CN104879572B - A kind of spring support hanging frame fitting fastening and preparation method thereof - Google Patents
A kind of spring support hanging frame fitting fastening and preparation method thereof Download PDFInfo
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- CN104879572B CN104879572B CN201510314169.9A CN201510314169A CN104879572B CN 104879572 B CN104879572 B CN 104879572B CN 201510314169 A CN201510314169 A CN 201510314169A CN 104879572 B CN104879572 B CN 104879572B
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- pedestal
- support frame
- cooled
- strand
- stove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
- F16L3/133—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and hanging from a pendant
-
- 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
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Abstract
The invention discloses a kind of spring support hanging frame fitting fastening, including pedestal and support frame, support frame is symmetricly set on pedestal, support frame and pedestal formation U-shaped groove, and support frame on be provided with screwed hole, pedestal is rectangular structure, and pedestal corner is equipped with fixing hole, support frame surface is coated with zinc layers, wherein：Pedestal is made with support frame for identical material, makes the material of pedestal and support frame and includes following components：Cr, Mo, C, Co, Mn, P, S, Ni, Ti, W, V, Cu, Si, Nb, Ta, N, Mg, rare earth element, remaining is Fe and inevitable impurity；The present invention also designs a kind of preparation method of spring support hanging frame fitting fastening, and the preparation method is simple and easy to apply, and preparation process is pollution-free, prepares connector with low cost, to prepare, corrosion-resistant, wear-resisting, and intensity is high, good toughness, long service life.
Description
Technical field
The present invention relates to a kind of connector, and in particular to a kind of connector for using when being installed for spring support hanging frame and its
Preparation method.
Background technology
Spring support hanging frame is mainly used in power plant steam-water pipe or boiler plant, produces thermal walking and its equipment dress in operation
Put, in suspension and support installation, need to be fixedly connected between each part, in the past hung branch by the way of positioning welding
Each part is fixedly connected in frame, although this mode stationarity is very strong but can not be dismantled completely, it has not been convenient to repaired,
The interface of welding is perishable, aging, and service life is short, high cost, and security is poor during welding, wastes resource；Existing skill
The mode of welding has been abandoned in art, will be effectively connected between suspension and support using special connector, meanwhile, it is this
The long-term work security of connected mode mainly depends on the condition of work and stress with contact surface.
The connector that current suspension and support is applied in installing is particularly easy to corruption because long-time works under exposed environment
Erosion, easy to wear, insufficient strength, it may appear that the phenomenon such as crack, disconnection；Therefore, research and development are a kind of can overcome the spring of above skill defect
Suspension and support connector turns into those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
The technical problems to be solved by the invention are that the shortcoming for overcoming prior art is installed there is provided a kind of spring support hanging frame
With connector and preparation method thereof, the preparation method is simple and easy to apply, and preparation process is pollution-free, prepares with low cost, prepares
Connector, corrosion-resistant, wear-resisting, intensity is high, good toughness, long service life.
In order to solve the above technical problems, the present invention provides a kind of spring support hanging frame fitting fastening, including pedestal and
Support frame, support frame is symmetricly set on pedestal, support frame and pedestal formation U-shaped groove, and support frame on be provided with screwed hole,
Pedestal is rectangular structure, and pedestal corner is equipped with fixing hole, and support frame surface is coated with zinc layers, wherein：
Pedestal is made with support frame for identical material, and the material for making pedestal and support frame is wrapped by mass percentage
Include following components：
Cr:1-3%, Mo：0.8-1.0%, C：0.02-0.04%, Co：0.02-0.05%, Mn：0.5-0.8%, P：0.025-
0.030%, S：0.01-0.03%, Ni：0.5-0.6%, Ti：0.03-0.05%, W：0.2-0.4%, V：0.05-0.08%, Cu：
0.2-0.4%, Si：0.2-0.8%, Nb：0.03-0.05%, Ta：0.02-0.06%, N：0.01-0.02%, Mg：0.02-0.04%,
Rare earth element：0.15-0.18%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：5-8%, bait：6-8%, lanthanum：5-8%, terbium：3-7%,
Dysprosium：13-15%, lutetium：10-12%, ytterbium：8-10%, cerium：7-11%, neodymium：5-8%, praseodymium：3-5%, surplus is lanthanide series, above each group
/ and be 100%.
