CN108515145A - A kind of technique based on Pressure casting semiaxis - Google Patents
A kind of technique based on Pressure casting semiaxis Download PDFInfo
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- CN108515145A CN108515145A CN201810331604.2A CN201810331604A CN108515145A CN 108515145 A CN108515145 A CN 108515145A CN 201810331604 A CN201810331604 A CN 201810331604A CN 108515145 A CN108515145 A CN 108515145A
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- riser
- semiaxis
- feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of techniques based on Pressure casting semiaxis, are related to Pressure casting technical field.The present invention comprises the following processes：SS01 riser position is arranged, and SS02 is arranged the core print at cope match plate both ends, and SS03 location As among semiaxis carry out feeding, and SS04 location of C among semiaxis carries out feeding, SS05 cores from casting wall thickness controls, when SS06 coremaking pre-buried combination arbor.The present invention obtains that the degree of packing is higher and uniform casting mold, product size precision are higher by using KW static pressure molding lines；Coordinate riser and the solidification Feeding of hot riser by the chill of design, achieves the resultant effect of adjustment solidification sequence and feeding thermal center；Welding is substituted using combination arbor, reduces welding sequence, improves the rigidity of arbor, eliminate arbor problem on deformation.
Description
Technical field
The invention belongs to Pressure casting technical fields, especially a kind of to be related to a kind of technique based on Pressure casting semiaxis.
Background technology
With economic steady rapid development, China Today, if it is light to have played weight lifting in global economy and international trade
Effect.The foundry engieering of China also constantly leaps progress with the development of economy, has been the maximum casting in the whole world now
Produce, use and merchandise state.
JCB is one of the world's five large-engineerings machinery, agricultural machinery manufacturing company.The babinet class of JCB exploitations, rigid drive axle
Class, segmented drive axle class amount to 50 multiple products.JCB series semiaxis totally 9 kinds of products, casting substance is between 40-80Kg, most
Small wall thickness 10mm, length longest 900mm.And it is even to be primarily present semiaxis wall unevenness, isolates thermal center dispersion, is unfavorable for feeding；
Material is QT450-10, and solidification mode is mushy freezing, and shrinkage porosite tendency is larger.Static pressure line tide mould sand casting mold is soft casting mold, not only
It is unfavorable for using graphitization expansion from feeding, and Shrinkage cavity tendency can be increased.Lower wall thickness easy tos produce variation on semiaxis, and half
Axis longest 900mm, and only both ends support, and by the long-time heating of high temperature liquid iron, intermediate loam core is easy to happen bending and becomes
Shape causes semiaxis top wall thickness thinning, and lower part wall thickness increases.
The essence of Airflow Squeeze Moulding Process is " the pre- consolidation+compacting of air-flow ", is had the advantage that：It can be used for producing thin-walled, ruler
Very little precision height, complex-shaped casting；Casting mold is clear-cut；Case hardness is high and uniform；Pattern draft is small；Template utilization rate
High, technological equipment wears small；Mo(U)ld face roughness is low, casting mold gives up, and type rate is low；Equipment productivity, high degree of automation；Worker
Labor intensity is low.The various integrated advantages of Pressure casting increasingly receive and are applied for foundry enterprise.
In the overall situation of industry restructuring and technological progress, it is inexorable trend, casting that casting develops to high, precision and frontier
Thin-walled, light weight, integration and specious are not required nothing more than, while requiring its intensity and durability yet, and the high-quality of casting is
Developing direction from now on.
