CN110000336A - Using the hot-loading and hot-conveying casting method of graphite jig - Google Patents

Using the hot-loading and hot-conveying casting method of graphite jig Download PDF

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Publication number
CN110000336A
CN110000336A CN201910309105.8A CN201910309105A CN110000336A CN 110000336 A CN110000336 A CN 110000336A CN 201910309105 A CN201910309105 A CN 201910309105A CN 110000336 A CN110000336 A CN 110000336A
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CN
China
Prior art keywords
sandbox
hot
casting
graphite jig
mold
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910309105.8A
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Chinese (zh)
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CN110000336B (en
Inventor
杨富强
张文用
白赛吉拉胡
邢利芳
李恒恒
何名
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BAOTOU SHENRUN ADVANCED MATERIALS Co Ltd
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BAOTOU SHENRUN ADVANCED MATERIALS Co Ltd
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Priority to CN201910309105.8A priority Critical patent/CN110000336B/en
Publication of CN110000336A publication Critical patent/CN110000336A/en
Application granted granted Critical
Publication of CN110000336B publication Critical patent/CN110000336B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/06Permanent moulds for shaped castings
    • B22C9/061Materials which make up the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/082Sprues, pouring cups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/20Stack moulds, i.e. arrangement of multiple moulds or flasks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/28Normalising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/002Heat treatment of ferrous alloys containing Cr
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium

Abstract

The invention discloses a kind of hot-loading and hot-conveying casting methods using graphite jig, comprising: casting is taken out in the die sinking when surface temperature of casting in mold drops to 1000-1100 DEG C;Casting in heat treatment temperature section is heat-treated, the temperature of casting is 900-1000 DEG C at this time.The present invention can be improved casting processing efficiency, reduce the thermal losses in process, at the same can also rapid wear material performance.

Description

Using the hot-loading and hot-conveying casting method of graphite jig
Technical field
The present invention relates to a kind of foundry engieerings, specifically, are related to a kind of hot-loading and hot-conveying casting method using graphite jig.
Background technique
Excavator bucket teeth is the important component on excavator, the Dipper Teeth being made of toothholder and tooth tip, excavator Bucket is connect with bucket tooth by pin shaft.Pick is on the rotary parts such as coalcutter, shield machine.The structure and work of bucket tooth and pick With close, all it is vulnerable part, needs to replace in time after abrasion.
Bucket tooth is usually made of toothholder and tooth tip, and for Dipper Teeth, toothholder is connected on bucket, toothholder and tooth tip It is flexibly connected by pin shaft, directly replaces tooth tip after tooth tip abrasion.For the bucket tooth of toothholder and tooth tip integral structure, toothholder is logical Pin shaft is crossed to be flexibly connected with excavator bucket.
Bucket tooth material is low-alloy wear-resistant steel, is proper for bucket tooth.The processing process of bucket tooth has: having Sha Zhu It makes, to forge and press casting, hot investment casting several.But since not by necessary heat treatment, bucket tooth nonuniform organization, insert is not sent out Due effect is waved, the overall wear resistance of bucket tooth is poor.It, also need to be due to the limitation of mold even if being heat-treated to bucket tooth, it is necessary to Bucket tooth after cooling is reheated, can not realize that assembly line casts bucket tooth, reheat bucket tooth and not only waste The energy, and current production technology production efficiency is low.
Summary of the invention
Technical problem solved by the invention is to provide a kind of hot-loading and hot-conveying casting method using graphite jig, Neng Gouti Height casting processing efficiency, reduce process in thermal losses, while can also rapid wear material performance.
Technical solution is as follows:
A kind of hot-loading and hot-conveying casting method using graphite jig, comprising:
Molten steel is injected in graphite jig, the die sinking when surface temperature of casting in graphite jig drops to 1000-1100 DEG C, Take out casting;
Casting in heat treatment temperature section is heat-treated, the temperature of casting is 900-1000 DEG C at this time;
Finished product is formed after carrying out finishing to the casting after heat treatment.
Further, the temperature of molten steel is greater than 1300 DEG C, and molten steel uses the steel alloy of Cr, Mn element.
Further, the casting after heat treatment is also needed to carry out sandblasting, japanning, packaging.
Further, graphite jig takes away the surface heat of casting, so that the surface temperature of casting drops to 1000-1100 DEG C, By casting solidification and reach heat treatment temperature section.
Further, heat treatment is heat-treated using normalizing, and the heat treatment temperature of casting is 950 DEG C.
