CN107414057A - The manufacture method of overall composite casting high-speed railway track switch slider bed platen - Google Patents
The manufacture method of overall composite casting high-speed railway track switch slider bed platen Download PDFInfo
- Publication number
- CN107414057A CN107414057A CN201710277586.XA CN201710277586A CN107414057A CN 107414057 A CN107414057 A CN 107414057A CN 201710277586 A CN201710277586 A CN 201710277586A CN 107414057 A CN107414057 A CN 107414057A
- Authority
- CN
- China
- Prior art keywords
- slider bed
- bed platen
- working face
- casting
- track switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Machine Tool Units (AREA)
Abstract
The present invention relates to a kind of manufacture method of overall composite casting high-speed railway track switch slider bed platen, high-speed railway track switch slider bed platen is molded by slider bed pallet body and slider bed platen working face through composite casting；The slider bed pallet body is molded using the carbon steels of ZG230 450 through mound precoated sand Molding Casting, and slider bed platen working face carries out composite casting using martensitic stain less steel；Specifically include：1) slider bed pallet body is cast；2) slider bed platen working face composite casting；3) heat treatment and working face processing；4) the high-speed railway track switch slider bed platen after being heat-treated can come into operation through vulcanization of rubber processing again.The present invention improves the composite quality of compound slider bed platen and makes precision, reduce production cost on the premise of slider bed platen function admirable is ensured.
Description
Technical field
The present invention relates to railway equipment technical field, more particularly to a kind of high-speed railway track switch slider bed platen.
Background technology
In recent years, China Express Railway is quickly grown, with increasing substantially for train speed, the security of railway transportation
It is particularly important；One of important component as railroad track, track switch has more quantity, construction complexity, service life is short, limits
The features such as train speed processed, travel safety are low, maintenance input is big, and strength member of the slider bed platen as track switch,
Play support tongue in the range of whole length of switch rail, withhold stock rail；Before train speed raising, domestic slider bed platen is adopted substantially
Easily it is deformed and splits with Split type welded structure, but when subject matter existing for the slider bed platen of Split type welded is welding
Line, and process-cycle length, cost are high.After train speed raising especially high ferro occurs, there is solid forging in domestic slider bed platen
Or monoblock cast structure, weld one layer of wearing layer in its upper surface；But because wearing layer is too thin, the period of validity used is too short.
The Chinese patent of Application No. 201610325819.4 discloses that " a kind of railway high speed track switch of physical bond is compound
Type slider bed platen ", base material is cast to cover physical bond is carried out on material using upper and lower double-layer structure complex method, and its advantage is
It is function admirable, cost-effective.The technical scheme using Q235 steel as base material, make by the martensitic stainless steel containing Cr >=11.5%
To cover material, cover perforate on material steel plate and set boss, the base material molten steel after fusing is cast to and covered on material, material is covered in casting cycle
It is non-fusible, boss is wrapped up after base material solidification shrinkage and forms base material and covers the physical bond of material.But the casting character of Q235 steel is remote
Not as ZG230-450 cast steels, be not suitable for large-scale and complex-shaped parts, after its solidification shrinkage and cover the knot between material and boss
Effect poor controllability is closed, therefore, it is difficult to ensure the overall composite quality and dimensional accuracy of slider bed platen.
The content of the invention
The invention provides a kind of manufacture method of overall composite casting high-speed railway track switch slider bed platen, using ZG230-450
Slider bed pallet body is made by mound precoated sand Molding Casting in cast steel, then carries out composite casting using martensitic stain less steel and formed
Slider bed platen working face, on the premise of slider bed platen function admirable is ensured, improve the composite quality of compound slider bed platen
And precision is made, reduce production cost.