Invention content
The purpose of the present invention is to provide a kind of technique based on Pressure casting semiaxis, by using KW static pressure molding lines,
And the solidification Feeding of the chill cooperation riser and hot riser designed, achieve the synthesis of adjustment solidification sequence and feeding thermal center
Effect；Welding is substituted using combination arbor, reduces welding sequence, improves the rigidity of arbor, eliminate arbor problem on deformation.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is a kind of technique based on Pressure casting semiaxis, is comprised the following processes：
SS01 riser position is arranged：Riser is set between two sand cores in a rotationally symmetrical arrangement, and main riser is located at half method of principal axes
Blue boss side；
The core print at cope match plate both ends is arranged in SS02：One is not done at the small core print to split, and pressure ring is done at big core print；It is making
When type, is detected with snap-gauge after lower core, prevent sand core from deflecting；It needs to place exothermic riser, riser bottom Ying Yugu when doing axis, on top box
Plane is mutually neat on fixed board, placement side's chill on nowel casting mold；Pouring temperature is controlled at 1370 ± 10 DEG C；
SS03 location As among semiaxis carry out feeding：Using lower part iron chill shock chilling, eccentric insulation riser fixed point in top is mended
Contracting；Or exothermic riser sleeve feeding is added using side riser；
SS04 location of C among semiaxis carries out feeding：Top, which uses, is convenient for fixed feeding high-efficient exothermic riser feeding,
Lower part uses iron chill shock chilling；Or exothermic riser sleeve feeding is added using side riser；
SS05 cores from casting wall thickness controls：Hot riser is specially poured into a mould into note molten iron, foamed filter piece Design of Runner System
Ceramic filter is arranged in the water inlet end of technique cross gate, and iron liquid first enters riser from running channel, and the hot riser for finally entering cavity is mended
Contracting technique；
Pre-buried combination arbor when SS06 coremaking：By the arbor in cores from casting axially setting one, match in interior arbor interference
The outer arbor of unification.
Further, the upper box assembly line establishes a platform, for placing exothermic riser.
Further, described further includes chill fixed form at B, is comprised the following processes：Chill, system are bonded using loam core
Groove at one is formed when core in loam core, after loam core hardening, cut-and-dried chill is put into groove, is used in combination binder viscous
Tightly.
Further, range of the spacing of the interior arbor and outer arbor in 2-8cm.
The invention has the advantages that：
1) can not use the problem of chill for Pressure casting, make a kind of loam core, chill position is reserved in loam core, will
Under contoured chill in loam core, binder is used in combination to cling, by the loam core of lower adhesive tape chill, realization is set in Pressure casting casting mold
Set the purpose of chill.
2) the chill cooperation riser of this products design and the solidification Feeding of hot riser, achieve adjustment solidification sequence
With the resultant effect of feeding thermal center.
3) liquid iron ballings processing uses lid packet spheroidizing process, the buffer action of backpack cover to make spheroidising in certain pressure
It is carried out under the atmosphere of opposite airtight anoxia, pours method compared to tradition, the absorptivity of magnesium increases in nodulizer and nodularization is anti-
It should stablize relatively, not only reduce nodulizer dosage, but also reduce environmental pollution.Inoculation take " stokehold once breeds+it is instantaneous
Breed dual breed " intensive inoculation effect.
4) high temperature graphitization carburant is added with stove when uses cast iron melting, while instant inoculation technology being coordinated to solve ball
Ironware graphite is coarse and graphite floatation problem.
5) introduces floamed ceramics filtrating piece in running gate system, and the water inlet end in cross gate is arranged, effectively filters molten iron
In impurity, and have hot metal composition homogenizing effect.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is existing Pressure casting core procedure technical arrangement figure；
Fig. 2 is the Pressure casting core procedure technical arrangement figure of the present invention；
Fig. 3 is the semiaxis sand core half section structure diagram of the present invention；
Fig. 4 is the sectional view of location A among semiaxis；
Fig. 5 is location of C part figure among semiaxis.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " trepanning ", "upper", "lower", " thickness ", "top", " in ",
Indicating positions or the position relationship such as " length ", "inner", " surrounding ", are merely for convenience of description of the present invention and simplification of the description, without
It is that the component of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.
Existing static press moulding is common green sand molding consolidation technique on automatic mo(u)lding line, it is considered to be ideal
Formative method, for equipment mainly by even sand hopper, venetian blind type adds sand hopper, gas storage packet and purge valve, multiple contact, strike-off frame, band
Template and pattern plate bolster, lifting working bench, the template of venting plug turn round the compositions such as more changing device, upper spider mobile device, consolidation work
Skill can be divided into Four processes：
(1) add sand：Venetian blind type is entered by even sand hopper in the method fallen naturally and adds sand hopper, a certain amount of molding sand is filled out
Enter in sandbox and strike-off frame.The effect of even sand hopper is that molding sand is evenly distributed on entire sandbox face.The addition of sand is logical
Crossing weighing system or spare time quantitative system can accurately control.Configuration spray parting liquid device, is adding sand inside sand hopper
Parting liquid is sprayed in forward model.
(2) air-flow gives consolidation
Measure hopper moves to plus sand position, while pressure head moves to above cavity, and workbench rises, at this moment pressure head, strike-off frame, sand
Case and template form a closing chamber, quickly open purge valve with pressure according to set time, and air-flow carries molding sand to template side
To flowing, completes good filling and obtain giving consolidation.Air through in pattern plate bolster periphery and template venting plug and air bleeding valve arrange
Go out.
(3) it is compacted
Sand mold obtains final consolidation under multiple-contact compacting, and compacting can be adjusted than pressure in the sections 0.3~1.1Mpa.
(4) molding
Template is detached with casting mold using backhaul molding mode.
JCB series semiaxis totally 9 kinds of products, casting substance is between 40-80Kg, minimum wall thickness (MINI W.) 10mm, length longest
900mm, material QT450-10.Existing Pressure casting technique is susceptible to following ask when preparing the product of JCB series semiaxis
Topic：
One, semiaxis easy tos produce Shrinkage cavity, and semiaxis wall unevenness is even, isolates thermal center dispersion, is unfavorable for feeding；Material is
QT450-10, solidification mode are mushy freezing, and shrinkage porosite tendency is larger.Static pressure line tide mould sand casting mold is soft casting mold, is not only unfavorable for
Using graphitization expansion from feeding, and Shrinkage cavity tendency can be increased.
It please refers to shown in Fig. 3, the contracting of the intermediate sides A recessed position, centre position is because there is loam core in side, and a position is mutually lonely
It is vertical, it is not easy to feeding, easy tos produce Shrinkage cavity；
B lug boss positions are easy shrinkage porosite, and the round ring boss of B location entirety, which is divided into, mutually isolates three sections, is not easy to feeding,
Easy to produce shrinkage cavity；
Two, lower wall thickness easy tos produce variation on semiaxis
Semiaxis longest 900mm, and only both ends support, and by the long-time heating of high temperature liquid iron, intermediate loam core is easy
It occurs bending and deformation, causes semiaxis top wall thickness thinning, lower part wall thickness increases.
The internal request of foregoing shrinkage porosite position and wall thickness change position is very high, slightly defect, dissects energy
It was found that especially location of C.
The present invention is a kind of technique based on Pressure casting semiaxis, is comprised the following processes：
SS01 riser position is arranged：Riser is set between two sand cores in a rotationally symmetrical arrangement, and main riser is located at half method of principal axes
Blue boss side；
As shown in Figure 1, passing through the sandbox for manufacturing experimently semiaxis 3 in a rotationally symmetrical arrangement for the first time according to core procedure technical arrangement
The both ends of 4a, semiaxis 3 in a rotationally symmetrical arrangement are connected to by running channel 402 respectively, and the horizontal position of two-semiaxle 3 mutually staggers, together
The end of side, the semiaxis 3 at flanged end are located at the right side of another semiaxis 3；It was found that have shrinkage porosite at boss near internal flange, and
And the wall thickness on the top of axis is more than outside the margin of tolerance of customer requirement；The process modification of the shrinkage porosite of boss near internal flange：It is first
First consider to place Shaped Iron Chill on big sand core, after trial-production, the shrinkage porosite at boss makes moderate progress, but is still not achieved and wants
It asks, and chill will be placed when each coremaking, difficulty is brought to coremaking work.
Therefore, the position of casting mold is entered by changing main riser, cancels chill, is only had on the boss on the opposite of riser light
Micro pine, improved core procedure technical arrangement are shown in Fig. 2, equally use the sandbox 4b of semiaxis 3 in a rotationally symmetrical arrangement, rotation
The both ends for the semiaxis 3 being arranged symmetrically are connected to by rolling over shape running channel 401 respectively, and the horizontal position of two-semiaxle 3 mutually staggers, the same side
End, the semiaxis 3 at flanged end is located at the left side of another semiaxis 3；Increase ingate simultaneously, on the one hand reduce filling time,
Molten iron is set to be rapidly filled with cavity；Another aspect heating molten steel plays a part of heat effect from continuing into for elephant skin position, avoids
Molten iron cools down too early.
The core print at cope match plate both ends is arranged in SS02：One is not done at the small core print to split, and pressure ring is done at big core print；It is making
When type, is detected with snap-gauge after lower core, prevent sand core from deflecting；It needs to place exothermic riser, riser bottom Ying Yugu when doing axis, on top box
Plane is mutually neat on fixed board, placement side's chill on nowel casting mold；Pouring temperature is controlled at 1370 ± 10 DEG C；
The overproof process modification of the wall thickness of top casting：Since sand core is by both ends positioning support, it is be easy to cause sand core floating,
To cause the wall thickness of top casting overproof.By changing the core print at cope match plate both ends, i.e., at the small core print on do not do one and split,
Pressure ring is done at big core print.
In moulding, is detected with snap-gauge after lower core, prevent sand core from deflecting.When doing axis, upper box assembly line establishes a platform, uses
In placement exothermic riser；It needs to place exothermic riser on top box, riser bottom should be mutually neat with plane in fixed plate, on nowel casting mold
Placement side's chill.Pouring temperature is controlled at 1370 ± 10 DEG C.
SS03 location As among semiaxis carry out feeding：Using 2 Quench of lower part chill, the fixed point of top eccentric insulation riser 1 is mended
Contracting；Or exothermic riser sleeve feeding is added using side riser；
As shown in figure 4, using 2 Quench of lower part chill, top eccentric insulation riser 1 pinpoints feeding solution middle part shrinkage porosite and asks
Topic；As shown in figure 5, part semiaxis centre position is smaller, and the hole of φ 20 requires to cast out, and is not easy to use 1 point of insulated feeder
Feeding is changed to add exothermic riser sleeve feeding using side riser.
SS04 location of C among semiaxis carries out feeding：Top, which uses, is convenient for fixed feeding high-efficient exothermic riser feeding,
Lower part uses 2 Quench of chill；Or exothermic riser sleeve feeding is added using side riser；
Local location is smaller to be not easy to the fixation of insulated feeder 1, and top, which uses, is convenient for fixed feeding high-efficient exothermic riser
Feeding, lower part use 2 Quench of chill；
SS05 cores from casting wall thickness controls：Hot riser is specially poured into a mould into note molten iron, foamed filter piece Design of Runner System
Ceramic filter is arranged in the water inlet end of technique cross gate, and iron liquid first enters riser from running channel, and the hot riser for finally entering cavity is mended
Contracting technique；
Pre-buried combination arbor when SS06 coremaking：By the arbor in cores from casting axially setting one, match in interior arbor interference
The outer arbor of unification.
10 screw-thread steels of pre-buried φ when coremaking increase loam core intensity as arbor, and pre-buried 10 screw-thread steels of φ of loam core still occur
Loam core toasts problem on deformation, and lower wall thickness on casting is caused to change.
Therefore, because one stomidium of semiaxis is smaller, arbor cannot be excessively thick.Using combination arbor, on 10 screw-thread steels of existing φ
Increase by one section of 20 steel pipe of φ, manufacture experimently again, does not find that loam core deforms, casting section thickness variation issue.
Further include 2 fixed form of chill at B, comprises the following processes：Chill 2 is bonded using loam core, in loam core when coremaking
It is upper to form groove at one, after loam core hardening, cut-and-dried chill 2 is put into groove, binder is used in combination to cling.
The processing of elephant skin factor, some semiaxis minimum thickness 10mm, and also length is longer, molten iron flow distance, fills type speed
Degree is slow.In trial-manufacturing process, there are elephant skin in upper surface, causes surface quality of continuous castings difference and part typefounding missing；Therefore, technique
In by elephant skin position increase by two at ingate, on the one hand reduce filling time, so that molten iron is rapidly filled with cavity.On the other hand
Heating molten steel plays a part of heat effect from continuing into for elephant skin position, and molten iron is avoided to cool down too early.
This invention takes following key technologies
1) uses hot riser into note iron for casting section thickness variation, structural complexity and Pressure casting casting mold characteristic
Water, foamed filter piece Design of Runner System.The water inlet end of pouring technology cross gate is arranged ceramic filter, iron liquid first from running channel into
Enter riser, finally enters the hot riser feeding technology of cavity.Ceramic filter can effectively filter the impurity in molten iron, and have molten iron
Ingredient homogenizing effect；Molten iron enters casting mold by riser, improves the feeding efficiency of riser.
2) moulding of this products uses KW static pressure molding lines, obtains that the degree of packing is higher and uniform casting mold, product size precision
It is higher；It is cast online using PUMA full-automobile casting machines.The Automatic Controls such as poring rate, poured weights, current-following inoculation.
Castings material and casting quality can be fully guaranteed.
3) is directed to the situation that portioned product B location chill 2 can not be pre-buried, and chill 2 is bonded using loam core.In mud when coremaking
Groove at one is formed on core, after loam core hardening, cut-and-dried chill 2 is put into groove, binder is used in combination to cling.
4) chill 2 of this products design coordinates riser and the solidification Feeding of hot riser, i.e., is used at the top of location A
Insulated feeder 1 places chill 2 at the boss of bottom.Achieve the resultant effect of adjustment solidification sequence and feeding thermal center.
5) welding is substituted using combination arbor, reduces welding sequence, improves the rigidity of arbor, eliminate arbor deformation
Problem.
6) it is directed to location A thermal center deviation casting center and riser neck has been arrived by casting thermal center using special eccentric cameron core
Feeding effect is improved at place.
7) problem of chill 2 can not be used by being directed to Pressure casting, make a kind of loam core, 2 position of chill is reserved in loam core, will
Under contoured chill 2 in loam core, binder is used in combination to cling, by the loam core of lower adhesive tape chill 2, realized in Pressure casting casting mold
The purpose of chill 2 is set.
8) liquid iron balling processing uses lid packet spheroidizing process, inoculation that oxygen sulphur inovulant is taken " once to breed+wink in stokehold
When breed dual breed " intensive inoculation technology, ensure that the matrix and mechanical performance of high-strength iron casting.
9) high temperature graphitization carburant is added with stove when using cast iron melting, while it is high-strength to coordinate instant inoculation technology to solve
G. Iron Castings graphite is coarse and graphite floatation problem.
10) is for after Pressure casting casting mold sprue cup milling, and surface is crude floating sand and the fast problem of cutter wear, point
Analysis main cause is that the sprue cup profile milling cutter of the import Pressure casting production line is " cross " shape, easily by the good cast gate casting mold of milling
Face shaving.In order to solve this problem, a kind of novel sprue cup profile milling cutter is devised, milling cutter structural reform " cross " shape is plate face
Shape, cutting edge use " three-stage ", and high precision machining, service life is long, high in machining efficiency, meet batch machining production, real
It is good to apply effect.
11) is simulated using the process of setting of InteCast CAE simulation softward not only double of axle casting part, and fills type to it
Process is simulated, and according to analog result and practical condition, is poured into a mould it and is solidified system of risers and optimize.
After Pressure casting casting mold sprue cup milling, surface is crude, hardness is uneven, and rim of a cup has the problem of moisture accumulation,
Our repetition tests, are transformed mo(u)lding line milling cutter air inlet, devise the air water point for mo(u)lding line milling cutter air inlet
From device, implementation result is fine.The technology has declared patent, the patent No.：2016208926031.
For the problem that this project cores from casting degree of packing is uneven, casting is caused the difficult cleaning of loam core sintering, design easily occur
" a kind of anti-sintering loam core manufacture mold " is invented, the loam core degree of packing made is uniform, anti-sintering.The technology has been declared practical new
Type patent, the patent No.：2016208984094.
Sci-tech novelty-search conclusion is：
The Pressure casting of domestic axle housing class product often has document report.In contrast, it is disconnected for JCB large engineering vehicles
Semiaxis, this project in formula drive system the difference is that：
The problem that chill can not be used for Pressure casting, makes a kind of loam core, chill position is reserved in loam core, will be molded
Under chill in loam core, binder is used in combination to cling, by the loam core of lower adhesive tape chill, realization is arranged cold in Pressure casting casting mold
The purpose of iron.
Liquid iron balling processing uses lid packet spheroidizing process, inoculation take oxygen sulphur inovulant " stokehold once breeds+it is instantaneous
Breed dual breed " intensive inoculation technology, it ensure that the matrix and mechanical performance of iron casting.
High temperature graphitization carburant is added with stove using when cast iron melting, while instant inoculation technology being coordinated to solve G. Iron Castings
Graphite is coarse and graphite floatation problem.
After Pressure casting casting mold sprue cup milling, surface is crude floating sand, leads to sand hole defect, manufactures and designs
A kind of novel static pressure foundry pouring cup " three-stage " profile milling cutter, instead of original " cross " profile milling cutter, cast gate cup type face
Bright and clean, service life is long, and precision is high, and efficiency is fast.
1) the JCB semiaxis of batch productions, material meet 5001/2004-Sg iron-BS2789-420/12 (by QT450-
10) standard provides.
2) mechanical performances：479 ＞ 420 (standard) of tensile strength (Mpa)；Elongation after fracture (A/%) 18 >=12 (standard)；
Hardness (BHN) 172 meets 130-180 (standards).
A. Oxygen potential：3 grades；B. graphite size：6 grades；C. metallographic structure：Ferrite+pearlite (10%)+graphite.
4) products matrix detects：Without shrinkage porosite, shrinkage cavity, no stomata for influencing properties of product.
5) shape of product detects：Size is accurate, and any surface finish, complete appearance is without deformation.
6) internal soundnesses, presentation quality meet the drawing technical protocol of JCB companies offer and the regulation of standard.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the present invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the present invention
Principle and practical application, to enable skilled artisan to be best understood by and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (4)
1. a kind of technique based on Pressure casting semiaxis, which is characterized in that comprise the following processes：
SS01 riser position is arranged：Riser is set between two sand cores in a rotationally symmetrical arrangement, and it is convex that main riser is located at half shaft flange
Platform side；
The core print at cope match plate both ends is arranged in SS02：One is not done at the small core print to split, and pressure ring is done at big core print；In moulding
When, it is detected with snap-gauge after lower core, prevents sand core from deflecting；It needs to place exothermic riser when doing axis, on top box, riser bottom should be with fixation
Plane is mutually neat on plate, placement side's chill on nowel casting mold；Pouring temperature is controlled at 1370 ± 10 DEG C；
SS03 location As among semiaxis carry out feeding：Using lower part iron chill shock chilling, top eccentric insulation riser pinpoints feeding；Or
Using side riser plus exothermic riser sleeve feeding；
SS04 location of C among semiaxis carries out feeding：Top, which uses, is convenient for fixed feeding high-efficient exothermic riser feeding, lower part
Using iron chill shock chilling；Or exothermic riser sleeve feeding is added using side riser；
SS05 cores from casting wall thickness controls：Hot riser into note molten iron, foamed filter piece Design of Runner System, specially pouring technology
Ceramic filter is arranged in the water inlet end of cross gate, and iron liquid first enters riser from running channel, finally enters the hot riser feeding work of cavity
Skill；
Pre-buried combination arbor when SS06 coremaking：By the arbor in cores from casting axially setting one, one is interference fitted in interior arbor
Outer arbor.
2. a kind of technique based on Pressure casting semiaxis according to claim 1, which is characterized in that the upper box assembly line
A platform is established, for placing exothermic riser.
3. a kind of technique based on Pressure casting semiaxis according to claim 1, which is characterized in that further include cold at B
Ferropexy mode, comprises the following processes：Chill is bonded using loam core, when coremaking forms groove at one in loam core, waits for that loam core is hard
After change, cut-and-dried chill is put into groove, binder is used in combination to cling.
4. a kind of technique based on Pressure casting semiaxis according to claim 1, which is characterized in that the interior arbor with it is outer
Range of the spacing of arbor in 2-8cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810331604.2A CN108515145B (en) | 2018-04-13 | 2018-04-13 | Process based on static pressure casting half shaft |
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| CN201810331604.2A CN108515145B (en) | 2018-04-13 | 2018-04-13 | Process based on static pressure casting half shaft |
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| CN108515145B CN108515145B (en) | 2022-02-25 |
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| CN201810331604.2A Active CN108515145B (en) | 2018-04-13 | 2018-04-13 | Process based on static pressure casting half shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115475911A (en) * | 2022-09-05 | 2022-12-16 | 青岛理工大学 | Casting method of engine body cover |
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| CN102825216A (en) * | 2011-06-13 | 2012-12-19 | 鞍钢重型机械有限责任公司 | Casting method for thermal power ultra-supercritical valve cover |
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| CN203764902U (en) * | 2014-03-17 | 2014-08-13 | 成都金顶精密铸造有限公司 | Casting mold for solid cam shaft |
| CN204639105U (en) * | 2015-04-08 | 2015-09-16 | 桐乡合德机械有限公司 | Eccentric riser pad |
| CN107685135A (en) * | 2017-08-22 | 2018-02-13 | 安徽合力股份有限公司合肥铸锻厂 | Pressure casting brakes hub casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1356188A (en) * | 2000-11-26 | 2002-07-03 | 胡德智 | Technology for casting crankshaft of cast steel |
| JP2003311371A (en) * | 2002-04-26 | 2003-11-05 | Hiroshima Aluminum Industry Co Ltd | Method for casting vacuum chamber into sand mold |
| CN101780537A (en) * | 2009-12-28 | 2010-07-21 | 临沂蒙凌铸钢有限公司 | Method for casting low-alloy cast steel automobile axle housing through V-process technology |
| CN201906792U (en) * | 2010-12-09 | 2011-07-27 | 四川海科机械制造有限公司 | Shock-chilling shape follow-up core rod |
| CN102825216A (en) * | 2011-06-13 | 2012-12-19 | 鞍钢重型机械有限责任公司 | Casting method for thermal power ultra-supercritical valve cover |
| CN202715785U (en) * | 2012-08-20 | 2013-02-06 | 桐乡合德机械有限公司 | Combined type core bar used for long and thin hole casting |
| CN103551509A (en) * | 2013-08-24 | 2014-02-05 | 中国北车集团大同电力机车有限责任公司 | HXB2 axle box casting method |
| CN203764902U (en) * | 2014-03-17 | 2014-08-13 | 成都金顶精密铸造有限公司 | Casting mold for solid cam shaft |
| CN204639105U (en) * | 2015-04-08 | 2015-09-16 | 桐乡合德机械有限公司 | Eccentric riser pad |
| CN107685135A (en) * | 2017-08-22 | 2018-02-13 | 安徽合力股份有限公司合肥铸锻厂 | Pressure casting brakes hub casting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115475911A (en) * | 2022-09-05 | 2022-12-16 | 青岛理工大学 | Casting method of engine body cover |
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