CN109676089A - A kind of production method of heavy truck track bar bracket - Google Patents

A kind of production method of heavy truck track bar bracket Download PDF

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Publication number
CN109676089A
CN109676089A CN201910066729.1A CN201910066729A CN109676089A CN 109676089 A CN109676089 A CN 109676089A CN 201910066729 A CN201910066729 A CN 201910066729A CN 109676089 A CN109676089 A CN 109676089A
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CN
China
Prior art keywords
bar bracket
track bar
casting
temperature
degrees celsius
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.)
Pending
Application number
CN201910066729.1A
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Chinese (zh)
Inventor
费彦民
费家拾
陶厚顺
张宜福
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ANHUI ANGONG MACHINERY MANUFACTURING Co Ltd
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ANHUI ANGONG MACHINERY MANUFACTURING Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by ANHUI ANGONG MACHINERY MANUFACTURING Co Ltd filed Critical ANHUI ANGONG MACHINERY MANUFACTURING Co Ltd
Priority to CN201910066729.1A priority Critical patent/CN109676089A/en
Publication of CN109676089A publication Critical patent/CN109676089A/en
Pending legal-status Critical Current

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    • 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
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
    • 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
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • C—CHEMISTRY; METALLURGY
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The production method that the present invention discloses a kind of heavy truck track bar bracket, the following steps are included: casting, heat treatment, one-time detection, polishing, processing, secondary detection, electrophoresis, packaging, wherein casting includes production, models coupling, mould coatings, moulding, casting displacement and the cooling cleaning of foamed plastics film.Using lost foam casting track bar bracket, keep track bar bracket integrally formed, improves the stiffness and strength of track bar bracket；Cast blank part is heat-treated, the hardness and mechanical performance of distance rod are improved；Using the blank of lost foam casting track bar bracket, reduce the undesirable generation of blank, improve production efficiency, the dry sand that mold uses can be recycled, reduce costs.

Description

A kind of production method of heavy truck track bar bracket
Technical field
The present invention relates to a kind of production method, the production method of specifically a kind of heavy truck track bar bracket.
Background technique
The effect of distance rod prevents bridge from shifting, and general straight distance rod can only prevent from shifting before and after middle rear axle, and V-type Distance rod can also prevent left and right sidesing shifting, because middle rear axle can in automobile turning in addition to that can prevent from shifting before and after middle rear axle Left and right sidesing shifting can be led to the problem of, leaf spring and tire is caused to generate friction, will lead to tire morning mill when serious or even occurred quick-fried The severe accident of tire；To with the biggish heavy truck of load, to distance rod and track bar bracket, more stringent requirements are proposed；It is existing Track bar bracket in technology carries out production blank using floor moulding and overlay film sand molding, simple process, but blank Bad rate is higher, improves cost, and the blank stiffness and strength that floor moulding and overlay film sand molding make are relatively low, are used for In heavy truck, it be easy to cause accident；Molding sand used in overlay film sand molding is generally non-recyclable and reusable, improves enterprise's production Cost.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of heavy truck track bar bracket, using lost foam casting Track bar bracket keeps track bar bracket integrally formed, improves the stiffness and strength of track bar bracket；Cast blank part is carried out Heat treatment, improves the hardness and mechanical performance of distance rod；Using the blank of lost foam casting track bar bracket, reduce blank Undesirable generation, improves production efficiency, and the dry sand that mold uses can be recycled, reduce costs.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of production method of heavy truck track bar bracket, production method the following steps are included:
One, it casts, using lost foam casting blank.
1) production of foamed plastics film
(1) Expandable polystyrene resin bead is used；
(2) foaming is given, polystyrene resin bead is carried out using hot water to give foaming；
(3) it cures, the polystyrene resin bead for giving foaming is placed on ventilation and is dried, the time of curing is 8- 10 hours；
(4) foaming, the type that the bead after curing is filled into metal die is intracavitary, is heated to 90-100 degrees Celsius, It is cooled down before membrane, so that model is cooled to 80 degrees Celsius hereinafter, after model hardening setting, carry out depanning, carry out mould after depanning Type is dry and dimensionally stable, drying temperature are 40-50 degrees Celsius, and drying time is 5-6 hours.
2) models coupling
Foamed plastics film and dead head models coupling form model cluster.
3) mould coatings
The coating that a layer thickness is 0.5-2 millimeters is applied on the surface of foamed plastics film, is dried under 40-50 degrees Celsius 50-70 minutes.
4) moulding
(1) prepared by casting bed, will put on a vibration table with sandbox, and clamping, and bottom is placed with a thickness of 80-100 millimeters Bed load vibrates 10-15 minutes on the shake table that frequency is 50-60 hertz；
(2) model is placed, the model after placing coating carries out training sand and fixes；
(3) back-up sand is added dry sand, while vibrating 40-60 seconds on the shake table that vibration frequency is 50-60 hertz, makes to do Each position of sand filling model；
(4) sealing sizing, the surface of sandbox are sealed using plastic film, and the vacuum of 0.12 megapascal will be used in sandbox Pump is evacuated, and carries out negative pressure shaping to sand grains.
5) casting displacement
The pouring molten iron into sandbox, model decompose at high temperature, and the temperature of decomposition is 420-480 degrees Celsius, the temperature of molten iron Degree is higher than the temperature decomposed, and model decomposition is gas and liquid, and the process of casting continues uninterruptedly to casting complete, casting process In, the empty part of the gradual substitution model of molten iron in casting process, maintains 3-5 minutes under the negative pressure of 0.12 megapascal.
6) cooling cleaning
After sandbox is cooling, cast member is hung out, casting and dry sand separation.
Two, it is heat-treated
1) it anneals, workpiece is heated to 480-520 degrees Celsius, 1-2 hours is kept the temperature, is cooled down.
2) it quenches, workpiece is heated to 560-520 degrees Celsius, 50-70 minutes is kept the temperature, is placed in room temperature lubricating oil and carries out It is cooling.
3) it is tempered, quenched workpiece is placed under 500-650 degrees Celsius and is kept the temperature, keep the temperature 8-10 hours, then into Row cooling.
Three, one-time detection
The basic size of workpiece is detected, flaw detection processing is carried out to workpiece using defectoscope.
Four, it polishes
Fleshiness, scab tumor to the surface of workpiece etc. are bad to polish.
Five, it processes
It is main for the blank of track bar bracket to be processed as punching.
Working position is processed using numerically-controlled machine tool, smooth plane, the rough surface of plane are milled out using milling cutter Degree is less than 0.08 millimeter；After milling cutter has milled, punched using drill bit；The mounting hole of drill bit punching is carried out using rose reamer Chamfering.
Six, secondary detection
Detect the position degree and out of roundness of hole location, the size requirement of position degree are as follows: -0.025-0.025 millimeters, out of roundness Size requirement are as follows: 0.06-0.08 millimeters.
Seven, electrophoresis
It will test pieces O.K. and be linked into electrophoretic process on electrophoresis line.
Eight, it packs
Packaging is sealed using antirust bag to the part after electrophoresis, while being put into desiccant in hermetic bag.
Further, the density of the Expandable polystyrene resin bead is 15-20Kg/m3。
Further, the hot water temperature for giving foaming is 90-100 degrees Celsius, and foamed time is 15-20 minutes.
Further, the models coupling is bonded using rubber latex.
Further, temperature is used to carry out for 20-25 degrees Celsius of cutting fluid to working position in the process cold But.
Further, in the process, the revolving speed of milling cutter is 600-800r/min, and Tool in Cutting feeding is 18- 25mm/min。
Further, in the process, the revolving speed of drill bit is 800-1100r/min, and the feed speed of cutter is 50- 60mm/min。
Further, in the process, the revolving speed of rose reamer is 200-300r/min, feed speed 12-18mm/ min。
Beneficial effects of the present invention:
1, the production method of track bar bracket of the present invention keeps track bar bracket whole using lost foam casting track bar bracket It is body formed, improve the stiffness and strength of track bar bracket；
2, the production method of track bar bracket of the present invention is heat-treated cast blank part, improves the hardness of distance rod And mechanical performance；Using the blank of lost foam casting track bar bracket, reduce the undesirable generation of blank, improves production effect Rate, the dry sand that mold uses can be recycled, reduce costs.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is process flow chart of the invention.
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 all other Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " aperture ", "upper", "lower", " thickness ", "top", " in ", Indicating positions or the positional relationship such as " length ", "inner", " surrounding ", are merely for convenience of description of the present invention and simplification of the description, without It is that the component of indication or suggestion meaning or element must have a particular orientation, is constructed and operated in a specific orientation, therefore not It can be interpreted as limitation of the present invention.
A kind of production method of heavy truck track bar bracket, production method the following steps are included:
One, it casts, using lost foam casting blank.
1) production of foamed plastics film
(1) use density for 15-20Kg/m3Expandable polystyrene resin bead.
(2) foaming is given, uses temperature to carry out giving foaming to polystyrene resin bead for 90-100 degrees Celsius of hot water, makes Polystyrene resin bead is expanded, and density, dimensional stability and precision that foaming determines mold are given, and foamed time is 15-20 minutes.
(3) it cures, the polystyrene resin bead for giving foaming is placed on ventilation and is dried, is made in bead foam Pressure and ambient pressure balance remove the moisture of surface of beads so that bead be made to have elasticity and reflation ability, curing when Between be 8-10 hours.
(4) foaming, the type that the bead after curing is filled into metal die is intracavitary, is heated to 90-100 degrees Celsius, Bead is expanded, the gap between bead is filled up, makes mutually to merge between particle, forms smooth surface.It is carried out before membrane cold But, model is made to be cooled to 80 degrees Celsius hereinafter, 80 degrees Celsius of softening temperatures for polystyrene resin bead, model hardening setting Afterwards, depanning is carried out, model drying and dimensionally stable are carried out after depanning, drying temperature is 40-50 degrees Celsius, drying time 5-6 Hour.
