CN109047725A - A kind of renovation technique of high-temperature heat treatment furnace roller - Google Patents
A kind of renovation technique of high-temperature heat treatment furnace roller Download PDFInfo
- Publication number
- CN109047725A CN109047725A CN201810942730.1A CN201810942730A CN109047725A CN 109047725 A CN109047725 A CN 109047725A CN 201810942730 A CN201810942730 A CN 201810942730A CN 109047725 A CN109047725 A CN 109047725A
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- CN
- China
- Prior art keywords
- furnace roller
- substrate
- body surface
- heat treatment
- roll
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/06—Casting in, on, or around objects which form part of the product for manufacturing or repairing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses a kind of renovation techniques of high-temperature heat treatment furnace roller, on the basis of original impaired furnace roller, turning removes body of roll damaged layer, pitted skin is made in surface again, reparation substrate layer is produced in body surface centrifugal casting by centrifugal casting machine, form new furnace roller, hot operation can be put into once again after finishing to body surface, substrate is repaired in former body of roll main material Cr, on the basis of Ni element is constant, it also added C, W, the elements such as Nb, it ensure that the high degrees of fusion for repairing substrate and the body of roll, and the furnace roller intensity at high operating temperatures after repairing and hardness are increased dramatically, improve body of roll performance, extend service life, production cost is saved, considerable benefit is brought for enterprise, as a kind of Green Remanufacturing Technique, promotion prospect is wide, industrial value is huge, the present invention is repaired suitable for high-temperature furnace roller It returns to work skill.
Description
Technical field
The present invention relates to high-temperature furnace roller renovation technique field, in particular to a kind of renovation technique of high-temperature heat treatment furnace roller.
Background technique
With manufacturing fast development, the degree of automation of Equipment for Heating Processing is higher and higher, at full automatic Continuous Heat
Reason production line is widely applied.Roller hearth type heating furnace is the main type of furnace of heating before the quenching such as steel plate, steel pipe, bar, work
Part conveys on live-roller stick, and forward-reverse is controllable, and speed is adjustable.
Due to the hot environment in quenching heating furnace, strength reduction, surface hardness reduce roller stick at high operating temperatures, cold conditions
When workpiece is rapidly entered in furnace, burr, end of steel pipe of steel plate end etc. cause to damage to roller stick surface so that roller stick by
Damage, as shown in Figure 1, impaired furnace roller surface forms pit, intensity constantly decreases up to fracture.Especially in stainless steel tube solution heat treatment
During reason, heating in-furnace temperature is up to 1100 DEG C or more, and the roller stick in furnace is damaged seriously, 1 under the continuous collision of steel pipe
Or so moon will renew the roller stick in furnace once.The material of live-roller stick is ZGCr25Ni20Si2 high-temperature alloy, material at
This height, one Ci Gun stick enterprise of replacement need to spend nearly million cost.Moreover, more roll change stick needs blowing out 2 weeks or so, serious shadow
Ring effective operation and the working efficiency of equipment.
Chinese patent if notification number is CN103464965A proposes a kind of renovation technique of furnace roller, by aligning, beating
It grinds, except tumor, the processing step of replacement spindle nose, completes the reparation to old plug, reduce the waste of resource, saved cost,
Extend service life.
Chinese patent if notification number is CN106282514A discloses a kind of heat treatment furnace roller repairing and reusing method, wraps
Include determining bending point, aligning and built-up welding, spindle nose replaces three steps and improves waste or old roll by repairing again to hearth roll
Utilization rate, the especially utilization rate of the body of roll, spindle nose bending deformation hearth roll reduces the buying expenses of hearth roll spare part, simultaneously
The furnace roller service life of reparation is suitable with original furnace roller.
Each position that the technical solution that above-mentioned patent provides is for impaired furnace roller has carried out a degree of reparation, still
It is not high for the reparation reducing degree of main furnace roller body surface, it is difficult to meet the subsequent high request used.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of renovation technique of high-temperature heat treatment furnace roller,
Body of roll performance is promoted, is prolonged the service life, production cost is saved.
In order to achieve the above objectives, the technical solution adopted by the present invention to solve the technical problems is: a kind of high-temperature heat treatment
The renovation technique of furnace roller, comprising the following steps:
A. turning removes the body surface damaged layer of impaired furnace roller；
B. pitted skin is made in body surface, improves body surface roughness；
C. it is equipped with and repairs substrate, substrate will be repaired and be put into smelting furnace heating melting；
D. furnace roller is put into the release mould cylinder of centrifugal casting machine as mandrel, be added the reparation substrate centrifugal casting of melting in
Body surface forms new furnace roller；
E. new furnace roller is taken out, body surface is finished.
Preferably, described repair the chemical component that substrate includes following weight percent: 24.0~26.0% Cr,
19.0~22.0% Ni, 1.5~2.5% Si, 1.0~1.5% Mn, 0.030~0.035% P, 0.1~0.2%
The Nb of the W of C, 8-10%, 0.3-0.5%.
Preferably, the cast temperature for repairing substrate is 1380-1420 DEG C.
Due to the application of the above technical scheme, the present invention have compared with prior art it is following the utility model has the advantages that
A kind of renovation technique of high-temperature heat treatment furnace roller proposed by the present invention, on the basis of original impaired furnace roller, turning removal
Body of roll damaged layer, then pitted skin is made in surface, reparation substrate layer is produced in body surface centrifugal casting by centrifugal casting machine, is formed
New furnace roller repairs substrate in the former body of roll main material Cr, Ni member to that can put into hot operation once again after body surface finishing
It on the basis of element is constant, also added the elements such as C, W, Nb, ensure that the high degrees of fusion for repairing substrate and the body of roll, and to repair
Furnace roller after multiple intensity at high operating temperatures and hardness are increased dramatically.Furnace roller after reparation is tried out and is consolidated in stainless steel tube
Molten heat treatment, service life were promoted from 1 month by 6 months or more, performance boost significant effect.
The present invention improves body of roll performance, extends service life, has saved production cost, brings considerable effect for enterprise
Benefit, as a kind of Green Remanufacturing Technique, promotion prospect is wide, and industrial value is huge.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of impaired furnace roller.
Fig. 2 is a kind of flow diagram of the renovation technique of high-temperature heat treatment furnace roller proposed by the present invention.
Specific embodiment
Combined with specific embodiments below, the contents of the present invention are described in further detail:
Embodiment 1:
A. turning removes the body surface damaged layer of impaired furnace roller；
B. pitted skin is made in body surface, improves body surface roughness；
C. be equipped with repair substrate, repair substrate include following weight percent chemical component: 24.0% Cr, 22.0%
Ni, 2.5% Si, 1.5% Mn, 0.035% P, 0.2% C, 10% W, 0.5% Nb, by repair substrate be put into
Smelting furnace heating melting；
D. furnace roller is put into the release mould cylinder of centrifugal casting machine as mandrel, be added the reparation substrate centrifugal casting of melting in
Body surface, cast temperature are 1380 DEG C, form new furnace roller；
E. new furnace roller is taken out, body surface is finished.
Embodiment 2:
A. turning removes the body surface damaged layer of impaired furnace roller；
B. pitted skin is made in body surface, improves body surface roughness；
C. be equipped with repair substrate, repair substrate include following weight percent chemical component: 26.0% Cr, 19.0%
Ni, 2.5% Si, 1.2% Mn, 0.030% P, 0.1% C, 8% W, 0.3% Nb, by repair substrate be put into
Smelting furnace heating melting；
D. furnace roller is put into the release mould cylinder of centrifugal casting machine as mandrel, be added the reparation substrate centrifugal casting of melting in
Body surface, cast temperature are 1405 DEG C, form new furnace roller；
E. new furnace roller is taken out, body surface is finished.
Embodiment 3:
A. turning removes the body surface damaged layer of impaired furnace roller；
B. pitted skin is made in body surface, improves body surface roughness；
C. be equipped with repair substrate, repair substrate include following weight percent chemical component: 25.0% Cr, 20.0%
Ni, 2.0% Si, 1.0% Mn, 0.032% P, 0.2% C, 9% W, 0.4% Nb, by repair substrate be put into
Smelting furnace heating melting；
D. furnace roller is put into the release mould cylinder of centrifugal casting machine as mandrel, be added the reparation substrate centrifugal casting of melting in
Body surface, cast temperature are 1420 DEG C, form new furnace roller；
E. new furnace roller is taken out, body surface is finished.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand the contents of the present invention and be implemented, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the scope of protection of the present invention.
Claims (3)
1. a kind of renovation technique of high-temperature heat treatment furnace roller, which comprises the following steps:
A. turning removes the body surface damaged layer of impaired furnace roller；
B. pitted skin is made in body surface, improves body surface roughness；
C. it is equipped with and repairs substrate, substrate will be repaired and be put into smelting furnace heating melting；
D. the reparation substrate centrifugal casting of melting is added in the body of roll as mandrel in the release mould cylinder for furnace roller being put into centrifugal casting machine
Surface forms new furnace roller；
E. new furnace roller is taken out, body surface is finished.
2. a kind of renovation technique of high-temperature heat treatment furnace roller according to claim 1, which is characterized in that the reparation substrate
Chemical component including following weight percent: 24.0~26.0% Cr, 19.0~22.0% Ni, 1.5~2.5%
Si, 1.0~1.5% Mn, 0.030~0.035% P, the Nb of the W of 0.1~0.2% C, 8-10%, 0.3-0.5%.
3. a kind of renovation technique of high-temperature heat treatment furnace roller according to claim 1, it is characterised in that: the reparation substrate
Cast temperature be 1380-1420 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942730.1A CN109047725A (en) | 2018-08-17 | 2018-08-17 | A kind of renovation technique of high-temperature heat treatment furnace roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942730.1A CN109047725A (en) | 2018-08-17 | 2018-08-17 | A kind of renovation technique of high-temperature heat treatment furnace roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109047725A true CN109047725A (en) | 2018-12-21 |
Family
ID=64687380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810942730.1A Pending CN109047725A (en) | 2018-08-17 | 2018-08-17 | A kind of renovation technique of high-temperature heat treatment furnace roller |
Country Status (1)
| Country | Link |
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| CN (1) | CN109047725A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687693A (en) * | 2020-06-17 | 2020-09-22 | 广西先进铝加工创新中心有限责任公司 | Manufacturing method of metal brush roller of roller-hearth heat treatment furnace |
| CN113667898A (en) * | 2021-09-01 | 2021-11-19 | 辽宁省亿联盛新材料有限公司 | High-vanadium high-speed steel composite roller and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382537A (en) * | 2001-02-06 | 2002-12-04 | 江文 | High-power composite roller for rolling steel |
| CN105127205A (en) * | 2015-08-31 | 2015-12-09 | 娄底市鸿亿新型耐磨材料厂（普通合伙） | Large bushing roll used for producing plate strips and preparation method thereof |
| CN105710333A (en) * | 2016-03-08 | 2016-06-29 | 黄力 | Centrifugal casting process for large heat-resistant steel furnace bottom roller body |
| CN107962167A (en) * | 2017-11-08 | 2018-04-27 | 昆明理工大学 | A kind of method that founding remanufactures roll |
-
2018
- 2018-08-17 CN CN201810942730.1A patent/CN109047725A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382537A (en) * | 2001-02-06 | 2002-12-04 | 江文 | High-power composite roller for rolling steel |
| CN105127205A (en) * | 2015-08-31 | 2015-12-09 | 娄底市鸿亿新型耐磨材料厂（普通合伙） | Large bushing roll used for producing plate strips and preparation method thereof |
| CN105710333A (en) * | 2016-03-08 | 2016-06-29 | 黄力 | Centrifugal casting process for large heat-resistant steel furnace bottom roller body |
| CN107962167A (en) * | 2017-11-08 | 2018-04-27 | 昆明理工大学 | A kind of method that founding remanufactures roll |
Non-Patent Citations (2)
| Title |
|---|
| 于海巢，马培德: "《金相工基础》", 30 June 1987, 科学普及出版社 * |
| 蒋清亮: "《工程材料与热处理》", 31 August 2011, 北京邮电大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687693A (en) * | 2020-06-17 | 2020-09-22 | 广西先进铝加工创新中心有限责任公司 | Manufacturing method of metal brush roller of roller-hearth heat treatment furnace |
| CN111687693B (en) * | 2020-06-17 | 2021-12-17 | 广西先进铝加工创新中心有限责任公司 | Manufacturing method of metal brush roller of roller-hearth heat treatment furnace |
| CN113667898A (en) * | 2021-09-01 | 2021-11-19 | 辽宁省亿联盛新材料有限公司 | High-vanadium high-speed steel composite roller and manufacturing method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |
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| RJ01 | Rejection of invention patent application after publication |