Further, the step of assembling graphite jig includes:
Bolt passes through the pedestal connection through-hole of attachment base, attachment base is fixed on first by the first connection through-hole of the first backboard The outside of backboard;First mold fission is placed in the first support plate on the inside of the first backboard, the first side plate, the second side plate point It is not placed on the first mold fission two sides, the second edge of the second side plate, the first edge of the first side plate are pressed in the first mold point At the both sides of the edge of body, bolt passes through the first connection through slot of the second engaging lug through-hole of the second side plate, the first backboard, and bolt is worn The first engaging lug through-hole, the first connection through slot of the first side plate are crossed, the first mold fission is fixedly clamped by screwing bolts;
Bolt passes through the pedestal connection through-hole of attachment base, attachment base is fixed on second by the second connection through-hole of the second backboard The outside of backboard;Second mold fission is placed in the second support plate on the inside of the second backboard, the first side plate, the second side plate point It is not placed on the second mold fission two sides, the second edge, the first edge are pressed in the edge of the second mold fission, and bolt passes through the Two engaging lug through-holes, the second connection through slot, bolt pass through the first engaging lug through-hole, the second connection through slot, and screwing bolts are by second Mold fission is fixedly clamped;
First backboard, the second backboard are placed on, sliding rail is located at first sliding groove, in second sliding slot;By two Two sandboxs are individually positioned in the type chamber lower part of seperated, second type chamber fission the composition of the first type chamber;By the first mold fission, second Mold fission inner wall is opposite to be merged, and rotates the handle of two sides, two U-shaped yokes are snapped onto respectively on two the second link blocks; Two sandbox Split assembleds at the first sandbox and are mounted on the sandbox that the first sandbox divides chamber, the second sandbox that chamber is divided to surround and divide chamber It is interior.
Further, the step of molten steel injection graphite jig includes:
Molten steel enters from the main running channel of the first sandbox, and the type chamber of graphite jig is entered from branch's running channel;Molten steel is opened from bottom Beginning fills the second sandbox, the gap that type chamber surrounds, and molten steel forms bucket tooth connecting pin in the gap that pin, semicircle groove body surround Through-hole;
Liquid steel level continues to be raised above type is intracavitary, until being full of type chamber, the cooling molten steel of graphite jig, molten steel is in type chamber Interior formation casting;Air in type chamber and molten steel is discharged by gas vent, sandbox venthole, and the second sandbox produces after being heated by molten steel Raw gas is discharged from the second sandbox bottom.
Further, the pin of the second sandbox is located in the semi-circular groove body after the first pin hole slot, the combination of the second pin hole slot;The First row air drain, the second row air drain of one sandbox form sandbox venthole, the bottom end opening face gas vent of sandbox venthole Top end opening.
Further, the step of opening graphite jig includes: to open molding lock, pulls attachment base, the first mold is seperated, the Two molds fission separates;The first sandbox is smashed, casting is taken out from die ontology;Go to sticks and staves the second sandbox, the first sandbox, second The disintegrating slag of sandbox leaks down from the sand losing opening of bottom plate into the collecting bin of lower part.
Further, the first sandbox of filling is installed to die ontology again, refills molten steel after the second sandbox and casts.
The technology of the present invention effect includes:
The present invention has reformed foundry engieering using hot-loading and hot-conveying technological means, can be improved the casting of the casting such as bucket tooth, pick Make processing efficiency, reduce the thermal losses in process, at the same can also rapid wear material performance.It is specific as follows:
1, graphite material has good thermal conductivity, is better than other Modeling Materials, has high Quench to bucket tooth molding Effect.Keep bucket tooth (casting) interior tissue fine and smooth, intensity is high, good toughness.
2, graphite heat resistance is high, has good heat resistance, and expansion rate is low, and rigidity is high, indeformable, guarantees bucket tooth (casting) Size is accurate.
3, graphite mould mold can be reused more than or equal to 5000 times, often guarantee that single-piece bucket tooth is at low cost, with sand Type is compared with model casting does not generate casting rubbish, is conducive to environmental protection.
5, there are also the effects of self-lubricating, bucket tooth (casting) to be convenient in demoulding for graphite.
6, graphite material hardness is low, easy to process, so die manufacturing cost is low.
7, graphite is the allotrope of carbon, and carbon has very strong reduction, prevents molten steel oxidation, so bucket tooth (casting Part) surface is not easy to aoxidize.