2) models coupling
Foamed plastics film and dead head models coupling, are bonded together using rubber latex, form model cluster.
3) mould coatings
The coating that a layer thickness is 0.5-2 millimeters is applied on the surface of foamed plastics film, is dried under 40-50 degrees Celsius 50-70 minutes；The purpose of coating is to improve the strength and stiffness of model, improves the anti-molding sand scouring capability of model surface, prevent Add model surface during sand damaged and vibration molding and when negative pressure shaping model deformation, it is ensured that the dimensional accuracy of casting.
4) moulding
(1) prepared by casting bed, will put on a vibration table with sandbox, and clamping, and bottom is placed with a thickness of 80-100 millimeters Bed load vibrates 10-15 minutes on the shake table that frequency is 50-60 hertz.
(2) model is placed, the model after placing coating carries out training sand and fixes.
(3) back-up sand is added dry sand, while vibrating 40-60 seconds on the shake table that vibration frequency is 50-60 hertz, makes to do Sand fills each position of model, and the purpose of vibration is to improve the bulk density of molding sand.
(4) sealing sizing, the surface of sandbox are sealed using plastic film, and the vacuum of 0.12 megapascal will be used in sandbox Pump is evacuated, and carries out negative pressure shaping to sand grains.
5) casting displacement
The pouring molten iron into sandbox, model decompose at high temperature, and the temperature of decomposition is 420-480 degrees Celsius, the temperature of molten iron Degree is higher than the temperature decomposed, and model decomposition is gas and liquid, and the process of casting continues uninterruptedly to casting complete, and molten iron is gradually Substitution model empty part, in casting process, maintained 3-5 minutes under the negative pressure of 0.12 megapascal.
6) cooling cleaning
After sandbox is cooling, cast member is hung out, casting and dry sand separation, dry sand recycling and reusing.
Two, it is heat-treated
1) it anneals, workpiece is heated to 480-520 degrees Celsius, keeps the temperature 1-2 hours, carries out Slow cooling.
2) quench, workpiece be heated to 560-520 degrees Celsius, keeps the temperature 50-70 minutes, be placed on carried out in lubricating oil it is cold But, quenching improves the hardness of workpiece, but workpiece becomes fragile.
3) it is tempered, quenched workpiece is placed under 500-650 degrees Celsius and is kept the temperature, keep the temperature 8-10 hours, then into Row cooling.
Three, one-time detection
The basic size of workpiece is detected, flaw detection processing is carried out to workpiece using defectoscope, unqualified part is carried out Melt down processing.
Four, it polishes
Fleshiness, scab tumor to the surface of workpiece etc. are bad to polish, and the purpose of polishing is facilitating processing, improves knife The service life of tool reduces and casts undesirable generation.
Five, it processes
It is punched when processing main for the blank of track bar bracket.
Working position is processed using numerically-controlled machine tool, uses temperature for 20-25 degrees Celsius of cutting in process Liquid cools down working position, smooth plane is milled out using milling cutter, the surface roughness of plane is less than 0.08 millimeter, milling cutter Revolving speed be 600-800r/min, Tool in Cutting feeding be 18-25mm/min, the revolving speed of milling cutter and chip feeding directly affects table The size of surface roughness；It after milling cutter has milled, is punched using drill bit, the revolving speed of drill bit is 800-1100r/min, cutter Feed speed is 50-60mm/min, and the feed speed of cutter directly affects the position degree in hole, roughness and out of roundness；Chamfering is right The mounting hole of drill bit punching carries out chamfering, and the revolving speed of rose reamer is 200-300r/min, feed speed 12-18mm/min.
Six, secondary detection
Detect the position degree and out of roundness of hole location, the size requirement of position degree are as follows: -0.025-0.025 millimeters, out of roundness Size requirement are as follows: 0.06-0.08 millimeters.
Seven, electrophoresis
It will test pieces O.K. and be linked into electrophoretic process on electrophoresis line.
Eight, it packs
Packaging is sealed using antirust bag to the part after electrophoresis, while being put into desiccant in hermetic bag.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example. Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close Suitable mode combines.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.

Claims (8)

1. a kind of production method of heavy truck track bar bracket, which is characterized in that production method the following steps are included:
One, it casts, using lost foam casting blank；
1) production of foamed plastics film
(1) Expandable polystyrene resin bead is used；
(2) foaming is given, polystyrene resin bead is carried out using hot water to give foaming；
(3) it cures, the polystyrene resin bead for giving foaming is placed on ventilation and is dried, the time of curing is that 8-10 is small When；
(4) foaming, the type that the bead after curing is filled into metal die is intracavitary, is heated to 90-100 degrees Celsius, membrane Before cooled down, so that model is cooled to 80 degrees Celsius hereinafter, after model hardening setting, carry out depanning, it is dry that model is carried out after depanning Dry and dimensionally stable, drying temperature are 40-50 degrees Celsius, and drying time is 5-6 hours；
2) models coupling
Foamed plastics film and dead head models coupling form model cluster；
3) mould coatings
The coating that a layer thickness is 0.5-2 millimeters is applied on the surface of foamed plastics film, drying 50- is carried out under 40-50 degrees Celsius 70 minutes；
4) moulding
(1) prepared by casting bed, will put on a vibration table with sandbox, and clamping, the bed load that bottom is placed with a thickness of 80-100 millimeters, It is vibrated 10-15 minutes on the shake table that frequency is 50-60 hertz；
(2) model is placed, the model after placing coating carries out training sand and fixes；
(3) back-up sand is added dry sand, while vibrating 40-60 seconds on the shake table that vibration frequency is 50-60 hertz, fills out dry sand Each position of mold filling type；
(4) sealing sizing, the surface of sandbox are sealed using plastic film, and the vacuum pumping of 0.12 megapascal will be used in sandbox At vacuum, negative pressure shaping is carried out to sand grains；
5) casting displacement
The pouring molten iron into sandbox, model decompose at high temperature, and the temperature of decomposition is 420-480 degrees Celsius, and the temperature of molten iron is high In the temperature of decomposition, model decomposition is gas and liquid, and the process of casting continues uninterruptedly to casting complete, in casting process, The empty part of the gradual substitution model of molten iron in casting process, maintains 3-5 minutes under the negative pressure of 0.12 megapascal；
6) cooling cleaning
After sandbox is cooling, cast member is hung out, casting and dry sand separation；
Two, it is heat-treated
1) it anneals, workpiece is heated to 480-520 degrees Celsius, 1-2 hours is kept the temperature, is cooled down；
2) quench, workpiece be heated to 560-520 degrees Celsius, keeps the temperature 50-70 minutes, be placed in room temperature lubricating oil carry out it is cold But；
3) it is tempered, quenched workpiece is placed under 500-650 degrees Celsius and is kept the temperature, keep the temperature 8-10 hours, then carry out cold But；
Three, one-time detection
The basic size of workpiece is detected, flaw detection processing is carried out to workpiece using defectoscope；
Four, it polishes
Fleshiness, scab tumor to the surface of workpiece etc. are bad to polish；
Five, it processes
It is main for the blank of track bar bracket to be processed as punching；
Working position is processed using numerically-controlled machine tool, smooth plane is milled out using milling cutter, the surface roughness of plane is small In 0.08 millimeter；After milling cutter has milled, punched using drill bit；The mounting hole of drill bit punching is fallen using rose reamer Angle；
Six, secondary detection
Detect the position degree and out of roundness of hole location, the size requirement of position degree are as follows: -0.025-0.025 millimeters, the size of out of roundness It is required that are as follows: 0.06-0.08 millimeters；
Seven, electrophoresis
It will test pieces O.K. and be linked into electrophoretic process on electrophoresis line；
Eight, it packs
Packaging is sealed using antirust bag to the part after electrophoresis, while being put into desiccant in hermetic bag.
2. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that it is described can The density of hair property polystyrene resin bead is 15-20Kg/m3。
3. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that described to give The hot water temperature of foaming is 90-100 degrees Celsius, and foamed time is 15-20 minutes.
4. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that the mould Type is combined to be bonded using rubber latex.
5. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that described to add Temperature is used to cool down for 20-25 degrees Celsius of cutting fluid to working position during work.
6. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that described to add During work, the revolving speed of milling cutter is 600-800r/min, and Tool in Cutting feeding is 18-25mm/min.
7. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that described to add During work, the revolving speed of drill bit is 800-1100r/min, and the feed speed of cutter is 50-60mm/min.
8. a kind of production method of heavy truck track bar bracket according to claim 1, which is characterized in that described to add During work, the revolving speed of rose reamer is 200-300r/min, feed speed 12-18mm/min.
CN201910066729.1A 2019-01-24 2019-01-24 A kind of production method of heavy truck track bar bracket Pending CN109676089A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111716079A (en) * 2020-03-18 2020-09-29 丽水市久宏精工有限公司 Thrust rod tail end joint process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974762A (en) * 2012-12-24 2013-03-20 昌图县吉派机械铸造有限责任公司 Vacuum evanescent die casting process
CN103147019A (en) * 2013-03-13 2013-06-12 武汉理工大学 Casting method of cold working die module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974762A (en) * 2012-12-24 2013-03-20 昌图县吉派机械铸造有限责任公司 Vacuum evanescent die casting process
CN103147019A (en) * 2013-03-13 2013-06-12 武汉理工大学 Casting method of cold working die module

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨兵兵: "《特种铸造》", 31 August 2010, 中南大学出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111716079A (en) * 2020-03-18 2020-09-29 丽水市久宏精工有限公司 Thrust rod tail end joint process

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