CN103481012A - Welding repairing method for rolls - Google Patents
Welding repairing method for rolls Download PDFInfo
- Publication number
- CN103481012A CN103481012A CN201310428039.9A CN201310428039A CN103481012A CN 103481012 A CN103481012 A CN 103481012A CN 201310428039 A CN201310428039 A CN 201310428039A CN 103481012 A CN103481012 A CN 103481012A
- Authority
- CN
- China
- Prior art keywords
- roll
- rolls
- welding
- damaged
- 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
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Classifications
-
- 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
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- 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
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- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
Abstract
The invention relates to a welding repairing method for rolls. The welding repairing method is characterized by comprising the following steps of (1) performing flaw detection on depths and lengths of fractures of cracked and damaged portions, and performing polishing and back chipping on the cracked and damaged portions of surfaces of rolls; (2) performing pre-heating treatment on the rolls; (3) performing repairing welding by using a surfacing process; (4) performing heat treatment after welding; (5) machining according to the requirement of a drawing; and (6) performing nondestructive testing and hardness measurement. According to the welding repairing method, the damaged rolls are repaired by a series of industrial means and processes. According to tracking statistics, the service lives of the repaired rolls are the same with those of new rolls, the surface hardness of the repaired rolls reaches HRC 56-60, so that the cost of a use unit on the rolls can be greatly reduced, and the purpose of reducing cost and increasing efficiency is achieved.
Description
Technical field
The present invention relates to a kind of roll welding repair method.
Background technology
Clod wash or Welded Pipe Roller in use can change because of local strength damage phenomenons such as causing greatly roll wearing and tearing to occur, collapse hole, crackle appears in roller surface, fracture of roller, roll hardness are inhomogeneous, thereby cause roll to be scrapped.All use the GCr15 material due to clod wash or Welded Pipe Roller, price is higher, and not yet finds at present to make damaged roll reach the restorative procedure of original performance, and therefore, how repaired roller extends roll working life becomes the key reduced production costs.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of technical scheme of roll welding repair method.
Described a kind of roll welding repair method is characterized in that the component that this roll contains following percentage by weight: C 1.50-2.20%, Si≤0.060%, Mn 0.40-1.20%, P≤0.030%, S≤0.025%, Cr 3.00-8.00%, Ni 0.00-1.50%, Mo 2.00-8.00%, V 2.00-9.00%, W 0.00-3.00%, Nb 0.00-0.85%, Al 0.00-1.20%, surplus is Fe; It is as follows that it repairs step: 1) cracking, damaged part are carried out to the penetration of fracture, length carrying out flaw detection, breaker roll face checking, the damaged part back chipping of being polished; 2) the breaker roll the pre-heat treatment of being heated; 3) adopt bead-welding technology to carry out repair welding; 4) post weld heat treatment; 5) carry out by drawing machining; 6) carrying out Non-Destructive Testing and hardness detects.
Described a kind of roll welding repair method, it is characterized in that described step 1) need be by roller surface wiped clean, degreasing and impurity, when the roll surface layer is damaged, the electricity consumption emery wheel area that will come off polishes smooth, polish to base metals, polishing thickness is 2 3mm, and the polishing scope enlarges 5mm on the scope basis that comes off again; During in length and breadth to the depth crackle, with carbon arc plane rifle, the crack plane is opened to 60 degree list V-butts when roll, plane to the degree of depth to the position that there is no crackle till, with the angle grinding machine, polish or file makes position to be welded surface clean bright and clean.
Described a kind of roll welding repair method, is characterized in that described step 2) select oxy-acetylene flame that whole weldering roller is heated to 100-150 ℃ comprehensively.
Described a kind of roll welding repair method, is characterized in that in described step 3) adopting the surface layer overlaying method when the roll surface layer is damaged; , adopt and open the double V-groove overlaying method during in length and breadth to the depth crackle when roll.
Described a kind of roll welding repair method, is characterized in that described step 4) puts into tempering furnace by repaired roller and heat to keeping 6 hours after 150-180 ℃, and then blowing out makes it in stove, with oil temperature, slowly cool to room temperature.
Described a kind of roll welding repair method, is characterized in that described step 6) is with GB/T 6402-1991 steel forgings supersonic testing method, with HANWEI HS606 supersonic detector, whole surfacing part detected.
