CN107433326A - A kind of pile punching ground auger - Google Patents
A kind of pile punching ground auger Download PDFInfo
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- CN107433326A CN107433326A CN201710589479.0A CN201710589479A CN107433326A CN 107433326 A CN107433326 A CN 107433326A CN 201710589479 A CN201710589479 A CN 201710589479A CN 107433326 A CN107433326 A CN 107433326A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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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
- B22D27/02—Use of electric or magnetic effects
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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Abstract
A kind of pile punching ground auger, belong to metal model casting field.The present invention provides a kind of pile punching ground auger by waterglass model casting, by metallic mold, prepares ultra-thin shell, moulding by casting in magnetic field.Ultra-thin shell includes thin wax layer, resinous coat, back-up coat successively from inside to outside.Face coat component therein is 30 50 parts by weight silica flours, 10 15 parts by weight organosilicon acrylic resins, 5 10 parts by weight waterglass, 50 60 parts by weight alcohol；Reinforcing layer component is 30 40 parts by weight silica flours, 10 15 parts by weight TiC, 10 20 parts by weight lignin, 5 10 parts by weight bauxites, 50 60 parts by weight water.The present invention solves after casting the problems such as alloy structure is loose, coarse grains, inside are also easy to produce shrinkage cavity and porosity, impact toughness decreased, so as to lift alloy rigidity, wear-resisting, antidetonation, shock resistance.
Description
Technical field
The present invention relates to a kind of ground auger, more particularly to a kind of pile punching ground auger, category metal model casting field.
Background technology
Before ground auger is mounted in drilling rod, a kind of instrument on revolution fractured rock road surface.In China, urban construction and greening work
The increase of journey, so the demand of the aid for reducing labor force this to ground auger is also constantly increasing.Prior art is usual
Ground auger is manufactured with casting technique, although this technique can produce complex-shaped, wide adaptability part blank,
It is the defects of alloy structure is loose, coarse grains, and inside is also easy to produce shrinkage cavity and porosity after casting, particularly impact toughness decreased, nothing
Method meets the alloy tool of this high-strength operation of ground auger to hardness, wear-resisting, antidetonation, the demand of shock resistance.Chinese patent is (public
The number of opening：103464683A) disclose a kind of investment casting method, for cast medium casting easily occur shrinkage cavity, rarefaction defect thickness
Big position, after to wax-pattern part paint case making 5-10 layers, conducting-heat elements are placed on outside the dope layer at thick big position, present invention profit
With the high effect of the thermal conductivity ratio shell thermal conductivity of conducting-heat elements, the heat at the thick big position of export in time, thick big position is accelerated to coagulate
Gu cooling velocity, consecutive solidification is realized, so as to eliminate the shrinkage cavity at thick big position, rarefaction defect.But this patent paint case making needs
5-10 layers are wanted, material cost is high, and realizes consecutive solidification by conducting-heat elements, reduces production efficiency.
The content of the invention
The purpose of the present invention is to be directed to the above-mentioned problems in the prior art, it is proposed that a kind of high rigidity, high abrasion, height
The pile punching ground auger of toughness.
The above-mentioned purpose of the present invention is realized by following technical solution：A kind of pile punching ground auger, described pile
Punching is formed with ground auger by waterglass model casting, and wherein the ultra-thin shell in waterglass model casting includes thin successively from inside to outside
Wax layer, resinous coat, back-up coat.
The different waterglass permanent mo(u)lding methods with prior art of the invention first make wax-pattern shell processed again, its shell directly processed, and formwork
It is very thin.This ultra-thin formwork is made up of thin wax layer, single-layer resin coating and individual layer back-up coat, and thin wax layer can also be fused to tree after heating
Fat coating surface, both possess centrifugation, and can, which is saved, loses wax step.Wherein resinous coat good toughness, it can bear interior during cast
External force acts on, and back-up coat hardness is high, is unlikely to deform, high-fire resistance, ultra-thin shell is met all in waterglass model casting
It is required that.The ultra-thin shell of the present invention can solve that made shell is thicker in general waterglass permanent mo(u)lding method, be made up of 5-10 layer high-temperaure coatings, wave
Shell is heated when taking material, and being calcined can not exclusively cause made shell poor surface finish, and shell is blocked up when also pouring into a mould, increase hair
Tolerance, poor radiation, finally make it that alloy structure is loose after casting, coarse grains, inside are also easy to produce shrinkage cavity and porosity, impact is tough
Property decline the problems such as, so as to lift alloy rigidity, wear-resisting, antidetonation, shock resistance.
The preparation method of the ultra-thin shell includes：One group of detachable helical structure metal pattern first is produced with aluminium alloy,
One layer of thin wax of internal spray, then one layer of resinous coat of dip-coating, baking oven heating, at 200-250 DEG C, insulation are put into after sprinkling sand
15-20min, then one layer of back-up coat of dip-coating again, shell is gone out, finally shell is placed in roaster after drying from metal pattern
Ultra-thin shell is obtained after 800-1000 DEG C of roasting temperature 30-60min.The present invention is directly using the good aluminium alloy making group of moulding
Mould, removable subassembly, contentedly to bore helical structure, fractionation mould making process is more simple, is combined into complicated.This gold
Category mould hardness is high, model consolidates, can be separated after formwork shaping, and acquisition formwork is thinner, and can reuse, and saves into
This, improves production efficiency.
Described face coat component is 30-50 parts by weight silica flour, 10-15 parts by weight organosilicon acrylic resin, 5-10 parts by weight
Waterglass, 50-60 parts by weight alcohol.Silica flour is high refractory material in resinous coat, and organosilicon acrylic resin is high tenacity bonding agent, also
Coating surface finish can be improved, waterglass can make coating tough words, and alcohol is solvent.
Described reinforcing layer component be 30-40 parts by weight silica flour, 10-15 parts by weight TiC, 10-20 parts by weight lignin,
5-10 parts by weight bauxite, 50-60 parts by weight water.Back-up coat silica flour is high refractory material, and TiC hardness is high, moreover it is possible to prevents material
Expect high-temperature oxydation, lignin has extremely strong viscosity, can combine coating, and bauxite, which serves, reinforces coating, and water is solvent.
Described sand is the quartz sand of granularity 50-100 mesh.The quartz sand of certain particle size is added in resinous coat and reinforcing
Between layer, by increasing capacitance it is possible to increase shell hardness.The too small increase hardness unobvious of granularity, granularity is too big, can influence ultra-thin thickness of the shell.
A kind of preparation method of pile punching ground auger, described preparation method comprise the following steps：
S1, pile punching stirred into consolute with the material of ground auger at a temperature of 1300-1400 DEG C, obtaining metal melting and mix
Material；
S2, ultra-thin shell is put into iron box container, fills shot and quartz sand is fixed, and apply magnetic field around；
S3, metal melting batch mixing is poured into the ultra-thin shell in S2 while hot, ground auger blank is obtained after cooling；
S4, Quenching Treatment, temper are carried out to blank；
S5, blank is immersed to zinc-plated in galvanizing flux, acquisition pile punching ground auger.
Outside filling shot is easy to apply magnetic field as floor sand during cast.
Present invention filler in waterglass fusible pattern selects shot, can form stable magnetic field in cast.So in magnetic
Under field force effect, interior metal melting batch mixing flow faster, and have certain directionality, cooling velocity can be accelerated, suppress gold
Category crystal grain is grown up, and so as to effectively avoid the cast iron of shaping from the problems such as shrinkage cavity, loose occur, is made metal structure more tight, is obtained
The ground auger obtained has higher toughness, intensity, wearability.
The pile punching is made up of with ground auger material following percetage by weight component：C：0.2-0.3%, Si：1.30-
1.50%th, Mn：0.80-1.00%, Cr：1.30-1.50%, Ni：0.05-0.10%, Mo：0.05-0.10%, Al：0.04-
0.08%th, P≤0.040%, S≤0.040%, remaining is iron.Material of the present invention is ferrous alloy, doping C, Si, Mn, Cr, Ni,
The elements such as Mo, Al, P, S, the intensity and toughness of energy reinforcing material after poly modified metal adds, to reach the effect of hard alloy
Fruit, reduce production cost.
Described Quenching Treatment is at 850-950 DEG C, is incubated oil cooling after 1-2h.
Described temper is that room temperature cools down after being incubated 4-5h at 150-250 DEG C.
Intensity, hardness can be improved after metal alloy heat treatment, quenching can make in alloy phase austenite to martensite or conversion,
Alloy strength, hardness increase, coordinate Quenching Treatment, reply alloy material toughness, reinforcing material anti-fatigue ability.Oil cooling after quenching
It is due to that cooling velocity is too fast, internal stress is larger, can make that deforming occurs in alloy surface or slight crack, oil cooling change contact medium,
So as to slow down cooling velocity.
Add shared percetage by weight 0.5-2% Nano diamond powder in described galvanizing flux.Zinc coating has in itself
Good anti-corrosion, water-resistant capacity, add the hardness and cutting power of Nano diamond powder increase coating, moreover it is possible to improve coating
Surface flatness, so as to improve the wearability of ground auger.
Compared with prior art, the invention has the advantages that：
1st, wax-pattern making is saved in model casting of the present invention, uses aluminium alloy molding instead, again can be with metal after completion shell processed
Mould separates, and metal pattern can also reuse, and improves production efficiency.
2nd, the made shell of the present invention is ultra-thin formwork, is made up of layer of surface coating and one layer of back-up coat, compared to needing 5-10
The formwork of floor height refractory coating composition greatlys save material, reduces production cost, and wherein face coat adds organosilicon acrylic resin energy
The surface smoothness of material is increased substantially, so as to improve the wearability of cast article.
3rd, shot is filled outside ultra-thin formwork, stabilizing magnetic field can be formed behind magnetic field by applying, in magnetic force during cast
Under, the ground auger metal structure of shaping is close, without shrinkage cavity, loose phenomenon, increases substantially the hardness, toughness, wearability of material.
And the outside shot put can also be accelerated to pour into a mould aftershaping cooling velocity.
4th, material of the present invention is ferrous alloy, the element such as doping C, Si, Mn, Cr, Ni, Mo, Al, P, S, based on WC
Hard alloy, required melting temperature is lower, reduces production operation difficulty and cost.
Embodiment
It is that specific embodiment of the invention is further described to technical scheme below, but the present invention is not
It is limited to these embodiments.
The embodiment 1-5 resinous coats of table 1 and reinforcing layer material component and its parts by weight
Embodiment 1
Pile punching is stirred into consolute with the material of ground auger at a temperature of 1300 DEG C, obtains metal melting batch mixing；Described
Pile punching is with the material component and its percetage by weight of ground auger：C：0.2%th, Si：1.30%th, Mn：0.80%th, Cr：
1.30%th, Ni：0.05%th, Mo：0.05%, Al：0.04%th, P≤0.040%, S≤0.040%, remaining is iron.
Turn by resinous coat and back-up coat component are separately added into homogenizer in the embodiment 1 of table 1 in 3000r/min
The lower 20min that mixes of speed obtains resinous coat lotion and back-up coat lotion, standby；
One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating
One layer of resinous coat, sprinkle and baking oven heating is put into after sand, at 200 DEG C, be incubated 15min, then one layer of back-up coat of dip-coating again, do
Shell is gone out from metal pattern after dry, finally shell is placed in roaster after 800 DEG C of roasting temperature 30min and obtains ultra-thin shell.
The sand is the quartz sand that specification purchased in market is 40*80 mesh, standby after 50 mesh and the choosing of 100 mesh sieves.
Ultra-thin shell is put into iron box container, shot is filled and quartz sand is fixed, and apply magnetic field around；
Metal melting batch mixing is poured into ultra-thin shell while hot, ground auger blank is obtained after cooling；Blank is first carried out
Quenching is incubated oil cooling after 1-2h at 850-950 DEG C；Then room temperature cools down after temper is incubated 4-5h at 150-250 DEG C；
Blank is immersed to zinc-plated in hot zinc liquid, acquisition pile punching ground auger.Weight shared by being added in described galvanizing flux
Measure the Nano diamond powder of percentage 0.5%.
Embodiment 2
Pile punching is stirred into consolute with the material of ground auger at a temperature of 1340 DEG C, obtains metal melting batch mixing；Described
Pile punching is with the material component and its percetage by weight of ground auger：C：0.22%th, Si：1.35%th, Mn：0.82%th, Cr：
1.35%th, Ni：0.06%th, Mo：0.06%, Al：0.05%th, P≤0.040%, S≤0.040%, remaining is iron.
Resinous coat and back-up coat component are separately added into homogenizer by table 1 and mixed under 3000r/min rotating speeds
Stir 20min and obtain resinous coat lotion and back-up coat lotion, it is standby；
One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating
One layer of resinous coat, sprinkle and baking oven heating is put into after sand, at 210 DEG C, be incubated 16min, then one layer of back-up coat of dip-coating again, do
Shell is gone out from metal pattern after dry, finally shell is placed in roaster after 850 DEG C of roasting temperature 40min and obtains ultra-thin shell.
The sand is the quartz sand that specification purchased in market is 40*80 mesh, standby after 50 mesh and the choosing of 100 mesh sieves.
Ultra-thin shell is put into iron box container, shot is filled and quartz sand is fixed, and apply magnetic field around；
Metal melting batch mixing is poured into ultra-thin shell while hot, ground auger blank is obtained after cooling；
Blank is first quenched at 870 DEG C, be incubated oil cooling after 1.5h；Then temper is incubated 4.5h at 170 DEG C
Room temperature cools down afterwards；
Blank is immersed to zinc-plated in hot zinc liquid, acquisition pile punching ground auger.Weight shared by being added in described galvanizing flux
Measure the Nano diamond powder of percentage 0.8%.
Embodiment 3
Pile punching is stirred into consolute with the material of ground auger at a temperature of 1350 DEG C, obtains metal melting batch mixing；Described
Pile punching is with the material component and its percetage by weight of ground auger：C：0.25%th, Si：1.40%th, Mn：0.85%th, Cr：
1.40%th, Ni：0.07%th, Mo：0.07%, Al：0.06%th, P≤0.040%, S≤0.040%, remaining is iron.
Resinous coat and back-up coat component are separately added into homogenizer by table 1 and mixed under 3000r/min rotating speeds
Stir 20min and obtain resinous coat lotion and back-up coat lotion, it is standby；
One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating
One layer of resinous coat, sprinkle and baking oven heating is put into after sand, at 220 DEG C, be incubated 17min, then one layer of back-up coat of dip-coating again, do
Shell is gone out from metal pattern after dry, finally shell is placed in roaster after 900 DEG C of roasting temperature 45min and obtains ultra-thin shell.
The sand is the quartz sand that specification purchased in market is 40*80 mesh, standby after 50 mesh and the choosing of 100 mesh sieves.
Ultra-thin shell is put into iron box container, shot is filled and quartz sand is fixed, and apply magnetic field around；
Metal melting batch mixing is poured into ultra-thin shell while hot, ground auger blank is obtained after cooling；
Blank is first quenched at 900 DEG C, be incubated oil cooling after 1.5h；Then temper is incubated 4.5h at 200 DEG C
Room temperature cools down afterwards；
Blank is immersed to zinc-plated in hot zinc liquid, acquisition pile punching ground auger.Weight shared by being added in described galvanizing flux
Measure the Nano diamond powder of percentage 1.2%.
Embodiment 4
Pile punching is stirred into consolute with the material of ground auger at a temperature of 1380 DEG C, obtains metal melting batch mixing；Described
Pile punching is with the material component and its percetage by weight of ground auger：C：0.27%th, Si：1.45%th, Mn：0.88%th, Cr：
1.45%th, Ni：0.08%th, Mo：0.08%, Al：0.07%th, P≤0.040%, S≤0.040%, remaining is iron.
Resinous coat and back-up coat component are separately added into homogenizer by table 1 and mixed under 3000r/min rotating speeds
Stir 20min and obtain resinous coat lotion and back-up coat lotion, it is standby；
One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating
One layer of resinous coat, sprinkle and baking oven heating is put into after sand, at 240 DEG C, be incubated 19min, then one layer of back-up coat of dip-coating again, do
Shell is gone out from metal pattern after dry, finally shell is placed in roaster after 950 DEG C of roasting temperature 50min and obtains ultra-thin shell.
The sand is the quartz sand that specification purchased in market is 40*80 mesh, standby after 50 mesh and the choosing of 100 mesh sieves.
Ultra-thin shell is put into iron box container, shot is filled and quartz sand is fixed, and apply magnetic field around；
Metal melting batch mixing is poured into ultra-thin shell while hot, ground auger blank is obtained after cooling；
Blank is first quenched at 920 DEG C, be incubated oil cooling after 1.8h；Then temper is incubated 4.8h at 220 DEG C
Room temperature cools down afterwards；
Blank is immersed to zinc-plated in hot zinc liquid, acquisition pile punching ground auger.Weight shared by being added in described galvanizing flux
Measure the Nano diamond powder of percentage 1.5%.
Embodiment 5
Pile punching is stirred into consolute with the material of ground auger at a temperature of 1400 DEG C, obtains metal melting batch mixing；Described
Pile punching is with the material component and its percetage by weight of ground auger：C：0.3%th, Si：1.50%th, Mn：1%th, Cr：
1.50%th, Ni：0.1%th, Mo：0.1%, Al：0.08%th, P≤0.040%, S≤0.040%, remaining is iron.
Resinous coat and back-up coat component are separately added into homogenizer by table 1 and mixed under 3000r/min rotating speeds
Stir 20min and obtain resinous coat lotion and back-up coat lotion, it is standby；
One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating
One layer of resinous coat, sprinkle and baking oven heating is put into after sand, at 250 DEG C, be incubated 20min, then one layer of back-up coat of dip-coating again, do
Shell is gone out from metal pattern after dry, finally shell is placed in roaster after 1000 DEG C of roasting temperature 60min and obtains ultra-thin shell.
The sand is the quartz sand that specification purchased in market is 40*80 mesh, standby after 50 mesh and the choosing of 100 mesh sieves.
Ultra-thin shell is put into iron box container, shot is filled and quartz sand is fixed, and apply magnetic field around；
Metal melting batch mixing is poured into ultra-thin shell while hot, ground auger blank is obtained after cooling；
Blank is first quenched at 950 DEG C, be incubated oil cooling after 2h；Then temper is incubated 5h rear chambers at 250 DEG C
Temperature cooling；
Blank is immersed to zinc-plated in hot zinc liquid, acquisition pile punching ground auger.Weight shared by being added in described galvanizing flux
Measure the Nano diamond powder of percentage 2%.
Comparative example 1
It is with the difference of embodiment 1, using general waterglass fusible pattern legal system shell.
Comparative example 2
It is with the difference of embodiment 1, applies magnetic field when metal melting batch mixing is poured into ultra-thin shell while hot not around.
Comparative example 3
It is with the difference of embodiment 1, Nano diamond powder is added not in hot zinc liquid.
Comparative example 4
Hard alloy WC is used mainly to bore material, after general waterglass permanent mo(u)lding method casting, heat treatment, galvanizing
Obtain pile punching ground auger.
By the pile obtained in embodiment 1-5 and comparative example 1-4 punching land used drilling row performance test, test result such as table
Shown in 2.
Ground auger performance test data is used in the embodiment 1-5 of table 2 and the punching of comparative example 1-4 piles
As known from Table 1, pile punching of the present invention is used in ground auger waterglass model casting, using under the ultra-thin shell of making, magnetic field
Moulding by casting, effectively increase ground auger hardness, wearability, toughness.Compared with prior art, preparation technology of the present invention further controls
Material cost, aluminium alloy mould is repeatable to be utilized, and improves production efficiency.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (9)
- A kind of 1. pile punching ground auger, it is characterised in that described pile punching is formed with ground auger by waterglass model casting, Ultra-thin shell wherein in waterglass model casting includes thin wax layer, resinous coat, back-up coat successively from inside to outside.
- 2. pile punching ground auger according to claim 1, it is characterised in that the preparation method of the ultra-thin shell is included such as Lower step：One group of detachable helical structure metal pattern first is produced with aluminium alloy, internally sprays one layer of thin wax, then dip-coating one Layer resinous coat, baking oven heating is put into after sprinkling sand, at 200-250 DEG C, is incubated 15-20min, then one layer of reinforcing of dip-coating again Layer, shell is gone out from metal pattern after drying, shell is finally placed in 800-1000 DEG C of roasting temperature 30-60min in roaster After obtain ultra-thin shell.
- 3. pile punching ground auger according to claim 1 or 2, it is characterised in that described resinous coat includes：30- 50 parts by weight silica flours, 10-15 parts by weight organosilicon acrylic resin, 5-10 parts by weight waterglass, 50-60 parts by weight alcohol.
- 4. pile punching ground auger according to claim 1 or 2, it is characterised in that described back-up coat includes：30-40 Parts by weight silica flour, 10-15 parts by weight TiC, 10-20 parts by weight lignin, 5-10 parts by weight bauxite, 50-60 parts by weight water.
- 5. pile punching ground auger according to claim 2, it is characterised in that described sand is granularity 50-100 purposes Quartz sand.
- 6. a kind of preparation method of pile punching ground auger, it is characterised in that described preparation method comprises the following steps：S1, pile punching stirred into consolute with the material of ground auger at a temperature of 1300-1400 DEG C, obtain metal melting batch mixing；S2, ultra-thin shell is put into iron box container, fills shot and dry sand is fixed, and apply magnetic field around；S3, metal melting batch mixing is poured into the ultra-thin shell in S2 while hot, ground auger blank is obtained after cooling；S4, Quenching Treatment, temper are carried out to blank；S5, blank is immersed to zinc-plated in galvanizing flux, acquisition pile punching ground auger.
- 7. the preparation method of pile punching ground auger according to claim 6, it is characterised in that described Quenching Treatment is At 850-950 DEG C, oil cooling after 1-2h is incubated.
- 8. the preparation method of pile punching ground auger according to claim 6, it is characterised in that described temper is Room temperature cools down after being incubated 4-5h at 150-250 DEG C.
- 9. the preparation method of pile punching ground auger according to claim 6, it is characterised in that add in described galvanizing flux Enter shared percetage by weight 0.5-2% Nano diamond powder.
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| CN203390152U (en) * | 2013-06-08 | 2014-01-15 | 温州锐特铸造有限公司 | Novel valve investment composite shell mold |
| CN103831397A (en) * | 2014-03-27 | 2014-06-04 | 浙江宇达化工有限公司 | Shell making method of water glass through investment casting |
| CN104148582A (en) * | 2014-08-20 | 2014-11-19 | 无锡柯马机械有限公司 | Evaporative-pattern magnetic mold casting method |
| CN105414484A (en) * | 2015-11-24 | 2016-03-23 | 怀宁县群力汽车配件有限公司 | Fired mold precise casting technology for producing automobile H-shaped front shaft |
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| CN203390152U (en) * | 2013-06-08 | 2014-01-15 | 温州锐特铸造有限公司 | Novel valve investment composite shell mold |
| CN103350182A (en) * | 2013-06-25 | 2013-10-16 | 天长市天翔集团有限公司 | Novel composite hardening agent for water-glass investment casting |
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| CN103831397A (en) * | 2014-03-27 | 2014-06-04 | 浙江宇达化工有限公司 | Shell making method of water glass through investment casting |
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Effective date of registration: 20211215 Address after: 315000 Qiu Cun Zhen Cao Cun, Fenghua District, Ningbo City, Zhejiang Province Patentee after: Ningbo Fenghua Huawei Precision Casting Co.,Ltd. Address before: 315100 No. 2086, ningheng South Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO QIANHAO METAL PRODUCT Co.,Ltd. |