CN107971464A - A kind of mould for producing Bitruder barrel liner - Google Patents

A kind of mould for producing Bitruder barrel liner Download PDF

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Publication number
CN107971464A
CN107971464A CN201711238209.1A CN201711238209A CN107971464A CN 107971464 A CN107971464 A CN 107971464A CN 201711238209 A CN201711238209 A CN 201711238209A CN 107971464 A CN107971464 A CN 107971464A
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CN
China
Prior art keywords
box
mould
sprue
forming cavity
producing
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Granted
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CN201711238209.1A
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Chinese (zh)
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CN107971464B (en
Inventor
费文鑫
谷常伟
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MAANSHAN HUAWEI MECHANICAL MACHINERY CO Ltd
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MAANSHAN HUAWEI MECHANICAL MACHINERY CO Ltd
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Priority to CN201711238209.1A priority Critical patent/CN107971464B/en
Publication of CN107971464A publication Critical patent/CN107971464A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/24Moulds for peculiarly-shaped castings for hollow articles
    • 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
    • B22C9/08Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/086Filters
    • 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
    • B22C9/088Feeder heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/10Cores; Manufacture or installation of cores
    • B22C9/106Vented or reinforced cores
    • 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

Abstract

The invention discloses a kind of mould for producing Bitruder barrel liner, belong to field of steel metallurgy.The present invention includes upper box and lower box, a forming cavity for being used to produce Bitruder barrel liner is surrounded between the upper box and lower box, it is provided with the middle part of forming cavity for the molding loam core of twin-screw mounting hole, forming cavity crown center position in upper box is provided with exothermic riser, forming cavity bottom centre position in lower box is provided with graphite chilling block, forming cavity side is symmetrically arranged with ingate close to end, is provided with the pouring basin connected with ingate and cast passage on upper box at the same time.The present invention carries out feeding when being poured into a mould by exothermic riser and graphite chilling block heavy wall position above and below forming cavity, use two sprue gate dispersed metal liquid heats at the same time, the quality of bushing can not only be improved, reduces face checking, and can effectively prevent shrinkage cavity and the generation of shrinkage porosite.

Description

A kind of mould for producing Bitruder barrel liner
Technical field
The present invention relates to extruding machine bushing production mould technical field, is squeezed more specifically to one kind production twin-screw The mould of molding machine barrel liner.
Background technology
Since the outer wall of Bitruder barrel liner is oval, inner wall is poured into the special construction of ∞ types in production During note, the corner regions up and down of cylinder ∞ types belongs to thick big position, and other positions uniform wall thickness, therefore three in casting process The feeding of angular zone seems addition difficult, easily forms shrinkage cavity, in addition connects the bushing locations of cast gate, continuous due to molten metal Wash away, be easily formed shrinkage porosite.And existing mould can not meet the benefit of bushing lower regions and gate area in casting process Contracting, easily produces defect, therefore, the development of Bitruder barrel liner mould has for Bitruder industry There is important meaning.
Through retrieval, existing patent formula discloses.Such as Chinese patent:Application number:2013201440090, patent name:It is a kind of For the cylinder of double screw extruder, the applying date:2013.03.27.The utility model discloses one kind and is used for double screw extruder Cylinder, including outer barrel and bushing, the outer barrel is cuboid, is equipped with ∞ type holes in the outer barrel, the bushing is arranged on institute State in ∞ type holes, and the bushing is matched with the ∞ type holes;The outer barrel upper and lower ends are respectively equipped with least one heating Rod putting hole.It is using the beneficial effect of the technical program:The control accuracy of temperature is effectively improved, to reach more stable extrusion work Skill, more stable product quality, the consumption reduce equipment failure rate, improve finished product rate, saving the energy and spare part, Ke Yichuan Make considerable economic benefit, it is most important that avoid sub-cooled and heating caused by thermal inertia, reduce heat radiation Distance, improves temperature controlled precision and response speed.But its heating rod being disadvantageous in that on the cylinder can not meet The defects of feeding of ∞ types corner region, cylinder easily produces shrinkage porosite or cracking.