The technical scheme that further limits of the present invention as：
In foregoing spring support hanging frame fitting fastening, make the material of pedestal and support frame includes by mass percentage
Following components：
Cr:1%, Mo：0.8%, C：0.04%, Co：0.02%, Mn：0.8%, P：0.030%, S：0.03%, Ni：0.6%, Ti：
0.04%, W：0.2%, V：0.08%, Cu：0.4%, Si：0.8%, Nb：0.05%, Ta：0.02%, N：0.02%, Mg：0.03%, it is dilute
Earth elements：0.15%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：8%, bait：6%, lanthanum：5%, terbium：7%, dysprosium：14%,
Lutetium：12%, ytterbium：8%, cerium：11%, neodymium：8, praseodymium：3%, surplus is lanthanide series, and above each component sum is 100%.
In foregoing spring support hanging frame fitting fastening, make the material of pedestal and support frame includes by mass percentage
Following components：
Cr:2%, Mo：0.9%, C：0.02%, Co：0.04%, Mn：0.5%, P：0.028%, S：0.01%, Ni：0.5%, Ti：
0.03%, W：0.3%, V：0.06%, Cu：0.3%, Si：0.5%, Nb：0.03%, Ta：0.04%, N：0.01%, Mg：0.04%, it is dilute
Earth elements：0.18%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：6%, bait：8%, lanthanum：8%, terbium：5%, dysprosium：15%,
Lutetium：10%, ytterbium：9%, cerium：7%, neodymium：5%, praseodymium：4%, surplus is lanthanide series, and above each component sum is 100%.
In foregoing spring support hanging frame fitting fastening, make the material of pedestal and support frame includes by mass percentage
Following components：
Cr:3%, Mo：1.0%, C：0.03%, Co：0.05%, Mn：0.6%, P：0.025%, S：0.02%, Ni：0.55%, Ti：
0.05%, W：0.4%, V：0.05%, Cu：0.2%, Si：0.2%, Nb：0.04%, Ta：0.06%, N：0.015%, Mg：0.02%, it is dilute
Earth elements：0.17%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：5%, bait：7, lanthanum：7%, terbium：3%, dysprosium：13%, lutetium：
11%, ytterbium：10%, cerium：8%, neodymium：7%, praseodymium：5%, surplus is lanthanide series, and above each component sum is 100%.
The present invention have also been devised a kind of spring support hanging frame fitting fastening preparation method, the preparation method tool of the connector
Gymnastics conduct：
（1）Respectively according to pedestal and support frame be shaped as treat according to casting mold is made as Modeling Material using molding sand and core sand
With, make casting mold before, first the molding sand in Modeling Material is placed in baker and dried；
（2）The making material of pedestal and support frame is delivered into electric arc furnaces, and slightly refining causes the fusing of original material each component and aoxidized,
The temperature slightly refined is 1000-1250 DEG C, and the thick refining time is 1-3h, is then re-fed into LF refining furnace and is refined and deaerated work,
And progressive is smelted, smelting temperature is 1500-1650 DEG C, and the duration of heat is 1-3h, obtains casting liquid；
（3）The stable implantation step of liquid will be cast（1）In in ready casting mold, pouring temperature is 1400-1550 DEG C, is poured
Note speed is 40-48kg/s, and the duration of pouring is 15-25s, respectively obtains the strand of pedestal and support frame；
（4）Obtained casting billet surface is cleared up with stainless steel brush or emery wheel, the mixed of nitric acid and hydrofluoric acid is then immersed in
Pickling in solution is closed, is finally rinsed well, the strand after cleaning is heat-treated with clear water after drying, concrete operations are heat-treated
For：
A anneals：Strand stove heat to 1000-1200 DEG C and is incubated blowing out after 3-4h, and stove is cooled to 500-650 DEG C, with
Opening fire door continuation slow cooling is come out of the stove to 300-420 DEG C afterwards is air-cooled to room temperature；
B is quenched：After being annealed in step a strand slow stove heat is to 600-650 DEG C and is incubated 50-60min, stove heat again
Water spray strand fast cooling is used after to 500-550 DEG C；
C is tempered：Strand after will be quenched to enter after insulation 1-2h go out after stove and hot to 300-320 DEG C of stove at room temperature again
Stove is air-cooled to room temperature；
（5）By the quick sensing heating of strand after heat treatment to 750-800 DEG C, then room temperature is cooled to through refrigerating work procedure；
Refrigerating work procedure concrete operations are：Combined using water-cooled with air cooling, first use water-cooled to be incited somebody to action with 1-3 DEG C/s cooldown rate
Then strand water-cooled is air-cooled to 250-320 DEG C to 400-450 DEG C, then uses water-cooled with 3-4 DEG C/s cooldown rate by strand water
It is cooled to 100-150 DEG C, is finally air-cooled to room temperature；
（6）Zinc layers are plated to casting billet surface and obtain semi-finished product, room temperature is subsequently cooled to, ultrasonic wave then is carried out to semi-finished product
Detection, detects that qualified is pedestal and support frame finished product, and support frame and pedestal are welded to connect into fixation obtain spring branch and hang
Frame fitting fastening.
