CN104388875A - Additive manufacturing process of roller - Google Patents
Additive manufacturing process of roller Download PDFInfo
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- CN104388875A CN104388875A CN201410603558.9A CN201410603558A CN104388875A CN 104388875 A CN104388875 A CN 104388875A CN 201410603558 A CN201410603558 A CN 201410603558A CN 104388875 A CN104388875 A CN 104388875A
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- roller
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Abstract
The invention relates to an additive manufacturing process of a roller. The additive manufacturing process comprises the following process steps: (1) carrying out pre-treatment: a) degreasing and removing oil; b) removing rust: removing rust on the surface of the roller; c) phosphating, wherein after the roller is phosphorized, the roller can be prevented from being corroded and the adhesion force between the sprayed coating and the roller can also be improved; d) blasting; e) surfacing; (2) spraying: spraying an Ni-33% WC coating by virtue of a supersonic flame spraying device; and (3) carrying out after-treatment. By adopting the Ni-33% WC coating, the problems of poor wear resistance and relatively low corrosion resistance of the existing tungsten carbide coating are solved, the microstructure and structure of the coating on the surface of the material are improved, the wear resistance of the material is increased and meanwhile, the Ni-33% WC coating has significant effect on the increase of the improved overall mechanical properties; and by applying the Ni-33% WC coating on the roller, the property of the roller is greatly improved, the repair of the worn roller is achieved, the maintenance cost of the roller is decreased and the service life of the roller is prolonged.
Description
Technical field
The present invention relates to re-manufacturing technology field, a kind of roll increases material technique specifically.
Background technology
Milling train is the equipment realizing metal rolled process.Roll is the instrument making (stocking) metal produce viscous deformation, is the important consumable part determining rolling mill efficiency and mill bar quality.Roll is the strength member on Steel Mill's milling train, utilize a pair or one group of roll rolls time the pressure that produces to roll stone roller steel.Unrelieved stress and thermal stresses can be produced in the preparatory process of roll before manufacturing and using.Receive again the effect of various cyclic stress during use further, include bending, torsion, shearing, contact stress and thermal stresses etc.It is improper that roll cools after a procedure, also can be subject to the infringement of thermal stresses.So roll is except wearing and tearing, also often there is crackle, rupture, peel off, various local damage and the surface damage such as impression.When damaging appears in roll, continue again use will cause rolling failure or effect of rolling bad, and scrapping of roll may be caused, described in order to deal with problems, people usually to there being the roll of damage to repair, thus extend its work-ing life, in addition, the reparation of roll can also economize on resources, and often adopts the position to damaging to carry out increase material, thus carry out the material that supplementary roll loses because of damage in repair process.Generally need roll clamping on special reparation lathe, then utilize built-up welding breaker roll to repair, repair the defects such as roll sand holes, scuffing, then carry out spray-on coating on breaker roll surface, thus reach the effect of repairing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of roll and increases material technique.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of roll increases material technique, comprises following processing step:
(1) process in early stage:
A) degreasing, oil removing;
B) eliminate rust; The rust of removing roller surface;
C) phosphatization; Roll can be prevented after phosphatization to be corroded, also can to improve the coating of spraying and the sticking power of roll;
D) sandblasting;
E) built-up welding; The defect on Ni60 breaker roll surface is adopted to repair;
(2) spray: adopt supersonic velocity flame plating equipment spraying Ni-33%WC coating;
(3) post-processed: sand belt polished finish.
Spray parameters in described step (2) is: frock rotating speed is 400r/min; Flame distance is 25cm; Powder sending quantity control voltage is 5v; Flame temperature is 2300 DEG C; Spray gun translational speed is 0.03m/s;
Gas flow: air is 135L/H, oxygen is 55L/H, and propane is 50L/H;
Equipment gaseous tension: propane pressure is not less than 0.5MPa; Oxygen pressure is not less than 0.4MPa; Air pressure is not less than 0.6MPa; Hydrogen pressure is not less than 0.1MPa, and nitrogen pressure is not less than 0.2MPa.
The material that described built-up welding adopts is Ni60.
In described step (2), the Ni-33%WC coating of spraying comprises following component: Ni60A is 64%, WC is 33%, and auxiliary agent is 2%, and trace element is 1%.
Described auxiliary agent is Al
2o
3.Auxiliary agent A l
2o
3for improving material hardness and toughness.
Described trace element comprises Cr, Si, B, Fe.
The invention has the beneficial effects as follows: the present invention adopts Ni-33%WC coating, solve the problem that existing tungsten carbide coating wear resistance is poor, erosion resistance is lower, improve the microtexture of material surface coating, structure, improve the wear resisting property of material surface, also there is significant effect to the comprehensive mechanical property improving improvement simultaneously, Ni-33%WC is applied the coating on roll, improve the performance of roll greatly, achieve the reparation of the roll after wearing and tearing, reduce the cost that roll is safeguarded, extend the work-ing life of roll.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below the present invention being set forth further.
Embodiment one:
A kind of roll increases material technique, comprises following processing step:
(1) process in early stage:
A) degreasing, oil removing;
B) eliminate rust; The rust of removing roller surface;
C) phosphatization; Roll can be prevented after phosphatization to be corroded, also can to improve the coating of spraying and the sticking power of roll;
D) sandblasting;
E) built-up welding; The defect on Ni60 breaker roll surface is adopted to repair;
(2) spray: adopt supersonic velocity flame plating equipment spraying Ni-33%WC coating;
Spray parameters in described step (2) is: frock rotating speed is 400r/min; Flame distance is 25cm; Powder sending quantity control voltage is 5v; Flame temperature is 2300 DEG C; Spray gun translational speed is 0.03m/s;
Gas flow: air is 135L/H, oxygen is 55L/H, and propane is 50L/H;
Equipment gaseous tension: propane pressure is not less than 0.5MPa; Oxygen pressure is not less than 0.4MPa; Air pressure is not less than 0.6MPa; Hydrogen pressure is not less than 0.1MPa, and nitrogen pressure is not less than 0.2MPa.
The material that described built-up welding adopts is Ni60.
In described step (2), the Ni-33%WC coating of spraying comprises following component: Ni60A is 64%, WC is 33%, and auxiliary agent is 2%, and trace element is 1%.
Described auxiliary agent is Al
2o
3.Auxiliary agent A l
2o
3for improving material hardness and toughness.
Described trace element comprises Cr, Si, B, Fe.
(3) post-processed: sand belt polished finish.
In order to prove actual effect of the present invention, the roll after spy implements embodiment one by experiment detects, and the data of detected result are as follows:
| Hardness (HRC) | Coating density (g/cm 3) | Coat-thickness (mm) |
| 65 | 11.22 | 5 |
From above-mentioned experimental data, the hardness being sprayed on the coating on roll reaches HRC65, and coat-thickness can reach 5 millimeters, and the bonding strength of coating is better, and the density of tissue is better, and coating density can reach 11.22g/cm
3.
As can be seen here, after adopting the present invention, the performance of roll can be improved, achieve the reparation of roll, and repairing effect is better, can extend the work-ing life of roll, reduce maintenance cost.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not by the restriction of step embodiment; the just principle of the present invention described in step embodiment and specification sheets; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. roll increases a material technique, it is characterized in that: comprise following processing step:
(1) process in early stage:
A) degreasing, oil removing;
B) eliminate rust;
C) phosphatization;
D) sandblasting;
E) built-up welding;
(2) spray: adopt supersonic velocity flame plating equipment spraying Ni-33%WC coating;
(3) post-processed: sand belt polished finish.
2. a kind of roll according to claim 1 increases material technique, it is characterized in that: the spray parameters in described step (2) is: frock rotating speed is 400r/min; Flame distance is 25cm; Powder sending quantity control voltage is 5v; Flame temperature is 2300 DEG C; Spray gun translational speed is 0.03m/s;
Gas flow: air is 135L/H, oxygen is 55L/H, and propane is 50L/H;
Equipment gaseous tension: propane pressure is not less than 0.5MPa; Oxygen pressure is not less than 0.4MPa; Air pressure is not less than 0.6MPa; Hydrogen pressure is not less than 0.1MPa, and nitrogen pressure is not less than 0.2MPa.
3. a kind of roll according to claim 1 increases material technique, it is characterized in that: the material that described built-up welding adopts is Ni60.
4. a kind of roll according to claim 1 increases material technique, it is characterized in that: in described step (2), the Ni-33%WC coating of spraying comprises following component: Ni60A is 64%, WC is 33%, and auxiliary agent is 2%, and trace element is 1%.
5. a kind of roll according to claim 4 increases material technique, it is characterized in that: described auxiliary agent is Al
2o
3.
6. a kind of roll according to claim 5 increases material technique, it is characterized in that: described trace element comprises Cr, Si, B, Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603558.9A CN104388875A (en) | 2014-10-30 | 2014-10-30 | Additive manufacturing process of roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603558.9A CN104388875A (en) | 2014-10-30 | 2014-10-30 | Additive manufacturing process of roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104388875A true CN104388875A (en) | 2015-03-04 |
Family
ID=52606830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410603558.9A Pending CN104388875A (en) | 2014-10-30 | 2014-10-30 | Additive manufacturing process of roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104388875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107195A (en) * | 2015-12-07 | 2017-08-29 | 西迪技术股份有限公司 | Metallic matrix composition and its manufacture method |
| CN110293131A (en) * | 2019-06-27 | 2019-10-01 | 西峡龙成特种材料有限公司 | A kind of heat resistant and wear resistant roller and its production technology |
| US11313176B2 (en) | 2017-10-31 | 2022-04-26 | Schlumberger Technology Corporation | Metal matrix composite material for additive manufacturing of downhole tools |
Citations (4)
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| CN101580939A (en) * | 2009-06-19 | 2009-11-18 | 吉林大学 | Method for preparing metallic matrix composite coating reinforced by tungsten carbide ceramics particles |
| CN102343497A (en) * | 2011-11-23 | 2012-02-08 | 马鞍山市恒意机械有限责任公司 | Method for reconstructing surface of mill roll |
| CN103103470A (en) * | 2013-01-11 | 2013-05-15 | 广州有色金属研究院 | Anti-sticking coating |
| CN103469142A (en) * | 2013-09-27 | 2013-12-25 | 山东大学 | Method for spraying anti-abrasion alloy on surface of red copper by means of hypersonic flames |
-
2014
- 2014-10-30 CN CN201410603558.9A patent/CN104388875A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580939A (en) * | 2009-06-19 | 2009-11-18 | 吉林大学 | Method for preparing metallic matrix composite coating reinforced by tungsten carbide ceramics particles |
| CN102343497A (en) * | 2011-11-23 | 2012-02-08 | 马鞍山市恒意机械有限责任公司 | Method for reconstructing surface of mill roll |
| CN103103470A (en) * | 2013-01-11 | 2013-05-15 | 广州有色金属研究院 | Anti-sticking coating |
| CN103469142A (en) * | 2013-09-27 | 2013-12-25 | 山东大学 | Method for spraying anti-abrasion alloy on surface of red copper by means of hypersonic flames |
Non-Patent Citations (3)
| Title |
|---|
| 沈承金等: "《材料热处理与表面工程》", 31 August 2011 * |
| 陈传忠: "WC/Ni60A等离子喷涂层的相结构分析", 《材料研究学报》 * |
| 马永会等: "WC/Ni60等离子喷涂层的耐磨粒磨损特性研究", 《新技术新工艺》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107195A (en) * | 2015-12-07 | 2017-08-29 | 西迪技术股份有限公司 | Metallic matrix composition and its manufacture method |
| CN107107195B (en) * | 2015-12-07 | 2019-08-02 | 西迪技术股份有限公司 | Metal-based combo object and its manufacturing method |
| US10941619B2 (en) | 2015-12-07 | 2021-03-09 | Seed Technologies Corp., Ltd. | Metal matrix compositions and methods for manufacturing same |
| US11313176B2 (en) | 2017-10-31 | 2022-04-26 | Schlumberger Technology Corporation | Metal matrix composite material for additive manufacturing of downhole tools |
| CN110293131A (en) * | 2019-06-27 | 2019-10-01 | 西峡龙成特种材料有限公司 | A kind of heat resistant and wear resistant roller and its production technology |
| CN110293131B (en) * | 2019-06-27 | 2021-02-09 | 西峡龙成特种材料有限公司 | High-temperature-resistant wear-resistant roller and production process thereof |
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Application publication date: 20150304 |
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