |
| CN102294435A (en) * | 2011-09-15 | 2011-12-28 | 山东开泰抛丸机械有限公司 | Method for casting and producing shot blasting machine blade based on firing mold on composite shell with utilization of chilled surface layer paint |
| CN103817607A (en) * | 2014-02-26 | 2014-05-28 | 江苏久联冶金机械制造有限公司 | Wear-resistant shot blasting machine blade and preparation method thereof |
| CN103934422A (en) * | 2014-04-08 | 2014-07-23 | 大丰市飞腾铸造机械有限公司 | Casting process of abrasion-resistant low-porosity shot blasting machine vane |
| CN104120329A (en) * | 2014-08-16 | 2014-10-29 | 罗建华 | CADI blade of shot blasting machine and production process of CADI blade |
Non-Patent Citations (6)
| Title |
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| 张克义等: "《金工实习》", 31 August 2012, 南京大学出版社 * |
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Application publication date: 20170531 |