CN102937374A - Preparation method of composite sintering machine grate bar - Google Patents
Preparation method of composite sintering machine grate bar Download PDFInfo
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- CN102937374A CN102937374A CN2012104114411A CN201210411441A CN102937374A CN 102937374 A CN102937374 A CN 102937374A CN 2012104114411 A CN2012104114411 A CN 2012104114411A CN 201210411441 A CN201210411441 A CN 201210411441A CN 102937374 A CN102937374 A CN 102937374A
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- grate bar
- fire grate
- potsherd
- ceramic chip
- groove
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Abstract
The patent of the invention relates to a method for preparing a sintering machine grate bar with mechanical composition of ceramics and high-chromium cast iron through embedding an abrasion-resistant ceramic chip in a working surface of a sintering machine grate bar. The method comprises the following steps of: leveling the working surface of the grate bar on a planning machine; then opening an inverted-V-shaped groove along the middle line of the leveled surface of the grate bar; and then embedding the ceramic chip with an inverted-V-shaped boss in the middle into the groove of the grate bar, thereby preparing the sintering machine grate bar with the mechanical composition of the ceramics and the grate bar. The ceramic chip is made from aluminum oxide or zirconium oxide; and the grate bar is made from the high-chromium cast iron or ferritic nodular cast iron. According to detection, the ceramic chip and the grate bar are combined firmly, and during the using process of the grate bar, the ceramic chip is prevented from falling off, cracking or being smashed by sinter. Because the ceramic chip made from the aluminum oxide or the zirconium oxide has excellent performances of high-temperature resistance, corrosion resistance and oxidation resistance as well as certain toughness, the service life of the sintering machine grate bar of an iron smelting plant is prolonged by 2-3 times after the abrasion-resistant ceramic chip is embedded in the grate bar.
Description
Technical field
The present invention relates to the preparation technology that a kind of working surface at the sintering machine fire grate bar is inlayed the pottery antiwear ceramic sheet, belong to the metal-base composites field.
Background technology
Fire grate bar is one of critical component of iron-smelter sintering machine, and operating temperature is often up to more than 900 ℃.After sintering machine was laid down in the sintering task of finishing the iron fine powder and with sintering deposit, fire grate bar was subject to again rapid cooling effect on loop, also will bear simultaneously bump, corrosion and the high temperature wear of sintering deposit.Heated, after the iterative cycles effect of the process such as cooling, bump, abrasion and corrosion, gradually oxidation of surface, ftractureing, subside and and flexural deformation and damaging.Fire grate bar belongs to consumable accessory, directly has influence on the production efficiency of sintering mineral aggregate and the production cost of sintering deposit its service life, so fire grate bar should have good high temperature oxidation resistance, elevated temperature strength, resistance to corrosion and high temperature abrasion resistance.At present, the fire grate bar consumption that China's iron-smelter sintering machine uses is large, and be 3-6 month average life, has had a strong impact on production efficiency and the production cost of sintering mineral aggregate.Therefore, become the current a great problem that needs to be resolved hurrily the service life of raising sintering machine fire grate bar.
Summary of the invention
The object of the present invention is to provide a kind of working surface at the sintering machine fire grate bar to inlay the process of pottery antiwear ceramic sheet.By zirconia that to inlay a thickness at the working surface of existing rich chromium cast iron or ferrite ductile cast iron sintering machine fire grate bar be 3mm or aluminum oxide potsherd to improve wear-resisting, the anti-corrosion and oxidation resistant performance of fire grate bar, thereby, significantly improve the service life of sintering machine fire grate bar, reduce the production cost of sintering deposit.
The invention discloses a kind of complex sintered machine fire grate bar, comprise the fire grate bar body, reverse V-shaped groove is arranged on the fire grate bar body, one has the potsherd of reverse V-shaped boss to be embedded on the fire grate bar body, and described boss is the structure that matches with groove.
The invention also discloses the preparation method of above-mentioned complex sintered machine fire grate bar, is at first the working surface of fire grate bar to be carried out smoothly on planer, then leaves a reverse V-shaped groove on the surface after smooth again; Afterwards, the potsherd of a centre with reverse V-shaped boss is embedded in the groove of fire grate bar, thereby, prepare the pottery sintering machine fire grate bar compound with fire grate bar machinery.
Described potsherd material is aluminium oxide or zirconia.Potsherd thickness can be adjusted according to actual needs.
The fire grate bar material can be Cr15, Cr20 or Cr28 rich chromium cast iron, also can be ferrite ductile cast iron.
Concrete steps of the present invention are as follows:
(1) at first, 3mm carries out smoothly under on the planer working surface of fire grate bar being dug, and then, leaves the reverse V-shaped groove of a degree of depth 10mm along the center line that is flattened the surface again; The lower port size 10mm of groove, upper port size 5mm;
(2) processing aluminum oxide or zirconium oxide potsherd with reverse V-shaped boss, the groove size of leaving on the boss size of potsherd and the fire grate bar is corresponding, boss height 9.5mm * lower port size 9.5mm * upper port size 4.5mm, potsherd thickness 3mm, the working surface of its length and width and the actual fire grate bar that uses is measure-alike or smaller;
(3) potsherd is embedded in by the boss on it and realizes between the two mechanical compound in groove of fire grate bar.
After testing, potsherd is combined firmly with rich chromium cast iron or ferrite ductile cast iron, potsherd in use do not occur and comes off, ftractures or be sintered the phenomenon that smash in the ore deposit.Because aluminium oxide or zirconia ceramics sheet have excellent heat-resisting quantity, corrosion resistance, non-oxidizability and certain toughness, so, 2-3 after having inlayed wear resistant ceramic chip, improved the service life of iron-smelter sintering machine fire grate bar doubly.If further increase again the service life that the thickness of potsherd can also further improve fire grate bar.
Description of drawings
Fig. 1 is flow chart of the present invention.
The specific embodiment
Embodiment 1
Flow process of the present invention as shown in Figure 1,3mm carries out smoothly under at first the working surface of fire grate bar being dug on the planer, then, leaves the reverse V-shaped groove of a degree of depth 10mm along the center line that is flattened the surface again.The lower port size 10mm of groove, then upper port size 5mm, is embedded in the aluminum oxide of reverse V-shaped boss or zirconium oxide potsherd one and carries out between the two mechanical compound in the groove of leaving.The boss height 9.5mm of potsherd * lower end size 9.5mm * upper end size 4.5mm, potsherd thickness 3mm, the working surface of length and width and the actual fire grate bar that uses is measure-alike, and the thickness of potsherd also can further strengthen as required.
Claims (4)
1. complex sintered machine fire grate bar preparation method is characterized in that: at first the working surface of fire grate bar is carried out smoothly on planer, then, leave a reverse V-shaped groove along the center line that is flattened the surface again; Afterwards, the potsherd of a centre with reverse V-shaped boss is embedded in the groove of the fire grate bar of leaving, thereby, prepare the pottery sintering machine fire grate bar compound with fire grate bar machinery.
2. method according to claim 1 is characterized in that, the potsherd material is aluminium oxide or zirconia.
3. method according to claim 1 is characterized in that, the fire grate bar material is Cr15, Cr20 or Cr28 rich chromium cast iron, or ferrite ductile cast iron.
4. method according to claim 1 is characterized in that, concrete steps are as follows:
(1) at first under on the planer working surface of fire grate bar being dug 3mm carry out smoothly, then, leave again the reverse V-shaped groove of a degree of depth 10mm along the center line that is flattened the surface; The lower port size 10mm of groove, upper port size 5mm;
(2) corresponding with the groove size of leaving on the boss size of the potsherd of reverse V-shaped boss and the fire grate bar, boss height 9.5mm * lower port size 9.5mm * upper end chi mouth cun 4.5mm, potsherd thickness 3mm, the working surface of the length of potsherd and width dimensions and the actual fire grate bar that uses is measure-alike or smaller;
(3) potsherd is embedded in by the boss on it and realizes between the two mechanical compound in groove of fire grate bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104114411A CN102937374A (en) | 2012-10-25 | 2012-10-25 | Preparation method of composite sintering machine grate bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104114411A CN102937374A (en) | 2012-10-25 | 2012-10-25 | Preparation method of composite sintering machine grate bar |
Publications (1)
| Publication Number | Publication Date |
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| CN102937374A true CN102937374A (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012104114411A Pending CN102937374A (en) | 2012-10-25 | 2012-10-25 | Preparation method of composite sintering machine grate bar |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3326694A1 (en) * | 1983-07-23 | 1985-01-31 | Deutsche Richard Kablitz Gesellschaft für Ökonomie der Dampferzeugungskosten und Feuerungskontrolle Richard Kablitz GmbH & Co KG, 6970 Lauda | SLOPED GRID FOR FIREPLACES |
| CN2328633Y (en) * | 1998-03-13 | 1999-07-14 | 梁戈 | Ceramic flashboard for material conveyer valve |
| CN101024556A (en) * | 2006-10-12 | 2007-08-29 | 洛阳鹏飞耐火材料有限公司 | Metal ceramic wear-resisting composite material and preparing method |
| JP2009530578A (en) * | 2006-03-17 | 2009-08-27 | ドイコス、インベスティメンツ、リミテッド | Liquid-cooled grate / firebed with this plate |
| US20100143742A1 (en) * | 2007-04-20 | 2010-06-10 | Igor Tsypine | Wear-resistant castings and method of fabrication thereof |
| CN201715862U (en) * | 2010-06-22 | 2011-01-19 | 宝山钢铁股份有限公司 | Composite reinforced sintering machine trolley grate bar |
| CN201909536U (en) * | 2011-01-26 | 2011-07-27 | 黄述生 | Grate bar for sintering machines |
| CN201964768U (en) * | 2011-03-07 | 2011-09-07 | 于洋 | Grate plate for sintering machine |
| CN202100925U (en) * | 2011-05-12 | 2012-01-04 | 中山市华山特种陶瓷有限公司 | Ceramic-steel composite lining board |
| CN202129106U (en) * | 2011-05-18 | 2012-02-01 | 兴化市华成机械制造有限公司 | Double-layer compound protective cover of grate plate with signal roller |
| CN202246778U (en) * | 2011-09-26 | 2012-05-30 | 山东万邦科贸有限公司 | Combined-type furnace grate |
-
2012
- 2012-10-25 CN CN2012104114411A patent/CN102937374A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3326694A1 (en) * | 1983-07-23 | 1985-01-31 | Deutsche Richard Kablitz Gesellschaft für Ökonomie der Dampferzeugungskosten und Feuerungskontrolle Richard Kablitz GmbH & Co KG, 6970 Lauda | SLOPED GRID FOR FIREPLACES |
| CN2328633Y (en) * | 1998-03-13 | 1999-07-14 | 梁戈 | Ceramic flashboard for material conveyer valve |
| JP2009530578A (en) * | 2006-03-17 | 2009-08-27 | ドイコス、インベスティメンツ、リミテッド | Liquid-cooled grate / firebed with this plate |
| CN101024556A (en) * | 2006-10-12 | 2007-08-29 | 洛阳鹏飞耐火材料有限公司 | Metal ceramic wear-resisting composite material and preparing method |
| US20100143742A1 (en) * | 2007-04-20 | 2010-06-10 | Igor Tsypine | Wear-resistant castings and method of fabrication thereof |
| CN201715862U (en) * | 2010-06-22 | 2011-01-19 | 宝山钢铁股份有限公司 | Composite reinforced sintering machine trolley grate bar |
| CN201909536U (en) * | 2011-01-26 | 2011-07-27 | 黄述生 | Grate bar for sintering machines |
| CN201964768U (en) * | 2011-03-07 | 2011-09-07 | 于洋 | Grate plate for sintering machine |
| CN202100925U (en) * | 2011-05-12 | 2012-01-04 | 中山市华山特种陶瓷有限公司 | Ceramic-steel composite lining board |
| CN202129106U (en) * | 2011-05-18 | 2012-02-01 | 兴化市华成机械制造有限公司 | Double-layer compound protective cover of grate plate with signal roller |
| CN202246778U (en) * | 2011-09-26 | 2012-05-30 | 山东万邦科贸有限公司 | Combined-type furnace grate |
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Application publication date: 20130220 |