In order to achieve the above object, the present invention is realized using following technical scheme：
The manufacture method of overall composite casting high-speed railway track switch slider bed platen, high-speed railway track switch slider bed platen is by slider bed pallet body
It is molded with slider bed platen working face through composite casting；The slider bed pallet body is using ZG230-450 carbon steels through mound precoated sand
Molding Casting is molded, and slider bed platen working face carries out composite casting using martensitic stain less steel；Specifically comprise the following steps：
1) slider bed pallet body is cast；Cast using ZG230-450 carbon steels, reserved slider bed platen working face is compound during casting
Casting space, thickness are 10~15mm, and in slider bed platen working face composite casting space interior edge longitudinal direction and are transversely formed several
The fixing muscle of trapezoid cross section；Using precoated sand moulding line, using nice foundry sand as sand molding, core is made, will be passed through after mould assembling
The molten steel quantitative casting that intermediate frequency furnace is smelted is into die cavity, natural cooling shaping；Mould casting is needed by spectral detection, chemical composition
Meet standard requirement；
2) slider bed platen working face composite casting；Slider bed platen working face is cast using martensitic stain less steel, and martensite is not
The chemical composition of rust steel is C≤0.08% by weight percentage；Si≤1.0%；Mn≤1.0%；P≤0.03%；S≤
0.02%；Ni 1%~2%；Cr 12%~15.5%；W 1.5%~3.5%；Mo 0.8%~2.5%；Nb 0.1%~
0.3%；V 0.8%~2.0%, surplus are Fe and inevitable impurity；
During composite casting, first the slider bed pallet body cast is put to be added in hot stove and be heated to 500~600 DEG C, then
Slider bed platen working face side is horizontal positioned upward；The martensitic stain less steel molten steel smelted through intermediate frequency furnace is poured into reserved slider bed
In platen working face composite casting space, stop casting after molten steel is full of slider bed platen working face composite casting space, it is natural
High-speed railway track switch slider bed platen is made after cooling；In the presence of the fixing muscle of trapezoid cross section, slider bed platen working face and slider bed platform
It is tightly combined between plate main body, fixation；
3) heat treatment and working face processing；High-speed railway track switch slider bed platen after cooling is heat-treated by machining and 3 times again,
Specially：
Hidden lino removal, it is therefore an objective to eliminate caused casting stress after composite casting；By high-speed railway track switch slider bed platen
It is placed in high temperature heat treatment furnace, is heated to 910 DEG C~930 DEG C, is incubated 3 hours, is air-cooled to room temperature；
Roughing and quenching heat treatment, slider bed platen working face leave 5~6mm allowance, hidden lino removal
After end, roughing is carried out using surface grinding machine or vertical knee-type milling machine, 0.3~0.5mm surpluses are stayed after roughing, are then quenched
Heat treatment, it is therefore an objective to improve cast(ing) surface hardness；High-frequency quenching equipment is specifically used by high-speed railway track switch slider bed platen working face
Transient heating, 1075~1085 DEG C of heating-up temperature, then water-spraying control, high-speed railway track switch slider bed platen working face after quenching heat treatment
Through hardening layer depth is more than 2mm, and hardness is 280~320HB；
Temper and finishing, high-speed railway track switch slider bed platen carries out temper after the completion of quenching heat treatment, it is therefore an objective to
Quenching internal stress, stabilizing tissue and size are eliminated, fragility is reduced, obtains required mechanical property；270~290 DEG C of temperature,
Insulation 3 hours, is air-cooled to room temperature；After temper, high-speed railway track switch slider bed platen working face is refined to drawing requirement size；
4) the high-speed railway track switch slider bed platen after being heat-treated can come into operation through vulcanization of rubber processing again.
Compared with prior art, the beneficial effects of the invention are as follows：
1) its good casting property, it is more suitable for heavy castings as slider bed pallet body material using ZG230-450 cast steels and pours
Casting, formed precision is high, therefore the conventional application material as slider bed platen all the time, and it not only has mechanical performance and good percentage elongation
The advantages of, and it is cheap；
2) using martensitic stain less steel as slider bed platen working face material, with the addition of in the martensitic stain less steel Nb, Ti,
W, the Intensive intervention such as V body alloying element, can prevent growing up for crystal grain, play a part of crystal grain thinning；These alloys member simultaneously
Element can also be dissolved the cylindrical shape Mc carbide to form high rigidity particle with carbon, nitrogen, so that the martensitic stain less steel has
At a relatively high hardness, wearability and good corrosion resistance；
3) slider bed pallet body is made up of mound precoated sand Molding Casting, and using automatic production line, production efficiency is high,
Process control is strong；Casting dimension accuracy is high, surface is smooth, without post-production, greatly reduces production cost；
4) it is once-forming a plurality of in reserved slider bed platen working face composite casting space when slider bed pallet body is cast
The fixing muscle of trapezoid cross section, fixing muscle are arranged in length and breadth in latticed, and jail is combined with main body after slider bed platen working face composite casting
Gu；
5) it is automatic to employ the green mound overlay film sand molding that country's suggestion is promoted for manufacture method of the present invention
Production line, its technique is simple, automaticity is high, is especially suitable for producing in enormous quantities.
