CN103447704B - A kind of sintering machine head bend renovation technique - Google Patents
A kind of sintering machine head bend renovation technique Download PDFInfo
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- CN103447704B CN103447704B CN201310009572.1A CN201310009572A CN103447704B CN 103447704 B CN103447704 B CN 103447704B CN 201310009572 A CN201310009572 A CN 201310009572A CN 103447704 B CN103447704 B CN 103447704B
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Abstract
The invention discloses a kind of sintering machine head bend renovation technique, described sintering machine head bend comprises bend base, outer curve and inner curve, and outer curve and inner curve form chassis bend, and chassis guide moves in chassis bend; Renovation technique comprises the reparation of chassis bend surface abrasion, between chassis bend and bend base, gap processes; Chassis bend surface abrasion is repaired, and adopts the method for multiple composition metal layering built-up welding.Adopt technique scheme, in conjunction with actual wear situation and matrix constituent performance and working condition, adopt multiple composition metal layering built-up welding and change the mode that track combines and repair trolley track, make it to recover original size and intensity, to meet need of production; Avoid solder side to peel off, welding deformation amount is excessive, affect original installation form; Solve wearing and tearing and cause the problems such as chassis sideslip, greatly reduce expense and repair time.<!--1-->
Description
Technical field
The invention belongs to the technical field that metallurgical industry is produced, relate to the equipment Repairing Technology of its continuous pallettype sintering machine, more particularly, the present invention relates to a kind of sintering machine head bend renovation technique.
Background technology
Steel works sintering chain-drive section bend is the important component part of continuous pallettype sintering machine, and point inside and outside bend two parts, are mainly used in return chassis and upwards overturn.General chassis bend is spliced into approximate arc by three sections of bends, is convenient to chassis and slides in interior outer curve.
After Long-Time Service, there are wearing and tearing in various degree in each section of interior outer curve, and each section of uneven distortion and the wearing and tearing accelerating bend of bend distortion.
As shown in Figure 1, trolley wheel to enter after bend in upwards switching process, owing to becoming sliding friction from original rolling friction between wheel and bend, causes bend to wear and tear.Affect chassis safe operation time serious, cause sideslip.As integral replacing, then cost is too high, and the repair time is long, usually needs 10 ~ 20 days.
Summary of the invention
The invention provides a kind of sintering machine head bend renovation technique, its objective is that to realize sintering machine head bend easier and repair efficiently.
To achieve these goals, the technical scheme that the present invention takes is:
Sintering machine head bend renovation technique provided by the invention, described sintering machine head bend comprises bend base, outer curve and inner curve, upwards overturn for return chassis, described outer curve and inner curve form chassis bend, and chassis guide moves in described chassis bend;
Described renovation technique comprises the reparation of chassis bend surface abrasion, between chassis bend and bend base, gap processes;
Chassis bend surface abrasion is repaired, and adopts the method for multiple composition metal layering built-up welding.
The composition of the wlding that described built-up welding adopts is:
Quality of parent material: 50Mn;
By the percentage of quality, wlding composition metal chemical composition is respectively:
C≤0.12；Si≤0.75；Mn≤2.50；P≤0.03；S≤0.03；Cr：25.0～28.0；Ni：20.0～22.0。
Described built-up welding, adopts welding method and string(er) bead welding method that heat input is low, the thickness≤3mm of every layer of welding bead; Ferrite content in weld metal depends on the cooling velocity of weld seam, controls interlayer temperature≤150 DEG C.
The present invention adopts technique scheme, provide one simply, sintering machine head bend recovery technique efficiently, in conjunction with sintering machine head trolley track actual wear situation and matrix constituent performance and working condition, draft for different wear extenies, the mode adopting multiple composition metal layering built-up welding and replacing track to combine repairs trolley track, make it to recover original size and intensity, to meet need of production; Adopt specific solder technology, avoid because of material difference cause solder side peels off, welding deformation amount is excessive, affect original installation form; Repaired by bend surface overlaying, basic its original performance of recovery, solves wearing and tearing and causes the problems such as chassis sideslip, greatly reduce rehabilitation expense and repair time.
Accompanying drawing explanation
Below the content expressed by the accompanying drawing of this description and the mark in figure are briefly described:
Fig. 1 is the sintering machine head elbow structure schematic diagram in the present invention.
Be labeled as in figure:
1, bend base, 2, chassis bend, 3, outer curve, 4, inner curve, 5, chassis guide.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Knot chain-drive section elbow structure in the present invention as shown in Figure 1, comprise bend base 1, outer curve 3 and inner curve 4, upwards overturn for return chassis, described outer curve 3 and inner curve 4 form chassis bend 2, and chassis guide 5 moves in described chassis bend 2;
In order to solve prior art Problems existing and overcome its defect, realize the goal of the invention that sintering machine head bend is easier and repair efficiently, the technical scheme that the present invention takes is:
Sintering machine head bend renovation technique provided by the invention, comprises the reparation of chassis bend 2 surface abrasion, between chassis bend 2 and bend base 1, gap processes; Described chassis bend 2 surface abrasion renovation technique comprises reparation selection, repairs the condition that will meet, repaired by bend surface overlaying, its original performance of basic recovery, solves wearing and tearing and causes the problems such as chassis sideslip, greatly reduce rehabilitation expense and repair time.
The reparation of chassis bend 2 surface abrasion, adopts the method for multiple composition metal layering built-up welding.The present invention adopts fixing solder technology, avoid because of the solder side that causes of material difference peel off, the original installation form of the excessive impact of welding deformation amount.
Concrete technology is: according to drawing requirement, in conjunction with sintering machine head trolley track actual wear situation, and matrix constituent performance and working condition, draft for different wear extenies, adopt the mode that multiple composition metal layering built-up welding and replacing track combine, repair trolley track, make it to recover original size and intensity, to meet need of production.Adopt above-mentioned specific solder technology, avoid because of the solder side that causes of material difference peel off, the original installation form of the excessive impact of welding deformation amount.
The composition of the wlding that described built-up welding adopts is:
Quality of parent material: 50Mn;
By the percentage of quality, wlding composition metal chemical composition is respectively:
C≤0.12；Si≤0.75；Mn≤2.50；P≤0.03；S≤0.03；Cr：25.0～28.0；Ni：20.0～22.0。
Adopt above-mentioned formula, meet the scuff resistance of facing surface, and not easily produce distortion and peel off.
Described built-up welding, adopts welding method and string(er) bead welding method that heat input is low, the thickness≤3mm of every layer of welding bead; Ferrite content in weld metal depends on the cooling velocity of weld seam, controls interlayer temperature≤150 DEG C.
In welding procedure, should adopt the welding method that heat input is low, operating technology should adopt string(er) bead technology, the thickness of every layer of welding bead should not be greater than 3mm; On the other hand, the ferrite content in weld metal depends on the cooling velocity of weld seam, control interlayer temperature preferably no more than 150 DEG C.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (1)
1. a sintering machine head bend renovation technique, described sintering machine head bend comprises bend base (1), outer curve (3) and inner curve (4), upwards overturn for return chassis, described outer curve (3) and inner curve (4) form chassis bend (2), and chassis guide (5) is motion in described chassis bend (2);
It is characterized in that:
Described renovation technique comprises chassis bend (2) surface abrasion reparation, between chassis bend (2) and bend base (1), gap processes;
Chassis bend (2) surface abrasion reparation, adopts the method for multiple composition metal layering built-up welding;
The composition of the wlding that described built-up welding adopts is:
Quality of parent material: 50Mn;
By the percentage of quality, wlding composition metal chemical composition is respectively: C≤0.12; Si≤0.75; Mn≤2.50; P≤0.03; S≤0.03; Cr:25.0 ~ 28.0; Ni:20.0 ~ 22.0; Surplus Fe;
Described built-up welding adopts the welding method and string(er) bead welding method that heat input is low, the thickness≤3mm of every layer of welding bead; Ferrite content in weld metal depends on the cooling velocity of weld seam, controls interlayer temperature≤150 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009572.1A CN103447704B (en) | 2013-01-10 | 2013-01-10 | A kind of sintering machine head bend renovation technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310009572.1A CN103447704B (en) | 2013-01-10 | 2013-01-10 | A kind of sintering machine head bend renovation technique |
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| CN103447704A CN103447704A (en) | 2013-12-18 |
| CN103447704B true CN103447704B (en) | 2016-03-16 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528554A (en) * | 2003-09-28 | 2004-09-15 | 冬 陈 | Surfacing welding electrode with anti liquid zinc and aluminium-containing zinc-base alloy corrosion |
| CN102363251A (en) * | 2011-10-13 | 2012-02-29 | 中国船舶重工集团公司第七二五研究所 | High-toughness all-austenitic stainless steel welding wire |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5087449B2 (en) * | 2008-03-28 | 2012-12-05 | 日立粉末冶金株式会社 | Manufacturing method of composite sintered machine parts |
| JP5544182B2 (en) * | 2009-02-04 | 2014-07-09 | 特殊電極株式会社 | Cured overlay welding composite wire, sinter cake support stand and downward suction type sintering machine using the same |
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2013
- 2013-01-10 CN CN201310009572.1A patent/CN103447704B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528554A (en) * | 2003-09-28 | 2004-09-15 | 冬 陈 | Surfacing welding electrode with anti liquid zinc and aluminium-containing zinc-base alloy corrosion |
| CN102363251A (en) * | 2011-10-13 | 2012-02-29 | 中国船舶重工集团公司第七二五研究所 | High-toughness all-austenitic stainless steel welding wire |
Non-Patent Citations (1)
| Title |
|---|
| 摆架式烧结机的安装;西安重型机械研究所烧结球团设备组;《重型机械》;19730630(第6期);第1-16页 * |
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| CN103447704A (en) | 2013-12-18 |
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