CN105478764B - Forging die 3D printing increases material welding and restoring process - Google Patents

Forging die 3D printing increases material welding and restoring process Download PDF

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Publication number
CN105478764B
CN105478764B CN201510911896.3A CN201510911896A CN105478764B CN 105478764 B CN105478764 B CN 105478764B CN 201510911896 A CN201510911896 A CN 201510911896A CN 105478764 B CN105478764 B CN 105478764B
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China
Prior art keywords
cavity
welding
layer
forging die
restoring process
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CN201510911896.3A
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CN105478764A (en
Inventor
张运军
邓庆文
刘胜春
陈天赋
邵光保
周明
左长兵
权开峰
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Hubei Tri Ring Forging Co Ltd
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Hubei Tri Ring Forging Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/68—Cleaning or washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/80—Data acquisition or data processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/007—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/64—Treatment of workpieces or articles after build-up by thermal means
    • 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
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

The present invention relates to forging mold technical fields, more particularly to a kind of forging die 3D printing increases material welding and restoring process, by clear up cavity, scanning modeling, increase material reparation, it is accurate repair, after removing the metals such as fatigue layer, according to the comparison of cavity and target cavity, successively increase material printing, pocket machining to size and target cavity is similar, then further refine using wlding, to obtain target cavity, the processing technology compared with prior art, can save welding, increase die life.

