CN110180993A - The preparation method of special-shaped bent hole in a kind of metal - Google Patents
The preparation method of special-shaped bent hole in a kind of metal Download PDFInfo
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- CN110180993A CN110180993A CN201910446139.1A CN201910446139A CN110180993A CN 110180993 A CN110180993 A CN 110180993A CN 201910446139 A CN201910446139 A CN 201910446139A CN 110180993 A CN110180993 A CN 110180993A
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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
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
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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
- B22D27/18—Measures for using chemical processes for influencing the surface composition of castings, e.g. for increasing resistance to acid attack
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a kind of preparation methods of bent hole special-shaped in metal, step includes: 1) according to the abnormal shape section shape and size of bent hole required in metalwork and the trend in hole, shape processing, brake forming and cutting process are carried out to foamed plastics bar, then one layer of PVB rosin compound binding agent is equably smeared in its incision, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape；2) according to mass percent weighing following components: metal alloy powders, adhesive, adhesive, suspending agent, coupling agent, deionized water add up to 100%, and metal powder coating is made；3) metal-powder coating is coated, then is placed in insulating box and dries；4) pouring liquid metal obtains the metalwork of the special-shaped bent hole of surface alloying after cooled and solidified.It is of the invention that method is simple.
Description
Technical field
The invention belongs to casting technology field, it is related to a kind of preparation method of special-shaped bent hole in metal.
Background technique
Casting is that coagulation forming after liquid metal injection type chamber is obtained to the technology of metal casting, is to obtain engineering goods hair
One of Bear-grudge and the main method of components are widely used in the pillar industries such as Aeronautics and Astronautics, petrochemical industry, metallurgy, automobile and shipbuilding.Casting
It makes forming technique and occupies extremely important status in machine building industry, the application of various advanced foundry engieerings is to process industry
Bring new vitality.
Component of machine often requires processing hole in production application, carries out large quantities of metering-orifices to various parts at present
The most common method of processing is drilling, and process flow is generally drilling, reaming, fraising or bore hole.Drilling processing there is
Cutter is easy to damage, drilling when the problems such as chip removal is difficult, drilling quality is poor and drilling efficiency is low, drilling device is inconvenient.With
The high speed development of China's economy and science and technology so that irregularly-shaped hole is widely used, showing especially prominent is in automobile
In manufacturing engine piston.
Irregularly-shaped hole mainly includes the hole of elliptical aperture, square hole, hex hole, speaker hole and various irregular shapes, by
In the particularity of special-shaped pore structure, the complexity of its process is determined.For profiled holes and bent hole and irregular trend
Hole, the machine-tooled methods such as conventional borehole are difficult at present.And it laser machines, Electrolyzed Processing, electron beam process and electric spark
Though equal special processs method is capable of processing profiled holes, the hole to bent hole and irregularly moved towards, such as the intracorporal oil circuit of valve, gas circuit
Channel cannot achieve processing, be unable to satisfy the demand of modernization industry production, and this kind of inner hole is needed using casting method type core
(sand core) forms to prepare.To biggish, less complicated hole, cast out to be easier, but to smaller internal diameter, move towards complexity
Inner hole, after casting solidification, type core (sand core) is extremely difficult to be cleaned up, cause type core (sand core) stay in inside metalwork and no
To through-hole.Therefore a kind of operate conveniently and the processing method of special-shaped bent hole solves inside high-efficient component of machine is needed
The above problem.
Summary of the invention
The object of the present invention is to provide a kind of preparation methods of bent hole special-shaped in metal, solve the prior art using tradition
Drilling etc. machine-tooled methods component of machine inside abnormal shape bent hole is difficult to, especially to irregularly move towards bent hole without
The problem of method is processed.
The technical solution adopted by the present invention is that in a kind of metal special-shaped bent hole preparation method, have according to the following steps
Body is implemented:
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
According to the abnormal shape section shape and size of the bent hole and trend in hole required in metalwork, to foamed plastics bar into
Then row shape processing, brake forming and cutting process equably smear one layer of PVB rosin compound binding agent in its incision,
Each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape；
Step 2: preparing metal powder coating
According to mass percent weighing following components: metal alloy powders 30%~70%, adhesive Aluminum sol 1%~
10%, adhesive polyethylene alcohol formal 0.1%~1.0%, suspending agent sodium carboxymethylcellulose 0.1%~0.5%, coupling agent
Titanate esters 0.1%~1.0%, deionized water 20%~60% add up to 100%；
Above-mentioned metal alloy powders are mixed with Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, titanate esters
Deionized water dissolving is added after uniformly, glue is ground after stirring, and metal powder coating is made；
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed or is sprayed on the abnormity of foamed plastics made from step 1
Stick surface, then be placed in insulating box and dry；
Step 4: pouring liquid metal
Setting position and pouring liquid metal in foamed plastics profile bar merging casting mold after being dried in step 3, foam
Plastic shape stick decomposes volatilization gasification at high temperature, and the alloy powder on surface is seeped by diffusion, capillary and agglomeration casting
Casting abnormal shape bent hole inner wall obtains the metalwork of the special-shaped bent hole of surface alloying after cooled and solidified.
The invention has the advantages that including the following aspects:
1) preparation method of the invention, by carrying out preforming processing to foamed plastics bar and coating one layer on its surface
Foamed plastics profile bar is embedded in casting mold and casting of molten metal, foamed plastics decomposes volatilization gasification at high temperature by metal powder
It can be prepared by special-shaped bent hole in metal after cooled and solidified.To the intracorporal oil circuit of the bent hole irregularly moved towards such as valve, gas circuit etc.
Channel, only this method can process to obtain.The prior art is solved in machine-tooled methods such as use conventional boreholes to machinery
Special-shaped bent hole is difficult to inside components, and the problem of can not process to the bent hole irregularly moved towards.
2) preparation method of the invention prepares special-shaped bent hole in metal using foamed plastics profile bar in casting process,
Its foamed plastics profile bar surface can coat one layer of high alloy material powder, and alloy powder passes through surface after molten metal cooled and solidified
Alloying casting is seeped in casting abnormal shape bent hole inner wall, and surface peening can be played the role of, and improves metalwork surface property, is improved tired
Labor intensity, wearability and corrosion resistance increase surface strength and hardness, improve mantle micro structure.
3) preparation method of the invention can be made by carrying out shape processing to foamed plastic rod using the method for casting
Special-shaped bent hole in standby any shape and the metal arbitrarily moved towards, has the advantages that high-efficient and operational flexible.
4) preparation method of the invention, selected raw material sources are extensive, low in cost, preparation process is relatively simple, real
It is wide with range.
Specific embodiment
The present invention is described in detail With reference to embodiment.
The preparation method of special-shaped bent hole in metal of the present invention, is embodied according to the following steps:
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
According to the abnormal shape section shape and size of the bent hole and trend in hole required in metalwork, to foamed plastics bar into
Then row shape processing, brake forming and cutting process equably smear one layer of PVB rosin compound binding agent in its incision,
Each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.The wherein section shape of foamed plastics profile bar
Shape can for round, oval, rectangular, triangle, hexagon it is one such combine or other etc. arbitrary shapes.
Step 2: preparing metal powder coating
Weigh following components according to mass percent: metal alloy powders are (identical as the metalwork bulk component being poured
Or different high alloy powder) 30%~70%, adhesive Aluminum sol 1%~10%, adhesive polyethylene alcohol formal
0.1%~1.0%, suspending agent sodium carboxymethylcellulose 0.1%~0.5%, coupling agent titanate esters 0.1%~1.0%, deionization
Water 20%~60% adds up to 100%；
Above-mentioned metal alloy powders are mixed with Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, titanate esters
Deionized water dissolving is added after uniformly, metal powder coating is made in stirring 15~glue mill 1~3 time after sixty minutes.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed or is sprayed on the abnormity of foamed plastics made from step 1
Stick surface, then be placed in insulating box and dried 5~20 hours at 30~60 DEG C.
Step 4: pouring liquid metal
Setting position and pouring liquid metal in foamed plastics profile bar merging casting mold after being dried in step 3, foam
Plastic shape stick decomposes volatilization gasification at high temperature, and the alloy powder on surface is seeped by diffusion, capillary and agglomeration casting
Casting abnormal shape bent hole inner wall obtains the metalwork of the special-shaped bent hole of surface alloying after cooled and solidified.
Embodiment 1
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the triangular cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to bubble
Foam plastic rod carries out shape processing, brake forming and cutting process, then equably smears one layer of PVB rosin in its incision
Each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape by compound binding agent.
Step 2: preparing metal powder coating
Following components: W18Cr4V alloy powder 50%, adhesive Aluminum sol 5%, adhesive is weighed according to mass percent
Polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 1%, deionized water 42.5% are closed
Meter 100%；
By W18Cr4V alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent titanate esters
Deionized water dissolving is added after mixing, glue is ground 2 times after stirring 35 minutes, and metal powder coating is made.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 10 hours at 50 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
State cast steel 35CrSi, foamed plastic rod decompose volatilization gasification at high temperature, and the alloy powder on surface passes through diffusion, capillary and burning
The metalwork that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in knot effect casting.
Embodiment 2
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the square cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to foam
Plastic rod carries out shape processing, brake forming and cutting process, and it is multiple then equably to smear one layer of PVB rosin in its incision
Binder is closed, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.
Step 2: preparing metal powder coating
Following components: W6Mo5Cr4V2 alloy powder 60%, adhesive Aluminum sol 6%, glue is weighed according to mass percent
Stick polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 1%, deionized water
31.5%, add up to 100%；
By W6Mo5Cr4V2 alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent metatitanic acid
Deionized water dissolving is added in ester after mixing, and glue is ground 2 times after forty minutes for stirring, and metal powder coating is made.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably sprayed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 15 hours at 55 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
State cast steel ZG40Cr, foamed plastic rod decompose volatilization gasification at high temperature, and the alloy powder on surface passes through diffusion, capillary and burning
The metalwork that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in knot effect casting.
Embodiment 3
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the hexagonal cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to bubble
Foam plastic rod carries out shape processing, brake forming and cutting process, then equably smears one layer of PVB rosin in its incision
Each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape by compound binding agent.
Step 2: preparing metal powder coating
Following components: W18Cr4V alloy powder 55%, adhesive Aluminum sol 5%, adhesive is weighed according to mass percent
Polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 1%, deionized water 37.5% are closed
Meter 100%；
By W18Cr4V alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent titanate esters
Deionized water dissolving is added after mixing, glue, which is ground 2 times, after stirring 35 minutes can be prepared by metal powder coating.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 10 hours at 40 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
45 steel of state, foamed plastic rod decompose volatilization gasification at high temperature, and the alloy powder on surface passes through diffusion, capillary and agglomeration
The metalwork that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in casting.
Embodiment 4
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the elliptical shape in cross-section of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to bubble
Foam plastic rod carries out shape processing, brake forming and cutting process, then equably smears one layer of PVB rosin in its incision
Each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape by compound binding agent.
Step 2: preparing metal powder coating
Following components: W6Mo5Cr4V2 alloy powder 65%, adhesive Aluminum sol 5%, glue is weighed according to mass percent
Stick polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 1%, deionized water
27.5%, add up to 100%；
By W6Mo5Cr4V2 alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent metatitanic acid
Deionized water dissolving is added in ester after mixing, and glue, which is ground 3 times, after stirring 45 minutes can be prepared by metal powder coating.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably sprayed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 15 hours at 50 DEG C.
Step 4: pouring liquid metal
It will will be coated with setting position in the foamed plastics profile bar merging casting mold of alloy powder coating in step 3 and be poured
Liquid spheroidal graphite cast-iron QT700-2, foamed plastic rod decompose volatilization gasification at high temperature, the alloy powder on surface by diffusion,
The special-shaped bent hole that surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in capillary and agglomeration casting
Metalwork.
Embodiment 5
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the circular section shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to foam
Plastic rod carries out shape processing, brake forming and cutting process, and it is multiple then equably to smear one layer of PVB rosin in its incision
Binder is closed, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.
Step 2: preparing metal powder coating
Following components: W18Cr4V alloy powder 60%, adhesive Aluminum sol 8%, adhesive is weighed according to mass percent
Polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 0.5%, deionized water 30% are closed
Meter 100%；
By W18Cr4V alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent titanate esters
Deionized water dissolving is added after mixing, glue, which is ground 3 times, after stirring 50 minutes can be prepared by metal powder coating.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 13 hours at 55 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
35 steel of state, foamed plastic rod decompose volatilization gasification at high temperature, and the alloy powder on surface passes through diffusion, capillary and agglomeration
The metalwork that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in casting.
Embodiment 6
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the square cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to foam
Plastic rod carries out shape processing, brake forming and cutting process, and it is multiple then equably to smear one layer of PVB rosin in its incision
Binder is closed, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.
Step 2: preparing metal powder coating
Following components: W6Mo5Cr4V2 alloy powder 60%, adhesive Aluminum sol 5%, glue is weighed according to mass percent
Stick polyvinyl formal 0.5%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 0.5%, deionized water
33.5%, add up to 100%；
By W6Mo5Cr4V2 alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent metatitanic acid
Deionized water dissolving is added in ester after mixing, and glue, which is ground 3 times, after stirring 45 minutes can be prepared by metal powder coating.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably sprayed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 15 hours at 60 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
State cast steel ZG55MnSi, foamed plastic rod decompose volatilization gasification at high temperature, the alloy powder on surface by diffusion, capillary and
The metal that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in agglomeration casting
Part.
Embodiment 7
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the square cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to foam
Plastic rod carries out shape processing, brake forming and cutting process, and it is multiple then equably to smear one layer of PVB rosin in its incision
Binder is closed, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.
Step 2: preparing metal powder coating
Following components: W6Mo5Cr4V2 alloy powder 70%, adhesive Aluminum sol 1%, glue is weighed according to mass percent
Stick polyvinyl formal 0.1%, suspending agent sodium carboxymethylcellulose 0.1%, coupling agent titanate esters 0.1%, deionized water
28.5%, add up to 100%；
By W6Mo5Cr4V2 alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent metatitanic acid
Deionized water dissolving is added in ester after mixing, and glue is ground 3 times after sixty minutes for stirring, and metal powder coating is made.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably sprayed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 5 hours at 60 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
State cast steel ZG55MnSi, foamed plastic rod decompose volatilization gasification at high temperature, the alloy powder on surface by diffusion, capillary and
The metal that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in agglomeration casting
Part.
Embodiment 8
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
It is required according to the square cross-sectional shape of abnormal shape bent hole required in metalwork and size and the trend in hole etc. to foam
Plastic rod carries out shape processing, brake forming and cutting process, and it is multiple then equably to smear one layer of PVB rosin in its incision
Binder is closed, each section of foamed plastic rod bonding is spliced into and the required consistent bar of pass shape.
Step 2: preparing metal powder coating
Following components: W6Mo5Cr4V2 alloy powder 30%, adhesive Aluminum sol 10%, glue is weighed according to mass percent
Stick polyvinyl formal 1%, suspending agent sodium carboxymethylcellulose 0.5%, coupling agent titanate esters 1%, deionized water
57.5%, add up to 100%；
By W6Mo5Cr4V2 alloy powder and Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, coupling agent metatitanic acid
Deionized water dissolving is added in ester after mixing, and glue, which is ground 3 times, after stirring 45 minutes can be prepared by metal powder coating.
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably sprayed into foamed plastics profile bar table obtained in step 1
Face, then be placed in insulating box and dried 20 hours at 30 DEG C.
Step 4: pouring liquid metal
Setting position and potting syrup in the foamed plastics profile bar merging casting mold of alloy powder coating will be coated in step 3
State cast steel ZG55MnSi, foamed plastic rod decompose volatilization gasification at high temperature, the alloy powder on surface by diffusion, capillary and
The metal that the special-shaped bent hole of surface alloying is obtained after casting abnormal shape bent hole inner wall, cooled and solidified is seeped in agglomeration casting
Part.
Claims (4)
1. the preparation method of special-shaped bent hole in a kind of metal, it is characterised in that: be embodied according to the following steps:
Step 1: preparation and the consistent foamed plastics abnormal shape stick of required pass shape
According to the abnormal shape section shape and size of bent hole required in metalwork and the trend in hole, shape is carried out to foamed plastics bar
Shape processing, brake forming and cutting process, then equably smear one layer of PVB rosin compound binding agent in its incision, will be each
Section foamed plastic rod bonding is spliced into and the required consistent bar of pass shape；
Step 2: preparing metal powder coating
According to mass percent weighing following components: metal alloy powders 30%~70%, adhesive Aluminum sol 1%~10%,
Adhesive polyethylene alcohol formal 0.1%~1.0%, suspending agent sodium carboxymethylcellulose 0.1%~0.5%, coupling agent metatitanic acid
Ester 0.1%~1.0%, deionized water 20%~60% add up to 100%；
Above-mentioned metal alloy powders are uniformly mixed with Aluminum sol, polyvinyl formal, sodium carboxymethylcellulose, titanate esters
After deionized water dissolving is added, after stirring glue grind, be made metal powder coating；
Step 3: coating metal-powder coating
The metal powder coating prepared in step 2 is equably brushed or is sprayed on foamed plastics profile bar table made from step 1
Face, then be placed in insulating box and dry；
Step 4: pouring liquid metal
Setting position and pouring liquid metal in foamed plastics profile bar merging casting mold after being dried in step 3, foamed plastics
Profile bar decomposes volatilization gasification at high temperature, and the alloy powder on surface is seeped by diffusion, capillary and agglomeration casting in casting
Special-shaped bent hole inner wall obtains the metalwork of the special-shaped bent hole of surface alloying after cooled and solidified.
2. the preparation method of special-shaped bent hole in metal according to claim 1, it is characterised in that: the foamed plastics
The cross sectional shape of profile bar is round, oval, rectangular, triangle, hexagon is one such.
3. the preparation method of special-shaped bent hole in metal according to claim 1, it is characterised in that: in the step 3,
Stirring 15~60 minutes, then glue is ground 1~3 time.
4. the preparation method of special-shaped bent hole in metal according to claim 1, it is characterised in that: in the step 3,
It is dried 5~20 hours at 30~60 DEG C in insulating box.
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| CN102942887A (en) * | 2012-11-22 | 2013-02-27 | 西安工程大学 | Foamed plastic binder for lost form casting and method for preparing binder |
| CN104117629A (en) * | 2013-04-23 | 2014-10-29 | 重庆双腾机械制造有限公司 | Curve type oil-passage hole gear shell EPC (expandable pattern casting) mold |
| JP2016020617A (en) * | 2014-07-16 | 2016-02-04 | 未来工業株式会社 | Sleeve fixture and sleeve fixing structure |
| CN107497991A (en) * | 2017-08-21 | 2017-12-22 | 安徽省含山县兴建铸造厂 | A kind of heavy punch piece coating for dispellable mould casting |
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Application publication date: 20190830 |