CN109967696A - A kind of subway urban rail brake system cylinder casting technique - Google Patents
A kind of subway urban rail brake system cylinder casting technique Download PDFInfo
- Publication number
- CN109967696A CN109967696A CN201910096202.3A CN201910096202A CN109967696A CN 109967696 A CN109967696 A CN 109967696A CN 201910096202 A CN201910096202 A CN 201910096202A CN 109967696 A CN109967696 A CN 109967696A
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- product
- brake system
- urban rail
- rail brake
- casting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of subway urban rail brake system cylinder casting techniques, specifically includes the following steps: S1, mold design: going out basic mold according to conventional brake tank design, increase by 4 insulated feeders at the top of 4 boss, reinforce feeding, increase satrain relief at product thin-walled, to the chill water of distal end be overflowed to outside product, S2, mulling: yellow ground and resin are added in sand mixer, incorporation time is 20-30s, and the present invention relates to cylinder casting technical fields.The subway urban rail brake system cylinder casting technique, it can be achieved to increase by four insulated feeders at the top of four boss when moulding, reinforce feeding, to eliminate internal flaw, increases satrain relief at product thin-walled, the chill water of distal end is overflowed to outside product, the cold shut defect at product thin-walled is completely eliminated, the yield rate of product is greatly enhanced, casting step is simple and easy, the relatively conventional casting cost of cost is lower, convenient for promoting.
Description
Technical field
The present invention relates to cylinder casting technical field, specially a kind of subway urban rail brake system cylinder casting work
Skill.
Background technique
Subway is a kind of form of railway transportation, refers to the City Rail Transit System based on running in underground, i.e. " subway
The abbreviation in road " or " subway ", subway be cover the various undergrounds in urban area and ground right of way is proprietary, high density, Gao Yun
The City Rail Transit System of amount, the braking system of subway be it is vital, metro braking system mainly by power supply device, control
Device, transmission device and 4 part of brake composition processed, the main function of braking system are that the subway in traveling is made to slow down even
Parking, checking cylinder is core component in braking system, and checking cylinder is by brake cylinder head, piston, piston rod, leather cup and release spring etc.
Composition when allowing compressed air into checking cylinder, is advanced the plunger through a set of base apparatus and plays braking by the effect of triple valve
Effect.
Existing subway urban rail brake system cylinder casting technique, basic wall thickness 8mm of checking cylinder or so, wall thickness compares
It is thin, in running gate system remote location, it is easy to produce cold shut defect, there is the boss of assembly at 4 in product upper surface, and size is with respect to it
His position is thicker big, can not feeding, when thread mill drilling is easy to appear internal flaw, causes checking cylinder to be scrapped, casting step
It is many and diverse.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of subway urban rail brake system cylinder casting technique,
Solve subway urban rail brake system cylinder casting technique produce cylinder body wall ratio is relatively thin, in running gate system distal end position
It sets, is easy to produce cold shut defect, when thread mill drilling is easy to appear internal flaw, causes checking cylinder to be scrapped, procedure of processing is many and diverse
The problem of.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of subway urban rail braking system controlling
Dynamic cylinder casting technique, specifically includes the following steps:
S1, mold design: going out basic mold according to conventional brake tank design, increases by 4 heat preservations at the top of 4 boss and emits
Mouthful, reinforce feeding, increases satrain relief at product thin-walled, so that the chill water of distal end be overflowed to outside product；
S2, mulling: yellow ground and resin being added in sand mixer, incorporation time 20-30s, are added and are fixed after mixing
Agent continuess to mix 30-40s, obtains mulling；
S3, appearance: the mulling produced in S2 is inserted to the mould inside produced in S1, to constitute casting mold；
S4, pre- hot lacquering；Casting mold in S3 is assembled, first the casting mold after assembling is preheated, preheating temperature 100-180
DEG C, preheating time 6-8h is painted in mo(U)ld face using paint spraying machine, is carried out after the completion of spray painting to paint vehicle after the completion of preheating
Drying, drying temperature control is at 50-100 DEG C, soaking time 40-60min
S5, molten iron preparation: it selects gray iron and ferrosilicon as raw material, melting is carried out to it, molten iron is obtained, protects molten iron temperature
It holds at 1000-1100 DEG C；
S6, molten iron pour: the molten iron temperature prepared in S5 being promoted to 1200-1300 DEG C, reaches predetermined value to temperature
Afterwards, molten iron is slowly added in casting mold, duration of pouring 20-30s keeps the temperature it after the completion of pouring, soaking time control
System is in 30-40min；
S7, cylinder body molding: mold die is removed, molding cylinder body is obtained；
S8, working process: deburring is carried out to the molding cylinder body in S7 using deburring equipment, using grinding apparatus to S7
In molding cylinder body carry out corner polishing, the molding cylinder body in S7 is polished using polissoir, is finished to sanding and polishing
Afterwards, finished product brake cylinder casing is obtained.
Preferably, yellow ground need to be heated to 25-35 DEG C before sand mixer is added in yellow ground and resin in the step S2,
Resin need to be heated to 40-50 DEG C, the ratio that yellow ground and resin are added is 10 to 1.
Preferably, coating is mixed together by silica flour, diatomite and resin sand in the step S4.
Preferably, shot-blast cleaning machine, surface roughness after polishing are being used using polissoir in the step S8
Control is below 12.5.
The invention also discloses a kind of subway urban rail brake system cylinder casting tooling, including mould shaping plate, product,
Insulated feeder, running channel, gate stick and satrain relief, the surface of the mould shaping plate are fixedly connected with product, the table of the product
Face offers insulated feeder, and the quantity of the insulated feeder is four.
Preferably, the side of the product offers running channel, and the bottom of the running channel is communicated with gate stick.
Preferably, satrain relief is offered at the top of the product surface.
(3) beneficial effect
The present invention provides a kind of subway urban rail brake system cylinder casting techniques.Have compared with prior art with
It is lower the utility model has the advantages that
(1), the subway urban rail brake system cylinder casting technique, passes through S1, mold design: according to conventional brake cylinder
Body designs basic mold, increases by 4 insulated feeders at the top of 4 boss, reinforces feeding, increases overflow at product thin-walled and emits
Mouthful, to the chill water of distal end be overflowed to outside product, S2, mulling: yellow ground and resin being added in sand mixer, when mixing
Between be 20-30s, fixative is added after mixing, continuess to mix 30-40s, obtains mulling, S3, appearance: by what is produced in S2
The mould inside produced in mulling filling S1 eliminates internal flaw, it can be achieved that when moulding is convex at four to constitute casting mold
Increase by four insulated feeders at the top of platform, reinforce feeding, to eliminate internal flaw, increases satrain relief at product thin-walled, it will be remote
The chill water at end overflows to outside product, completely eliminates the cold shut defect at product thin-walled, greatly enhances product
Yield rate.
(2), the subway urban rail brake system cylinder casting technique, passes through S4, pre- hot lacquering；To casting mold in S3 into
Row assembling, first preheats the casting mold after assembling, and preheating temperature is 100-180 DEG C, preheating time 6-8h, after the completion of preheating,
It is painted, paint vehicle is dried after the completion of spray painting, drying temperature controls the heat preservation at 50-100 DEG C in mo(U)ld face using paint spraying machine
Time is 40-60min, S5, molten iron preparation: selects gray iron and ferrosilicon as raw material, carries out melting to it, obtain molten iron, make iron
Coolant-temperature gage is maintained at 1000-1100 DEG C, and S7, cylinder body molding: mold die is removed, molding cylinder body is obtained, casting step is simply easy
Row, the relatively conventional casting of cost is lower, convenient for promoting.
Detailed description of the invention
Fig. 1 is the schematic diagram of present invention casting tool structure.
In figure, 1- mould shaping plate, 2- product, 3- insulated feeder, 4- running channel, 5- gate stick, 6- satrain relief.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of technical solution: a kind of subway urban rail brake system cylinder body casting
Technique is made, specifically includes the following steps:
S1, mold design: going out basic mold according to conventional brake tank design, increases by 4 heat preservations at the top of 4 boss and emits
Mouthful, reinforce feeding, increases satrain relief at product thin-walled, so that the chill water of distal end be overflowed to outside product；
S2, mulling: yellow ground and resin being added in sand mixer, incorporation time 20-30s, are added and are fixed after mixing
Agent continuess to mix 30-40s, obtains mulling；
S3, appearance: the mulling produced in S2 is inserted to the mould inside produced in S1, to constitute casting mold；
S4, pre- hot lacquering；Casting mold in S3 is assembled, first the casting mold after assembling is preheated, preheating temperature 100-180
DEG C, preheating time 6-8h is painted in mo(U)ld face using paint spraying machine, is carried out after the completion of spray painting to paint vehicle after the completion of preheating
Drying, drying temperature control is at 50-100 DEG C, soaking time 40-60min；
S5, molten iron preparation: it selects gray iron and ferrosilicon as raw material, melting is carried out to it, molten iron is obtained, protects molten iron temperature
It holds at 1000-1100 DEG C；
S6, molten iron pour: the molten iron temperature prepared in S5 being promoted to 1200-1300 DEG C, reaches predetermined value to temperature
Afterwards, molten iron is slowly added in casting mold, duration of pouring 20-30s keeps the temperature it after the completion of pouring, soaking time control
System is in 30-40min；
S7, cylinder body molding: mold die is removed, molding cylinder body is obtained；
S8, working process: deburring is carried out to the molding cylinder body in S7 using deburring equipment, using grinding apparatus to S7
In molding cylinder body carry out corner polishing, the molding cylinder body in S7 is polished using polissoir, is finished to sanding and polishing
Afterwards, finished product brake cylinder casing is obtained.
In the present invention, in step S2 before sand mixer is added in yellow ground and resin, yellow ground need to be heated to 25-35 DEG C, needed
Resin is heated to 40-50 DEG C, the ratio that yellow ground and resin are added is 10 to 1.
In the present invention, coating is mixed together by silica flour, diatomite and resin sand in step S4.
In the present invention, shot-blast cleaning machine, surface roughness control after polishing are being used using polissoir in step S8
System is below 12.5.
The invention also discloses a kind of subway urban rail brake system cylinder casting toolings, including mould shaping plate 1, product
2, insulated feeder 3, running channel 4, gate stick 5 and satrain relief 6, the surface of mould shaping plate 1 are fixedly connected with product 2, the table of product 2
Face offers insulated feeder 3, and the quantity of insulated feeder 3 is four, and the side of product 2 offers running channel 4, and the bottom of running channel 4 connects
It is connected with gate stick 5, product offers satrain relief 6 at the top of 2 surface.
Product 2 is processed integrally with mould shaping plate 1, and running channel 4 is fixed on template with 4 M16 screws, gate stick 5 and overflow
Flow riser 6 be it is movable, moulding when, is fixed by the positioning on mould shaping plate 1, and insulated feeder 3 on product 2 by determining
Position is placed on product 2 before moulding.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of subway urban rail brake system cylinder casting technique, it is characterised in that: specifically includes the following steps:
S1, mold design: going out basic mold according to conventional brake tank design, increases by 4 insulated feeders at the top of 4 boss,
Reinforce feeding, increases satrain relief at product thin-walled, so that the chill water of distal end be overflowed to outside product.
