CN101348911B - Wearing layer inlay coating sintering process - Google Patents
Wearing layer inlay coating sintering process Download PDFInfo
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- CN101348911B CN101348911B CN2008100130512A CN200810013051A CN101348911B CN 101348911 B CN101348911 B CN 101348911B CN 2008100130512 A CN2008100130512 A CN 2008100130512A CN 200810013051 A CN200810013051 A CN 200810013051A CN 101348911 B CN101348911 B CN 101348911B
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Abstract
The invention relates to the technical field of coating wear-resistant layers, in particular to a wear-resistant layer coating-melting process. The process is characterized by comprising the following steps that: a wear-resistant layer alloy block with the contact surface in the same shape with the contact surface of a matrix is manufactured; the wear-resistant layer alloy block and the matrix are coated by use of binder; the matrix coated with the wear-resistant layer alloy block is sent into a drying chamber to be dried; the dried matrix coated with the wear-resistant layer alloy block is sent into a melting furnace to be melted; a melted product is sprayed with cold water for cooling in the melting furnace and then sent to a testing room for test. The invention has the advantages that the process is firm in melting and does not damage the matrix; the melting is not limited by the shape and structure of the matrix; melting thickness is not limited; melting porosity is zero; the melted product cannot be oxidized; and the procedure of the melting process has no noise or pollution, thereby meeting the requirements on environmental protection, etc. The process is suitable to be popularized and applied in enterprises using wear-resistant vulnerable equipment in the metallurgy, mining, power, coal, chemical, building material and other industries.
Description
Technical field
The present invention relates to the wearing layer edge and be coated with technical field, particularly a kind of wearing layer inlay coating sintering process.
Background technology
At present, equipment such as the excavator that enterprises such as metallurgy, mine, coal use, slush pump, power shovel are used a large amount of wear-resisting consumable accessorys, these consumable accessory material expensive, and life cycle is short, needs frequent repair and replacement, has wasted lot of manpower and material resources and fund.In order to increase the wear resisting property of consumable accessory; some enterprise has taked methods such as spraying, plating, built-up welding respectively; increase protective layer on the consumable accessory surface; but result of use is not ideal, and the wear resisting property that has is poor; duration of service is shorter; what have is fixing insecure, comes off voluntarily in the use, has influenced these economic benefit of enterprises.
Summary of the invention
A kind of wearing layer inlay coating sintering process of the present invention, wearing layer that can wear resisting property is very high securely clinkering on the consumable accessory matrix, make wearing layer never drop-off during equipment work, thereby it is long to reach the wearing layer life cycle, not limited by working conditions, reduce spare parts consumption, improve the purpose of service life of equipment.
The objective of the invention is to realize by following technical proposals.
A kind of wearing layer inlay coating sintering process of the present invention is characterized in that this technology may further comprise the steps:
1) make the contact surface wearing layer alloy block identical with echoing matrix contact surface shape,
2) with binding agent wearing layer alloy block and matrix are inlayed and are coated with,
3) matrix that edge is coated with the wearing layer alloy block is sent the kiln oven dry to,
4) matrix that is coated with the wearing layer alloy block of the edge after will drying is sent the alloying furnace clinkering to,
5) product after the clinkering cools off with cold water sprays in alloying furnace,
6) send the testing laboratory check.
Described wearing layer alloy block moiety is as follows: nickel powder 15%-20%, chromium powder 25%-30%, manganese powder 10%-15%, iron powder 30%-35%, carbon dust 10%-15%, silica flour 5%-10% will put into mould internal heating to 1200 ℃-1300 ℃ behind the said components uniform mixing, the time is 5-10 minute.
Described binding agent is a multi-purpose adhesive.
Described kiln bake out temperature is 40 ℃-50 ℃, and the time is 2-3 hour.
Described alloying furnace fusion bonded temperature is 1300 ℃-1400 ℃, and the time is 1-5 minute, and vacuum tightness is≤1.33 handkerchiefs, and humidity is≤80%.
What described cold water sprays was used is recirculated water, and hydraulic pressure is 1.5 * 10
5Handkerchief-2 * 10
5Handkerchief.
A kind of wearing layer inlay coating sintering process of the present invention has following advantage:
1, clinkering is firm, and wearing layer and matrix can form very firm metallurgical binding;
2, do not damage matrix, the clinkering process is finished between high temperature, short time, can not make MATRIX CRACKING or distortion;
3, clinkering is not subjected to base shape and structural limitations, no matter is that plane, facade, inclined-plane, sphere, curved surface, outside surface, the internal surface of consumable accessory matrix all can be inlayed and be coated with clinkering;
4, clinkering thickness is unrestricted, and wearing layer clinkering thin thickness can be a few tenths of a mm, thickly also can surpass matrix thickness;
5, the clinkering void content is zero, and clinkering is almost being carried out under the vacuum state, so can not produce crafters;
6, not oxidation of sintered product, the sintered product light is clean and tidy, does not have oxide skin;
7, clinkering technological process noiseless, pollution-free, compliance with environmental protection requirements.
This wearing layer inlay coating sintering process is suitable for enterprise's wide popularization and application that industries such as metallurgy, mine, electric power, coal, chemical industry, building materials are used wear-resisting consumable accessory equipment.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Further specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of wearing layer inlay coating sintering process of the present invention is characterized in that this technology may further comprise the steps:
1) make the contact surface wearing layer alloy block 1 identical with echoing matrix contact surface shape,
2) with binding agent 2 wearing layer alloy block 1 and matrix 3 are inlayed and are coated with 4,
3) matrix 3 that edge is coated with wearing layer alloy block 1 is sent kiln 5 oven dry to,
4) matrix 3 that is coated with wearing layer alloy block 1 of the edge after will drying is sent alloying furnace 6 clinkerings to,
5) product after the clinkering cools off with cold water sprays in alloying furnace 6,
6) send testing laboratory 7 checks.
Described wearing layer alloy block 1 moiety is as follows: nickel powder 15%-20%, chromium powder 25%-30%, manganese powder 10%-15%, iron powder 30%-35%, carbon dust 10%-15%, silica flour 5%-10% will put into mould internal heating to 1200 ℃-1300 ℃ behind the said components uniform mixing, the time is 5-10 minute.
Described binding agent 2 is a multi-purpose adhesive, volatilization voluntarily in fusion process.
Described kiln 5 bake out temperatures are 40 ℃-50 ℃, and the time is 2-3 hour.
Described alloying furnace 6 fusion bonded temperatures are 1300 ℃-1400 ℃, and the time is 1-5 minute, and vacuum tightness is≤1.33 handkerchiefs, and humidity is≤80%.
What described cold water sprays was used is recirculated water, and hydraulic pressure is 1.5 * 10
5Handkerchief-2 * 10
5Handkerchief.
Embodiment 1: repair slag stock pump pump lining
The slag stock pump pump lining of mine application now adopts Cr27 alloy pump lining, and life cycle is short, need often change waste substantial contribution and manpower.Use edge of the present invention and be coated with clinkering technology, edge is coated with clinkering one deck wearing layer on the former rich chromium cast iron Cr27 alloy pump lining matrix of scrapping, and has significantly reduced the input cost of changing wearing piece.
Repair the wearing layer of slag stock pump pump lining, moiety is: nickel powder 15%, and chromium powder 30%, manganese powder 10%, iron powder 30%, carbon dust 10%, silica flour 5%, with internal heating to 1300 behind the said components uniform mixing ℃, the time is 5 minutes.Sending into the kiln bake out temperature is 40 ℃, and the time is 2 hours.The alloying furnace fusion bonded temperature is 1300 ℃, and the time is 1 minute, and vacuum tightness is 1.33 handkerchiefs, and humidity is 70%.Spraying cold water hydraulic pressure is 1.5 * 10
5Handkerchief.
Slag stock pump pump after reparation lining can anti-900 ℃ of high temperature, and corrosion-resistant, passive hardness is Rockwell HRC55-78, can stand 135 kg/cm and impact, and wear resisting property improves 1.5 times.
Embodiment 2: repair power shovel shovel tooth
The now High Manganese Cast Steel manganese 13 shovel teeth that adopt of China bargh, life cycle is short, needs frequently to change, and influences the performance of enterprises more.Use edge of the present invention and be coated with clinkering technology, edge one deck wearing layer that has been coated with clinkering significantly reduces unnecessary spare parts consumption on the former shovel tooth matrix of scrapping, and for enterprise reduces production costs, increases production and improves productivity and has created condition.
Repair the wearing layer of power shovel shovel tooth, moiety is: nickel powder 15%, and chromium powder 25%, manganese powder 10%, iron powder 30%, carbon dust 15%, silica flour 5%, with internal heating to 1200 behind the said components uniform mixing ℃, the time is 8 minutes.Sending into the kiln bake out temperature is 40 ℃, and the time is 2.5 hours.The alloying furnace fusion bonded temperature is 1400 ℃, and the time is 1 minute, and vacuum tightness is 1.33 handkerchiefs, and humidity is 80%.Spraying cold water hydraulic pressure is 1.5 * 10
5Handkerchief.
Power shovel after reparation shovel tooth can anti-900 ℃ of high temperature, and corrosion-resistant, passive hardness is Rockwell HRC55-78, can stand 135 kg/cm and impact, and construction costs reduces 50%-70% than former power shovel shovel tooth.
Claims (3)
1. wearing layer inlay coating sintering process, this technology may further comprise the steps:
1) make the contact surface wearing layer alloy block identical with echoing matrix contact surface shape,
2) with binding agent wearing layer alloy block and matrix are inlayed and are coated with,
3) matrix that edge is coated with the wearing layer alloy block is sent the kiln oven dry to,
4) matrix that is coated with the wearing layer alloy block of the edge after will drying is sent the alloying furnace clinkering to,
5) product after the clinkering cools off with cold water sprays in alloying furnace,
6) send the testing laboratory check,
It is characterized in that described wearing layer alloy block moiety is as follows: nickel powder 15%-20%, chromium powder 25%-30%, manganese powder 10%-15%, iron powder 30%-35%, carbon dust 10%-15%, silica flour 5%-10% will put into mould internal heating to 1200 ℃-1300 ℃ behind the said components uniform mixing, the time is 5-10 minute.
2. a kind of wearing layer inlay coating sintering process according to claim 1 is characterized in that described kiln bake out temperature is 40 ℃-50 ℃, and the time is 2-3 hour.
3. a kind of wearing layer inlay coating sintering process according to claim 1 is characterized in that described alloying furnace fusion bonded temperature is 1300 ℃-1400 ℃, and the time is 1-5 minute, and vacuum tightness is≤1.33 handkerchiefs, and humidity is≤80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100130512A CN101348911B (en) | 2008-09-02 | 2008-09-02 | Wearing layer inlay coating sintering process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100130512A CN101348911B (en) | 2008-09-02 | 2008-09-02 | Wearing layer inlay coating sintering process |
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| Publication Number | Publication Date |
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| CN101348911A CN101348911A (en) | 2009-01-21 |
| CN101348911B true CN101348911B (en) | 2010-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100130512A Expired - Fee Related CN101348911B (en) | 2008-09-02 | 2008-09-02 | Wearing layer inlay coating sintering process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107303127B (en) * | 2016-04-25 | 2019-08-09 | 佛山市顺德区美的电热电器制造有限公司 | A kind of cooking pot tool and its manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716347A (en) * | 1970-09-21 | 1973-02-13 | Minnesota Mining & Mfg | Metal parts joined with sintered powdered metal |
| US4228944A (en) * | 1977-10-31 | 1980-10-21 | Mitsubishi Denki Kabushiki Kaisha | Method of bonding substrates made of metal or alloy |
| CN1052271A (en) * | 1990-12-14 | 1991-06-19 | 北京四通集团公司新型材料技术公司 | Two step vacuum smelting method for composite metal anti-abrasive hammer sheet and cutting knife |
| CN1280894A (en) * | 1999-07-02 | 2001-01-24 | 创世纪科技股份有限公司 | Thermowelding method for join surface between metals |
| CN1800425A (en) * | 2004-12-17 | 2006-07-12 | 通用电气公司 | Preform and method of repairing nickel-base superalloys and components repaired thereby |
| CN1279206C (en) * | 2000-10-20 | 2006-10-11 | 通用电气公司 | Protection of surfaces of nickle based alloy products by corrosionproof aluminium alloy coating |
-
2008
- 2008-09-02 CN CN2008100130512A patent/CN101348911B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716347A (en) * | 1970-09-21 | 1973-02-13 | Minnesota Mining & Mfg | Metal parts joined with sintered powdered metal |
| US4228944A (en) * | 1977-10-31 | 1980-10-21 | Mitsubishi Denki Kabushiki Kaisha | Method of bonding substrates made of metal or alloy |
| CN1052271A (en) * | 1990-12-14 | 1991-06-19 | 北京四通集团公司新型材料技术公司 | Two step vacuum smelting method for composite metal anti-abrasive hammer sheet and cutting knife |
| CN1280894A (en) * | 1999-07-02 | 2001-01-24 | 创世纪科技股份有限公司 | Thermowelding method for join surface between metals |
| CN1279206C (en) * | 2000-10-20 | 2006-10-11 | 通用电气公司 | Protection of surfaces of nickle based alloy products by corrosionproof aluminium alloy coating |
| CN1800425A (en) * | 2004-12-17 | 2006-07-12 | 通用电气公司 | Preform and method of repairing nickel-base superalloys and components repaired thereby |
Non-Patent Citations (3)
| Title |
|---|
| JP昭57-22867A 1982.02.05 |
| 吴仲行.真空熔结技术.中国表面工程 第2期.1991,(第2期),34-47. |
| 吴仲行.真空熔结技术.中国表面工程 第2期.1991,(第2期),34-47. * |
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| CN101348911A (en) | 2009-01-21 |
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