Brief description of the drawings
Fig. 1 is a kind of front view of overall composite casting high-speed railway track switch slider bed platen of the present invention.
Fig. 2 is a kind of top view of overall composite casting high-speed railway track switch slider bed platen of the present invention.
In figure：1. the trapezoid cross section fixing muscle of 2. slider bed platen working face of slider bed pallet body 3.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, the manufacture method of overall composite casting high-speed railway track switch slider bed platen of the present invention, high railway
Trouble slider bed platen is molded by slider bed pallet body 1 and slider bed platen working face 2 through composite casting；The slider bed pallet body 1 is adopted
It is molded with ZG230-450 carbon steels through mound precoated sand Molding Casting, slider bed platen working face 2 is answered using martensitic stain less steel
Close casting；Specifically comprise the following steps：
1) slider bed pallet body is cast；Cast using ZG230-450 carbon steels, reserved slider bed platen working face is compound during casting
Casting space, thickness are 10~15mm, and in slider bed platen working face composite casting space interior edge longitudinal direction and are transversely formed several
The fixing muscle 3 of trapezoid cross section；Using precoated sand moulding line, using nice foundry sand as sand molding, core is made, will be passed through after mould assembling
The molten steel quantitative casting that intermediate frequency furnace is smelted is into die cavity, natural cooling shaping；Mould casting is needed by spectral detection, chemical composition
Meet standard requirement；
2) slider bed platen working face composite casting；Slider bed platen working face 2 is cast using martensitic stain less steel, and martensite is not
The chemical composition of rust steel is C≤0.08% by weight percentage；Si≤1.0%；Mn≤1.0%；P≤0.03%；S≤
0.02%；Ni 1%~2%；Cr 12%~15.5%；W 1.5%~3.5%；Mo 0.8%~2.5%；Nb 0.1%~
0.3%；V 0.8%~2.0%, surplus are Fe and inevitable impurity；
During composite casting, first the slider bed pallet body 1 cast is put to be added in hot stove and be heated to 500~600 DEG C, then
Slider bed platen working face side is horizontal positioned upward；The martensitic stain less steel molten steel smelted through intermediate frequency furnace is poured into reserved slider bed
In platen working face composite casting space, stop casting after molten steel is full of slider bed platen working face composite casting space, it is natural
High-speed railway track switch slider bed platen is made after cooling；In the presence of trapezoid cross section fixing muscle 3, slider bed platen working face 2 and slider bed
It is tightly combined between pallet body 1, fixation；
3) heat treatment and working face processing；High-speed railway track switch slider bed platen after cooling is heat-treated by machining and 3 times again,
Specially：
Hidden lino removal, it is therefore an objective to eliminate caused casting stress after composite casting；By high-speed railway track switch slider bed platen
It is placed in high temperature heat treatment furnace, is heated to 910 DEG C~930 DEG C, is incubated 3 hours, is air-cooled to room temperature；
Roughing and quenching heat treatment, slider bed platen working face leave 5~6mm allowance, hidden lino removal
After end, roughing is carried out using surface grinding machine or vertical knee-type milling machine, 0.3~0.5mm surpluses are stayed after roughing, are then quenched
Heat treatment, it is therefore an objective to improve cast(ing) surface hardness；High-frequency quenching equipment is specifically used by high-speed railway track switch slider bed platen working face
Transient heating, 1075~1085 DEG C of heating-up temperature, then water-spraying control, high-speed railway track switch slider bed platen working face after quenching heat treatment
Through hardening layer depth is more than 2mm, and hardness is 280~320HB；
Temper and finishing, high-speed railway track switch slider bed platen carries out temper after the completion of quenching heat treatment, it is therefore an objective to
Quenching internal stress, stabilizing tissue and size are eliminated, fragility is reduced, obtains required mechanical property；270~290 DEG C of temperature,
Insulation 3 hours, is air-cooled to room temperature；After temper, high-speed railway track switch slider bed platen working face is refined to drawing requirement size；
4) the high-speed railway track switch slider bed platen after being heat-treated can come into operation through vulcanization of rubber processing again.