The beneficial effects of the invention are as follows：
The present invention is dried when making casting mold to molding sand, can reduce the polishing workload in later stage, reduces later stage soldering
Workload, the pulling force in reduction casting process between cold-hot-cast liquid, it is to avoid organization internal is loose while to reduce cast(ing) surface thin
Micro- stomata is produced.
The combination property that the present invention carries out heat treatment raising product to strand is to have also to have certain toughness outside hardness,
The determination of heat treatment temperature should be to obtain uniform and tiny austenite crystal as principle, to obtain tiny geneva after quenching
Body tissue, being grown up for austenite crystal be directly proportional to hardening heat, is carried out temper to product in time after quenching, can not only be disappeared
The stress produced during except quenching, can also obtain a number of tempered martensite, it is ensured that the high rigidity of product is carried again simultaneously
The high toughness of product.
Contain micro N, C micro in the present invention N, C, O in the present invention as interstitial elements such as one kind, they can be carried
The intensity of high casting, can substantially refine and strengthen martensite, N is in heat treatment process so that protected while casting is strengthened
Preferable plasticity is held.
The casting billet surface of the present invention is cleared up with stainless steel brush or emery wheel, and the mixing for being then immersed in nitric acid and hydrofluoric acid is molten
Pickling in liquid, finally rinsed well with clear water can remove hot rolling oxide skin can improve the high-temperature oxidation resistance of casting, hardness with
And friction and wear behavior.
Brief description of the drawings
Fig. 1 is the structural representation that spring support hanging frame fitting fastening of the present invention is used；
In figure：1- pedestals, 2- support frames, 3- screwed holes, 4- fixing holes.
Embodiment
Embodiment 1
A kind of spring support hanging frame fitting fastening that the present embodiment is provided, structure are as shown in figure 1, including pedestal 1 and branch
Support 2, support frame 2 is symmetricly set on pedestal 1, and support frame 2 on pedestal 1 formation U-shaped groove, and support frame 2 with being provided with screw thread
Hole 3, pedestal 1 is rectangular structure, and 1 four jiaos of pedestal is equipped with fixing hole 4, and the surface of support frame 2 is coated with zinc layers, wherein：
Pedestal 1 is made with support frame 2 for identical material, and the material of making pedestal 1 and support frame 2 is by mass percentage
Meter includes following components：
Cr:1%, Mo：0.8%, C：0.04%, Co：0.02%, Mn：0.8%, P：0.030%, S：0.03%, Ni：0.6%, Ti：
0.04%, W：0.2%, V：0.08%, Cu：0.4%, Si：0.8%, Nb：0.05%, Ta：0.02%, N：0.02%, Mg：0.03%, it is dilute
Earth elements：0.15%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：8%, bait：6%, lanthanum：5%, terbium：7%, dysprosium：14%,
Lutetium：12%, ytterbium：8%, cerium：11%, neodymium：8, praseodymium：3%, surplus is lanthanide series, and above each component sum is 100%.
