CN104882832B - A kind of vertical male bend of ladder-type leads to gantry and preparation method thereof - Google Patents
A kind of vertical male bend of ladder-type leads to gantry and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of vertical male bends of ladder-type to lead to gantry, including symmetrically arranged truss and the setting stull between truss form, and the vertical male bend of ladder-type leads to the truss of gantry and stull is made for identical material, the material includes following components: C, Si, Mn, Ni, Mo, Cr, N, Cu, Al, Ti, S, P, Nb, V, rare earth element, surplus is Fe and inevitable impurity, and wherein rare earth element includes following components: lanthanum, cerium, praseodymium, dysprosium, holmium, gadolinium, yttrium, remaining is lanthanide rare；The present invention also designs the preparation method that a kind of vertical male bend of ladder-type leads to gantry, should preparation method is simple, preparation cost is cheap, any pollutant is not generated in production process, the vertical male bend of the ladder-type prepared leads to gantry, and processing performance is good, and intensity is high, quality is guaranteed.
Description
Technical field
The present invention relates to a kind of gantries and preparation method thereof, and in particular to a kind of vertical male bend of ladder-type leads to gantry and its system
Preparation Method.
Background technique
Cable testing bridge is to be made of to have contiguity branch the straightway of pallet or ladder, curved logical, component and trailing arm, hanger etc.
The rigid structure system for holding cable is mainly used for the comprehensive wirings such as mating power Transmission and line telecommunications transfer of powering, laying electricity
The supporting member of cable, this supporting member in Dian Li supply department, industrial and mining enterprises, hotel, comprehensive office facility concentration for matching
Power transmission system and line telecommunications of electricity etc. are most widely used；Existing cable testing bridge is mostly linear type, and shape is more single
One, when cable needs to change direction, two straight line cables can only vertically be connected, transition is unsmooth, and cable is bent excessively
Seriously, it is impaired to often lead to knee, influences normal use, also results in the reduction of cable service life, it is above in order to overcome
Defect, those skilled in the art, which have developed a kind of vertical male bend of ladder-type, leads to gantry and is used in knee, for cable
Laying, not will lead to cable bending it is excessively serious, extend the service life of cable, while also improving working efficiency,
The laying for facilitating cable facilitates the construction of personnel.
But the vertical male bend of existing ladder-type leads to the material that gantry uses, at high cost there are weight weight, installation is not
Convenient problem, and wearability, poor corrosion resistance, poor toughness, the bad angle that cannot be folded into needs of processing performance, therefore,
Researching and developing a kind of vertical male bend of the ladder-type that can overcome disadvantages described above and leading to gantry becomes those skilled in the art's technology urgently to be resolved
Problem.
Summary of the invention
The technical problem to be solved by the present invention is to propose a kind of ladder-type for the above disadvantage of the existing technology
Vertical male bend leads to gantry and preparation method thereof, and preparation method is simple for this, and preparation cost is cheap, does not produce in production process
Raw any pollutant, the vertical male bend of the ladder-type prepared lead to gantry, and processing performance is good, and intensity is high, quality is guaranteed.
The technical solution that the present invention solves the above technical problem is:
A kind of vertical male bend of ladder-type leads to gantry, including symmetrically arranged truss and stull is arranged between truss forms,
The vertical male bend of ladder-type lead to gantry truss and stull be made for identical material, the material include by mass percentage with
Lower component: C:0.25-0.35%, Si:0.2-0.4%, Mn:0.4-0.6%, Ni:1.0-1.5%, Mo:0.2-0.35%, Cr:1.0-
3.0%, N:0.11-0.13%, Cu:0.05-0.10%, Al:0.15-0.19%, Ti:0.23-0.25%, S≤0.015%, P≤
0.020%, Nb:0.01 ﹣ 0.05%, V:0.01 ﹣ 0.05%, rare earth element: 0.15-0.20%, surplus be Fe and inevitably it is miscellaneous
Matter, wherein rare earth element includes following components by mass percentage:
Lanthanum: 10-15%, cerium: 8-15%, praseodymium: 5-9%, dysprosium: 8-13%, holmium: 5-10%, gadolinium: 10-13%, yttrium: 5-9%, remaining
For lanthanide rare, the sum of the above rare earth each component is 100%.