Description

Forging die 3D printing increases material welding and restoring process
Technical field
The present invention relates to forging mold technical fields, increase material welding and restoring process more particularly to a kind of forging die 3D printing.
Background technology
Forging is one of the common technology of engineering goods production, and it is the key that formed product to forge the mold used, due to It repeats to forge the strength of mold when forging, after a certain period of time, mold cavity will appear different degrees of geometric dimension and expand, very To cracking at certain positions, need to repair it.
The applicant discloses a kind of " forging die cavity thin layer in the patent application application No. is 200510018789 Process for welding repair ", the technical solution used for：Mold cavity is uniformly first expanded into 3-5mm, is then integrally heated up to mold 350-400 DEG C and keep this temperature carry out soldering, welding rod be heated up to 300-350 DEG C keep 40-70 minutes, after being down to room temperature naturally For soldering, when electric welding, by the way of multilayer welding, every layer of soldering thickness control between 0.8-1.5mm, each layer from Circumferential edge edge starts, and terminates among mold cavity, until slightly above mold cavity original size, is then returned mold Fire, 400-500 DEG C of temperature, tempering insulation time is determined by 1 hour/2.5cm of mold maximum gauge, is down to naturally after tempering Room temperature, then fine machining die cavity use size to original.
Using the processing technology, long processing time needs to consume a large amount of wldings, causes mould repair cost higher.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to and provide a kind of forging die 3D printing increasing material REPAIR WELDING work Skill can save wlding, improve die life, reduce mould repair cost.
The technical solution adopted by the present invention to solve the technical problems is：A kind of forging die 3D printing increasing material REPAIR WELDING work Skill comprising following steps.
A, cavity is cleared up, the fatigue layer in mold cavity to be repaired, crackle are removed, impurity is cleared up；
B, scanning modeling is scanned mold cavity and establishes threedimensional model, and data processing is carried out to the threedimensional model, After reserved allowance, obtain the mold cavity carrying out the number of plies of processing required for increasing material reparation, per layer thickness and every layer Shape, which is exported；
C, increase material reparation, according to the data that step b is obtained, successively welding obtains target cavity by way of arc surfacing Imitated structure；
D, accurate to repair, it is positive mold cavity for machining allowance, excess metal, and throwing of polishing is removed by refine Light；It is negative mold cavity for machining allowance, mold cavity is machined to target cavity by way of thermal spraying, and beat Grinding and polishing light.
In step a, the thickness of removal fatigue layer is 8mm~10mm in mold cavity, and carries out having detected whether crackle.
In step b, reserved allowance is timing, and reserved allowance is 0.5mm~1mm, more than reserved processing When amount is negative, reserved allowance is -1mm~-0.2mm.
In step c, when being welded at each layer, the track of welding is scroll, is welded since the edge of cavity, until in Between position terminate, gapless between adjacent weld seam.
As another embodiment, in step c, when being welded at each layer, the track of welding is scroll, and welding is from type The edge of chamber starts, until centre position is terminated, there are gaps between adjacent weld seam, and the width in the gap is that 0.5 times of weld seam is wide Degree, adjacent layer are interlaced.
In step c, the thickness of weld seam is 1mm, and the width of weld seam is 1.5mm.
In step c, mold is subjected to temper after welding.
In step a, using carbon arc air gouging technique removal fatigue layer, crackle.
The beneficial effects of the invention are as follows：A kind of forging die 3D printing increasing material welding and restoring process, by clearing up cavity, scanning is built Mould, increase material reparation, it is accurate repair, after removing the metals such as fatigue layer, according to the comparison of cavity and target cavity, use weldering Material successively increases material printing, pocket machining to size and target cavity is similar, then further refine, to obtain object type Chamber, the processing technology compared with prior art, can save welding, increase die life.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail, is not the practical range the present invention Limited to this.
The forging die 3D printing of the present embodiment increases material welding and restoring process comprising following steps：
A, cavity is cleared up, using carbon arc air gouging technique, the fatigue layer in mold cavity to be repaired, crackle is removed, gone It except the thickness of fatigue layer is about 8mm~10mm, and carries out having detected whether crackle, clears up impurity.
B, scanning modeling is scanned mold cavity by 3D scanners and establishes threedimensional model, by designed mesh Mark cavity is converted into threedimensional model, the threedimensional model that scanning obtains is compared with the threedimensional model of design, and according to processing Condition is after following process reserves allowance, to obtain needing the increased form of metal in cavity, by the shape hierarchy, It can be obtained the number of plies processed required for repairing mould, per layer thickness and every layer of shape, which exported.
C, increase material reparation, according to the data that step b is obtained, successively welding obtains target cavity by way of arc surfacing Imitated structure.Successively welding refers to being welded in bottom with the mode of welding, and wlding molten metal has a certain thickness, forms the One layer, the second layer, third layer ... are then welded successively on it until completing.Before welding, it needs mold being integrally heated up to It 350 DEG C~400 DEG C and keeps the temperature, welding rod is heated up to 300 DEG C~350 DEG C and keeps the temperature a period of time, after each layer of welding, needs to remove Welding slag, checks whether defective, and welding finishes, and carries out temper.
D, accurate to repair, it is accurate to repair there are two types of mode, it is just, i.e., more than reserved processing one is reserved allowance It when amount is 0.5mm~1mm, needs to remove the allowance, excess metal, and sanding and polishing can be removed by refine.And In the case of reserved allowance is negative, i.e., reserved allowance is -1mm~-0.2mm, needs to continue using increasing material Processing, i.e., be machined to target cavity, and sanding and polishing by way of thermal spraying by mold cavity.
In above-mentioned steps c, when being welded at each layer, the track of welding is scroll, is welded since the edge of cavity, Terminate to centre position, gapless between adjacent weld seam, is a tabular after each layer of welding.
As another embodiment, can alternately be welded with adjacent layer, i.e. in step c, when being welded at each layer, welding Track be scroll, weld since the edge of cavity, until centre position is terminated, there are gap between adjacent weld seam, should between The width of gap is 0.5 times of weld width, and adjacent layer is interlaced, i.e., the groove of a scroll is formed after each layer welding, and Track when welding next time is the scroll, to form the groove of a scroll again.It is larger for throat thickness When, process velocity can be accelerated.
For the present embodiment, in step c, weld seam（The trace formed after welding）Thickness be 1mm, the width of weld seam is 1.5mm。
Present invention employs 3D printing technique, can quickly by pocket machining at the approximate shape of target cavity, then It further processes, compared with prior art, reduces wlding consumption, by taking steering knuckle forging mold as an example, it is possible to reduce use weldering Material 40%~50%, and die life promotion 30%~40%, it is with obvious effects.The welding process is by welding robot according to step It is carried out after the data automated programming of b, welding is reliable, improves the working efficiency of mould repair.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected The limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answer Work as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention Matter and range.

Claims (6)

1. forging die 3D printing increases material welding and restoring process, it is characterised in that：Include the following steps：
A, cavity is cleared up, the fatigue layer in mold cavity to be repaired, crackle are removed, impurity is cleared up；
B, scanning modeling is scanned mold cavity and establishes threedimensional model, carries out data processing to the threedimensional model, reserves After allowance, obtain carrying out the mold cavity to increase the number of plies processed required for material is repaired, every layer thickness and every layer of shape Shape exports the data；
C, increase material reparation, according to the data that step b is obtained, successively welded by way of arc surfacing and obtain the imitative of target cavity Shape structure；When being welded at each layer, the track of welding is scroll, is welded since the edge of cavity, until centre position is tied Beam, there are gaps between adjacent weld seam, and the width in the gap is 0 .5 times of weld width, and adjacent layer is interlaced；
D, accurate to repair, it is positive mold cavity for machining allowance, excess metal, and sanding and polishing is removed by refine； It is negative mold cavity for machining allowance, mold cavity is machined to target cavity by way of thermal spraying, and polish Polishing.
2. forging die 3D printing according to claim 1 increases material welding and restoring process, it is characterised in that：In step a, mould type The thickness that intracavitary removes fatigue layer is 8mm~10mm, and carries out having detected whether crackle.
3. forging die 3D printing according to claim 1 increases material welding and restoring process, it is characterised in that：It is reserved in step b Allowance is timing, and reserved allowance is 0 .5mm~1mm, when reserved allowance is negative, more than reserved processing Amount is the .2mm of -1mm~-0.
4. forging die 3D printing according to claim 1 increases material welding and restoring process, it is characterised in that：In step c, weld seam Thickness is 1mm, and the width of weld seam is 1 .5mm.
5. forging die 3D printing according to claim 4 increases material welding and restoring process, it is characterised in that：In step c, after welding Mold is subjected to temper.
6. forging die 3D printing according to claim 2 increases material welding and restoring process, it is characterised in that：In step a, use Carbon arc air gouging technique removes fatigue layer, crackle.
CN201510911896.3A 2015-12-11 2015-12-11 Forging die 3D printing increases material welding and restoring process Active CN105478764B (en)

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CN106881509B (en) * 2017-03-20 2018-11-02 南昌大学 A kind of 3D printing method increasing material and spark-erosion sinking based on ultrasonic welding
CN108339984B (en) * 2018-04-28 2021-01-22 攀钢集团攀枝花钢铁研究院有限公司 Method for growing complex structure on surface of cast-forged piece based on wire 3D printing
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CN108971901A (en) * 2018-08-15 2018-12-11 哈尔滨电机厂有限责任公司 A kind of impact type waterturbine wheel repairing reproduction method
CN110969693A (en) * 2018-09-30 2020-04-07 天津理工大学 Method for obtaining forging die defect position model
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CN109746453B (en) * 2019-01-21 2020-08-14 沈阳精合数控科技开发有限公司 Laser repair method and device
WO2021096904A1 (en) * 2019-11-15 2021-05-20 Hasbro, Inc. Toy figure manufacturing
CN110899707B (en) * 2019-11-22 2020-10-30 武汉理工大学 Powder shape-following volume material increase method for remanufacturing hot forging die and application thereof
CN111235380B (en) * 2020-02-24 2022-03-29 广州民航职业技术学院 Control method for surface layer characteristic parameter gradient during damaged metal component repair
CN114523258A (en) * 2020-11-23 2022-05-24 华域皮尔博格有色零部件(上海)有限公司 Repairing method for damaged area of cold thin wall of die casting die
CN113043618A (en) * 2021-03-25 2021-06-29 共享装备股份有限公司 Assembling method of FDM printing product

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