CN107671246A - A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap - Google Patents

A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap Download PDF

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Publication number
CN107671246A
CN107671246A CN201710910032.9A CN201710910032A CN107671246A CN 107671246 A CN107671246 A CN 107671246A CN 201710910032 A CN201710910032 A CN 201710910032A CN 107671246 A CN107671246 A CN 107671246A
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CN
China
Prior art keywords
sand
cap
casting
mould
core box
Prior art date
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.)
Pending
Application number
CN201710910032.9A
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Chinese (zh)
Inventor
温文林
刘春晖
冯奇红
杨永杰
张永芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOUMA JINFENG MACHINERY CASTING Co Ltd
Original Assignee
HOUMA JINFENG MACHINERY CASTING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HOUMA JINFENG MACHINERY CASTING Co Ltd filed Critical HOUMA JINFENG MACHINERY CASTING Co Ltd
Priority to CN201710910032.9A priority Critical patent/CN107671246A/en
Publication of CN107671246A publication Critical patent/CN107671246A/en
Pending 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings

Abstract

The present invention relates to a kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap, the technique is used as core box by designing a set of and completely the same model of D ends end cap hollow cavity shape, the completely the same model of the remaining structure shape after removing hollow cavity with the D ends end cap swage external form associated as master mold and design is also designed simultaneously, then produce to carry by penetrating sand machine and cover the upper of layer of sand, under cover the swage die cavity of sand, and the core for making core box is bonded on swage die cavity, the complete molding cavities of D ends end cap product can be poured into a mould by forming, finally by the die cavity after molten iron casting to mould assembling, after the completion of to be cast, the unpacking D ends end cap part cast.The present invention use Iron Mould Coated Sand cast D ends end cap product, the defects of not only eliminating internal porosity, shrinkage cavity, crackle, and the casting product quality formed is stably, dense internal organization;In addition, Iron Mould Coated Sand technique productions are terse, labor strength is low, and production efficiency is high.

