CN103521995A - Metallurgy sintering fuel breaker roll repairing technology - Google Patents
Metallurgy sintering fuel breaker roll repairing technology Download PDFInfo
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- CN103521995A CN103521995A CN201310457716.XA CN201310457716A CN103521995A CN 103521995 A CN103521995 A CN 103521995A CN 201310457716 A CN201310457716 A CN 201310457716A CN 103521995 A CN103521995 A CN 103521995A
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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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Abstract
The invention relates to a metallurgy sintering fuel breaker roll repairing technology and belongs to the technical field of a sintering roller repairing method. The service life of a repaired breaker roll is prolonged by means of the metallurgy sintering fuel breaker roll repairing technology. The technical scheme of the metallurgy sintering fuel breaker roll repairing technology is that bead weld is carried out by the adoption of three kinds of welding sticks in a layering mode. Multiple times of heating processing technological processes are carried out among layered bead weld processes and after the whole bead weld is finished so that the three bead weld layers can be firmly connected and metallic characteristics of different bead weld layers are fully made use of and finally, the breaker roll is repaired. The metallurgy sintering fuel breaker roll repairing technology is scientific and reasonable in design, easy, convenient and feasible in technological process and capable of effectively prolonging the service life of the repaired breaker roll. The service life of the repaired breaker roll can be prolonged to be 6-8 months. Thus, the repairing frequency of the breaker roll is reduced, maintenance cost is reduced, labor intensity of workers is reduced and the aim of continuous production is ensured. The problem which haunts technological personnel in the industry for a long time is solved and an outstanding contribution is made to improvement of economic benefits of enterprises.
Description
Technical field
The present invention relates to a kind of renovation technique to metallurgy sintered fuel crushing roller, belong to sintering roll restorative procedure technical field.
Background technology
In metallurgy sintered fuel crushing production process, need to use four-roller crusher to carry out sintering fuel in small, broken bits, so four-roller crusher is the process equipment of an outbalance in sintering process.The device parameter of four-roller crusher is: pan feeding < 25 ㎜, and top roll gap 8 ㎜, lower roll gap 3 ㎜, material is uniform vertically, the amount 90% of discharging-material size 0～3mm; The treating capacity per hour of four-roller crusher is 40 tons.Sintering fuel comprises that anthracite and granularity are less than the coke grain of 40mm, and these two kinds of fuel are different to the degree of wear of the breaker roll of four-roller crusher.At present, the roller skin of the breaker roll of four-roller crusher is cast member, thickness is 120mm, after wearing and tearing, when being more than or equal to 80mm, need to repair roller skin thickness, repair mode is generally off-line reparation. and original renovation technique adopts common surfacing welding, before built-up welding, breaker roll is adopted to gas welding preheating, be 1--2 month the service life after reparation, this renovation technique exist renovation technique simple and crude, repair after the defects such as breaker roll service life is shorter, not only increased cost and maintenance load, repaired frequently and also affected carrying out smoothly continuously of producing.Up to now, after breaker roll reparation, short problem is never resolved service time, how to change this state and is perplexing the technical staff in industry always, becomes a difficult problem of needing solution badly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of renovation technique of new metallurgy sintered fuel crushing roller, this renovation technique can overcome the defect of current renovation technique, extends the service life of breaker roll, reduces breaker roll and repairs number of times, reduce cost of equipment, reduce workman's labour intensity.
The technical scheme solving the problems of the technologies described above is:
A renovation technique for metallurgy sintered fuel crushing roller, it adopts following steps to carry out:
1, adopt machining mode to eliminate the original fatigue layer of breaker roll, require free from flaw, iron rust, impurity;
2, be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick;
Then with YS420 welding wire, join after HJ260 weldering 4--6 layer roller skin hardfacing alloy thickness >=20mm 3, then; Enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, is incubated 8 hours ± 10min, cools to 400 ℃ ± 10 ℃ with the furnace;
4, with 225B welding wire, join 107 heaps and be welded to and meet the requirements of size (roller skin external diameter is Φ 1200mm), enter heating furnace and be heated to 550 ℃ ± 10 ℃, be incubated 10 hours ± 10min, cool to 50 ℃ with the furnace and come out of the stove below;
5, machined, reaches roughness: 12.6 √;
6, the roller of heap postwelding is heat-treated, after repairing, the monolateral thickness of roller skin is 120mm, hardness HRC48-52.
The renovation technique of above-mentioned metallurgy sintered fuel crushing roller, described in be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick.
The renovation technique of above-mentioned metallurgy sintered fuel crushing roller, describedly joins after HJ260 weldering 4--6 layer with YS420 welding wire, roller skin hardfacing alloy thickness >=20mm, enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, is incubated 8 hours ± 10min, cools to 400 ℃ ± 10 ℃ with the furnace.
The renovation technique of above-mentioned metallurgy sintered fuel crushing roller, describedly joins 107 heaps with 225B welding wire and is welded to and meets the requirements of after size, enters heating furnace and is heated to 550 ℃ ± 10 ℃, is incubated 10 hours ± 10min, cools to 50 ℃ with the furnace and comes out of the stove below.
The invention has the beneficial effects as follows:
The present invention is a kind of renovation technique of brand-new metallurgy sintered fuel crushing roller, adopt three kinds of welding wire layerings to carry out built-up welding, in between layering weld deposit process and whole built-up welding, after completing, also has repeatedly heat treatment process, three layers of overlay cladding are firmly connected, and the metallic character of different overlay claddings is not fully exerted, finally complete the reparation of breaker roll.Process design science of the present invention, reasonable, technical process is simple and easy to do, can effectively extend the service life of the breaker roll after reparation, make the breaker roll after repairing bring up to 6-8 month service life, therefore reached reduce breaker roll repair number of times, reduce maintenance cost, reduce workman labour intensity, guarantee to produce the object of carrying out continuously.The invention solves a difficult problem that is perplexing for a long time the technical staff in industry, short state is changed to make after the reparation of sintering crushing roller service time, to improving the economic benefit of enterprise, has made outstanding contributions.
The specific embodiment
The present invention is a kind of renovation technique of new metallurgy sintered fuel crushing roller, and it adopts following steps to carry out:
1, adopt machining mode to eliminate the original fatigue layer of breaker roll, require free from flaw, iron rust, impurity;
2, be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick;
Then with YS420 welding wire, join after HJ260 weldering 4--6 layer roller skin hardfacing alloy thickness >=20mm 3, then; Enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, is incubated 8 hours ± 10min, cools to 400 ℃ ± 10 ℃ with the furnace;
4, with 225B welding wire, join 107 heaps and be welded to and meet the requirements of size (roller skin external diameter is Φ 1200mm), enter heating furnace and be heated to 550 ℃ ± 10 ℃, be incubated 10 hours ± 10min, cool to 50 ℃ with the furnace and come out of the stove below;
5, machined, reaches roughness: 12.6 √;
6, the roller of heap postwelding is heat-treated, after repairing, the monolateral thickness of roller skin is 120mm, hardness HRC48-52.
Above technical process, adopt three kinds of welding wire layerings to carry out built-up welding, in between layering weld deposit process and whole built-up welding, after completing, also has repeatedly heat treatment process, three layers of overlay cladding are firmly connected, and the metallic character of different overlay claddings is not fully exerted, finally complete the reparation of breaker roll.
For the renovation technique of above-mentioned metallurgy sintered fuel crushing roller, its preferred version is:
1, adopt machining mode to eliminate original fatigue layer, require free from flaw, iron rust, impurity;
2, be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick;
Then with YS420 welding wire, join after HJ260 weldering 4--6 layer roller skin hardfacing alloy thickness >=20mm 3, then; Enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, is incubated 8 hours ± 10min, cools to 400 ℃ ± 10 ℃ with the furnace.
4, with 225B welding wire, join 107 heaps and be welded to and meet the requirements of size (roller skin external diameter is Φ 1200mm), enter heating furnace and be heated to 550 ℃ ± 10 ℃, be incubated 10 hours ± 10min, cool to 50 ℃ with the furnace and come out of the stove below;
5, machined, reaches roughness: 12.6 √
6, the roller of heap postwelding is heat-treated, after repairing, the monolateral thickness of roller skin is 120mm, hardness HRC48-52.
Breaker roll after the present invention repairs, overlay cladding thickness is not less than 15mm.Finally reaching roller external diameter is Φ 1200, and roller external diameter ellipticity error is not more than 2mm, finally overlay cladding is carried out to dye penetrant inspection processing.
Claims (4)
1. a renovation technique for metallurgy sintered fuel crushing roller, is characterized in that: it adopts following steps to carry out,
(1), adopt machining mode to eliminate the original fatigue layer of breaker roll, require free from flaw, iron rust, impurity;
(2), be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick;
, then, then with YS420 welding wire, join after HJ260 weldering 4--6 layer roller skin hardfacing alloy thickness >=20mm (3); Enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, is incubated 8 hours ± 10min, cools to 400 ℃ ± 10 ℃ with the furnace;
(4), with 225B welding wire, join 107 heaps and be welded to and meet the requirements of size (roller skin external diameter is Φ 1200mm), enter heating furnace and be heated to 550 ℃ ± 10 ℃, be incubated 10 hours ± 10min, cool to 50 ℃ with the furnace and come out of the stove below;
(5) machined, reaches roughness: 12.6 √;
(6) roller of heap postwelding is heat-treated, after repairing, the monolateral thickness of roller skin is 120mm, hardness HRC48-52.
2. the renovation technique of metallurgy sintered fuel crushing roller according to claim 1, is characterized in that: described in be preheating to 400 ℃ ± 10 ℃, be incubated 6 hours ± 10min, with YS104 welding wire, with addition of HJ431, weld two-layerly, monolateral 5mm is thick.
3. the renovation technique of metallurgy sintered fuel crushing roller according to claim 1, it is characterized in that: describedly with YS420 welding wire, join after HJ260 weldering 4--6 layer, roller skin hardfacing alloy thickness >=20mm, enter heating furnace heat treatment, in stove, temperature is 480 ℃ ± 10 ℃, 8 hours ± 10min of insulation, cools to 400 ℃ ± 10 ℃ with the furnace.
4. the renovation technique of metallurgy sintered fuel crushing roller according to claim 1, it is characterized in that: describedly with 225B welding wire, join 107 heaps and be welded to and meet the requirements of after size, enter heating furnace and be heated to 550 ℃ ± 10 ℃, be incubated 10 hours ± 10min, cool to 50 ℃ with the furnace and come out of the stove below.
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| CN201310457716.XA CN103521995A (en) | 2013-09-30 | 2013-09-30 | Metallurgy sintering fuel breaker roll repairing technology |
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| CN201310457716.XA CN103521995A (en) | 2013-09-30 | 2013-09-30 | Metallurgy sintering fuel breaker roll repairing technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048198A (en) * | 2018-08-13 | 2018-12-21 | 芜湖鼎恒材料技术有限公司 | A kind of roller neck renovation technique |
| CN109108531A (en) * | 2018-10-11 | 2019-01-01 | 苏州优霹耐磨复合材料有限公司 | Roll overlaying repairs pre-treating method |
| CN114682991A (en) * | 2022-04-26 | 2022-07-01 | 昆明理工大学 | Repairing method of copper crystallizer for EB furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207580A (en) * | 1986-03-06 | 1987-09-11 | Kobe Steel Ltd | Welding repair method for large diameter long sized roll with partial wear |
| CN101758358A (en) * | 2008-10-14 | 2010-06-30 | 上海和欣金属制品有限公司 | Process for repairing roller of bearing |
| CN101856778A (en) * | 2010-05-18 | 2010-10-13 | 武汉科技大学 | Method for repairing continuous casting and rolling roller of aluminum pole |
| CN102152058A (en) * | 2011-05-11 | 2011-08-17 | 天津冶金集团重型机械制造有限公司 | Surfacing repair method for large cold-rolled supporting roll |
| CN102366873A (en) * | 2011-10-26 | 2012-03-07 | 攀钢集团西昌钢钒有限公司 | Patterned roller repairing method |
| CN103212936A (en) * | 2013-04-09 | 2013-07-24 | 莱芜钢铁集团有限公司 | Method for repairing single-roll crusher |
-
2013
- 2013-09-30 CN CN201310457716.XA patent/CN103521995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207580A (en) * | 1986-03-06 | 1987-09-11 | Kobe Steel Ltd | Welding repair method for large diameter long sized roll with partial wear |
| CN101758358A (en) * | 2008-10-14 | 2010-06-30 | 上海和欣金属制品有限公司 | Process for repairing roller of bearing |
| CN101856778A (en) * | 2010-05-18 | 2010-10-13 | 武汉科技大学 | Method for repairing continuous casting and rolling roller of aluminum pole |
| CN102152058A (en) * | 2011-05-11 | 2011-08-17 | 天津冶金集团重型机械制造有限公司 | Surfacing repair method for large cold-rolled supporting roll |
| CN102366873A (en) * | 2011-10-26 | 2012-03-07 | 攀钢集团西昌钢钒有限公司 | Patterned roller repairing method |
| CN103212936A (en) * | 2013-04-09 | 2013-07-24 | 莱芜钢铁集团有限公司 | Method for repairing single-roll crusher |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048198A (en) * | 2018-08-13 | 2018-12-21 | 芜湖鼎恒材料技术有限公司 | A kind of roller neck renovation technique |
| CN109108531A (en) * | 2018-10-11 | 2019-01-01 | 苏州优霹耐磨复合材料有限公司 | Roll overlaying repairs pre-treating method |
| CN114682991A (en) * | 2022-04-26 | 2022-07-01 | 昆明理工大学 | Repairing method of copper crystallizer for EB furnace |
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Application publication date: 20140122 |