Above-mentioned spring support hanging frame fitting fastening preparation method, the preparation method concrete operations of the connector are：
（1）Respectively according to pedestal and support frame be shaped as treat according to casting mold is made as Modeling Material using molding sand and core sand
With, make casting mold before, first the molding sand in Modeling Material is placed in baker and dried；
（2）The making material of pedestal and support frame is delivered into electric arc furnaces, and slightly refining causes the fusing of original material each component and aoxidized,
The temperature slightly refined is 1000 DEG C, and the thick refining time is 2h, is then re-fed into LF refining furnace and is refined and deaerated work, and progressive
Smelt, smelting temperature is 1650 DEG C, and the duration of heat is 1h, obtain casting liquid；
（3）The stable implantation step of liquid will be cast（1）In in ready casting mold, pouring temperature is 1550 DEG C, cast speed
Spend for 45kg/s, the duration of pouring is 25s, respectively obtains the strand of pedestal and support frame；
（4）Obtained casting billet surface is cleared up with stainless steel brush or emery wheel, the mixed of nitric acid and hydrofluoric acid is then immersed in
Pickling in solution is closed, is finally rinsed well, the strand after cleaning is heat-treated with clear water after drying, concrete operations are heat-treated
For：
A anneals：Strand stove heat to 1100 DEG C and is incubated blowing out after 3h, and stove is cooled to 650 DEG C, then turn on fire door after
Continuous slow cooling is come out of the stove to 300 DEG C is air-cooled to room temperature；
B is quenched：After being annealed in step a strand slow stove heat is to 600 DEG C and is incubated 55min, stove heat is to 500 DEG C again
Water spray strand fast cooling is used afterwards；
C is tempered：Strand after will be quenched enters air cooling of being come out of the stove after stove and hot to 320 DEG C of stove after insulation 1h again at room temperature
To room temperature；
（5）By the quick sensing heating of strand after heat treatment to 780 DEG C, then room temperature is cooled to through refrigerating work procedure；
Refrigerating work procedure concrete operations are：Combined using water-cooled with air cooling, first use water-cooled to be cast with 1 DEG C/s cooldown rate
Then base water-cooled is air-cooled to 320 DEG C to 420 DEG C, then use water-cooled with 4 DEG C/s cooldown rate by strand water-cooled to 100 DEG C, most
After be air-cooled to room temperature；
（6）Zinc layers are plated to casting billet surface and obtain semi-finished product, room temperature is subsequently cooled to, ultrasonic wave then is carried out to semi-finished product
Detection, detects that qualified is pedestal and support frame finished product, and support frame and pedestal are welded to connect into fixation obtain spring branch and hang
Frame fitting fastening.
Embodiment 2
A kind of spring support hanging frame fitting fastening that the present embodiment is provided, structure are as shown in figure 1, including pedestal 1 and branch
Support 2, support frame 2 is symmetricly set on pedestal 1, and support frame 2 on pedestal 1 formation U-shaped groove, and support frame 2 with being provided with screw thread
Hole 3, pedestal 1 is rectangular structure, and 1 four jiaos of pedestal is equipped with fixing hole 4, and the surface of support frame 2 is coated with zinc layers, wherein：
Pedestal 1 is made with support frame 2 for identical material, and the material of making pedestal 1 and support frame 2 is by mass percentage
Meter includes following components：
Cr:2%, Mo：0.9%, C：0.02%, Co：0.04%, Mn：0.5%, P：0.028%, S：0.01%, Ni：0.5%, Ti：
0.03%, W：0.3%, V：0.06%, Cu：0.3%, Si：0.5%, Nb：0.03%, Ta：0.04%, N：0.01%, Mg：0.04%, it is dilute
Earth elements：0.18%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：6%, bait：8%, lanthanum：8%, terbium：5%, dysprosium：15%,
Lutetium：10%, ytterbium：9%, cerium：7%, neodymium：5%, praseodymium：4%, surplus is lanthanide series, and above each component sum is 100%.
