CN107377886A - The casting grilled mold technique of engine cam - Google Patents
The casting grilled mold technique of engine cam Download PDFInfo
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- CN107377886A CN107377886A CN201710644691.2A CN201710644691A CN107377886A CN 107377886 A CN107377886 A CN 107377886A CN 201710644691 A CN201710644691 A CN 201710644691A CN 107377886 A CN107377886 A CN 107377886A
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- grilled mold
- precoated sand
- sand
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- 238000005266 casting Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 75
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 99
- 229910000600 Ba alloy Inorganic materials 0.000 claims description 26
- 150000008064 anhydrides Chemical class 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910021389 graphene Inorganic materials 0.000 claims description 12
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 11
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 11
- 229960004011 methenamine Drugs 0.000 claims description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 10
- 229920001568 phenolic resin Polymers 0.000 claims description 9
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 8
- 239000008116 calcium stearate Substances 0.000 claims description 8
- 235000013539 calcium stearate Nutrition 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 230000002950 deficient Effects 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 6
- 239000003110 molding sand Substances 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 241000283074 Equus asinus Species 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 238000001994 activation Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- DCXXMTOCNZCJGO-UHFFFAOYSA-N tristearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- OOJQNBIDYDPHHE-UHFFFAOYSA-N barium silicon Chemical compound [Si].[Ba] OOJQNBIDYDPHHE-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/2246—Condensation polymers of aldehydes and ketones
- B22C1/2253—Condensation polymers of aldehydes and ketones with phenols
-
- 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
- B22D27/18—Measures for using chemical processes for influencing the surface composition of castings, e.g. for increasing resistance to acid attack
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Mold Materials And Core Materials (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a kind of casting grilled mold technique of engine cam, including：1), mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；2), add precoated sand to die surface, and precoated sand is smoothed；3), die box is placed into baking box, closes oven door, the frequency of alternating source is adjusted to 35 55Hz, toasts 30 60 seconds, close alternating source, die box naturally cools to 100 150 DEG C in baking box；4) die box, is taken out from baking box, naturally cools to normal temperature, acts mould.The present invention can make being uniformly heated for molding sand when being toasted to model, shrink during cooling consistent, reduce the percent defective of model, improve the castability of camshaft.
Description
Technical field
The present invention relates to the casting grilled mold of engine component manufacturing technology field, more particularly to a kind of engine cam
Technique.
Background technology
Camshaft is a part in piston engine, and its effect is to control unlatching and the closed action of valve.It is convex
Wheel shaft is general very high in in-engine rotating speed, and needs to bear very big moment of torsion, therefore to camshaft in intensity and support
The requirement of aspect is very high；And camshaft bearing is by periodic shock loading, and the contact stress between cam and tappet is very big, phase
It is also very high to sliding speed, therefore the abrasion on cam work surface is than more serious.Therefore, camshaft journal and cam work surface
In addition to due higher dimensional precision, less surface roughness and enough rigidity, should also there is higher wearability and good
Good lubricity.
Camshaft is usually ironcasting, is process by casting., it is necessary to utilize precoated sand before the casting of camshaft
Exploitation moulding is carried out, usual qualified molten iron and qualified model are to obtain two indispensable bars for stablizing qualified cam shaft blank
Part, when molding, model can typically be toasted, to cause molding sand to be bonded together, form die cavity；But at present right
When model is toasted, usually directly model is placed in electric donkey and heated, but like this because model has
Certain thickness, it is directly placed in electric donkey and toasts, the precoated sand of model surface is typically first heated, then by thermal diffusion by heat
The inside of model is delivered to, it is even so to may result in the uneven heating of model, causes to heat and shrinks inconsistent when cooling down, causes
Model deformation, or even waste product is broken into, have a strong impact on the quality of camshaft, increase camshaft casting cost.
The content of the invention
In view of this, can be to mould it is an object of the invention to provide a kind of casting grilled mold technique of engine cam
When type is toasted, make being uniformly heated for molding sand, shrink during cooling consistent, reduce the percent defective of model, improve camshaft
Castability.
