CN104388925A - Method for remanufacturing wire-drawing wheel - Google Patents
Method for remanufacturing wire-drawing wheel Download PDFInfo
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- CN104388925A CN104388925A CN201410553881.XA CN201410553881A CN104388925A CN 104388925 A CN104388925 A CN 104388925A CN 201410553881 A CN201410553881 A CN 201410553881A CN 104388925 A CN104388925 A CN 104388925A
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- pulling wheel
- wire
- drawing wheel
- powdered alloy
- powder
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Abstract
The invention discloses a method for remanufacturing a wire-drawing wheel. The method comprises the following steps: firstly, detecting the abrasion size of the wire-drawing wheel; secondly, removing a surface fatigue layer of the wire-drawing wheel; thirdly, preparing alloy powder, wherein the alloy powder comprises the following components in percentage by mass: 0.1-0.15 percent of C, 16-19 percent of Cr, 3-5 percent of Ni, 1.5-1.9 percent of Mo, 6-8 percent of W and the balance of Fe; fourthly, preparing mechanical pre-alloyed powder by using a three-dimensional powder mixer; fifthly, scanning the wire-drawing wheel clamped on a numerical control machining tool through a high-power semiconductor laser by using a gravity powder feeding method, and carrying out cladding of alloy powder on surface of the wire-drawing wheel; sixthly, machining the cladded wire-drawing wheel to obtain the wire-drawing wheel of which the size, the shape and the precision meet the standards respectively. The process is simple, the method is high in controllability, pollution-free and low in cost, the performance of the remanufactured wire-drawing wheel is excellent, and the service life of the remanufactured wire-drawing wheel is remarkably prolonged.
Description
Technical field the present invention relates to a kind of restorative procedure of wire-drawing equipment, particularly a kind of restorative procedure of pulling wheel.
Background technology steel wire, iron wire, copper wire etc. are used widely in metallurgy, mine, building materials, electric utility, and these preparations wiry are all realized by drawing wire machine.At present, China's wire-drawing equipment deficiencies such as still existence and stability is poor, work-ing life is short, seriously constrain the development of this industry, as one of most important parts of wire-drawing equipment---and pulling wheel in use easily weares and teares, cause institute's wire drawing off quality, have a strong impact on normally carrying out of production.Therefore manufacturing again for promoting work-ing life, the service efficiency of China wire-drawing equipment and enhancing the competitiveness there is important theory significance and practical value for this key part of pulling wheel is carried out.
Carry out repairing the technological method reparation being mostly to adopt surfacing WC at present to the pulling wheel after inefficacy, but because surfacing is organized thicker, WC is easy scaling loss in surfacing, and surfacing surface quality is poor, very easily cause the pulling wheel wear resistance decrease after repairing, fall flat.
Summary of the invention the object of the present invention is to provide that a kind of technique is simple, controllability is strong, energy consumption is few, cost is low, environmental pollution is little, not only make wearing and tearing after pulling wheel can reuse, and the reproducing method of the pulling wheel that performance is better, work-ing life significantly improves.The present invention mainly utilizes high-power semiconductor laser cladding powdered alloy to manufacture the pulling wheel after wearing and tearing again.
Technical scheme of the present invention is as follows:
(1) disintegration dismounting is carried out to wire-drawing equipment, pulling wheel to be repaired is cleaned, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1 ~ 1.5mm on pulling wheel surface;
(2) adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect;
(3) alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.1 ~ 0.15%, Cr 16 ~ 19%, Ni 3 ~ 5%, Mo 1.5 ~ 1.9%, W 6 ~ 8%, and surplus is Fe; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, mix, obtain mechanical pre-alloyed powdered alloy, the granularity of described powdered alloy is 153 ~ 325 orders;
(4) pulling wheel is fixed on laser processing numerically-controlled machine, adopt high power semiconductor lasers cladding scanning, setting laser device melting and coating process parameter, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, powder feed rate is 150 ~ 200g/min, by above-mentioned powdered alloy pulling wheel surface cladding 2 ~ 3 layers, alloy cladding layer thickness reaches 2 ~ 3mm; Described laser apparatus melting and coating process parameter is: power P=2000 ~ 3800W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=330 ~ 680mm/min;
(5) require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies;
(6) surface colour flaw detection is carried out to the pulling wheel after processing, detect whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability.
The present invention compared with prior art tool has the following advantages:
1, technique is simple, pollution-free, cost is low, can realize repeatedly manufacturing again of pulling wheel.
2, reduce, even eliminate organizing thick and causing finished product life-span low problem of surfacing WC traditional technology, and by the powdered alloy of proportion optimizing, greatly improve the work-ing life of pulling wheel after manufacturing again, the work-ing life of the pulling wheel after manufacturing again is compared the new pulling wheel life-span and improves more than 3 times, has outstanding economic benefit and social benefit.
Embodiment
Embodiment 1
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.1%, Cr 16%, Ni 3%, Mo 1.5%, W 6%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=2000W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=330mm/min, powder feed rate is 150g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 2 layers, alloy cladding layer thickness reaches 2mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 2
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.15%, Cr 19%, Ni 5%, Mo 1.9%, W 8%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=3800W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=680mm/min, powder feed rate is 200g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 3 layers, alloy cladding layer thickness reaches 3mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 3
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1.5mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.12%, Cr 18%, Ni 3.5%, Mo 1.8%, W 7%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=2800W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=480mm/min, powder feed rate is 180g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 3 layers, alloy cladding layer thickness reaches 3mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 4
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1.5mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.13%, Cr 19%, Ni 5%, Mo 1.9%, W 6%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=2450W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=350mm/min, powder feed rate is 160g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 3 layers, alloy cladding layer thickness reaches 3mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 5
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.15%, Cr 16%, Ni 3%, Mo 1.5%, W 8%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=3300W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=650mm/min, powder feed rate is 190g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 2 layers, alloy cladding layer thickness reaches 2mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 6
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.12%, Cr 16%, Ni 3%, Mo 1.6%, W 6%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=3700W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=660mm/min, powder feed rate is 200g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 2 layers, alloy cladding layer thickness reaches 2mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble pulling wheel equipment after the assay was approved.
Embodiment 7
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1.5mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.12%, Cr 17%, Ni 3%, Mo 1.6%, W 8%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=2600W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=420mm/min, powder feed rate is 175g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 3 layers, alloy cladding layer thickness reaches 3mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Embodiment 8
Disintegration dismounting is carried out to wire-drawing equipment, treats manufacturing pulling wheel again and clean, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1mm on pulling wheel surface; Adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect; Alloyage powder, the mass percent of each composition of described powdered alloy is: C 0.12%, Cr 17%, Ni 5%, Mo 1.6%, W 6.5%, and surplus is Fe, and the granularity of powdered alloy is 153 ~ 325 orders; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, obtain mechanical pre-alloyed powdered alloy; Pulling wheel is fixed on laser processing numerically-controlled machine, setting laser device melting and coating process parameter is: power P=3350W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=580mm/min, powder feed rate is 165g/min, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, by above-mentioned powdered alloy pulling wheel surface cladding 2 layers, alloy cladding layer thickness reaches 2mm; Require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies; Surface colour flaw detection is carried out to the pulling wheel after processing, detects whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability; Assemble wire-drawing equipment after the assay was approved.