S2, mulling: yellow ground and resin are added in sand mixer, and fixative is added after mixing in incorporation time 20-30s, after
Continuous mixing 30-40s, obtains mulling；
S3, appearance: the mulling produced in S2 is inserted to the mould inside produced in S1, to constitute casting mold；
S4, pre- hot lacquering；Casting mold in S3 is assembled, first the casting mold after assembling is preheated, preheating temperature is 100-180 DEG C,
Preheating time is 6-8h, after the completion of preheating, is painted using paint spraying machine in mo(U)ld face, is dried after the completion of spray painting to paint vehicle
Dry, drying temperature control is at 50-100 DEG C, soaking time 40-60min；
S5, molten iron preparation: it selects gray iron and ferrosilicon as raw material, melting is carried out to it, molten iron is obtained, is maintained at molten iron temperature
1000-1100℃；
S6, molten iron pour: the molten iron temperature prepared in S5 promoted to 1200-1300 DEG C, it, will after temperature reaches predetermined value
Molten iron is slowly added in casting mold, and duration of pouring 20-30s keeps the temperature it after the completion of pouring, and soaking time control exists
30-40min；
S7, cylinder body molding: mold die is removed, molding cylinder body is obtained；
S8, working process: deburring is carried out to the molding cylinder body in S7 using deburring equipment, using grinding apparatus in S7
Form cylinder body carry out corner polishing, the molding cylinder body in S7 is polished using polissoir, to sanding and polishing after, obtain
Finished product brake cylinder casing.
2. a kind of subway urban rail brake system cylinder casting technique according to claim 1, it is characterised in that: described
In step S2 before sand mixer is added in yellow ground and resin, yellow ground need to be heated to 25-35 DEG C, resin need to be heated to 40-50
DEG C, the ratio that yellow ground and resin are added is 10 to 1.
3. a kind of subway urban rail brake system cylinder casting technique according to claim 1, it is characterised in that: described
Coating is mixed together by silica flour, diatomite and resin sand in step S4.
4. a kind of subway urban rail brake system cylinder casting technique according to claim 1, it is characterised in that: described
Shot-blast cleaning machine is being used using polissoir in step S8, surface roughness control is below 12.5 after polishing.
5. a kind of subway urban rail brake system cylinder casting tooling, including mould shaping plate (1), product (2), insulated feeder
(3), running channel (4), gate stick (5) and satrain relief (6), it is characterised in that: the surface of the mould shaping plate (1) is fixedly connected with
The surface of product (2), the product (2) offers insulated feeder (3), and the quantity of the insulated feeder (3) is four.
6. a kind of subway urban rail brake system cylinder casting tooling according to claim 5, it is characterised in that: described
The side of product (2) offers running channel (4), and the bottom of the running channel (4) is communicated with gate stick (5).
7. a kind of subway urban rail brake system cylinder casting tooling according to claim 5, it is characterised in that: described
Satrain relief (6) are offered at the top of product (2) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910096202.3A CN109967696A (en) | 2019-01-31 | 2019-01-31 | A kind of subway urban rail brake system cylinder casting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910096202.3A CN109967696A (en) | 2019-01-31 | 2019-01-31 | A kind of subway urban rail brake system cylinder casting technique |
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| Publication Number | Publication Date |
|---|---|
| CN109967696A true CN109967696A (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910096202.3A Pending CN109967696A (en) | 2019-01-31 | 2019-01-31 | A kind of subway urban rail brake system cylinder casting technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985682A (en) * | 2022-06-08 | 2022-09-02 | 荃胜精密机械工业（中山）有限公司 | Method for improving shrinkage cavity of golf head casting |
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| CN203992244U (en) * | 2014-04-29 | 2014-12-10 | 四川省宜宾普什铸造有限公司 | The casting sand type of engine cylinder-body foundry goods |
| CN105750502A (en) * | 2016-04-20 | 2016-07-13 | 浙江省机电设计研究院有限公司 | Pouring system device and pouring method for iron based sand coated cast brake drums |
| CN107671237A (en) * | 2017-09-28 | 2018-02-09 | 繁昌县琪鑫铸造有限公司 | A kind of automobile brake master cylinder cylinder casting technique |
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2019
- 2019-01-31 CN CN201910096202.3A patent/CN109967696A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704093A (en) * | 2009-11-05 | 2010-05-12 | 遵义拓特机械有限公司 | Method for casting pump body of single-stage double-suction centrifugal pump |
| CN101890479A (en) * | 2010-07-16 | 2010-11-24 | 吴江市液铸液压件铸造有限公司 | Cast iron cylinder block casting process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114985682A (en) * | 2022-06-08 | 2022-09-02 | 荃胜精密机械工业（中山）有限公司 | Method for improving shrinkage cavity of golf head casting |
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Application publication date: 20190705 |
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