The present invention solves above-mentioned technical problem by following technological means：
The casting grilled mold technique of engine cam, using a kind of precoated sand and grilled mold stove, the precoated sand presses quality hundred
Ratio is divided to include：Phenol-formaldehyde resin modified 3.5-6.5%, methenamine 0.5-0.8%, calcium stearate 0.25-0.45%, Si-Ba alloy
4.5-8.5%, basic anhydride 1-2%, surplus are natural silica Sand；The grilled mold stove includes baking box, is provided with the baking box
Magnet coil, alternating source is electrically connected with the magnet coil, the alternating source voltage 220V, frequency 30-60Hz is adjustable；
Grilled mold technique comprises the following steps：
1), mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；
2), add precoated sand to die surface, and precoated sand is smoothed；
3), die box is placed into baking box, closes oven door, the frequency of alternating source is adjusted to 35-55Hz, toasts
The 30-60 seconds, alternating source is closed, die box naturally cools to 100-150 DEG C in baking box；
4) die box, is taken out from baking box, naturally cools to normal temperature, acts mould.
This programme principle：
Phenol-formaldehyde resin modified is made mainly as binding agent, methenamine mainly as curing agent, calcium stearate in precoated sand
For lubricant, prevent from luming, and improve the mobility and release property of precoated sand, the alkaline oxygenated alkalescence that can increase precoated sand, drop
The fusing point of low sand, and make precoated sand to be lumpd during storage, precoated sand mobility is set to be deteriorated, when can improve shell processed
Blast performance；The addition of Si-Ba alloy, first Si-Ba alloy are used as a kind of inovulant in itself, are added in precoated sand, work as cam
After shaft model makes, when being cast, precoated sand has can breed the Si-Ba alloy of molten iron in itself, to molten iron in casting energy
The purpose locally bred to camshaft surface is enough played, promotes the graphitization on camshaft surface, reduces chilling tendency, increase
The hardness of camshaft, furthermore, a kind of Si-Ba alloy conducting metal larger as resistance, it is blended in precoated sand, is being carried out
During grilled mold, alternating current is led to magnet coil using alternating source, when logical alternating current, alternating current produces electromagnetism
So that the Si-Ba alloy in model in precoated sand produces powerful vortex flow, and because has the presence of Si-Ba alloy resistance, silicon
Barium alloy will produce substantial amounts of heat in the case of heavy current, and precoated sand is heated so that molding sand is bonded together, and is formed
Die cavity, because Si-Ba alloy is uniformly dispersed in precoated sand, heat caused by Si-Ba alloy can be uniformly dispersed in model
In so that the grilled mold of model is more uniform, and model is uniformly heated, and shrinks during cooling also just consistent, reduces model
Percent defective, improve the castability of camshaft.
Further, in the step 3, after die box is placed into baking box, chamber door is closed, is first toasted using 35Hz frequencies
The 14-16 seconds, the 45Hz frequencies baking 14-16 seconds are reused, finally toast the 14-16 seconds using 55Hz frequencies.When die box is toasted,
First with low-frequency alternating current, die box is heated, it is then steps to heighten supply frequency, heating-up temperature is improved, in this way,
So that precoated sand temperature step in baking is gradually increasing, beneficial to the shaping of model, the percent defective of model is reduced.
Further, the precoated sand includes by mass percentage：Phenol-formaldehyde resin modified 5%, methenamine 0.7%, tristearin
Sour calcium 0.35%, Si-Ba alloy 6.5%, basic anhydride 1.5%, surplus are natural silica Sand.
Further, the graphene of 2-3% by mass percentage is also included in the precoated sand.Graphene has extraordinary
Thermal conductivity, there is the characteristics of heating fast and rapid heat dissipation, in heating, quickly can be distributed to heat caused by Si-Ba alloy
Whole precoated sand, after being toasted to model, can quickly it cool down, and after pouring, graphene also contributes to iron
The very fast cooled and solidified of water, reduce the time of whole casting cycle, improve production efficiency, reduce production cost.
Further, the basic anhydride include SiO2, CaO, BaO, CrO and MnO.
Further, the basic anhydride are respectively SiO by mass fraction2：20-30 parts, CaO：10-14 parts, BaO：3-5
Part, CrO：2-3 parts, MnO：2-3 parts.
Further, in step 4, after acting mould, chill surface is checked, and sand is cleaned out.
Beneficial effects of the present invention：
1st, this programme leads to alternating current using alternating source when carrying out grilled mold to magnet coil, in logical alternating current
When, alternating current produces electromagnetic field so that the Si-Ba alloy in model in precoated sand produces powerful vortex flow, and because has
The presence of Si-Ba alloy resistance, Si-Ba alloy will produce substantial amounts of heat in the case of heavy current so that and molding sand is bonded together,
Die cavity is formed, because Si-Ba alloy is uniformly dispersed in precoated sand, heat caused by Si-Ba alloy can be uniformly dispersed in
In model so that the grilled mold of model is more uniform, and model is uniformly heated, and shrinks during cooling also just consistent, reduces mould
The percent defective of type, improve the castability of camshaft；
2nd, when this programme is cast, precoated sand has the Si-Ba alloy that can breed molten iron in itself, and molten iron is being cast
When can play the purpose locally bred to camshaft surface, promote the graphitization on camshaft surface, reduce chilling tendency,
Increase the hardness of camshaft；
3rd, this programme adds graphene in precoated sand, and graphene has extraordinary thermal conductivity, has heating soon and scattered
The characteristics of heat is fast, in heating, heat caused by Si-Ba alloy quickly can be distributed to whole precoated sand, entered when to model
After row baking, can quickly it cool down, and after pouring, graphene also contributes to the very fast cooled and solidified of molten iron, reduces
The time of whole casting cycle, production efficiency is improved, reduce production cost.
Embodiment
Below for the casting grilled mold technique of the engine cam of this programme, following examples experiment is carried out, such as the institute of table 1
Show：
The casting grilled mold process parameter table of the engine cam of 1 embodiment 1- embodiments of table 8
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Phenolic resin (%) | 5 | 5 | 3.5 | 6.5 | 5 | 5 | 5 | 5 |
| Methenamine (%) | 0.7 | 0.7 | 0.5 | 0.8 | 0.7 | 0.7 | 0.7 | 0.7 |
| Calcium stearate (%) | 0.35 | 0.35 | 0.25 | 0.45 | 0.35 | 0.35 | 0.35 | 0.35 |
| Si-Ba alloy (%) | 6.5 | 6.5 | 4.5 | 8.5 | 6.5 | 6.5 | 6.5 | 6.5 |
| Basic anhydride (%) | 1.5 | 1.5 | 1 | 2 | 1.5 | 1.5 | 1.5 | 1.5 |
| Graphene (%) | 2.5 | 0 | 2 | 3 | 2.5 | 2.5 | 2.5 | 2.5 |
| Natural silica Sand (%) | 83.45 | 85.95 | 88.25 | 78.75 | 83.45 | 83.45 | 83.45 | 83.45 |
Embodiment 1：
The casting grilled mold technique of engine cam, using a kind of precoated sand and grilled mold stove, the precoated sand presses quality hundred
Ratio is divided to include：It is phenol-formaldehyde resin modified 5%, methenamine 0.7%, calcium stearate 0.35%, Si-Ba alloy 6.5%, alkaline oxygenated
Thing 1.5%, graphene 2.5%, natural silica Sand 83.45%；The grilled mold stove includes baking box, and electromagnetic wire is provided with the baking box
Enclose, be electrically connected with alternating source on the magnet coil, the frequency 30-60Hz of the alternating source is adjustable, voltage 220V；Wherein
Basic anhydride are respectively SiO by mass fraction2：20-30 parts, CaO：10-14 parts, BaO：3-5 parts, CrO：2-3 parts, MnO：2-
3 parts；
Grilled mold technique comprises the following steps：
1st, mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；
2nd, add precoated sand to die surface, and precoated sand is smoothed；
3rd, die box is placed into baking box, closes oven door, first toasted 15 seconds using 35Hz frequencies, reuse 45Hz frequencies
Rate is toasted 15 seconds, is finally toasted 15 seconds using 55Hz frequencies, closes alternating source, and die box naturally cools to 100- in baking box
150℃；
4th, die box is taken out from baking box, naturally cools to normal temperature, acts mould；
5th, rise after mould, check whether chill surface is stained with sand, if any sand, sand is cleaned out.