Claims (3)
1. a reproducing method for pulling wheel, is characterized in that:
(1) disintegration dismounting is carried out to wire-drawing equipment, pulling wheel to be repaired is cleaned, detect size, determine pulling wheel surface abrasion position and abrasion loss thereof; According to detected result, remove the fatigue layer 1 ~ 1.5mm on pulling wheel surface;
(2) adopt magnetic-particle inspection and UT (Ultrasonic Testing), guarantee that the pulling wheel removing fatigue layer is without surface and subsurface defect;
(3) alloyage powder, the mass percent of each composition of described powdered alloy is: C0.1 ~ 0.15%, Cr 16 ~ 19%, Ni 3 ~ 5%, Mo 1.5 ~ 1.9%, W 6 ~ 8%, and surplus is Fe; The powdered alloy prepared in proportion is put into three-dimensional meal mixer mixing 3 hours, mix, obtain mechanical pre-alloyed powdered alloy;
(4) pulling wheel is fixed on laser processing numerically-controlled machine, adopt and high-powerly to scan than semiconductor laser cladding, setting laser device melting and coating process parameter, gravity powder delivery method is adopted to carry out laser melting coating to pulling wheel to be repaired surface, powder feed rate is 150 ~ 200g/min, by powdered alloy pulling wheel surface cladding 2 ~ 3 layers, alloy cladding layer thickness reaches 2 ~ 3mm;
(5) require to carry out mechanical workout to the pulling wheel after laser melting coating according to drawing and relevant technologies;
(6) surface colour flaw detection is carried out to the pulling wheel after processing, detect whether there is the defect affecting pulling wheel mechanical property, ensure that the size of pulling wheel, shape, precision and surface quality all reach criterion of acceptability.
2. the restorative procedure of pulling wheel according to claim 1, is characterized in that: laser apparatus melting and coating process parameter is: power P=2000 ~ 3800W, rectangular light spot 2.5 × 11.5mm, overlapping rate 30%, scan velocity V=330 ~ 680mm/min;
3. the restorative procedure of pulling wheel according to claim 1 and 2, is characterized in that: the granularity of described powdered alloy is 153 ~ 325 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553881.XA CN104388925A (en) | 2014-10-17 | 2014-10-17 | Method for remanufacturing wire-drawing wheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410553881.XA CN104388925A (en) | 2014-10-17 | 2014-10-17 | Method for remanufacturing wire-drawing wheel |
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| CN104388925A true CN104388925A (en) | 2015-03-04 |
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| CN201410553881.XA Pending CN104388925A (en) | 2014-10-17 | 2014-10-17 | Method for remanufacturing wire-drawing wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862693A (en) * | 2015-04-24 | 2015-08-26 | 燕山大学 | Laser cladding repair method of tower wheel of wire drawing machine |
| CN105543837A (en) * | 2015-12-25 | 2016-05-04 | 北京有色金属研究总院 | Repair method for copper-tungsten composite structure |
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| CN102728993A (en) * | 2012-06-14 | 2012-10-17 | 燕山大学 | Method for repairing roller sleeve of continuous casting roller |
| CN102747364A (en) * | 2012-06-14 | 2012-10-24 | 燕山大学 | Method for restoring inner bore of gear coupling |
| CN103436878A (en) * | 2013-07-29 | 2013-12-11 | 燕山大学 | Laser-cladding reinforced jaw plate and preparation method thereof |
| CN104084748A (en) * | 2014-06-13 | 2014-10-08 | 唐山市丰南区天泽科技有限公司 | Repairing method for ring mold |
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2014
- 2014-10-17 CN CN201410553881.XA patent/CN104388925A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728993A (en) * | 2012-06-14 | 2012-10-17 | 燕山大学 | Method for repairing roller sleeve of continuous casting roller |
| CN102747364A (en) * | 2012-06-14 | 2012-10-24 | 燕山大学 | Method for restoring inner bore of gear coupling |
| CN103436878A (en) * | 2013-07-29 | 2013-12-11 | 燕山大学 | Laser-cladding reinforced jaw plate and preparation method thereof |
| CN104084748A (en) * | 2014-06-13 | 2014-10-08 | 唐山市丰南区天泽科技有限公司 | Repairing method for ring mold |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862693A (en) * | 2015-04-24 | 2015-08-26 | 燕山大学 | Laser cladding repair method of tower wheel of wire drawing machine |
| CN105543837A (en) * | 2015-12-25 | 2016-05-04 | 北京有色金属研究总院 | Repair method for copper-tungsten composite structure |
| CN105543837B (en) * | 2015-12-25 | 2018-06-29 | 北京有色金属研究总院 | A kind of restorative procedure of copper tungsten composite construction |
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Application publication date: 20150304 |