Nb, Ti, W, V alloy element are added in martensite stainless steel material of the present invention, its effect is as follows：
1) wearability is increased；Above alloying element forms solidifying particle in casting solidification process, can prevent the length of crystal grain
Greatly, crystal grain thinning is played a part of, wherein Nb, Ti can also play a part of fixed C, so as to suppress CrC formation, Cr's
Effect is lower can to separate out tiny rich Cr phases, so as to reach the effect of enhancing wearability；
2) corrosion resistance is improved：General material all has good corrosion resistance after adding Cr elements, and chromium-containing stainless steel is big
Decay resistance in gas or the aqueous solution improves the equilibrium electrod potential of metal material mainly due to Cr elements, so as to prevent
The anode of micro cell, that is, the oxidation of metal；For other chromium-containing stainless steel when running into corrosive medium, surface can form one
The fine and close passivating film of layer, can separate metal and corrosive medium, and this layer of passivating film can be after being destroyed voluntarily
Repair, therefore material can be made to avoid homogeneous corrosion, crevice corrosion, intercrystalline corrosion, stress corrosion etc.；
3) corrosion resistance and wearability of slider bed platen, the present invention are chemical in conventional mar stainless steel in order to better improve
The content of Cr elements and W elements is improved on the basis of composition；In order to further refine chromium carbide Slag inclusion, with the addition of N element,
Mo elements and V element.
Following examples are implemented under premised on technical solution of the present invention, give detailed embodiment and tool
Body operating process, but protection scope of the present invention is not limited to following embodiments.Method therefor is as without especially in following embodiments
Explanation is conventional method.
【Embodiment】
In the present embodiment, the size of slider bed platen is grown for 720mm, and 180mm is wide, and slider bed platen connects middle empty with bottom plate
Chamber size requirement is strict, it is desirable to which casting, without machining, casting is not allow for any deformation, rough etc.
Problem occurs.Furthermore, it desired to meet 3 conditions that slider bed platen works in the wild:1) good wearability；2) good antirust
Erosion ability；3) good self lubricity.
In the present embodiment, the manufacturing process of overall composite casting slider bed platen is as follows：
1) slider bed pallet body is cast：
Slider bed pallet body is cast using common ZG230-450 carbon steel materials, reserved slider bed platen working face during design
Composite casting space, i.e. top surface 10mm recessed down, while form several in casting and consolidate to the trapezoid cross section that inner underside is tightened up
Determine muscle, its sectional dimension is 8mm (top surface width) x4mm (bottom width) fixing muscle, and fixing muscle respectively sets 2 along longitudinal and transverse direction
Bar.
Using mound precoated sand precision casting automatic assembly line, the production line is provided with 12 moulding stations, each moulder
Position sets 3 hot box machines, wherein 2 hot box machines are respectively used to make top box and nowel, 1 hot box machine is used to make in addition
Fuse, altogether provided with 36 hot boxs；Mound precoated sand precision casting automatic assembly line uses quantitative pouring, moulding, makes core, mould assembling
All it is Automated condtrol, is completed by manipulator, ZG230-450 carbon steels casting molten steel uses intermediate frequency furnace melting, passes through spectral detection
Chemical composition.
Slider bed platen working face uses high-wearing feature specialty martensitic body stainless steel material, its chemical composition major control：C
0.05%~0.075%, Cr 14%~15.5%, Ni 1.5%~2%, Nb 0.1%~0.28%. chemical compositions are adjusted
Final sampling is completed in steel ladle afterwards, and each piece of sample spectral detection is averaged for 3 times；It is 3 actual samplings in following table
Determine the result of chemical composition；
| Chemical analysis | C | Si | Mn | P | S | Ni | Cr | W | Mo | Nb | V |
| Embodiment 1 | 0.068 | 0.87 | 0.79 | 0.026 | 0.017 | 1.86 | 14.3 | 3.1 | 2.0 | 0.24 | 1.52 |
| Embodiment 2 | 0.059 | 0.91 | 0.81 | 0.024 | 0.015 | 1.70 | 13.93 | 3.12 | 2.21 | 0.27 | 1.41 |
| Embodiment 3 | 0.052 | 0.72 | 0.68 | 0.022 | 0.012 | 1.75 | 14.3 | 2.8 | 1.94 | 0.21 | 1.44 |
During composite casting, cast good slider bed pallet body is placed in heating furnace is heated to 600 DEG C in advance, used
Intermediate frequency furnace melting martensitic stain less steel, slider bed pallet body is placed in horizontal plane before cast, by martensitic stain less steel
Cast to the recess of slider bed pallet body, after molten steel is full of the segment space, stops casting, turn after natural cooling
Enter next process.The parameter of composite casting and subsequent heat treatment process is as shown in the table：
The present embodiment solves the problems such as non-processing casting emphasis size distortion using mound precoated sand formative method, simultaneously
The surface smoothness and dimensional accuracy of casting are improved, and production cost greatly reduces.
Overall composite casting slider bed platen development and production success in the present embodiment；Successfully will using the method for the invention
Together with stainless steel and straight carbon steel composite casting, its is functional, is fully able to substitute the stainless steel slider bed platen of monoblock cast,
And production cost 30%-40% is saved, while has also filled up the country of stainless steel and carbon steel composite casting production slider bed platen
Technological gap.
The simple production process of the method for the invention is feasible, and utilization rate of equipment and installations is high, and employs country and suggest promoting
Green mound overlay film sand molding automatic assembly line, be advantageous to promote that China's nice foundry sand product is fast-developing and China
2025 industry 4.0 are planned, to realize that China's industrial automation, informationization, intelligent high-end industry are made that contribution.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (1)
1. the manufacture method of overall composite casting high-speed railway track switch slider bed platen, high-speed railway track switch slider bed platen by slider bed pallet body and
Slider bed platen working face is molded through composite casting；Characterized in that, the slider bed pallet body uses ZG230-450 carbon steels through treasured
Pearl precoated sand Molding Casting is molded, and slider bed platen working face carries out composite casting using martensitic stain less steel；Specifically include as follows
Step：
1) slider bed pallet body is cast；Cast using ZG230-450 carbon steels, reserved slider bed platen working face composite casting during casting
Space, thickness are 10~15mm, and in slider bed platen working face composite casting space interior edge longitudinal direction and to be transversely formed several trapezoidal
The fixing muscle in section；Using precoated sand moulding line, using nice foundry sand as sand molding, core is made, intermediate frequency will be passed through after mould assembling
The molten steel quantitative casting that stove is smelted is into die cavity, natural cooling shaping；Mould casting need to be met by spectral detection, chemical composition
Standard requirement；
2) slider bed platen working face composite casting；Slider bed platen working face is cast using martensitic stain less steel, martensitic stain less steel
Chemical composition be C≤0.08% by weight percentage；Si≤1.0%；Mn≤1.0%；P≤0.03%；S≤0.02%；Ni
1%~2%；Cr 12%~15.5%；W 1.5%~3.5%；Mo 0.8%~2.5%；Nb 0.1%~0.3%；V
0.8%~2.0%, surplus is Fe and inevitable impurity；
During composite casting, first the slider bed pallet body cast is put to be added in hot stove and be heated to 500~600 DEG C, then slider bed
Platen working face side is horizontal positioned upward；The martensitic stain less steel molten steel smelted through intermediate frequency furnace is poured into reserved slider bed platen
