CN102717225B - Method for repairing damage of non-work surface of roller - Google Patents
Method for repairing damage of non-work surface of roller Download PDFInfo
- Publication number
- CN102717225B CN102717225B CN201210182476.2A CN201210182476A CN102717225B CN 102717225 B CN102717225 B CN 102717225B CN 201210182476 A CN201210182476 A CN 201210182476A CN 102717225 B CN102717225 B CN 102717225B
- Authority
- CN
- China
- Prior art keywords
- heating
- welding
- temperature
- damage location
- roll
- 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.)
- Expired - Fee Related
Links
Abstract
The invention relates to the technical field of repair of non-work surfaces of rollers and particularly relates to a process for repairing the damage of a roller. The process comprises the following steps: firstly, preheating and preserving the heat: after removing a fatigue layer or the defects of the surface of the damaged part of the non-work surface of the roller, locally heating the damaged part and carrying out heat preservation on the heated part during heating; secondly, welding: after stop preheating, welding the damaged part of the non-work surface of the roller at an interval of 5 mm to 10 mm and quickly knocking the damaged part to enable the damaged part to be continuously welded after being recovered to be original shape; thirdly, tempering and preserving the heat: after welding, locally heating the damaged part; and fourthly, trimming. According to the method disclosed by the invention, the damaged part of the non-work surface of a high-crisp and high-hardness alloy roller is repaired by adopting a conventional welding material, welding equipment, thermal treatment equipment and simple thermal treatment process, so that the dependence on the equipment caused by a non-work surface damage process of the roller is reduced and the repair cost is effectively reduced.
Description
Technical field
The present invention relates to roll repair welding technical field, is a kind of roll non-working surface damage rehabilitation method.
Background technology
It is comparatively general that iron and steel and non-ferrous metal calendering sector application milling train are rolled production, and in Rolling Production, roll is direct or mediate contact with roll metal, and making metal produce plastic deformation, is the primary deformable instrument of milling train.Roll assembling, transport, in use procedure because bearing runs inner circle, end face clashes into, cutting or assembling parts time easily cause the wearing and tearing of non-working surface, pull, burn, collision deformation, cracking equivalent damage, as repaired damage location not in time, eliminate roll defect, roll can cause roll internal stress to expand and occur fracture and equipment and the product loss such as bearing is stuck under the effect of high rotating speed, large roll-force and large bending roller force, milling train can be caused to catch fire and the serious accident such as casualties time serious.Therefore, breaker roll damage surface is repaired, and becomes and reduces enterprise's production cost, improves an important channel of milling train security.
Roll non-working surface recovery technique conventional is at present technique for overlaying, cold-welding technique, healant adhesive technology.
The technical scheme of prior art one and Problems existing thereof:
Roll overlaying technology: need roll to be placed in heating furnace before built-up welding to carry out overall preheating, surfacing welding is adopted to carry out REPAIR WELDING to damage location after heat treatment, heap postwelding also needs to adopt stainless steel electrode welding to carry out capping process to increase the intensity of facing surface, carries out turning or grinding after REPAIR WELDING.Problems existing: technique for overlaying need select special-use heaps welding rod, for the roll that often kind of alloying component is different with material, the welding rod model selected is not identical yet, with strong points due to welding rod, production and selling producer can not get ready the goods in a large number, and market is difficult to bought stock, the buying manufacturing cycle of welding rod special for special is long, and price is 3-5 times of common welding rod price, increases time and the fund cost of user's repaired roller.
The technical scheme of prior art two and Problems existing thereof:
Roll cold-welding technique: utilize charging capacitor, with 10
-3~ 10
-1second be electric discharge and interval total cycle, wherein 10
-6~ 10
-5second is ultrashort discharge time.Under the protection of argon gas; electrode bar (welding rod) and roll contact position can be heated to 8000 ~ 10000 DEG C; make the local material in this region high energy ionising; electrode bar (welding rod) under plasma metallurgy state high speed transfer to roller surface; and diffuse into roll top layer, form the sedimentary deposit of metallurgy type strong bonded.It is extremely short compared with inter-spike intervals time (It) next time that the principle realizing cold welding (heat input low) is discharge time (Pt), machine has enough relative dwell times, heat can by roll bulk diffusion to extraneous, and therefore the processed position of roll does not have the gathering of heat.Problems existing: the thickness of cold-welding technique welding forming is less, speed of welding is slow, and welding efficiency is lower than other welding manners, and cold welding equipment price is more than ten times of common welding machine price, causes cold welding welding cost far above common welding manner.