Detailed description of the invention
Fig. 1 is in the present invention using the flow chart of the hot-loading and hot-conveying casting method of graphite jig;
Fig. 2 is the vertical section structure schematic diagram of graphite jig in the present invention;
Fig. 3 is the three-dimensional structure diagram of the first mold fission in the present invention;
Fig. 4 is the stereochemical structure of the second mold fission in the present invention;
Fig. 5 is the structural schematic diagram of the first sandbox top end surface in the present invention;
Fig. 6 is sandbox fission schematic diagram of internal structure in the present invention;
The structural schematic diagram of second sandbox in Fig. 7 present invention;
Fig. 8 is the main view of insole board of the present invention;
Fig. 9 is the bottom view of insole board of the present invention;
Figure 10 is the right view of insole board of the present invention;
Figure 11 is the main view of the first backboard in the present invention;
Figure 12 is the top view of the first backboard in the present invention;
Figure 13 is the left view of the first backboard in the present invention;
Figure 14 is the main view of the second backboard in the present invention;
Figure 15 is the top view of the second backboard in the present invention;
Figure 16 is the right view of the second backboard in the present invention;
Figure 17 is the main view of the first side plate in the present invention;
Figure 18 is the right view of the first side plate in the present invention;
Figure 19 is the bottom view of the first side plate in the present invention;
Figure 20 is the main view of the second side plate in the present invention;
Figure 21 is the right view of the second side plate in the present invention;
Figure 22 is the bottom view of the second side plate in the present invention;
Figure 23 is the positive assembling schematic diagram that lock is molded in the present invention;
Figure 24 is the side assembling schematic diagram that lock is molded in the present invention;
Figure 25 is the front view of attachment base in the present invention;
Figure 26 is the drawing in side sectional elevation of attachment base in the present invention.
Specific embodiment
Be described below and specific embodiments of the present invention be fully shown, with enable those skilled in the art to practice and It reproduces.
As shown in Figure 1, being in the present invention using the flow chart of the hot-loading and hot-conveying casting method of graphite jig.
Using the hot-loading and hot-conveying casting method of graphite jig, specifically includes the following steps:
Step 1: the temperature of smelting molten steel, molten steel is greater than 1300 DEG C;
Molten steel uses the steel alloy of Cr, Mn element.
Step 2: molten steel is injected graphite jig by assembling graphite jig;
As shown in Fig. 2, being the vertical section structure schematic diagram of graphite jig in the present invention.
The structure of graphite jig includes: die ontology 1, the first sandbox 2, the second sandbox 3, die sleeve 4.Die ontology 1 is arranged There are two type chambers 11, and 11 top of type chamber is provided with gas vent 12;First sandbox 2 is located between two type chambers 11, and the first sandbox 2 is set It is equipped with the branch's running channel 22 being connected and main running channel 21, the opening of main running channel 21 is located at the top of the first sandbox 2;Branch's running channel 22 11 middle part of one end connecting-type chamber, the other end are connected with main running channel 21;Second sandbox 3 is located at the lower part of type chamber 11.After assembling Die ontology 1, the first sandbox 2 are located in die sleeve 4.Die sleeve 4 is metal material, is used for fixing mould ontology 1, and gives mold Ontology 1 radiates.
Two type chambers 11 or multiple type chambers 11 can certainly be set in die ontology 1.The shape of type chamber 11 can be with It is determined according to the shape of product.In this preferred embodiment, graphite jig is used to cast bucket tooth, so, the shape of type chamber 11 is The shape of bucket tooth.
As shown in figure 3, being the three-dimensional structure diagram of the first mold fission 13 in the present invention;
Die ontology 1 includes: the first mold fission 13, the second mold fission 14, the first mold fission 13, the second mold point 14 inner wall of body is opposite, and die ontology 1 is formed after combination.Die ontology 1 can also use more Split assembled modes, to adapt to not Same shape of product.
First mold fission 13 is provided with the first sandbox on inner wall and is divided to 133, two chamber 132, locating slot the first type chambers point Body 131, the first sandbox are divided to chamber 132 to be located between two the first type chamber fissions 131, and locating slot 133 is located at the first type chamber fission 131 Outside;First sandbox divides the lower part of chamber 132 to be the first separation platform 134, and first, which separates platform 134, is located at two the first type chambers fissions Between 131;The inner wall of first type chamber fission 131, the first two sidewalls for separating platform 134 are respectively arranged with the first pin hole slot 135, Two the first pin hole slots 135 are located on the same line.The top of first type chamber fission 131 is provided with first row air drain 136.
As shown in figure 4, being the three-dimensional structure diagram of the second mold fission 14 in the present invention.
Second mold fission 14 is provided with the second sandbox on inner wall and is divided to chamber 142, two second type chamber fissions 141, and second Sandbox is divided to chamber 142 to be located between two second type chamber fissions 141, and the second mold fission 14 in 141 outside of second type chamber fission exists Positioning protrusion 143 is provided on inner wall;Second sandbox divides the lower part of chamber 142 to be the second separation platform 144, and second separates platform 144 Between two second type chamber fissions 141, the inner wall of second type chamber fission 141, the second separation 144 two sidewalls of platform are set respectively It is equipped with the second pin hole slot 145.The top of second type chamber fission 141 is provided with second row air drain 146.
For seperated 14 inner walls of first mold fission 13, the second mold relatively and after combination, the first sandbox divides chamber 132, second Sandbox divides chamber 142 to form sandbox and divides chamber, and it is intracavitary that the first sandbox 2 is mounted on sandbox point;Positioning protrusion 143 is located in locating slot 133, The seperated 141 composing type chambers 11 of first type chamber fission 131, second type chamber, the second sandbox 3 are located at the lower part of type chamber 11;First exhaust Slot 136, second row air drain 146 form gas vent 12;It is semi-circular groove after first pin hole slot 135, the combination of the second pin hole slot 145 Body.
As shown in figure 5, being the structural schematic diagram of 2 top end surface of the first sandbox in the present invention;As shown in fig. 6, being the present invention Seperated 21 schematic diagram of internal structures of middle sandbox.
First sandbox 2 includes two sandbox fissions 21 combined, and the first sandbox 2 is being internally provided with branch's running channel 22 and main running channel 21, branch's running channel 22 is located at main 21 two sides of running channel, and the opening of main running channel 21 is located at the top of the first sandbox 2, point 22 one end connecting-type chamber of branch running channel, 11 middle part, the other end connect main running channel 21;It is provided on 2 top of the first sandbox of opening two sides Sandbox venthole 23, the opening of sandbox venthole 23 are located at the top of the first sandbox 2.Molten steel enters branch's running channel from main running channel 21 22, type chamber 11 is then entered in the middle part of type chamber 11, since volume is larger in the middle part of bucket tooth, after the molten steel solidification of bottom, middle part molten steel is most After solidify, be conducive to the complete molding of bucket tooth, and be conducive to the discharge of air in air in molten steel and the first sandbox 2.
The bottom port of sandbox venthole 23 is connected with the top of gas vent 12.When casting, the air in molten steel passes through Gas vent 12, sandbox venthole 23 are discharged, and can be avoided and form trachoma and bubble in bucket tooth.
In order to fix the position of sandbox fission 21, the inner wall of sandbox fission 21 is provided with locating slot 25 and positioning column 26, the positioning column 26 of a sandbox fission 21 is located in the locating slot 25 of another sandbox fission 21.
As shown in fig. 7, being the structural schematic diagram of the second sandbox 3 in the present invention.
Second sandbox 3 is internally provided with sandbox cavity, and the bottom opening of sandbox cavity is located at the bottom of the second sandbox 3, the Two sandboxs 3 are provided with pin 32 on the outer wall of two sides, and pin 32 is located in semi-circular groove body, and the outer diameter of pin 32 is less than semicircle The internal diameter of groove body forms bucket tooth connecting pin through-hole after the casting of 32 the space occupied of pin.
In order to reinforce the intensity of the second sandbox 3, reinforcing rib 33 is provided on the outer wall of the second adjacent sandbox 3 of pin 32; In order to reinforce stability when casting, the bottom of the second sandbox 3 is provided with pedestal 34, and bottom opening is located at 34 bottom of pedestal.
As shown in figure 8, being the main view of insole board 411 of the present invention;As shown in figure 9, being looking up for insole board 411 of the present invention Figure;It as shown in Figure 10, is the right view of insole board 411 of the present invention.
Die sleeve 4 is that combination is die sleeve, for fixing the first mold fission 13, the second mold fission 14, and gives the first mold Seperated 13, second mold fission 14 radiates, and die sleeve 4 includes: two die sleeve fissions 41, molding lock 42, attachment base 43.
Die sleeve fission 41 includes: bottom plate 411, the first backboard 412, the second backboard 413, the first side plate 414, the second side plate 415。
There are two bore 4111 in middle part setting for bottom plate 411, and the outside of bore 4111 is provided with sand losing opening 4112, bottom plate 411 are arranged at top there are two sliding rail 4113, and bore 4111, sand losing opening 4112 are located between two sliding rails 4113.
Bore 4111 plays the role of positioning, and the second sandbox 3 that sand losing opening 4112 is used to be crushed is missed, and is conducive to next bucket tooth casting The second sandbox 3 is packed into when making.
It as shown in figure 11, is the main view of the first backboard 412 in the present invention;It as shown in figure 12, is the first back in the present invention The top view of plate 412;It as shown in figure 13, is the left view of the first backboard 412 in the present invention.
First backboard 412 is provided with the first connection through slot 4121 in two sides, and every side sets that there are two the first connection through slots 4121;The One backboard 412 is located at the same circle in the center of circle that lower part is provided with the first connection through-hole 4122,4 first connection through-holes 4122 On;Attachment base 43 is bolted on the first connection through-hole 4122.First backboard 412 is connected with the first support plate in bottom 4123, the first support plate 4123 is provided with two sandbox openings 4124 in inside, between the first support plate 4123 and the first backboard 412 It is connected with the first stiffener plate 4125, the first backboard 412 is provided with the second stiffener plate 4126, two the second reinforcing ribs in lower part Plate 4126 is located at the outside of the first support plate 4123, and the first backboard 412 opens that there are two first sliding groove 4127, first sliding grooves in bottom 4127 run through backboard 412, the second stiffener plate 4126.
After graphite jig combination, sandbox opening 4124 is located at the lower part of the first type chamber fission 131, second type chamber fission 141.
It as shown in figure 14, is the main view of the second backboard 413 in the present invention;It as shown in figure 15, is the second back in the present invention The top view of plate 413;It as shown in figure 16, is the right view of the second backboard 413 in the present invention.
Second backboard 413 is provided with the second connection through slot 4131 in two sides, and every side sets that there are two the second connection through slots 4131;The Two backboards 413 are located at the same circle in the center of circle that lower part is provided with the second connection through-hole 4132,4 second connection through-holes 4132 On;Attachment base 43 is bolted on the second connection through-hole 4132.Second backboard 413 is connected with the second support plate in bottom 4133, the second support plate 4133 is provided with two sandbox openings 4124 in inside, between the second support plate 4133 and the second backboard 413 It is connected with third stiffener plate 4135, the second backboard 413 is provided with the 4th stiffener plate 4136, two the 4th reinforcing ribs in lower part Plate 4136 is located at the outside of the second support plate 4133, and the second backboard 413 opens that there are two second sliding slot 4137, second sliding slots in bottom 4137 run through backboard 413, the 4th stiffener plate 4136.
It as shown in figure 17, is the main view of the first side plate 414 in the present invention;It as shown in figure 18, is the first side in the present invention The right view of plate 414;It as shown in figure 19, is the bottom view of the first side plate 414 in the present invention.
First side plate 414 is arranged there are two the first engaging lug 4141 and first link block 4144 on outer side wall, Two the first engaging lugs 4141, the first link block 4144 are located at the same side, and engaging lug 4141 is provided with multiple first engaging lug through-holes 4142, the first link block 4144 is provided with connecting pin bores 4145;First side plate 414 is provided with the first edge in the edge of inner sidewall 4143, the first edge 4143, the first engaging lug 4141 are located at 414 two sides of the first side plate.
It as shown in figure 20, is the main view of the second side plate 415 in the present invention;It as shown in figure 21, is second side in the present invention The right view of plate 415;It as shown in figure 22, is the bottom view of the second side plate 415 in the present invention.
Second side plate 415 is arranged there are two the second engaging lug 4151 and second link block 4154 on outer side wall, Two the second engaging lugs 4151, the second link block 4154 are located at the same side, and the second engaging lug 4151 is provided with multiple second engaging lugs The corner of through-hole 4152,4144 outside of the second link block is arc;Second side plate 415 is provided with second in the edge of inner sidewall Edge 4153, the second edge 4153, the second engaging lug 4151 are located at 415 two sides of the first side plate.
First side plate 414 or the second side plate 415 can connect two the first backboards 412 or the second side plate 415 simultaneously, First side plate 414 and one can also be connected on the first backboard 412 with the first side plate 414,415 arranged crosswise of the second side plate A second side plate 415 connects first side plate 414 and second side plate 415 in the second side plate 415.
It as shown in figure 23, is the positive assembling schematic diagram of molding lock 42 in the present invention;It as shown in figure 24, is closed in the present invention The side assembling schematic diagram of mold lock 42.
Molding lock 42 includes: U-shaped yoke 421, connecting pin 422, handle 423;U-shaped yoke 421 is opened respectively two ends There is yoke through-hole, connecting pin 422 passes through yoke through-hole, connecting pin bores 4145 and U-shaped yoke 421 is connected to the first link block 4144 On;The end of handle 423 is connected on the outer wall of U-shaped yoke 42.The inner wall of U-shaped yoke 421 is arcwall face, arcwall face and the The arc angle of two link blocks 4144 squeezes mutually, is conducive to tense the first side plate 414, the second side plate 415.
It as shown in figure 25, is the front view of attachment base 43 in the present invention;It as shown in figure 26, is attachment base 43 in the present invention Drawing in side sectional elevation.
Attachment base 43 includes: pedestal 431, connector sleeve 432;The end of connector sleeve 432 is connected on pedestal 431;Pedestal 431 Pedestal connects through-hole 433 there are four opening, and mechanical arm connection through-hole 434 is provided on 432 side wall of connector sleeve.Bolt is connected across pedestal Through-hole 433, second connects through-hole 4132, and attachment base 43 is connected on the second backboard 413;Bolt passes through pedestal and connects through-hole 433, the first connection through-hole 4122, attachment base 43 is connected on the first backboard 412.Mechanical arm connection through-hole 434 will be for that will connect Joint chair 43 connects on the robotic arm.
Assemble graphite jig the step of include:
Step 211: bolt passes through the pedestal connection connection through-hole 4122 of through-hole 433, first and attachment base 43 is fixed on first The outside of backboard 412;First mold fission 13 is placed in the first support plate 4123 of 412 inside of the first backboard, the first side Plate 414, the second side plate 415 are individually positioned in seperated 13 two sides of the first mold, and the second edge 4153, the first edge 4143 are pressed in the The edge of one mold fission 13, bolt pass through the second engaging lug through-hole 4152, first and connect through slot 4121, and bolt passes through first Engaging lug through-hole 4142, first connects through slot 4121, and the first mold fission 13 is fixedly clamped by screwing bolts;
Step 212: bolt passes through the pedestal connection connection through-hole 4132 of through-hole 433, second and attachment base 43 is fixed on second The outside of backboard 413;Second mold fission 14 is placed in the second support plate 4133 of 413 inside of the second backboard, the first side Plate 414, the second side plate 415 are individually positioned in seperated 14 two sides of the second mold, and the second edge 4153, the first edge 4143 are pressed in the At the both sides of the edge of two molds fission 14, bolt passes through the second engaging lug through-hole 4152, second and connects through slot 4131, and bolt passes through First engaging lug through-hole 4142, second connects through slot 4131, and the second mold fission 14 is fixedly clamped by screwing bolts;
Step 213: the first backboard 412, the second backboard 413 being placed on bottom plate 411, sliding rail 4113 is located at first sliding groove 4127, in second sliding slot 4137;Two the second sandboxs 3 are individually positioned in the first type chamber fission 131, second type chamber fission 141 Lower part;By the first mold fission 13, the opposite merging of seperated 14 inner walls of the second mold, the handle 423 of two sides, two U are rotated Shape yoke 421 is snapped onto respectively on two the second link blocks 4154;Two sandbox fissions 21 are combined into the first sandbox 2 and are installed It is intracavitary in the sandbox that the first sandbox divides chamber 132, the second sandbox that chamber 142 is divided to surround point.
Second sandbox 3 is located at the lower part of the first type chamber fission 131, the type chamber 11 that second type chamber fission 141 forms, and second is husky The pin 32 of case 3 is located in the semi-circular groove body after the first pin hole slot 135, the combination of the second pin hole slot 145.The of first sandbox 2 One air discharge duct 136, second row air drain 146 form sandbox venthole 23, the bottom end opening face gas vent 12 of sandbox venthole 23 Top end opening.
Molten steel inject graphite jig the step of include:
Step 221: molten steel enters from the main running channel 21 of the first sandbox 2, and the type chamber of graphite jig is entered from branch's running channel 22 11;
Step 222: the gap that molten steel fills the second sandbox 3 since bottom, type chamber 11 surrounds, molten steel is in pin 32, half Bucket tooth connecting pin through-hole is formed in the gap that round groove body surrounds;
Step 223: liquid steel level continuation is raised above in type chamber 11, until being full of type chamber 11, graphite jig cooling steel Water, molten steel form casting 5 in type chamber 11.
The air in air, molten steel in type chamber 11 is discharged by gas vent 12, sandbox venthole 23,3 quilt of the second sandbox The gas generated after molten steel heating is discharged from the second sandbox bottom.
Step 3: casting 5 is taken out in the die sinking when surface temperature of casting 5 drops to 1000-1100 DEG C;
Graphite jig can quickly take away the surface heat of casting 5, so that the surface temperature of casting 5 drops to 1000-1100 DEG C, 5 surface of casting is quickly solidified and is reached heat treatment temperature section (sometimes also in liquid inside casting 5), is conducive to add Fast casting and thermal treatment rate.
Being opened step includes:
Step 31: opening molding lock 42, pull attachment base 43, the first mold fission 13, the second mold fission 14 are separated;
Step 32: smashing the first sandbox 2, casting 5 is taken out from die ontology 1.Go to sticks and staves the second sandbox 3, the first sandbox 2, the disintegrating slag of the second sandbox 3 leaks down from the sand losing opening 4112 of bottom plate 411 into the collecting bin of lower part.
Again molten steel can be refilled after loading the first sandbox 2, the second sandbox 3 by, which installing to die ontology 1, is poured Casting.First sandbox 2, the second sandbox 3 are replaceable product, and die ontology 1 can be reused, and greatly reduce the use of sandbox Amount.
Step 4: the casting 5 in heat treatment temperature section being heat-treated, the temperature of casting 5 is 900-1000 at this time ℃;
Heat treatment is heat-treated using normalizing, since (preferable temperature is at 900-1000 DEG C for the heat treatment temperature section of casting 5 950 DEG C), so eliminating the heating stepses again in existing casting process, the heat treatment mode of this hot-loading and hot-conveying can be big It is big to improve 5 processing efficiency of casting, and save fuel.
It is fast that the heat treatment mode of hot-loading and hot-conveying takes full advantage of graphite jig (die ontology 1 of graphite material) temperature conduction The feature of speed.
Step 5: forming finished product after carrying out sandblasting, finishing, japanning, packaging to the casting 5 after heat treatment.
Sandblasting is used to remove the oxide skin on 5 surface of casting;When graphite jig is there are two when type chamber, riser hot-cutting machine, which is cut, to be emitted Mouthful, two casting 5 are separated by finishing, the residue that removal casting 5 is formed in running channel attachment.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any above-mentioned Details, and should widely explaining within the spirit and scope of the appended claims, thus fall into claim or its etc. Whole change and modification in effect range all should be appended claims and be covered.

Claims (10)

1. a kind of hot-loading and hot-conveying casting method using graphite jig, comprising:
Molten steel is injected in graphite jig, the die sinking when surface temperature of casting in graphite jig drops to 1000-1100 DEG C, is taken out Casting;
Casting in heat treatment temperature section is heat-treated, the temperature of casting is 900-1000 DEG C at this time;
Finished product is formed after carrying out finishing to the casting after heat treatment.
2. using the hot-loading and hot-conveying casting method of graphite jig as described in claim 1, which is characterized in that the temperature of molten steel is greater than 1300 DEG C, molten steel uses the steel alloy of Cr, Mn element.
3. using the hot-loading and hot-conveying casting method of graphite jig as described in claim 1, which is characterized in that the casting after heat treatment Part also needs to carry out sandblasting, japanning, packaging.
4. using the hot-loading and hot-conveying casting method of graphite jig as described in claim 1, which is characterized in that graphite jig takes away casting The surface heat of part by casting solidification and reaches heat treatment temperature area so that the surface temperature of casting drops to 1000-1100 DEG C Between.
5. using the hot-loading and hot-conveying casting method of graphite jig as described in claim 1, which is characterized in that heat treatment uses normalizing Heat treatment, the heat treatment temperature of casting are 950 DEG C.
6. using the hot-loading and hot-conveying casting method of graphite jig as described in claim 1, which is characterized in that assemble graphite jig Step includes:
Bolt passes through the pedestal connection through-hole of attachment base, attachment base is fixed on the first backboard by the first connection through-hole of the first backboard Outside;First mold fission is placed in the first support plate on the inside of the first backboard, the first side plate, the second side plate are put respectively It sets in the first mold fission two sides, the second edge of the second side plate, the first edge of the first side plate are pressed in the first mold fission At both sides of the edge, bolt passes through the first connection through slot of the second engaging lug through-hole of the second side plate, the first backboard, and bolt passes through the First mold fission is fixedly clamped by the first engaging lug through-hole of side plate, the first connection through slot, screwing bolts;
Bolt passes through the pedestal connection through-hole of attachment base, attachment base is fixed on the second backboard by the second connection through-hole of the second backboard Outside;Second mold fission is placed in the second support plate on the inside of the second backboard, the first side plate, the second side plate are put respectively It sets in the second mold fission two sides, the second edge, the first edge are pressed in the edge of the second mold fission, and bolt passes through second and connects Lug through-hole, the second connection through slot, bolt pass through the first engaging lug through-hole, the second connection through slot, and screwing bolts are by the second mold Fission is fixedly clamped;
First backboard, the second backboard are placed on, sliding rail is located at first sliding groove, in second sliding slot;By two second sand Case is individually positioned in the type chamber lower part of seperated, second type chamber fission the composition of the first type chamber;Seperated, the second mold by the first mold Seperated inner wall is opposite to be merged, and rotates the handle of two sides, two U-shaped yokes are snapped onto respectively on two the second link blocks;By two A sandbox Split assembled is at the first sandbox and to be mounted on sandbox that the first sandbox divides chamber, the second sandbox that chamber is divided to surround point intracavitary.
7. using the hot-loading and hot-conveying casting method of graphite jig as claimed in claim 6, which is characterized in that molten steel injects graphite mo(u)ld The step of tool includes:
Molten steel enters from the main running channel of the first sandbox, and the type chamber of graphite jig is entered from branch's running channel;Molten steel is infused since bottom The gap that full second sandbox, type chamber surround, it is logical that molten steel forms bucket tooth connecting pin in the gap that pin, semicircle groove body surround Hole;
Liquid steel level continues to be raised above type is intracavitary, until being full of type chamber, the cooling molten steel of graphite jig, molten steel is in the intracavitary shape of type At casting;Air in type chamber and molten steel is discharged by gas vent, sandbox venthole, what the second sandbox generated after being heated by molten steel Gas is discharged from the second sandbox bottom.
8. using the hot-loading and hot-conveying casting method of graphite jig as claimed in claim 6, which is characterized in that the pin of the second sandbox In the semi-circular groove body after the first pin hole slot, the combination of the second pin hole slot;First row air drain, the second row air drain of first sandbox Form sandbox venthole, the top end opening of the bottom end opening face gas vent of sandbox venthole.
9. using the hot-loading and hot-conveying casting method of graphite jig as claimed in claim 6, which is characterized in that open graphite jig Step includes: to open molding lock, pulls attachment base, and by the first mold, seperated, the second mold fission is separated;The first sandbox is smashed, Casting is taken out from die ontology;Go to sticks and staves the second sandbox, the first sandbox, the second sandbox disintegrating slag leaked from the sand losing opening of bottom plate Under into the collecting bin of lower part.
10. using the hot-loading and hot-conveying casting method of graphite jig as claimed in claim 9, which is characterized in that give mold sheet again Molten steel is refilled after the first sandbox of body installation filling, the second sandbox to cast.
CN201910309105.8A 2019-04-17 2019-04-17 Hot charging and hot delivery casting method adopting graphite mold Expired - Fee Related CN110000336B (en)

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CN201931047U (en) * 2010-11-24 2011-08-17 廖杏煌 Excavator bucket tooth manufacturing device
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CN107309405A (en) * 2017-06-06 2017-11-03 洛阳双瑞特种装备有限公司 A kind of casting method of super-duplex stainless steel 5A material impellers
CN109261899A (en) * 2018-11-27 2019-01-25 汪学军 The casting method of the mechanical dedicated high-alloy steel creeper tread of large-scale mine
CN109304425A (en) * 2018-11-27 2019-02-05 胡敏 A kind of manufacturing method of mining machinery axle casting
KR20190030480A (en) * 2017-09-14 2019-03-22 (주)성철기계금속 Wheel blade having a high hardness and anti-wearness, and making method there-of, and Die for making a wheel blade
CN109759547A (en) * 2019-01-24 2019-05-17 内蒙古科技大学 Excavator bucket teeth and its manufacturing method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101491829A (en) * 2009-02-20 2009-07-29 中国科学院金属研究所 Casting technique of grain refined solid manganese steel frog of long life
CN201931047U (en) * 2010-11-24 2011-08-17 廖杏煌 Excavator bucket tooth manufacturing device
CN202343866U (en) * 2011-05-11 2012-07-25 昆明理工大学 Graphite die for casting
CN103658548A (en) * 2012-09-21 2014-03-26 上海航天精密机械研究所 Graphite type casting method of cylindrical titanium alloy piece
CN107309405A (en) * 2017-06-06 2017-11-03 洛阳双瑞特种装备有限公司 A kind of casting method of super-duplex stainless steel 5A material impellers
KR20190030480A (en) * 2017-09-14 2019-03-22 (주)성철기계금속 Wheel blade having a high hardness and anti-wearness, and making method there-of, and Die for making a wheel blade
CN109261899A (en) * 2018-11-27 2019-01-25 汪学军 The casting method of the mechanical dedicated high-alloy steel creeper tread of large-scale mine
CN109304425A (en) * 2018-11-27 2019-02-05 胡敏 A kind of manufacturing method of mining machinery axle casting
CN109759547A (en) * 2019-01-24 2019-05-17 内蒙古科技大学 Excavator bucket teeth and its manufacturing method

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