In working face composite casting space, stop casting, natural cooling after molten steel is full of slider bed platen working face composite casting space
High-speed railway track switch slider bed platen is made afterwards；In the presence of the fixing muscle of trapezoid cross section, slider bed platen working face and slider bed platen master
It is tightly combined between body, fixation；
3) heat treatment and working face processing；High-speed railway track switch slider bed platen after cooling is heat-treated by machining and 3 times again, specifically
For：
Hidden lino removal, it is therefore an objective to eliminate caused casting stress after composite casting；High-speed railway track switch slider bed platen is placed in
In high temperature heat treatment furnace, 910 DEG C~930 DEG C are heated to, 3 hours is incubated, is air-cooled to room temperature；
Roughing and quenching heat treatment, slider bed platen working face leave 5~6mm allowance, and hidden lino removal terminates
Afterwards, roughing is carried out using surface grinding machine or vertical knee-type milling machine, 0.3~0.5mm surpluses is stayed after roughing, then carry out quenching hot place
Reason, it is therefore an objective to improve cast(ing) surface hardness；High-frequency quenching equipment is specifically used by high-speed railway track switch slider bed platen working face moment
Heat, 1075~1085 DEG C of heating-up temperature, then water-spraying control, high-speed railway track switch slider bed platen working face through hardening after quenching heat treatment
Layer depth is more than 2mm, and hardness is 280~320HB；
Temper and finishing, high-speed railway track switch slider bed platen carries out temper after the completion of quenching heat treatment, it is therefore an objective to eliminates
Internal stress, stabilizing tissue and size are quenched, fragility is reduced, obtains required mechanical property；270~290 DEG C of temperature, insulation
3 hours, it is air-cooled to room temperature；After temper, high-speed railway track switch slider bed platen working face is refined to drawing requirement size；
4) the high-speed railway track switch slider bed platen after being heat-treated can come into operation through vulcanization of rubber processing again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277586.XA CN107414057B (en) | 2017-04-25 | 2017-04-25 | The manufacturing method of whole composite casting high-speed railway track switch slider bed platen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277586.XA CN107414057B (en) | 2017-04-25 | 2017-04-25 | The manufacturing method of whole composite casting high-speed railway track switch slider bed platen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107414057A true CN107414057A (en) | 2017-12-01 |
| CN107414057B CN107414057B (en) | 2018-12-21 |
Family
ID=60424308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710277586.XA Active CN107414057B (en) | 2017-04-25 | 2017-04-25 | The manufacturing method of whole composite casting high-speed railway track switch slider bed platen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107414057B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193130A (en) * | 2017-12-28 | 2018-06-22 | 辽宁福鞍重工股份有限公司 | A kind of method for centrifuging electroslag smelting casting production high ferro brake disc |
| CN108914022A (en) * | 2018-08-02 | 2018-11-30 | 李庆杰 | A kind of preparation method of cast-sintering slider bed platen |
| CN108914119A (en) * | 2018-08-02 | 2018-11-30 | 李庆杰 | A kind of preparation method incuding cladding slider bed platen |
| CN110306384A (en) * | 2019-07-01 | 2019-10-08 | 株洲安成实业有限公司 | A kind of compound slider bed platen of railway switch and preparation method thereof |
| CN110656283A (en) * | 2018-11-07 | 2020-01-07 | 锦州捷通铁路机械股份有限公司 | High-strength martensitic stainless steel for high-speed railway turnout sliding bed bedplate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062658A (en) * | 2001-08-28 | 2003-03-05 | Ueda Seni Kagaku Shinkokai | Compound material of inter-metallic compound and ceramics with metal and its manufacturing method |
| CN104605746A (en) * | 2015-01-04 | 2015-05-13 | 河南科技大学 | Composite pot, manufacturing method and mold |
| CN105033228A (en) * | 2015-08-10 | 2015-11-11 | 宁波通达精密铸造有限公司 | Abrasion-resistant block for protecting digging bucket and preparation method thereof |
| CN105970743A (en) * | 2016-05-17 | 2016-09-28 | 沈阳鼎然新材料有限公司 | Physically-combined railway high-speed turnout compounding type slide bed platen |
| CN106149481A (en) * | 2015-04-06 | 2016-11-23 | 杜江 | A kind of track switch slider bed platform and manufacture method |
| CN205874852U (en) * | 2016-05-25 | 2017-01-11 | 大连交通大学 | Compound self -lubricating switch sliding plate of bimetal |
-
2017
- 2017-04-25 CN CN201710277586.XA patent/CN107414057B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062658A (en) * | 2001-08-28 | 2003-03-05 | Ueda Seni Kagaku Shinkokai | Compound material of inter-metallic compound and ceramics with metal and its manufacturing method |
| CN104605746A (en) * | 2015-01-04 | 2015-05-13 | 河南科技大学 | Composite pot, manufacturing method and mold |
| CN106149481A (en) * | 2015-04-06 | 2016-11-23 | 杜江 | A kind of track switch slider bed platform and manufacture method |
| CN105033228A (en) * | 2015-08-10 | 2015-11-11 | 宁波通达精密铸造有限公司 | Abrasion-resistant block for protecting digging bucket and preparation method thereof |
| CN105970743A (en) * | 2016-05-17 | 2016-09-28 | 沈阳鼎然新材料有限公司 | Physically-combined railway high-speed turnout compounding type slide bed platen |
| CN205874852U (en) * | 2016-05-25 | 2017-01-11 | 大连交通大学 | Compound self -lubricating switch sliding plate of bimetal |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193130A (en) * | 2017-12-28 | 2018-06-22 | 辽宁福鞍重工股份有限公司 | A kind of method for centrifuging electroslag smelting casting production high ferro brake disc |
| CN108914022A (en) * | 2018-08-02 | 2018-11-30 | 李庆杰 | A kind of preparation method of cast-sintering slider bed platen |
| CN108914119A (en) * | 2018-08-02 | 2018-11-30 | 李庆杰 | A kind of preparation method incuding cladding slider bed platen |
| CN110656283A (en) * | 2018-11-07 | 2020-01-07 | 锦州捷通铁路机械股份有限公司 | High-strength martensitic stainless steel for high-speed railway turnout sliding bed bedplate |
| CN110306384A (en) * | 2019-07-01 | 2019-10-08 | 株洲安成实业有限公司 | A kind of compound slider bed platen of railway switch and preparation method thereof |
| CN110306384B (en) * | 2019-07-01 | 2021-07-20 | 株洲安成实业有限公司 | Composite sliding bed bedplate for railway turnout and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107414057B (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107414057B (en) | The manufacturing method of whole composite casting high-speed railway track switch slider bed platen | |
| CN101530863B (en) | Alloy cast steel roll and preparation method thereof | |
| CN100404152C (en) | High speed steel composite roll and its preparing method | |
| CN104325838B (en) | A kind of high ferro wheel and hot extrusion integral forming method thereof | |
| CN102230130A (en) | Wear-resistant plastic die steel and preparation method thereof | |
| CN105458227A (en) | Centrifugal casting high-boron high-speed steel composite roller and preparing method thereof | |
| CN111575595B (en) | Economical hot-die-casting die steel and preparation method thereof | |
| CN109680212A (en) | The method for improving Cr12MoV static ingot internal soundness | |
| CN105624571A (en) | Super-thick steel plate and production technology thereof | |
| CN114892094B (en) | Pre-hardened mirror plastic die steel and production method thereof | |
| CN102453842A (en) | Special alloy steel and method for high-speed rail turnout integral sliding bedplate | |
| CN107199443A (en) | A kind of autoform combination technological method of non-hardened and tempered steel connecting rod blank | |
| CN104911500B (en) | Manufacturing method of low-temperature wear-resistant carriage | |
| CN104789873A (en) | Rolling mill segmentation wheel and regeneration manufacturing process thereof | |
| CN102001442B (en) | Casting formed blade guide frame and casting forming method thereof | |
| CN102001441B (en) | Cast and formed blade guiding frame and casting forming method thereof | |
| CN101962732A (en) | Austenite nodular cast iron diffuser and production method thereof | |
| CN105369139B (en) | The rollcogging-roll and its manufacture method of a kind of specific alloy half steel material | |
| CN107574362A (en) | A kind of antifriction alloy composite ring and its manufacture method, manufacture device | |
| CN107779773A (en) | Novel non-quenched and tempered plastic die steel plate and preparation method thereof | |
| CN106917045B (en) | Cast the manufacturing method of cold upsetting die of car | |
| CN113373380B (en) | Zirconium-treated economical plastic die steel and production method thereof | |
| CN102121080A (en) | Austenite spheroidal graphite cast iron diffuser and production method thereof | |
| CN102728821B (en) | Process method for electroslag smelting casting ship lift rack | |
| CN105603318B (en) | A kind of processing method of the double hardness tups of low-alloy medium carbon steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |