CN113235003B - Composite process casting shovel blade plate for loader and production process thereof - Google Patents
Composite process casting shovel blade plate for loader and production process thereof Download PDFInfo
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- CN113235003B CN113235003B CN202110511676.7A CN202110511676A CN113235003B CN 113235003 B CN113235003 B CN 113235003B CN 202110511676 A CN202110511676 A CN 202110511676A CN 113235003 B CN113235003 B CN 113235003B
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- 238000005266 casting Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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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)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses a shovel blade plate for loader casting by composite process and its production process, the production process is to smear Cr, Ni alloy powder prepared in proportion in advance with thickness of 6mm, fix to the working area of the mould box corresponding to the shovel blade plate, after mould closing, pour the molten steel of chemical composition needed by the melted main body area into the mould cavity by casting strip riser to obtain the needed casting; after the casting is cooled, cutting a dead head, polishing and flattening the casting, and then carrying out normalizing heat treatment to obtain the casting. The invention meets the requirements of the scraper blade plate on better wear resistance, higher impact toughness and weldability required by connection with a bucket body.
Description
Technical Field
The invention relates to the technical field of shovel blade plates for loaders, in particular to a compound process casting shovel blade plate for a loader and a production process thereof.
Background
The blade plate is a key component of the loader and is mounted at the front of the loader bucket to perform the function of cutting the material. This requires the shovel blade plate to have high wear resistance and impact toughness, i.e. the wear resistance and impact toughness directly affect the working efficiency of the whole machine and the economic benefit of the user. The high wearability of shovel blade plate not only can reduce the change number of times of shovel blade plate, can also save operating time and saving fund for the user, and the impact resistance toughness of shovel blade plate is high, and the blade can not the turn-up when the loader meets hard material in work, has improved the tunnelling power and the work efficiency of loader. Therefore, the problems to be solved at present are to improve the wear resistance and impact toughness of the shovel blade plate and reduce the production cost.
Disclosure of Invention
The invention aims to solve the problems and provide a composite process casting shovel blade plate for a loader and a production process thereof, so that the obtained shovel blade plate has higher wear resistance and impact toughness and good weldability, thereby improving the operating efficiency of the loader and prolonging the service life.
The invention realizes the purpose through the following technical scheme:
the loader casts the shovel blade plate by the composite technology, and the element content of the main body area of the shovel blade plate is C: 0.16% -0.26%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 0.90% -1.20%, Mo: 0.20% -0.30%, Fe: 96.87% -97.74%; the element content of the working area of the shovel blade plate is C: 2.5% -3.5%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 18% -23%, Ni: 0.8% -1.2%, Mo: 0.20% -0.30%, Fe: 70.63-77.5 percent.
The material selection of the shovel blade plate cast by the composite process for the loader is provided by the inventor after numerous research and exploration and a large number of practical application practices.
The shovel blade plate of the loader is a narrow and long plate with a cutting edge, and has two types of holes and no holes, the shovel blade plate is provided with the holes, so that the shovel teeth can be conveniently installed, and the shovel teeth and the shovel blade plate are connected in a welding mode without the holes.
Different loader types need to be matched with shovel blade plates with different sizes, the length is generally from 2800mm to 3500mm, and the width is generally from 200mm to 350 mm; the thickness is generally from 18mm to 30 mm.
The cutting edge of the shovel blade plate serving as the loader tooth is required to cut materials, the requirement on the wear resistance of the shovel blade plate is high, meanwhile, the shovel blade plate is required to have good impact toughness, and the rear part of the shovel blade plate is required to be connected with a bucket body of a loader, so that the welding part at the rear part of the shovel blade plate is required to have good weldability.
The weldability of the shovel blade plate requires that the carbon content and the manganese and chromium content in the material cannot be high, so the invention effectively reduces the content of the carbon element; the shovel blade part of the shovel blade plate is required to have higher hardness so that the wear resistance of the shovel blade part is ensured, the alloy content of the front working area of the shovel blade plate is well increased through a compounding process, and the wear resistance of the shovel blade plate is well improved; the method perfectly improves the requirements, further solves the problems compared with the original product, and ensures that the obtained shovel blade plate has better wear resistance and impact toughness resistance and has very good weldability.
Tests and application tests prove that: the wear resistance of the cutting edge plate is more than three times of that of the prior ZG25CrMnMo cutting edge plate, and the impact toughness and the welding performance of the cutting edge plate exceed the mechanical performance of ZG25 CrMnMo.