The technical solution that the present invention further limits are as follows:
The vertical male bend of aforementioned ladder-type leads in gantry, including symmetrically arranged truss and stull group is arranged between truss
At the vertical male bend of ladder-type leads to the truss of gantry and stull is made for identical material, which wraps by mass percentage
Include following components: C:0.25%, Si:0.4%, Mn:0.5%, Ni:1.5%, Mo:0.35%, Cr:2.0%, N:0.11%, Cu:0.10%,
Al:0.17%, Ti:0.25%, S:0.008%, P:0.020%, Nb:0.03%, V:0.05%, rare earth element: 0.18%, surplus Fe
With inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 10%, cerium: 12%, praseodymium: 7%, dysprosium: 13%, holmium: 8%, gadolinium: 10%, yttrium: 8%, remaining is lanthanide rare, above dilute
The sum of native each component is 100%.
The vertical male bend of aforementioned ladder-type leads in gantry, including symmetrically arranged truss and stull group is arranged between truss
At the vertical male bend of ladder-type leads to the truss of gantry and stull is made for identical material, which wraps by mass percentage
Include following components: C:0.35%, Si:0.2%, Mn:0.4%, Ni:1.0%, Mo:0.2%, Cr:3.0%, N:0.13%, Cu:0.08%,
Al:0.19%, Ti:0.23%, S:0.010%, P:0.010%, Nb:0.01%, V:0.03%, rare earth element: 0.15%, surplus Fe
With inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 15%, cerium: 8%, praseodymium: 5%, dysprosium: 8%, holmium: 5%, gadolinium: 13%, yttrium: 5%, remaining is lanthanide rare, the above rare earth
The sum of each component is 100%.
The vertical male bend of aforementioned ladder-type leads in gantry, including symmetrically arranged truss and stull group is arranged between truss
At the vertical male bend of ladder-type leads to the truss of gantry and stull is made for identical material, which wraps by mass percentage
Include following components: C:0.30%, Si:0.3%, Mn:0.6%, Ni:1.2%, Mo:0.29%, Cr:1.0%, N:0.12%, Cu:0.05%,
Al:0.15%, Ti:0.24%, S:0.015%, P:0.008%, Nb:0.05%, V:0.01%, rare earth element: 0.20%, surplus Fe
With inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 12%, cerium: 15%, praseodymium: 9%, dysprosium: 11%, holmium: 10%, gadolinium: 11%, yttrium: 9%, remaining is lanthanide rare, above dilute
The sum of native each component is 100%.
