CN109332929A - A kind of casting defect repair method - Google Patents
A kind of casting defect repair method Download PDFInfo
- Publication number
- CN109332929A CN109332929A CN201811252519.3A CN201811252519A CN109332929A CN 109332929 A CN109332929 A CN 109332929A CN 201811252519 A CN201811252519 A CN 201811252519A CN 109332929 A CN109332929 A CN 109332929A
- Authority
- CN
- China
- Prior art keywords
- casting
- fault location
- strip
- iron filings
- repair 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 58
- 230000007547 defect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000005488 sandblasting Methods 0.000 claims abstract description 5
- 238000012790 confirmation Methods 0.000 claims abstract description 4
- 238000005554 pickling Methods 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000005476 soldering Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000005267 amalgamation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000012913 prioritisation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003818 cinder Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The present invention relates to a kind of casting defect repair method is provided, include the following steps: that (1) will be cleaned out at casting defect, and remove the oxide layer and decarburized layer of blemish surface；(2) strip being cut into the foundry returns of furnace with casting or being processed into iron filings, strip and iron filings can be put into defect；(3) fault location cleaned out is preheating to 800 degrees Celsius or more, while iron filings or strip is backfilling into fault location and are heated at high temperature to 2000 ~ 3000 degrees Celsius to it, fuse it mutually with casting ontology；(4) casting is air-cooled to room temperature, then removes extra welding repair material, keep casting original plane smooth；(5) penetrant inspection confirmation is carried out to the fault location after repairing, does not find gap such as, then ball blast, pickling or sandblasting are carried out to casting.The present invention is used replaces welding wire to carry out soldering to fault location with casting with the foundry returns of furnace, not only meets product quality requirement, but also color and casting ontology coincide, reduces welding wire investment, reduce Foundry Production cost.
Description
Technical field
The present invention relates to casting flaw repairing technique field more particularly to a kind of casting defect repair methods.
Background technique
The surface of routine casting product usually will appear the defects of cinder hole, stomata, need to reach surface quality by soldering
It is required that.It is all at present using welding wire repair by welding in the industry, since castings material is wide in variety, welding wire material is relatively single, institute
It is insufficient so as to cause soldering intensity will appear welding wire and casting composition Incomplete matching phenomenon, and soldering region with it is original
Casting color is inconsistent, improves the scrappage of casting, production cost is also significantly increased.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of casting defect repair methods, using the returning with furnace with base material
Furnace charge carries out soldering, not only increases the amalgamation of soldering area and ontology, and solid colour, significantly reduces scrappage.
The present invention is achieved through the following technical solutions, provides a kind of casting defect repair method, includes the following steps:
(1) it will be cleaned out at casting defect, and remove the oxide layer and decarburized layer of blemish surface, be conducive to improve welding repair material
With the amalgamation of casting ontology；
(2) strip being cut into the foundry returns of furnace with casting or being processed into iron filings, strip and iron filings can be put into defect；It will
With casting with furnace foundry returns as welding repair material, improve the amalgamation and colour consistency in soldering area Yu casting ontology, will
Foundry returns is cut into strip or is processed into iron filings, improves the filling rate of defect, and shortens fusing time, improves soldering
Efficiency；
(3) iron filings or strip for the fault location cleaned out being preheating to 800 degrees Celsius or more, while step (2) being obtained return
It fills out fault location and is heated at high temperature to 2000 ~ 3000 degrees Celsius to it, fuse it mutually with casting ontology；
(4) casting is air-cooled to room temperature, then removes extra welding repair material, keep casting original plane smooth；
(5) penetrant inspection confirmation is carried out to the fault location after repairing, does not such as find gap, then to casting carry out ball blast, pickling or
Sandblasting.
As optimization, fault location is preheated using argon welding machine in step (3).Fault location is carried out using argon welding machine pre-
Heat shortens preheating time, improves the efficiency of preheating.
As optimization, the oxide layer and practical decarburized depth removed in step (1) is 2 ~ 2.5mm.This prioritization scheme ensure that
Fault location is clean by thorough cleaning, to guarantee that welding repair material is preferably fused with casting ontology.
As optimization, the length of strip is not more than 3 mm, and width is not more than 2mm, and thickness is not more than 1mm.This prioritization scheme
Strip size setting, not only can satisfy the use of number of drawbacks, be easy to be melted, can add during heating, and
Facilitate cutting, reduces the operating difficulty of cutting.
As optimization, iron filings with a thickness of 0.3 ~ 0.5mm.The setting of this prioritization scheme iron filings thickness, not only facilitates turning
It obtains, and fusing demand temperature is low, improves soldering efficiency.
The invention has the benefit that replacing welding wire to carry out soldering to fault location with the foundry returns of furnace using with casting, no
Only meet product quality requirement, and color and casting ontology coincide, reduce welding wire cost investment, reduce Foundry Production at
This.
Detailed description of the invention
Fig. 1 is casting defect schematic diagram；
Fig. 2 is the prior art and welding effect comparison diagram of the present invention；
In figure: 1, the method for the present invention welding effect, 2, E410NiMo welding wire welding effect, 3,1Cr13Ni welding wire welding effect.
Specific embodiment
In order to clarify the technical characteristics of the invention, being illustrated below by specific embodiment to this programme.
A kind of casting defect repair method, includes the following steps:
1, it will all be excavated at casting defect, clear clean Slag inclusion will be cleaned out, and remove defect table at casting defect
The oxide layer and decarburized layer in face, the oxide layer and practical decarburized depth of removal are 2mm, go the method for removing oxide layer and decarburized layer can be with
It is to excavate, is also possible to remove using sandblasting.
2, strip being cut into the foundry returns of furnace with casting or being processed into iron filings, strip and iron filings can be put into defect
It is interior.It if it is strip, is cut using wire cutting, the length of strip is 3 mm, width 2mm, with a thickness of 1mm；If it is
Iron filings are processed by lathe, iron filings with a thickness of 0.5mm.
3, the fault location cleaned out is preheating to by 800 degrees Celsius or more, while the iron that step 2 is obtained using argon welding machine
Bits or strip are backfilling into fault location and are heated at high temperature to 2000 ~ 3000 degrees Celsius to it, fuse it mutually with casting ontology and are
One.
4, casting is air-cooled to room temperature, then reconditioning removes extra welding repair material, keeps casting original plane smooth.
5, penetrant inspection confirmation is carried out to the fault location after repairing, does not find gap such as, then ball blast, pickling are carried out to casting
Or sandblasting, to meet shipper requirements.
In actual production, for the casting normal defect of 1Cr13Ni material, because do not fit like a glove with casting composition
Welding wire after the E410 welding wire similar in ingredient carries out soldering, will appear the shallower spot of color after cast(ing) surface processing, influence to cast
Part quality, causes client to complain.Even if after buying to the welding wire of 1Cr13Ni, repair by welding is carried out to casting defect, because of welding wire
With not fully coincideing for casting chemical component, it still will appear the shallower spot of pad color.
After repair method of the invention, then solve the above problem, color and casting ontology coincide, visual appearance without
Color difference, and penetrant inspection confirms no-welding-seam, improves the structural strength of casting, reduces welding wire cost investment, improves client
Satisfaction.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or
It is realized using the prior art, details are not described herein；Above embodiments and attached drawing are only used to illustrate the technical scheme of the present invention not
It is limitation of the present invention, is described the invention in detail referring to preferred embodiment, the ordinary skill people of this field
Member is it should be appreciated that variation, remodeling, the addition that those skilled in the art are made within the essential scope of the present invention
Or replacement also should belong to claims of the invention without departure from spirit of the invention.
Claims (5)
1. a kind of casting defect repair method, which comprises the steps of:
(1) it will be cleaned out at casting defect, and remove the oxide layer and decarburized layer of blemish surface；
(2) strip being cut into the foundry returns of furnace with casting or being processed into iron filings, strip and iron filings can be put into defect；
(3) iron filings or strip for the fault location cleaned out being preheating to 800 degrees Celsius or more, while step (2) being obtained return
It fills out fault location and is heated at high temperature to 2000 ~ 3000 degrees Celsius to it, fuse it mutually with casting ontology；
(4) casting is air-cooled to room temperature, then removes extra welding repair material, keep casting original plane smooth；
(5) penetrant inspection confirmation is carried out to the fault location after repairing, does not such as find gap, then to casting carry out ball blast, pickling or
Sandblasting.
2. a kind of casting defect repair method according to claim 1, it is characterised in that: use argon welding machine in step (3)
Fault location is preheated.
3. a kind of casting defect repair method according to claim 1 or 2, it is characterised in that: the oxygen removed in step (1)
Change layer and practical decarburized depth is 2 ~ 2.5mm.
4. a kind of casting defect repair method according to claim 1, it is characterised in that: the length of strip is not more than 3
Mm, width are not more than 2mm, and thickness is not more than 1mm.
5. a kind of casting defect repair method according to claim 1, it is characterised in that: iron filings with a thickness of 0.3 ~
0.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252519.3A CN109332929A (en) | 2018-10-25 | 2018-10-25 | A kind of casting defect repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252519.3A CN109332929A (en) | 2018-10-25 | 2018-10-25 | A kind of casting defect repair method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109332929A true CN109332929A (en) | 2019-02-15 |
Family
ID=65312228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811252519.3A Pending CN109332929A (en) | 2018-10-25 | 2018-10-25 | A kind of casting defect repair method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109332929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399659A (en) * | 2021-04-29 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface defect repairing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934434A (en) * | 2010-09-26 | 2011-01-05 | 大庆市锐虹机械制造有限公司 | Cast iron hot repair welding process and device |
| CN104551523A (en) * | 2014-12-05 | 2015-04-29 | 重庆市极鼎金属铸造有限责任公司 | Iron casting piece repairing method |
| CN105234598A (en) * | 2015-10-19 | 2016-01-13 | 东方电气集团东方汽轮机有限公司 | Material repair welding method of CB2 casting of ultra-supercritical turbine unit |
| CN107263014A (en) * | 2017-07-05 | 2017-10-20 | 天长市兴宇铸造有限公司 | A kind of process of casting defect soldering |
| CN108381010A (en) * | 2018-02-05 | 2018-08-10 | 内蒙古机集团林峰特种铸造有限公司 | Casting Al-Cu alloy ZL201A argon tungsten-arc welding repair methods |
-
2018
- 2018-10-25 CN CN201811252519.3A patent/CN109332929A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934434A (en) * | 2010-09-26 | 2011-01-05 | 大庆市锐虹机械制造有限公司 | Cast iron hot repair welding process and device |
| CN104551523A (en) * | 2014-12-05 | 2015-04-29 | 重庆市极鼎金属铸造有限责任公司 | Iron casting piece repairing method |
| CN105234598A (en) * | 2015-10-19 | 2016-01-13 | 东方电气集团东方汽轮机有限公司 | Material repair welding method of CB2 casting of ultra-supercritical turbine unit |
| CN107263014A (en) * | 2017-07-05 | 2017-10-20 | 天长市兴宇铸造有限公司 | A kind of process of casting defect soldering |
| CN108381010A (en) * | 2018-02-05 | 2018-08-10 | 内蒙古机集团林峰特种铸造有限公司 | Casting Al-Cu alloy ZL201A argon tungsten-arc welding repair methods |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国第一机械部统编: "《机械工人技术培训教材 造型工工艺学 中级本》", 31 May 1984, 科学普及出版社 * |
| 周伯伟等: "《金工实习》", 28 February 2006, 南京大学出版社 * |
| 王春山等: "《铁路货车铸造技术 摇枕、侧架、车钩》", 31 March 2014, 中国铁道出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399659A (en) * | 2021-04-29 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface defect repairing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 271200 Mingxing Road, Xintai Development Zone, Taian City, Shandong Province Applicant after: Shandong Mingxing Metal Technology Co.,Ltd. Address before: 271200 Mingxing Road, Xintai Development Zone, Taian City, Shandong Province Applicant before: Shandong Mingxing Metal Technology Co.,Ltd. Address after: 271200 Mingxing Road, Xintai Development Zone, Taian City, Shandong Province Applicant after: Shandong Mingxing Metal Technology Co.,Ltd. Address before: 271200 Xintai Development Zone, Tai'an City, Shandong Province (west of Zhengda Coking Plant) Applicant before: SHANDONG MINGXING STAINLESS STEEL PRECISION CASTING Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |
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| RJ01 | Rejection of invention patent application after publication |