And for example Chinese patent:Application number:2010201074175, patent name:A kind of fire resistant anticorrosive twin-screw extrusion Machine machine barrel cylinder, the applying date:2010.01.27.The utility model discloses a kind of fire resistant anticorrosive double screw extruder machine barrel Cylinder, including a housing, it is characterised in that shell inner surface, which is provided with, breathes out C alloy built-up welding erosion resistant coating, breathes out C alloy built-up welding anti-corrosion In shell inner surface, the bushing which can effectively avoid bringing using bushing erosion resistant coating is inside contracted, shifts, served as a contrast for layer fusion Set and the face corrosion at a seam of machine barrel end flanges, the phenomenon of cracking, eliminate the gap between procapsid and liner, substantially increase The resistance to difference variation of machine barrel and etch-proof ability.But it is disadvantageous in that the feeding deficiency of the housing outer surface, easily produces The defects of shrinkage porosite or cracking.
Patent content
1. patent technical problems to be solved
This patent aims to overcome that existing Bitruder bushing casting process middle cylinder body upper and lower surface heavy wall position In the contraction put and bushing with the shrinkage porosite problem of ingate junction, there is provided a kind of Bitruder barrel liner that produces Mould.The feeding when present invention pours into a mould heavy wall position above and below forming cavity by exothermic riser and graphite chilling block, while using two A ingate dispersed metal liquid heat, can not only improve the quality of bushing, reduce face checking, and can effectively prevent from contracting Hole, the generation of shrinkage porosite.
2. technical solution
To reach above-mentioned purpose, technical solution provided by the invention is:
A kind of mould for producing Bitruder barrel liner of the present invention, including upper box and lower box, it is described on A forming cavity for being used to produce Bitruder barrel liner is surrounded between babinet and lower box;It is described shaping cavity wall be in ∞ types, the pointed part of ∞ types centre handing-over form thick big Delta Region;It is provided with the middle part of the forming cavity for twin-screw The molding loam core of mounting hole;Forming cavity crown center position in upper box is provided with exothermic riser;Forming cavity in lower box Bottom centre position is provided with graphite chilling block;The forming cavity side is symmetrically arranged with ingate;Set at the same time on the upper box It is equipped with the pouring basin connected with ingate and cast passage.
As a further improvement on the present invention, the cast passage pours into a mould passage for side putting type, including is arranged on forming cavity Sprue, sprue base, cross gate, common survey riser and the ingate of side medium position, the bottom of the sprue is set There is sprue base, the bottom of sprue base is arc groove;The both sides on the sprue base top are connected with horizontal cross gate It is logical;The end of two cross gates is connected to common side riser;Two common side risers connect in two respectively Cast gate;Described two ingates are communicated with forming cavity.Extend to general covered with filter screen, filter screen on sprue base and cross gate In logical side riser, play a role in filtering.
As a further improvement on the present invention, the sprue is the hollow pipeline of vertical cylinder shape, the sprue position In upper box, sprue is vertically arranged with forming cavity, and sprue bottom is located at the die joint of upper box;The gold of the sprue Belong to liquid arrival end and be provided with funnel shaped pouring basin.
As a further improvement on the present invention, the sprue bottom is connected with the sprue base positioned at lower box, directly pours Road nest bottom is arc groove, can buffer the molten metal into sprue base, and sprue base inner cavity is communicated with the inner cavity of sprue.
As a further improvement on the present invention, be symmetrically arranged with cross gate at the top of the sprue base, the cross gate with Forming cavity is parallel, and the cross gate is communicated with sprue base, and the top of cross gate is located at the die joint of lower box.
As a further improvement on the present invention, the end symmetrical of cross gate described in both sides is communicated with common side riser, described Common side riser is made of the round platform on top and the arc groove of bottom, and round platform is located in upper box, and arc groove is located at nowel In body, arc groove is communicated with cross gate.
As a further improvement on the present invention, the round platform lower part of two common side risers is communicated with ingate, institute State ingate to be located in upper box, ingate bottom is located at the die joint of upper box.
As a further improvement on the present invention, symmetrically arranged two ingates are connected with forming cavity, ingate Height be 0.9 times of casting section thickness, molten metal enters forming cavity by ingate, and two ingate dispersible metal liquid are warm Amount.
As a further improvement on the present invention, the loam core is overlay film sand mud core, by two cylinder overlay films with diameter Sand is crossed to form side by side.
