CN101921126A - Production method of long-life abrasion-resistant blade - Google Patents
Production method of long-life abrasion-resistant blade Download PDFInfo
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- CN101921126A CN101921126A CN2010102665849A CN201010266584A CN101921126A CN 101921126 A CN101921126 A CN 101921126A CN 2010102665849 A CN2010102665849 A CN 2010102665849A CN 201010266584 A CN201010266584 A CN 201010266584A CN 101921126 A CN101921126 A CN 101921126A
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Abstract
The invention relates to a production method of a long-life abrasion-resistant blade, solving the problems of poor corrosion resistance, high-temperature resistance and abrasion resistance and high energy consumption. The production method of the long-life abrasion-resistant blade comprises the following steps of: mixing raw materials of the following components in parts by weight: 68-88 parts of coke powder, 22-32 parts of simple substance silicon, 20-32 parts of purified water, 1-2 parts of polyvinyl alcohol with a pH value between 6.8 and 7.2; then blending, pulping, moulding, forming, drying, fettling, sintering, and finishing to produce the long-life abrasion-resistant blade. The long-life abrasion-resistant blade produced by the method has the advantages of high rigidity, corrosion resistance, high-temperature resistance and abrasion resistance and can be suitable for conveying various materials.
Description
Technical field
The present invention relates to a kind of production method of long-life abrasion-resistant blade, a kind of specifically production method that is used for the long-life abrasion-resistant blade on the worm conveyer.
Background technology
Worm conveyor can be finished operations such as mixing and cooling with the function of mixing, carrying in convey materials, be applicable to the mixing of bulk materials such as various powderies, particulate state and fritter shape is carried.The blade that is used at present finish on the worm conveyor that mixes conveying function has two kinds, a kind of is fixing style, another kind is detachable, no matter which kind of blade all adopts metallic substance to make usually, there is following problem in the blade of this material: (1) metal material wear-corrosion resistance is poor, only be 50 hours the work-ing life as high mangaenese steel and rich chromium cast iron material blade, work-ing life, short making must frequently be changed blade, must shut down artificial replacing when changing more blade, cause increasing labour intensity, reduced production efficiency, the problem of production poor continuity; (2) but because blade hardness height, high temperature resistant relatively poor with corrosion resistance nature, and for fear of some industrial raw material and metal react cause rotten or fouling may, for perishable, viscosity big, easily caking, high temperature, have big corrosive special material to be suitable for.(3) owing to the wearing and tearing of conveying medium, the very fast meeting of blade is worn and torn by medium, can be become impurity by the abrasive blade material and sneak in the material, and material is brought variety of issue.(4) the big Heavy Weight of metal blade density makes in the course of conveying that energy consumption is big, has increased the conveying cost.
Summary of the invention
The objective of the invention is in order to solve the problems of the technologies described above, provide a kind of hardness height, corrosion-resistant, high temperature resistant, wear-resistant, applicable to the production method of the long-life abrasion-resistant blade of all kinds of mass transport.
Technical scheme for the raw material of following composition by weight deal mix: coke powder 68～88, elemental silicon 22～32, pure water 20～32, the pH value polyvinyl alcohol 1～2 between 6.8～7.2 makes through batching, slurrying, molding, moulding, drying, repaired biscuit, sintering, finishing then.
Described raw material is a coke powder 68, elemental silicon 32, and pure water 25, pH value is at 7.0 polyvinyl alcohol 1.5.
Described production method is:
Batching: the raw material that takes by weighing corresponding parts by weight on request;
Slurrying: earlier coke powder is joined in the pure water, stir after 10-12 hour, add elemental silicon again and stirred 8-10 hour, add polyvinyl alcohol then, stirred 6-8 hour, slip is mixed into paste;
Molding: make pattern according to target workpiece;
Moulding: adopt the solid casting method to carry out slip casting;
Dry: after the molding blank demoulding, 45-60 ℃ drying shed carries out oven dry in 100-124 hour;
Repaired biscuit: after the molding blank drying, the defective of billet surface is repaired;
Sintering: the base substrate that trims is put into vacuum oven, be warmed up to 1800-2000 ℃ and carry out vacuum reaction sintering, vacuum tightness is not more than 0.1Pa during sintering, and the sintering time behind 1410 ℃ of fusing point that reaches elemental silicon is 4-10 hour;
Finishing: will remove the elemental silicon and the impurity that remain in billet surface and obtain long-life abrasion-resistant blade of the present invention through the reacted base substrate of vacuum sintering by shot-peening or polishing.
Wear-resistant ceramic material is good owing to having wear resistance, the advantage that production cost is low is widely used in the every profession and trade, and the raw material of the abrasion-resistant blade for preparing among the present invention is very simple, only used coke powder, elemental silicon, pure water and polyvinyl alcohol, different with alumina series or other wear-resistant ceramic raw material, its principle is to utilize carbon and silicon generation chemical reaction to generate silicon carbide, the abrasion-resistant blade that makes has the hardness height, corrosion-resistant, high temperature resistant, anti abrasive characteristics, moreover, compare with the wear-resistant ceramic series of alumina series, the technological operation of abrasion-resistant blade of the present invention is more simple, good moldability, be highly suitable for complex-shaped, the production of the abrasion-resistant blade that accuracy requirement is high is suitable for too for other production requirement and the identical similar wear-resistant ceramic product of work condition environment.Described coke powder particle diameter is preferably 800 orders.
Beneficial effect:
(1) long-life abrasion-resistant blade of the inventive method production can well substitute the metal blade on the existing worm conveyor, can with regard to using working life, be more than 10 times of antifriction metal (AFM) material blade such as high mangaenese steel and rich chromium cast iron by the corresponding site of inlaying, bonding, mode such as fastening are assembled in equipment easily;
(2) owing to prolonged long working life greatly, shut down the time of changing blade and the hand labor intensity of bringing thus, guaranteed the continuity that conveyor apparatus uses, significantly improved production efficiency thereby reduced significantly;
(3) the long-lived abrasion-resistant blade of the present invention has high rigidity, wear-resistant, corrosion-resistant, resistant to elevated temperatures remarkable characteristic, the mixing that not only can be used for bulk materials such as various powderies, particulate state and fritter shape is carried, also be applicable to perishable, viscosity big, easily caking, high temperature, the conveying of big corrosive special material is arranged, increased the range of application of mass transport, greatly reduce the content of impurity in the material that produces by the blade abrasion, and material non-scaling in the use, be easy to cleaning, obviously improved working condition;
(4) compare with metal blade, volume density is little, quality greatly alleviates, and can reduce conveying energy consumption and reach more than 50%;
(5) compare with similar wear-resistant ceramic material, component is more simple, raw material is easy to get, good moldability, is specially adapted to the manufacturing of blade, also is applicable to the products production manufacturing that other is complex-shaped, accuracy requirement is high simultaneously.
Embodiment
Embodiment 1
Raw material (ratio of weight and number): coke powder 68, elemental silicon 32, pure water 22, the pH value polyvinyl alcohol 1 between 6.8～7.2.
Production method:
Batching: the raw material that takes by weighing corresponding parts by weight on request;
Slurrying: earlier coke powder is joined in the pure water, stir after 10-12 hour, add elemental silicon again and stirred 8-10 hour, add polyvinyl alcohol then, stirred 6-8 hour, slip is mixed into paste;
Molding: make pattern according to target workpiece;
Moulding: adopt the solid casting method to carry out slip casting;
Dry: after the molding blank demoulding, 45-60 ℃ drying shed carries out oven dry in 100-124 hour;
Repaired biscuit: after the molding blank drying, the defective of billet surface is repaired;
Sintering: the base substrate that trims is put into vacuum oven, be warmed up to 1800-2000 ℃ and carry out vacuum reaction sintering, vacuum tightness is not more than 0.1Pa during sintering, and the sintering time behind 1410 ℃ of fusing point that reaches elemental silicon is 4-10 hour;
Finishing: will remove the elemental silicon and the impurity that remain in billet surface and obtain long-life abrasion-resistant blade of the present invention through the reacted base substrate of vacuum sintering by shot-peening or polishing.
Embodiment 2
Raw material (ratio of weight and number): coke powder 74, elemental silicon 28, pure water 24, the pH value polyvinyl alcohol 1 between 6.8～7.2.
Production method: with embodiment 1.
Embodiment 3
Raw material (ratio of weight and number): coke powder 82, elemental silicon 22, pure water 32, the pH value polyvinyl alcohol 2 between 6.8～7.2.
Production method: with embodiment 1.
Embodiment 4
Raw material (ratio of weight and number): coke powder 88, elemental silicon 26, pure water 20, the pH value polyvinyl alcohol 2 between 6.8～7.2.
Production method: with embodiment 1.
Table 1
Volume density is by 7.8g/cm
3Drop to 3.02g/cm
3Like this, same blade, weight will alleviate over half, and the power capacity that needs will correspondingly reduce; Mohs' hardness brings up to 13 by 10, wear resisting property will strengthen, and the quality of resistance to acids and bases is exactly the performance of corrosion resistance, and what the height of folding strength showed product is the strength property that product can move, the too high power that will expanded motor of intensity can burn electric motor.Same material is being carried in the comparison of comprehensive each side, and temperature can improve 10 times of effects under 130 ℃ working condition, and energy consumption reduces 3/4.
Claims (3)
1. the production method of a long-life abrasion-resistant blade, it is characterized in that, the raw material of following composition is mixed by described parts by weight: coke powder 68～88, elemental silicon 22～32, pure water 20～32, the polyvinyl alcohol 1～2 of pH value between 6.8～7.2 makes through batching, slurrying, molding, moulding, drying, repaired biscuit, sintering, finishing then.
2. the production method of long-life abrasion-resistant blade as claimed in claim 1 is characterized in that, described raw material is a coke powder 68, elemental silicon 32, and pure water 25, pH value is at 7.0 polyvinyl alcohol 1.5.
3. the production method of long-life abrasion-resistant blade as claimed in claim 1 or 2 is characterized in that,
Batching: the raw material that takes by weighing corresponding parts by weight on request;
Slurrying: earlier coke powder is joined in the pure water, stir after 10-12 hour, add elemental silicon again and stirred 8-10 hour, add polyvinyl alcohol then, stirred 6-8 hour, slip is mixed into paste;
Molding: make pattern according to target workpiece;
Moulding: adopt the solid casting method to carry out slip casting;
Dry: after the molding blank demoulding, 45-60 ℃ drying shed carries out oven dry in 100-124 hour;
Repaired biscuit: after the molding blank drying, the defective of billet surface is repaired;
Sintering: the base substrate that trims is put into vacuum oven, be warmed up to 1800-2000 ℃ and carry out vacuum reaction sintering, vacuum tightness is not more than 0.1Pa during sintering, and the sintering time behind 1410 ℃ of fusing point that reaches elemental silicon is 4-10 hour
Finishing: will remove the elemental silicon and the impurity that remain in billet surface and obtain long-life abrasion-resistant blade of the present invention through the reacted base substrate of vacuum sintering by shot-peening or polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102665849A CN101921126A (en) | 2010-08-30 | 2010-08-30 | Production method of long-life abrasion-resistant blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102665849A CN101921126A (en) | 2010-08-30 | 2010-08-30 | Production method of long-life abrasion-resistant blade |
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| CN101921126A true CN101921126A (en) | 2010-12-22 |
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| CN2010102665849A Pending CN101921126A (en) | 2010-08-30 | 2010-08-30 | Production method of long-life abrasion-resistant blade |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040573A (en) * | 1988-08-31 | 1990-03-21 | 江西省工业设备安装公司 | High temperature clay and compound method thereof |
| CN1056297A (en) * | 1990-05-04 | 1991-11-20 | 湖南省娄底地区新材料研究所 | Refractory material and preparation thereof |
| CN101195538A (en) * | 2007-12-13 | 2008-06-11 | 武汉钢铁(集团)公司 | Silicon carbide ceramic abrasion-proof structure and manufacturing method thereof |
-
2010
- 2010-08-30 CN CN2010102665849A patent/CN101921126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040573A (en) * | 1988-08-31 | 1990-03-21 | 江西省工业设备安装公司 | High temperature clay and compound method thereof |
| CN1056297A (en) * | 1990-05-04 | 1991-11-20 | 湖南省娄底地区新材料研究所 | Refractory material and preparation thereof |
| CN101195538A (en) * | 2007-12-13 | 2008-06-11 | 武汉钢铁(集团)公司 | Silicon carbide ceramic abrasion-proof structure and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭海珠 等: "《实用耐火原料手册》", 31 August 2000, 中国建材工业出版社 * |
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Application publication date: 20101222 |