Description

A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap
Technical field
The present invention relates to a kind of Sand-Faced Metal Mould Casting technique, more particularly to a kind of Sand-Faced Metal Mould Casting of casting D ends end cap Technique.
Background technology
In existing industrial production, production D ends end cap casting, using self-hardening sand molding technical matters.The technique exists Following defect in preparation process be present:Because in self-hardening sand technique, molten iron cooling velocity is slow, easily contracting is produced in cast-internal The defects of pine, shrinkage cavity and crackle, cause cast-internal tissue not fine and close, the casting product quality of formation is unstable;In addition, from firmly The cast product of the D ends end cap cast in sand technique not only nodulizing grade low (3 grades) and casting of appearance of cast is coarse, Mechanical processing of casting surplus Greatly, waste of materials, machining cost is caused to raise;And production process is complicated, labor strength is big, low production efficiency.
The content of the invention
In consideration of it, it is an object of the present invention to be directed to drawbacks described above, there is provided a kind of Iron Mould Coated Sand casting of casting D ends end cap Make technique, it is intended to overcome molten iron cooling velocity present in self-hardening sand casting technique is slow, cast-internal is also easy to produce shrinkage porosite, shrinkage cavity and The defects of crackle, and solve not fine and close cast product interior tissue, unstable product quality, production efficiency rate, worker's work The problem of intensity is big.
In order to reach foregoing invention purpose, and then the technical scheme taken is as follows:
A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap, comprises the following steps:
(1) design a set of and completely the same model of D ends end cap hollow cavity shape includes core as core box, the core box Mould under mould and core box on box;
(2) it is complete with D ends end cap remaining structure shape after designing the D ends end cap hollow cavity described in a set of removal step (1) Complete consistent model is as master mold;
(3) the swage external form associated with master mold is made, swage external form and the supporting gap of master mold are 5-7mm;
(4) master mold is fixed in penetrating sand machine, after swage external form and master mold are clamped by penetrating sand machine, treats that penetrating sand machine heats During to 230-270 DEG C, precoated sand is sprayed to pre-designed swage external form by the sand-spraying hole of penetrating sand machine, makes overlay film Sand is full of the cavity between master mold and swage external form, molding after the solidification 25-30 seconds, after natural cooling 25-30s, obtains successively The upper and lower swage external form die cavity for covering sand;
(5) mould under mould on core box and core box is fixed on core making machine, and the next formation core box of mold matching clamp, treat that core making machine adds When heat is to 170-200 DEG C, precoated sand is sprayed to core box inner chamber by the sand-spraying hole of core making machine, opened after solidifying 5-10 minutes Mould, take out core and remove and split seam;
(6) sand mold made from bonding step (5) in the upper and lower swage external form die cavity for covering sand that step (4) obtains, formed The completely the same die cavity that can be used for mould assembling cast with D ends end cap shape;
(7) after placing screen pack in the die cavity of step (6), mould assembling clamps, and is hung on pouring platform;
(8) it is put into smelting furnace and heats after molten iron raw material are matched according to charger sheet, melting tapping temperature is 1550 DEG C;
(9) spheroidising is carried out to molten iron using the method that pours;
(10) poured into a mould after molten iron removes slag and squeeze into instantaneous ferrite inovulant, the duration of pouring is 8 minutes, pouring temperature Control is to be cast to complete taking-up casting of being unpacked after being incubated 40 minutes at 1330-1430 DEG C, obtains required D ends end cap blank zero Part.
Further, the model of design also includes designing and producing moulds of industrial equipment, running gate system, heating in the step (2) Template and base.
Further, the model IFSI260 Ka Siding of the penetrating sand machine cover sand molding machine.
Further, the granularity of the instantaneous ferrite inovulant is 0.5-1.2mm.
Beneficial effects of the present invention:The present invention uses Iron Mould Coated Sand cast D ends end cap cast product, not only eliminates The defects of D ends cover internal shrinkage porosite, shrinkage cavity, crackle, and the casting product quality formed is stable, dense internal organization, nodularization Rank 1-2 levels, graphite size 6-8 levels, casting roughness can reach Ra25 μm;In addition, Mechanical processing of casting surplus can drop to 2.5mm, material is saved, reduced machining cost;It is raw furthermore Iron Mould Coated Sand technique productions are terse, and labor strength is low Efficiency high is produced, same personnel, Iron Mould Coated Sand production efficiency is 6 times of self-hardening sand;Resin sand amount used in casting is few, and can return Receive, manufacturing cost reduces.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 be a kind of casting D ends end cap of the invention Sand-Faced Metal Mould Casting technique in D ends end cap part drawing;
Fig. 2 is the swage figure of swage on D ends end cap designed in the present invention;
Fig. 3 is the swage figure of swage under D ends end cap designed in the present invention;
Fig. 4 is D ends end cap core box upper die structure figure designed in the present invention;
Fig. 5 is Fig. 4 sectional view;
Fig. 6 is D ends end cap core box lower die structure figure designed in the present invention;
Fig. 7 is Fig. 6 sectional view.
Embodiment
The present invention is specifically described with reference to embodiment, in order to art personnel to the present invention Understand.It is necessary that herein the present invention will be further described it is emphasized that embodiment is only intended to, it is impossible to be interpreted as to this The limitation of invention protection domain, art skilled person, the non-intrinsically safe made according to foregoing invention content to the present invention The modifications and adaptations of property, should still fall within protection scope of the present invention.Simultaneously following mentioned raw materials are unspecified, are Commercially available prod:The processing step or preparation method not referred in detail are the processing step and preparation that those skilled in the art know Method.
As shown in figs. 1-7, the Sand-Faced Metal Mould Casting technique of a kind of casting D ends end cap, comprises the following steps:
(1) design a set of and completely the same model of D ends end cap hollow cavity shape includes core as core box, the core box Mould under mould and core box on box;
(2) it is complete with D ends end cap remaining structure shape after designing the D ends end cap hollow cavity described in a set of removal step (1) Complete consistent model is as master mold;The design of the model also includes making moulds of industrial equipment, running gate system, heating template and base;
(3) the swage external form associated with master mold is made, swage external form and the supporting gap of master mold are 5-7mm;
(4) master mold is fixed on model IFSI260 Ka Siding to cover on sand molding machine, by swage external form with master mold by penetrating After sand machine clamps, when penetrating sand machine is heated to 230-270 DEG C, precoated sand is sprayed to setting in advance by the sand-spraying hole of penetrating sand machine In the swage external form counted, precoated sand is set to solidify molding after the 25-30 seconds, nature full of the cavity between master mold and swage external form After cooling down 25-30s, the upper and lower swage external form die cavity for covering sand is obtained successively;
(5) mould under mould on core box and core box is fixed on core making machine, and the next formation core box of mold matching clamp, treat that core making machine adds When heat is to 170-200 DEG C, precoated sand is sprayed to core box inner chamber by the sand-spraying hole of core making machine, opened after solidifying 5-10 minutes Mould, take out core and remove and split seam;The core making machine is core making machine commonly used in the art;
(6) sand mold made from 2 steps (5) of bonding in the upper and lower swage external form die cavity for covering sand that step (4) obtains, Form the die cavity that can be used for mould assembling cast completely the same with D ends end cap shape;
(7) after placing screen pack in the die cavity of step (6), mould assembling clamps, and is hung on pouring platform;
(8) it is put into smelting furnace and heats after molten iron raw material are matched according to charger sheet, melting tapping temperature is 1550 DEG C;
Described charger sheet is as follows:
C:3.88-3.92%;Si:2.6-2.8%;Cu:0.5-0.8%;Mn:0.4-0.9%, remaining is Fe.
(9) spheroidising is carried out to molten iron using the method that pours;
(10) poured into a mould after molten iron removes slag and squeeze into the instantaneous ferrite inovulant that granularity is 0.5-1.2mm, during cast Between be 8 minutes, pouring temperature control at 1330-1430 DEG C, it is to be cast complete insulation 40 minutes after unpack take out casting, obtain Required D ends end cap blank part.
The present invention use Iron Mould Coated Sand cast D ends end cap cast product, not only eliminate D ends cover internal shrinkage porosite, The defects of shrinkage cavity, crackle, and the casting product quality formed is stable, dense internal organization, nodulizing grade 1-2 levels, and graphite is big Small 6-8 levels, casting roughness can reach Ra25 μm;In addition, Mechanical processing of casting surplus can drop to 2.5mm, material has been saved, has been reduced Machining cost;Furthermore Iron Mould Coated Sand technique productions are terse, and labor strength is low, production efficiency is high, same personnel, iron Type covers 6 times that sand production efficiency is self-hardening sand;Resin sand amount used in casting is few and recyclable, and manufacturing cost reduces.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (4)