As a further improvement on the present invention, each cylinder both ends of the loam core are symmetrically arranged with venthole.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the advantages that:
(1) a kind of mould for producing Bitruder barrel liner of the invention, including upper box and lower box, it is described A forming cavity for being used to produce Bitruder barrel liner is surrounded between upper box and lower box;The shaping cavity wall In ∞ types, the pointed part of handing-over forms thick big Delta Region among ∞ types;It is provided with the middle part of the forming cavity for double spiral shells The molding loam core of bar mounting hole;Forming cavity crown center position in upper box is provided with exothermic riser;Shaping in lower box Bottom of chamber portion centre position is provided with external chill;The forming cavity side is symmetrically arranged with ingate, is set at the same time on the upper box It is equipped with the pouring basin connected with ingate and cast passage.Delta Region in exothermic riser feeding top box, slows down molten metal Setting time, improves feeding efficiency;When clearing up riser, iron hammer taps riser, time saving and energy saving.In graphite chilling block Quench nowel Delta Region, graphite chilling block refractoriness is high, and thermal conductivity factor is big, with graphite chilling block Quench can preferably solve casting it is loose, Shrinkage Problem, reduces the casting flaws such as spoken parts in traditional operas, stomata;And the convenient recycling of graphite chilling block;
(2) a kind of mould for producing Bitruder barrel liner of the invention, the cast passage is side putting type, bag The sprue for being arranged on forming cavity side medium position, sprue base, cross gate, common survey riser and ingate are included, it is described straight The bottom of running channel is provided with the sprue base that bottom is arc;The both sides on the sprue base top and horizontal cross gate phase Even;The end of two cross gates is connected to common side riser;Two common side risers connect in two respectively Cast gate;Two ingates are connected with forming cavity.Extend to general covered with filter screen, filter screen on sprue base and cross gate In logical side riser.Molten metal rushes in sprue base from sprue by filter screen during cast, and then molten metal turns over, horizontal toward both sides Running channel point, the common side riser bottom in both sides is flowed into from cross gate, and then molten metal turns over again flows into ingate by filter screen, leads to Cross two ingates to enter in whole forming cavity, molten metal passes through the filtering of filter screen at least twice, efficiently reduces metal Liquid field trash enters in forming cavity.Molten metal have passed through multiple buffering at the same time, reduces and forming cavity is washed away, molten metal heat Amount is also effectively disperseed;
(3) a kind of mould for producing Bitruder barrel liner of the invention, the sprue is vertical cylinder shape Hollow pipeline, sprue are vertically arranged with forming cavity, and the molten metal arrival end of the sprue, which is provided with outside funnel shaped, to be poured Mouthful.Funnel shaped pouring basin accepts the molten metal from casting ladle, prevents from splashing and overflows, convenient cast, while reduces molten metal To directly impacting for mould;
(4) a kind of mould for producing Bitruder barrel liner of the invention, the sprue bottom is connected with position In the sprue base of lower box, sprue base bottom is arc groove, can buffer metal liquid buffer metal liquid, avoid sand washing from being formed Sand hole;
(5) a kind of mould for producing Bitruder barrel liner of the invention, the sprue base top are symmetrically set Cross gate is equipped with, the cross gate is parallel with forming cavity, and the cross gate is communicated with sprue base.Both sides cross gate dispersed metal Liquid heat, buffer metal liquid wash away forming cavity and loam core;
(6) a kind of mould for producing Bitruder barrel liner of the invention, the end pair of cross gate described in both sides Title is communicated with common side riser, and the common side riser is made of the round platform on top and the arc groove of bottom, and round platform is positioned at upper In babinet, arc groove is located in lower box, and arc groove is communicated with cross gate.Two common side risers store and feed shaping Molten metal needed for chamber, disperses feeding, high insulating effect, prevents shrinkage cavity and porosity sum aggregate slag;
(7) a kind of mould for producing Bitruder barrel liner of the invention, the circle of two common side risers Platform lower part is communicated with ingate, and the ingate is located in upper box.Two ingate dispersed metal liquid heats, mitigate because of gold Belong to the long-term of liquid and wash away formation process thermal center, avoid producing shrinkage porosite;
(8) a kind of mould for producing Bitruder barrel liner of the invention, the height of the ingate is casting 0.9 times of wall thickness, that is, play the role of feeding, and is unlikely to produce shrinkage cavity because ingate is excessive;
(9) a kind of mould for producing Bitruder barrel liner of the invention, the loam core is overlay film sand mud core, by Two cylinder precoated sands with diameter are crossed to form side by side.Overlay film sand mud core has high intensity, and high temperature resistant and low bulk etc. are excellent Point, using in Bitruder bushing forming cavity anti-stick grittiness it is good, easy mold release, and surface finish of casting is high;
(10) a kind of mould for producing Bitruder barrel liner of the invention, each cylinder two of the loam core End is symmetrically arranged with venthole.Venthole can exclude the gas produced in casting process, reduce the incidence of bleb, keep away Exempt from the generation of waste product.
