CN107901314A - The casting mold and lubrication block processing method of a kind of wheel rim solid stick - Google Patents
The casting mold and lubrication block processing method of a kind of wheel rim solid stick Download PDFInfo
- Publication number
- CN107901314A CN107901314A CN201711171008.4A CN201711171008A CN107901314A CN 107901314 A CN107901314 A CN 107901314A CN 201711171008 A CN201711171008 A CN 201711171008A CN 107901314 A CN107901314 A CN 107901314A
- Authority
- CN
- China
- Prior art keywords
- wheel rim
- solid stick
- mould
- vacuum outgas
- processing method
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/26—Moulds or cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
- B29C39/38—Heating or cooling
Abstract
The casting mold and lubrication block processing method of a kind of wheel rim solid stick of the present invention, including upper cover plate, two middle moulds, lower dies, the upper cover plate, two middle moulds, lower die composition cavity, sprue gate is provided with the upper cover plate, depositing funnel is fixed with the sprue gate, the size on the depositing funnel top is more than the top of sprue gate size and depositing funnel in cylinder.The present invention is before cast, the vacuum outgas under conditions of heating stirring by mould material, excludes the bubble in mixed system；After completing cast, mould is put into vacuum drying chamber, continues further to exclude the bubble in mixed system using the method for vacuum outgas.By the two steps, reduce the solid lubrication bubble in the block after curing and occur.
Description
Technical field
The present invention relates to a kind of casting mold, the casting mold and lubrication block of more particularly to a kind of wheel rim solid stick add
Work method.
Background technology
When train operation is to small curve section, the wheel rim of outer trackside directive wheel will connect with the gauge angle of rail, gauge face
Touch, since contact is big and is accompanied by impact, while the sliding speed component in Bearing pattern is larger, therefore will cause serious
Wheel-rail wear and tear, while the problems such as can also increase train running resistance, bring noise pollution.
Generally reduce harmful friction between wheel track at present by the way of wheel flange lubricating and reduce abrasion.Wheel flange lubricating refers to
Lubricant is coated on wheel rim surface, so as to reduce wheel-rail friction coefficient, reduces wheel-rail wear and tear.In addition, wheel flange lubricating is also
Train traction energy consumption can be significantly saved, wheel-rail noise is reduced and wheel climbs rail tendency, improve the safety in operation of train.
If divided according to the type using lubricant, wheel flange lubricating can be divided into be moistened using the wet type of lubricating oil or lubricating grease
Two kinds of dry lubrication sliding and using kollag.Dry lubrication technology can effectively solve the fatigue stripping of rail and wheel rim
From chip off-falling problem, critical defect existing for grease lubrication is avoided.Meanwhile kollag has good environmental adaptability, adhesive force
By force, easily film forming, the advantages of anti-extreme pressure and long-term effect are good.Lubricated relative to wet type, dry lubrication because having many unique advantages,
Have become the developing direction of following wheel flange lubricating technology.
As shown in Figure 1, in dry lubrication, kollag is often processed to have cone boss and conical socket
Bulk, in use, being plugged in together before and after several solid sticks, after slider wear is moistened for one, grafting is another therewith
A lubrication block can be kept up with any time, make greasing continuous.
The content of the invention
The main object of the present invention is to solve technical problem of the prior art, there is provided a kind of accurate size, cost are low
The casting mold of honest and clean wheel rim solid stick.
It is a further object to provide a kind of processing method of wheel rim solid stick.
To achieve the above object, the technical scheme is that：
A kind of casting mold of wheel rim solid stick, including upper cover plate, two middle moulds, lower dies, the upper cover plate, two
Middle mould, lower die composition cavity, are provided with sprue gate on the upper cover plate, depositing funnel, institute are fixed with the sprue gate
The size for stating depositing funnel top is more than the top of sprue gate size and depositing funnel in cylinder.
Further, it is provided with riser on the upper cover plate.
Further, the size of the cavity and wheel rim solid stick are changed into actual size kissing after solid-state by liquid
Close.
Further, the cavity corresponds to the length of wheel rim solid stick cone boss and is longer than wheel rim solid stick taper
Boss 1-2mm.
The present invention another technical solution be：
A kind of processing method of wheel rim solid stick, includes the following steps：
Step 1, heating stirring and vacuum outgas are carried out to mould material；
Step 2, is poured into a mould；
Step 3, to mould heat simultaneously vacuum outgas；
Step 4, the demoulding.
Further, a step is increased before the step 1, which is cleaning mold cavity surface, in cavity table
Face smearing release agent.
Further, in the step 1, the mould material for thermosetting resin, solid lubricating component, accelerating agent and
Curing agent, thermosetting resin is placed in container and carries out heating stirring and vacuum outgas, stops vacuum after certain time and takes off
Gas, by solid lubricating component successively, at the uniform velocity add container, while keep heating and stir, vacuum outgas is opened after the completion of addition,
Stop vacuum outgas after a certain period of time, accelerating agent is added into container, continue to heat and stir, vacuum is opened after the completion of addition and is taken off
Gas, stops vacuum outgas after a certain period of time, and curing agent is added container, continues to heat and stirs, vacuum is opened after the completion of addition
Degassing.
Further, in the step 2, mould material is flowed into the cavity of mould from the sprue gate of mould, and is gradually filled
Full whole mold cavity, overflows at the riser from mould, continues to pour into mould material into depositing funnel at this time, make cast
Material at least fills the half height of depositing funnel.
Further, mould material is made to be completely filled with mold cavity using ultrasonic vibration method or air pressurized method.
Further, mould is positioned in vacuum drying chamber to the simultaneously vacuum outgas that is heating and curing, it is cured using heat stepwise
Method is heating and curing mould material.
To sum up content, the casting mold and lubrication block processing method of a kind of wheel rim solid stick of the present invention, tool
Have the following advantages：
(1), the cavity dimension of mould is not the drawing size of solid stick, but considers the mixed of solid stick
Zoarium system is changed into the actual shrinking percentage after solid-state by liquid, meets the high accurate in size of drawing requirement so as to prepare
Solid stick.
(2), the mould material of solid stick is poured into mold cavity by depositing funnel, upper due to depositing funnel
End opening size is larger, therefore is convenient for pouring practice.In addition, the upper end of depositing funnel is in cylinder, easy to connect high pressure
Tracheae, implements air pressurized.
(3), mould material is made to be full of whole mold cavity using ultrasonic vibration method or air pressurized method, it is ensured that after curing
Solid lubrication block structure is closely knit, smooth appearance, occurs without surface defect.
(4), before cast, the vacuum outgas under conditions of heating stirring by mould material, excludes the gas in mixed system
Bubble；After completing cast, mould is put into vacuum drying chamber, continues further to exclude mixed system using the method for vacuum outgas
In bubble.By the two steps, reduce the solid lubrication bubble in the block after curing and occur.
(5), more mixed system can be remained in depositing funnel, makes cast using ultrasonic vibration or gas pressurized
During material is full of mold cavity, remaining mould material can flow into mold cavity in depositing funnel, fill in cavity
Gap that may be present.
Brief description of the drawings
Fig. 1 is the structure diagram of wheel rim solid stick of the present invention；
The sectional view of Fig. 2 inventive dies.
As depicted in figs. 1 and 2, upper cover plate 1, middle mould 2, lower die 3, sprue gate 4, riser 5, depositing funnel 6.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Fig. 2, a kind of casting mold of wheel rim solid stick, including upper cover plate 1, two middle mould 2, lower die 3, on
1, two middle mould 2 of cover board, lower die 3 form cavity, and cavity shape matches with wheel rim solid stick, wherein, two middle moulds 2 are logical
Two positioning finger settings are crossed, and are fixed by four bolts.Lower die 3 is positioned by two positioning pins and middle mould 2, and passes through four
Bolt is fixed on middle mould 2.Upper cover plate 1 is directly fixed on middle mould 2 without positioning by four bolts.
Sprue gate 4 and riser 5 are provided with upper cover plate 1, depositing funnel 6 is fixed with sprue gate 4.Plug hole 4 adds
Work has internal thread, and 6 lower end of depositing funnel is machined with external screw thread, and depositing funnel 6, which is connected through a screw thread, to be fixed in plug hole 4.Pour
The size on 6 top of note hopper is more than 4 size of sprue gate, is convenient for pouring practice.The top of depositing funnel 6 is in cylinder, just
In connection high-pressure air pipe, implement air pressurized.
