CN201645924U - Wear-resistant structure of wear-resistant part - Google Patents

Wear-resistant structure of wear-resistant part Download PDF

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Publication number
CN201645924U
CN201645924U CN2010201256578U CN201020125657U CN201645924U CN 201645924 U CN201645924 U CN 201645924U CN 2010201256578 U CN2010201256578 U CN 2010201256578U CN 201020125657 U CN201020125657 U CN 201020125657U CN 201645924 U CN201645924 U CN 201645924U
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CN
China
Prior art keywords
wear
resistant
welding
overlaying
wearing piece
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Expired - Fee Related
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CN2010201256578U
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Chinese (zh)
Inventor
潘胡江
王雷
吴前松
叶璐
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Anhui Conch Kawasaki Equipment Manufacturing Co ltd
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Anhui Conch Kawasaki Equipment Manufacturing Co ltd
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Publication date
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Priority to CN2010201256578U priority Critical patent/CN201645924U/en
Application granted granted Critical
Publication of CN201645924U publication Critical patent/CN201645924U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a wear-resistant structure of a wear-resistant part. The technical scheme of the wear-resistant structure includes that an overlaying transition layer (3) is arranged between a wear-resistant part body (1) and an overlaying wear-resistant layer (2), the overlaying transition layer (3) adopts an overlaying structure composed of a plurality of welding beads, and materials of the overlaying transition layer (3) are the same with or similar to those of the wear-resistant part body (1). By adopting the technical scheme, the wear-resistant structure enables the overlaying wear-resistant layer to be welded with the wear-resistant part body more firmly, reduces the costs of wear-resistant materials, breaks through a traditional mode of eliminating welding stress by preheating, leads the overlaying wear-resistant layer to have cracking grains by the aid of technological measures to release stress generated in overlaying process, prevents blank parts from cracking to cause abandonment, and can effectively prolong the service life of the wear-resistant part and improve the repair efficiency of the same.

