CN105598389B - A kind of casting technique for the composite flange for sealing rain-proof - Google Patents
A kind of casting technique for the composite flange for sealing rain-proof Download PDFInfo
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- CN105598389B CN105598389B CN201610035107.9A CN201610035107A CN105598389B CN 105598389 B CN105598389 B CN 105598389B CN 201610035107 A CN201610035107 A CN 201610035107A CN 105598389 B CN105598389 B CN 105598389B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of casting technique for the composite flange for sealing rain-proof, the composite flange cast out includes the first flange and second flange of left and right docking, first flange includes first flange body and shield, at least four first fixing holes are evenly equipped with first flange body, also uniform at least four oil filler point on first flange body, the first projection and the first groove are also evenly equipped with respectively on the surface of first flange body；Second flange includes second flange body, uniform at least four second fixing hole on second flange body, and the second projection and the second groove are also evenly equipped with respectively on second flange body；The casting technique of the present invention is simple and easy, and casting cost is cheap, and the flange arrangement cast out is simple, is easy to lubricate during use, connectivity is strong, good airproof performance, and has the function that rain-proof, extends service life, reduces cost.
Description
Technical field
The present invention relates to a kind of casting technique, and in particular to a kind of casting technique for the composite flange for sealing rain-proof.
Background technology
With economic quick, sustainable development, the rapid growth of steel-casting yield has been promoted, and future produces high quality, height
Added value, and special substance and the large-scale steel-casting of performance will be Big Steel Castings as the new developing direction of cast steel industry, flange
One of typical parts of steel part, flange are called flange flange disk or bead, and flange is the part being connected with each other between pipe and pipe,
For the connection between pipe end, also have with the flange on equipment importation, for the connection between two equipment, such as reductor method
Orchid etc., flange connection or bump joint, refer to be used as one group of combined sealing structure by flange, pad and bolt three interconnection
Be detachably connected, pipe flange, which is meant, matches somebody with somebody effective flange in plumbing installation, with the inlet and outlet method that equipment is meant in equipment
Orchid, perforation on flange, bolt are close to two flanges, with pad sealing, flange point threaded connection flange, welded flange between flange
With clip flange, species is a lot, and the manufacture of flange can be produced using casting technique, and the flange cast out, which removes, to be ensured well
Outside surface quality and higher dimensional accuracy, it is necessary to ensure excellent mechanical property, to meet its work under severe conditions
Make demand, the requirement more and more higher to flange, and existing steel foundry, because production time is short, metallurgy attaches under-reserve, presses
The production of original technique tissue, it is difficult to ensure the production cycle, so workshop practical condition must be combined, develop it is a kind of newly
Flange casting technique, the flange of high quality can be prepared, to meet the requirement of work.
The content of the invention
The technical problems to be solved by the invention are the shortcomings that overcoming prior art, there is provided a kind of to seal the compound of rain-proof
The casting technique of flange, the casting technique is simple and easy, and casting cost is cheap, and the flange arrangement cast out is simple, during use just
In lubrication, connectivity is strong, good airproof performance, and has the function that rain-proof, extends service life, reduces cost.
In order to solve the above technical problems, the present invention provides a kind of casting technique for the composite flange for sealing rain-proof, casting
The composite flange gone out includes the first flange and second flange of left and right docking, wherein：
First flange includes first flange body and the shield that is arranged on first flange body, and shield is along first flange sheet
Body edge stretches out to be formed, and at least four first fixing holes are evenly equipped with first flange body, and the first fixing hole penetrates
One flange body, also uniform at least four oil filler point on first flange body, corresponding first fixing hole of an oil filler point, and
Oil filler point UNICOM vertical with the first fixing hole, the first projection and first recessed is also evenly equipped with the surface of first flange body respectively
Groove, it is spaced apart between the first projection, the first fixing hole and the first groove；
Second flange includes second flange body, and uniform at least four are adapted to the first fixing hole on second flange body
Second fixing hole, the second projection and the second groove, the second projection and the first groove phase are also evenly equipped with respectively on second flange body
Adaptation, the second groove are adapted with the first projection, are spaced apart between the second groove, the second fixing hole and the second projection, and the
The second groove, the second fixing hole and the second projection in two flange bodies is sequentially convex with first on first flange body respectively
The position of block, the first fixing hole and the first groove strictly corresponds to；
The composite flange casting technique specifically includes following steps：
(1) casting mold is made as Modeling Material using molding sand and core sand according to the size of first flange and second flange,
Before making casting mold, first the molding sand in Modeling Material is placed in baker and dried, coating one layer in mo(U)ld face after drying takes off
Mould agent；
Releasing agent is formed using talcum powder, water, silicone oil, vegetable oil allotment, according to the mass fraction specially talcum powder：20-
30 parts, water：10-20 parts, silicone oil：20-30 parts, vegetable oil：30-40 parts, releasing agent is then sprayed on mold cavity with spray gun
On surface, thickness 0.05-0.1mm；
Technique effect, the releasing agent high temperature resistant, at high temperature with good stability, good die wall adhesive ability,
Primarily to it is heat-insulated, protect mould not to be burnt, improve die life, secondly lubricate casting and contacting dies interface,
In favor of the demoulding；
(2) raw material of first flange and second flange are placed in well formula crucible electrical resistance furnace and carry out melting, during melting
Crucible is now preheated to kermesinus, while the raw material of first flange and second flange are placed on fire door preheating, when crucible temperature
When degree reaches 150-170 DEG C, the sprayed coating into crucible, preheated raw material are then added, in the protection of mixed gas
Under, it is warming up to 1000-1200 DEG C and is melted, after whole meltings obtain former material feed liquid, gentle agitation, then with drying
Carbon trichloride preparation carries out refining degasification, stands 8-10min, and perlite slag making is then dispensed in former material feed liquid to purify former material
Feed liquid simultaneously skims to obtain former material feed liquid at once, and former material material liquid component is specific as follows by mass percentage：
Zn：3-6%, Mo：1-1.5%, Ti：1-1.2%, N：0.02-0.03%, Cr：8-11%, Ni：3-6%, C：
0.01-0.03%, Mn：0.5-0.7%, Nb：0.3-0.6%, Cu：0.3-0.5%, W：0.5-0.7%, Si：0.8-1.0%,
P：0.025-0.030%, S：0.008-0.010%, rare earth element：0.3-0.5%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：5-8%, cerium：5-7%, scandium：5-8%, yttrium：3-
7%, samarium：10-13%, gadolinium：5-7%, praseodymium：6-7%, neodymium：11-15%, remaining is lanthanide series, and above each component sum is
100%；
The coating being sprayed in crucible includes following component by mass percentage：62% talcum powder, 5% waterglass,
30% water and 3% boric acid, above each component sum are 100%；Mixed gas in melting is specially 75% compression
Air, 24% carbon dioxide and 1% HFC-134a；
(3) casting is obtained in the casting mold that will be prepared in the implantation step (1) of the former material feed liquid quick and stable after smelting, poured
It is 800-900 DEG C, duration of pouring 9-15min to note temperature, after being poured, when casting is cooled to room temperature with casting mold, is taken out
Casting；
(4) 10-12h is dissolved at 540-560 DEG C to casting, at room temperature after water quenching, in 175-185 DEG C of artificial aging 8-10h；
(5) casting is heat-treated, concrete operations are：
A anneals：5-8min is incubated during by casting stove heat to 500-600 DEG C, then stove is cooled to 300-400 DEG C, then beats
The continuation slow cooling of blow-on door is come out of the stove to 200-250 DEG C is air-cooled to room temperature；
B is quenched：The slow stove heat of casting after being annealed in step a to 300-380 DEG C and is incubated 10-20min, again stove heat
Water spray casting fast cooling is used after to 450-500 DEG C；
C is tempered：Casting after will be quenched enters stove again at room temperature and stove heat is to being incubated 10-13min after 300-350 DEG C
After come out of the stove and be air-cooled to room temperature；
(6) surface sand-blasting cleaning, Ultrasonic NDT are carried out successively to the casting after heat treatment, detects qualified finally to enter
Storehouse.
The technical scheme that further limits of the present invention as：
In the casting technique of the composite flange of aforementioned seal rain-proof, former material material liquid component is specific such as by mass percentage
Under：
Zn：3%, Mo：1%, Ti：1%, N：0.02%, Cr：8%, Ni：3%, C：0.01%, Mn：0.5%, Nb：
0.3%, Cu：0.3%, W：0.5%, Si：0.8%, P：0.025%, S：0.008%, rare earth element：0.3%, remaining is Fe
And inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：5%, cerium：5%, scandium：5%, yttrium：3%, samarium：
10%, gadolinium：5%, praseodymium：6%, neodymium：11%, remaining is lanthanide series, and above each component sum is 100%.
In the casting technique of the composite flange of aforementioned seal rain-proof, former material material liquid component is specific such as by mass percentage
Under：
Zn：6%, Mo：1.5%, Ti：1.2%, N：0.03%, Cr：11%, Ni：6%, C：0.03%, Mn：0.7%,
Nb：0.6%, Cu：0.5%, W：0.7%, Si：1.0%, P：0.030%, S：0.010%, rare earth element：0.5%, remaining is
Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：8%, cerium：7%, scandium：8%, yttrium：7%, samarium：
13%, gadolinium：7%, praseodymium：7%, neodymium：15%, remaining is lanthanide series, and above each component sum is 100%.
In the casting technique of the composite flange of aforementioned seal rain-proof, former material material liquid component is specific such as by mass percentage
Under：
Zn：4%, Mo：1.2%, Ti：1.1%, N：0.025%, Cr：9%, Ni：5%, C：0.02%, Mn：0.6%,
Nb：0.4%, Cu：0.4%, W：0.6%, Si：0.9%, P：0.028%, S：0.009%, rare earth element：0.4%, remaining is
Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：7%, cerium：6%, scandium：7%, yttrium：5%, samarium：
12%, gadolinium：6%, praseodymium：7%, neodymium：13%, remaining is lanthanide series, and above each component sum is 100%.
In the casting technique of the composite flange of aforementioned seal rain-proof, the first flange and the tension of second flange cast out is strong
Degree is 425MPa, elongation 16.5%, Brinell hardness 127HB.
The beneficial effects of the invention are as follows：
The present invention composite flange be made up of first flange and second flange, left and right docking more can good fastenings,
First flange body is provided with shield simultaneously, can have the function of rain-proof after docking, avoid drenching rear corrosion, shortening makes
In the life-span, reduce cost.
On first flange body in the present invention and second flange body is provided with the first projection, the first groove, second convex
Block and the second groove, wherein the first projection is corresponding with the second groove, the second projection is corresponding with the first groove, in first flange and
After the docking of two flanges, after first passing through the first projection and the second groove, the docking and consolidate of the second projection and the first groove, then by consolidating
Determine hole bolt to be further fixedly connected, dual connection, strengthen the sealing stability of flange.
Also uniform at least four oil filler point on the first flange body of the present invention, corresponding one first fixation of an oil filler point
Hole, and oil filler point UNICOM vertical with the first fixing hole, beneficial in use because overlong time such as causes to get rusty the state, no
It is readily disassembled, lubricating oil is injected by oil filler point, is beneficial to dismantle, decreases friction during installation, damage is reduced, reduces into
This.
The of the invention strict temperature for control cast is 800-900 DEG C, pouring temperature it is too low or too high when, raw material
The noise of mechanical property is relatively low, and mechanical castings are poor, when its reason is probably that pouring temperature is too low, raw material melt and mould
Its rear temperature of tool peripheral contact is rapidly decreased to below liquidus curve, is caused before pressure is applied to raw material melt, mould
Arm periphery has formed thicker scull, and the effective pressure being applied on raw material melt is greatly lowered；On the other hand, pouring temperature
When low, the poor fluidity of molten metal, mold-filling capacity is poor, and hole easily occurs in cast-internal；The two aspects are all detrimental to cast
Part mechanical property；When pouring temperature is too high, raw material melt degree of oxidation in transfer process is big, and drift is in extrusion process
Easily there is melt splash, reduce casting quality；In addition, also can thermal center and the defects of shrinkage cavity shrinkage porosity in the middle part of casting；
In addition, needing to discharge big calorimetric before high-temperature metal melt crystallization, the supercooling effect that press belt comes is not enough to cause metal bath same
When be subcooled, alloy number of nuclei is few, and a small amount of nucleus for being advantageous to be initially formed is grown up, coarse grains, mechanical castings reduce,
The present invention pouring temperature, avoid both the drawbacks of, ensure that the mechanical property of casting, improve the quality of casting.
First the molding sand in Modeling Material is placed in baker when making casting mold with molding sand and is dried and is being dried
One layer of refractory material is coated on the surface of molding sand before, the yielding shape for influenceing casting mold of molding sand under high temperature when molding sand is dried
Shape, the humidity and can that coating refractory material can reduce molding sand in drying ensure that molding sand is indeformable, entered in original iron melt into casting mold
During row shaping, because the humidity reduction of molding sand reduces the generation of gas, and then reduce the generation of shaped article surface pores；
A small amount of copper is added in former material feed liquid, copper can improve quenching degree, simultaneously as adding copper, refine pearlite
With graphite, the thin section spoken parts in traditional operas of reduction, improvement big cross section structure sensitive properties；Product strength, hardness, tough is improved in mechanical property
Property；Wearability, the heat resistance agent corrosivity of product are improved in performance, meanwhile, improve the consistency of product；
Perlite is a kind of efficient deslagging agent, is uniformly dispensed behind the surface of iron liquid, and slightly agitation can be agglomerated into rapidly
The skull being easily isolated with metallic solution, pure iron liquid can be obtained after pulling down skull, reduces casting burning into sand, improves quality,
And the cost of perlite in itself is low, and it is not quick-fried during use do not splash, securely and reliably, be easy to use, perlite is to iron liquid without dirt
Dye, without infiltration, do not influence the mechanical performance of its chemical analysis and casting, smokeless free from dust and pernicious gas pollute in use, can
Environment purification, reach and carry out production strictly in line with rules and regulations；
Tempering, quenching, the heat treatment of annealing can improve the combination property of product i.e. with hardness outside also with necessarily
Toughness, the determination of heat treatment temperature should be tiny to obtain after quenching to obtain uniform and tiny austenite crystal as principle
Martensitic structure, growing up for austenite crystal is directly proportional to hardening heat, uses Water spray product fast cooling during quenching, and
Temper is carried out to product in time, stress caused by quenching can not only be eliminated, a number of tempering horse can also be obtained
Family name's body, it ensure that the high rigidity of product simultaneously and improve the toughness of product.
Brief description of the drawings
Fig. 1 is the structural representation of first flange in the composite flange of the invention for sealing rain-proof；
Fig. 2 is the structural representation of second flange in the composite flange of the invention for sealing rain-proof；
In figure：1- first flange bodies, 2- shields, the fixing holes of 3- first, 4- oil filler points, the projections of 5- first, 6- first are recessed
Groove, 7- second flange bodies, the fixing holes of 8- second, the projections of 9- second, the grooves of 10- second.
Embodiment
Embodiment 1
A kind of casting technique of the composite flange for sealing rain-proof that the present embodiment provides, structure as illustrated in fig. 1 and 2, are cast
The composite flange gone out includes the first flange and second flange of left and right docking, wherein：
First flange includes first flange body 1 and the shield 2 that is arranged on first flange body 1, and shield 2 is along the first method
The blue edge of body 1 stretches out to be formed, and at least four first fixing holes 3, the first fixing hole are evenly equipped with first flange body 1
3 penetrate first flange body 1, also uniform at least four oil filler point 4 on first flange body 1, and an oil filler point 4 is corresponding one
First fixing hole 3, and the vertical connection of 4 and first fixing hole of oil filler point 3, also it is evenly equipped with respectively on the surface of first flange body 1
First projection 5 and the first groove 6, it is spaced apart between the first projection 5, the first fixing hole 3 and the first groove 6；
Second flange includes second flange body 7, on second flange body 7 uniform at least four and first fixing hole 3 it is suitable
The second fixing hole 8 matched somebody with somebody, is also evenly equipped with the second projection 9 and the second groove 10 on second flange body 7 respectively, the second projection 9 with
First groove 6 is adapted, and the second groove 10 is adapted with the first projection 5, the second groove 10, the second fixing hole 8 and the second projection 9
Between be spaced apart, and the second groove 10, the second fixing hole 8 and the second projection 9 on second flange body 7 are sequentially respectively with
The position of the first projection 5, the first fixing hole 3 and the first groove 6 in one flange body 1 strictly corresponds to.
Embodiment 2
The present embodiment provides the casting technique for the composite flange that rain-proof is sealed in above-described embodiment 1, the composite algorithm cast out
Orchid, the composite flange casting technique specifically include following steps：
(1) casting mold is made as Modeling Material using molding sand and core sand according to the size of first flange and second flange,
Before making casting mold, first the molding sand in Modeling Material is placed in baker and dried, coating one layer in mo(U)ld face after drying takes off
Mould agent；
Releasing agent is formed using talcum powder, water, silicone oil, vegetable oil allotment, according to the mass fraction specially talcum powder：20
Part, water：10 parts, silicone oil：20 parts, vegetable oil：30 parts, then releasing agent is sprayed on mold cavity surface with spray gun, thickness
For 0.05mm；
(2) raw material of first flange and second flange are placed in well formula crucible electrical resistance furnace and carry out melting, during melting
Crucible is now preheated to kermesinus, while the raw material of first flange and second flange are placed on fire door preheating, when crucible temperature
When degree reaches 160 DEG C, the sprayed coating into crucible, preheated raw material are then added, under the protection of mixed gas, risen
Warm to 1100 DEG C are melted, after whole meltings obtain former material feed liquid, gentle agitation, then with dry carbon trichloride preparation
Carry out refining degasification, stand 8min, perlite slag making is then dispensed in former material feed liquid existed side by side with to purify former material feed liquid and skimmed at quarter
Former material feed liquid is obtained, former material material liquid component is specific as follows by mass percentage：
Zn：3%, Mo：1%, Ti：1%, N：0.02%, Cr：8%, Ni：3%, C：0.01%, Mn：0.5%, Nb：
0.3%, Cu：0.3%, W：0.5%, Si：0.8%, P：0.025%, S：0.008%, rare earth element：0.3%, remaining is Fe
And inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：5%, cerium：5%, scandium：5%, yttrium：3%, samarium：
10%, gadolinium：5%, praseodymium：6%, neodymium：11%, remaining is lanthanide series, and above each component sum is 100%；
The coating being sprayed in crucible includes following component by mass percentage：62% talcum powder, 5% waterglass,
30% water and 3% boric acid, above each component sum are 100%；Mixed gas in melting is specially 75% compression
Air, 24% carbon dioxide and 1% HFC-134a；
(3) casting is obtained in the casting mold that will be prepared in the implantation step (1) of the former material feed liquid quick and stable after smelting, poured
It is 850 DEG C, duration of pouring 15min to note temperature, after being poured, when casting is cooled to room temperature with casting mold, takes out casting；
(4) 12h is dissolved at 550 DEG C to casting, at room temperature after water quenching, in 180 DEG C of artificial aging 9h；
(5) casting is heat-treated, concrete operations are：
A anneals：6min is incubated during by casting stove heat to 550 DEG C, then stove is cooled to 350 DEG C, then turns on fire door continuation
Slow cooling is come out of the stove to 250 DEG C and is air-cooled to room temperature；
B is quenched：The slow stove heat of casting after being annealed in step a to 350 DEG C and is incubated 20min, stove heat is to 480 DEG C again
Water spray casting fast cooling is used afterwards；
C is tempered：Casting after will be quenched enters stove again at room temperature and stove heat is come out of the stove to after being incubated 13min after 320 DEG C
It is air-cooled to room temperature；
(6) surface sand-blasting cleaning, Ultrasonic NDT are carried out successively to the casting after heat treatment, detects qualified finally to enter
Storehouse.
Embodiment 3
The present embodiment provides the casting technique for the composite flange that rain-proof is sealed in above-described embodiment 1, the composite algorithm cast out
Orchid, the composite flange casting technique specifically include following steps：
(1) casting mold is made as Modeling Material using molding sand and core sand according to the size of first flange and second flange,
Before making casting mold, first the molding sand in Modeling Material is placed in baker and dried, coating one layer in mo(U)ld face after drying takes off
Mould agent；
Releasing agent is formed using talcum powder, water, silicone oil, vegetable oil allotment, according to the mass fraction specially talcum powder：30
Part, water：20 parts, silicone oil：30 parts, vegetable oil：40 parts, then releasing agent is sprayed on mold cavity surface with spray gun, thickness
For 0.1mm；
(2) raw material of first flange and second flange are placed in well formula crucible electrical resistance furnace and carry out melting, during melting
Crucible is now preheated to kermesinus, while the raw material of first flange and second flange are placed on fire door preheating, when crucible temperature
When degree reaches 170 DEG C, the sprayed coating into crucible, preheated raw material are then added, under the protection of mixed gas, risen
Warm to 1200 DEG C are melted, after whole meltings obtain former material feed liquid, gentle agitation, then with dry carbon trichloride preparation
Carry out refining degasification, stand 10min, perlite slag making is then dispensed in former material feed liquid existed side by side with to purify former material feed liquid and skimmed at quarter
Former material feed liquid is obtained, former material material liquid component is specific as follows by mass percentage：
Zn：6%, Mo：1.5%, Ti：1.2%, N：0.03%, Cr：11%, Ni：6%, C：0.03%, Mn：0.7%,
Nb：0.6%, Cu：0.5%, W：0.7%, Si：1.0%, P：0.030%, S：0.010%, rare earth element：0.5%, remaining is
Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：8%, cerium：7%, scandium：8%, yttrium：7%, samarium：
13%, gadolinium：7%, praseodymium：7%, neodymium：15%, remaining is lanthanide series, and above each component sum is 100%；
The coating being sprayed in crucible includes following component by mass percentage：62% talcum powder, 5% waterglass,
30% water and 3% boric acid, above each component sum are 100%；Mixed gas in melting is specially 75% compression
Air, 24% carbon dioxide and 1% HFC-134a；
(3) casting is obtained in the casting mold that will be prepared in the implantation step (1) of the former material feed liquid quick and stable after smelting, poured
It is 800 DEG C, duration of pouring 12min to note temperature, after being poured, when casting is cooled to room temperature with casting mold, takes out casting；
(4) 10h is dissolved at 560 DEG C to casting, at room temperature after water quenching, in 185 DEG C of artificial aging 8h；
(5) casting is heat-treated, concrete operations are：
A anneals：8min is incubated during by casting stove heat to 600 DEG C, then stove is cooled to 400 DEG C, then turns on fire door continuation
Slow cooling is come out of the stove to 200 DEG C and is air-cooled to room temperature；
B is quenched：The slow stove heat of casting after being annealed in step a to 300 DEG C and is incubated 10min, stove heat is to 450 DEG C again
Water spray casting fast cooling is used afterwards；
C is tempered：Casting after will be quenched enters stove again at room temperature and stove heat is come out of the stove to after being incubated 10min after 350 DEG C
It is air-cooled to room temperature；
(6) surface sand-blasting cleaning, Ultrasonic NDT are carried out successively to the casting after heat treatment, detects qualified finally to enter
Storehouse.
Embodiment 4
The present embodiment provides the casting technique for the composite flange that rain-proof is sealed in above-described embodiment 1, the composite algorithm cast out
Orchid, the composite flange casting technique specifically include following steps：
(1) casting mold is made as Modeling Material using molding sand and core sand according to the size of first flange and second flange,
Before making casting mold, first the molding sand in Modeling Material is placed in baker and dried, coating one layer in mo(U)ld face after drying takes off
Mould agent；
Releasing agent is formed using talcum powder, water, silicone oil, vegetable oil allotment, according to the mass fraction specially talcum powder：25
Part, water：15 parts, silicone oil：25 parts, vegetable oil：35 parts, then releasing agent is sprayed on mold cavity surface with spray gun, thickness
For 0.08mm；
(2) raw material of first flange and second flange are placed in well formula crucible electrical resistance furnace and carry out melting, during melting
Crucible is now preheated to kermesinus, while the raw material of first flange and second flange are placed on fire door preheating, when crucible temperature
When degree reaches 150 DEG C, the sprayed coating into crucible, preheated raw material are then added, under the protection of mixed gas, risen
Warm to 1000 DEG C are melted, after whole meltings obtain former material feed liquid, gentle agitation, then with dry carbon trichloride preparation
Carry out refining degasification, stand 9min, perlite slag making is then dispensed in former material feed liquid existed side by side with to purify former material feed liquid and skimmed at quarter
Former material feed liquid is obtained, former material material liquid component is specific as follows by mass percentage：
Zn：4%, Mo：1.2%, Ti：1.1%, N：0.025%, Cr：9%, Ni：5%, C：0.02%, Mn：0.6%,
Nb：0.4%, Cu：0.4%, W：0.6%, Si：0.9%, P：0.028%, S：0.009%, rare earth element：0.4%, remaining is
Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Lanthanum：7%, cerium：6%, scandium：7%, yttrium：5%, samarium：
12%, gadolinium：6%, praseodymium：7%, neodymium：13%, remaining is lanthanide series, and above each component sum is 100%；
The coating being sprayed in crucible includes following component by mass percentage：62% talcum powder, 5% waterglass,
30% water and 3% boric acid, above each component sum are 100%；Mixed gas in melting is specially 75% compression
Air, 24% carbon dioxide and 1% HFC-134a；
(3) casting is obtained in the casting mold that will be prepared in the implantation step (1) of the former material feed liquid quick and stable after smelting, poured
It is 900 DEG C, duration of pouring 9min to note temperature, after being poured, when casting is cooled to room temperature with casting mold, takes out casting；
(4) 11h is dissolved at 540 DEG C to casting, at room temperature after water quenching, in 175 DEG C of artificial aging 10h；
(5) casting is heat-treated, concrete operations are：
A anneals：5min is incubated during by casting stove heat to 500 DEG C, then stove is cooled to 300 DEG C, then turns on fire door continuation
Slow cooling is come out of the stove to 220 DEG C and is air-cooled to room temperature；
B is quenched：The slow stove heat of casting after being annealed in step a to 380 DEG C and is incubated 15min, stove heat is to 500 DEG C again
Water spray casting fast cooling is used afterwards；
C is tempered：Casting after will be quenched enters stove again at room temperature and stove heat is come out of the stove to after being incubated 12min after 300 DEG C
It is air-cooled to room temperature；
(6) surface sand-blasting cleaning, Ultrasonic NDT are carried out successively to the casting after heat treatment, detects qualified finally to enter
Storehouse.
The first flange and the tensile strength of second flange cast out in above-described embodiment 1-4 is 425MPa, elongation
For 16.5%, Brinell hardness 127HB.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical scheme, all fall within the protection domains of application claims.
Claims (5)
- A kind of 1. casting technique for the composite flange for sealing rain-proof, it is characterised in that：It is right that the composite flange cast out includes left and right The first flange and second flange connect, wherein：The first flange includes first flange body (1) and the shield (2) being arranged on first flange body (1), described Shield (2) stretches out to be formed along first flange body (1) edge, and at least four are evenly equipped with the first flange body (1) Individual first fixing hole (3), described the first fixing hole (3) penetrate first flange body (1), on the first flange body (1) Also uniform at least four oil filler point (4), corresponding first fixing hole (3) of oil filler point (4), and the oil filler point (4) with First fixing hole (3) vertical connection, the first projection (5) is also evenly equipped with respectively on the surface of the first flange body (1) With the first groove (6), it is spaced apart between described the first projection (5), the first fixing hole (3) and the first groove (6)；The second flange includes second flange body (7), uniform at least four and described the on the second flange body (7) The second fixing hole (8) of one fixing hole (3) adaptation, be also evenly equipped with respectively on the second flange body (7) the second projection (9) and Second groove (10), second projection (9) are adapted with first groove (6), second groove (10) and described the One projection (5) is adapted, and is spaced apart between described the second groove (10), the second fixing hole (8) and the second projection (9), and The second groove (10), the second fixing hole (8) and the second projection (9) on the second flange body (7) are sequentially respectively with first The position of the first projection (5), the first fixing hole (3) and the first groove (6) in flange body (1) strictly corresponds to；The composite flange casting technique specifically includes following steps：(1) casting mold is made as Modeling Material using molding sand and core sand according to the size of first flange and second flange, made Before casting mold, first the molding sand in Modeling Material is placed in baker and dried, one layer of releasing agent is coated in mo(U)ld face after drying；Described releasing agent is formed using talcum powder, water, silicone oil, vegetable oil allotment, according to the mass fraction specially talcum powder： 20-30 parts, water：10-20 parts, silicone oil：20-30 parts, vegetable oil：30-40 parts, releasing agent is then sprayed on mould type with spray gun On chamber surface, thickness 0.05-0.1mm；(2) raw material of first flange and second flange are placed in well formula crucible electrical resistance furnace and carry out melting, it is existing during melting will Crucible is preheated to kermesinus, while the raw material of first flange and second flange are placed on into fire door preheating, when crucible temperature arrives During up to 150-170 DEG C, the sprayed coating into crucible, preheated raw material are then added, under the protection of mixed gas, heating Melted to 1000-1200 DEG C, after whole meltings obtain former material feed liquid, gentle agitation, then with dry carbon trichloride Preparation carries out refining degasification, stands 8-10min, and perlite slag making is then dispensed in former material feed liquid is existed side by side with purifying former material feed liquid Skim at quarter to obtain former material feed liquid, former material material liquid component is specific as follows by mass percentage：Zn：3-6%, Mo：1-1.5%, Ti：1-1.2%, N：0.02-0.03%, Cr：8-11%, Ni：3-6%, C：0.01- 0.03%, Mn：0.5-0.7%, Nb：0.3-0.6%, Cu：0.3-0.5%, W：0.5-0.7%, Si：0.8-1.0%, P： 0.025-0.030%, S：0.008-0.010%, rare earth element：0.3-0.5%, remaining is Fe and inevitable impurity；Described rare earth element includes following components by mass percentage：Lanthanum：5-8%, cerium：5-7%, scandium：5-8%, yttrium：3- 7%, samarium：10-13%, gadolinium：5-7%, praseodymium：6-7%, neodymium：11-15%, remaining is other lanthanide series, above each component sum For 100%；The coating being sprayed in crucible includes following component by mass percentage：62% talcum powder, 5% waterglass, 30% Water and 3% boric acid, above each component sum be 100%；Mixed gas in melting is specially 75% compression sky Gas, 24% carbon dioxide and 1% HFC-134a；(3) casting, cast temperature are obtained in the casting mold that will be prepared in the implantation step (1) of the former material feed liquid quick and stable after smelting Spend for 800-900 DEG C, duration of pouring 9-15min, after being poured, when casting is cooled to room temperature with casting mold, take out casting；(4) 10-12h is dissolved at 540-560 DEG C to casting, at room temperature after water quenching, in 175-185 DEG C of artificial aging 8-10h；(5) casting is heat-treated, concrete operations are：A anneals：5-8min is incubated during by casting stove heat to 500-600 DEG C, then stove is cooled to 300-400 DEG C, then turns on stove Door continuation slow cooling is come out of the stove to 200-250 DEG C is air-cooled to room temperature；B is quenched：The slow stove heat of casting after being annealed in step a to 300-380 DEG C and is incubated 10-20min, stove heat is extremely again Water spray casting fast cooling is used after 450-500 DEG C；C is tempered：Casting after will be quenched enters stove again at room temperature and stove heat goes out to after being incubated 10-13min after 300-350 DEG C Stove is air-cooled to room temperature；(6) surface sand-blasting cleaning, Ultrasonic NDT are carried out successively to the casting after heat treatment, detects qualified final storage.
- 2. the casting technique of the composite flange of sealing rain-proof according to claim 1, it is characterised in that：By mass percentage It is specific as follows to count former material material liquid component：Zn：3%, Mo：1%, Ti：1%, N：0.02%, Cr：8%, Ni：3%, C：0.01%, Mn：0.5%, Nb：0.3%, Cu：0.3%, W：0.5%, Si：0.8%, P：0.025%, S：0.008%, rare earth element：0.3%, remaining is Fe and can not kept away The impurity exempted from；Described rare earth element includes following components by mass percentage：Lanthanum：5%, cerium：5%, scandium：5%, yttrium：3%, samarium： 10%, gadolinium：5%, praseodymium：6%, neodymium：11%, remaining is other lanthanide series, and above each component sum is 100%.
- 3. the casting technique of the composite flange of sealing rain-proof according to claim 1, it is characterised in that：By mass percentage It is specific as follows to count former material material liquid component：Zn：6%, Mo：1.5%, Ti：1.2%, N：0.03%, Cr：11%, Ni：6%, C：0.03%, Mn：0.7%, Nb： 0.6%, Cu：0.5%, W：0.7%, Si：1.0%, P：0.030%, S：0.010%, rare earth element：0.5%, remaining be Fe and Inevitable impurity；Described rare earth element includes following components by mass percentage：Lanthanum：8%, cerium：7%, scandium：8%, yttrium：7%, samarium： 13%, gadolinium：7%, praseodymium：7%, neodymium：15%, remaining is other lanthanide series, and above each component sum is 100%.
- 4. the casting technique of the composite flange of sealing rain-proof according to claim 1, it is characterised in that：By mass percentage It is specific as follows to count former material material liquid component：Zn：4%, Mo：1.2%, Ti：1.1%, N：0.025%, Cr：9%, Ni：5%, C：0.02%, Mn：0.6%, Nb： 0.4%, Cu：0.4%, W：0.6%, Si：0.9%, P：0.028%, S：0.009%, rare earth element：0.4%, remaining be Fe and Inevitable impurity；Described rare earth element includes following components by mass percentage：Lanthanum：7%, cerium：6%, scandium：7%, yttrium：5%, samarium： 12%, gadolinium：6%, praseodymium：7%, neodymium：13%, remaining is other lanthanide series, and above each component sum is 100%.
- 5. the casting technique of the composite flange of sealing rain-proof according to claim 1, it is characterised in that：First cast out The tensile strength of flange and second flange is 425MPa, elongation 16.5%, Brinell hardness 127HB.
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| CN106247058B (en) * | 2016-07-29 | 2018-08-31 | 盐城丰工机械有限公司 | A kind of multi-pipeline connecting flange |
| CN106756331A (en) * | 2016-12-14 | 2017-05-31 | 苏州纽东精密制造科技有限公司 | A kind of automotive hub and its processing method |
| CN106636964A (en) * | 2016-12-15 | 2017-05-10 | 苏州富艾姆工业设备有限公司 | Automobile frame and preparation process thereof |
| CN107084288A (en) * | 2017-04-27 | 2017-08-22 | 无锡市华尔泰机械制造有限公司 | A kind of 316L stainless steel materials flange and its forging technology |
| CN108060367A (en) * | 2017-12-16 | 2018-05-22 | 苏州胤宗智能科技有限公司 | A kind of moulding process of the high low parallel bar in open air |
| CN110556713B (en) * | 2018-06-01 | 2023-02-07 | 中国电力科学研究院有限公司 | Anti-seismic structure for pillar type electrical equipment |
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| CN101376163B (en) * | 2008-07-22 | 2011-03-23 | 繁昌县金贸铸造有限责任公司 | Technique for forming class form of flange bolt hole casting parts |
| CN101875090A (en) * | 2010-07-16 | 2010-11-03 | 吴江市液铸液压件铸造有限公司 | Flange casting production process |
| CN202791036U (en) * | 2012-09-13 | 2013-03-13 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | High-sealing-performance flange |
| CN202914932U (en) * | 2012-09-29 | 2013-05-01 | 徐州支点机电设备有限公司 | Conveniently maintained flange plate |
| CN202914921U (en) * | 2012-09-29 | 2013-05-01 | 徐州支点机电设备有限公司 | Corrosion-resistant and durable flange |
| CN203240156U (en) * | 2013-04-12 | 2013-10-16 | 上海威含德石油机械设备有限公司 | Hydraulic flange |
| CN204164541U (en) * | 2014-09-24 | 2015-02-18 | 安徽宏杰管道制造有限公司 | A kind of industrial flange plate |
| CN204628865U (en) * | 2015-02-10 | 2015-09-09 | 昆山市聚杨锻造有限公司 | Petroleum pipeline flange group |
| CN104791562B (en) * | 2015-03-30 | 2017-03-15 | 无锡市华尔泰机械制造有限公司 | The double mark stainless steel material flanges of F304/F304L and its production technology |
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