Actual size matches after the size of cavity is changed into solid-state with wheel rim solid stick by liquid.The cavity of mould
Size is not the drawing size of solid stick, but the mixed system for considering solid stick is changed into solid-state by liquid
Actual shrinking percentage afterwards.Specific practice is：The cavity of mould, Ran Hougen are gone out according to the drawing dimensioned of solid stick first
Solid stick, the actual size at each position of measurement solid stick, by contrasting solid lubrication are processed according to pouring technology
The drawing Size calculation of block goes out the reducing and expansion ratio value at each position, finally according to the reducing and expansion ratio value at each position of solid stick
The cavity dimension of mould is corrected, finally obtains the mold cavity size for considering the actual shrinking percentage of solid stick.
Due to being designed with sprue gate 4 and riser 5, the cone boss head of the solid stick obtained after the demoulding on mould
Portion is it is possible that not clean phenomenon, therefore cavity corresponds to the length of wheel rim solid stick cone boss and is longer than wheel rim solid
Block cone boss 1-2mm is lubricated, to be cut to the cone boss head after the demoulding, so as to obtain smooth appearance and ruler
Very little accurate cone boss.
The mould material of wheel rim solid stick of the present invention is thermosetting resin, solid lubricating component, accelerating agent and curing
Agent, wherein thermosetting resin can be phenolic resin, epoxy resin, vinyl ester resin, unsaturated polyester resin, furans tree
Fat, amino resins, acrylic resin, organic siliconresin etc..Solid lubricating component is molybdenum disulfide, graphite, copper powder, aluminium powder, cunning
Mountain flour, carbon fiber, glass fibre, paraffin, polytetrafluoroethylene powder, tungsten disulfide, lead oxide, silica, alundum (Al2O3), two
Titanium oxide, boron nitride, calcium carbonate, carborundum, mica powder, clay and starching clay etc., wherein, the diameter of particle added should be
Between 0.5-10 μm.
A kind of processing method of wheel rim solid stick, includes the following steps：
Step 1, cleaning mold cavity surface, in mold cavity surface smearing release agent.Will with organic solvents such as acetone, alcohol
The mold cavity surface of casting mold is cleaned out, and removes greasy dirt, dust, remaining releasing agent and the solid lubrication on mold cavity surface
Material etc..With hairbrush, in mold cavity surface smear releasing agent, (such as silicone release, fluoropolymer releasing agent, wax class demould
Agent and polyethers releasing agent etc.), it is ensured that brush uniformly, and stand at room temperature, dry releasing agent, dried releasing agent film
Layer thickness is at 5-20 μm.
Step 2, heating stirring and vacuum outgas are carried out to mould material.
It is placed in specifically, weighing a certain amount of thermosetting resin in three-necked flask, three-necked flask is put into electric jacket, with
50-80 DEG C of heated at constant temperature.The stirring rod of mechanical agitator is deep into thermosetting resin from a bottleneck of flask, and will
The bottle sealing, continued mechanical stirring.Air bleeding valve is installed on another bottleneck of three-necked flask, and using the bottleneck as charging
Mouthful.Vacuum suction device is installed on the 3rd bottleneck of three-necked flask, Fruit storage, vacuum are carried out to thermosetting resin
Spend for 0.07-0.09Mpa, degassing time 10-60min, to exclude the gas componant in thermosetting resin.
Stop vacuum outgas, open the air bleeding valve of three-necked flask, by solid lubricating component successively, at the uniform velocity add thermosetting property tree
Mixed system is formed in fat, while keeps heating and stirs, each solid lubricating component is well-dispersed in mixed system.
Air bleeding valve is closed, continues to heat and stirs, opens vacuum outgas, degassing time 1-2h, to exclude the gas in mixed system
Component.
Stop vacuum outgas, open air bleeding valve, accelerating agent (such as cobalt naphthenate, divinyl are slowly added into mixed system
Triamine, cobalt iso-octoate, copper naphthenate and calcium iso-octoate etc.), continue to heat and stir, accelerating agent is well-dispersed in mixed system
In.After treating that accelerating agent adds, air bleeding valve is closed, opens vacuum outgas, degassing time 1-5min.
Stop vacuum outgas, open air bleeding valve, curing agent (such as methyl ethyl ketone peroxide, mistake are slowly added into mixed system
Aoxidize dibenzoyl, hexamethylenetetramine and p-hydroxybenzenyl sulfonate etc.), continue to heat and stir, be well-dispersed in curing agent
In mixed system.After to be solidified dose adds, air bleeding valve is closed, opens vacuum outgas, degassing time 5-10min.
Step 3, is poured into a mould.Stop vacuum outgas, open air bleeding valve, remove vacuum suction device and mechanical agitation dress
Put, mixed system is poured into the depositing funnel 6 of mould.Mixed system is flowed into the cavity of mould from the sprue gate 4 of mould, and
Whole mold cavity is gradually filled with, is overflowed at the riser 5 from mould.Continue to pour into mixture into depositing funnel 6 at this time
System, makes mixed system at least fill the half height of depositing funnel 6.
Mixed system is set to be completely filled with mold cavity using ultrasonic vibration method or air pressurized method.If shaken using ultrasound
Dynamic method, then mould is directly placed into ultrasonic vibration machine, ultrasonic vibration 5-10min.If using air pressurized method, then will
Depositing funnel 6 connects high-pressure air pipe, applies the air pressure of 0.5-1.5Mpa, until mixed system continues from the riser 5 of mould
Untill during spilling.
More mixed system can be remained in depositing funnel 6, makes cast material using ultrasonic vibration or gas pressurized
During material is full of mold cavity, remaining mould material can flow into mold cavity in depositing funnel 6, and filling can in cavity
Gap existing for energy.Mould material is set to be full of whole mold cavity using ultrasonic vibration method or air pressurized method, it is ensured that to cure
Rear solid lubrication block structure is closely knit, smooth appearance, occurs without surface defect.
Step 4, to mould heat simultaneously vacuum outgas.Mould is positioned in vacuum drying chamber, vacuum is
0.07-0.09Mpa, in heat curing process, continues further to exclude the gas in mixed system using the method for vacuum outgas
Bubble.Ensure that mixed system reaction is good using the method for temperature programmed control.It is general to use according to the curing characteristic of different mixed systems
The cured method of heat stepwise is heating and curing mixed system (for example, 110 DEG C first insulation 2h, then 130 DEG C of insulations
2h, last 150 DEG C of insulations 2h).After heat cycles, vacuum drying chamber is closed, mould is naturally cooled to less than 40 DEG C.
Step 5, the demoulding.Mould is taken out, four bolts on upper cover plate 1 is removed, removes upper cover plate 1.Remove in lower die 3
Four bolts and two positioning pins, remove lower die 3.Four bolts and two positioning pins on two middle moulds 2 are removed, will
Two middle moulds 2 separate, and take out solid stick.According to the drawing size of solid stick cone boss, cut off using cutting machine
The excess stock on cone boss head, so as to obtain smooth appearance and accurate in size solid stick.
Before cast, the vacuum outgas under conditions of heating stirring by mould material, excludes the bubble in mixed system；It is complete
Into after cast, mould is put into vacuum drying chamber, continues further to exclude in mixed system using the method for vacuum outgas
Bubble.By the two steps, reduce the solid lubrication bubble in the block after curing and occur.
As described above, the plan content with reference to given by attached drawing, can derive similar technical solution.In every case it is not de-
From the content of technical solution of the present invention, any simple modification made according to technical spirit of the invention to above example, etc.
With change and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
- A kind of 1. casting mold of wheel rim solid stick, it is characterised in that：Including upper cover plate, two middle moulds, lower dies, it is described on Cover board, two middle moulds, lower die composition cavity, are provided with sprue gate on the upper cover plate, are fixed with and pour at the sprue gate Note hopper, the size on the depositing funnel top are more than the top of sprue gate size and depositing funnel in cylinder.
- A kind of 2. casting mold of wheel rim solid stick according to claim 1, it is characterised in that：In the upper cover plate On be provided with riser.
- A kind of 3. casting mold of wheel rim solid stick according to claim 1, it is characterised in that：The ruler of the cavity It is very little solid-state is changed into by liquid with wheel rim solid stick after actual size match.
- A kind of 4. casting mold of wheel rim solid stick according to claim 3, it is characterised in that：The cavity corresponds to The length of wheel rim solid stick cone boss is longer than wheel rim solid stick cone boss 1-2mm.
- 5. a kind of processing method of wheel rim solid stick, it is characterised in that include the following steps：Step 1, heating stirring and vacuum outgas are carried out to mould material；Step 2, is poured into a mould；Step 3, to mould heat simultaneously vacuum outgas；Step 4, the demoulding.
- A kind of 6. processing method of wheel rim solid stick according to claim 5, it is characterised in that：In the step 1 Increase a step before, which is cleaning mold cavity surface, in mold cavity surface smearing release agent.
- A kind of 7. processing method of wheel rim solid stick according to claim 5, it is characterised in that：In the step 1 In, the mould material is thermosetting resin, solid lubricating component, accelerating agent and curing agent, and thermosetting property tree is placed in container Fat simultaneously carries out heating stirring and vacuum outgas, stops vacuum outgas after certain time, and solid lubricating component successively, is at the uniform velocity added Enter container, while keep heating and stir, vacuum outgas is opened after the completion of addition, stops vacuum outgas after a certain period of time, will promote Container is added into agent, continues to heat and stirs, vacuum outgas is opened after the completion of addition, stop vacuum outgas after a certain period of time, will Curing agent adds container, continues to heat and stirs, vacuum outgas is opened after the completion of addition.
- A kind of 8. processing method of wheel rim solid stick according to claim 5, it is characterised in that：In the step 2 In, mould material is flowed into the cavity of mould from the sprue gate of mould, and is gradually filled with whole mold cavity, until from mould Overflowed at riser, continue to pour into mould material into depositing funnel at this time, mould material is at least filled the half of depositing funnel Highly.
- A kind of 9. processing method of wheel rim solid stick according to claim 8, it is characterised in that：Using ultrasonic vibration Method or air pressurized method make mould material be completely filled with mold cavity.
- A kind of 10. processing method of wheel rim solid stick according to claim 5, it is characterised in that：Mould is placed Be heating and curing simultaneously vacuum outgas in vacuum drying chamber, mould material heat using heat stepwise cured method solid Change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171008.4A CN107901314A (en) | 2017-11-22 | 2017-11-22 | The casting mold and lubrication block processing method of a kind of wheel rim solid stick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171008.4A CN107901314A (en) | 2017-11-22 | 2017-11-22 | The casting mold and lubrication block processing method of a kind of wheel rim solid stick |
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| Publication Number | Publication Date |
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| CN107901314A true CN107901314A (en) | 2018-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711171008.4A Pending CN107901314A (en) | 2017-11-22 | 2017-11-22 | The casting mold and lubrication block processing method of a kind of wheel rim solid stick |
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| CN (1) | CN107901314A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109013742A (en) * | 2018-07-06 | 2018-12-18 | 苏州市金翔钛设备有限公司 | A kind of processing technology of copper composite ti pipe material |
| CN111073745A (en) * | 2019-12-31 | 2020-04-28 | 中山绿材新材料科技有限公司 | Solid lubricating material for photosensitive drum and preparation method thereof |
| CN111979021A (en) * | 2020-07-29 | 2020-11-24 | 黄山明杰新材料有限公司 | Polyester resin solid lubricating block and preparation method thereof |
| CN113665046A (en) * | 2021-08-20 | 2021-11-19 | 宁波精挚模具有限公司 | Resin mold and molding process thereof |
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| CN204309182U (en) * | 2014-11-16 | 2015-05-06 | 扬州尼尔工程塑料有限公司 | The metal-cored sealed type mould of integrated metal coil MC nylon wheel |
| CN106883917A (en) * | 2017-03-30 | 2017-06-23 | 安徽工业大学 | A kind of polyester resin solid stick and preparation method thereof |
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| CN204309182U (en) * | 2014-11-16 | 2015-05-06 | 扬州尼尔工程塑料有限公司 | The metal-cored sealed type mould of integrated metal coil MC nylon wheel |
| CN106883917A (en) * | 2017-03-30 | 2017-06-23 | 安徽工业大学 | A kind of polyester resin solid stick and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013742A (en) * | 2018-07-06 | 2018-12-18 | 苏州市金翔钛设备有限公司 | A kind of processing technology of copper composite ti pipe material |
| CN111073745A (en) * | 2019-12-31 | 2020-04-28 | 中山绿材新材料科技有限公司 | Solid lubricating material for photosensitive drum and preparation method thereof |
| CN111979021A (en) * | 2020-07-29 | 2020-11-24 | 黄山明杰新材料有限公司 | Polyester resin solid lubricating block and preparation method thereof |
| CN113665046A (en) * | 2021-08-20 | 2021-11-19 | 宁波精挚模具有限公司 | Resin mold and molding process thereof |
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Application publication date: 20180413 |