1. the Sand-Faced Metal Mould Casting technique of a kind of casting D ends end cap, it is characterised in that comprise the following steps:
(1) design a set of and completely the same model of D ends end cap hollow cavity shape includes on core box as core box, the core box Mould under mould and core box;
(2) after designing the D ends end cap hollow cavity described in a set of removal step (1), with D ends end cap remaining structure shape complete one The model of cause is as master mold;
(3) the swage external form associated with master mold is made, swage external form and the supporting gap of master mold are 5-7mm;
(4) master mold is fixed in penetrating sand machine, after swage external form and master mold are clamped by penetrating sand machine, treats that penetrating sand machine is heated to At 230-270 DEG C, precoated sand is sprayed to pre-designed swage external form by the sand-spraying hole of penetrating sand machine, makes precoated sand Full of the cavity between master mold and swage external form, solidify molding after the 25-30 seconds, after natural cooling 25-30s, gone up successively, Under cover the swage external form die cavity of sand;
(5) mould under mould on core box and core box is fixed on core making machine, and the next formation core box of mold matching clamp, treat that core making machine is heated to At 170-200 DEG C, precoated sand is sprayed to core box inner chamber by the sand-spraying hole of core making machine, molds, takes after solidifying 5-10 minutes Go out core and remove and split seam;
(6) sand mold made from bonding step (5) in the upper and lower swage external form die cavity for covering sand that step (4) obtains, formation and D Hold the die cavity that can be used for mould assembling cast that end cap shape is completely the same;
(7) after placing screen pack in the die cavity of step (6), mould assembling clamps, and is hung on pouring platform;
(8) it is put into smelting furnace and heats after molten iron raw material are matched according to charger sheet, melting tapping temperature is 1550 DEG C;
(9) spheroidising is carried out to molten iron using the method that pours;
(10) poured into a mould after molten iron removes slag and squeeze into instantaneous ferrite inovulant, the duration of pouring is 8 minutes, pouring temperature control It is to be cast to complete taking-up casting of being unpacked after being incubated 40 minutes at 1330-1430 DEG C, obtain required D ends end cap blank part.
A kind of 2. Sand-Faced Metal Mould Casting technique of casting D ends end cap according to claim 1, it is characterised in that the step Suddenly the model of design also includes designing and producing moulds of industrial equipment, running gate system, heating template and base in (2).
3. the Sand-Faced Metal Mould Casting technique of a kind of casting D ends end cap according to claim 1, it is characterised in that described to penetrate The model IFSI260 Ka Siding of sand machine cover sand molding machine.
A kind of 4. Sand-Faced Metal Mould Casting technique of casting D ends end cap according to claim 1, it is characterised in that the wink When ferrite inovulant granularity be 0.5-1.2mm.
CN201710910032.9A 2017-09-29 2017-09-29 A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap Pending CN107671246A (en)

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CN201710910032.9A CN107671246A (en) 2017-09-29 2017-09-29 A kind of Sand-Faced Metal Mould Casting technique of casting D ends end cap

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109047665A (en) * 2018-09-30 2018-12-21 侯马市晋烽机械铸造有限公司 A kind of novel non-transmision end end cap Sand-Faced Metal Mould Casting technique

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CN105108070A (en) * 2015-09-26 2015-12-02 侯马市晋烽机械铸造有限公司 Method for casting end cap of non-transmission end of traction motor on subway locomotive
CN105328125A (en) * 2015-09-26 2016-02-17 侯马市晋烽机械铸造有限公司 Casting method of rotor pressing ring for metro locomotive
CN106141090A (en) * 2016-08-31 2016-11-23 侯马市晋烽机械铸造有限公司 A kind of casting technique of Sand-Faced Metal Mould Casting sensor gear
CN106311983A (en) * 2016-08-31 2017-01-11 侯马市威创动力机械有限公司 Method for producing cylinder cover by means of iron mold coated sand technology
CN106641189A (en) * 2016-12-26 2017-05-10 山东时风(集团)有限责任公司 Belt pulley

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DE19509594A1 (en) * 1995-03-16 1996-09-19 Kuepper August Gmbh & Co Kg Core box for producing flash-free casting cores
CN200954539Y (en) * 2006-10-18 2007-10-03 中国科学院金属研究所 Large cast-steel supporting roller casting apparatus
CN104128564A (en) * 2014-08-20 2014-11-05 侯马市晋烽机械铸造有限公司 Casting process of sand-lined metal mold cast nodular iron hinge lug
CN204545324U (en) * 2015-03-11 2015-08-12 江西弘旺汽车制动器制造有限公司 A kind of brake drum swage precoated sand fabrication technique special shape mo(u)lding box swage
CN105081231A (en) * 2015-09-26 2015-11-25 侯马市晋烽机械铸造有限公司 Casting method for hub of heavy truck
CN105108064A (en) * 2015-09-26 2015-12-02 侯马市晋烽机械铸造有限公司 Method for casting bearing cap on subway locomotive by using sand faced permanent iron molding technology
CN105108070A (en) * 2015-09-26 2015-12-02 侯马市晋烽机械铸造有限公司 Method for casting end cap of non-transmission end of traction motor on subway locomotive
CN105328125A (en) * 2015-09-26 2016-02-17 侯马市晋烽机械铸造有限公司 Casting method of rotor pressing ring for metro locomotive
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CN106311983A (en) * 2016-08-31 2017-01-11 侯马市威创动力机械有限公司 Method for producing cylinder cover by means of iron mold coated sand technology
CN106641189A (en) * 2016-12-26 2017-05-10 山东时风(集团)有限责任公司 Belt pulley

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109047665A (en) * 2018-09-30 2018-12-21 侯马市晋烽机械铸造有限公司 A kind of novel non-transmision end end cap Sand-Faced Metal Mould Casting technique

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