CN107457523A - A kind of renovation technique of waste and old roller - Google Patents
A kind of renovation technique of waste and old roller Download PDFInfo
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- CN107457523A CN107457523A CN201710673418.2A CN201710673418A CN107457523A CN 107457523 A CN107457523 A CN 107457523A CN 201710673418 A CN201710673418 A CN 201710673418A CN 107457523 A CN107457523 A CN 107457523A
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- roller
- waste
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- processing
- old roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention discloses a kind of renovation technique of waste and old roller, the renovation technique according to the requirement of cement industry roll squeezer pressure roller drawing, selects the similar waste and old roller of size first, the position beyond waste and old roller working face is worked into the size of requirement using machining mode；Tired layer depth is confirmed by non-destructive testing technology, removes the fatigue layer of waste and old roller face surface；The defects of non-destructive testing technology refers to detect crackle, stomata or fatigue layer existing for waste and old roller surface using X ray non-destructive detecting device；It is poor according to the size of the waste and old roller of steel mill after processing and roll squeezer pressure roller working surface diameter, determine to repair the waste and old roller after processing using bushing formula or technique for overlaying, if waste and old roller work external diameter is less than 15cm with transforming the difference of product external diameter after processing, product is transformed using technique for overlaying, if difference is more than 15cm, product is transformed using bushing formula, Surface Machining processing is carried out to bushing rear or heap postwelding roller working surface.
Description
Technical field
The present invention relates to a kind of renovation technique of waste and old roller.
Background technology
At this stage, China's economic grow continuously and fast and heavy industrialization trend so that the relative nature lacked of China
Resource is bearing huge pressure.In this context, pursue and build minimizing (Reduce), recycle (Reuse), recycling
(Recycle) and transformation (Remanufacture) " 4R " Circular Economy, and then change chase after merely for a long time
The idea of development of scale and speed is sought, is not only a kind of policy guidance, and accepted by increasing people in the industry.
Improvement project is emerging a research field and new industry quickly grown.China will transform since 1999
Engineering is studied and promoted comprehensively as a subject system.Improvement project be it is theoretical to instruct with product life cycels,
Regeneration is realized as target using waste product, with high-quality, efficient, energy-conservation, section material, environmental protection for criterion, with advanced technology and production
Industry is produced as means, is repaired, transforms a series of technical measures of waste product or the general name of engineering activity.In brief,
Improvement project is the industrialization of waste product high-tech maintenance.The research object of improvement project both can be complete machine, system, set
Apply or its parts etc..
Iron and steel metallurgical industry be country basic activity, and country heavy industry, its production equipment part is various, big portion
Point be high (alternation) stress, high thermal stress adverse circumstances under work, such as Continuous Casting Rolls, alignment roller, groove profile roller, half steel rider, branch
Support roller, Wrapping Roll, pinch roll, conveying roller, cast pipe mold, heat (cold) roll working roll etc..Due to the depositing for a variety of causes such as rubbing, wearing
The normal operation of equipment is being maintained, substantial amounts of standby redundancy will be consumed every year.In such devices, various rolls are undoubtedly
The wherein equipment part of most critical, its consumption is big, expensive.
At this stage in the large-scale roller of iron and steel enterprise using being handled first by the way of position is changed after reaching the life-span, most
Handled afterwards in a manner of scrap iron.For some large-scale roller weight up to more than 30 tons, new product purchasing price is this kind of large-scale more than 1,000,000
The added value that roll contains in itself is very big.Traditional processing mode causes the huge waste of resource.At present due to lacking phase
The material and technology answered, directly recover original function of such roller after being transformed using technique for overlaying, certain technical problem be present,
But will be used for other fields after such city mineral products transformation by upgrading can farthest retain its added value, realize
Recycling economy.
The content of the invention
It is an object of the invention to provide a kind of renovation technique and technique of waste and old roller, the technology is capable of processability stabilization
Product to be transformed, the transformation product is used for the pressure roller of cement industry roll squeezer, not only manufacturing cost is low for the product, stable performance,
Also farthest remain the added value of waste and old roller.
To achieve these goals, the present invention takes following technical scheme：
First, according to the requirement of cement industry roll squeezer pressure roller drawing, the similar waste and old roller of size is selected, by waste and old roller work
Make the size that the position beyond face is worked into requirement using machining mode.
Then, tired layer depth is confirmed by non-destructive testing technology, removes the fatigue layer of waste and old roller face surface, then
Next step processing scheme is formulated according to requirement of the pressure roller drawing to size.
Non-destructive testing technology refer to using X ray non-destructive detecting device detect crackle existing for waste and old roller surface, stomata or
The defects of fatigue layer.
In next step, it is poor according to the size of the waste and old roller of steel mill after processing and roll squeezer pressure roller working surface diameter, determine to processing
Waste and old roller afterwards is repaired using bushing formula or technique for overlaying, if waste and old roller work external diameter is with transforming outside product after processing
The difference in footpath is less than 15cm, and product is transformed using technique for overlaying, if difference is more than 15cm, transforms product using bushing formula, makes
Improved product meets the requirement of roll squeezer pressure roller.
Bushing formula reparation is to be used as roller core by processing waste and old roller to use, and roller is determined with the waste and old roller core size processed
The internal diameter size of set, then the wear resistant roll set processed is embedded on roller core, it is combined into the roll squeezer pressure roller of energy normal use, heap
Weldering renovation technique is that the surface of wastes of iron and steel industry roller after processing directly carries out built-up welding.
In order to allow the waste and old roller material of itself to can adapt to the needs of pressure roller, the wear resistant roll set is made up of double-layer alloy
Complex abrasion-proof set, material is respectively 35CrMo and 20MnCr5, and roller set is manufactured using bimetal centrifugal composite casting technique, roller
Set has that outer layer hardness is high, wear-resistant, internal layer hardness is suitable, the characteristics of being easy to processing to inlay；
The technique for overlaying, it is that the surface of wastes of iron and steel industry roller after processing directly carries out built-up welding, in bead-welding technology,
Prepared respectively containing Ni0.3-2%, Cr4-9%, Si0.3-1%, Mn0.3-1.5%, C0.1-0.5%, surplus in waste and old roller surface
For Fe crack arrest layer, the transition containing Cr23-28%, Si0.3-1%, Mn0.3-1.5%, C3-4%, Mo1-2%, surplus for Fe
Layer and the hardstanding containing Cr26-30%, Si0.3-1%, Mn0.3-1.5%, C3-5%, Mo1-2%, Nb5-8%, surplus for Fe
Form gradient overlay cladding.
Finally, to after bushing or the roller working surface of heap postwelding carries out Surface Machining processing, including prepare hardened layer or
The working processes such as person's polishing processing.
It is an advantage of the invention that：The technology of the present invention is not only able to solve waste and old roller at present and caused using the tradition mode of melting down
Added value waste problem, reduce tradition and melt down the problem of environmental pollution that process bands are come, and cement industry can be substantially reduced
The manufacturing cost of roll squeezer pressure roller.
Embodiment
Embodiment 1
It by size is 1400 × 1400 that the present embodiment 1, which is, and material is that the Cr5 large-scale waste and old backing roll of steel mill is transformed into
The pressure roller of cement plant roll squeezer, the size of pressure roller is 1400 × 1200, and reforming technology first adds waste and old backing roll appearance and size
Work to pressure roller size, working face remove fatigue layer after diametrically remove 60mm, multi-gradient is prepared using technique for overlaying
Overlay cladding, prepared respectively containing Ni0.3-2%, Cr4-9%, Si0.3-1%, Mn0.3-1.5%, C0.1- in waste and old roller surface
0.5%th, surplus is Fe crack arrest layer 5, containing Cr23-28%, Si0.3-1%, Mn0.3-1.5%, C3-4%, Mo1-2%, remaining
Measure for Fe transition zone 6 and containing Cr26-30%, Si0.3-1%, Mn0.3-1.5%, C3-5%, Mo1-2%, Nb5-8%, remaining
Measure and form gradient overlay cladding for Fe hardstanding 7.So not only improve the shock resistance of base material but also improve the anti-wear performance on surface.
Embodiment 2
It by size is 800 × 1300 that the present embodiment 2, which is, and material is that the Cr5 large-scale waste and old backing roll of steel mill is transformed into
The pressure roller of cement plant roll squeezer, the size of pressure roller is 1400 × 1200, and reforming technology first adds waste and old backing roll appearance and size
The wear-resistant compound roller sleeve of preparation after working face removes fatigue layer, is embedded in waste and old by work to the size of pressure roller using bushing technology
On backing roll, wear resistant roll set is the complex abrasion-proof set being made up of double-layer alloy, and material is respectively 35CrMo and 20MnCr5, roller set
Manufactured using bimetal centrifugal composite casting technique, roller set has that the hardness of outer layer 4 is high, wear-resistant, the hardness of internal layer 3 is suitable, is easy to
The characteristics of processing is inlayed；It is the good alloy-layer of toughness because composite roll set is internal, outside is wear-resistant alloy layer, both improves base
The shock resistance of material improves the anti-wear performance on roller set surface again.
In summary, technology provided by the invention can farthest retain the added value of waste and old roller, while also can
The manufacturing cost of different field Large Roller is reduced, realizes recycling for resource.
Claims (4)
- A kind of 1. renovation technique of waste and old roller, it is characterised in that：(1) according to the requirement of cement industry roll squeezer pressure roller drawing, select the similar waste and old roller of size, by waste and old roller working face with Outer position is worked into the size of requirement using machining mode；(2) tired layer depth is confirmed by non-destructive testing technology, the fatigue layer of waste and old roller face surface is removed, then according to pressure Next step processing scheme is formulated in requirement of the roller drawing to size；(3) it is poor according to the size of the waste and old roller of steel mill after processing and roll squeezer pressure roller working surface diameter, determine to waste and old after processing Roller is repaired using bushing formula or technique for overlaying, if difference of the waste and old roller work external diameter with transforming product external diameter after processing Less than 15cm, product is transformed using technique for overlaying, if difference is more than 15cm, product is transformed using bushing formula, made improved Product meets the requirement of roll squeezer pressure roller；(4) Surface Machining processing is carried out to bushing rear or heap postwelding roller working surface, including prepares hardened layer or polishing The working processes such as processing.
- A kind of 2. renovation technique of waste and old roller according to claim 1, it is characterised in that：The bushing formula reparation, is logical Cross and process waste and old roller and used as roller core, the internal diameter size of roller set is determined with the waste and old roller core size processed, then will processing Good wear resistant roll set is embedded on roller core, is combined into the roll squeezer pressure roller of energy normal use.
- A kind of 3. renovation technique of waste and old roller according to claim 2, it is characterised in that：The wear resistant roll set, is by double The complex abrasion-proof set that laminated gold is formed, material are respectively 35CrMo and 20MnCr5, and roller set uses bimetal centrifugal composite casting skill Art manufactures, and roller set has that outer layer hardness is high, wear-resistant, internal layer hardness is suitable, the characteristics of being easy to processing to inlay.
- A kind of 4. renovation technique of waste and old roller according to claim 1, it is characterised in that：The technique for overlaying, it is to add The surface of waste and old roller after work directly carries out built-up welding, in bead-welding technology, waste and old roller surface prepare respectively containing Ni0.3-2%, Cr4-9%, Si0.3-1%, Mn0.3-1.5%, C0.1-0.5%, the crack arrest layer that surplus is Fe, containing Cr23-28%, Si0.3- 1%th, Mn0.3-1.5%, C3-4%, Mo1-2%, surplus are for Fe transition zone and containing Cr26-30%, Si0.3-1%, Mn0.3- 1.5%th, C3-5%, Mo1-2%, Nb5-8%, the hardstanding that surplus is Fe form gradient overlay cladding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673418.2A CN107457523A (en) | 2017-08-09 | 2017-08-09 | A kind of renovation technique of waste and old roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673418.2A CN107457523A (en) | 2017-08-09 | 2017-08-09 | A kind of renovation technique of waste and old roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107457523A true CN107457523A (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710673418.2A Pending CN107457523A (en) | 2017-08-09 | 2017-08-09 | A kind of renovation technique of waste and old roller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941203A (en) * | 2018-05-24 | 2018-12-07 | 首钢智新迁安电磁材料有限公司 | A kind of the latter stage roll and its application method of milling train |
| CN109108569A (en) * | 2018-09-13 | 2019-01-01 | 李统帅 | A kind of waste and old backing roll insetting sleeve repair technique of milling train |
-
2017
- 2017-08-09 CN CN201710673418.2A patent/CN107457523A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941203A (en) * | 2018-05-24 | 2018-12-07 | 首钢智新迁安电磁材料有限公司 | A kind of the latter stage roll and its application method of milling train |
| CN109108569A (en) * | 2018-09-13 | 2019-01-01 | 李统帅 | A kind of waste and old backing roll insetting sleeve repair technique of milling train |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171212 |