The technical scheme of prior art three and Problems existing thereof:
Healant adhesive technology: breaker roll damage surface carries out polishing, cleaning the suitable chemical adhesive material of rear selection, constructs at normal temperatures, links together same material or foreign material and roller surface, realizes the reparation of damage surface.Problems existing: the shortcoming of prior art three and problem: the roll damage surface of healant adhesive technology reparation easily causes the adhesive linkage of damage surface to throw off under the external cause actions such as ROLLING OIL burn into HTHP, distortion.
Summary of the invention
The invention provides a kind of roll non-working surface damage rehabilitation method, overcome the deficiency of above-mentioned prior art, it effectively can solve the problem that the requirement of roll non-working surface recovery technique to wlding, welding equipment, Equipment for Heating Processing, Technology for Heating Processing is higher, technical difficulty is large and rehabilitation cost is high conventional at present.
Technical scheme of the present invention is realized by following measures: a kind of roll non-working surface damage rehabilitation method, this technique is carried out in the steps below: the first step, preheating insulation: after removing the fatigue layer on roll non-working surface damage location surface or defect, local heat is carried out to damage location, in heating process, heating position is incubated; Second step, welding: after stopping preheating, breaker roll non-working surface damage location welds at interval of 5mm to 100mm distance, and knocks damage location rapidly, proceeds welding after damage location is resiled as far as possible; 3rd step, tempering is incubated: after welding, carry out local heat to weld, is incubated in heating process to heating position; 4th step, finishing: after position to be welded is cooled to room temperature, the unnecessary material at finishing distortion projection or solder-bump position, recovers the size and dimension requirement that roll requires.
Here is the further optimization and/or improvements to foregoing invention technical scheme:
Above-mentioned when carrying out local heat to weld, available roll bearing inner ring mounting heater or heating blanket are enclosed within damage location and carry out local heat, use heat-preservation cotton to be incubated heating position parcel in heating process.
During above-mentioned preheating, the temperature of heating source can be 250 DEG C to 300 DEG C, measure the central temperature at heating position with temperature measurer at interval of 1min to 5min, heating is stopped when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, the preheating insulation time is 5h to 15h.
During above-mentioned welding, argon arc welding machine and 3XX series stainless steel welding rod can be selected to weld, and the electric current of argon arc welding machine is 90A to 120A.
After above-mentioned stopping preheating in half a minute, breaker roll non-working surface damage location can carry out spending weldering or spot welding at interval of 5mm to 100mm distance, solder joint is no more than half a minute cool time, and the damage location that hits with a hammer rapidly, proceed full weld after damage location is resiled as far as possible.
During above-mentioned tempering, the temperature of heating source can be 250 DEG C to 300 DEG C, measure the central temperature at heating position with temperature measurer at interval of 1min to 5min, heating is stopped when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, tempering insulation time is 5h to 15h.
Above-mentioned finishing mode can be turning or polishing.
The present invention repairs the crisp height of height rigid alloy roller non-working surface damage location by adopting conventional wlding, welding equipment, Equipment for Heating Processing and simple and easy Technology for Heating Processing, reduce roll non-working surface damage technique to the dependency degree of equipment, effectively reduce rehabilitation cost.
Accompanying drawing explanation
Accompanying drawing 1 is process flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing 1, the invention will be further described:
As shown in Figure 1, this roll non-working surface damage rehabilitation method carries out in the steps below: the first step, preheating insulation: after removing the fatigue layer on roll non-working surface damage location surface or defect, carry out local heat to damage location, is incubated heating position in heating process; Second step, welding: after stopping preheating, breaker roll non-working surface damage location welds at interval of 5mm to 100mm distance, and knocks damage location rapidly, proceeds welding after damage location is resiled as far as possible; 3rd step, tempering is incubated: after welding, carry out local heat to weld, is incubated in heating process to heating position; 4th step, finishing: after position to be welded is cooled to room temperature, the unnecessary material at finishing distortion projection or solder-bump position, recovers the size and dimension requirement that roll requires.The damage of roll non-working surface comprises cracking, weares and teares, pulls, burns and collision deformation; Rolling face refers to that the roll surface that roll surface directly contacts with rolled metal or supporting roller, non-working surface refer to other surfaces except working face.
According to actual needs, above-mentioned roll non-working surface damage rehabilitation method can be made further optimization and/or improvements:
As shown in Figure 1, when carrying out local heat to damage location, being enclosed within weld with roll bearing inner ring mounting heater or heating blanket and carrying out local heat, in heating process, use heat-preservation cotton to be incubated heating position parcel.