Brief description of the drawings
Fig. 1 is the main structure diagram of Bitruder barrel liner mould;
Fig. 2 is the positive structure diagram of Bitruder barrel liner mould;
Fig. 3 is the left view structural representation of Bitruder barrel liner mould;
Fig. 4 is the positive structure diagram of upper box;
Fig. 5 is the positive structure diagram of lower box;
Fig. 6 is the schematic diagram of forming cavity cross section;
Fig. 7 is the positive structure diagram of ingate.
Label declaration in schematic diagram:1st, pouring basin;2nd, sprue;3rd, sprue base;4th, cross gate;5th, common side emits Mouthful;6th, ingate;7th, exothermic riser;8th, graphite chilling block;9th, loam core;10th, venthole;11st, forming cavity.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of production Bitruder barrel liner of the present embodiment Mould, including upper box and lower box, surround one and are used to produce Bitruder between the upper box and lower box The forming cavity 11 of barrel liner;11 inner wall of forming cavity is in ∞ types, and the pointed part joined among ∞ types forms thick greatly three Angular zone;The middle part of forming cavity 11 is provided with for the molding loam core 9 of twin-screw mounting hole;Forming cavity 11 in upper box Crown center position is provided with exothermic riser 7;11 bottom centre position of forming cavity in lower box is provided with graphite chilling block 8;Institute State 11 side of forming cavity and ingate 6 is symmetrically arranged with rear ends, be provided with and ingate 6 at the same time on the upper box The pouring basin 1 and cast passage of connection.
1.8~2.2 times of a diameter of casting thermal center circular diameter of exothermic riser in the present embodiment, in exothermic riser feeding top box Delta Region, slow down the setting time of molten metal, improve feeding efficiency;When clearing up riser, iron hammer taps riser, time saving It is laborsaving.
Graphite chilling block thickness is 0.7~0.8 times of casting thermal center circular diameter in the present embodiment, in graphite chilling block Quench nowel Delta Region, graphite chilling block refractoriness is high, and thermal conductivity factor is big, with graphite chilling block Quench can preferably solve casting it is loose, Shrinkage Problem, reduces the casting flaws such as spoken parts in traditional operas, stomata;And the convenient recycling of graphite chilling block.
Embodiment 2
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment Tool, the cast passage pours into a mould passage for side putting type, including is arranged on the sprue 2 of 11 side medium position of forming cavity, directly pours Road nest 3, cross gate 4, common survey riser 5 and ingate 6, the bottom of the sprue 2 are provided with the sprue that bottom is arc Nest 3;The both sides on 3 top of sprue base are connected with horizontal cross gate 4;The end of two cross gates 4 connects respectively There is common side riser 5;Two common side risers 5 connect two ingates 6 respectively;Described two ingates 6 and forming cavity 11 are connected.Covered with filter screen on sprue base 3 and cross gate 4, filter screen is extended in common side riser 5, is played filtering and is made With.
Molten metal is poured into from sprue 2 in the present embodiment, and sprue base 3 is rushed in by filter screen, and then molten metal turns over, Divide toward both sides cross gate 4, flow into common 5 bottom of side riser in both sides from cross gate 4, then molten metal is turned over by filter screen stream again Entering ingate 6, entered by two ingates 6 in whole forming cavity 11, molten metal passes through the filtering of filter screen at least twice, Efficiently reduce molten metal field trash to enter in forming cavity 11, while molten metal have passed through multiple buffering, reduce to shaping Chamber and loam core are washed away, and molten metal heat is also effectively disperseed.
Embodiment 3
As depicted in figs. 1 and 2, a kind of mould for producing Bitruder barrel liner of the present embodiment, it is described directly to pour Road 2 is the hollow pipeline of vertical cylinder shape, and the sprue 2 is located in upper box, and sprue 2 is vertically arranged with forming cavity 11, 2 bottom of sprue is located at the die joint of upper box;The molten metal arrival end of the sprue 2 is provided with funnel shaped pouring basin 1.
Molten metal is poured into from funnel shaped pouring basin 1 in the present embodiment, by sprue 2, flows into sprue base 3.Funnel The pouring basin 1 of shape accepts the molten metal from casting ladle, prevents from splashing and overflows, convenient cast, while reduces molten metal to directly pouring Road 2 directly impacts;
Embodiment 4
As shown in Figure 1, Figure 2 and Figure 3, a kind of mould for producing Bitruder barrel liner of the present embodiment, it is described 2 bottom of sprue is connected with the sprue base 3 positioned at lower box, and 3 bottom of sprue base is arc groove, can buffer to enter and directly pour The molten metal of road nest 3, avoids sand washing from forming sand hole.
3 inner cavity of sprue base is communicated with the inner cavity of sprue 2 in the present embodiment.
Embodiment 5
As shown in Figure 1 and Figure 5, a kind of mould for producing Bitruder barrel liner of the present embodiment, it is described directly to pour The top of road nest 3 is symmetrically arranged with cross gate 4, and the cross gate 4 is parallel with forming cavity 11, the cross gate 4 and sprue base 3 Communicate, the top of cross gate 4 is located at the die joint of lower box.
4 dispersed metal liquid heat of both sides cross gate, buffer metal liquid wash away forming cavity and loam core in the present embodiment.
Embodiment 6
As shown in Figure 1, Figure 2 and Figure 3, a kind of mould for producing Bitruder barrel liner of the present embodiment, both sides The end symmetrical of the cross gate 4 is communicated with common side riser 5, and the common side riser 5 is by the round platform on top and the arc of bottom Connected in star forms, and round platform is located in upper box, and arc groove is located in lower box, and arc groove is communicated with cross gate 4.
Two common side risers 5 store and feed molten metal needed for forming cavity 11 in the present embodiment, dispersible feeding.
Embodiment 7
As shown in figures 1 and 3, a kind of mould for producing Bitruder barrel liner of the present embodiment, described in two The round platform lower part of common side riser 5 is communicated with ingate 6, and the ingate 6 is located in upper box, and 6 bottom of ingate is located at The die joint of upper box.
Symmetrically arranged two ingates dispersed metal liquid heat in the present embodiment, mitigates because the long-term of molten metal washes away shape Into technique thermal center, avoid producing shrinkage porosite.
Embodiment 8
As shown in Fig. 1, Fig. 3 and Fig. 7, a kind of mould for producing Bitruder barrel liner of the invention, symmetrically sets Two ingates put are connected with forming cavity, and the height h of ingate is 0.9 times of casting section thickness.
Ingate plays the role of feeding in the present embodiment, and is unlikely to produce shrinkage cavity because ingate is excessive.
Embodiment 9
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of mould for producing Bitruder barrel liner of the present embodiment, The loam core 9 is overlay film sand mud core, is crossed to form side by side by two cylinder precoated sands with diameter.Overlay film sand mud core use exists Anti-stick grittiness is good in Bitruder bushing forming cavity, easy mold release, and surface finish of casting is high.
Embodiment 10
As shown in Figure 1, Figure 2 and Figure 3, a kind of mould for producing Bitruder barrel liner of the present embodiment, it is described Each cylinder both ends of loam core 9 are symmetrically arranged with venthole 10.
The venthole of at least two and its above, venthole 10 can exclude the gas produced in casting process in the present embodiment Body, reduces the incidence of bleb, avoids the generation of waste product.
Embodiment 11
As shown in Figure 1, Figure 2, shown in Fig. 5, Fig. 6 and Fig. 7, a kind of mould for producing Bitruder barrel liner of the present embodiment Tool, wherein casting technique comprises the following steps:
Step 1:Mulling, the Properties Control of sand is in moisture 4.5~5.5%, gas permeability 110~140, and green compression strength 120~ 150kPa, compact rate of molding 38~42%;
Step 2:Mould, including mulling, molding modeling and mould assembling are made, formed with two ingates 6 and exothermic riser 7 Upper box and have the lower box of graphite chilling block 8, one is surrounded between upper box and lower box and is used to produce Bitruder The forming cavity 11 of barrel liner, side putting type cast passage is equipped with the upper box and lower box;
Step 3:Cast, including poured into a mould with high vanadium ferrochrome molten iron, molten iron enters twin-screw extrusion by pouring into a mould passage The forming cavity 11 of machine barrel body bushing, until molten iron is completely filled with forming cavity 11;
Step 4:Keep the temperature 4 it is small when after unpack, insulation place keep drying, prevent casting from cracking;
Step 5:Shake out knockout, including babinet is tapped, make its vibrations, sand and casting are just together fallen, and loam core 9 is also at the same time It is defeated and dispersed to come off, then casting is taken out with hook;
Step 6:Dead head is removed, dead head includes exothermic riser 7 and common side riser 5;
Step 7:Ball blast is polished, and ball blast polishing is carried out using hook type shot-blasting machine.