The wherein preparation method of precoated sand, comprises the following steps：
(1) methenamine of gross mass 0.7% is converted into the aqueous solution of 25% concentration；
(2) first natural silica Sand is added in oven, natural silica Sand is heated to 100-120 DEG C；
(3) under heating stirring state, the methenamine aqueous solution is sequentially added into natural silica Sand and gross mass 5% is modified
Phenolic resin, apply 500-600W ultrasonic activations 10-20min during stirring；
(4) Si-Ba alloy of gross mass 6.5%, the basic anhydride of gross mass 1.5%, gross mass 2.5% are added in step (3)
Graphene, 30-40min is stirred, applies 700-800W ultrasonic activations during stirring, be eventually adding the stearic acid of gross mass 0.35%,
Stop heating after being sufficiently mixed；
(5) after cooling down, overlay film sand mixture is dried using 30-40 DEG C of temperature, sieved using after crusher in crushing.
Embodiment 2- embodiments 4:
Compared with Example 1, the difference of embodiment 2- embodiments 4 is to carry out engine cam according to the parameter of table 1
Grilled mold before casting.
Embodiment 5：
Compared with Example 1, the difference of embodiment 5 is before carrying out engine cam casting according to the parameter of table 1
Grilled mold,；And directly heated 45 seconds using 30Hz frequencies in step 3.
Embodiment 6：
Compared with Example 1, the difference of embodiment 6 is before carrying out engine cam casting according to the parameter of table 1
Grilled mold,；And directly heated 45 seconds using 40Hz frequencies in step 3.
Embodiment 7：
Compared with Example 1, the difference of embodiment 7 is before carrying out engine cam casting according to the parameter of table 1
Grilled mold,；And directly heated 45 seconds using 50Hz frequencies in step 3.
Embodiment 8：
Compared with Example 1, the difference of embodiment 8 is before carrying out engine cam casting according to the parameter of table 1
Grilled mold,；And directly heated 45 seconds using 60Hz frequencies in step 3.
Comparative example 1：
The casting grilled mold technique of engine cam, using a kind of precoated sand, the precoated sand includes by mass percentage：
Phenol-formaldehyde resin modified 5%, methenamine 0.7%, calcium stearate 0.35%, Si-Ba alloy 6.5%, basic anhydride 1.5%, stone
Black alkene 2.5%, wherein natural silica Sand 83.45%, basic anhydride are respectively SiO by mass fraction2：20-30 parts, CaO：10-
14 parts, BaO：3-5 parts, CrO：2-3 parts, MnO：2-3 parts；
Grilled mold technique comprises the following steps：
1st, mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；
2nd, add precoated sand to die surface, and precoated sand is smoothed；
3rd, die box is placed into baking box, closes oven door, heating oven is to 700-800 degrees Celsius；
4th, die box is taken out from baking box, naturally cools to normal temperature, acts mould；
5th, rise after mould, check whether chill surface is stained with sand, if any sand, sand is cleaned out.
Comparative example 2：
The casting grilled mold technique of engine cam, the precoated sand generally sold using a kind of in the market；
Grilled mold technique comprises the following steps：
1st, mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；
2nd, add precoated sand to die surface, and precoated sand is smoothed；
3rd, die box is placed into baking box, closes oven door, heating oven is to 700-800 degrees Celsius；
4th, die box is taken out from baking box, naturally cools to normal temperature, acts mould；
5th, rise after mould, check whether chill surface is stained with sand, if any sand, sand is cleaned out.
According to above example 1- embodiments 8 and comparative example 1-2, the camshaft cast out 200, during baking, with
Precoated sand surface blackening is defined, and increases hardometer progress Determination of Hardness using permanent instrument HR-150B respectively to the camshaft of casting, and
Percent defective, baking time and cool time are counted, specific test data is as shown in table 2 below：
The statistics and camshaft test data table of the embodiment 1- embodiments 8 of table 2 and comparative example 1-2
It can be seen that from the data of table 2：
1st, contrasted from embodiment 1 and embodiment 2-4, it can be seen that graphene is added in precoated sand can reduce model
Casting and cool time；And phenol-formaldehyde resin modified 5%, methenamine 0.7%, calcium stearate 0.35%, Si-Ba alloy
6.5%th, basic anhydride 1.5%, graphene 2.5%, the precoated sand formula of natural silica Sand 83.45%, the camshaft cast out
Percent defective is lower, and camshaft hardness is bigger.
2nd, contrasted from embodiment 1 and embodiment 5-8, it can be seen that first toasted 15 seconds using 35Hz frequencies, reuse 45Hz
Frequency is toasted 15 seconds, is finally toasted 15 seconds using 55Hz frequencies, the camshaft percent defective cast out is lower, and hardness is higher.
3rd, contrasted from embodiment 1 and comparative example 1, it can be seen that using alternating current Electromagnetic Heating in embodiment 1
Mode, the camshaft percent defective cast out is lower, and the hardness of camshaft is bigger.
4th, contrasted from embodiment 1 and comparative example 2, comparative example 1 and comparative example 2, it can be seen that embodiment
Precoated sand formula in 1 is to reducing percent defective the precoated sand formula and grilled mold technique beneficial, and that pass through embodiment 1 of camshaft
The camshaft percent defective being processed out is lower, and the casting time is shorter, and the camshaft hardness processed is higher, better quality.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferred embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that, technical scheme can be modified
Or equivalent substitution, without departing from the objective and scope of technical solution of the present invention, it all should cover the claim in the present invention
Among scope.The present invention be not described in detail technology, shape, construction part be known technology.
Claims (7)
1. the casting grilled mold technique of engine cam, uses a kind of precoated sand and grilled mold stove, it is characterised in that：The precoated sand
Include by mass percentage：Phenol-formaldehyde resin modified 3.5-6.5%, methenamine 0.5-0.8%, calcium stearate 0.25-0.45%,
Si-Ba alloy 4.5-8.5%, basic anhydride 1-2%, surplus are natural silica Sand；The grilled mold stove includes baking box, the baking box
On be provided with magnet coil, alternating source, the alternating source voltage 220V, frequency 30- are electrically connected with the magnet coil
60Hz is adjustable；
Grilled mold technique comprises the following steps：
1), mould is placed in die box, then chill is placed and is bonded with the cam surface of mould；
2), added to die surface and state precoated sand, and precoated sand is smoothed；
3), die box is placed into above-mentioned baking box, closes oven door, the frequency of alternating source is adjusted to 35-55Hz, toasts
The 30-60 seconds, alternating source is closed, die box naturally cools to 100-150 DEG C in baking box；
4) die box, is taken out from baking box, naturally cools to normal temperature, acts mould.
2. the casting grilled mold technique of engine cam according to claim 1, it is characterised in that：, will in the step 3
After die box is placed into baking box, chamber door is closed, first toasts the 14-16 seconds using 35Hz frequencies, reuses 45Hz frequencies baking 14-
16 seconds, finally toast the 14-16 seconds using 55Hz frequencies.
3. the casting grilled mold technique of engine cam according to claim 2, it is characterised in that：The precoated sand presses matter
Amount percentage includes：Phenol-formaldehyde resin modified 5%, methenamine 0.7%, calcium stearate 0.35%, Si-Ba alloy 6.5%, alkalescence
Oxide 1.5%, surplus are natural silica Sand.
4. the casting grilled mold technique of engine cam according to claim 3, it is characterised in that：In the precoated sand also
Include the graphene of 2-3% by mass percentage.
5. the casting grilled mold technique of engine cam according to claim 4, it is characterised in that：The basic anhydride
Including SiO2, CaO, BaO, CrO and MnO.
6. the casting grilled mold technique of engine cam according to claim 5, it is characterised in that：The basic anhydride
It is respectively SiO by mass fraction2：20-30 parts, CaO：10-14 parts, BaO：3-5 parts, CrO：2-3 parts, MnO：2-3 parts.
7. the casting grilled mold technique of engine cam according to claim 6, it is characterised in that：In step 4, depanning is played
After tool, chill surface is checked, and sand is cleaned out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710644691.2A CN107377886B (en) | 2017-08-01 | 2017-08-01 | The casting grilled mold technique of engine cam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527739A (en) * | 2018-04-19 | 2018-09-14 | 贵州鸿兴时代动力新能源科技有限公司 | A kind of battery cuts peak device |
| CN110625067A (en) * | 2019-11-08 | 2019-12-31 | 含山县能华铸造有限公司 | Preparation method of high-temperature-resistant anti-bonding investment casting shell |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137544A (en) * | 1983-12-26 | 1985-07-22 | Kurimoto Iron Works Ltd | Manufacture of master mold pattern for irregular- shaped pipe |
| CN1070785A (en) * | 1991-08-05 | 1993-04-07 | 迪迪尔-威尔克公司 | The induction heating method of ceramic shaped members |
| CN101020226A (en) * | 2007-03-15 | 2007-08-22 | 繁昌县金贸铸造有限责任公司 | Flange casting process |
| CN101195148A (en) * | 2007-04-05 | 2008-06-11 | 天津市雅步新技术有限公司 | Camshaft sand mold manufactured with tectorial membrane sand with reclaimed sand as roughing sand and manufacturing method thereof |
| CN202033557U (en) * | 2011-05-04 | 2011-11-09 | 京东方科技集团股份有限公司 | Thermocuring equipment |
| CN102688978A (en) * | 2012-06-26 | 2012-09-26 | 长沙南托造型材料有限公司 | Cast aluminum coated sand easily-collapsible additive, coated sand and production method of coated sand |
| CN102861878A (en) * | 2012-10-12 | 2013-01-09 | 胡兵 | Induction heating method and induction heating device universally used in iron section cladding sand cast production line |
| CN103464680A (en) * | 2013-09-18 | 2013-12-25 | 苏州市通润机械铸造有限公司 | Sand mold structure for integrally molded screw compressor case and manufacture and use method of sand mold structure |
| CN104284746A (en) * | 2012-02-23 | 2015-01-14 | 诺沃皮尼奥内股份有限公司 | Turbo-machine impeller manufacturing |
-
2017
- 2017-08-01 CN CN201710644691.2A patent/CN107377886B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137544A (en) * | 1983-12-26 | 1985-07-22 | Kurimoto Iron Works Ltd | Manufacture of master mold pattern for irregular- shaped pipe |
| CN1070785A (en) * | 1991-08-05 | 1993-04-07 | 迪迪尔-威尔克公司 | The induction heating method of ceramic shaped members |
| CN101020226A (en) * | 2007-03-15 | 2007-08-22 | 繁昌县金贸铸造有限责任公司 | Flange casting process |
| CN101195148A (en) * | 2007-04-05 | 2008-06-11 | 天津市雅步新技术有限公司 | Camshaft sand mold manufactured with tectorial membrane sand with reclaimed sand as roughing sand and manufacturing method thereof |
| CN202033557U (en) * | 2011-05-04 | 2011-11-09 | 京东方科技集团股份有限公司 | Thermocuring equipment |
| CN104284746A (en) * | 2012-02-23 | 2015-01-14 | 诺沃皮尼奥内股份有限公司 | Turbo-machine impeller manufacturing |
| CN102688978A (en) * | 2012-06-26 | 2012-09-26 | 长沙南托造型材料有限公司 | Cast aluminum coated sand easily-collapsible additive, coated sand and production method of coated sand |
| CN102861878A (en) * | 2012-10-12 | 2013-01-09 | 胡兵 | Induction heating method and induction heating device universally used in iron section cladding sand cast production line |
| CN103464680A (en) * | 2013-09-18 | 2013-12-25 | 苏州市通润机械铸造有限公司 | Sand mold structure for integrally molded screw compressor case and manufacture and use method of sand mold structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527739A (en) * | 2018-04-19 | 2018-09-14 | 贵州鸿兴时代动力新能源科技有限公司 | A kind of battery cuts peak device |
| CN108527739B (en) * | 2018-04-19 | 2024-01-23 | 贵州鸿兴时代动力新能源科技有限公司 | Battery cutting peak device |
| CN110625067A (en) * | 2019-11-08 | 2019-12-31 | 含山县能华铸造有限公司 | Preparation method of high-temperature-resistant anti-bonding investment casting shell |
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| CN107377886B (en) | 2019-06-04 |
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Denomination of invention: Casting baking process of engine camshaft Effective date of registration: 20210205 Granted publication date: 20190604 Pledgee: Bank of Jinhua Limited by Share Ltd. science and Technology Branch Pledgor: ZHEJIANG BOXING INDUSTRY AND TRADE Co.,Ltd. Registration number: Y2021330000126 |
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Denomination of invention: Casting and baking process of engine camshaft Effective date of registration: 20230314 Granted publication date: 20190604 Pledgee: Bank of Jinhua Limited by Share Ltd. science and Technology Branch Pledgor: ZHEJIANG BOXING INDUSTRY AND TRADE Co.,Ltd. Registration number: Y2023980034781 |
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Denomination of invention: Casting and baking process of engine camshaft Granted publication date: 20190604 Pledgee: Bank of Jinhua Limited by Share Ltd. science and Technology Branch Pledgor: ZHEJIANG BOXING INDUSTRY AND TRADE Co.,Ltd. Registration number: Y2024980007094 |