The present invention is repaired the roll damaged by a series of industrial means operations, through following the tracks of statistics, roll after reparation and same life-span of the roll of new system, case hardness reaches HRC56-60, so just greatly reduce the spending of applying unit in the roll use, thereby reached the purpose of cost efficiency.
The specific embodiment
Method, the component that roll contains following percentage by weight are repaiied in roll welding of the present invention: C 1.50-2.20%, Si≤0.060%, Mn 0.40-1.20%, P≤0.030%, S≤0.025%, Cr 3.00-8.00%, Ni 0.00-1.50%, Mo 2.00-8.00%, V 2.00-9.00%, W 0.00-3.00%, Nb 0.00-0.85%, Al 0.00-1.20%, surplus is Fe; It is as follows that it repairs step: 1) cracking, damaged part are carried out to the penetration of fracture, length carrying out flaw detection, breaker roll face checking, the damaged part back chipping of being polished; 2) the breaker roll the pre-heat treatment of being heated; 3) adopt bead-welding technology to carry out repair welding; 4) post weld heat treatment; 5) carry out by drawing machining; 6) carrying out Non-Destructive Testing and hardness detects.
Above-mentioned steps 1) need be by roller surface wiped clean, degreasing and impurity, when the roll surface layer is damaged, the electricity consumption emery wheel area that will come off polishes smooth, and polishes to base metals, and polishing thickness is 2 3mm, and the polishing scope enlarges 5mm on the scope basis that comes off again; During in length and breadth to the depth crackle, with carbon arc plane rifle, the crack plane is opened to 60 degree list V-butts when roll, plane to the degree of depth to the position that there is no crackle till, with the angle grinding machine, polish or file makes position to be welded surface clean bright and clean.
Above-mentioned steps 2) select oxy-acetylene flame that whole weldering roller is heated to 100-150 ℃ comprehensively.
Above-mentioned steps 3) in, when the roll surface layer is damaged, adopt the surface layer overlaying method; , adopt and open the double V-groove overlaying method during in length and breadth to the depth crackle when roll.
Above-mentioned steps 4) repaired roller is put into to tempering furnace and heated to keeping 6 hours after 150-180 ℃, then blowing out makes it in stove, with oil temperature, slowly cool to room temperature.
Above-mentioned steps 6), with GB/T 6402-1991 steel forgings supersonic testing method, with HANWEI HS606 supersonic detector, whole surfacing part is detected.
The present invention is repaired the roll damaged by a series of industrial means operations, through following the tracks of statistics, roll after reparation and same life-span of the roll of new system, case hardness reaches HRC56-60, so just greatly reduce the spending of applying unit in the roll use, thereby reached the purpose of cost efficiency.
Claims (6)
1. a roll welding repair method, is characterized in that the component that this roll contains following percentage by weight: C 1.50-2.20%, Si≤0.060%, Mn 0.40-1.20%, P≤0.030%, S≤0.025%, Cr 3.00-8.00%, Ni 0.00-1.50%, Mo 2.00-8.00%, V 2.00-9.00%, W 0.00-3.00%, Nb 0.00-0.85%, Al 0.00-1.20%, surplus is Fe; It is as follows that it repairs step: 1) cracking, damaged part are carried out to the penetration of fracture, length carrying out flaw detection, breaker roll face checking, the damaged part back chipping of being polished; 2) the breaker roll the pre-heat treatment of being heated; 3) adopt bead-welding technology to carry out repair welding; 4) post weld heat treatment; 5) carry out by drawing machining; 6) carrying out Non-Destructive Testing and hardness detects.
2. a kind of roll welding repair method according to claim 1, it is characterized in that described step 1) need be by roller surface wiped clean, degreasing and impurity, when the roll surface layer is damaged, the electricity consumption emery wheel area that will come off polishes smooth, polish to base metals, polishing thickness is 2 3mm, and the polishing scope enlarges 5mm on the scope basis that comes off again; During in length and breadth to the depth crackle, with carbon arc plane rifle, the crack plane is opened to 60 degree list V-butts when roll, plane to the degree of depth to the position that there is no crackle till, with the angle grinding machine, polish or file makes position to be welded surface clean bright and clean.
3. a kind of roll welding repair method according to claim 1, is characterized in that described step 2) select oxy-acetylene flame that whole weldering roller is heated to 100-150 ℃ comprehensively.
4. a kind of roll welding repair method according to claim 1, is characterized in that in described step 3) adopting the surface layer overlaying method when the roll surface layer is damaged; , adopt and open the double V-groove overlaying method during in length and breadth to the depth crackle when roll.
5. a kind of roll welding repair method according to claim 1, is characterized in that described step 4) puts into tempering furnace by repaired roller and heat and keep 6 hours after 150-180 ℃, and then blowing out makes it in stove, with oil temperature, slowly cool to room temperature.
6. a kind of roll welding repair method according to claim 1, is characterized in that described step 6) is with GB/T 6402-1991 steel forgings supersonic testing method, with HANWEI HS606 supersonic detector, whole surfacing part detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428039.9A CN103481012A (en) | 2013-09-22 | 2013-09-22 | Welding repairing method for rolls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428039.9A CN103481012A (en) | 2013-09-22 | 2013-09-22 | Welding repairing method for rolls |
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| Publication Number | Publication Date |
|---|---|
| CN103481012A true CN103481012A (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310428039.9A Pending CN103481012A (en) | 2013-09-22 | 2013-09-22 | Welding repairing method for rolls |
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| CN (1) | CN103481012A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526253A (en) * | 2015-01-09 | 2015-04-22 | 江苏龙胜机床制造有限公司 | Four-roll plate bending machine rack crack welding and repairing method |
| CN104526254A (en) * | 2015-01-09 | 2015-04-22 | 江苏龙胜机床制造有限公司 | Four-roll plate bending machine rack fracture welding and repairing method |
| CN104668881A (en) * | 2015-01-19 | 2015-06-03 | 江苏久日数控机床有限公司 | Repairing method for roll of numerical-control gantry type tube maker |
| CN104801922A (en) * | 2014-01-26 | 2015-07-29 | 宝山钢铁股份有限公司 | Method for repairing fractured roller way spindle nose |
| 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 |
| CN105328397A (en) * | 2014-08-12 | 2016-02-17 | 洛阳九创重型机械有限公司 | Defect repairing technology for metal forging |
| CN106334900A (en) * | 2016-10-27 | 2017-01-18 | 辽宁工程技术大学 | Overlaying welding repair method used for worn middle plate of middle slot of scraper conveyer |
| CN107052701A (en) * | 2017-03-31 | 2017-08-18 | 安徽再制造工程设计中心有限公司 | A kind of roll overlaying technique |
| CN107400768A (en) * | 2017-08-17 | 2017-11-28 | 安徽卓煌机械设备有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107498263A (en) * | 2017-09-04 | 2017-12-22 | 中国航发北京航空材料研究院 | Martensitic stain less steel engine crankcase ultrasonic impact aids in argon arc welding restorative procedure |
| CN107755966A (en) * | 2016-08-18 | 2018-03-06 | 合肥东方节能科技股份有限公司 | A kind of renovation technique of milling train loop back roll |
| CN109746627A (en) * | 2019-03-15 | 2019-05-14 | 盛安建设集团有限公司 | Import All-terrain truck crane telescopic oil cylinder cylinder sleeve crackle oil leak restorative procedure |
| CN110253207A (en) * | 2019-07-17 | 2019-09-20 | 孙京钢 | A kind of curling furnace drum crack restorative procedure |
| CN111054996A (en) * | 2020-01-06 | 2020-04-24 | 邯郸市永固冶金备件有限公司 | Roll fish scale pattern accurate hole pattern approaching surfacing repair process |
| CN111283342A (en) * | 2020-02-25 | 2020-06-16 | 中国神华能源股份有限公司国华电力分公司 | Workpiece defect repairing method and workpiece defect repairing robot |
| CN112935705A (en) * | 2021-03-23 | 2021-06-11 | 中国能源建设集团西北电力建设工程有限公司 | Metal surface welding repair process |
| CN113478170A (en) * | 2021-08-18 | 2021-10-08 | 重庆大学 | Welding and forging composite process and device for remanufacturing surface of metallurgical roller way |
| CN114310148A (en) * | 2021-09-30 | 2022-04-12 | 内蒙古联晟新能源材料有限公司 | Method for repairing surface quality of working roller |
-
2013
- 2013-09-22 CN CN201310428039.9A patent/CN103481012A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801922A (en) * | 2014-01-26 | 2015-07-29 | 宝山钢铁股份有限公司 | Method for repairing fractured roller way spindle nose |
| CN105328397A (en) * | 2014-08-12 | 2016-02-17 | 洛阳九创重型机械有限公司 | Defect repairing technology for metal forging |
| CN104526254A (en) * | 2015-01-09 | 2015-04-22 | 江苏龙胜机床制造有限公司 | Four-roll plate bending machine rack fracture welding and repairing method |
| WO2016110159A1 (en) * | 2015-01-09 | 2016-07-14 | 江苏江海机床集团有限公司 | Method for welding and repairing rack crack of four-roll plate bending machine |
| CN104526253A (en) * | 2015-01-09 | 2015-04-22 | 江苏龙胜机床制造有限公司 | Four-roll plate bending machine rack crack welding and repairing method |
| CN104668881A (en) * | 2015-01-19 | 2015-06-03 | 江苏久日数控机床有限公司 | Repairing method for roll of numerical-control gantry type tube maker |
| 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 |
| CN107755966A (en) * | 2016-08-18 | 2018-03-06 | 合肥东方节能科技股份有限公司 | A kind of renovation technique of milling train loop back roll |
| CN106334900B (en) * | 2016-10-27 | 2018-08-07 | 辽宁工程技术大学 | The build-up welding repair method of plate in a kind of Scraper Conveyer Middle Trough for abrasion |
| CN106334900A (en) * | 2016-10-27 | 2017-01-18 | 辽宁工程技术大学 | Overlaying welding repair method used for worn middle plate of middle slot of scraper conveyer |
| CN107052701A (en) * | 2017-03-31 | 2017-08-18 | 安徽再制造工程设计中心有限公司 | A kind of roll overlaying technique |
| CN107400768B (en) * | 2017-08-17 | 2019-04-16 | 惠州市光大水泥企业有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107400768A (en) * | 2017-08-17 | 2017-11-28 | 安徽卓煌机械设备有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107498263B (en) * | 2017-09-04 | 2019-06-04 | 中国航发北京航空材料研究院 | Martensitic stain less steel engine crankcase ultrasonic impact assists argon arc welding restorative procedure |
| CN107498263A (en) * | 2017-09-04 | 2017-12-22 | 中国航发北京航空材料研究院 | Martensitic stain less steel engine crankcase ultrasonic impact aids in argon arc welding restorative procedure |
| CN109746627A (en) * | 2019-03-15 | 2019-05-14 | 盛安建设集团有限公司 | Import All-terrain truck crane telescopic oil cylinder cylinder sleeve crackle oil leak restorative procedure |
| CN110253207A (en) * | 2019-07-17 | 2019-09-20 | 孙京钢 | A kind of curling furnace drum crack restorative procedure |
| CN111054996A (en) * | 2020-01-06 | 2020-04-24 | 邯郸市永固冶金备件有限公司 | Roll fish scale pattern accurate hole pattern approaching surfacing repair process |
| CN111283342A (en) * | 2020-02-25 | 2020-06-16 | 中国神华能源股份有限公司国华电力分公司 | Workpiece defect repairing method and workpiece defect repairing robot |
| CN112935705A (en) * | 2021-03-23 | 2021-06-11 | 中国能源建设集团西北电力建设工程有限公司 | Metal surface welding repair process |
| CN112935705B (en) * | 2021-03-23 | 2022-08-23 | 中国能源建设集团西北电力建设工程有限公司 | Metal surface welding repair process |
| CN113478170A (en) * | 2021-08-18 | 2021-10-08 | 重庆大学 | Welding and forging composite process and device for remanufacturing surface of metallurgical roller way |
| CN113478170B (en) * | 2021-08-18 | 2022-06-24 | 重庆大学 | Welding and forging composite process and device for remanufacturing surface of metallurgical roller way |
| CN114310148A (en) * | 2021-09-30 | 2022-04-12 | 内蒙古联晟新能源材料有限公司 | Method for repairing surface quality of working roller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |
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| WD01 | Invention patent application deemed withdrawn after publication |