The mould degree of packing of green sand molding is higher in the present embodiment;Delta Region in 7 feeding top box of exothermic riser, subtracts The setting time of slow molten iron, improves feeding efficiency;When clearing up riser, iron hammer taps riser, time saving and energy saving.Graphite chilling block 8 Delta Region in Quench nowel, 8 refractoriness of graphite chilling block is high, and thermal conductivity factor is big, can preferably be solved with 8 Quench of graphite chilling block Loose, the Shrinkage Problem of casting, reduce the casting flaws such as spoken parts in traditional operas, stomata;And the convenient recycling of graphite chilling block 8.Poured in two The scattered molten iron heats of mouth 6, mitigate because the long-term of molten iron washes away formation process thermal center, avoid producing shrinkage porosite.High vanadium ferrochrome molten iron exists By repeatedly buffering in side putting type cast passage, reduce and mould is washed away, molten iron heat is also effectively disperseed.It is small to keep the temperature 4 When more than just allow to unpack, prevent that casting stress is excessive, in addition keep the temperature place keep drying, prevent casting from cracking.
Embodiment 12
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment, Mould is wherein made to comprise the following steps:
(1) molding modeling, in upper box and lower box moulding go out communicated with pouring basin 1 side putting type cast passage, institute Stating side putting type cast passage includes sprue 2, sprue base 3, cross gate 4, common survey riser 5 and ingate 6, the sprue 2 bottom is provided with sprue base 3;3 top of sprue base is connected with horizontal cross gate 4;Two cross gates 4 End be connected to common side riser 5;Two common side risers 5 connect two ingates 6 respectively;Two described interior Cast gate 6 is communicated with forming cavity 11;
(2) mould assembling, forms completed cases to be cast.
High vanadium ferrochrome molten iron rushes in sprue base 3 from sprue 2 by filter screen when being poured into a mould in the present embodiment, then metal Liquid turns over, and divides toward both sides cross gate 4, and common 5 bottom of side riser in both sides is flowed into from cross gate 4, then molten metal turn over again by Filter screen flows into ingate 6, is entered by two ingates 6 in whole forming cavity 11, molten metal passes through filter screen at least two Secondary filtering, efficiently reduces molten metal field trash and enters in forming cavity 11.Molten metal have passed through multiple buffering at the same time, reduce Washing away to forming cavity 11, molten metal heat are also effectively disperseed.
Embodiment 13
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment, Wherein molding modeling comprises the following steps that:
A sprays into releasing agent in upper box moulding machine, reserves 7 position of exothermic riser, then adds green-sand, made after compression Go out funnel shaped pouring basin 1, pouring basin 1 is communicated with side putting type cast passage;
B mould turnovers, then add exothermic riser 7, upper box are made;
C sprays into releasing agent in lower box moulding machine, is put into graphite chilling block 8, then adds green-sand, mould turnover after compression, Lower box is made;
The loam core 9 that d is put into lower box is overlay film sand mud core;
E covers filter screen on the sprue base 3 of lower box, cross gate 4 and common side riser 5.
Releasing agent is conducive to babinet in the present embodiment and moulding machine departs from naturally, not scab;Funnel shaped pouring basin 1 is favourable Sprue 2 is flowed into molten iron, mitigates molten iron washing away to pouring basin 1, avoids band sand from entering molten iron, while prevents splash, improves iron Water use efficiency;Overlay film sand mud core has the advantages that high intensity, high temperature resistant and low bulk, is molded using in Bitruder bushing Anti-stick grittiness is good in chamber 11, easy mold release, and surface finish of casting is high;The filter screen covered in the cast passage of lower box has Reduce molten iron field trash and enter in forming cavity 11 in effect ground.
Embodiment 14
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment, Wherein pouring technology comprises the following steps:
(1) high vanadium ferrochrome hot metal composition is 2.7%C, 0.6%Si, 0.4%Mn, 0.01%P, 0.01%S, 27%Cr, 0.9%Mo, 3.5%V, 64%Fe, remaining for trace element, the trace element contained that can be detected at present include Al, As, B、Bi、 Co、Mg、Nb、Ni、Pb、Cu、Si、Sb、Sn、Ti、W、Zn;
(2) charging sequence of high vanadium ferrochrome molten iron is first to add mild steel, then adds high carbon ferro-chrome and low-carbon chromium at the same time Iron, then adds molybdenum-iron, is eventually adding vanadium iron, the easy scaling loss oxidation of vanadium iron, is eventually adding;
(3) 1620 DEG C of molten iron dischargings, silicon, manganese and 0.1% aluminium wire are added before molten iron discharging and carries out deoxidation;
(4) 1500 DEG C of cast of molten iron, poring rate 1.8kg/s.
High vanadium ferrochrome molten iron casting is used in the present embodiment, can improve the wearability of casting, intensity, toughness, ductility and Heat resistance.
Embodiment 15
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment, Wherein pouring technology comprises the following steps:
(1) high vanadium ferrochrome hot metal composition is 2.9%C, 0.9%Si, 0.8%Mn, 0.03%P, 0.03%S, 29%Cr, 1.1%Mo, 4.5%V, 60%Fe, remaining for trace element, the trace element contained that can be detected at present include Al, As, B、Bi、 Co、Mg、Nb、Ni、Pb、Cu、Si、Sb、Sn、Ti、W、Zn;
(2) charging sequence of high vanadium ferrochrome molten iron is first to add mild steel, then adds high carbon ferro-chrome and low-carbon chromium at the same time Iron, then adds molybdenum-iron, is eventually adding vanadium iron, the easy scaling loss oxidation of vanadium iron, is eventually adding;
(3) 1650 DEG C of molten iron dischargings, silicon, manganese and 0.1% aluminium wire are added before molten iron discharging and carries out deoxidation;
(4) 1550 DEG C of cast of molten iron, poring rate 2.2kg/s.
High vanadium ferrochrome molten iron casting is used in the present embodiment, can improve the wearability of casting, intensity, toughness, ductility and Heat resistance.
Embodiment 16
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment, Wherein pouring technology comprises the following steps:
(1) high vanadium ferrochrome hot metal composition is 2.8%C, 0.8%Si, 0.6%Mn, 0.02%P, 0.02%S, 28%Cr, 1.0%Mo, 4.0%V, 62%Fe, remaining for trace element, the trace element contained that can be detected at present include Al, As, B、Bi、 Co、Mg、Nb、Ni、Pb、Cu、Si、Sb、Sn、Ti、W、Zn;
(2) charging sequence of high vanadium ferrochrome molten iron is first to add mild steel, then adds high carbon ferro-chrome and low-carbon chromium at the same time Iron, then adds molybdenum-iron, is eventually adding vanadium iron, the easy scaling loss oxidation of vanadium iron, is eventually adding;
(3) 1635 DEG C of molten iron dischargings, silicon, manganese and 0.1% aluminium wire are added before molten iron discharging and carries out deoxidation;
(4) 1530 DEG C of cast of molten iron, poring rate 2.0kg/s.
High vanadium ferrochrome molten iron casting is used in the present embodiment, can improve the wearability of casting, intensity, toughness, ductility and Heat resistance, the wearability test experimental data of the present embodiment medium casting see the table below:
1 casting wearability test experimental data table of table
It can be seen from the above test data that, either using block sample or ring sample testing, the wear extent of sample is all Smaller, it can be seen that there is stronger wearability with the Bitruder barrel liner that high vanadium ferrochrome produces.
Embodiment 17
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment Tool, wherein the concrete technology for removing dead head is as follows:
(1) hammering of exothermic riser 7, which is beaten, comes off;
(2) common side riser 5 is first cut into the depth of 6 thickness half of ingate with cutting machine, then is hammered to casting direction It can be made to come off.
Exothermic riser 7 is beaten with hammering in the present embodiment comes off, time saving and energy saving, the defects of will not producing cracking;Common side Cutting machine only needs to be cut into the depth of 6 thickness half of ingate when riser 5 removes, time saving and energy saving, when it also avoid long Between cutting cause heat concentrate and produce cracking the defects of.
Embodiment 18
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of mould for producing Bitruder barrel liner of the present embodiment Tool, the upper box and lower box use Z148 moulding machine sandboxes, and the height of upper box is 250-300mm.
Schematically the present invention and embodiments thereof are described above, this describes no restricted, institute in attached drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So if common skill of this area Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution Similar frame mode and embodiment, are within the scope of protection of the invention.

Claims (10)

1. a kind of mould for producing Bitruder barrel liner, including upper box and lower box, it is characterised in that:On described A forming cavity (11) is surrounded between babinet and lower box;Loam core (9) is provided with the middle part of the forming cavity (11);In upper box Forming cavity (11) crown center position is provided with exothermic riser (7);Forming cavity (11) bottom centre position in lower box is set There is graphite chilling block (8);Forming cavity (11) side is symmetrically arranged with ingate (6), be provided with the same time on the upper box with The pouring basin (1) and cast passage of ingate connection.
A kind of 2. mould for producing Bitruder barrel liner according to claim 1, it is characterised in that:It is described to pour Note passage and pour into a mould passage for side putting type, including be arranged on the sprue (2), sprue base (3), horizontal stroke of forming cavity side medium position Running channel (4), commonly survey riser (5) and ingate (6), the bottom of the sprue (2) are provided with sprue base (3);It is described straight Running channel nest (3) top is connected with horizontal cross gate (4);The end of two cross gates (4) is connected to common side and emits Mouth (5);Two common side risers (5) are connected with ingate (6).
A kind of 3. mould for producing Bitruder barrel liner according to claim 2, it is characterised in that:It is described straight Running channel (2) is the hollow pipeline of vertical cylinder shape, and the sprue (2) is located in upper box, sprue (2) and forming cavity (11) It is vertically arranged, sprue (2) bottom is located at the die joint of upper box;The molten metal arrival end of sprue (2) is provided with infundibulate Pouring basin (1).
A kind of 4. mould for producing Bitruder barrel liner according to Claims 2 or 3, it is characterised in that:Institute State sprue (2) bottom and be connected with sprue base (3) positioned at lower box, sprue base (3) bottom is arc groove, sprue Nest (3) inner cavity is communicated with the inner cavity of sprue (2).
A kind of 5. mould for producing Bitruder barrel liner according to claim 4, it is characterised in that:It is described straight Cross gate (4) is symmetrically arranged with the top of running channel nest (3), the cross gate (4) is parallel with forming cavity (11), the cross gate (4) Communicated with sprue base (3), the top of cross gate (4) is located at the die joint of lower box.
A kind of 6. mould for producing Bitruder barrel liner according to claim 2, it is characterised in that:Both sides institute The end symmetrical for stating cross gate (4) is communicated with common side riser (5), the common round platform and bottom of the side riser (5) by top Arc groove composition, arc groove communicates with cross gate (4).
A kind of 7. mould for producing Bitruder barrel liner according to claim 6, it is characterised in that:Two institutes The round platform lower part for stating common side riser (5) is communicated with ingate (6), and the ingate (6) is located in upper box, ingate (6) bottom is located at the die joint of upper box.
A kind of 8. mould for producing Bitruder barrel liner according to claim 7, it is characterised in that:Symmetrically set Two ingates (6) put are connected with forming cavity (11), and molten metal enters forming cavity (11) by ingate (6).
A kind of 9. mould for producing Bitruder barrel liner according to claim 1, it is characterised in that:The mud Core (9) is crossed to form side by side for two cylinders with diameter.
A kind of 10. mould for producing Bitruder barrel liner according to claim 1 or 9, it is characterised in that:Institute The each cylinder both ends for stating loam core (9) are symmetrically arranged with venthole (10).
CN201711238209.1A 2017-11-30 2017-11-30 Mould for producing double-screw extruder barrel bushing Active CN107971464B (en)

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CN108637179A (en) * 2018-05-17 2018-10-12 西峡县众德汽车部件有限公司 Casting device and the device for being used to prepare heat-resisting steel casting
CN109317620A (en) * 2018-11-30 2019-02-12 马鞍山市华威冶金机械有限公司 A kind of mold and its casting method of batch casting Bitruder barrel liner
CN110039008A (en) * 2019-06-05 2019-07-23 国营第六一六厂 A kind of clearance type rising pouring pressurization system for casting and pouring
CN110405140A (en) * 2019-07-15 2019-11-05 江苏金石铸锻有限公司 The casting device of combined type spheroidal graphite cast-iron brake disc

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CN105562610A (en) * 2016-01-19 2016-05-11 共享装备股份有限公司 Casting all-ceramic pouring mechanism
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CN202291291U (en) * 2011-10-13 2012-07-04 新泰(辽宁)精密设备有限公司 Integral casting die for high-tension switch large aluminum alloy tank body
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CN109317620A (en) * 2018-11-30 2019-02-12 马鞍山市华威冶金机械有限公司 A kind of mold and its casting method of batch casting Bitruder barrel liner
CN110039008A (en) * 2019-06-05 2019-07-23 国营第六一六厂 A kind of clearance type rising pouring pressurization system for casting and pouring
CN110405140A (en) * 2019-07-15 2019-11-05 江苏金石铸锻有限公司 The casting device of combined type spheroidal graphite cast-iron brake disc

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