Above-mentioned spring support hanging frame fitting fastening preparation method, the preparation method concrete operations of the connector are：
（1）Respectively according to pedestal and support frame be shaped as treat according to casting mold is made as Modeling Material using molding sand and core sand
With, make casting mold before, first the molding sand in Modeling Material is placed in baker and dried；
（2）The making material of pedestal and support frame is delivered into electric arc furnaces, and slightly refining causes the fusing of original material each component and aoxidized,
The temperature slightly refined is 1250 DEG C, and the thick refining time is 1h, is then re-fed into LF refining furnace and is refined and deaerated work, and progressive
Smelt, smelting temperature is 1500 DEG C, and the duration of heat is 2h, obtain casting liquid；
（3）The stable implantation step of liquid will be cast（1）In in ready casting mold, pouring temperature is 1400 DEG C, cast speed
Spend for 48kg/s, the duration of pouring is 15s, respectively obtains the strand of pedestal and support frame；
（4）Obtained casting billet surface is cleared up with stainless steel brush or emery wheel, the mixed of nitric acid and hydrofluoric acid is then immersed in
Pickling in solution is closed, is finally rinsed well, the strand after cleaning is heat-treated with clear water after drying, concrete operations are heat-treated
For：
A anneals：Strand stove heat to 1000 DEG C and is incubated blowing out after 4h, and stove is cooled to 500 DEG C, then turn on fire door after
Continuous slow cooling is come out of the stove to 420 DEG C is air-cooled to room temperature；
B is quenched：After being annealed in step a strand slow stove heat is to 650 DEG C and is incubated 50min, stove heat is to 550 DEG C again
Water spray strand fast cooling is used afterwards；
C is tempered：Strand after will be quenched enters air cooling of being come out of the stove after stove and hot to 300 DEG C of stove after insulation 2h again at room temperature
To room temperature；
（5）By the quick sensing heating of strand after heat treatment to 750 DEG C, then room temperature is cooled to through refrigerating work procedure；
Refrigerating work procedure concrete operations are：Combined using water-cooled with air cooling, first use water-cooled to be cast with 3 DEG C/s cooldown rate
Then base water-cooled is air-cooled to 250 DEG C to 400 DEG C, then use water-cooled with 3 DEG C/s cooldown rate by strand water-cooled to 150 DEG C, most
After be air-cooled to room temperature；
（6）Zinc layers are plated to casting billet surface and obtain semi-finished product, room temperature is subsequently cooled to, ultrasonic wave then is carried out to semi-finished product
Detection, detects that qualified is pedestal and support frame finished product, and support frame and pedestal are welded to connect into fixation obtain spring branch and hang
Frame fitting fastening.
Embodiment 3
A kind of spring support hanging frame fitting fastening that the present embodiment is provided, structure are as shown in figure 1, including pedestal 1 and branch
Support 2, support frame 2 is symmetricly set on pedestal 1, and support frame 2 on pedestal 1 formation U-shaped groove, and support frame 2 with being provided with screw thread
Hole 3, pedestal 1 is rectangular structure, and 1 four jiaos of pedestal is equipped with fixing hole 4, and the surface of support frame 2 is coated with zinc layers, wherein：
Pedestal 1 is made with support frame 2 for identical material, and the material of making pedestal 1 and support frame 2 is by mass percentage
Meter includes following components：
Cr:3%, Mo：1.0%, C：0.03%, Co：0.05%, Mn：0.6%, P：0.025%, S：0.02%, Ni：0.55%, Ti：
0.05%, W：0.4%, V：0.05%, Cu：0.2%, Si：0.2%, Nb：0.04%, Ta：0.06%, N：0.015%, Mg：0.02%, it is dilute
Earth elements：0.17%, remaining is Fe and inevitable impurity；
Rare earth element includes following components by mass percentage：Samarium：5%, bait：7%, lanthanum：7%, terbium：3%, dysprosium：13%,
Lutetium：11%, ytterbium：10%, cerium：8%, neodymium：7%, praseodymium：5%, surplus is lanthanide series, and above each component sum is 100%.
Above-mentioned spring support hanging frame fitting fastening preparation method, the preparation method concrete operations of the connector are：
（1）Respectively according to pedestal and support frame be shaped as treat according to casting mold is made as Modeling Material using molding sand and core sand
With, make casting mold before, first the molding sand in Modeling Material is placed in baker and dried；
（2）The making material of pedestal and support frame is delivered into electric arc furnaces, and slightly refining causes the fusing of original material each component and aoxidized,
The temperature slightly refined is 1105 DEG C, and the thick refining time is 3h, is then re-fed into LF refining furnace and is refined and deaerated work, and progressive
Smelt, smelting temperature is 1580 DEG C, and the duration of heat is 3h, obtain casting liquid；
（3）The stable implantation step of liquid will be cast（1）In in ready casting mold, pouring temperature is 1500 DEG C, cast speed
Spend for 40kg/s, the duration of pouring is 20s, respectively obtains the strand of pedestal and support frame；
（4）Obtained casting billet surface is cleared up with stainless steel brush or emery wheel, the mixed of nitric acid and hydrofluoric acid is then immersed in
Pickling in solution is closed, is finally rinsed well, the strand after cleaning is heat-treated with clear water after drying, concrete operations are heat-treated
For：
A anneals：Strand stove heat to 1200 DEG C and is incubated blowing out after 3h, and stove is cooled to 600 DEG C, then turn on fire door after
Continuous slow cooling is come out of the stove to 400 DEG C is air-cooled to room temperature；
B is quenched：After being annealed in step a strand slow stove heat is to 620 DEG C and is incubated 60min, stove heat is to 520 DEG C again
Water spray strand fast cooling is used afterwards；
C is tempered：Strand after will be quenched enters air cooling of being come out of the stove after stove and hot to 310 DEG C of stove after insulation 1h again at room temperature
To room temperature；
（5）By the quick sensing heating of strand after heat treatment to 765 DEG C, then room temperature is cooled to through refrigerating work procedure；
Refrigerating work procedure concrete operations are：Combined using water-cooled with air cooling, first use water-cooled to be cast with 2 DEG C/s cooldown rate
Then base water-cooled is air-cooled to 290 DEG C to 400 DEG C, then use water-cooled with 3 DEG C/s cooldown rate by strand water-cooled to 120 DEG C, most
After be air-cooled to room temperature；
（6）Zinc layers are plated to casting billet surface and obtain semi-finished product, room temperature is subsequently cooled to, ultrasonic wave then is carried out to semi-finished product
Detection, detects that qualified is pedestal and support frame finished product, and support frame and pedestal are welded to connect into fixation obtain spring branch and hang
Frame fitting fastening.
In addition to the implementation, the present invention can also have other embodiment.All use equivalent or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (4)
1. a kind of preparation method of spring support hanging frame fitting fastening, the connector includes pedestal (1) and support frame (2), institute
The support frame (2) stated is symmetricly set on described pedestal (1), support frame as described above (2) and the pedestal (1) formation U-shaped groove,
And screwed hole (3) is provided with described support frame (2), the pedestal (1) is rectangular structure, and pedestal (1) corner is all provided with
There is fixing hole (4), support frame as described above (2) surface is coated with zinc layers, wherein：
The pedestal (1) is made with support frame (2) for identical material, makes the pedestal (1) and the material of support frame (2)
Include following components by mass percentage：
Cr:1-3%, Mo：0.8-1.0%, C：0.02-0.04%, Co：0.02-0.05%, Mn：0.5-0.8%, P：0.025-
0.030%, S：0.01-0.03%, Ni：0.5-0.6%, Ti：0.03-0.05%, W：0.2-0.4%, V：0.05-0.08%,
Cu：0.2-0.4%, Si：0.2-0.8%, Nb：0.03-0.05%, Ta：0.02-0.06%, N：0.01-0.02%, Mg：
0.02-0.04%, rare earth element：0.15-0.18%, remaining is Fe and inevitable impurity；
Described rare earth element includes following components by mass percentage：Samarium：5-8%, bait：6-8%, lanthanum：5-8%, terbium：3-
7%, dysprosium：13-15%, lutetium：10-12%, ytterbium：8-10%, cerium：7-11%, neodymium：5-8%, praseodymium：3-5%, surplus is group of the lanthanides member