The invention also provides a production process for casting the shovel blade plate by the composite process for the loader, which is characterized in that Cr alloy powder and Ni alloy powder which are prepared in proportion are coated in advance to be 6mm thick and are fixed to a working area of a mould box corresponding to the shovel blade plate, and molten steel with chemical components required by a melted main body area is poured into a mould cavity by a casting belt riser after the mould is closed, so that a required casting is obtained; after the casting is cooled, cutting a dead head, polishing and flattening the casting, and then carrying out normalizing heat treatment to obtain the casting.
In the casting molding process, 3 direct feeding risers are adopted, all the risers are communicated with each other, namely a third riser and a first riser are used as casting riser instead of casting riser, a second riser is used as a single feeding riser and is communicated with a casting mold, and two steel ladles are used for simultaneously casting molten steel from the third riser and the first riser when the molten steel is cast.
In order to prevent the deformation of the shovel blade plate in the casting and molding process, a longitudinal quenching reinforcing rib is arranged at the lower part of the shovel blade plate of the model.
In the casting molding process, a mode of pouring molten steel by placing a molding box in an upward inclined manner at an angle of 15-45 degrees is adopted, so that the feeding pressure from a riser to the interior of a mold is increased, and the fluidity of the pouring liquid is improved.
Wherein the normalizing heat treatment process comprises the following steps: loading the shovel blade plate obtained by casting in the composite process into a normalizing furnace, heating to 600 ℃, preserving heat for 2 hours, then continuously heating to 860-900 ℃, preserving heat for 4 hours continuously, and rapidly discharging and air-cooling normalizing.
The invention has the following advantages:
in the casting process, the element content of the main body area of the shovel blade plate is C: 0.16% -0.26%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 0.90% -1.20%, Mo: 0.20% -0.30%, Fe: 96.87% -97.74%; the element content of the working area of the shovel blade plate is C: 2.5% -3.5%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 18% -23%, Ni: 0.8% -1.2%, Mo: 0.20% -0.30%, Fe: 70.63 to 77.5 percent, and meets the requirements of the shovel blade plate on better wear resistance, higher impact toughness and weldability required by connection with the bucket body.
Drawings
FIG. 1 is a structural schematic diagram of placement of a molding box during pouring in a production process for casting a blade plate by a composite process for a loader according to the invention;
FIG. 2 is a schematic diagram of the distribution structure of different alloy components of a composite process casting blade plate for the loader according to the present invention;
FIG. 3 is a schematic structural diagram of a composite process casting blade plate for a loader according to the present invention, in which risers are not cut off and a quenching reinforcing rib is provided;
FIG. 4 is a schematic view of a non-porous blade plate structure of a composite casting blade plate for a loader according to the present invention;
fig. 5 is a schematic structural view of a perforated blade plate of a composite-process casting blade plate for a loader according to the present invention.
The reference numerals are explained below:
1. a first riser; 2. a second riser; 3. a third riser; 4. a working area; 5. quenching the reinforcing rib; 6. molding a box; 7. a body region.
Detailed Description
The present invention will be further described with reference to specific examples, but the present invention is not limited to these examples.
Examples
The loader casts the shovel blade plate by the composite technology, and the element content of the main body area 7 of the shovel blade plate is C: 0.16% -0.26%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 0.90% -1.20%, Mo: 0.20% -0.30%, Fe: 96.87% -97.74%; the element content of the working area 4 of the shovel blade plate is C: 2.5% -3.5%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 18% -23%, Ni: 0.8% -1.2%, Mo: 0.20% -0.30%, Fe: 70.63-77.5 percent.
The invention also provides a production process for casting the shovel blade plate by the composite process for the loader, wherein the molding box 6 which is made of quartz sand and water glass as a binder is made of the same material as the molding box in the existing casting process; 3 direct feeding risers are adopted, each riser is communicated with each other, namely a third riser 3 and a first riser 1 are used as two casting riser instead of the risers, a second riser 2 is a single feeding riser and is communicated with the casting mold, and the casting liquid is poured into the casting mold from the third riser 3 and the first riser 1 by using 2 steel ladles simultaneously, wherein the molten steel has qualified components.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The production process for casting the shovel blade plate by the composite process for the loader is characterized by comprising the following steps of: the element content of the main body area (7) of the shovel blade plate is C: 0.16% -0.26%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 0.90% -1.20%, Mo: 0.20% -0.30%, Fe: 96.87% -97.74%; the element content of the working area (4) of the shovel blade plate is C: 2.5% -3.5%, Mn: 0.80% -1.0%, Si: 0.20% -0.37%, Cr: 18% -23%, Ni: 0.8% -1.2%, Mo: 0.20% -0.30%, Fe: 70.63 to 77.5 percent, coating Cr and Ni alloy powder prepared in proportion in advance with the thickness of 6mm, fixing the powder to a working area (4) of a molding box (6) corresponding to a shovel blade plate, and pouring molten steel with chemical components required by a melted main body area (7) into a cavity by a casting head after the molding box is closed to obtain a required casting; after the casting is cooled, cutting a dead head, polishing and flattening the casting, and then carrying out normalizing heat treatment to obtain the casting.
2. The production process for casting the blade plate by the composite process for the loader according to claim 1, wherein the production process comprises the following steps: in the casting forming process, 3 direct feeding risers are adopted, all the risers are communicated with each other, namely a third riser (3) and a first riser (1) are used as casting riser, a second riser (2) is used as a single feeding riser and is communicated with a casting mold, and two ladles are used for simultaneously casting from the third riser (3) and the first riser (1) when molten steel is cast.
3. The production process for casting the blade plate by the composite process for the loader according to claim 1, wherein the production process comprises the following steps: the lower part of the shovel blade plate of the model is provided with a longitudinal quenching reinforcing rib (5).
4. The production process for casting the blade plate by the composite process for the loader according to claim 1, wherein the production process comprises the following steps: in the casting and forming process, a mode of placing a molding box (6) in an upward inclined manner at an angle of 15-45 degrees for pouring molten steel is adopted, so that the feeding pressure from a riser to the inside of a model is increased, and the fluidity of the pouring liquid is improved.
5. The production process for casting the blade plate by the composite process for the loader according to claim 1, wherein the production process comprises the following steps: the normalizing heat treatment process comprises the following steps: loading the shovel blade plate obtained by the composite process casting into a normalizing furnace, heating to 600 ℃, preserving heat for 2 hours, continuously heating to 860-900 ℃, preserving heat for 4 hours, quickly discharging, and air-cooling and normalizing.
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| CN202110511676.7A CN113235003B (en) | 2021-05-11 | 2021-05-11 | Composite process casting shovel blade plate for loader and production process thereof |
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| CN202110511676.7A CN113235003B (en) | 2021-05-11 | 2021-05-11 | Composite process casting shovel blade plate for loader and production process thereof |
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| PE20242021A1 (en) * | 2021-12-23 | 2024-10-03 | Metalogenia Research And Tech S L | LIP FOR EARTHMOVING MACHINE SHOVEL AND LIP MANUFACTURING METHOD |
| CN117900943B (en) * | 2024-03-18 | 2024-05-28 | 山东莱工机械制造有限公司 | Welding machine tool for machining loader bucket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA1162425A (en) * | 1981-02-20 | 1984-02-21 | Falconbridge Nickel Mines Limited | Abrasion resistant, machinable white cast iron |
| CN100355992C (en) * | 2004-03-19 | 2007-12-19 | 洛阳市钢峰铸造有限公司 | Integral casting alloy steel shovel edge plate for loader and its manufacturing process and device |
| US9738334B2 (en) * | 2013-05-07 | 2017-08-22 | Arcelormittal | Track shoe having increased service life useful in a track drive system |
| CN103785817B (en) * | 2014-01-16 | 2016-01-20 | 佳木斯大学 | A kind of production method of biliquid metal composite casting teeth |
| CN105908071B (en) * | 2016-05-20 | 2017-12-12 | 衡阳鸿宇机械制造有限公司 | A kind of alloy material of bimetal liquid composite casting sand mold shaping manufacture tup and the manufacture method of bimetal liquid composite hammer head |
| CN106001439B (en) * | 2016-06-06 | 2019-01-15 | 湖北万鑫精密铸锻股份有限公司 | A kind of monoblock cast bucket |
| KR102627470B1 (en) * | 2016-11-17 | 2024-01-19 | 에이치디현대인프라코어 주식회사 | Construction equipment bucket parts and methods of manufacturing the same |
| AU2020244846A1 (en) * | 2019-03-27 | 2021-10-21 | Esco Group Llc | Lip for excavating bucket |
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