The preparation method that a kind of vertical male bend of ladder-type leads to gantry has also been devised in the present invention:
(1) it is made according to the shape that the vertical male bend of ladder-type leads to each component truss of gantry and stull using hardening water-glass sand
Type is blended casting mold, and a riser is arranged on the top of casting mold, after being blended molding, casting mold is sent to resistance-type and bakes the heating of core kiln
It is dried to 200-250 DEG C, brushing zirconium English powder quick drying paint on the working face of casting mold again after drying, paint thickness 0.1-
0.3mm, in which:
Waterglass chromite sand-CO is used at casting mold part sand core and fillet2Hardening, the diameter of riser are 900-950mm,
Height is 500-530mm, and ladder ingate, diameter 80-90mm is being arranged close to riser root；
(2) each group that the vertical male bend of ladder-type leads to gantry is sent into vacuum arc furnace ignition progress melting and obtains material liquid,
Smelting temperature control is 1500-1650 DEG C, is then refined again using LF furnace, and refining temperature is 1400-1520 DEG C, and refining time is
2-5min, whole process are blown into argon gas stirring, are then de-gassed with vacuum degassing furnace, and deaerate 1- at being 1100-1250 DEG C in temperature
3h；
(3) material liquid being poured into casting mold from the casting mould cap mouth prepared, pouring temperature is controlled at 1550-1560 DEG C,
Casting mold is kept the temperature at 700-750 DEG C to 20-30min after casting solidification together with casting, room temperature is finally air-cooled to and obtains slab；
(4) obtained slab is removed into flash removed, and distinguishes vehicle with common in-vehicle and goes out the logical each component of gantry of the vertical male bend of ladder-type
Convex surface, the end face face Deng Ge, be then placed in electric furnace and heated, be heated to 650-750 DEG C, and keep the temperature 5-8min, add
After heat then slab is heated to 430-450 DEG C again, the retention time is 10-18 min, then oil cooling or water cooling is extremely to room temperature by water cooling
Room temperature；
(5) slab obtained in step (4) is heated to 150-170 DEG C, heat preservation 5-10min carries out ageing treatment, then
Water mist or compressed air with 2-5 DEG C per second of cooling velocity first by slab cooling to 80-100 DEG C, it is then slowly air-cooled again to arrive room
Temperature；
(6) slab obtained in step (5) is heated to 350-400 DEG C, holding temperature is 13-15 min, then through cold
But technical cooling is to room temperature, cooling technique specifically: using water cooling and air-cooled combination, first uses water cooling with 3.0-3.3 DEG C/s's
Slab water cooling to 300-380 DEG C, is then air-cooled to 250-295 DEG C by cooling rate, then uses water cooling with the cold of 1.9-2.5 DEG C/s
But rate is finally air-cooled to room temperature by slab water cooling to 120-150 DEG C；
(7) slab through being cooled to room temperature in step (6) obtains the vertical male bend of ladder-type through blast cleaning and machining
Each component of logical gantry, and examine and reject underproof product, then the qualified vertical male bend of ladder-type is led to each portion of gantry
Part is assembled to obtain the logical gantry of the vertical male bend of complete ladder-type.
The beneficial effects of the present invention are:
Brushing quick drying paint can prevent casting scab from influencing the quality of cast(ing) surface on molding work face, and casting mold is carried out
Drying weaving is because generating stomata in the excessively high material liquid of entering of the moisture in sand core.
The affinity of the Nb and C that are added in the present invention are bigger, and Nb is combined prior to C after being added and generated niobium carbide (NbC),
It effectively prevent intercrystalline corrosion；The addition of Nb, V: formed when austenite grain is increasing they carbon, nitride diffusion it is small
Particle plays fixed function to austenite grain boundary, prevents Austenite Grain Growth, improves casting Coarsening Temperature；The carbon of Nb, V, nitridation
Solubility product of the object in austenite reduces, the effect of deformation-induced precipitation in addition, and carbon, nitride turn in austenite to ferrite
Disperse educt before change becomes ferritic nucleating agent, forms ferrite largely under lesser degree of supercooling, is not easy to grow up,
To refine ferrite crystal grain, yield strength and tensile strength are improved；On the one hand Nb, V, which is added, can reduce carbon equivalent content
While improve intensity, on the other hand, foreign body such as oxygen, nitrogen, sulphur etc. is fixed up, so as to improve the processing performance of casting
Solderability；
Titanium is strong deoxidier in steel, it can make the dense internal organization of steel, refines crystal grain power, reduce aging sensitivity and
Cold brittleness, improving welding property avoid intercrystalline corrosion；Copper can improve intensity and toughness, especially atmospheric corrosion performance.