Description

A kind of abrasion-proof structure of wearing piece
Technical field
The utility model belongs to the technical field of cement manufacture plant, relates to the abrasion-proof structure of its metal part.Specifically, the utility model relates to a kind of abrasion-proof structure of wearing piece.
Background technology
In manufacture of cement, large-scale Vertical Mill is the nucleus equipment of grog, raw material preparation and cement grinding system.Because working media is slag, sandstone, lime stone etc., material hardness is very high, and in broken and process of lapping, workpiece such as mill, grinding roller are worn and impact.
Promote the hard-face overlaying welding recovery technique in the middle and later periods nineties both at home and abroad, both saved fund, improved the use mission of workpiece itself again.In the process of built-up welding, distortion and cracking for fear of workpiece prevent scrapping of wearing piece, adopt the mode of preheating to eliminate welding stress usually, but because wearing piece quantity is many, Heavy Weight, the operability of preheating work is relatively poor, inconvenient, and cost is higher.
The utility model content
In order to address the above problem, the utility model provides a kind of abrasion-proof structure of wearing piece, its objective is the service life and the remediation efficiency that improve wearing piece.
To achieve these goals, the technical scheme taked of the utility model is:
The abrasion-proof structure of this wearing piece provided by the utility model, comprise wearing piece body, build-up wear-resistant layer, the material of described wearing piece body is a common straightcarbon steel, the material of described build-up wear-resistant layer is the hypereutectic high-chromium alloy, described abrasion-proof structure is for being provided with the built-up welding transition zone between wearing piece body and build-up wear-resistant layer, described built-up welding transition zone adopts the built-up welding structure that is made of many welding beads, and its material is identical or close with the material of described wearing piece body.
Described build-up wear-resistant layer is provided with equally distributed segmentation crack.
Second problem that the utility model also solves be, the repair machining process of the abrasion-proof structure of above-mentioned wearing piece is provided, and its goal of the invention is identical with technique scheme, and the technical scheme of described repair machining process is:
Described abrasion-proof structure adopts bead-welding technology, and built-up welding successively goes out built-up welding transition zone and build-up wear-resistant layer; In the process of the described build-up wear-resistant layer of built-up welding, adopt open arc welding air-cooled, carry out air-cooled immediately to the welding bead that just has been welded into; Or set up sprayer unit, to the welding bead that just the has been welded into cooling of spraying immediately; Above-mentioned dual mode makes the build-up wear-resistant layer produce segmentation crack.
Described repair machining process is at first removed the surperficial remaining wearing layer of wearing piece body to be repaired, then at the described built-up welding transition zone of the surface overlaying of wearing piece body, and makes on built-up welding transition zone formation polishing surface.
The utility model adopts technique scheme, adopts the built-up welding transition zone, makes the welding of build-up wear-resistant layer and wearing piece body more firm, reduces the expense of high-abrasive material; Broken tradition and eliminated the mode of welding stress, made the wearing layer of built-up welding segmentation crack occur, discharged the stress that produces in the weld deposit process, avoided blank cracked and cause scrapping by technological means by preheating.Can improve the service life and the remediation efficiency of wearing piece effectively, and technique scheme utilization implements simply, can reduce cost effectively, reduce and change wearing piece downtime.Vertical Mill roller skin is 1.3 times of former foundry goods service life, and the mill liner plate is 2 times of former foundry goods, greatly reduces the operating cost of cement factory, has promoted the development of cement industry.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are briefly explained:
Fig. 1 is the wearing piece sectional structure schematic diagram in the utility model;
Fig. 2 is a structural representation shown in Figure 1;
Be labeled as among the figure:
1, wearing piece body, 2, the build-up wear-resistant layer, 3, the built-up welding transition zone, 4, segmentation crack.
The specific embodiment
Contrast accompanying drawing below,, the specific embodiment of the present utility model is described in further detail, inventive concept of the present utility model, technical scheme are had more complete, accurate and deep understanding to help those skilled in the art by description to embodiment.
The of the present utility model structure expressed as Fig. 1, Fig. 2, the utility model is a kind of abrasion-proof structure and repair machining process thereof of wearing piece, comprise wearing piece body 1, build-up wear-resistant layer 2, the material of described wearing piece body 1 is a common straightcarbon steel, described build-up wear-resistant layer 2 material be the hypereutectic high-chromium alloy.
The core of the technical solution of the utility model is:
As shown in Figure 1, the abrasion-proof structure of this wearing piece provided by the utility model, described abrasion-proof structure is for being provided with built-up welding transition zone 3 between wearing piece body 1 and build-up wear-resistant layer 2, described built-up welding transition zone 3 adopts the built-up welding structure that is made of many welding beads, and its material is identical or close with the material of described wearing piece body 1.
The wearing piece bead-welding technology method that eliminates stress is: described build-up wear-resistant layer 2 is provided with equally distributed segmentation crack 4.
Technique scheme can improve the service life and the remediation efficiency of wearing piece effectively, and the technical solution of the utility model utilization implements simply, can reduce cost effectively, reduces and changes wearing piece downtime.Broken the mode of tradition by preheating elimination welding stress.The type of cooling is simple, cost is lower.
The wearing piece of taking the surperficial recovery scenario of this kind to recover, Vertical Mill roller skin are 1.3 times of former foundry goods service life, and the mill liner plate is 2 times of former foundry goods, greatly reduces the operating cost of cement factory, has promoted the development of cement industry.
The utility model provides the repair machining process of the abrasion-proof structure of above-mentioned wearing piece, and the technical scheme of described repair machining process is as follows:
Described abrasion-proof structure adopts bead-welding technology, and built-up welding successively goes out built-up welding transition zone 3 and build-up wear-resistant layer 2; In the process of the described build-up wear-resistant layer 2 of built-up welding, adopt open arc welding air-cooled, carry out air-cooled immediately to the welding bead that just has been welded into; Or set up sprayer unit, to the welding bead that just the has been welded into cooling of spraying immediately; Above-mentioned dual mode makes build-up wear-resistant layer 2 produce segmentation crack 4.
At first the surperficial remaining wearing layer of wearing piece to be repaired is removed; then at wearing piece body surface built-up welding one deck built-up welding transition zone 3; resurfacing welding material is identical or close with wearing piece body 1; reach the effect of protection wearing piece body 1; form slicks on wearing piece body 1 surface simultaneously; so that combine with build-up wear-resistant layer 2, the thickness of built-up welding transition zone 3 is decided on the blank blemish.After 3 built-up welding of built-up welding transition zone are finished, change welding wire and begin to carry out the built-up welding of build-up wear-resistant layer 2.
Described repair machining process is at first removed the surperficial remaining wearing layer of wearing piece body 1 to be repaired, then at the described built-up welding transition zone 3 of the surface overlaying of wearing piece body 1, and makes on built-up welding transition zone 3 formation polishing surfaces.
Built-up welding transition zone 3 all adopts the import automatic welder(welding machine) to carry out built-up welding with the built-up welding of build-up wear-resistant layer 2, and relevant parameter is identical with common wearing piece built-up welding.Different is that when built-up welding build-up wear-resistant layer 2, the employing open arc welding is air-cooled, or sets up sprayer unit, makes build-up wear-resistant layer 2 produce be full of cracks, has reached the effect that discharges welding stress.
By surface overlaying one deck build-up wear-resistant layer 2 to the wearing piece grinding roller, reach again the purpose of utilizing, and service life greater than the service time of foundry goods, be widely used at cement industry.In the process of hardfacing, in order to prevent to scrap owing to welding stress causes blank crackle to occur, industry generally adopts the mode of preheating to eliminate welding stress.But this scheme inconvenient operation, and cost height.
At the elimination problem of welding stress, the utility model allows the build-up wear-resistant layer 2 of built-up welding segmentation crack 4 occur by technological means, discharges the stress that produces in the weld deposit process, avoids blank cracked causing scrapping.As for the segmentation crack on the build-up wear-resistant layer 24,, be not affected for using owing to mainly bear compression rolling in the process of build-up wear-resistant layer 2.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.

Claims (3)

1. the abrasion-proof structure of a wearing piece, comprise wearing piece body (1), build-up wear-resistant layer (2), the material of described wearing piece body (1) is a common straightcarbon steel, (2 material is the hypereutectic high-chromium alloy, it is characterized in that: described abrasion-proof structure is for to be provided with built-up welding transition zone (3) between wearing piece body (1) and build-up wear-resistant layer (2) for described build-up wear-resistant layer.
2. according to the abrasion-proof structure of the described wearing piece of claim 1, it is characterized in that: described built-up welding transition zone (3) adopts the built-up welding structure that is made of many welding beads, and its material is identical or close with the material of described wearing piece body (1).
3. according to the abrasion-proof structure of claim 1 or 2 described wearing pieces, it is characterized in that: described build-up wear-resistant layer (2) is provided with equally distributed segmentation crack (4).
CN2010201256578U 2010-03-08 2010-03-08 Wear-resistant structure of wear-resistant part Expired - Fee Related CN201645924U (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804709A (en) * 2010-03-08 2010-08-18 安徽海螺川崎装备制造有限公司 Wearing resistant structure of wear resistant piece and repair machining process thereof
CN102974916A (en) * 2012-11-01 2013-03-20 金钧 High-pressure (HP) series grinding roller open arc surfacing anti-dropping welding method
CN104813130A (en) * 2012-11-27 2015-07-29 特殊电极株式会社 Method for manufacturing sinter cake support stand, and buildup welding method in sinter cake support stand
CN106238709A (en) * 2016-07-26 2016-12-21 镇江富华轧辊有限公司 The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101804709A (en) * 2010-03-08 2010-08-18 安徽海螺川崎装备制造有限公司 Wearing resistant structure of wear resistant piece and repair machining process thereof
CN102974916A (en) * 2012-11-01 2013-03-20 金钧 High-pressure (HP) series grinding roller open arc surfacing anti-dropping welding method
CN102974916B (en) * 2012-11-01 2016-01-20 金钧 HP series grinding roller open arc built-up welding slip-off preventing welding method
CN104813130A (en) * 2012-11-27 2015-07-29 特殊电极株式会社 Method for manufacturing sinter cake support stand, and buildup welding method in sinter cake support stand
CN106238709A (en) * 2016-07-26 2016-12-21 镇江富华轧辊有限公司 The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101124

Termination date: 20150308

EXPY Termination of patent right or utility model