As shown in Figure 1, during preheating, the temperature of heating source is 250 DEG C to 300 DEG C, measure the central temperature at heating position with temperature measurer at interval of 1min to 5min, heating is stopped when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, the preheating insulation time is 5h to 15h.
As shown in Figure 1, during welding, select argon arc welding machine and 3XX series stainless steel welding rod to weld, the electric current of argon arc welding machine is 90A to 120A.
As shown in Figure 1, stop after preheating in half a minute, breaker roll non-working surface damage location carries out spending weldering or spot welding at interval of 5mm to 100mm distance, and solder joint is no more than half a minute cool time, and the damage location that hits with a hammer rapidly, proceed full weld after damage location is resiled as far as possible.
As shown in Figure 1, during tempering, the temperature of heating source is 250 DEG C to 300 DEG C, measure the central temperature at heating position with temperature measurer at interval of 1min to 5min, heating is stopped when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, tempering insulation time is 5h to 15h.
As shown in Figure 1, finishing mode is turning or polishing.
Claims (2)
1. a roll non-working surface damage rehabilitation method, it is characterized in that carrying out in the steps below: the first step, preheating insulation: after removing the fatigue layer on roll non-working surface damage location surface or defect, carry out local heat to damage location, is incubated heating position in heating process; Second step, welding: after stopping preheating, breaker roll non-working surface damage location welds at interval of 5mm to 100mm distance, and knocks damage location rapidly, proceeds welding after damage location is resiled as far as possible; 3rd step, tempering is incubated: after welding, carry out local heat to weld, is incubated in heating process to heating position; 4th step, finishing: after position to be welded is cooled to room temperature, the unnecessary material at finishing distortion projection or solder-bump position, recovers the size and dimension requirement that roll requires; Wherein: when carrying out local heat to damage location, being enclosed within damage location with roll bearing inner ring mounting heater or heating blanket and carrying out local heat, in heating process, use heat-preservation cotton to be incubated heating position parcel; During preheating, the temperature of heating source is 250 DEG C to 300 DEG C, measures the central temperature at heating position at interval of 1min to 5min with temperature measurer, stops heating when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, the preheating insulation time is 5h to 15h; During welding, select argon arc welding machine and 3XX series stainless steel welding rod to weld, the electric current of argon arc welding machine is 90A to 120A;
After stopping preheating in half a minute, breaker roll non-working surface damage location carries out spending weldering or spot welding at interval of 5mm to 100mm distance, solder joint is no more than half a minute cool time, and the damage location that hits with a hammer rapidly, proceed full weld after damage location is resiled as far as possible; During tempering, the temperature of heating source is 250 DEG C to 300 DEG C, measures the central temperature at heating position at interval of 1min to 5min with temperature measurer, stops heating when temperature is elevated to 245 DEG C to 255 DEG C, continue heating when temperature is reduced to 195 DEG C to 205 DEG C, tempering insulation time is 5h to 15h.
2. roll non-working surface damage rehabilitation method according to claim 1, is characterized in that finishing mode is turning or polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182476.2A CN102717225B (en) | 2012-06-05 | 2012-06-05 | Method for repairing damage of non-work surface of roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182476.2A CN102717225B (en) | 2012-06-05 | 2012-06-05 | Method for repairing damage of non-work surface of roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102717225A CN102717225A (en) | 2012-10-10 |
| CN102717225B true CN102717225B (en) | 2015-05-20 |
Family
ID=46943166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210182476.2A Expired - Fee Related CN102717225B (en) | 2012-06-05 | 2012-06-05 | Method for repairing damage of non-work surface of roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102717225B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106271160A (en) * | 2016-08-31 | 2017-01-04 | 武汉瑞祥安精密制造有限责任公司 | A kind of welding technique producing little welding stress and small deformation |
| CN107695610B (en) * | 2017-10-30 | 2019-02-22 | 北京建筑大学 | A kind of prosthetic device for train wallboard local damage |
| CN108971883B (en) * | 2018-09-30 | 2019-11-15 | 上海吴泾电力工程有限责任公司 | Suitable for cheating the field repairing method of cavity space |