It joined rare earth element in the present invention, since the metallic atomic radius of rare earth element is big and rare earth work with higher
Property, it is easy to it fills up in its crystal grain and defect, and generates the film that can hinder crystal grain continued growth, to make crystal grain refinement and mention
The performance of Gao Gang, meanwhile, rare earth element easily and the high compound of the element compounds generation fusing point such as oxygen, sulphur, can play purification steel
Effect.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of vertical male bend of ladder-type lead to gantry, including symmetrically arranged truss and setting truss it
Between stull form, the vertical male bend of ladder-type lead to gantry truss and stull be made for identical material, the material press quality hundred
Score meter includes following components: C:0.25%, Si:0.4%, Mn:0.5%, Ni:1.5%, Mo:0.35%, Cr:2.0%, N:0.11%,
Cu:0.10%, Al:0.17%, Ti:0.25%, S:0.008%, P:0.020%, Nb:0.03%, V:0.05%, rare earth element: 0.18%,
Surplus is Fe and inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 10%, cerium: 12%, praseodymium: 7%, dysprosium: 13%, holmium: 8%, gadolinium: 10%, yttrium: 8%, remaining is lanthanide rare, above dilute
The sum of native each component is 100%.
The vertical male bend of above-mentioned ladder-type leads to the preparation method of gantry:
(1) it is made according to the shape that the vertical male bend of ladder-type leads to each component truss of gantry and stull using hardening water-glass sand
Type is blended casting mold, and a riser is arranged on the top of casting mold, after being blended molding, casting mold is sent to resistance-type and bakes the heating of core kiln
It is dried to 225 DEG C, brushing zirconium English powder quick drying paint on the working face of casting mold again after drying, paint thickness 0.1mm,
In:
Waterglass chromite sand-CO is used at casting mold part sand core and fillet2Hardening, the diameter of riser are 950mm, height
For 515mm, ladder ingate, diameter 80mm are being set close to riser root；
(2) each group that the vertical male bend of ladder-type leads to gantry is sent into vacuum arc furnace ignition progress melting and obtains material liquid,
Smelting temperature control is 1500 DEG C, is then refined again using LF furnace, and refining temperature is 1520 DEG C, refining time 3min, whole
It is blown into argon gas stirring, is then de-gassed with vacuum degassing furnace, deaerate 2h at being 1100 DEG C in temperature；
(3) material liquid is poured into casting mold from the casting mould cap mouth prepared, pouring temperature is controlled at 1560 DEG C, and casting is solidifying
Gu casting mold is kept the temperature at 700 DEG C to 25min after together with casting, room temperature is finally air-cooled to and obtains slab；
(4) obtained slab is removed into flash removed, and distinguishes vehicle with common in-vehicle and goes out the logical each component of gantry of the vertical male bend of ladder-type
Convex surface, the end face face Deng Ge, be then placed in electric furnace and heated, be heated to 750 DEG C, and keep the temperature 5min, water after heating
It is cooled to room temperature, slab is then heated to 450 DEG C, retention time 15min again, then oil cooling or water cooling is to room temperature；
(5) slab obtained in step (4) is heated to 160 DEG C, heat preservation 5min carries out ageing treatment, then water mist or pressure
Contracting air with 2 DEG C of cooling velocity per second first by slab cooling to 90 DEG C, then again slowly it is air-cooled arrive room temperature；
(6) slab obtained in step (5) is heated to 350 DEG C, holding temperature is 13min, then cold through cooling technique
But to room temperature, cooling technique specifically: using water cooling and air-cooled combination, first use water cooling that will cast with the cooling rate of 3.0 DEG C/s
Then base water cooling is air-cooled to 250 DEG C to 350 DEG C, then use water cooling with the cooling rate of 2.5 DEG C/s by slab water cooling to 135 DEG C,
Finally it is air-cooled to room temperature；
(7) slab through being cooled to room temperature in step (6) obtains the vertical male bend of ladder-type through blast cleaning and machining
Each component of logical gantry, and examine and reject underproof product, then the qualified vertical male bend of ladder-type is led to each portion of gantry
Part is assembled to obtain the logical gantry of the vertical male bend of complete ladder-type.
Embodiment 2
The present embodiment provides a kind of vertical male bend of ladder-type lead to gantry, including symmetrically arranged truss and setting truss it
Between stull form, the vertical male bend of ladder-type lead to gantry truss and stull be made for identical material, the material press quality hundred
Score meter includes following components: C:0.35%, Si:0.2%, Mn:0.4%, Ni:1.0%, Mo:0.2%, Cr:3.0%, N:0.13%,
Cu:0.08%, Al:0.19%, Ti:0.23%, S:0.010%, P:0.010%, Nb:0.01%, V:0.03%, rare earth element: 0.15%,
Surplus is Fe and inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 15%, cerium: 8%, praseodymium: 5%, dysprosium: 8%, holmium: 5%, gadolinium: 13%, yttrium: 5%, remaining is lanthanide rare, the above rare earth
The sum of each component is 100%.
The vertical male bend of above-mentioned ladder-type leads to the preparation method of gantry:
(1) it is made according to the shape that the vertical male bend of ladder-type leads to each component truss of gantry and stull using hardening water-glass sand
Type is blended casting mold, and a riser is arranged on the top of casting mold, after being blended molding, casting mold is sent to resistance-type and bakes the heating of core kiln
It is dried to 200 DEG C, brushing zirconium English powder quick drying paint on the working face of casting mold again after drying, paint thickness 0.2mm,
In:
Waterglass chromite sand-CO is used at casting mold part sand core and fillet2Hardening, the diameter of riser are 900mm, height
For 500mm, ladder ingate, diameter 90mm are being set close to riser root；
(2) each group that the vertical male bend of ladder-type leads to gantry is sent into vacuum arc furnace ignition progress melting and obtains material liquid,
Smelting temperature control is 1650 DEG C, is then refined again using LF furnace, and refining temperature is 1400 DEG C, refining time 2min, whole
It is blown into argon gas stirring, is then de-gassed with vacuum degassing furnace, deaerate 1h at being 1250 DEG C in temperature；
(3) material liquid is poured into casting mold from the casting mould cap mouth prepared, pouring temperature is controlled at 1550 DEG C, and casting is solidifying
Gu casting mold is kept the temperature at 750 DEG C to 20min after together with casting, room temperature is finally air-cooled to and obtains slab；
(4) obtained slab is removed into flash removed, and distinguishes vehicle with common in-vehicle and goes out the logical each component of gantry of the vertical male bend of ladder-type
Convex surface, the end face face Deng Ge, be then placed in electric furnace and heated, be heated to 650 DEG C, and keep the temperature 8min, water after heating
It is cooled to room temperature, slab is then heated to 430 DEG C, retention time 18min again, then oil cooling or water cooling is to room temperature；
(5) slab obtained in step (4) is heated to 150 DEG C, heat preservation 10min carries out ageing treatment, then water mist or
Compressed air with 5 DEG C of cooling velocity per second first by slab cooling to 80 DEG C, then again slowly it is air-cooled arrive room temperature；
(6) slab obtained in step (5) is heated to 400 DEG C, holding temperature is 15min, then cold through cooling technique
But to room temperature, cooling technique specifically: using water cooling and air-cooled combination, first use water cooling that will cast with the cooling rate of 3.3 DEG C/s
Then base water cooling is air-cooled to 295 DEG C to 300 DEG C, then use water cooling with the cooling rate of 1.9 DEG C/s by slab water cooling to 120 DEG C,
Finally it is air-cooled to room temperature；
(7) slab through being cooled to room temperature in step (6) obtains the vertical male bend of ladder-type through blast cleaning and machining
Each component of logical gantry, and examine and reject underproof product, then the qualified vertical male bend of ladder-type is led to each portion of gantry
Part is assembled to obtain the logical gantry of the vertical male bend of complete ladder-type.
Embodiment 3
The present embodiment provides a kind of vertical male bend of ladder-type lead to gantry, including symmetrically arranged truss and setting truss it
Between stull form, the vertical male bend of ladder-type lead to gantry truss and stull be made for identical material, the material press quality hundred
Score meter includes following components: C:0.30%, Si:0.3%, Mn:0.6%, Ni:1.2%, Mo:0.29%, Cr:1.0%, N:0.12%,
Cu:0.05%, Al:0.15%, Ti:0.24%, S:0.015%, P:0.008%, Nb:0.05%, V:0.01%, rare earth element: 0.20%,
Surplus is Fe and inevitable impurity, wherein rare earth element includes following components by mass percentage:
Lanthanum: 12%, cerium: 15%, praseodymium: 9%, dysprosium: 11%, holmium: 10%, gadolinium: 11%, yttrium: 9%, remaining is lanthanide rare, above dilute
The sum of native each component is 100%.
The vertical male bend of above-mentioned ladder-type leads to the preparation method of gantry:
(1) it is made according to the shape that the vertical male bend of ladder-type leads to each component truss of gantry and stull using hardening water-glass sand
Type is blended casting mold, and a riser is arranged on the top of casting mold, after being blended molding, casting mold is sent to resistance-type and bakes the heating of core kiln
It is dried to 250 DEG C, brushing zirconium English powder quick drying paint on the working face of casting mold again after drying, paint thickness 0.3mm,
In:
Waterglass chromite sand-CO is used at casting mold part sand core and fillet2Hardening, the diameter of riser are 925mm, height
For 530mm, ladder ingate, diameter 85mm are being set close to riser root；
(2) each group that the vertical male bend of ladder-type leads to gantry is sent into vacuum arc furnace ignition progress melting and obtains material liquid,
Smelting temperature control is 1600 DEG C, is then refined again using LF furnace, and refining temperature is 1500 DEG C, refining time 5min, whole
It is blown into argon gas stirring, is then de-gassed with vacuum degassing furnace, deaerate 3h at being 1190 DEG C in temperature；
(3) material liquid is poured into casting mold from the casting mould cap mouth prepared, pouring temperature is controlled at 1555 DEG C, and casting is solidifying
Gu casting mold is kept the temperature at 730 DEG C to 30min after together with casting, room temperature is finally air-cooled to and obtains slab；
(4) obtained slab is removed into flash removed, and distinguishes vehicle with common in-vehicle and goes out the logical each component of gantry of the vertical male bend of ladder-type
Convex surface, the end face face Deng Ge, be then placed in electric furnace and heated, be heated to 700 DEG C, and keep the temperature 7min, water after heating
It is cooled to room temperature, slab is then heated to 440 DEG C, retention time 10min again, then oil cooling or water cooling is to room temperature；
(5) slab obtained in step (4) is heated to 170 DEG C, heat preservation 8min carries out ageing treatment, then water mist or pressure
Contracting air with 3 DEG C of cooling velocity per second first by slab cooling to 100 DEG C, then again slowly it is air-cooled arrive room temperature；
(6) slab obtained in step (5) is heated to 380 DEG C, holding temperature is 14min, then cold through cooling technique
But to room temperature, cooling technique specifically: using water cooling and air-cooled combination, first use water cooling that will cast with the cooling rate of 3.2 DEG C/s
Then base water cooling is air-cooled to 270 DEG C to 380 DEG C, then use water cooling with the cooling rate of 2.0 DEG C/s by slab water cooling to 150 DEG C,
Finally it is air-cooled to room temperature；
(7) slab through being cooled to room temperature in step (6) obtains the vertical male bend of ladder-type through blast cleaning and machining
Each component of logical gantry, and examine and reject underproof product, then the qualified vertical male bend of ladder-type is led to each portion of gantry
Part is assembled to obtain the logical gantry of the vertical male bend of complete ladder-type.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (4)
1. a kind of vertical male bend of ladder-type leads to the preparation method of gantry, it includes symmetrically arranged that the vertical male bend of the ladder-type, which leads to gantry,
It truss and stull is set between truss forms, the vertical male bend of the ladder-type leads to the truss of gantry and stull is identical material system
It forms, which includes following components by mass percentage:
C:0.25-0.35%, Si:0.2-0.4%, Mn:0.4-0.6%, Ni:1.0-1.5%, Mo:0.2-0.35%, Cr:1.0-
3.0%, N:0.11-0.13%, Cu:0.05-0.10%, Al:0.15-0.19%, Ti:0.23-0.25%, S≤0.015%, P≤
0.020%, Nb:0.01 ﹣ 0.05%, V:0.01 ﹣ 0.05%, rare earth element: 0.15-0.20%, surplus be Fe and inevitably it is miscellaneous
Matter, wherein the rare earth element includes following components by mass percentage:
Lanthanum: 10-15%, cerium: 8-15%, praseodymium: 5-9%, dysprosium: 8-13%, holmium: 5-10%, gadolinium: 10-13%, yttrium: 5-9%, remaining is lanthanum
It is rare earth, the sum of above rare earth each component is 100%, which is characterized in that the vertical male bend of the ladder-type leads to the preparation method tool of gantry
Body is as follows:
(1) it is made according to the shape that the vertical male bend of ladder-type leads to each component truss of gantry and stull using hardening water-glass sand
Type is blended casting mold, and a riser is arranged on the top of casting mold, after being blended molding, casting mold is sent to resistance-type and bakes the heating of core kiln
It is dried to 200-250 DEG C, brushing zirconium English powder quick drying paint on the working face of casting mold again after drying, paint thickness 0.1-
0.3mm, in which:
Waterglass chromite sand-CO is used at casting mold part sand core and fillet2Hardening, the diameter of the riser are 900-950mm,
Height is 500-530mm, and ladder ingate, diameter 80-90mm is being arranged close to riser root；
(2) each group that the vertical male bend of ladder-type leads to gantry is sent into vacuum arc furnace ignition progress melting and obtains material liquid, melting
Temperature control is 1500-1650 DEG C, is then refined again using LF furnace, and refining temperature is 1400-1520 DEG C, refining time 2-
5min, whole process are blown into argon gas stirring, are then de-gassed with vacuum degassing furnace, and deaerate 1-3h at being 1100-1250 DEG C in temperature；
(3) material liquid is poured into casting mold from the casting mould cap mouth prepared, pouring temperature controls the casting at 1550-1560 DEG C
Casting mold is kept the temperature at 700-750 DEG C to 20-30min after solidification together with casting, room temperature is finally air-cooled to and obtains slab；
(4) obtained slab is removed into flash removed, and distinguishes vehicle with common in-vehicle and goes out the convex of the logical each component of gantry of the vertical male bend of ladder-type
Face, end face, are then placed in electric furnace and are heated, and are heated to 650-750 DEG C, and keep the temperature 5-8min, and water cooling is extremely after heating
Then slab is heated to 430-450 DEG C again by room temperature, the retention time is 10-18 min, then oil cooling or water cooling is to room temperature；
(5) slab obtained in step (4) is heated to 150-170 DEG C, heat preservation 5-10min carries out ageing treatment, then water mist
Or compressed air with 2-5 DEG C per second of cooling velocity first by slab cooling to 80-100 DEG C, then again slowly it is air-cooled arrive room temperature；
(6) slab obtained in step (5) is heated to 350-400 DEG C, holding temperature is 13-15 min, then through bosher
Skill is cooled to room temperature, the cooling technique specifically: using water cooling and air-cooled combination, first uses water cooling with 3.0-3.3 DEG C/s
Cooling rate by slab water cooling to 300-380 DEG C, be then air-cooled to 250-295 DEG C, then use water cooling with 1.9-2.5 DEG C/s's
Slab water cooling to 120-150 DEG C, is finally air-cooled to room temperature by cooling rate；
(7) slab through being cooled to room temperature in step (6) obtains the logical bridge of the vertical male bend of ladder-type through blast cleaning and machining
Each component of frame, and examine and reject underproof product, then the qualified vertical male bend of ladder-type is led to each component of gantry into
Row assembling obtains the vertical male bend of complete ladder-type and leads to gantry.
2. the vertical male bend of ladder-type according to claim 1 leads to the preparation method of gantry, including symmetrically arranged truss and
Stull is arranged between truss to form, it is characterised in that: the vertical male bend of the ladder-type leads to the truss of gantry and stull is same
Material is made, which includes following components by mass percentage:
C:0.25%, Si:0.4%, Mn:0.5%, Ni:1.5%, Mo:0.35%, Cr:2.0%, N:0.11%, Cu:0.10%, Al:
0.17%, Ti:0.25%, S:0.008%, P:0.020%, Nb:0.03%, V:0.05%, rare earth element: 0.18%, surplus is for Fe and not
Evitable impurity, wherein the rare earth element includes following components by mass percentage:
Lanthanum: 10%, cerium: 12%, praseodymium: 7%, dysprosium: 13%, holmium: 8%, gadolinium: 10%, yttrium: 8%, remaining is lanthanide rare, and the above rare earth is each
The sum of component is 100%.
3. the vertical male bend of ladder-type according to claim 1 leads to the preparation method of gantry, including symmetrically arranged truss and
Stull is arranged between truss to form, it is characterised in that: the vertical male bend of the ladder-type leads to the truss of gantry and stull is same
Material is made, which includes following components by mass percentage:
C:0.35%, Si:0.2%, Mn:0.4%, Ni:1.0%, Mo:0.2%, Cr:3.0%, N:0.13%, Cu:0.08%, Al:
0.19%, Ti:0.23%, S:0.010%, P:0.010%, Nb:0.01%, V:0.03%, rare earth element: 0.15%, surplus is for Fe and not
Evitable impurity, wherein the rare earth element includes following components by mass percentage:
Lanthanum: 15%, cerium: 8%, praseodymium: 5%, dysprosium: 8%, holmium: 5%, gadolinium: 13%, yttrium: 5%, remaining is lanthanide rare, the above rare earth each group
/ and be 100%.
4. the vertical male bend of ladder-type according to claim 1 leads to the preparation method of gantry, including symmetrically arranged truss and
Stull is arranged between truss to form, it is characterised in that: the vertical male bend of the ladder-type leads to the truss of gantry and stull is same
Material is made, which includes following components by mass percentage:
C:0.30%, Si:0.3%, Mn:0.6%, Ni:1.2%, Mo:0.29%, Cr:1.0%, N:0.12%, Cu:0.05%, Al:
0.15%, Ti:0.24%, S:0.015%, P:0.008%, Nb:0.05%, V:0.01%, rare earth element: 0.20%, surplus is for Fe and not
Evitable impurity, wherein the rare earth element includes following components by mass percentage:
Lanthanum: 12%, cerium: 15%, praseodymium: 9%, dysprosium: 11%, holmium: 10%, gadolinium: 11%, yttrium: 9%, remaining is lanthanide rare, and the above rare earth is each
The sum of component is 100%.
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| CN108988240A (en) * | 2018-06-21 | 2018-12-11 | 镇江市益宝电气科技有限公司 | A kind of quarter bend leads to cable testing bridge and its production technology |
| KR102488680B1 (en) | 2019-03-08 | 2023-01-17 | 주식회사 엘지에너지솔루션 | Negative Electrode for Lithium Secondary Battery, Method for Preparing the Same and Lithium Secondary Battery Comprising the Same |
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