Element, above each component sum is 100%, it is characterised in that：The preparation method concrete operations of the connector are：
(1) respectively according to pedestal and support frame be shaped as it is stand-by according to casting mold is made by Modeling Material of molding sand and core sand,
Make before casting mold, first the molding sand in Modeling Material is placed in baker and dried；
(2) the making material of pedestal and support frame is delivered to electric arc furnaces and slightly refined and cause the fusing of original material each component and oxidation, it is thick to refine
Temperature be 1000-1250 DEG C, the thick refining time is 1-3h, is then re-fed into LF refining furnace and is refined and deaerated work, is gone forward side by side
Row is smelted, and smelting temperature is 1500-1650 DEG C, and the duration of heat is 1-3h, obtains casting liquid；
(3) it will cast in the stable implantation step of liquid (1) in ready casting mold, pouring temperature is 1400-1550 DEG C, cast speed
Spend for 40-48kg/s, the duration of pouring is 15-25s, respectively obtains the strand of pedestal and support frame；
(4) obtained casting billet surface is cleared up with stainless steel brush or emery wheel, the mixing for being then immersed in nitric acid and hydrofluoric acid is molten
Pickling in liquid, is finally rinsed well with clear water, and the strand after cleaning is heat-treated after drying, the heat treatment concrete operations
For：
A anneals：Strand stove heat to 1000-1200 DEG C and is incubated blowing out after 3-4h, and stove is cooled to 500-650 DEG C, then beats
Blow-on door continuation slow cooling is come out of the stove to 300-420 DEG C is air-cooled to room temperature；
B is quenched：After being annealed in step a strand slow stove heat is to 600-650 DEG C and is incubated 50-60min, stove heat is extremely again
Water spray strand fast cooling is used after 500-550 DEG C；
C is tempered：Strand after will be quenched enters sky of being come out of the stove after stove and hot to 300-320 DEG C of stove after insulation 1-2h again at room temperature
It is cooled to room temperature；
(5) then the quick sensing heating of strand after heat treatment is cooled to room temperature to 750-800 DEG C through refrigerating work procedure；
Described refrigerating work procedure concrete operations are：Combined using water-cooled with air cooling, first use water-cooled with 1-3 DEG C/s cooldown rate
By strand water-cooled to 400-450 DEG C, 250-320 DEG C is then air-cooled to, then use water-cooled with 3-4 DEG C/s cooldown rate by strand
Water-cooled is finally air-cooled to room temperature to 100-150 DEG C；
(6) zinc layers are plated to casting billet surface and obtains semi-finished product, be subsequently cooled to room temperature, ultrasonic wave inspection then is carried out to semi-finished product
Survey, detection qualified as pedestal and support frame finished product, and support frame and pedestal are welded to connect fixation and obtain spring support hanging frame
Fitting fastening.
2. the preparation method of spring support hanging frame fitting fastening according to claim 1, it is characterised in that：Make described
The material of pedestal (1) and support frame (2) includes following components by mass percentage：
Cr:1%, Mo：0.8%, C：0.04%, Co：0.02%, Mn：0.8%, P：0.030%, S：0.03%, Ni：0.6%,
Ti：0.04%, W：0.2%, V：0.08%, Cu：0.4%, Si：0.8%, Nb：0.05%, Ta：0.02%, N：0.02%, Mg：
0.03%, rare earth element：0.15%, remaining is Fe and inevitable impurity；
Described rare earth element includes following components by mass percentage：Samarium：8%, bait：6%, lanthanum：5%, terbium：7%, dysprosium：
14%, lutetium：12%, ytterbium：8%, cerium：11%, neodymium：8, praseodymium：3%, surplus is lanthanide series, and above each component sum is 100%.
3. the preparation method of spring support hanging frame fitting fastening according to claim 1, it is characterised in that：Make described
The material of pedestal (1) and support frame (2) includes following components by mass percentage：
Cr:2%, Mo：0.9%, C：0.02%, Co：0.04%, Mn：0.5%, P：0.028%, S：0.01%, Ni：0.5%,
Ti：0.03%, W：0.3%, V：0.06%, Cu：0.3%, Si：0.5%, Nb：0.03%, Ta：0.04%, N：0.01%, Mg：
0.04%, rare earth element：0.18%, remaining is Fe and inevitable impurity；
Described rare earth element includes following components by mass percentage：Samarium：6%, bait：8%, lanthanum：8%, terbium：5%, dysprosium：
15%, lutetium：10%, ytterbium：9%, cerium：7%, neodymium：5%, praseodymium：4%, surplus is lanthanide series, and above each component sum is
100%.
4. the preparation method of spring support hanging frame fitting fastening according to claim 1, it is characterised in that：Make described
The material of pedestal (1) and support frame (2) includes following components by mass percentage：
Cr:3%, Mo：1.0%, C：0.03%, Co：0.05%, Mn：0.6%, P：0.025%, S：0.02%, Ni：0.55%,
Ti：0.05%, W：0.4%, V：0.05%, Cu：0.2%, Si：0.2%, Nb：0.04%, Ta：0.06%, N：0.015%,
Mg：0.02%, rare earth element：0.17%, remaining is Fe and inevitable impurity；
Described rare earth element includes following components by mass percentage：Samarium：5%, bait：7%, lanthanum：7%, terbium：3%, dysprosium：
13%, lutetium：11%, ytterbium：10%, cerium：8%, neodymium：7%, praseodymium：5%, surplus is lanthanide series, and above each component sum is
100%.
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| CN105369159A (en) * | 2015-12-04 | 2016-03-02 | 苏州市吴中区胥口丰收机械配件厂 | Processing process of high-temperature-resistant and anti-abrasion supporting hanger |
| CN105369158A (en) * | 2015-12-04 | 2016-03-02 | 苏州市神龙门窗有限公司 | Processing process of high-temperature-resistant stainless steel window frame |
| CN106282807A (en) * | 2016-08-17 | 2017-01-04 | 安徽红桥金属制造有限公司 | A kind of high-carbon hot rolling spring steel plate and process technique thereof |
| CN106350750A (en) * | 2016-08-31 | 2017-01-25 | 南京惠德机械有限公司 | Bearing rod of suspension riveting rivet positioning device and heat treatment process of bearing rod |
| CN106381454A (en) * | 2016-08-31 | 2017-02-08 | 南京惠德机械有限公司 | Piston rod of closed mold height measuring device and heat treatment technology of piston rod |
| CN107904505A (en) * | 2017-11-14 | 2018-04-13 | 张剑 | A kind of valve for sea water desalination processing |
| CN108754352A (en) * | 2018-05-25 | 2018-11-06 | 倍德力能源装备（江苏）有限公司 | A kind of energy-saving heat-insulating riser clamp |
| CN108799635A (en) * | 2018-06-15 | 2018-11-13 | 荣马电器有限公司 | A kind of high accurancy and precision damping suspension and support and its production technology |
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| CN102686760A (en) * | 2010-07-09 | 2012-09-19 | 住友金属工业株式会社 | Corrosion-resistant steel material for cargo oil tank |
| CN203297856U (en) * | 2013-04-27 | 2013-11-20 | 东风朝阳朝柴动力有限公司 | Fastening connecting piece capable of adjusting support spacing |
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| CN2200076Y (en) * | 1994-08-16 | 1995-06-07 | 中国石化北京设计院 | Spring support |
| CN2260221Y (en) * | 1996-12-03 | 1997-08-20 | 李新民 | Damped variable spring supporting hanging rack for heat pipeline |
| JP4159011B2 (en) * | 2000-03-09 | 2008-10-01 | 日本発条株式会社 | Spring steel and manufacturing method thereof |
| CN1166886C (en) * | 2001-12-11 | 2004-09-15 | 帖德顺 | Constant force spring support hanger frame whose supporting and hanging forces and displacement do not change and loading force can be regulated |
| CN203451034U (en) * | 2013-07-16 | 2014-02-26 | 江苏焱鑫科技股份有限公司 | Vertical displacement constant-force spring supporting hanger |
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| CN102686760A (en) * | 2010-07-09 | 2012-09-19 | 住友金属工业株式会社 | Corrosion-resistant steel material for cargo oil tank |
| CN203297856U (en) * | 2013-04-27 | 2013-11-20 | 东风朝阳朝柴动力有限公司 | Fastening connecting piece capable of adjusting support spacing |
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