| CN112372106B (en) * | 2020-09-29 | 2022-05-03 | 中车长江车辆有限公司 | Repair welding method for repairing corrosion point on surface of parent metal |
| CN112935480B (en) * | 2021-03-25 | 2022-06-03 | 安徽马钢设备检修有限公司 | Repairing process for surface abrasion of large wheel fixing table base |
| CN113146140A (en) * | 2021-04-28 | 2021-07-23 | 卢改花 | Repairing method for worn supporting wheel of inner hole of electric shovel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118971A (en) * | 1989-09-29 | 1991-05-21 | Kobe Steel Ltd | Building-up roll for continuous casting |
| CN101003104A (en) * | 2006-09-22 | 2007-07-25 | 攀钢集团钢城企业总公司协力公司 | Built up welding technique of restoring roller for shape bar |
| CN101293300A (en) * | 2008-06-12 | 2008-10-29 | 上海施威焊接产业有限公司 | Renovation technique for phi2100x3400mm wrought steel support roll |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
| CN101733512A (en) * | 2009-11-26 | 2010-06-16 | 上海大学 | Method for quick repair welding, restoring and reproducing of high-alloy cold-working mould |
| CN101758359A (en) * | 2008-10-14 | 2010-06-30 | 上海和欣金属制品有限公司 | Backup roll reparation technique |
| CN102441760A (en) * | 2011-11-07 | 2012-05-09 | 山西鼎荣冷弯型钢有限公司 | Cold-bending roller welding repair method |
-
2012
- 2012-06-05 CN CN201210182476.2A patent/CN102717225B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118971A (en) * | 1989-09-29 | 1991-05-21 | Kobe Steel Ltd | Building-up roll for continuous casting |
| CN101003104A (en) * | 2006-09-22 | 2007-07-25 | 攀钢集团钢城企业总公司协力公司 | Built up welding technique of restoring roller for shape bar |
| CN101293300A (en) * | 2008-06-12 | 2008-10-29 | 上海施威焊接产业有限公司 | Renovation technique for phi2100x3400mm wrought steel support roll |
| CN101758359A (en) * | 2008-10-14 | 2010-06-30 | 上海和欣金属制品有限公司 | Backup roll reparation technique |
| CN101658986A (en) * | 2009-09-18 | 2010-03-03 | 武汉铁锚焊接材料股份有限公司 | Build-up welding rod for repairing Cr3 roller and build-up welding method |
| CN101733512A (en) * | 2009-11-26 | 2010-06-16 | 上海大学 | Method for quick repair welding, restoring and reproducing of high-alloy cold-working mould |
| CN102441760A (en) * | 2011-11-07 | 2012-05-09 | 山西鼎荣冷弯型钢有限公司 | Cold-bending roller welding repair method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102717225A (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102717225B (en) | Method for repairing damage of non-work surface of roller | |
| CN102441760B (en) | Cold-bending roller welding repair method | |
| CN102756235B (en) | Field welding repair method especially for larger and penetrating defects in steel casting with heavy wall thickness | |
| CN105436665A (en) | Surfacing reconstructed layer of large hot-rolled supporting roll Cr4 and method for repairing roll | |
| CN103481012A (en) | Welding repairing method for rolls | |
| CN101433990B (en) | Overlaying welding method of large area carbide alloy of workpiece wear layer | |
| CN103706921B (en) | Hot-rolling finishing mill backing roll build-up welding repair method | |
| CN107598334B (en) | Double online welding and restoring process of material axial workpiece | |
| CN103612000A (en) | Cold bend roller welding repairing method | |
| CN105478962B (en) | The method of large-scale cold rolling backing roll 70Cr3Mo built-up welding reconstruction layer and repaired roller | |
| CN109014518B (en) | Welding device and repairing process for train wheel die holder | |
| CN107138837B (en) | A kind of overlap resistance soldering method of high-intensity band steel of the carbon equivalent greater than 0.5 | |
| CN104148806B (en) | A kind of cast steel with high chromium roll top layer fatigue statistic rapid laser repair method | |
| CN109317789B (en) | Welding method for surfacing pipe plate of heat exchanger and T91 heat exchange pipe | |
| CN105364244B (en) | A kind of welding method of hard alloy and stainless steel compound bar pin | |
| CN105215510A (en) | The overlaying method of repair cold-rolling flat support roller | |
| WO2016110159A1 (en) | Method for welding and repairing rack crack of four-roll plate bending machine | |
| CN105414878A (en) | High-heat-resistance alloy steel casting defect repair method | |
| CN101658986A (en) | Build-up welding rod for repairing Cr3 roller and build-up welding method | |
| CN103464868A (en) | Technological process for surfacing hot rolled supporting roller | |
| CN101722385A (en) | Flux-cored wire and method for welding hot-rolled back-up roll by same | |
| CN110773839A (en) | Welding process method for preventing repair welding cracks of nickel-based alloy bent pipe | |
| CN107119272A (en) | A kind of method that port machine walks to take turns laser melting coating stainless steel coating | |
| CN107552961B (en) | A kind of method of LASER BEAM WELDING TiAl alloy | |
| CN104209639A (en) | Mold cutting edge repair welding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20210605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |